WorldWideScience

Sample records for automatic vehicle monitoring

  1. Automatic vehicle counting system for traffic monitoring

    Science.gov (United States)

    Crouzil, Alain; Khoudour, Louahdi; Valiere, Paul; Truong Cong, Dung Nghy

    2016-09-01

    The article is dedicated to the presentation of a vision-based system for road vehicle counting and classification. The system is able to achieve counting with a very good accuracy even in difficult scenarios linked to occlusions and/or presence of shadows. The principle of the system is to use already installed cameras in road networks without any additional calibration procedure. We propose a robust segmentation algorithm that detects foreground pixels corresponding to moving vehicles. First, the approach models each pixel of the background with an adaptive Gaussian distribution. This model is coupled with a motion detection procedure, which allows correctly location of moving vehicles in space and time. The nature of trials carried out, including peak periods and various vehicle types, leads to an increase of occlusions between cars and between cars and trucks. A specific method for severe occlusion detection, based on the notion of solidity, has been carried out and tested. Furthermore, the method developed in this work is capable of managing shadows with high resolution. The related algorithm has been tested and compared to a classical method. Experimental results based on four large datasets show that our method can count and classify vehicles in real time with a high level of performance (>98%) under different environmental situations, thus performing better than the conventional inductive loop detectors.

  2. A Communication Protocol and Monitoring Policy for Input/Output Vehicles in an Automatic Storage and Retrieval System

    Institute of Scientific and Technical Information of China (English)

    LI Li; LI Wenfeng; LIAO Xiaoping; SU Wengui; LIN Yizhong

    2006-01-01

    The acquisition and processing of equipment information is pivotal to control and management of the automated storage and retrieval system. The work of this paper is based on the automatic storage and retrieval experimental system of Wuhan University of Technology. First, the output/input flow and the control information of storage/retrieval vehicle are studied and the plotting finite state machine model of the stacking crane is established. Then, the communication protocol between the center control management computer and the PLC of stacking crane is designed. Finally, the stacking crane's monitoring data, which include operating time, running states and real-time position status, are gained by analyzing the communication protocol. The detailed program for the acquisition and processing of monitoring information is developed. This method is suitable for the equipment monitoring of the whole system, and provides a platform for studying the intelligent control and optimal scheduling strategies of AS/RS.

  3. Video Analytics Algorithm for Automatic Vehicle Classification (Intelligent Transport System

    Directory of Open Access Journals (Sweden)

    ArtaIftikhar

    2013-04-01

    Full Text Available Automated Vehicle detection and classification is an important component of intelligent transport system. Due to significant importance in various fields such as traffic accidents avoidance, toll collection, congestion avoidance, terrorist activities monitoring, security and surveillance systems, intelligent transport system has become important field of study. Various technologies have been used for detecting and classifying vehicles automatically. Automated vehicle detection is broadly divided into two types- Hardware based and software based detection. Various algorithms have been implemented to classify different vehicles from videos. In this paper an efficient and economical solution for automatic vehicle detection and classification is proposed. The proposed system first isolates the object through background subtraction followed by vehicle detection using ontology. Vehicle detection is based on low level features such as shape, size, and spatial location. Finally system classifies vehicles into one of the known classes of vehicle based on size.

  4. Automatic mapping of monitoring data

    DEFF Research Database (Denmark)

    Lophaven, Søren; Nielsen, Hans Bruun; Søndergaard, Jacob

    2005-01-01

    This paper presents an approach, based on universal kriging, for automatic mapping of monitoring data. The performance of the mapping approach is tested on two data-sets containing daily mean gamma dose rates in Germany reported by means of the national automatic monitoring network (IMIS......). In the second dataset an accidental release of radioactivity in the environment was simulated in the South-Western corner of the monitored area. The approach has a tendency to smooth the actual data values, and therefore it underestimates extreme values, as seen in the second dataset. However, it is capable...

  5. Automatic Control of Personal Rapid Transit Vehicles

    Science.gov (United States)

    Smith, P. D.

    1972-01-01

    The requirements for automatic longitudinal control of a string of closely packed personal vehicles are outlined. Optimal control theory is used to design feedback controllers for strings of vehicles. An important modification of the usual optimal control scheme is the inclusion of jerk in the cost functional. While the inclusion of the jerk term was considered, the effect of its inclusion was not sufficiently studied. Adding the jerk term will increase passenger comfort.

  6. Multibody simulation of vehicles equipped with an automatic transmission

    Science.gov (United States)

    Olivier, B.; Kouroussis, G.

    2016-09-01

    Nowadays automotive vehicles remain as one of the most used modes of transportation. Furthermore automatic transmissions are increasingly used to provide a better driving comfort and a potential optimization of the engine performances (by placing the gear shifts at specific engine and vehicle speeds). This paper presents an effective modeling of the vehicle using the multibody methodology (numerically computed under EasyDyn, an open source and in-house library dedicated to multibody simulations). However, the transmission part of the vehicle is described by the usual equations of motion computed using a systematic matrix approach: del Castillo's methodology for planetary gear trains. By coupling the analytic equations of the transmission and the equations computed by the multibody methodology, the performances of any vehicle can be obtained if the characteristics of each element in the vehicle are known. The multibody methodology offers the possibilities to develop the vehicle modeling from 1D-motion to 3D-motion by taking into account the rotations and implementing tire models. The modeling presented in this paper remains very efficient and provides an easy and quick vehicle simulation tool which could be used in order to calibrate the automatic transmission.

  7. Desktop calibration of automatic transmission for passenger vehicle

    Institute of Scientific and Technical Information of China (English)

    FANG Chi; SHI Jian-peng; WANG Jun

    2014-01-01

    Desktop calibration of automatic transmission (AT) is a method which can reduce cost, enhance efficiency and shorten the development periods of a vehicle effectively. We primary introduced the principle and approach of desktop calibration of AT based on the condition of coupling characteristics between engine and torque converter and obtained right point exactly. It is shown to agree with experimental measurements reasonably well. It was used in different applications abroad based on AT technology and achieved a good performance of the vehicle compared with traditional AT technology which primary focuses on the drivability, performance and fuel consumption.

  8. An estimation-based automatic vehicle location system for public transport vehicles

    OpenAIRE

    Morenz, Tino; MEIER, RENE

    2008-01-01

    PUBLISHED Public transport vehicles often share a road network with other road users making their journeys susceptive to changing road conditions and especially to congestion. Travelers using such public transport increasingly depend on real-time information to plan their journeys. While such information can be provided by Automatic Vehicle Location (AVL) systems, AVLs depend heavily on large-scale deployment of designated sensory equipment, which may prevent their ...

  9. Modeling and Prototyping of Automatic Clutch System for Light Vehicles

    Science.gov (United States)

    Murali, S.; Jothi Prakash, V. M.; Vishal, S.

    2017-03-01

    Nowadays, recycling or regenerating the waste in to something useful is appreciated all around the globe. It reduces greenhouse gas emissions that contribute to global climate change. This study deals with provision of the automatic clutch mechanism in vehicles to facilitate the smooth changing of gears. This study proposed to use the exhaust gases which are normally expelled out as a waste from the turbocharger to actuate the clutch mechanism in vehicles to facilitate the smooth changing of gears. At present, clutches are operated automatically by using an air compressor in the four wheelers. In this study, a conceptual design is proposed in which the clutch is operated by the exhaust gas from the turbocharger and this will remove the usage of air compressor in the existing system. With this system, usage of air compressor is eliminated and the riders need not to operate the clutch manually. This work involved in development, analysation and validation of the conceptual design through simulation software. Then the developed conceptual design of an automatic pneumatic clutch system is tested with proto type.

  10. Rangeland monitoring with unmanned aerial vehicles (UAVs)

    Science.gov (United States)

    Unmanned aerial vehicles (UAVs) have great potential for rangeland management applications, such as monitoring vegetation change, developing grazing strategies, determining rangeland health, and assessing remediation treatment effectiveness. UAVs have several advantages: they can be deployed quickly...

  11. Research on Fuzzy Control for Automatic Transmission of Tracked Vehicles

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A principle of fuzzy control for tracked vehicles is proposed to make its automatic transmission system be able to adapt complex running conditions, and a model of its power train is established to be used in simulation. Based on the fuzzy control method, a fuzzy shift control system composed of a basic shift strategy and a fuzzy modification module is developed to improve the dynamic characteristics and cross-country maneuverability. Simulation results show that the fuzzy shift strategy can improve the shift quality under manifold driving conditions and avoid cycled shift effectively. Therefore,the proposed fuzzy shift strategies are proved to be feasible and practicable.

  12. Automatically Collecting and Monitoring Japanese Weblogs

    Science.gov (United States)

    Nanno, Tomoyuki; Suzuki, Yasuhiro; Fujiki, Toshiaki; Okumura, Manabu

    Weblogs (blogs) are now thought of as a potentially useful information source. Although the definition of blogs is not necessarily definite, it is generally understood that they are personal web pages authored by a single individual and made up of a sequence of dated entries of the author's thoughts, that are arranged chronologically. In Japan, since long before blog software became available, people have written `diaries' on the web. These web diaries are quite similar to blogs in their content, and people still write them without any blog software. As we will show, hand-edited blogs are quite numerous in Japan, though most people now think of blogs as pages usually published using one of the variants of public-domain blog software. Therefore, it is quite difficult to exhaustively collect Japanese blogs, i.e., collect blogs made with blog software and web diaries written as normal web pages. With this as the motivation for our work, we present a system that tries to automatically collect and monitor Japanese blog collections that include not only ones made with blog software but also ones written as normal web pages. Our approach is based on extraction of date expressions and analysis of HTML documents, to avoid having to depend on specific blog software, RSS, or the ping server.

  13. A neutron portal monitor for vehicles

    Energy Technology Data Exchange (ETDEWEB)

    Coop, K.L.; Fehlau, P.E.; Atwater, H.F.

    1987-07-12

    We have designed and built a portal vehicle monitoring systems for detecting neutron-emitting special nuclear material (SNM) such as plutonium. Monte Carlo calculations were used to optimize the design of the 15-cm-deep x 122-cm-high x 244-cm-long detector chambers, which utilize /sup 3/He proportional counters inside a hollow polyethylene box. Results for a variety of parametric studies, including polyethylene thickness and detector number, are described. Our experimental measurements are in good agreement with the computer calculations. The monitor's decision logic uses the Sequential Probability Ratio Test (SPRT) on Poisson distributed counting data, which is superior to other statistical tests in many applications. We performed computer simulations of the SPRT logic to determine expected false-positive decision rates. A controller unit of our design that uses this SPRT was built commercially. The cost of the complete monitoring system is similar to that of vehicle portal monitors that detect gamma rays. This new neutron monitor can serve as an addition to standard gamma-ray vehicle portals or as a stand-alone portal monitor in particular safeguards monitoring situations. The monitor is being tested at Los Alamos and is scheduled for in-plant evaluation of another DOE facility in 1987. 7 refs.

  14. Automatic respiration monitoring system; Shushin jotai no jido monitoring system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    This is a system to recognize automatically status of a person in sleep including respiration stop, toss about in bed, and departure from the bed by performing animated image processing on images of the person in sleep as photographed by a camera, and by obtaining respiration waveforms from changes in the images of the breast. The system has been developed jointly by the Medical Department of Ehime University and Toshiba Engineering Company when commissioned from the Silver Service Promotion Association as a two-year project. The system requires no operation by an operator, can monitor the respiration during sleep on a real time basis from a completely non-restraint condition, and can be utilized for early discovery of crib death and/or apneic syndrome of aged persons and infants. Its effectiveness was verified by the field tests at a special facility for physically and mentally handicapped aged persons. The system was awarded with the first grand prize for an image recognition system from the Japan Automatic Recognition System Association. (translated by NEDO)

  15. OPTIMAL CONTROL APPLIED IN AUTOMATIC CLUTCH ENGAGEMENTS OF VEHICLES

    Institute of Scientific and Technical Information of China (English)

    Sun Chengshun; Zhang Jianwu

    2004-01-01

    Start-up working condition is the key to the research of optimal engagement of automatic clutch for AMT.In order to guarantee an ideal dynamic performance of the clutch engagement,an optimal controller is designed by considering throttle angle,engine speed,gear ratio,vehicle acceleration and road condition.The minimum value principle is also introduced to achieve an optimal dynamic performance of the nonlinear system compromised in friction plate wear and vehicle drive quality.The optimal trajectory of the clutch engagement can be described in the form of explicit and analytical expressions and characterized by the deterministic and accurate control strategy in stead of indeterministic and soft control techniques which need thousands of experiments.For validation of the controller,test work is carried out for the automated clutch engagements in a commercial car with an traditional mechanical transmission,a hydraulic actuator,a group of sensors and a portable computer system.It is shown through experiments that dynamic behaviors of the clutch engagement operated by the optimal control are more effective and efficient than those by fuzzy control.

  16. Carrier-phase differential GPS for automatic control of land vehicles

    Science.gov (United States)

    O'Connor, Michael Lee

    Real-time centimeter-level navigation has countless potential applications in land vehicles, including precise topographic field mapping, runway snowplowing in bad weather, and land mine detection and avoidance. Perhaps the most obvious and immediate need for accurate, robust land vehicle sensing is in the guidance and control of agricultural vehicles. Accurate guidance and automatic control of farm vehicles offers many potential advantages; however, previous attempts to automate these vehicles have been unsuccessful due to sensor limitations. With the recent development of real-time carrier-phase differential GPS (CDGPS), a single inexpensive GPS receiver can measure a vehicle's position to within a few centimeters and orientation to fractions of a degree. This ability to provide accurate real-time measurements of multiple vehicle states makes CDGPS ideal for automatic control of vehicles. This work describes the theoretical and experimental work behind the first successfully demonstrated automatic control system for land vehicles based on CDGPS. An extension of pseudolite-based CDGPS initialization methods was explored for land vehicles and demonstrated experimentally. Original land vehicle dynamic models were developed and identified using this innovative sensor. After initial automatic control testing using a Yamaha Fleetmaster golf cart, a centimeter-level, fully autonomous row guidance capability was demonstrated on a John Deere 7800 farm tractor.

  17. Precision wildlife monitoring using unmanned aerial vehicles

    OpenAIRE

    Jarrod C. Hodgson; Baylis, Shane M.; Rowan Mott; Ashley Herrod; Clarke, Rohan H.

    2016-01-01

    Unmanned aerial vehicles (UAVs) represent a new frontier in environmental research. Their use has the potential to revolutionise the field if they prove capable of improving data quality or the ease with which data are collected beyond traditional methods. We apply UAV technology to wildlife monitoring in tropical and polar environments and demonstrate that UAV-derived counts of colony nesting birds are an order of magnitude more precise than traditional ground counts. The increased count pre...

  18. Measuring Service Reliability Using Automatic Vehicle Location Data

    Directory of Open Access Journals (Sweden)

    Zhenliang Ma

    2014-01-01

    Full Text Available Bus service reliability has become a major concern for both operators and passengers. Buffer time measures are believed to be appropriate to approximate passengers' experienced reliability in the context of departure planning. Two issues with regard to buffer time estimation are addressed, namely, performance disaggregation and capturing passengers’ perspectives on reliability. A Gaussian mixture models based method is applied to disaggregate the performance data. Based on the mixture models distribution, a reliability buffer time (RBT measure is proposed from passengers’ perspective. A set of expected reliability buffer time measures is developed for operators by using different spatial-temporal levels combinations of RBTs. The average and the latest trip duration measures are proposed for passengers that can be used to choose a service mode and determine the departure time. Using empirical data from the automatic vehicle location system in Brisbane, Australia, the existence of mixture service states is verified and the advantage of mixture distribution model in fitting travel time profile is demonstrated. Numerical experiments validate that the proposed reliability measure is capable of quantifying service reliability consistently, while the conventional ones may provide inconsistent results. Potential applications for operators and passengers are also illustrated, including reliability improvement and trip planning.

  19. Developing Automatic System Monitoring Solution for Accanto Systems Customer Care

    OpenAIRE

    Mikkola, Markku

    2015-01-01

    The goal of the development work was to document the requirements, to develop and deploy an automatic system monitoring solution for Accanto Systems Customer Care. This final report describes Icinga Core as the backbone of the monitoring solution and presents the actual use case that was implemented for Accanto Systems. The client for this work was Accanto Systems Customer Care department which had been suffering a long time with high work load due to increased basic system monitoring tas...

  20. Efficient and automatic wireless geohazard monitoring

    Science.gov (United States)

    Rubin, Marc J.

    In this dissertation, we present our research contributions geared towards creating an automated and efficient wireless sensor network (WSN) for geohazard monitoring. Specifically, this dissertation addresses three overall technical research problems inherent in implementing and deploying such a WSN, i.e., 1) automated event detection from geophysical data, 2) efficient wireless transmission, and 3) low-cost wireless hardware. In addition, after presenting algorithms, experimentation, and results from these three overall problems, we take a step back and discuss how, when, and why such scientific work matters in a geohazardous risk scenario. First, in Chapter 2, we discuss automated geohazard event detection within geophysical data. In particular, we present our pattern recognition workflow that can automatically detect snow avalanche events in seismic (geophone sensor) data. This workflow includes customized signal preprocessing for feature extraction, cluster-based stratified sub-sampling for majority class reduction, and experimentation with 12 different machine learning algorithms; results show that a decision stump classifier achieved 99.8% accuracy, 88.8% recall, and 13.2% precision in detecting avalanches within seismic data collected in the mountains above Davos, Switzerland, an improvement on previous work in the field. To address the second overall research problem (i.e., efficient wireless transmission), we present and evaluate our on-mote compressive sampling algorithm called Randomized Timing Vector (RTV) in Chapter 3 and compare our approach to four other on-mote, lossy compression algorithms in Chapter 4. Results from our work show that our RTV algorithm outperforms current on-mote compressive sampling algorithms and performs comparably to (and in many cases better than) the four state-of-the-art, on-mote lossy compression techniques. The main benefit of RTV is that it can guarantee a desired level of compression performance (and thus, radio usage

  1. Automatic calorimetry system monitors RF power

    Science.gov (United States)

    Harness, B. W.; Heiberger, E. C.

    1969-01-01

    Calorimetry system monitors the average power dissipated in a high power RF transmitter. Sensors measure the change in temperature and the flow rate of the coolant, while a multiplier computes the power dissipated in the RF load.

  2. A Dynamic Visualization Environment For The Design And Evaluation Of Automatic Vehicle Control Systems

    OpenAIRE

    Xu, Z.

    1995-01-01

    This document presents Dynamic Visualization, a project associated with the California PATH Program. The objective of the project is to develop a software which can animate automated highways, visualize the dynamics of automatic vehicles, and help the design and evaluation of automatic vehicle systems. This report summarizes the accomplishments of the project, describes the functions of the developed software, and provides an explanation of how to use the software.

  3. Real-time vehicle emission monitoring along roadsides

    NARCIS (Netherlands)

    Stelwagen, U.; Lange, R. de; Ligterink, N.E.; Klunder, G.A.; Bigazzi, A.; Duyzer, J.H.; Baalen, J. van; Katwijk, R.T. van; Kruithof, M.C.; Ratingen, S. van; Weststrate, J.H.; Wilmink, I.R.

    2010-01-01

    In the worldwide efforts to reduce the emissions of greenhouse gasses in general and those emitted by vehicles in particular, vehicle emission monitoring is important. It provides accurate knowledge of real-world emissions of vehicles as input for vehicle emission models. Real-time emission monitori

  4. Requirements to a Norwegian national automatic gamma monitoring system

    DEFF Research Database (Denmark)

    Lauritzen, B.; Jensen, Per Hedemann; Nielsen, F.

    2005-01-01

    An assessment of the overall requirements to a Norwegian gamma-monitoring network is undertaken with special emphasis on the geographical distribution of automatic gamma monitoring stations, type of detectors in such stations and the sensitivity of thesystem in terms of ambient dose equivalent rate...... large distances using historical weather data; the minimum density is estimated from the requirement that a radioactive plume may not slip unnoticed inbetween stations of the monitoring network. The sensitivity of the gamma monitoring system is obtained from the condition that events that may require...

  5. Development of a Vehicle Special Nuclear Material Monitors

    Institute of Scientific and Technical Information of China (English)

    ZHAORong-sheng

    2003-01-01

    Vehicle special nuclear material (SNM) monitors are mainly used at the portals of nuclear facilities to verify the vehicles going out from the facilities for preventing from unauthorized SNM transfer.

  6. Precision wildlife monitoring using unmanned aerial vehicles

    Science.gov (United States)

    Hodgson, Jarrod C.; Baylis, Shane M.; Mott, Rowan; Herrod, Ashley; Clarke, Rohan H.

    2016-03-01

    Unmanned aerial vehicles (UAVs) represent a new frontier in environmental research. Their use has the potential to revolutionise the field if they prove capable of improving data quality or the ease with which data are collected beyond traditional methods. We apply UAV technology to wildlife monitoring in tropical and polar environments and demonstrate that UAV-derived counts of colony nesting birds are an order of magnitude more precise than traditional ground counts. The increased count precision afforded by UAVs, along with their ability to survey hard-to-reach populations and places, will likely drive many wildlife monitoring projects that rely on population counts to transition from traditional methods to UAV technology. Careful consideration will be required to ensure the coherence of historic data sets with new UAV-derived data and we propose a method for determining the number of duplicated (concurrent UAV and ground counts) sampling points needed to achieve data compatibility.

  7. Precision wildlife monitoring using unmanned aerial vehicles.

    Science.gov (United States)

    Hodgson, Jarrod C; Baylis, Shane M; Mott, Rowan; Herrod, Ashley; Clarke, Rohan H

    2016-03-17

    Unmanned aerial vehicles (UAVs) represent a new frontier in environmental research. Their use has the potential to revolutionise the field if they prove capable of improving data quality or the ease with which data are collected beyond traditional methods. We apply UAV technology to wildlife monitoring in tropical and polar environments and demonstrate that UAV-derived counts of colony nesting birds are an order of magnitude more precise than traditional ground counts. The increased count precision afforded by UAVs, along with their ability to survey hard-to-reach populations and places, will likely drive many wildlife monitoring projects that rely on population counts to transition from traditional methods to UAV technology. Careful consideration will be required to ensure the coherence of historic data sets with new UAV-derived data and we propose a method for determining the number of duplicated (concurrent UAV and ground counts) sampling points needed to achieve data compatibility.

  8. Hybrid three-dimensional and support vector machine approach for automatic vehicle tracking and classification using a single camera

    Science.gov (United States)

    Kachach, Redouane; Cañas, José María

    2016-05-01

    Using video in traffic monitoring is one of the most active research domains in the computer vision community. TrafficMonitor, a system that employs a hybrid approach for automatic vehicle tracking and classification on highways using a simple stationary calibrated camera, is presented. The proposed system consists of three modules: vehicle detection, vehicle tracking, and vehicle classification. Moving vehicles are detected by an enhanced Gaussian mixture model background estimation algorithm. The design includes a technique to resolve the occlusion problem by using a combination of two-dimensional proximity tracking algorithm and the Kanade-Lucas-Tomasi feature tracking algorithm. The last module classifies the shapes identified into five vehicle categories: motorcycle, car, van, bus, and truck by using three-dimensional templates and an algorithm based on histogram of oriented gradients and the support vector machine classifier. Several experiments have been performed using both real and simulated traffic in order to validate the system. The experiments were conducted on GRAM-RTM dataset and a proper real video dataset which is made publicly available as part of this work.

  9. Automatic outdoor monitoring system for photovoltaic panels.

    Science.gov (United States)

    Stefancich, Marco; Simpson, Lin; Chiesa, Matteo

    2016-05-01

    Long-term acquisition of solar panel performance parameters, for panels operated at maximum power point in their real environment, is of critical importance in the photovoltaic research sector. However, few options exist for the characterization of non-standard panels such as concentrated photovoltaic systems, heavily soiled or shaded panels or those operating under non-standard spectral illumination; certainly, it is difficult to find such a measurement system that is flexible and affordable enough to be adopted by the smaller research institutes or universities. We present here an instrument aiming to fill this gap, autonomously tracking and maintaining any solar panel at maximum power point while continuously monitoring its operational parameters and dissipating the produced energy without connection to the power grid. The instrument allows periodic acquisition of current-voltage curves to verify the employed maximum power point tracking approach. At the same time, with hardware schematics and software code being provided, it provides a flexible open development environment for the monitoring of non-standard generators like concentrator photovoltaic systems and to test novel power tracking approaches. The key issues, and the corresponding solutions, encountered in the design are analyzed in detail and the relevant schematics presented.

  10. Automatic outdoor monitoring system for photovoltaic panels

    Science.gov (United States)

    Stefancich, Marco; Simpson, Lin; Chiesa, Matteo

    2016-05-01

    Long-term acquisition of solar panel performance parameters, for panels operated at maximum power point in their real environment, is of critical importance in the photovoltaic research sector. However, few options exist for the characterization of non-standard panels such as concentrated photovoltaic systems, heavily soiled or shaded panels or those operating under non-standard spectral illumination; certainly, it is difficult to find such a measurement system that is flexible and affordable enough to be adopted by the smaller research institutes or universities. We present here an instrument aiming to fill this gap, autonomously tracking and maintaining any solar panel at maximum power point while continuously monitoring its operational parameters and dissipating the produced energy without connection to the power grid. The instrument allows periodic acquisition of current-voltage curves to verify the employed maximum power point tracking approach. At the same time, with hardware schematics and software code being provided, it provides a flexible open development environment for the monitoring of non-standard generators like concentrator photovoltaic systems and to test novel power tracking approaches. The key issues, and the corresponding solutions, encountered in the design are analyzed in detail and the relevant schematics presented.

  11. Unattended vehicle detection for automatic traffic light control

    Science.gov (United States)

    Abdel Hady, Aya Salama; Moustafa, Mohamed

    2013-12-01

    Machine vision based traffic light control depends mainly on measuring traffic statistics at cross roads. Most of the previous studies have not taken unattended vehicles into consideration when calculating either the traffic density or the traffic flow. In this paper, we propose incorporating unattended vehicles into a new metric for measuring the traffic congestion. In addition to the vehicle motion analysis, opening the driver's side door is an important indicator that this vehicle is going to be unattended. Therefore, we focus in this paper on presenting how to detect this event for stationary vehicles from a live camera or a video feed. Through a set of experiments, we have found out that a Scale Invariant Feature Transform (SIFT) feature-descriptor with a Support Vector Machines (SVM) classifier was able to successfully classify open-door vehicles from closed-door ones in 96.7% of our test dataset.

  12. Large vehicle portal monitor for perimeter safeguards applications

    Energy Technology Data Exchange (ETDEWEB)

    Caldwell, J.T.; Atwater, H.F.; Bernard, W.; Bieri, J.M.; Shunk, E.R.

    1979-01-01

    We have developed a class of vehicle portal monitors based on shielded 4..pi.. geometry neutron counting. we have derived and experimentally verified an analytical expression relating the detection sensitivity of the neutron tunnel vehicle portal monitor to four design parameters of the system. For a given number of neutron detectors, this design achieves one or more orders of magnitude improvement in nuclear materials detection sensitivity over previous vehicle portal monitors.

  13. Comparative Analysis of Automatic Vehicle Classification Techniques: A Survey

    Directory of Open Access Journals (Sweden)

    Kanwal Yousaf

    2012-09-01

    Full Text Available Vehicle classification has emerged as a significant field of study because of its importance in variety of applications like surveillance, security system, traffic congestion avoidance and accidents prevention etc. So far numerous algorithms have been implemented for classifying vehicle. Each algorithm follows different procedures for detecting vehicles from videos. By evaluating some of the commonly used techniques we highlighted most beneficial methodology for classifying vehicles. In this paper we pointed out the working of several video based vehicle classification algorithms and compare these algorithms on the basis of different performance metrics such as classifiers, classification methodology or principles and vehicle detection ratio etc. After comparing these parameters we concluded that Hybrid Dynamic Bayesian Network (HDBN Classification algorithm is far better than the other algorithms due to its nature of estimating the simplest features of vehicles from different videos. HDBN detects vehicles by following important stages of feature extraction, selection and classification. It extracts the rear view information of vehicles rather than other information such as distance between the wheels and height of wheel etc.

  14. Application of Machine Vision to Vehicle Automatic Collision Warning Algorithm

    Institute of Scientific and Technical Information of China (English)

    WANG Jiang-feng; GAO Feng; XU Guo-yan; YAO Sheng-zhuo

    2008-01-01

    Using the new technologies such as information technology, communication technology and electronic control technology, vehicle collision warning system(CWS) can acquire road condition, adjacent vehicle march condition as well as its dynamics performance continuously, then it can forecast the oncoming potential collision and give a warning. Based on the analysis of driver's driving behavior, algorithm's warning norms are determined. Based on warning norms adopting machine vision method, the cooperation collision warning algorithm(CWA) model with multi-input and multi-output is established which is used in supporting vehicle CWS. The CWA is tested using the actual data and the result shows that this algorithm can identify and carry out warning for vehicle collision efficiently, which has important meaning for improving the vehicle travel safety.

  15. The systems of automatic weight control of vehicles in the road and rail transport in Poland

    Directory of Open Access Journals (Sweden)

    2011-09-01

    Full Text Available . Condition of roads in Poland, despite the on-going modernisation works is still unsatisfactory. One reason is the excessive wear caused by overloaded vehicles. This problem also applies to rail transport, although to a much lesser extent. One solution may be the system of automatic weight control of road and rail vehicles. The article describes the legal and organizational conditions of oversize vehicles inspection in Poland. Characterized current practices weighing road vehicles, based on measurements of static technology. The article includes the description of the existing applications of the automatic dynamic weighing technology, known as systems WIM (Weigh in Motion. Additionally, the weighing technology and construction of weighing stands in road and rail are characterized. The article ends with authors' conclusions indicating the direction and ways of improving the weighing control systems for vehicles.

  16. Derivation and Testing of Computer Algorithms for Automatic Real-Time Determination of Space Vehicle Potentials in Various Plasma Environments

    Science.gov (United States)

    1988-05-31

    COMPUTER ALGORITHMS FOR AUTOMATIC REAL-TIME DETERMINATION OF SPACE VEHICLE POTENTIALS IN VARIOUS PLASMA ENVIRONMENTS May 31, 1988 Stanley L. Spiegel...crrnaion DiviSiofl 838 12 2 DERIVATION AND TESTING OF COMPUTER ALGORITHMS FOR AUTOMATIC REAL-TIME DETERMINATION OF SPACE VEHICLE POTENTIALS IN VARIOUS...S.L., "Derivation and testing of computer algorithms for automatic real time determination of space vehicle poteuatials in various plasma

  17. Poster Abstract: Automatic Calibration of Device Attitude in Inertial Measurement Unit Based Traffic Probe Vehicles

    KAUST Repository

    Mousa, Mustafa

    2016-04-28

    Probe vehicles consist in mobile traffic sensor networks that evolve with the flow of vehicles, transmitting velocity and position measurements along their path, generated using GPSs. To address the urban positioning issues of GPSs, we propose to replace them with inertial measurement units onboard vehicles, to estimate vehicle location and attitude using inertial data only. While promising, this technology requires one to carefully calibrate the orientation of the device inside the vehicle to be able to process the acceleration and rate gyro data. In this article, we propose a scheme that can perform this calibration automatically by leveraging the kinematic constraints of ground vehicles, and that can be implemented on low-end computational platforms. Preliminary testing shows that the proposed scheme enables one to accurately estimate the actual accelerations and rotation rates in the vehicle coordinates. © 2016 IEEE.

  18. A Wireless Framework for Lecturers' Attendance System with Automatic Vehicle Identification (AVI Technology

    Directory of Open Access Journals (Sweden)

    Emammer Khamis Shafter

    2015-10-01

    Full Text Available Automatic Vehicle Identification (AVI technology is one type of Radio Frequency Identification (RFID method which can be used to significantly improve the efficiency of lecturers' attendance system. It provides the capability of automatic data capture for attendance records using mobile device equipped in users’ vehicle. The intent of this article is to propose a framework for automatic lecturers' attendance system using AVI technology. The first objective of this work involves gathering of requirements for Automatic Lecturers' Attendance System and to represent them using UML diagrams. The second objective is to put forward a framework that will provide guidelines for developing the system. A prototype has also been created as a pilot project.

  19. MaNIAC-UAV - a methodology for automatic pavement defects detection using images obtained by Unmanned Aerial Vehicles

    Science.gov (United States)

    Henrique Castelo Branco, Luiz; César Lima Segantine, Paulo

    2015-09-01

    Intelligent Transportation Systems - ITS is a set of integrated technologies (Remote Sensing, Image Processing, Communications Systems and others) that aim to offer services and advanced traffic management for the several transportation modes (road, air and rail). Collect data on the characteristics and conditions of the road surface and keep them update is an important and difficult task that needs to be currently managed in order to reduce accidents and vehicle maintenance costs. Nowadays several roads and highways are paved, but usually there is insufficient updated data about current condition and status. There are different types of pavement defects on the roads and to keep them in good condition they should be constantly monitored and maintained according to pavement management strategy. This paper presents a methodology to obtain, automatically, information about the conditions of the highway asphalt pavement. Data collection was done through remote sensing using an UAV (Unmanned Aerial Vehicle) and the image processing and pattern recognition techniques through Geographic Information System.

  20. Vehicle Monitoring And Diagnostic Using IMS Architecture

    Directory of Open Access Journals (Sweden)

    Munir Sayyad,

    2011-04-01

    Full Text Available Convergence of technologies is important in this era to make progress in any field. The need to converge technologies arises from the concept of improvisation. This paper proposes a system architecture which is used to diagnose vehicle parameters and then relay the data via a feasible next generation network based on IMS architecture to a central server. Vehicles are to be equipped with a simple portable scan tool (PST device which will interface with the OBD-II port of the vehicle and record the diagnostic data and relay them to the server. Further if the vehicle owner wants real time remote updates of the vehicle then it can be done by using his/her cellular device. IMS architecture simplifies the process of user registration and help in achieving faster transmission speed. Lastly various secondary applications can be generated by this system as by using thissystem the vehicles are getting connected on a grid.

  1. Study on shift schedule saving energy of automatic transmission of ground vehicles

    Institute of Scientific and Technical Information of China (English)

    龚捷; 赵丁选; 陈鹰; 陈宁

    2004-01-01

    To improve ground vehicle efficiency, shift schedule energy saving was proposed for the ground vehicle automatic transmission by studying the function of the torque converter and transmission in the vehicular drivetrain. The shift schedule can keep the torque converter working in the high efficiency range under all the working conditions except in the low efficiency range on the left when the transmission worked at the lowest shift, and in the low efficiency range on the right when the transmission worked at the highest shift. The shift quality key factors were analysed. The automatic trans-mission's bench-test adopting this shift schedule was made on the automatic transmission's test-bed. The experimental results showed that the shift schedule was correct and that the shift quality was controllable.

  2. Study on shift schedule saving energy of automatic transmission of ground vehicles

    Institute of Scientific and Technical Information of China (English)

    龚捷; 赵丁选; 陈鹰; 陈宁

    2004-01-01

    To improve ground vehicle efficiency,shift schedule energy saving was proposed for the ground vehicle automatic transmission by studying the function of the torque converter and transmission in the vehicular drivetrain.The shift schedule can keep the torque converter working in the high efficiency range under all the working conditions except in the low efficiency range on the left when the transmission worked at the lowest shift,and in the low efficiency range on the right when the transmission worked at the highest shift.The shift quality key factors were analysed.The automatic transmission's bench-test adopting this shift schedule was made on the automatic transmission's test-bed.The experimental results showed that the shift schedule was correct and that the shift quality was controllable.

  3. Internal combustion engine for vehicles with automatic gearbox. Brennkraftmaschine fuer Kraftfahrzeuge mit einem automatischen Getriebe

    Energy Technology Data Exchange (ETDEWEB)

    Hetmann, R.

    1982-04-19

    The invention refers to an internal combustion engine for vehicles with an automatic gearbox, where the internal combustion engine has a first group of cylinders and at least one second group of cylinders, and a device for affecting the fuel supply to the groups of cylinders, depending on the working parameters of the vehicle. The invention is characterised by the fact that the working parameters are the handbrake and footbrake of the vehicle, and that the device for affecting the fuel supply to the groups of cylinders when the footbrake or handbrake is operated makes it possible to supply fuel to only part of the groups of cylinders. The control switches of both braking systems are connected to the fuel supply control via a logic circuit. This arrangement of the system prevents damage when testing the braking speed of the automatic gearbox due to excessive loads.

  4. Automatic Traffic Monitoring from an Airborne Wide Angle Camera System

    OpenAIRE

    Rosenbaum, Dominik; Charmette, Baptiste; Kurz, Franz; Suri, Sahil; Thomas, Ulrike; Reinartz, Peter

    2008-01-01

    We present an automatic traffic monitoring approach using data of an airborne wide angle camera system. This camera, namely the “3K-Camera”, was recently developed at the German Aerospace Center (DLR). It has a coverage of 8 km perpendicular to the flight direction at a flight height of 3000 m with a resolution of 45 cm and is capable to take images at a frame rate of up to 3 fps. Based on georeferenced images obtained from this camera system, a near real-time processing chain containing roa...

  5. Automatic Vehicle License Recognition Based on Video Vehicular Detection System

    Institute of Scientific and Technical Information of China (English)

    YANG Zhaoxuan; CHEN Yang; HE Yinghua; WU Jun

    2006-01-01

    Traditional methods of license character extraction cannot meet the requirements of recognition accuracy and speed rendered by the video vehicular detection system.Therefore, a license plate localization method based on multi-scale edge detection and a character segmentation algorithm based on Markov random field model is presented.Results of experiments demonstrate that the method yields more accurate license character extraction in contrast to traditional localization method based on edge detection by difference operator and character segmentation based on threshold.The accuracy increases from 90% to 94% under preferable illumination, while under poor condition, it increases more than 5%.When the two improved algorithms are used, the accuracy and speed of automatic license recognition meet the system's requirement even under the noisy circumstance or uneven illumination.

  6. Requirements to a Norwegian National Automatic Gamma Monitoring System

    Energy Technology Data Exchange (ETDEWEB)

    Lauritzen, B.; Hedemann Jensen, P.; Nielsen, F

    2005-04-01

    An assessment of the overall requirements to a Norwegian gamma-monitoring network is undertaken with special emphasis on the geographical distribution of automatic gamma monitoring stations, type of detectors in such stations and the sensitivity of the system in terms of ambient dose equivalent rate increments above the natural background levels. The study is based upon simplified deterministic calculations of the radiological consequences of generic nuclear accident scenarios. The density of gamma monitoring stations has been estimated from an analysis of the dispersion of radioactive materials over large distances using historical weather data; the minimum density is estimated from the requirement that a radioactive plume may not slip unnoticed in between stations of the monitoring network. The sensitivity of the gamma monitoring system is obtained from the condition that events that may require protective intervention measures should be detected by the system. Action levels for possible introduction of sheltering and precautionary foodstuff restrictions are derived in terms of ambient dose equivalent rate. For emergency situations where particulates contribute with only a small fraction of the total ambient dose equivalent rate from the plume, it is concluded that measurements of dose rate are sufficient to determine the need for sheltering; simple dose rate measurements however, are inadequate to determine the need for foodstuff restrictions and spectral measurements are required. (au)

  7. Automatic speed control of highway traffic

    Science.gov (United States)

    Klingman, E. E.

    1973-01-01

    Vehicle control system monitors all vehicles in its range, and automatically slows down speeding vehicles by activating governor in vehicle. System determines only maximum speed; speeds below maximum are controlled by vehicle operator. Loss of transmitted signal or activation of emergency over-ride will open fuel line and return control to operator.

  8. Design and Implementation of a Modern Automatic Deformation Monitoring System

    Science.gov (United States)

    Engel, Philipp; Schweimler, Björn

    2016-03-01

    The deformation monitoring of structures and buildings is an important task field of modern engineering surveying, ensuring the standing and reliability of supervised objects over a long period. Several commercial hardware and software solutions for the realization of such monitoring measurements are available on the market. In addition to them, a research team at the University of Applied Sciences in Neubrandenburg (NUAS) is actively developing a software package for monitoring purposes in geodesy and geotechnics, which is distributed under an open source licence and free of charge. The task of managing an open source project is well-known in computer science, but it is fairly new in a geodetic context. This paper contributes to that issue by detailing applications, frameworks, and interfaces for the design and implementation of open hardware and software solutions for sensor control, sensor networks, and data management in automatic deformation monitoring. It will be discussed how the development effort of networked applications can be reduced by using free programming tools, cloud computing technologies, and rapid prototyping methods.

  9. An embedded omnidirectional vision navigator for automatic guided vehicles

    Science.gov (United States)

    Feng, Weijia; Zhang, Baofeng; Röning, Juha; Cao, Zuoliang; Zong, Xiaoning

    2011-01-01

    Omnidirectional vision appears the definite significance since its advantage of acquiring full 360° horizontal field of vision information simultaneously. In this paper, an embedded original omnidirectional vision navigator (EOVN) based on fish-eye lens and embedded technology has been researched. Fish-eye lens is one of the special ways to establish omnidirectional vision. However, it appears with an unavoidable inherent and enormous distortion. A unique integrated navigation method which is conducted on the basis of targets tracking has been proposed. It is composed of multi-target recognition and tracking, distortion rectification, spatial location and navigation control. It is called RTRLN. In order to adapt to the different indoor and outdoor navigation environments, we implant mean-shift and dynamic threshold adjustment into the Particle Filter algorithm to improve the efficiency and robustness of tracking capability. RTRLN has been implanted in an independent development embedded platform. EOVN likes a smart crammer based on COMS+FPGA+DSP. It can guide various vehicles in outdoor environments by tracking the diverse marks hanging in the air. The experiments prove that the EOVN is particularly suitable for the guidance applications which need high requirements on precision and repeatability. The research achievements have a good actual applied inspection.

  10. Bond graph modeling, simulation, and reflex control of the Mars planetary automatic vehicle

    Science.gov (United States)

    Amara, Maher; Friconneau, Jean Pierre; Micaelli, Alain

    1993-01-01

    The bond graph modeling, simulation, and reflex control study of the Planetary Automatic Vehicle are considered. A simulator derived from a complete bond graph model of the vehicle is presented. This model includes both knowledge and representation models of the mechanical structure, the floor contact, and the Mars site. The MACSYMEN (French acronym for aided design method of multi-energetic systems) is used and applied to study the input-output power transfers. The reflex control is then considered. Controller architecture and locomotion specificity are described. A numerical stage highlights some interesting results of the robot and the controller capabilities.

  11. Automatic Monitoring Electronic Tongue with MEAs for Environmental Analysis

    Institute of Scientific and Technical Information of China (English)

    Shaofang Zou; Hong Men; Yi Li; Yinping Wang; Ping Wang

    2006-01-01

    An automatic monitoring electronic tongue based on differential pulse stripping voltammetry (DPSV) was developed for heavy metals analysis. Simultaneous detections of trace Zn(Ⅱ), Cd(Ⅱ), Pb(Ⅱ), Cu(Ⅱ), Fe(Ⅲ) and Cr(Ⅲ) in water samples were performed with three electrochemical sensors. The sensor chip combined a silicon-based Hg-coated Au microelectrode array (MEA) as the working electrode on one side with an Ag/AgCl reference electrode and a Pt counter electrode on the other side. With a computer controlled multipotentiostat, pumps and valves, the electronic tongue realized in-situ real-time detection of the six metals mentioned above at parts-per-billion level without manual operation.

  12. An Automatic System of Vehicle Number-Plate Recognition Based on Neural Networks

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    This paper presents an automatic system of vehicle number-plate recognition based on neural networks. In this system, location of number-plate and recognition of characters in number-plate can be automatically completed. Pixel colors of Number-plate area are classified using neural network, then color features are extracted by analyzing scanning lines of the cross-section of number-plate. It takes full use of number-plate color features to locate number plate. Characters in number-plate can be effectively recognized using the neural networks. Experimental results show that the correct rate of number-plate location is close to 100%, and the time of number-plate location is less than 1 second. Moreover, recognition rate of characters is improved due to the known number-plate type. It is also observed that this system is not sensitive to variations of weather, illumination and vehicle speed. In addition, and also the size of number-plate need not to be known in prior. This system is of crucial significance to apply and spread the automatic system of vehicle number-plate recognition.

  13. A Review of Indirect Bridge Monitoring Using Passing Vehicles

    Directory of Open Access Journals (Sweden)

    Abdollah Malekjafarian

    2015-01-01

    Full Text Available Indirect bridge monitoring methods, using the responses measured from vehicles passing over bridges, are under development for about a decade. A major advantage of these methods is that they use sensors mounted on the vehicle, no sensors or data acquisition system needs to be installed on the bridge. Most of the proposed methods are based on the identification of dynamic characteristics of the bridge from responses measured on the vehicle, such as natural frequency, mode shapes, and damping. In addition, some of the methods seek to directly detect bridge damage based on the interaction between the vehicle and bridge. This paper presents a critical review of indirect methods for bridge monitoring and provides discussion and recommendations on the challenges to be overcome for successful implementation in practice.

  14. Regenerative braking control strategy in mild hybrid electric vehicles equipped with automatic manual transmission

    Institute of Scientific and Technical Information of China (English)

    QIN Datong; YE Ming; LIU Zhenjun

    2007-01-01

    The actual regenerative braking force of an integrated starter/generator (ISG),which is varied with desired braking deceleration and vehicle speed,is calculated based on an analysis of the required deceleration,maximum braking force of ISG,engine braking force and state of charge (SOC) of battery.Braking force distribution strategies are presented according to the actual regenerative braking force of ISG.To recover the vehicle's kinetic energy maximally,braking shift rules for a mild hybrid electric vehicle (HEV) equipped with automatic manual transmission (AMT) are brought forward and effects of transmission ratios are considered.A test-bed is built up and regenerative braking tests are carried out.The results show that power recovered by the braking shift rules is more than that recovered by the normal braking control rules.

  15. Acoustic Monitoring for Spaceflight Vehicle Applications Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This SBIR will develop and demonstrate acoustic sensor technology enabling real-time, remotely performed measuring and monitoring of sound pressure levels and noise...

  16. Vehicle-to-Grid Automatic Load Sharing with Driver Preference in Micro-Grids

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Yubo; Nazaripouya, Hamidreza; Chu, Chi-Cheng; Gadh, Rajit; Pota, Hemanshu R.

    2014-10-15

    Integration of Electrical Vehicles (EVs) with power grid not only brings new challenges for load management, but also opportunities for distributed storage and generation. This paper comprehensively models and analyzes distributed Vehicle-to-Grid (V2G) for automatic load sharing with driver preference. In a micro-grid with limited communications, V2G EVs need to decide load sharing based on their own power and voltage profile. A droop based controller taking into account driver preference is proposed in this paper to address the distributed control of EVs. Simulations are designed for three fundamental V2G automatic load sharing scenarios that include all system dynamics of such applications. Simulation results demonstrate that active power sharing is achieved proportionally among V2G EVs with consideration of driver preference. In additional, the results also verify the system stability and reactive power sharing analysis in system modelling, which sheds light on large scale V2G automatic load sharing in more complicated cases.

  17. Surfzone monitoring using rotary wing unmanned aerial vehicles

    NARCIS (Netherlands)

    Brouwer, R.L.; De Schipper, M.A.; Rynne, P.F.; Graham, F.J.; Reniers, A.J.H.M.; Macmahan, J.H.

    2015-01-01

    This study investigates the potential of rotary wing unmanned aerial vehicles (UAVs) to monitor the surfzone. This paper shows that these UAVs are extremely flexible surveying platforms that can gather nearcontinuous moderate spatial resolution and high temporal resolution imagery from a fixed posit

  18. Correlation analysis-based image segmentation approach for automatic agriculture vehicle

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    It is important to segment image correctly to extract guidance information for automatic agriculture vehicle. If we can make the computer know where the crops are, we can extract the guidance line easily. Images were divided into some rectangle small windows, then a pair of 1-D arrays was constructed in each small windows. The correlation coefficients of every small window constructed the features to segment images. The results showed that correlation analysis is a potential approach for processing complex farmland for guidance system, and more correlation analysis methods must be researched.

  19. OPTIMAL TORQUE CONTROL STRATEGY FOR PARALLEL HYBRID ELECTRIC VEHICLE WITH AUTOMATIC MECHANICAL TRANSMISSION

    Institute of Scientific and Technical Information of China (English)

    GU Yanchun; YIN Chengliang; ZHANG Jianwu

    2007-01-01

    In parallel hybrid electrical vehicle (PHEV) equipped with automatic mechanical transmission (AMT), the driving smoothness and the clutch abrasion are the primary considerations for powertrain control during gearshift and clutch operation. To improve these performance indexes of PHEV, a coordinated control system is proposed through the analyzing of HEV powertrain dynamic characteristics. Using the method of minimum principle, the input torque of transmission is optimized to improve the driving sinoothness of vehicle. Using the methods of fuzzy logic and fuzzy-PID, the engaging speed of clutch and the throttle opening of engine are manipulated to ensure the smoothness of clutch engagement and reduce the abrasion of clutch friction plates. The motor provides the difference between the required input torque of transmission and the torque transmitted through clutch plates. Results of simulation and experiments show that the proposed control strategy performs better than the contrastive control system, the smoothness of driving and the abrasion of clutch can be improved simultaneously.

  20. Robust Vehicle Detection under Various Environmental Conditions Using an Infrared Thermal Camera and Its Application to Road Traffic Flow Monitoring

    Directory of Open Access Journals (Sweden)

    Toshiyuki Nakamiya

    2013-06-01

    Full Text Available We have already proposed a method for detecting vehicle positions and their movements (henceforth referred to as “our previous method” using thermal images taken with an infrared thermal camera. Our experiments have shown that our previous method detects vehicles robustly under four different environmental conditions which involve poor visibility conditions in snow and thick fog. Our previous method uses the windshield and its surroundings as the target of the Viola-Jones detector. Some experiments in winter show that the vehicle detection accuracy decreases because the temperatures of many windshields approximate those of the exterior of the windshields. In this paper, we propose a new vehicle detection method (henceforth referred to as “our new method”. Our new method detects vehicles based on tires’ thermal energy reflection. We have done experiments using three series of thermal images for which the vehicle detection accuracies of our previous method are low. Our new method detects 1,417 vehicles (92.8% out of 1,527 vehicles, and the number of false detection is 52 in total. Therefore, by combining our two methods, high vehicle detection accuracies are maintained under various environmental conditions. Finally, we apply the traffic information obtained by our two methods to traffic flow automatic monitoring, and show the effectiveness of our proposal.

  1. Robust vehicle detection even in poor visibility conditions using infrared thermal images and its application to road traffic flow monitoring

    Science.gov (United States)

    Iwasaki, Yoichiro; Kawata, Shinya; Nakamiya, Toshiyuki

    2011-08-01

    We propose an algorithm for detecting vehicle positions and their movements by using thermal images obtained through an infrared thermography camera. The infrared thermography camera offers high contrast images even in poor visibility conditions like snow and thick fog. The proposed algorithm specifies the area of moving vehicles based on the standard deviations of pixel values along the time direction of spatio-temporal images. It also specifies vehicle positions by applying the pattern recognition algorithm which uses Haar-like features per frame of the images. Moreover, to increase the accuracy of vehicle detection, correction procedures for misrecognition of vehicles are employed. The results of our experiments at three different temperatures show that the information about both vehicle positions and their movements can be obtained by combining those two kinds of detection, and the vehicle detection accuracy is 96.2%. Moreover, the proposed algorithm detects the vehicles robustly in the 222 continuous frames taken in poor visibility conditions like snow and thick fog. As an application of the algorithm, we also propose a method for estimating traffic flow conditions based on the results obtained by the algorithm. By using the method for estimating traffic flow conditions, automatic traffic flow monitoring can be achieved.

  2. Neural Network Control-Based Drive Design of Servomotor and Its Application to Automatic Guided Vehicle

    Directory of Open Access Journals (Sweden)

    Ming-Shyan Wang

    2015-01-01

    Full Text Available An automatic guided vehicle (AGV is extensively used for productions in a flexible manufacture system with high efficiency and high flexibility. A servomotor-based AGV is designed and implemented in this paper. In order to steer the AGV to go along a predefined path with corner or arc, the conventional proportional-integral-derivative (PID control is used in the system. However, it is difficult to tune PID gains at various conditions. As a result, the neural network (NN control is considered to assist the PID control for gain tuning. The experimental results are first provided to verify the correctness of the neural network plus PID control for 400 W-motor control system. Secondly, the AGV includes two sets of the designed motor systems and CAN BUS transmission so that it can move along the straight line and curve paths shown in the taped videos.

  3. FOUR-PARAMETER AUTOMATIC TRANSMISSION TECHNOLOGY FOR CONSTRUCTION VEHICLE BASED ON ELMAN RECURSIVE NEURAL NETWORK

    Institute of Scientific and Technical Information of China (English)

    ZHANG Hongyan; ZHAO Dingxuan; TANG Xinxing; Ding Chunfeng

    2008-01-01

    From the viewpoint of energy saving and improving transmission efficiency, the ZL50E wheel loader is taken as the study object. And the system model is analyzed based on the transmission system of the construction vehicle. A new four-parameter shift schedule is presented, which can keep the torque converter working in the high efficiency area. The control algorithm based on the Elman recursive neural network is applied, and four-parameter control system is developed which is based on industrial computer. The system is used to collect data accurately and control 4D180 power-shift gearbox of ZL50E wheel loader shift timely. An experiment is done on automatic transmission test-bed, and the result indicates that the control system could reliably and safely work and improve the efficiency of hydraulic torque converter. Four-parameter shift strategy that takes into account the power consuming of the working pump has important operating significance and reflects the actual working status of construction vehicle.

  4. A Novel OD Estimation Method Based on Automatic Vehicle Identification Data

    Science.gov (United States)

    Sun, Jian; Feng, Yu

    With the development and application of Automatic Vehicle Identification (AVI) technologies, a novel high resolution OD estimation method was proposed based on AVI detector information. 4 detected categories (Ox + Dy, Ox/Dy + Path(s), Ox/Dy, Path(s)) were divided at the first step. Then the initial OD matrix was updated using the Ox + Dy sample information considering the AVI detector errors. Referenced by particle filter, the link-path relationship data were revised using the last 3 categories information based on Bayesian inference and the possible trajectory and OD were determined using Monte Carlo random process at last. Finally, according to the current application of video detector in Shanghai, the North-South expressway was selected as the testbed which including 17 OD pairs and 9 AVI detectors. The results show that the calculated average relative error is 12.09% under the constraints that the simulation error is under 15% and the detector error is about 10%. It also shows that this method is highly efficient and can fully using the partial vehicle trajectory which can be satisfied with the dynamic traffic management application in reality.

  5. Study on dynamic optimization of the double railway suspended vehicle for automatic transportation in the welding shop

    Institute of Scientific and Technical Information of China (English)

    Huang Dawei; Gao Xiuhua; Xing Hao; Liu Hongxue; Han Yanhe

    2007-01-01

    The 2DOF dynamic equations of the double railway suspended vehicle for automatic transportation in the welding shop are established. The sensitivities are analyzed. The parameter design is researched in ADAMS in terms of the inner railway radius, wheelbase, gauge, girder length of the double railway suspended vehicle for automatic transportation in the welding product line. The mutual-restriction among the design variables is discussed and the selective ranges of the variables are confirmed. The result shows that the stability of the double railway suspended vehicle for automatic transportation in the welding product line depends on parameters of the inner railway radius, wheelbase, gauge, girder length. The optimal results of the optimal objective and design variables have research significance for the virtual prototype of the double suspension railway automation vehicle. The optimal results are input into the simulation model iteratively and the simulation results are fed back to the physical prototype. The veracity and reliability of performance forecast are improved so that the manufacture cost of the double suspension railway automation vehicle is reduced significantly.

  6. Feature Comparison in Structural Health Monitoring of a Vehicle Crane

    Directory of Open Access Journals (Sweden)

    J. Kullaa

    2008-01-01

    Full Text Available Vibration-based structural health monitoring of a vehicle crane was studied. The performance of different features to detect damage was investigated after eliminating the normal operational variations using factor analysis. Using eight accelerometers, ten AR parameters from each record were identified for damage detection. Also transmissibilities between sensors were estimated. Damage was introduced with additional masses at different locations of the structure. All damage cases could be detected from either features using control charts, but transmissibilities proved to be more sensitive to damage than the AR coefficients.

  7. Monitoring and Control of the Automated Transfer Vehicle

    Science.gov (United States)

    Hugonnet, C.; D'Hoine, S.

    The objective of this paper is to present succinctly the architecture of the heart of the ATV Control Centre: the Monitoring and Control developed by CS for the French Space Agency (CNES) and the European Space Agency (ESA). At the moment, the Monitoring and Control is in the development phase, a first real time version will be delivered to CNES in July 2003, then a second version will be delivered in October including off line capabilities. The following paper introduces the high level specifications and the main driving performance criteria of the monitoring and control system in order to successfully operate these complex ATV space vehicles from the first flight planned in 2004. It presents the approach taken by CS and CNES in order to meet this challenge in a very short time. ATV-CC Monitoring and Control system is based on the reuse of flight proven components that are integrated in a software bus based architecture. The paper particularly shows the advantages of using new computer technologies in operational system: use of Object Oriented technologies from specification, design (UML) to development (C++, Java, PLSQL), use of a CORBA Object Request Broker for the exchange of messages and some centralised services, use of Java for the development of an ergonomic and standardised (for all functions of the M&C) Graphical User Interface and the extensive use of XML for data exchanges.

  8. Unmanned Aerial Vehicles for Alien Plant Species Detection and Monitoring

    Science.gov (United States)

    Dvořák, P.; Müllerová, J.; Bartaloš, T.; Brůna, J.

    2015-08-01

    Invasive species spread rapidly and their eradication is difficult. New methods enabling fast and efficient monitoring are urgently needed for their successful control. Remote sensing can improve early detection of invading plants and make their management more efficient and less expensive. In an ongoing project in the Czech Republic, we aim at developing innovative methods of mapping invasive plant species (semi-automatic detection algorithms) by using purposely designed unmanned aircraft (UAV). We examine possibilities for detection of two tree and two herb invasive species. Our aim is to establish fast, repeatable and efficient computer-assisted method of timely monitoring, reducing the costs of extensive field campaigns. For finding the best detection algorithm we test various classification approaches (object-, pixel-based and hybrid). Thanks to its flexibility and low cost, UAV enables assessing the effect of phenological stage and spatial resolution, and is most suitable for monitoring the efficiency of eradication efforts. However, several challenges exist in UAV application, such as geometrical and radiometric distortions, high amount of data to be processed and legal constrains for the UAV flight missions over urban areas (often highly invaded). The newly proposed UAV approach shall serve invasive species researchers, management practitioners and policy makers.

  9. UNMANNED AERIAL VEHICLES FOR ALIEN PLANT SPECIES DETECTION AND MONITORING

    Directory of Open Access Journals (Sweden)

    P. Dvořák

    2015-08-01

    Full Text Available Invasive species spread rapidly and their eradication is difficult. New methods enabling fast and efficient monitoring are urgently needed for their successful control. Remote sensing can improve early detection of invading plants and make their management more efficient and less expensive. In an ongoing project in the Czech Republic, we aim at developing innovative methods of mapping invasive plant species (semi-automatic detection algorithms by using purposely designed unmanned aircraft (UAV. We examine possibilities for detection of two tree and two herb invasive species. Our aim is to establish fast, repeatable and efficient computer-assisted method of timely monitoring, reducing the costs of extensive field campaigns. For finding the best detection algorithm we test various classification approaches (object-, pixel-based and hybrid. Thanks to its flexibility and low cost, UAV enables assessing the effect of phenological stage and spatial resolution, and is most suitable for monitoring the efficiency of eradication efforts. However, several challenges exist in UAV application, such as geometrical and radiometric distortions, high amount of data to be processed and legal constrains for the UAV flight missions over urban areas (often highly invaded. The newly proposed UAV approach shall serve invasive species researchers, management practitioners and policy makers.

  10. [Ajax-based child growth monitoring chart automatic drawing].

    Science.gov (United States)

    Geng, Xingyun; Jiang, Kui

    2010-10-01

    As regards the application of community residents electronics health record system, there is a question of how to draw the child growth monitoring chart quickly and efficiently, which is also the focus of this research for enhancing residents experience in using the system. The system is combined with the current emerging Ajax and GDI+ technology. The client uses the pre-designed Ajax Manager status to deal with residents' request and send XMLHTTP request to the server. Sever responds to the request and makes use of GDI+ programming for implementation of rendering graphics and feedback. The system finally realizes child growth monitoring chart releasing on the Web.

  11. Multi-level Bayesian safety analysis with unprocessed Automatic Vehicle Identification data for an urban expressway.

    Science.gov (United States)

    Shi, Qi; Abdel-Aty, Mohamed; Yu, Rongjie

    2016-03-01

    In traffic safety studies, crash frequency modeling of total crashes is the cornerstone before proceeding to more detailed safety evaluation. The relationship between crash occurrence and factors such as traffic flow and roadway geometric characteristics has been extensively explored for a better understanding of crash mechanisms. In this study, a multi-level Bayesian framework has been developed in an effort to identify the crash contributing factors on an urban expressway in the Central Florida area. Two types of traffic data from the Automatic Vehicle Identification system, which are the processed data capped at speed limit and the unprocessed data retaining the original speed were incorporated in the analysis along with road geometric information. The model framework was proposed to account for the hierarchical data structure and the heterogeneity among the traffic and roadway geometric data. Multi-level and random parameters models were constructed and compared with the Negative Binomial model under the Bayesian inference framework. Results showed that the unprocessed traffic data was superior. Both multi-level models and random parameters models outperformed the Negative Binomial model and the models with random parameters achieved the best model fitting. The contributing factors identified imply that on the urban expressway lower speed and higher speed variation could significantly increase the crash likelihood. Other geometric factors were significant including auxiliary lanes and horizontal curvature.

  12. New Navigation System for Automatic Guided Vehicles Using an Ultrasonic Sensor Array

    Science.gov (United States)

    Tabata, Katsuhiko; Nishida, Yoshifumi; Iida, Yoshihiro; Iwai, Toshiaki

    We propose a new navigation system for Automatic Guided Vehicles (AGV) used as a carrier in the factory. The guided marker of the navigation system is composed of ultrasonic transducers instead of the traditional markers such as electromagnetic tape, light reflective tape and so on. The proposed system is available to be used not only indoors but also outdoors and adaptable to a temporary route. The ultrasonic sensor is generically susceptible to noise, so that we make the following propositions. First, a phased array of the ultrasonic sensors is employed in searching a land marker to improve the signal-to-noise ratio. Second, the specific ID with 7bits is assigned as the land marker to avoid the system errors ascribable to an ultrasonic interference. In addition, the proposed system is quite compact in virtue of the embedded technology of a microcomputer and Field Programmable Gate Array (FPGA). This paper reports the development of the proto-type system of navigation system and confirmation of its fundamental performances.

  13. Automatic Parameter Tuning for the Morpheus Vehicle Using Particle Swarm Optimization

    Science.gov (United States)

    Birge, B.

    2013-01-01

    A high fidelity simulation using a PC based Trick framework has been developed for Johnson Space Center's Morpheus test bed flight vehicle. There is an iterative development loop of refining and testing the hardware, refining the software, comparing the software simulation to hardware performance and adjusting either or both the hardware and the simulation to extract the best performance from the hardware as well as the most realistic representation of the hardware from the software. A Particle Swarm Optimization (PSO) based technique has been developed that increases speed and accuracy of the iterative development cycle. Parameters in software can be automatically tuned to make the simulation match real world subsystem data from test flights. Special considerations for scale, linearity, discontinuities, can be all but ignored with this technique, allowing fast turnaround both for simulation tune up to match hardware changes as well as during the test and validation phase to help identify hardware issues. Software models with insufficient control authority to match hardware test data can be immediately identified and using this technique requires very little to no specialized knowledge of optimization, freeing model developers to concentrate on spacecraft engineering. Integration of the PSO into the Morpheus development cycle will be discussed as well as a case study highlighting the tool's effectiveness.

  14. Improved Robustness and Efficiency for Automatic Visual Site Monitoring

    Science.gov (United States)

    2009-09-01

    and space utiliza- tion perspectives. In commercial settings, retail outlets are interested in monitoring shopper traffic patterns to understand the...penalized because it has such a broad and non-discriminating covariance matrix. This is a desirable regularization property be- cause the outlined online ...to emit it. The Gaussian is then updated with this pixel value using an exponential forgetting scheme that approximates an online k-means algorithm

  15. Monitoring the Performance of the Pedestrian Transfer Function of Train Stations Using Automatic Fare Collection Data

    NARCIS (Netherlands)

    Van den Heuvel, J.P.A.; Hoogenraad, J.H.

    2014-01-01

    Over the last years all train stations in The Netherlands have been equipped with automatic fare collection gates and/or validators. All public transport passengers use a smart card to pay their fare. In this paper we present a monitor for the performance of the pedestrian function of train stations

  16. Automatic Distance Monitoring System of Contact Connections in High Voltage Equipment of Electric Power Lines

    Directory of Open Access Journals (Sweden)

    M. Diachenko

    2013-01-01

    Full Text Available The developed automatic distance monitoring system of contact connections in high voltage equipment is based on technology of sensor circuits. The paper shows application of control methodology for contact connections in accordance with time rate of conductor temperature changes and contact connection and also direct measurement of transient resistance.

  17. Piloted Simulation Evaluation of a Model-Predictive Automatic Recovery System to Prevent Vehicle Loss of Control on Approach

    Science.gov (United States)

    Litt, Jonathan S.; Liu, Yuan; Sowers, Thomas S.; Owen, A. Karl; Guo, Ten-Huei

    2014-01-01

    This paper describes a model-predictive automatic recovery system for aircraft on the verge of a loss-of-control situation. The system determines when it must intervene to prevent an imminent accident, resulting from a poor approach. It estimates the altitude loss that would result from a go-around maneuver at the current flight condition. If the loss is projected to violate a minimum altitude threshold, the maneuver is automatically triggered. The system deactivates to allow landing once several criteria are met. Piloted flight simulator evaluation showed the system to provide effective envelope protection during extremely unsafe landing attempts. The results demonstrate how flight and propulsion control can be integrated to recover control of the vehicle automatically and prevent a potential catastrophe.

  18. Image structural analysis in the tasks of automatic navigation of unmanned vehicles and inspection of Earth surface

    Science.gov (United States)

    Lutsiv, Vadim; Malyshev, Igor

    2013-10-01

    The automatic analysis of images of terrain is urgent for several decades. On the one hand, such analysis is a base of automatic navigation of unmanned vehicles. On the other hand, the amount of information transferred to the Earth by modern video-sensors increases, thus a preliminary classification of such data by onboard computer becomes urgent. We developed an object-independent approach to structural analysis of images. While creating the methods of image structural description, we did our best to abstract away from the partial peculiarities of scenes. Only the most general limitations were taken into account, that were derived from the laws of organization of observable environment and from the properties of image formation systems. The practical application of this theoretic approach enables reliable matching the aerospace photographs acquired from differing aspect angles, in different day-time and seasons by sensors of differing types. The aerospace photographs can be matched even with the geographic maps. The developed approach enabled solving the tasks of automatic navigation of unmanned vehicles. The signs of changes and catastrophes can be detected by means of matching and comparison of aerospace photographs acquired at different time. We present the theoretical proofs of chosen strategy of structural description and matching of images. Several examples of matching of acquired images with template pictures and maps of terrain are shown within the frameworks of navigation of unmanned vehicles or detection of signs of disasters.

  19. THE APPLICATION OF RTK-GPS AND STEER-BY-WIRE TECHNOLOGY TO THE AUTOMATIC DRIVING OF VEHICLES AND AN EVALUATION OF DRIVER BEHAVIOR

    Directory of Open Access Journals (Sweden)

    Manabu OMAE

    2006-01-01

    Full Text Available Automatic vehicle driving has long been the subject of research efforts designed to improve the safety and efficiency of automobile transportation. In recent years, increasingly sophisticated sensors and automobiles have brought automatic driving systems closer to reality. In this paper we describe an attempt to apply real-time kinematic GPS (RTK-GPS, a highly precise positioning system, and steer-by-wire body technology, which has advanced greatly in recent years, to automatic driving. In addition, we also describe the results of research into human factors related to automatic driving, which will become more and more important as automatic driving is put to practical use.

  20. Automatic identification of agricultural terraces through object-oriented analysis of very high resolution DSMs and multispectral imagery obtained from an unmanned aerial vehicle.

    Science.gov (United States)

    Diaz-Varela, R A; Zarco-Tejada, P J; Angileri, V; Loudjani, P

    2014-02-15

    Agricultural terraces are features that provide a number of ecosystem services. As a result, their maintenance is supported by measures established by the European Common Agricultural Policy (CAP). In the framework of CAP implementation and monitoring, there is a current and future need for the development of robust, repeatable and cost-effective methodologies for the automatic identification and monitoring of these features at farm scale. This is a complex task, particularly when terraces are associated to complex vegetation cover patterns, as happens with permanent crops (e.g. olive trees). In this study we present a novel methodology for automatic and cost-efficient identification of terraces using only imagery from commercial off-the-shelf (COTS) cameras on board unmanned aerial vehicles (UAVs). Using state-of-the-art computer vision techniques, we generated orthoimagery and digital surface models (DSMs) at 11 cm spatial resolution with low user intervention. In a second stage, these data were used to identify terraces using a multi-scale object-oriented classification method. Results show the potential of this method even in highly complex agricultural areas, both regarding DSM reconstruction and image classification. The UAV-derived DSM had a root mean square error (RMSE) lower than 0.5 m when the height of the terraces was assessed against field GPS data. The subsequent automated terrace classification yielded an overall accuracy of 90% based exclusively on spectral and elevation data derived from the UAV imagery.

  1. Vision system for driving control using camera mounted on an automatic vehicle. Jiritsu sokosha no camera ni yoru shikaku system

    Energy Technology Data Exchange (ETDEWEB)

    Nishimori, K.; Ishihara, K.; Tokutaka, H.; Kishida, S.; Fujimura, K. (Tottori University, Tottori (Japan). Faculty of Engineering); Okada, M. (Mazda Corp., Hiroshima (Japan)); Hirakawa, S. (Fujitsu Corp., Tokyo (Japan))

    1993-11-30

    The present report explains a vision system, in which a CCD camera, used for the model vehicle automatically traveling by fuzzy control, is used as a vision sensor. The vision system is composed of input image processing module, situation recognition/analysis module to three-dimensionally recover the road, route-selecting navigation module to avoid the obstacle and vehicle control module. The CCD camera is used as a vision sensor to make the model vehicle automatically travel by fuzzy control with the above modules. In the present research, the traveling is controlled by treating the position and configuration of objective in image as a fuzzy inferential variable. Based on the above method, the traveling simulation gave the following knowledge: even with the image information only from the vision system, the application of fuzzy control facilitates the traveling. If the objective is clearly known, the control is judged able to be made even from vague image which does not necessitate the exact locative information. 4 refs., 11 figs.

  2. Automatic diet monitoring: a review of computer vision and wearable sensor-based methods.

    Science.gov (United States)

    Hassannejad, Hamid; Matrella, Guido; Ciampolini, Paolo; De Munari, Ilaria; Mordonini, Monica; Cagnoni, Stefano

    2017-01-31

    Food intake and eating habits have a significant impact on people's health. Widespread diseases, such as diabetes and obesity, are directly related to eating habits. Therefore, monitoring diet can be a substantial base for developing methods and services to promote healthy lifestyle and improve personal and national health economy. Studies have demonstrated that manual reporting of food intake is inaccurate and often impractical. Thus, several methods have been proposed to automate the process. This article reviews the most relevant and recent researches on automatic diet monitoring, discussing their strengths and weaknesses. In particular, the article reviews two approaches to this problem, accounting for most of the work in the area. The first approach is based on image analysis and aims at extracting information about food content automatically from food images. The second one relies on wearable sensors and has the detection of eating behaviours as its main goal.

  3. Automatic and Intelligent Power Quality Disturbances Monitoring Based on Multi-Agent Systems

    Directory of Open Access Journals (Sweden)

    M. Hajian

    2012-09-01

    Full Text Available Power quality monitoring is the first step in the identification of power quality disturbances and reducing them in order to improve the performance of the power system. The aim of this paper is to propose the architecture of a new intelligent strategy for online and offline power quality monitoring system based on multi-agent systems. In this study, a multi-agent system for solving some problems in power quality monitoring, including computational complexity, low accuracy, change in the data pattern, non adaptive structure of detection system to changing conditions is proposed. In the proposed strategy, the agent characteristics, such as automatic and dynamic performance, intelligent, learning, reasoning ability, objectively and interoperability of agents are used. This paper is presented in two stages. In the one stage, to indicate problems in power quality monitoring, different methods of feature extraction, feature selection and classification for automatic recognition of power quality disturbances have been analyzed. Optimal selection of input feature vector of distinguish system is applied using different methods of data mining. Also, three well-known classifiers are considered. In another stage of the paper, to solve some challenges, the design of investigated structures in the form of a multi-agent system is expressed. The results of the experiments in this paper demonstrate the superiority of agents and multi-agent systems for online and offline power quality monitoring.

  4. Investigation of Matlab® as platform in navigation and control of an Automatic Guided Vehicle utilising an omnivision sensor.

    Science.gov (United States)

    Kotze, Ben; Jordaan, Gerrit

    2014-08-25

    Automatic Guided Vehicles (AGVs) are navigated utilising multiple types of sensors for detecting the environment. In this investigation such sensors are replaced and/or minimized by the use of a single omnidirectional camera picture stream. An area of interest is extracted, and by using image processing the vehicle is navigated on a set path. Reconfigurability is added to the route layout by signs incorporated in the navigation process. The result is the possible manipulation of a number of AGVs, each on its own designated colour-signed path. This route is reconfigurable by the operator with no programming alteration or intervention. A low resolution camera and a Matlab® software development platform are utilised. The use of Matlab® lends itself to speedy evaluation and implementation of image processing options on the AGV, but its functioning in such an environment needs to be assessed.

  5. Investigation of Matlab® as Platform in Navigation and Control of an Automatic Guided Vehicle Utilising an Omnivision Sensor

    Directory of Open Access Journals (Sweden)

    Ben Kotze

    2014-08-01

    Full Text Available Automatic Guided Vehicles (AGVs are navigated utilising multiple types of sensors for detecting the environment. In this investigation such sensors are replaced and/or minimized by the use of a single omnidirectional camera picture stream. An area of interest is extracted, and by using image processing the vehicle is navigated on a set path. Reconfigurability is added to the route layout by signs incorporated in the navigation process. The result is the possible manipulation of a number of AGVs, each on its own designated colour-signed path. This route is reconfigurable by the operator with no programming alteration or intervention. A low resolution camera and a Matlab® software development platform are utilised. The use of Matlab® lends itself to speedy evaluation and implementation of image processing options on the AGV, but its functioning in such an environment needs to be assessed.

  6. Towards the Automatic Classification of Avian Flight Calls for Bioacoustic Monitoring

    Science.gov (United States)

    Bello, Juan Pablo; Farnsworth, Andrew; Robbins, Matt; Keen, Sara; Klinck, Holger; Kelling, Steve

    2016-01-01

    Automatic classification of animal vocalizations has great potential to enhance the monitoring of species movements and behaviors. This is particularly true for monitoring nocturnal bird migration, where automated classification of migrants’ flight calls could yield new biological insights and conservation applications for birds that vocalize during migration. In this paper we investigate the automatic classification of bird species from flight calls, and in particular the relationship between two different problem formulations commonly found in the literature: classifying a short clip containing one of a fixed set of known species (N-class problem) and the continuous monitoring problem, the latter of which is relevant to migration monitoring. We implemented a state-of-the-art audio classification model based on unsupervised feature learning and evaluated it on three novel datasets, one for studying the N-class problem including over 5000 flight calls from 43 different species, and two realistic datasets for studying the monitoring scenario comprising hundreds of thousands of audio clips that were compiled by means of remote acoustic sensors deployed in the field during two migration seasons. We show that the model achieves high accuracy when classifying a clip to one of N known species, even for a large number of species. In contrast, the model does not perform as well in the continuous monitoring case. Through a detailed error analysis (that included full expert review of false positives and negatives) we show the model is confounded by varying background noise conditions and previously unseen vocalizations. We also show that the model needs to be parameterized and benchmarked differently for the continuous monitoring scenario. Finally, we show that despite the reduced performance, given the right conditions the model can still characterize the migration pattern of a specific species. The paper concludes with directions for future research. PMID:27880836

  7. Behaviour recognition of ground vehicle using airborne monitoring of unmanned aerial vehicles

    Science.gov (United States)

    Oh, Hyondong; Kim, Seungkeun; Shin, Hyo-Sang; Tsourdos, Antonios; White, Brian A.

    2014-12-01

    This paper proposes a behaviour recognition methodology for ground vehicles moving within road traffic using unmanned aerial vehicles in order to identify suspicious or abnormal behaviour. With the target information acquired by unmanned aerial vehicles and estimated by filtering techniques, ground vehicle behaviour is first classified into representative driving modes, and then a string pattern matching theory is applied to detect suspicious behaviours in the driving mode history. Furthermore, a fuzzy decision-making process is developed to systematically exploit all available information obtained from a complex environment and confirm the characteristic of behaviour, while considering spatiotemporal environment factors as well as several aspects of behaviours. To verify the feasibility and benefits of the proposed approach, numerical simulations on moving ground vehicles are performed using realistic car trajectory data from an off-the-shelf traffic simulation software.

  8. Using Unmanned Aerial Vehicles for monitoring glacial moulins

    Science.gov (United States)

    Santagata, Tommaso

    2016-04-01

    The exploration of cavities on glaciers has always represented a fascinating activity that attracts scientists and researchers since many decades. Several explorations performed by speleologists and scientists since 1985 on the Gorner Gletscher (Mount Rosa group, SW Switzerland) have allowed to survey more than 40 endoglacial caves and some marginal tunnels of this glacier, which is the most interesting in the Alps for its supraglacial and englacial pseudo-karst forms. In recent years, the study of these caves has led to the distinction of two morphological and genetic types: marginal tunnels, that generally forms at the contact between ice and lateral moraine, and swallow holes (moulins) which are vertical shafts where a supraglacial stream sinks into the ice. During the first International glacier-caving camp organized in October 2014 as part of the project "Inside the glaciers" which had the main objective to explore the cavities of this glacier and to study the cryo-karstic processes that lead to the formation of deep shafts, an unmanned aerial vehicle (UAV) equipped with camera and GPS system was used for the first time to perform photogrammetric surveys on three different areas. This technique allowed to derive detailed 3D models with very high resolution and accuracy of the entrance of the main moulins and other interesting parts of this glacier. Thanks to the acquisition of geo-referenced images and post-processing the acquired data (i.e. motion corrections), with the realized 3D point clouds and mesh models it was possible to obtain geo-referenced ortophoto and digital surface models which have been used to calculate contour lines and calculate the difference of position of the same moulins detected during the last years expeditions. Moreover, the data acquired have allowed to perform other different type of surface analysis and obtain an excellent photographic database that will surely be useful for further comparisons in future, proving the importance of

  9. Parameter design and performance analysis of shift actuator for a two-speed automatic mechanical transmission for pure electric vehicles

    Directory of Open Access Journals (Sweden)

    Jianjun Hu

    2016-08-01

    Full Text Available Recent developments of pure electric vehicles have shown that pure electric vehicles equipped with two-speed or multi-speed gearbox possess higher energy efficiency by ensuring the drive motor operates at its peak performance range. This article presents the design, analysis, and control of a two-speed automatic mechanical transmission for pure electric vehicles. The shift actuator is based on a motor-controlled camshaft where a special geometric groove is machined, and the camshaft realizes the axial positions of the synchronizer sleeve for gear engaging, disengaging, and speed control of the drive motor. Based on the force analysis of shift process, the parameters of shift actuator and shift motor are designed. The drive motor’s torque control strategy before shifting, speed governing control strategy before engaging, shift actuator’s control strategy during gear engaging, and drive motor’s torque recovery strategy after shift process are proposed and implemented with a prototype. To validate the performance of the two-speed gearbox, a test bed was developed based on dSPACE that emulates various operation conditions. The experimental results indicate that the shift process with the proposed shift actuator and control strategy could be accomplished within 1 s under various operation conditions, with shift smoothness up to passenger car standard.

  10. Sleep-monitoring, experiment M133. [electronic recording system for automatic analysis of human sleep patterns

    Science.gov (United States)

    Frost, J. D., Jr.; Salamy, J. G.

    1973-01-01

    The Skylab sleep-monitoring experiment simulated the timelines and environment expected during a 56-day Skylab mission. Two crewmembers utilized the data acquisition and analysis hardware, and their sleep characteristics were studied in an online fashion during a number of all night recording sessions. Comparison of the results of online automatic analysis with those of postmission visual data analysis was favorable, confirming the feasibility of obtaining reliable objective information concerning sleep characteristics during the Skylab missions. One crewmember exhibited definite changes in certain sleep characteristics (e.g., increased sleep latency, increased time Awake during first third of night, and decreased total sleep time) during the mission.

  11. FishCam - A semi-automatic video-based monitoring system of fish migration

    Science.gov (United States)

    Kratzert, Frederik; Mader, Helmut

    2016-04-01

    One of the main objectives of the Water Framework Directive is to preserve and restore the continuum of river networks. Regarding vertebrate migration, fish passes are widely used measure to overcome anthropogenic constructions. Functionality of this measure needs to be verified by monitoring. In this study we propose a newly developed monitoring system, named FishCam, to observe fish migration especially in fish passes without contact and without imposing stress on fish. To avoid time and cost consuming field work for fish pass monitoring, this project aims to develop a semi-automatic monitoring system that enables a continuous observation of fish migration. The system consists of a detection tunnel and a high resolution camera, which is mainly based on the technology of security cameras. If changes in the image, e.g. by migrating fish or drifting particles, are detected by a motion sensor, the camera system starts recording and continues until no further motion is detectable. An ongoing key challenge in this project is the development of robust software, which counts, measures and classifies the passing fish. To achieve this goal, many different computer vision tasks and classification steps have to be combined. Moving objects have to be detected and separated from the static part of the image, objects have to be tracked throughout the entire video and fish have to be separated from non-fish objects (e.g. foliage and woody debris, shadows and light reflections). Subsequently, the length of all detected fish needs to be determined and fish should be classified into species. The object classification in fish and non-fish objects is realized through ensembles of state-of-the-art classifiers on a single image per object. The choice of the best image for classification is implemented through a newly developed "fish benchmark" value. This value compares the actual shape of the object with a schematic model of side-specific fish. To enable an automatization of the

  12. Design and construction of an automatic system for minimizing the risk of sinking of water vehicle

    Science.gov (United States)

    Sutradhar, Amit; Rashid, Md. Mahbubur; Helal-An-Nahiyan, Md.; Mandal, Manash Kumar

    2016-07-01

    This paper focuses on the reduction of the risk of water vehicle like launch, ferry, ship and boat from sinking which is a burning problem of Bangladesh now-a-days. Every year death toll is rising by leaps and bounds due to this unexpected phenomenon. The sinking mostly occurs due to overloading and lack of consciousness. That's why, an automated system is introduced here to make the travelers warned about the overloading situation through raising alarm before the vehicle starts to move on. The tolerance limit of the vehicle is determined based on the theory of buoyancy and floatation. Moreover, while moving on the water, the vehicle may get victim of sinking due to rough weather, low visibility or machineries breakdown. So water level indicator is used to determine the safe level of water. When water level rises up to the safe limit or just before crossing the safe limit, another alarm will warn the passengers which will sound quite different from the first alarm as stated before. And at once the on board GPS sensor will record the current position of the vehicle and transmit the location to the nearest rescue authority via GSM module in the form of text message which will help them to take necessary steps for the rescue of the passengers as soon as possible. Effective implementation of this method can reduce the accident as well as this research can also be a helpful tool to organize further researches in this field for the sake of humanity.

  13. 基于RFID的车辆自动化智能管理系统研究%Research of vehicle automatic management system based on RFID

    Institute of Scientific and Technical Information of China (English)

    张丽然; 沈胜利

    2012-01-01

    In order to solve the current residential parking problem,the residential vehicle automatic management system is designed based on ETC technology. With the analysis of the actual demand, the system includes three parts: vehicle out and in management, vehicle positioning management and vehicle parking management. The vehicle out and in management system could identify and confirm the vehicles going into the community automatically; vehicle positioning management system is responsible for tracking and positioning the vehicle in the community; vehicle parking management system would assign and unlock the parking space for the vehicle automatically. After practices, it proves that the system has good performance and practical value.%基于解决当前小区停车难问题的目的,采用ETC电子不停车收费相关技术,设计了小区车辆自动化管理系统;通过对实际需求的分析,所设计的系统主要包括3个部分:车辆出入管理、定位管理以及停车管理。其中,车辆出入管理系统对进入的车辆进行身份的自动识别和确认;车辆定位管理系统负责对在小区申行驶的车辆进行追踪定位;车辆停车管理系统则为进入的车辆自动分配车住和开启车位锁。经过实践的证明,本系统性能良好,具有较好的实用价值。

  14. Autonomous monitoring of control hardware to predict off-normal conditions using NIF automatic alignment systems

    Energy Technology Data Exchange (ETDEWEB)

    Awwal, Abdul A.S., E-mail: awwal1@llnl.gov [Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States); Wilhelmsen, Karl; Leach, Richard R.; Miller-Kamm, Vicki; Burkhart, Scott; Lowe-Webb, Roger; Cohen, Simon [Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States)

    2012-12-15

    Highlights: Black-Right-Pointing-Pointer An automatic alignment system was developed to process images of the laser beams. Black-Right-Pointing-Pointer System uses processing to adjust a series of control loops until alignment criteria are satisfied. Black-Right-Pointing-Pointer Monitored conditions are compared against nominal values with an off-normal alert. Black-Right-Pointing-Pointer Automated health monitoring system trends off-normals with a large image history. - Abstract: The National Ignition Facility (NIF) is a high power laser system capable of supporting high-energy-density experimentation as a user facility for the next 30 years. In order to maximize the facility availability, preventive maintenance enhancements are being introduced into the system. An example of such an enhancement is a camera-based health monitoring system, integrated into the automated alignment system, which provides an opportunity to monitor trends in measurements such as average beam intensity, size of the beam, and pixel saturation. The monitoring system will generate alerts based on observed trends in measurements to allow scheduled pro-active maintenance before routine off-normal detection stops system operations requiring unscheduled intervention.

  15. Monitor automatic gauge control strategy with a Smith predictor for steel strip rolling

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    The simplified transfer function diagram block for a monitor automatic gauge control (Mon-AGC) system of strip steel rolling process was investigated.The new notion of strip sample length was given.In this way,the delay time varying with the rolling speed was evaded.After a Smith predictor was used to monitor the AGC system,the control laws were deduced for both proportional and integral regulators.The control strategies showed that by choosing the controller parameter P=∞ for both control algorithms each regulator could compensate the whole strip gage error in the first control step.The result shows that the integral algorithm is more controllable for the system regulating process and has a better steady-state precision than the proportional regulator.Compared with the traditional control strategy,the new control laws have a faster response speed and a higher steady-state precision.

  16. Using Probe Vehicle Data for Automatic Extraction of Road Traffic Parameters

    Directory of Open Access Journals (Sweden)

    Roman Popescu Maria Alexandra

    2016-12-01

    Full Text Available Through this paper the author aims to study and find solutions for automatic detection of traffic light position and for automatic calculation of the waiting time at traffic light. The first objective serves mainly the road transportation field, mainly because it removes the need for collaboration with local authorities to establish a national network of traffic lights. The second objective is important not only for companies which are providing navigation solutions, but especially for authorities, institutions, companies operating in road traffic management systems. Real-time dynamic determination of traffic queue length and of waiting time at traffic lights allow the creation of dynamic systems, intelligent and flexible, adapted to actual traffic conditions, and not to generic, theoretical models. Thus, cities can approach the Smart City concept by boosting, efficienting and greening the road transport, promoted in Europe through the Horizon 2020, Smart Cities, Urban Mobility initiative.

  17. Driver head displacement during (automatic) vehicle braking tests with varying levels of distraction

    NARCIS (Netherlands)

    Rooij, L. van; Pauwelussen, J.; Camp, O.M.G.C. op den; Janssen, J.M.

    2013-01-01

    Vehicle occupant behavior in emergency driving conditions has a large effect on traffic safety. Distraction is estimated to be the cause of 15-20% of all crashes. Additionally, the posture of the occupants prior to the possibly unavoidable crash is known to have a large effect on the injury reducing

  18. A novel automatic method for monitoring Tourette motor tics through a wearable device.

    Science.gov (United States)

    Bernabei, Michel; Preatoni, Ezio; Mendez, Martin; Piccini, Luca; Porta, Mauro; Andreoni, Giuseppe

    2010-09-15

    The aim of this study was to propose a novel automatic method for quantifying motor-tics caused by the Tourette Syndrome (TS). In this preliminary report, the feasibility of the monitoring process was tested over a series of standard clinical trials in a population of 12 subjects affected by TS. A wearable instrument with an embedded three-axial accelerometer was used to detect and classify motor tics during standing and walking activities. An algorithm was devised to analyze acceleration data by: eliminating noise; detecting peaks connected to pathological events; and classifying intensity and frequency of motor tics into quantitative scores. These indexes were compared with the video-based ones provided by expert clinicians, which were taken as the gold-standard. Sensitivity, specificity, and accuracy of tic detection were estimated, and an agreement analysis was performed through the least square regression and the Bland-Altman test. The tic recognition algorithm showed sensitivity = 80.8% ± 8.5% (mean ± SD), specificity = 75.8% ± 17.3%, and accuracy = 80.5% ± 12.2%. The agreement study showed that automatic detection tended to overestimate the number of tics occurred. Although, it appeared this may be a systematic error due to the different recognition principles of the wearable and video-based systems. Furthermore, there was substantial concurrency with the gold-standard in estimating the severity indexes. The proposed methodology gave promising performances in terms of automatic motor-tics detection and classification in a standard clinical context. The system may provide physicians with a quantitative aid for TS assessment. Further developments will focus on the extension of its application to everyday long-term monitoring out of clinical environments.

  19. Data mining spacecraft telemetry: towards generic solutions to automatic health monitoring and status characterisation

    Science.gov (United States)

    Royer, P.; De Ridder, J.; Vandenbussche, B.; Regibo, S.; Huygen, R.; De Meester, W.; Evans, D. J.; Martinez, J.; Korte-Stapff, M.

    2016-07-01

    We present the first results of a study aimed at finding new and efficient ways to automatically process spacecraft telemetry for automatic health monitoring. The goal is to reduce the load on the flight control team while extending the "checkability" to the entire telemetry database, and provide efficient, robust and more accurate detection of anomalies in near real time. We present a set of effective methods to (a) detect outliers in the telemetry or in its statistical properties, (b) uncover and visualise special properties of the telemetry and (c) detect new behavior. Our results are structured around two main families of solutions. For parameters visiting a restricted set of signal values, i.e. all status parameters and about one third of all the others, we focus on a transition analysis, exploiting properties of Poincare plots. For parameters with an arbitrarily high number of possible signal values, we describe the statistical properties of the signal via its Kernel Density Estimate. We demonstrate that this allows for a generic and dynamic approach of the soft-limit definition. Thanks to a much more accurate description of the signal and of its time evolution, we are more sensitive and more responsive to outliers than the traditional checks against hard limits. Our methods were validated on two years of Venus Express telemetry. They are generic for assisting in health monitoring of any complex system with large amounts of diagnostic sensor data. Not only spacecraft systems but also present-day astronomical observatories can benefit from them.

  20. Video-based respiration monitoring with automatic region of interest detection.

    Science.gov (United States)

    Janssen, Rik; Wang, Wenjin; Moço, Andreia; de Haan, Gerard

    2016-01-01

    Vital signs monitoring is ubiquitous in clinical environments and emerging in home-based healthcare applications. Still, since current monitoring methods require uncomfortable sensors, respiration rate remains the least measured vital sign. In this paper, we propose a video-based respiration monitoring method that automatically detects a respiratory region of interest (RoI) and signal using a camera. Based on the observation that respiration induced chest/abdomen motion is an independent motion system in a video, our basic idea is to exploit the intrinsic properties of respiration to find the respiratory RoI and extract the respiratory signal via motion factorization. We created a benchmark dataset containing 148 video sequences obtained on adults under challenging conditions and also neonates in the neonatal intensive care unit (NICU). The measurements obtained by the proposed video respiration monitoring (VRM) method are not significantly different from the reference methods (guided breathing or contact-based ECG; p-value  =  0.6), and explain more than 99% of the variance of the reference values with low limits of agreement (-2.67 to 2.81 bpm). VRM seems to provide a valid solution to ECG in confined motion scenarios, though precision may be reduced for neonates. More studies are needed to validate VRM under challenging recording conditions, including upper-body motion types.

  1. Development of AN Open-Source Automatic Deformation Monitoring System for Geodetical and Geotechnical Measurements

    Science.gov (United States)

    Engel, P.; Schweimler, B.

    2016-04-01

    The deformation monitoring of structures and buildings is an important task field of modern engineering surveying, ensuring the standing and reliability of supervised objects over a long period. Several commercial hardware and software solutions for the realization of such monitoring measurements are available on the market. In addition to them, a research team at the Neubrandenburg University of Applied Sciences (NUAS) is actively developing a software package for monitoring purposes in geodesy and geotechnics, which is distributed under an open source licence and free of charge. The task of managing an open source project is well-known in computer science, but it is fairly new in a geodetic context. This paper contributes to that issue by detailing applications, frameworks, and interfaces for the design and implementation of open hardware and software solutions for sensor control, sensor networks, and data management in automatic deformation monitoring. It will be discussed how the development effort of networked applications can be reduced by using free programming tools, cloud computing technologies, and rapid prototyping methods.

  2. Automatic Registration of Wide Area Motion Imagery to Vector Road Maps by Exploiting Vehicle Detections.

    Science.gov (United States)

    Elliethy, Ahmed; Sharma, Gaurav

    2016-11-01

    To enrich large-scale visual analytics applications enabled by aerial wide area motion imagery (WAMI), we propose a novel methodology for accurately registering a geo-referenced vector roadmap to WAMI by using the locations of detected vehicles and determining a parametric transform that aligns these locations with the network of roads in the roadmap. Specifically, the problem is formulated in a probabilistic framework, explicitly allowing for spurious detections that do not correspond to on-road vehicles. The registration is estimated via the expectation-maximization (EM) algorithm as the planar homography that minimizes the sum of weighted squared distances between the homography-mapped detection locations and the corresponding closest point on the road network, where the weights are estimated posterior probabilities of detections being on-road vehicles. The weighted distance minimization is efficiently performed using the distance transform with the Levenberg-Marquardt nonlinear least-squares minimization procedure, and the fraction of spurious detections is estimated within the EM framework. The proposed method effectively sidesteps the challenges of feature correspondence estimation, applies directly to different imaging modalities, is robust to spurious detections, and is also more appropriate than feature matching for a planar homography. Results over three WAMI data sets captured by both visual and infrared sensors indicate the effectiveness of the proposed methodology: both visual comparison and numerical metrics for the registration accuracy are significantly better for the proposed method as compared with the existing alternatives.

  3. Automatic braking system modification for the Advanced Transport Operating Systems (ATOPS) Transportation Systems Research Vehicle (TSRV)

    Science.gov (United States)

    Coogan, J. J.

    1986-01-01

    Modifications were designed for the B-737-100 Research Aircraft autobrake system hardware of the Advanced Transport Operating Systems (ATOPS) Program at Langley Research Center. These modifications will allow the on-board flight control computer to control the aircraft deceleration after landing to a continuously variable level for the purpose of executing automatic high speed turn-offs from the runway. A bread board version of the proposed modifications was built and tested in simulated stopping conditions. Test results, for various aircraft weights, turnoff speed, winds, and runway conditions show that the turnoff speeds are achieved generally with errors less than 1 ft/sec.

  4. Study of automatic and manual terminal guidance and control systems for space shuttle vehicles. Volume 1: Sections 1 through 3

    Science.gov (United States)

    Osder, S.; Keller, R.

    1971-01-01

    The results of a study to analyze, design, and evaluate guidance and control systems are presented that start at an altitude of about 100,000 feet and bring the unpowered space shuttle orbiters to a precision horizontal landing. The systems under consideration included fully automatic versions which involve no pilot participation as well as various manual configurations that provide combinations of displays and control augmentation which permit the pilot to control the vehicle to a successful landing. Two classes of vehicles were studied: the low cross range or straight-wing orbiter and the high cross range or delta-wing (delta body) orbiter. The recommended navigation, guidance and control system is shown to be compatible with realistic physical constraints that would exist in space shuttlecraft and to be consistent with the 1971 avionics equipment state of the art. Aircraft capable of aerodynamically simulating the various candidate space shuttlecraft in their unpowered, terminal area descent were investigated, and flight test recommendations, including system mechanizations, are made.

  5. 汽车自动行驶装置设计%Design of vehicle automatic driving device

    Institute of Scientific and Technical Information of China (English)

    吴小邦

    2012-01-01

    The control of fire engines automatically traveling, mainly related to the key technologies of the steering, gear, brake and clutch control,its organization has used the machinery integration type or the air operated integration types of control,may be installed near the gear shift box in the vehicle and the bottom of the cab outside the narrow space. Use fire engine gas source and apply the pneumatic control localization,can be easy debugging and maintenance-free. Use single-power control solenoid valve, can be done for vehicles when it meet unexpected power outages,the every cylinder can be back to its original position.%对消防车自动行驶的控制,主要涉及转向、排挡、刹车和离合器控制等关键技术,其机构均采用机械集成式或气动集成控制形式,可安装在车辆的换挡箱附近、驾驶室外底部狭小空间;利用消防车的气源,应用气动控制定位,使调试更加方便、免维护;采用单电控电磁阀能确保在车辆意外断电时各气缸回复至原位.

  6. Detectability Analysis of Road Vehicles in Radarsat-2 Fully Polarimetric SAR Images for Traffic Monitoring

    Directory of Open Access Journals (Sweden)

    Bo Zhang

    2017-02-01

    Full Text Available By acquiring information over a wide area regardless of weather conditions and solar illumination, space-borne Synthetic Aperture Radar (SAR has the potential to be a promising application for traffic monitoring. However, the backscatter character of a vehicle in a SAR image is unstable and varies with image parameters, such as aspect and incidence angle. To investigate vehicle detectability in SAR images for traffic monitoring applications, images of four common types of vehicles in China were acquired using the fully polarimetric (FP SAR of Radarsat-2 in our experiments. Methods for measuring a vehicle’s aspect angle and backscatter intensity are introduced. The experimental FP SAR images are used to analyze the detectability, which is affected by factors such as vehicle size, vehicle shape, and aspect angle. Moreover, a new metric to improve vehicle detectability in FP SAR images is proposed and compared with the well-known intensity metric. The experimental results show that shape is a crucial factor in affecting the backscatter intensity of vehicles, which also oscillates with varying aspect angle. If the size of a vehicle is smaller than the SAR image resolution, using the intensity metric would result in low detectability. However, it could be improved in an FP SAR image by using the proposed metric. Compared with the intensity metric, the overall detectability is improved from 72% to 90% in our experiments. Therefore, this study indicates that FP SAR images have the ability to detect stationary vehicles on the road and are meaningful for traffic monitoring.

  7. 胶轮车监控系统在煤矿井下车辆运输管理中的应用%Application of Monitoring and Control System of Rubber-tyred Vehicle in Underground Vehicle Transportation Management

    Institute of Scientific and Technical Information of China (English)

    王瑞峰

    2012-01-01

    介绍了胶轮车监控系统的组成及工作原理;以车辆通过两个避车硐室之间的单向区间为例说明了系统的调度控制方式;结合系统在高河煤矿的应用情况,提出了实际应用中需注意的几个问题.该系统以调度控制分站为控制核心,实现了对井下胶轮车的实时监控和自动调度功能,提高了车辆运输管理效率.%The paper introduced composition and working principle of monitoring and control system of rubber-tyred vehicle, described scheduling control mode of the system by example of a vehicle passing an one-way interval between two refuge chambers, and proposed several issues needing paying attention to in actual application combining with the application in Gaohe Coal Mine. The system takes scheduling control sub-station as control core, and realizes functions of real-time monitoring and automatic schedulling of underground rubble-tyred vehicle, so as to improve efficiency of vehicle transportation management.

  8. Reduction of Doppler effect for the needs of wayside condition monitoring system of railway vehicles

    Science.gov (United States)

    Dybała, Jacek; Radkowski, Stanisław

    2013-07-01

    Technology of acoustic condition monitoring of vehicles in motion is based on the assumption that diagnostically relevant information is stored in the acoustic signal generated by a passing vehicle. Analyzing the possibilities of increasing the effectiveness of condition monitoring of a passing vehicle with stationary microphones, it should be noted that the acoustic signal recorded in these conditions is disturbed with the disturbance resulting from the Doppler effect. Reduction of signal's frequential structure disturbance resulting from the Doppler effect allows efficient analysis of changes in frequential structure of recorded signals and as a result extraction of relevant diagnostic information related with technical condition of running gear of vehicle. This article presents a method for removal of signal's frequential structure disturbances related with relative move of vehicles and stationary monitoring station. For elimination of the frequential non-stationary of signals disturbance-oriented dynamic signal resampling method was used. The paper provides a test of two methods for defining the time course of local disturbance of signal's frequential structure: the method based on the Hilbert transform and the method of analytical description of signal's disturbance based on the knowledge of a phenomenon that causes frequential non-stationarity of signals. As an example, the results of the processing and analysis of acoustic signals recorded by wayside measuring station, during the passage of WM-15A railway vehicle on an experimental track of Polish Railway Institute, are presented.

  9. A new PC based semi-automatic TLD badge reader system for personnel monitoring

    Energy Technology Data Exchange (ETDEWEB)

    Kulkarni, M.S.; Pradeep, Ratna; Kannan, S. [Radiation Protection and Instrumentation Section, Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai (India)

    2000-05-01

    A semi-automatic TDL (thermo-luminescence dosimeter) badge reader system has been developed for large-scale personnel monitoring of the radiation workers. The BARC (Bhabha Atomic Research Centre) TLD badge consists of three dosimeters of CaSO{sub 4}: Dy embedded in Teflon, each of 0.8mm/0.4mm thickness and 13mm diameter. 50 such TLD badges loaded in a magazine are automatically processed one by one using a motor driven mechanical assembly. Except for the entry of identification numbers in the same sequence in which the badges are loaded in the magazine, the entire process is automatic. All the front-end functions in the reader assembly are controlled by an Atmel 89C51 microcontroller on command from a Personal Computer through an RS-232 serial interface. A hot gas (N{sub 2}) heating system with electronic temperature control is used for rapid and uniform heating of the dosimeters. The glow curve and temperature profile of TL dosimeter is displayed on-line on a PC monitor and stored in the memory along with the badge data at the end of each reading cycle. The other features of the reader system are reproducible time temperature profile of hot gas, software based dark current sampling and subtraction, auto ranging, built-in safeguards in both hardware and software against mechanical and electronic failures, etc. To enable a wide range of measurement with high sensitivity to lower levels of TL, the EHT is automatically switched to a lower value when high TL output is encountered. The software is developed in to two parts. The first one consists of a ROM based assembly language software for the 89C51 microcontroller, which monitors various, circuits in the reader assembly and controls the motorized movements. The second part is a password protected user friendly, menu driven software package written in 'C' language for the reader control, on-line glow curve display and storage, dose data management record keeping and printout of dose reports, etc. Elaborate

  10. Shifting Rule Modification Strategy of Automatic Transmission Based on Driver-vehicle-road Environment

    Institute of Scientific and Technical Information of China (English)

    WU Guangqiang; ZHANG Deming

    2010-01-01

    Accidental or frequent shift often occurs when the shifting rule is built based on traditional two parameters (I.e., velocity and throttle), because the speed of engine varies slower than change of throttle opening. Currently, modifying shift point velocity value or throttle by throttle change rate is one of common methods, but the results are not so satisfactory in some working condition such as uphill. The reason is that these methods merely consider throttle change rate which is not enough for a car driving in driver-vehicle-road environment system. So a novel fuzzy control modification strategy is proposed to avoid or reduce those abnormal shift actions. It can adjust shifting rule by the change rate of throttle, current gear position and road environment information, while different gear position and driving environment get corresponding modification value. In order to compare the results of shifting actions, fuel consumption and braking distance, emergent braking in level road and extra-urban driving cycle(EUDC) working conditions with fuzzy shifting schedule modification strategy are simulated digitally. Furthermore, a hardware-in-the-loop simulation platform is introduced to verify its effect in slope road condition according to the ON/OFF numbers of solenoid valve in hydraulic system. The simulation results show that the problem of unexpected shift in those working conditions may be resolved by fuzzy modification strategy. At last, it is concluded that although there is some slight decline in power performance in uphill situation, this fuzzy modification strategy could correctly identify slope of road, decrease braking distance, improve vehicle comfort and fuel economy effectively and prolong the life of clutch system. So, this fuzzy logic shifting strategy provides important References for vehicle intelligent shifting schedule.

  11. Diagnostic Health Monitoring System Development for Army Vehicle Reliability

    Science.gov (United States)

    2011-07-01

    can be expressed as follows:  f (t)  w t  tb   f t  b1 18   fb (t) b1 18  where tb  b1  L 18V (2) where V is the vehicle...fib4dr fib5dr]; % Curve fit baseline driver rear pdr=polyfit(X,Zdr,2); mdr =mean(Zdr-(pdr(1)*X.^2+pdr(2)*X+pdr(3))); stddr=std(Zdr-(pdr(1)*X.^2+pdr

  12. Absorbable energy monitoring scheme: new design protocol to test vehicle structural crashworthiness

    Directory of Open Access Journals (Sweden)

    Sunday M. Ofochebe

    2016-05-01

    Full Text Available In vehicle crashworthiness design optimization detailed system evaluation capable of producing reliable results are basically achieved through high-order numerical computational (HNC models such as the dynamic finite element model, mesh-free model etc. However the application of these models especially during optimization studies is basically challenged by their inherent high demand on computational resources, conditional stability of the solution process, and lack of knowledge of viable parameter range for detailed optimization studies. The absorbable energy monitoring scheme (AEMS presented in this paper suggests a new design protocol that attempts to overcome such problems in evaluation of vehicle structure for crashworthiness. The implementation of the AEMS involves studying crash performance of vehicle components at various absorbable energy ratios based on a 2DOF lumped-mass-spring (LMS vehicle impact model. This allows for prompt prediction of useful parameter values in a given design problem. The application of the classical one-dimensional LMS model in vehicle crash analysis is further improved in the present work by developing a critical load matching criterion which allows for quantitative interpretation of the results of the abstract model in a typical vehicle crash design. The adequacy of the proposed AEMS for preliminary vehicle crashworthiness design is demonstrated in this paper, however its extension to full-scale design-optimization problem involving full vehicle model that shows greater structural detail requires more theoretical development.

  13. Absorbable energy monitoring scheme: new design protocol to test vehicle structural crashworthiness.

    Science.gov (United States)

    Ofochebe, Sunday M; Enibe, Samuel O; Ozoegwu, Chigbogu G

    2016-05-01

    In vehicle crashworthiness design optimization detailed system evaluation capable of producing reliable results are basically achieved through high-order numerical computational (HNC) models such as the dynamic finite element model, mesh-free model etc. However the application of these models especially during optimization studies is basically challenged by their inherent high demand on computational resources, conditional stability of the solution process, and lack of knowledge of viable parameter range for detailed optimization studies. The absorbable energy monitoring scheme (AEMS) presented in this paper suggests a new design protocol that attempts to overcome such problems in evaluation of vehicle structure for crashworthiness. The implementation of the AEMS involves studying crash performance of vehicle components at various absorbable energy ratios based on a 2DOF lumped-mass-spring (LMS) vehicle impact model. This allows for prompt prediction of useful parameter values in a given design problem. The application of the classical one-dimensional LMS model in vehicle crash analysis is further improved in the present work by developing a critical load matching criterion which allows for quantitative interpretation of the results of the abstract model in a typical vehicle crash design. The adequacy of the proposed AEMS for preliminary vehicle crashworthiness design is demonstrated in this paper, however its extension to full-scale design-optimization problem involving full vehicle model that shows greater structural detail requires more theoretical development.

  14. Road Vehicle Monitoring System Based on Intelligent Visual Internet of Things

    Directory of Open Access Journals (Sweden)

    Qingwu Li

    2015-01-01

    Full Text Available In recent years, with the rapid development of video surveillance infrastructure, more and more intelligent surveillance systems have employed computer vision and pattern recognition techniques. In this paper, we present a novel intelligent surveillance system used for the management of road vehicles based on Intelligent Visual Internet of Things (IVIoT. The system has the ability to extract the vehicle visual tags on the urban roads; in other words, it can label any vehicle by means of computer vision and therefore can easily recognize vehicles with visual tags. The nodes designed in the system can be installed not only on the urban roads for providing basic information but also on the mobile sensing vehicles for providing mobility support and improving sensing coverage. Visual tags mentioned in this paper consist of license plate number, vehicle color, and vehicle type and have several additional properties, such as passing spot and passing moment. Moreover, we present a fast and efficient image haze removal method to deal with haze weather condition. The experiment results show that the designed road vehicle monitoring system achieves an average real-time tracking accuracy of 85.80% under different conditions.

  15. An automatic de-striping algorithm for Ocean Colour Monitor Imagery

    Science.gov (United States)

    Tripathi, Santosh

    2012-07-01

    OCM-2 Mission is envisaged as the continuity service provider to Oceansat-1 (IRS-P4) with enhanced application potential. Oceansat-2 carries three payloads and Ocean Colour Monitor (OCM-2), is one of them. OCM-2 is a push broom sensor designed with 3730 active detectors. Along track striping caused by poorly characterized detector to detector calibration results in derived ocean colour products that are less useful. OCM-2 has eight bands, in which first two bands intermittently show vertical striping in the radiometrically corrected data. An algorithm based on sequential scale factor estimation is proposed to remove the vertical striping with minimum change (+/- 2 percent) in radiance. This paper outlines an automatic de-striping algorithm (ADM), discusses the improvement, quantifies the percentage change and describes the limitations of the method.

  16. Fully automatic spray-LBL machine with monitoring the real time growth of multilayer films using Quartz Crystal Microbalance

    Directory of Open Access Journals (Sweden)

    Shiratori S.

    2013-08-01

    Full Text Available A fully automatic spray-LBL machine with monitoring the real time growth of multilayer films using Quartz Crystal Microbalance (QCM techniques was newly developed. We established fully automatic spray layer-by-layer method by precisely controlling air pressure, solution flow, and spray pattern. The movement pattern towards the substrate during solution spraying allowed fabrication of a nano-scale, flat, thin film over a wide area. Optimization of spray conditions permitted fabrication of the flat film with high and low refractive indexes, and they were piled up alternatively to constitute a one-dimensional photonic crystal with near-infrared reflection characteristics. The heat shield effect of the near-infrared reflective film was also confirmed under natural sunlight. It was demonstrated that the fabrication using the automatic spray-LBL machine and real-time QCM monitoring allows the fabrication of optical quality thin films with precise thickness.

  17. LANDSLIDE ACTIVITY MONITORING WITH THE HELP OF UNMANNED AERIAL VEHICLE

    Directory of Open Access Journals (Sweden)

    V. Peterman

    2015-08-01

    Full Text Available This paper presents a practical example of a landslide monitoring through the use of a UAV - tracking and monitoring the movements of the Potoska Planina landslide located above the village of Koroska Bela in the western Karavanke Mountains in north-western Slovenia. Past geological research in this area indicated slope landmass movement of more than 10 cm per year. However, much larger movements have been detected since - significant enough to be observed photogrammetrically with the help of a UAV. With the intention to assess the dynamics of the landslide we have established a system of periodic observations carried out twice per year – in mid-spring and mid-autumn. This paper offers an activity summary along with the presentation of data acquisition, data processing and results.

  18. DEVELOPMENT OF A GEOGRAPHIC VISUALIZATION AND COMMUNICATIONS SYSTEMS (GVCS) FOR MONITORING REMOTE VEHICLES

    Energy Technology Data Exchange (ETDEWEB)

    COLEMAN, P.; DUNCAN, M.; DURFEE, R.C.; GOELTZ, R; HARRISON, G.; HODGSON, M.E.; KOOK, M.; MCCLAIN, S.

    1998-03-30

    The purpose of this project is to integrate a variety of geographic information systems capabilities and telecommunication technologies for potential use in geographic network and visualization applications. The specific technical goals of the project were to design, develop, and simulate the components of an audio/visual geographic communications system to aid future real-time monitoring, mapping and managing of transport vehicles. The system components of this feasibility study are collectively referred to as a Geographic Visualization and Communications System (GVCS). State-of-the-art techniques will be used and developed to allow both the vehicle operator and network manager to monitor the location and surrounding environment of a transport vehicle during shipment.

  19. Acquisition, orthorectification, and object-based classification of unmanned aerial vehicle (UAV) imagery for rangeland monitoring

    Science.gov (United States)

    In this paper, we examine the potential of using a small unmanned aerial vehicle (UAV) for rangeland inventory, assessment and monitoring. Imagery with 8-cm resolution was acquired over 290 ha in southwestern Idaho. We developed a semi-automated orthorectification procedure suitable for handling lar...

  20. Automatic monitoring of the effective thermal conductivity of snow in a low Arctic shrub tundra

    Science.gov (United States)

    Domine, F.; Barrere, M.; Sarrazin, D.; Morin, S.

    2015-03-01

    The effective thermal conductivity of snow, keff, is a critical variable which determines the temperature gradient in the snowpack and heat exchanges between the ground and the atmosphere through the snow. Its accurate knowledge is therefore required to simulate snow metamorphism, the ground thermal regime, permafrost stability, nutrient recycling and vegetation growth. Yet, few data are available on the seasonal evolution of snow thermal conductivity in the Arctic. We have deployed heated needle probes on low Arctic shrub tundra near Umiujaq, Quebec, (56°34´ N; 76°29´ W) and monitored automatically the evolution of keff for two consecutive winters, 2012-2013 and 2013-2014, at 4 heights in the snowpack. Shrubs are 20 cm high dwarf birch. Here, we develop an algorithm for the automatic determination of keff from the heating curves and obtain 404 keff values. We evaluate possible errors and biases associated with the use of the heated needles. The time-evolution of keff is very different for both winters. This is explained by comparing the meteorological conditions in both winters, which induced different conditions for snow metamorphism. In particular, important melting events the second year increased snow hardness, impeding subsequent densification and increase in thermal conductivity. Shrubs are observed to have very important impacts on snow physical evolution: (1) shrubs absorb light and facilitate snow melt under intense radiation; (2) the dense twig network of dwarf birch prevents snow compaction and therefore keff increase; (3) the low density depth hoar that forms within shrubs collapsed in late winter, leaving a void that was not filled by snow.

  1. Automatic monitoring of the effective thermal conductivity of snow in a low-Arctic shrub tundra

    Science.gov (United States)

    Domine, F.; Barrere, M.; Sarrazin, D.; Morin, S.; Arnaud, L.

    2015-06-01

    The effective thermal conductivity of snow, keff, is a critical variable which determines the temperature gradient in the snowpack and heat exchanges between the ground and the atmosphere through the snow. Its accurate knowledge is therefore required to simulate snow metamorphism, the ground thermal regime, permafrost stability, nutrient recycling and vegetation growth. Yet, few data are available on the seasonal evolution of snow thermal conductivity in the Arctic. We have deployed heated needle probes on low-Arctic shrub tundra near Umiujaq, Quebec, (N56°34'; W76°29') and monitored automatically the evolution of keff for two consecutive winters, 2012-2013 and 2013-2014, at four heights in the snowpack. Shrubs are 20 cm high dwarf birch. Here, we develop an algorithm for the automatic determination of keff from the heating curves and obtain 404 keff values. We evaluate possible errors and biases associated with the use of the heated needles. The time evolution of keff is very different for both winters. This is explained by comparing the meteorological conditions in both winters, which induced different conditions for snow metamorphism. In particular, important melting events in the second year increased snow hardness, impeding subsequent densification and increase in thermal conductivity. We conclude that shrubs have very important impacts on snow physical evolution: (1) shrubs absorb light and facilitate snow melt under intense radiation; (2) the dense twig network of dwarf birch prevent snow compaction, and therefore keff increase; (3) the low density depth hoar that forms within shrubs collapsed in late winter, leaving a void that was not filled by snow.

  2. Nonlinear automatic landing control of unmanned aerial vehicles on moving platforms via a 3D laser radar

    Energy Technology Data Exchange (ETDEWEB)

    Hervas, Jaime Rubio; Tang, Hui [School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798 (Singapore); Reyhanoglu, Mahmut [Physical Sciences Department, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114 (United States)

    2014-12-10

    This paper presents a motion tracking and control system for automatically landing Unmanned Aerial Vehicles (UAVs) on an oscillating platform using Laser Radar (LADAR) observations. The system itself is assumed to be mounted on a ship deck. A full nonlinear mathematical model is first introduced for the UAV. The ship motion is characterized by a Fourier transform based method which includes a realistic characterization of the sea waves. LADAR observation models are introduced and an algorithm to process those observations for yielding the relative state between the vessel and the UAV is presented, from which the UAV's state relative to an inertial frame can be obtained and used for feedback purposes. A sliding mode control algorithm is derived for tracking a landing trajectory defined by a set of desired waypoints. An extended Kalman filter (EKF) is proposed to account for process and observation noises in the design of a state estimator. The effectiveness of the control algorithm is illustrated through a simulation example.

  3. An efficient recursive least square-based condition monitoring approach for a rail vehicle suspension system

    Science.gov (United States)

    Liu, X. Y.; Alfi, S.; Bruni, S.

    2016-06-01

    A model-based condition monitoring strategy for the railway vehicle suspension is proposed in this paper. This approach is based on recursive least square (RLS) algorithm focusing on the deterministic 'input-output' model. RLS has Kalman filtering feature and is able to identify the unknown parameters from a noisy dynamic system by memorising the correlation properties of variables. The identification of suspension parameter is achieved by machine learning of the relationship between excitation and response in a vehicle dynamic system. A fault detection method for the vertical primary suspension is illustrated as an instance of this condition monitoring scheme. Simulation results from the rail vehicle dynamics software 'ADTreS' are utilised as 'virtual measurements' considering a trailer car of Italian ETR500 high-speed train. The field test data from an E464 locomotive are also employed to validate the feasibility of this strategy for the real application. Results of the parameter identification performed indicate that estimated suspension parameters are consistent or approximate with the reference values. These results provide the supporting evidence that this fault diagnosis technique is capable of paving the way for the future vehicle condition monitoring system.

  4. Study of automatic and manual terminal guidance and control systems for space shuttle vehicles. Volume 2: Section 4 through appendix B

    Science.gov (United States)

    Osder, S.; Keller, R.

    1971-01-01

    Guidance and control design studies that were performed for three specific space shuttle candidate vehicles are described. Three types of simulation were considered. The manual control investigations and pilot evaluations of the automatic system performance is presented. Recommendations for systems and equipment, both airborne and ground-based, necessary to flight test the guidance and control concepts for shuttlecraft terminal approach and landing are reported.

  5. Unmanned Aerial Vehicle (UAV for Monitoring Soil Erosion in Morocco

    Directory of Open Access Journals (Sweden)

    Johannes B. Ries

    2012-11-01

    Full Text Available This article presents an environmental remote sensing application using a UAV that is specifically aimed at reducing the data gap between field scale and satellite scale in soil erosion monitoring in Morocco. A fixed-wing aircraft type Sirius I (MAVinci, Germany equipped with a digital system camera (Panasonic is employed. UAV surveys are conducted over different study sites with varying extents and flying heights in order to provide both very high resolution site-specific data and lower-resolution overviews, thus fully exploiting the large potential of the chosen UAV for multi-scale mapping purposes. Depending on the scale and area coverage, two different approaches for georeferencing are used, based on high-precision GCPs or the UAV’s log file with exterior orientation values respectively. The photogrammetric image processing enables the creation of Digital Terrain Models (DTMs and ortho-image mosaics with very high resolution on a sub-decimetre level. The created data products were used for quantifying gully and badland erosion in 2D and 3D as well as for the analysis of the surrounding areas and landscape development for larger extents.

  6. Automatic Detection Method of Behavior Change in Dam Monitor Instruments Cause by Earthquakes

    Directory of Open Access Journals (Sweden)

    Fernando Mucio Bando

    2016-02-01

    Full Text Available A hydroelectric power plant consists of a project of great relevance for the social and economic development of a country. However, this kind of construction demands extensive attention because the occurrence of unusual behavior on its structure may result in undesirable consequences. Seismic waves are some of the phenomena which demand attention of one in charge of a dam safety because once it happens can directly affect the structure behavior. The target of this work is to present a methodology to automatically detect which monitoring instruments have gone under any change in pattern and their measurements after the seism. The detection method proposed is based on a neuro/fuzzy/bayesian formulation which is divided in three steps. Firstly, a clustering of points in a time series is developed from a self-organizing Kohonen map. Afterwards a fuzzy set is built to transform the initial time series, with arbitrary distribution, into a new series with beta distribution probability and thus enable the detection of changing points through a Monte Carlo simulation via Markov chains. In order to demonstrate the efficiency of the proposal the methodology has been applied in time series generated by Itaipu power plant building structures measurement instruments, which showed little behavior change after the earthquake in Chile in 2010.

  7. Analysis on machine tool systems using spindle vibration monitoring for automatic tool changer

    Directory of Open Access Journals (Sweden)

    Shang-Liang Chen

    2015-12-01

    Full Text Available Recently, the intelligent systems of technology have become one of the major items in the development of machine tools. One crucial technology is the machinery status monitoring function, which is required for abnormal warnings and the improvement of cutting efficiency. During processing, the mobility act of the spindle unit determines the most frequent and important part such as automatic tool changer. The vibration detection system includes the development of hardware and software, such as vibration meter, signal acquisition card, data processing platform, and machine control program. Meanwhile, based on the difference between the mechanical configuration and the desired characteristics, it is difficult for a vibration detection system to directly choose the commercially available kits. For this reason, it was also selected as an item for self-development research, along with the exploration of a significant parametric study that is sufficient to represent the machine characteristics and states. However, we also launched the development of functional parts of the system simultaneously. Finally, we entered the conditions and the parameters generated from both the states and the characteristics into the developed system to verify its feasibility.

  8. National automatic network of environmental radiological monitoring (RENAMORA); Red Nacional automatica de monitoreo radiologico ambiental (RENAMORA)

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez M, J.L.; Sanchez H, L. [CNSNS, Dr. Barragan 779, Col. Narvarte, 03020 Mexico D.F. (Mexico)]. e-mail: jlgonzalez@cnsns.gob.mx

    2003-07-01

    Inside the programs of Environmental Radiological Surveillance that it carries out the National Commission of Nuclear Security and Safeguards (CNSNS), it develops an National Automatic Network of Environmental Radiological Monitoring (RENAMORA), where it is carried out a registration of speed of environmental dose in continuous and simultaneous forms with the same moment of the measurement. This net allows to account with the meticulous and opportune information that will help to characterize, in dynamics form, the radiological conditions of diverse geographical zones of the country, including the sites that by normative require bigger surveillance, like its are the Laguna Verde Nuclear power station (CNLV), the Nuclear Center of Mexico (ININ) and the Radioactive waste storage center (CADER). This net is in its first development stage; three points inside the state of Veracruz, in the surroundings of the CNLV, already its are operating; the obtained data of rapidity of environmental dose are being stored in a database inside a primary data center located in the facilities of the CNSNS in Mexico city and its will be analyzed according to the project advances. At the moment, its are installing the first ten teams corresponding to the first phase of the RENAMORA (three stages); its are carried out operation tests, transmission, reception and administration of data. The obtained data will be interpreted, analyzed and inter compared to evaluate the risk levels to that it would be hold the population and to determine thresholds that allow to integrate the alarm systems that its had considered for emergency situations. (Author)

  9. Perspectives on railway track geometry condition monitoring from in-service railway vehicles

    Science.gov (United States)

    Weston, P.; Roberts, C.; Yeo, G.; Stewart, E.

    2015-07-01

    This paper presents a view of the current state of monitoring track geometry condition from in-service vehicles. It considers technology used to provide condition monitoring; some issues of processing and the determination of location; how things have evolved over the past decade; and what is being, or could/should be done in future research. Monitoring railway track geometry from an in-service vehicle is an attractive proposition that has become a reality in the past decade. However, this is only the beginning. Seeing the same track over and over again provides an opportunity for observing track geometry degradation that can potentially be used to inform maintenance decisions. Furthermore, it is possible to extend the use of track condition information to identify if maintenance is effective, and to monitor the degradation of individual faults such as dipped joints. There are full unattended track geometry measurement systems running on in-service vehicles in the UK and elsewhere around the world, feeding their geometry measurements into large databases. These data can be retrieved, but little is currently done with the data other than the generation of reports of track geometry that exceeds predefined thresholds. There are examples of simpler systems that measure some track geometry parameters more or less directly and accurately, but forego parameters such as gauge. Additionally, there are experimental systems that use mathematics and models to infer track geometry using data from sensors placed on an in-service vehicle. Finally, there are systems that do not claim to measure track geometry, but monitor some other quantity such as ride quality or bogie acceleration to infer poor track geometry without explicitly measuring it.

  10. MULTI-FUNCTION VEHICLE NAVIGATION AND MONITORING SYSTEM IN URBAN AREAS

    Institute of Scientific and Technical Information of China (English)

    SHENXue-song; LIUJian-ye; SUNYong-rong; CHENWu

    2005-01-01

    A vehicle navigation and monitoring system integrated by a high precision navigation system and a vehicle black box is studied to satisfy the demand for the intelligent transportation system (ITS). Firstly, the architecture of the system is proposed. Then the integration scheme of global positioning system/dead reckoning/bluetooth beacon/map matching (GPS/DR/BB/MM) with the hluetooth assistant positioning technology, and the algorithm of the Kalman filter for the integrated GPS/DR are investigated. Finally many field trials for principle prototypes are made. Experimental results show that the proposed integrated navigation algorithm is effective and feasible, and the function of the vehicle black-box is realized.

  11. Beach monitoring using Unmanned Aerial Vehicles: results of a multi-temporal study

    Science.gov (United States)

    Casella, Elisa; Rovere, Alessio; Casella, Marco; Pedroncini, Andrea; Ferrari, Marco; Vacchi, Matteo; Firpo, Marco

    2015-04-01

    The application of Unmanned Aerial Vehicles and photogrammetry techniques in earth sciences is flourishing. In this study, we show how we applied small Unmanned Aerial Vehicles to the study of topographic changes of a beach in Italy, NW Mediterranean Sea. We surveyed the same stretch of coastline three times in 5 months, obtaining ortophotos and digital elevation models of the beach using a structure from motion approach. We then calculated the difference in beach topography between each time step, and we related topography changes to both human and natural modifications of the beach morphology that can be inferred from aerial photos or wave data. We conclude that small drones have the potential to open new possibilities for beach monitoring studies, and can be successfully employed for multi-temporal monitoring studies at relatively low cost.

  12. A monitoring system based on electric vehicle three-stage wireless charging

    Science.gov (United States)

    Hei, T.; Liu, Z. Z.; Yang, Y.; Hongxing, CHEN; Zhou, B.; Zeng, H.

    2016-08-01

    An monitoring system for three-stage wireless charging was designed. The vehicle terminal contained the core board which was used for battery information collection and charging control and the power measurement and charging control core board was provided at the transmitting terminal which communicated with receiver by Bluetooth. A touch-screen display unit was designed based on MCGS (Monitor and Control Generated System) to simulate charging behavior and to debug the system conveniently. The practical application shown that the system could be stable and reliable, and had a favorable application foreground.

  13. Design and test of a situation-augmented display for an unmanned aerial vehicle monitoring task.

    Science.gov (United States)

    Lu, Jen-Li; Horng, Ruey-Yun; Chao, Chin-Jung

    2013-08-01

    In this study, a situation-augmented display for unmanned aerial vehicle (UAV) monitoring was designed, and its effects on operator performance and mental workload were examined. The display design was augmented with the knowledge that there is an invariant flight trajectory (formed by the relationship between altitude and velocity) for every flight, from takeoff to landing. 56 participants were randomly assigned to the situation-augmented display or a conventional display condition to work on 4 (number of abnormalities) x 2 (noise level) UAV monitoring tasks three times. Results showed that the effects of situation-augmented display on flight completion time and time to detect abnormalities were robust under various workload conditions, but error rate and perceived mental workload were unaffected by the display type. Results suggest that the UAV monitoring task is extremely difficult, and that display devices providing high-level situation-awareness may improve operator monitoring performance.

  14. Combining network and array waveform coherence for automatic location: examples from induced seismicity monitoring

    Science.gov (United States)

    Sick, Benjamin; Joswig, Manfred

    2017-03-01

    Events from induced seismicity suffer from low signal-to-noise ratios and noise spikes due to the industrial setting. Low magnitude thresholds are needed for traffic light warning systems. Conventional automatic location methods rely on independent picking of first arrivals from seismic wave onsets at recordings of single stations. Picking is done separately and without feedback from the actual location algorithm. If the recording network is small or only few phases can be associated, single wrong associations can lead to large errors in hypocentre locations and magnitude. Event location by source scanning which was established in the last two decades can provide more robust results. This study investigates how source-scanning can be extended and improved by integrating information from seismic arrays, that is, waveform stacking and Fisher ratio. These array methods rely on the coherency of the raw filtered waveforms while traditional source scanning uses a characteristic function to obtain coherency from otherwise incoherent waveforms between distant stations. Short-term/long-term average (STA/LTA) serves as the characteristic function and single station vertical-component traces for P-phases and radial and transverse components for S-phases are used. For array stations, the STA/LTA of the stacked vertical seismogram which is furthermore weighted by the STA/LTA of the Fisher ratio, dependent on backazimuth and slowness, is utilized for P-phases. The new method is tested on two diverse data sets from induced seismicity monitoring. In the chosen examples, the extension by array-processing techniques can reduce mean hypocentre errors up to a factor of 2.9, resolve ambiguities and further restrain the location.

  15. Development and Testing of an Automatic Transmission Shift Schedule Algorithm for Vehicle Simulation (SAE Paper 2015-01-1142)

    Science.gov (United States)

    The Advanced Light-Duty Powertrain and Hybrid Analysis (ALPHA) modeling tool was created by EPA to estimate greenhouse gas (GHG) emissions of light-duty vehicles. ALPHA is a physics-based, forward-looking, full vehicle computer simulation capable of analyzing various vehicle type...

  16. Monitoring system for gamma radiation of porch type for vehicles; Sistema de monitoreo de radiacion gamma tipo portal para vehiculos

    Energy Technology Data Exchange (ETDEWEB)

    Vazquez C, R.M.; Molina, G.; Gutierrez O, E.; Ramirez J, F.J.; Garcia H, J.M.; Aguilar B, M.A.; Vilchis P, A.E.; Cruz E, P.; Torres B, M.A. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2005-07-01

    A monitoring system of gamma radiation for vehicles of the porch type developed in the ININ is presented. This system carries out the radiological monitoring of the vehicles in continuous form, detecting the bottom radiological environment and the presence of nuclear material transported in vehicles. The vehicles are monitored while they pass to low speed through the porch. The detectors are plastic scintillators of great volume that allow high sensibility detection. The arrangement of detecting is interconnected in net, and the data are concentrated on a personal computer whose interface man-machine can be accessed from any personal computer connected to Internet. The system monitoring in real time with options of sampling times from 50 ms configurable up to 500 ms. (Author)

  17. Automatic polymerase chain reaction product detection system for food safety monitoring using zinc finger protein fused to luciferase

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, Wataru; Kezuka, Aki; Murakami, Yoshiyuki; Lee, Jinhee; Abe, Koichi [Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588 (Japan); Motoki, Hiroaki; Matsuo, Takafumi; Shimura, Nobuaki [System Instruments Co., Ltd., 776-2 Komiya-cho, Hachioji, Tokyo 192-0031 (Japan); Noda, Mamoru; Igimi, Shizunobu [Division of Biomedical Food Research, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501 (Japan); Ikebukuro, Kazunori, E-mail: ikebu@cc.tuat.ac.jp [Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588 (Japan)

    2013-11-01

    Graphical abstract: -- Highlights: •Zif268 fused to luciferase was used for E. coli O157, Salmonella and coliform detection. •Artificial zinc finger protein fused to luciferase was constructed for Norovirus detection. •An analyzer that automatically detects PCR products by zinc finger protein fused to luciferase was developed. •Target pathogens were specifically detected by the automatic analyzer with zinc finger protein fused to luciferase. -- Abstract: An automatic polymerase chain reaction (PCR) product detection system for food safety monitoring using zinc finger (ZF) protein fused to luciferase was developed. ZF protein fused to luciferase specifically binds to target double stranded DNA sequence and has luciferase enzymatic activity. Therefore, PCR products that comprise ZF protein recognition sequence can be detected by measuring the luciferase activity of the fusion protein. We previously reported that PCR products from Legionella pneumophila and Escherichia coli (E. coli) O157 genomic DNA were detected by Zif268, a natural ZF protein, fused to luciferase. In this study, Zif268–luciferase was applied to detect the presence of Salmonella and coliforms. Moreover, an artificial zinc finger protein (B2) fused to luciferase was constructed for a Norovirus detection system. In the luciferase activity detection assay, several bound/free separation process is required. Therefore, an analyzer that automatically performed the bound/free separation process was developed to detect PCR products using the ZF–luciferase fusion protein. By means of the automatic analyzer with ZF–luciferase fusion protein, target pathogenic genomes were specifically detected in the presence of other pathogenic genomes. Moreover, we succeeded in the detection of 10 copies of E. coli BL21 without extraction of genomic DNA by the automatic analyzer and E. coli was detected with a logarithmic dependency in the range of 1.0 × 10 to 1.0 × 10{sup 6} copies.

  18. On-Road Driver Monitoring System Based on a Solar-Powered In-Vehicle Embedded Platform

    Directory of Open Access Journals (Sweden)

    Yen-Lin Chen

    2014-01-01

    Full Text Available This study presents an on-road driver monitoring system, which is implemented on a stand-alone in-vehicle embedded system and driven by effective solar cells. The driver monitoring function is performed by an efficient eye detection technique. Through the driver’s eye movements captured from the camera, the attention states of the driver can be determined and any fatigue states can be avoided. This driver monitoring technique is implemented on a low-power embedded in-vehicle platform. Besides, this study also proposed monitoring machinery that can detect the brightness around the car to effectively determine whether this in-vehicle system is driven by the solar cells or by the vehicle battery. On sunny days, the in-vehicle system can be powered by solar cell in places without the vehicle battery. While in the evenings or on rainy days, the ambient solar brightness is insufficient, and the system is powered by the vehicle battery. The proposed system was tested under the conditions that the solar irradiance is 10 to 113 W/m2 and solar energy and brightness at 10 to 170. From the testing results, when the outside solar radiation is high, the brightness of the inside of the car is increased, and the eye detection accuracy can also increase as well. Therefore, this solar powered driver monitoring system can be efficiently applied to electric cars to save energy consumption and promote the driving safety.

  19. Experimental analysis of vehicle-bridge interaction using a wireless monitoring system and a two-stage system identification technique

    Science.gov (United States)

    Kim, Junhee; Lynch, Jerome P.

    2012-04-01

    Deterioration of bridges under repeated traffic loading has called attention to the need for improvements in the understanding of vehicle-bridge interaction. While analytical and numerical models have been previously explored to describe the interaction that exists between a sprung mass (i.e., a moving vehicle) and an elastic beam (i.e., bridge), comparatively less research has been focused on the experimental observation of vehicle-bridge interaction. A wireless monitoring system with wireless sensors installed on both the bridge and moving vehicle is proposed to record the dynamic interaction between the bridge and vehicle. Time-synchronized vehicle-bridge response data is used within a two-stage system identification methodology. In the first stage, the free-vibration response of the bridge is used to identify the dynamic characteristics of the bridge. In the second stage, the vehicle-bridge response data is used to identify the time varying load imposed on the bridge from the vehicle. To test the proposed monitoring and system identification strategy, the 180 m long Yeondae Bridge (Icheon, Korea) was selected. A dense network of wireless sensors was installed on the bridge while wireless sensors were installed on a multi-axle truck. The truck was driven across the bridge at constant velocity with bridge and vehicle responses measured. Excellent agreement between the measured Yeondae Bridge response and that predicted by an estimated vehicle-bridge interaction model validates the proposed strategy.

  20. Study on the Framework of Vehicle Automatic Navigation System%车辆自动导航系统基本框架研究

    Institute of Scientific and Technical Information of China (English)

    张可; 刘小明; 王笑京

    2001-01-01

    讨论了车辆自动导航系统的基本框架,将其划分为路网数据库管理、车辆定位、路线优化、路线引导4个子系统,并提出了各个子系统需要实现的功能,以及实现这些功能所需的关键技术%As one of the important research aspect of IntelligentTransportation System (ITS), the technique of vehicle automatic navigation has shown great prospect for application. This paper discusses the framework of the vehicle automatic navigation system, which could be divided into four subsystems: the database management subsystem for the road networks, the vehicle positioning subsystem, the route planning subsystem and the route guidance subsystem. The functions of each subsystem and the key techniques for realizing these functions are proposed.

  1. Unmanned Surface Vehicle Automatic Navigation Based On GPS%基于 GPS 定位的无人艇自主导航

    Institute of Scientific and Technical Information of China (English)

    陈永泽; 舒军勇; 王真亮; 谢能刚

    2016-01-01

    This paper mainly investigated unmanned surface vehicle automatic navigation based on GPS.According to the GPS received position coordinates and planning target point coordinates,this paper put forward an automatic navigation algorithm.Experimental sample of unmanned surface vehicle was established and actual trajectory was gained.By the actual trajectory and the comparison of theoretical trajectory as a result,we proved that the unmanned surface vehicle navigation algorithm has good robustness.%研究了基于 GPS 定位技术的无人艇自主导航。根据 GPS 接收到的位置坐标和规划的目标点坐标,提出一种自主导航算法。研制了无人艇实验样船,得到了无人艇实际航行轨迹。实际航行轨迹和理论航行轨迹的对比结果表明:该无人艇自主导航算法具有良好的鲁棒性。

  2. Bluetooth Wireless Monitoring, Managing and Control for Inter Vehicle in Vehicular Ad-Hoc Networks

    Directory of Open Access Journals (Sweden)

    Helia Mamdouhi

    2009-01-01

    Full Text Available Problem statement: The car users expect more and more accessories available in their cars, but the accessories available needed manage by driver manually and not properly manage by smart system. All these accessories are able to control by user manually using different and standalone controllers. Besides, the controller itself uses RF technology which is not existed in mobile devices. So there is lack of a comprehensive and integrated system to manage, control and monitor all the accessories inside the vehicle by using a personal mobile phone. Design and development of an integrated system to manage and control all kind of inter vehicle accessories, improving the efficiency and functionality of inter vehicle communications for the car users. Approach: The proposed system was based on Microcontroller, Bluetooth and Java technology and in order to achieve the idea of an intelligence car with ability to uses personal mobile hand phone as a remote interface. Development strategies for this innovation are includes two phases: (1 java based application platform-designed and developed for smart phones and PDAs (2 hardware design and implementation of the receiver side-compatible smart system to managing and interconnection between all inside accessories based on monitoring and controlling mechanisms by Bluetooth media. Results: The designed system included hardware and software and the completed prototype had tested successfully on the real vehicles. During the testing stage, the components and devices were connected and implemented on the vehicle and the user by installing the system interface on a mobile phone is able to monitor and manage the vehicle accessories, the efficiency, adaptively and range of functionality of the system has proved with the various car accessories. Conclusion: This study involved design a new system to decrease the hot temperature inside a car that affecting the health of the car driver and the car driver is able to control

  3. Autonomous Underwater Vehicle Survey Design for Monitoring Carbon Capture and Storage Sites

    Science.gov (United States)

    Bull, J. M.; Cevatoglu, M.; Connelly, D.; Wright, I. C.; McPhail, S.; Shitashima, K.

    2013-12-01

    Long-term monitoring of sub-seabed Carbon Capture and Storage (CCS) sites will require systems that are flexible, independent, and have long-endurance. In this presentation we will discuss the utility of autonomous underwater vehicles equipped with different sensor packages in monitoring storage sites. We will present data collected using Autosub AUV, as part of the ECO2 project, from the Sleipner area of the North Sea. The Autosub AUV was equipped with sidescan sonar, an EM2000 multibeam systems, a Chirp sub-bottom profiler, and a variety of chemical sensors. Our presentation will focus on survey design, and the simultaneous use of multiple sensor packages in environmental monitoring on the continental shelf.

  4. Automatic polymerase chain reaction product detection system for food safety monitoring using zinc finger protein fused to luciferase.

    Science.gov (United States)

    Yoshida, Wataru; Kezuka, Aki; Murakami, Yoshiyuki; Lee, Jinhee; Abe, Koichi; Motoki, Hiroaki; Matsuo, Takafumi; Shimura, Nobuaki; Noda, Mamoru; Igimi, Shizunobu; Ikebukuro, Kazunori

    2013-11-01

    An automatic polymerase chain reaction (PCR) product detection system for food safety monitoring using zinc finger (ZF) protein fused to luciferase was developed. ZF protein fused to luciferase specifically binds to target double stranded DNA sequence and has luciferase enzymatic activity. Therefore, PCR products that comprise ZF protein recognition sequence can be detected by measuring the luciferase activity of the fusion protein. We previously reported that PCR products from Legionella pneumophila and Escherichia coli (E. coli) O157 genomic DNA were detected by Zif268, a natural ZF protein, fused to luciferase. In this study, Zif268-luciferase was applied to detect the presence of Salmonella and coliforms. Moreover, an artificial zinc finger protein (B2) fused to luciferase was constructed for a Norovirus detection system. In the luciferase activity detection assay, several bound/free separation process is required. Therefore, an analyzer that automatically performed the bound/free separation process was developed to detect PCR products using the ZF-luciferase fusion protein. By means of the automatic analyzer with ZF-luciferase fusion protein, target pathogenic genomes were specifically detected in the presence of other pathogenic genomes. Moreover, we succeeded in the detection of 10 copies of E. coli BL21 without extraction of genomic DNA by the automatic analyzer and E. coli was detected with a logarithmic dependency in the range of 1.0×10 to 1.0×10(6) copies.

  5. An automatic segmentation method for building facades from vehicle-borne LiDAR point cloud data based on fundamental geographical data

    Science.gov (United States)

    Li, Yongqiang; Mao, Jie; Cai, Lailiang; Zhang, Xitong; Li, Lixue

    2016-03-01

    In this paper, the author proposed a segmentation method based on the fundamental geographic data, the algorithm describes as following: Firstly, convert the coordinate system of fundamental geographic data to that of vehicle- borne LiDAR point cloud though some data preprocessing work, and realize the coordinate system between them; Secondly, simplify the feature of fundamental geographic data, extract effective contour information of the buildings, then set a suitable buffer threshold value for building contour, and segment out point cloud data of building facades automatically; Thirdly, take a reasonable quality assessment mechanism, check and evaluate of the segmentation results, control the quality of segmentation result. Experiment shows that the proposed method is simple and effective. The method also has reference value for the automatic segmentation for surface features of other types of point cloud.

  6. Design of Automatic Guide Vehicle Based on AT89S52%基于AT89S52的自动导引车设计

    Institute of Scientific and Technical Information of China (English)

    何裕源; 何晓晖

    2013-01-01

    介绍一种自动导引车(Automatic Guided Vehicle)的设计方法,小车采用红外传感器为导引装置,直流电机为驱动装置,以AT89S52为主控核心,指导自动导引车自动识别正确轨迹并实现运行.该系统电气原理简单,可靠性能高,为自动导引车在工业中应用开发提供参考.

  7. Design of overload vehicle monitoring and response system based on DSP

    Science.gov (United States)

    Yu, Yan; Liu, Yiheng; Zhao, Xuefeng

    2014-03-01

    The overload vehicles are making much more damage to the road surface than the regular ones. Many roads and bridges are equipped with structural health monitoring system (SHM) to provide early-warning to these damage and evaluate the safety of road and bridge. However, because of the complex nature of SHM system, it's expensive to manufacture, difficult to install and not well-suited for the regular bridges and roads. Based on this application background, this paper designs a compact structural health monitoring system based on DSP, which is highly integrated, low-power, easy to install and inexpensive to manufacture. The designed system is made up of sensor arrays, the charge amplifier module, the DSP processing unit, the alarm system for overload, and the estimate for damage of the road and bridge structure. The signals coming from sensor arrays go through the charge amplifier. DSP processing unit will receive the amplified signals, estimate whether it is an overload signal or not, and convert analog variables into digital ones so that they are compatible with the back-end digital circuit for further processing. The system will also restrict certain vehicles that are overweight, by taking image of the car brand, sending the alarm, and transferring the collected pressure data to remote data center for further monitoring analysis by rain-flow counting method.

  8. Research and implement of remote vehicle monitoring and early-warning system based on GPS/GPRS

    Science.gov (United States)

    Li, Shiwu; Tian, Jingjing; Yang, Zhifa; Qiao, Feiyan

    2013-03-01

    Concerning the problem of road traffic safety, remote monitoring and early-warning of vehicle states was the key to prevent road traffic accidents and improve the transportation effectiveness. Through the embedded development technology, a remote vehicle monitoring and early-warning system was developed based on UNO2170 industrial computer of Advantech with WinCE operating system using Embedded Visual C++ (EVC), which combined with multisensor data acquisition technology, global positioning system (GPS) and general packet radio service (GPRS). It achieved the remote monitoring and early-warning of commercial vehicle. This system was installed in a CA1046L2 light truck. Through many road tests, test results showed that the system reacted rapidly for abnormal vehicle states and had stable performance.

  9. A Novel Series Connected Batteries State of High Voltage Safety Monitor System for Electric Vehicle Application

    Directory of Open Access Journals (Sweden)

    Qiang Jiaxi

    2013-01-01

    Full Text Available Batteries, as the main or assistant power source of EV (Electric Vehicle, are usually connected in series with high voltage to improve the drivability and energy efficiency. Today, more and more batteries are connected in series with high voltage, if there is any fault in high voltage system (HVS, the consequence is serious and dangerous. Therefore, it is necessary to monitor the electric parameters of HVS to ensure the high voltage safety and protect personal safety. In this study, a high voltage safety monitor system is developed to solve this critical issue. Four key electric parameters including precharge, contact resistance, insulation resistance, and remaining capacity are monitored and analyzed based on the equivalent models presented in this study. The high voltage safety controller which integrates the equivalent models and control strategy is developed. By the help of hardware-in-loop system, the equivalent models integrated in the high voltage safety controller are validated, and the online electric parameters monitor strategy is analyzed and discussed. The test results indicate that the high voltage safety monitor system designed in this paper is suitable for EV application.

  10. Using Autonomous Underwater Vehicles as Sensor Platforms for Ice-Monitoring

    Directory of Open Access Journals (Sweden)

    Petter Norgren

    2014-10-01

    Full Text Available Due to the receding sea-ice extent in the Arctic, and the potentially large undiscovered petroleum resources present north of the Arctic circle, offshore activities in ice-infested waters are increasing. Due to the presence of drifting sea-ice and icebergs, ice management (IM becomes an important part of the offshore operation, and an important part of an IM system is the ability to reliably monitor the ice conditions. An autonomous underwater vehicle (AUV has a unique capability of high underwater spatial and temporal coverage, making it suitable for monitoring applications. Since the first Arctic AUV deployment in 1972, AUV technology has matured and has been used in complex under-ice operations. This paper motivates the use of AUVs as an ice-monitoring sensor platform. It discusses relevant sensor capabilities and challenges related to communication and navigation. This paper also presents experiences from a field campaign that took place in Ny-Aalesund at Svalbard in January 2014, where a REMUS 100 AUV was used for sea-floor mapping and collection of oceanographic parameters. Based on this, we discuss the experiences related to using AUVs for ice-monitoring. We conclude that AUVs are highly applicable for ice-monitoring, but further research is needed.

  11. Vehicle License Plate Recognition Syst

    Directory of Open Access Journals (Sweden)

    Meenakshi,R. B. Dubey

    2012-12-01

    Full Text Available The vehicle license plate recognition system has greater efficiency for vehicle monitoring in automatic zone access control. This Plate recognition system will avoid special tags, since all vehicles possess a unique registration number plate. A number of techniques have been used for car plate characters recognition. This system uses neural network character recognition and pattern matching of characters as two character recognition techniques. In this approach multilayer feed-forward back-propagation algorithm is used. The performance of the proposed algorithm has been tested on several car plates and provides very satisfactory results.

  12. On-Road Driver Monitoring System Based on a Solar-Powered In-Vehicle Embedded Platform

    OpenAIRE

    Yen-Lin Chen; Chao-Wei Yu; Zi-Jie Chien; Chin-Hsuan Liu; Hsin-Han Chiang

    2014-01-01

    This study presents an on-road driver monitoring system, which is implemented on a stand-alone in-vehicle embedded system and driven by effective solar cells. The driver monitoring function is performed by an efficient eye detection technique. Through the driver’s eye movements captured from the camera, the attention states of the driver can be determined and any fatigue states can be avoided. This driver monitoring technique is implemented on a low-power embedded in-vehicle platform. Besides...

  13. Characterization of a gamma spectrometry monitor LaBr{sub 3} automatic stations for environmental monitoring; Caracterizacion de un monitor de espectrometria gamma de LaBr{sub 3} para las estaciones automaticas de vigilancia ambiental

    Energy Technology Data Exchange (ETDEWEB)

    Vargas, A.; Salvador-Castineria, P.; Roig, M.; Fernandez-Varea, J. M.; Padro, A.

    2011-07-01

    The Institut de Techniques Energetiques (INTE) of the Universitat Politecnica de Catalunya (UPC) is collaborating with the German Radiation Protection (BfS) in order to characterize LaBr{sub 3} detector developed by the BfS for future installation of monitoring networks automatic. This paper presents the results obtained with the monitor installed on the roof of the premises of INTE South Campus located in Barcelona and Monte Carlo simulations that complement its characterization.

  14. Novel compact panomorph lens based vision system for monitoring around a vehicle

    Science.gov (United States)

    Thibault, Simon

    2008-04-01

    Automotive applications are one of the largest vision-sensor market segments and one of the fastest growing ones. The trend to use increasingly more sensors in cars is driven both by legislation and consumer demands for higher safety and better driving experiences. Awareness of what directly surrounds a vehicle affects safe driving and manoeuvring of a vehicle. Consequently, panoramic 360° Field of View imaging can contributes most to the perception of the world around the driver than any other sensors. However, to obtain a complete vision around the car, several sensor systems are necessary. To solve this issue, a customized imaging system based on a panomorph lens will provide the maximum information for the drivers with a reduced number of sensors. A panomorph lens is a hemispheric wide angle anamorphic lens with enhanced resolution in predefined zone of interest. Because panomorph lenses are optimized to a custom angle-to-pixel relationship, vision systems provide ideal image coverage that reduces and optimizes the processing. We present various scenarios which may benefit from the use of a custom panoramic sensor. We also discuss the technical requirements of such vision system. Finally we demonstrate how the panomorph based visual sensor is probably one of the most promising ways to fuse many sensors in one. For example, a single panoramic sensor on the front of a vehicle could provide all necessary information for assistance in crash avoidance, lane tracking, early warning, park aids, road sign detection, and various video monitoring views.

  15. ON-BOARD MONITORING OF TECHNICAL STATE FOR POWER UNITS OF WHEELED AND TRACKED VEHICLES

    Directory of Open Access Journals (Sweden)

    Yu. D. Karpievich

    2016-01-01

    Full Text Available The paper considers new methodologies pertaining to on-board diagnosis of wear-out rate for friction linings of a clutch driven disk and friction discs of a hydraulic press clutch of transmission gear boxes which are based on physical process that uses friction work as an integrated indicator. A new methodology in determination of life-span rate for engine oil has been developed in the paper. The paper presents block schematic diagrams for on-board monitoring of technical state for power units of wheeled and tracked vehicles. Usage of friction work as an integrated indicator for determination of wear-out rate for friction linings of clutch driven disk and friction discs of a haydraulic press clutch makes it possible timely at any operational period of wheeled and tracked vehicles to determine their residual operation life and forecast their replacement.While taking volume of the used fuel for determination of engine oil life-span rate it permits quickly and effectively at any operational period of wheeled and tracked vehicles to determine residual useful life of the engine oil and also forecast its replacement.

  16. Diagnostics monitor of the braking efficiency in the on board diagnostics system for the motor vehicles

    Science.gov (United States)

    Gajek, Andrzej

    2016-09-01

    The article presents diagnostics monitor for control of the efficiency of brakes in various road conditions in cars equipped with pressure sensor in brake (ESP) system. Now the brake efficiency of the vehicles is estimated periodically in the stand conditions on the base of brake forces measurement or in the road conditions on the base of the brake deceleration. The presented method allows to complete the stand - periodical tests of the brakes by current on board diagnostics system OBD for brakes. First part of the article presents theoretical dependences between deceleration of the vehicle and brake pressure. The influence of the vehicle mass, initial speed of braking, temperature of brakes, aerodynamic drag, rolling resistance, engine resistance, state of the road surface, angle of the road sloping on the deceleration have been analysed. The manner of the appointed of these parameters has been analysed. The results of the initial investigation have been presented. At the end of the article the strategy of the estimation and signalization of the irregular value of the deceleration are presented.

  17. Automatic data processing and analysis system for monitoring region around a planned nuclear power plant

    Science.gov (United States)

    Kortström, Jari; Tiira, Timo; Kaisko, Outi

    2016-03-01

    The Institute of Seismology of University of Helsinki is building a new local seismic network, called OBF network, around planned nuclear power plant in Northern Ostrobothnia, Finland. The network will consist of nine new stations and one existing station. The network should be dense enough to provide azimuthal coverage better than 180° and automatic detection capability down to ML -0.1 within a radius of 25 km from the site.The network construction work began in 2012 and the first four stations started operation at the end of May 2013. We applied an automatic seismic signal detection and event location system to a network of 13 stations consisting of the four new stations and the nearest stations of Finnish and Swedish national seismic networks. Between the end of May and December 2013 the network detected 214 events inside the predefined area of 50 km radius surrounding the planned nuclear power plant site. Of those detections, 120 were identified as spurious events. A total of 74 events were associated with known quarries and mining areas. The average location error, calculated as a difference between the announced location from environment authorities and companies and the automatic location, was 2.9 km. During the same time period eight earthquakes between magnitude range 0.1-1.0 occurred within the area. Of these seven could be automatically detected. The results from the phase 1 stations of the OBF network indicates that the planned network can achieve its goals.

  18. Vocal Anuran Community Monitoring with Automatic Recording Devices at Swanquarter National Wildlife Refuge: Summary Report 2014

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — During 2014, the Southeast Region Inventory and Monitoring Branch conducted the first vocal anuran monitoring at Swanquarter National Wildlife Refuge. The...

  19. Vocal Anuran Community Monitoring with Automatic Recording Devices at Mattamuskeet National Wildlife Refuge Summary Report 2015

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — During 2015, the Southeast Region Inventory and Monitoring Branch conducted the first-ever, pilot vocal anuran monitoring project at Mattamuskeet National Wildlife...

  20. Automatic classification of urban traffic noise onboard an acoustic monitoring system

    NARCIS (Netherlands)

    Wessels, P.W.; Zon, A.T. van; Basten, T.G.H.

    2013-01-01

    Recent developments in acoustic monitoring systems make it possible to measure complex noise situations, like urban traffic noise, continuously. Monitoring provides more insight in the noise situation, from which more specific and (cost) effective measures can be taken. Monitoring also allows direct

  1. Health Monitoring Technology for Thermal Protection Systems on Reusable Hypersonic Vehicles

    Science.gov (United States)

    Milos, Frank S.; Watters, D. G.; Heinemann, J. M.; Karunaratne, K. S.; Arnold, Jim (Technical Monitor)

    2001-01-01

    Integrated subsystem health diagnostics is an area where major improvements have been identified for potential implementation into the design of new reusable launch vehicles (RLVs) in order to reduce life cycle costs, to increase safety margins, and to improve mission reliability. This talk summarizes a joint effort between NASA Ames and industry partners to develop rapid non-contact diagnostic tools for health and performance monitoring of thermal protection systems (TPS) on future RLVs. The specific goals for TPS health monitoring are to increase the speed and reliability of TPS inspections for improved operability at lower cost. The technology being developed includes a 3-D laser scanner for examining the exterior surface of the TPS, and a subsurface microsensor suite for monitoring the health and performance of the TPS. The sensor suite consists of passive overlimit sensors and sensors for continuous parameter monitoring in flight. The sensors are integrated with radio-frequency identification (RFID) microchips to enable wireless communication of-the sensor data to an external reader that may be a hand-held scanner or a large portal. Prototypes of the laser system and both types of subsurface sensors have been developed. The laser scanner was tested on Shuttle Orbiter Columbia and was able to dimension surface chips and holes on a variety of TPS materials. The temperature-overlimit microsensor has a diameter under 0.05 inch (suitable for placement in gaps between ceramic TPS tiles) and can withstand 700 F for 15 minutes.

  2. Cloud-Based Smart Health Monitoring System for Automatic Cardiovascular and Fall Risk Assessment in Hypertensive Patients.

    Science.gov (United States)

    Melillo, P; Orrico, A; Scala, P; Crispino, F; Pecchia, L

    2015-10-01

    The aim of this paper is to describe the design and the preliminary validation of a platform developed to collect and automatically analyze biomedical signals for risk assessment of vascular events and falls in hypertensive patients. This m-health platform, based on cloud computing, was designed to be flexible, extensible, and transparent, and to provide proactive remote monitoring via data-mining functionalities. A retrospective study was conducted to train and test the platform. The developed system was able to predict a future vascular event within the next 12 months with an accuracy rate of 84 % and to identify fallers with an accuracy rate of 72 %. In an ongoing prospective trial, almost all the recruited patients accepted favorably the system with a limited rate of inadherences causing data losses (<20 %). The developed platform supported clinical decision by processing tele-monitored data and providing quick and accurate risk assessment of vascular events and falls.

  3. Automatic Condition Monitoring of Industrial Rolling-Element Bearings Using Motor’s Vibration and Current Analysis

    DEFF Research Database (Denmark)

    Yang, Zhenyu

    2015-01-01

    An automatic condition monitoring for a class of industrial rolling-element bearings is developed based on the vibration as well as stator current analysis. The considered fault scenarios include a single-point defect, multiple-point defects, and a type of distributed defect. Motivated...... is extensively studied under diverse operating conditions: different sensor locations, motor speeds, loading conditions, and data samples from different time segments. The experimental results showed the powerful capability of vibration analysis in the bearing point defect fault diagnosis. The current analysis...... by the potential commercialization, the developed system is promoted mainly using off-the-shelf techniques, that is, the high-frequency resonance technique with envelope detection and the average of short-time Fourier transform. In order to test the flexibility and robustness, the monitoring performance...

  4. An automatic medication self-management and monitoring system for independently living patients.

    Science.gov (United States)

    McCall, Corey; Maynes, Branden; Zou, Cliff C; Zhang, Ning J

    2013-04-01

    This paper describes the development, prototyping, and evaluation of RMAIS (RFID-based Medication Adherence Intelligence System). Previous work in this field has resulted in devices that are either costly or too complicated for general (especially elderly) patients to operate. RMAIS provides a practical and economical means for ordinary patients to easily manage their own medications, taking the right dosage of medicine at the prescribed time in a fully automatic way. The system design has the following features: (1) fully automatic operation for easy medication by using the built-in scale for dosage measurement and a motorized rotation plate to deliver the right medicine container in front of a patient, (2) various medication reminder messages for patients, and noncompliance alerts for caregivers (such as doctors, relatives or social workers who take care of the patients), and (3) incremental and economical adoption by pharmacies, patients, and insurance companies.

  5. Integrating High-Resolution Taskable Imagery into a Sensorweb for Automatic Space-Based Monitoring of Flooding in Thailand

    Science.gov (United States)

    Chien, Steve; Mclaren, David; Doubleday, Joshua; Tran, Daniel; Tanpipat, Veerachai; Chitradon, Royol; Boonya-aroonnet, Surajate; Thanapakpawin, Porranee; Mandl, Daniel

    2012-01-01

    Several space-based assets (Terra, Aqua, Earth Observing One) have been integrated into a sensorweb to monitor flooding in Thailand. In this approach, the Moderate Imaging Spectrometer (MODIS) data from Terra and Aqua is used to perform broad-scale monitoring to track flooding at the regional level (250m/pixel) and EO-1 is autonomously tasked in response to alerts to acquire higher resolution (30m/pixel) Advanced Land Imager (ALI) data. This data is then automatically processed to derive products such as surface water extent and volumetric water estimates. These products are then automatically pushed to organizations in Thailand for use in damage estimation, relief efforts, and damage mitigation. More recently, this sensorweb structure has been used to request imagery, access imagery, and process high-resolution (several m to 30m), targetable asset imagery from commercial assets including Worldview-2, Ikonos, Radarsat-2, Landsat-7, and Geo-Eye-1. We describe the overall sensorweb framework as well as new workflows and products made possible via these extensions.

  6. An autonomous unmanned aerial vehicle sensing system for structural health monitoring of bridges

    Science.gov (United States)

    Reagan, Daniel; Sabato, Alessandro; Niezrecki, Christopher; Yu, Tzuyang; Wilson, Richard

    2016-04-01

    As civil infrastructure (i.e. bridges, railways, and tunnels) continues to age; the frequency and need to perform inspection more quickly on a broader scale increases. Traditional inspection and monitoring techniques (e.g., visual inspection, mechanical sounding, rebound hammer, cover meter, electrical potential measurements, ultrasound, and ground penetrating radar) may produce inconsistent results, require lane closure, are labor intensive and time-consuming. Therefore, new structural health monitoring systems must be developed that are automated, highly accurate, minimally invasive, and cost effective. Three-dimensional (3D) digital image correlation (DIC) systems have the merits of extracting full-field strain, deformation, and geometry profiles. These profiles can then be stitched together to generate a complete integrity map of the area of interest. Concurrently, unmanned aerial vehicles (UAVs) have emerged as valuable resources for positioning sensing equipment where it is either difficult to measure or poses a risk to human safety. UAVs have the capability to expedite the optical-based measurement process, offer increased accessibility, and reduce interference with local traffic. Within this work, an autonomous unmanned aerial vehicle in conjunction with 3D DIC was developed for monitoring bridges. The capabilities of the proposed system are demonstrated in both laboratory measurements and data collected from bridges currently in service. Potential measurement influences from platform instability, rotor vibration and positioning inaccuracy are also studied in a controlled environment. The results of these experiments show that the combination of autonomous flight with 3D DIC and other non-contact measurement systems provides a valuable and effective civil inspection platform.

  7. Therapeutic concordance of two portable monitors and two routine automatic oral anticoagulant monitoring systems using as reference the manual prothrombin time technique.

    Science.gov (United States)

    Vacas, Marta; Lafuente, Pedro José; Unanue, Iciar; Santos, Mónica; Iriarte, Jose Antonio

    2003-01-01

    Two models of capillary blood prothrombin time (PT) monitoring systems were evaluated for analytical performance and then compared with two routine PT systems using the reference manual technique and a high-sensitivity thromboplastin. Two sets of 60 and 80 plasmas were analyzed from anticoagulated patients stabilized over 3 months in an INR range 2-3.5 for therapy. Capillary PT determination was performed in two portable monitors, CoaguChek S and CoaguChek PT (Roche Diagnostics), and plasma automatic methods were Neoplastine/STA (Diagnostics Stago) and PT-FibrinogenHsPlus/ACL7000 (Instrumental Laboratories). Thromboplastin Bilbao (TBi), an in-house high-sensitivity rabbit thromboplastin (ISI=1.08), recommended as the reference reagent by an External Spanish Oral Anticoagulant Quality Assessment, was used in the PT manual technique. The two monitors' coefficients of correlation with the reference system were 0.74 for CoaguChek S and 0.81 for CoaguChek PT. The automatic routine systems showed a correlation of 0.92 (Neoplastine/STA) and 0.91 (PT-FbHsPlus/ACL7000). Clinical agreement expressed as the percentage of simple correlation ranged between 75.0% (CoaguChek S) and 88.9% (Neoplastine/STA). The systems having the best kappa index with the manual technique were CoaguChek PT (71.9%) and the Neoplastine/STA system (73%). The routine PT management systems exhibited better correlation and percentage of concordance when using the TBi/manual technique than did the portable monitors, which moreover performed unequally in this regard.

  8. Networking Multiple Autonomous Air and Ocean Vehicles for Oceanographic Research and Monitoring

    Science.gov (United States)

    McGillivary, P. A.; Borges de Sousa, J.; Rajan, K.

    2013-12-01

    Autonomous underwater and surface vessels (AUVs and ASVs) are coming into wider use as components of oceanographic research, including ocean observing systems. Unmanned airborne vehicles (UAVs) are now available at modest cost, allowing multiple UAVs to be deployed with multiple AUVs and ASVs. For optimal use good communication and coordination among vehicles is essential. We report on the use of multiple AUVs networked in communication with multiple UAVs. The UAVs are augmented by inferential reasoning software developed at MBARI that allows UAVs to recognize oceanographic fronts and change their navigation and control. This in turn allows UAVs to automatically to map frontal features, as well as to direct AUVs and ASVs to proceed to such features and conduct sampling via onboard sensors to provide validation for airborne mapping. ASVs can also act as data nodes for communication between UAVs and AUVs, as well as collecting data from onboard sensors, while AUVs can sample the water column vertically. This allows more accurate estimation of phytoplankton biomass and productivity, and can be used in conjunction with UAV sampling to determine air-sea flux of gases (e.g. CO2, CH4, DMS) affecting carbon budgets and atmospheric composition. In particular we describe tests in July 2013 conducted off Sesimbra, Portugal in conjunction with the Portuguese Navy by the University of Porto and MBARI with the goal of tracking large fish in the upper water column with coordinated air/surface/underwater measurements. A thermal gradient was observed in the infrared by a low flying UAV, which was used to dispatch an AUV to obtain ground truth to demonstrate the event-response capabilities using such autonomous platforms. Additional field studies in the future will facilitate integration of multiple unmanned systems into research vessel operations. The strength of hardware and software tools described in this study is to permit fundamental oceanographic measurements of both ocean

  9. InPRO: Automated Indoor Construction Progress Monitoring Using Unmanned Aerial Vehicles

    Science.gov (United States)

    Hamledari, Hesam

    In this research, an envisioned automated intelligent robotic solution for automated indoor data collection and inspection that employs a series of unmanned aerial vehicles (UAV), entitled "InPRO", is presented. InPRO consists of four stages, namely: 1) automated path planning; 2) autonomous UAV-based indoor inspection; 3) automated computer vision-based assessment of progress; and, 4) automated updating of 4D building information models (BIM). The works presented in this thesis address the third stage of InPRO. A series of computer vision-based methods that automate the assessment of construction progress using images captured at indoor sites are introduced. The proposed methods employ computer vision and machine learning techniques to detect the components of under-construction indoor partitions. In particular, framing (studs), insulation, electrical outlets, and different states of drywall sheets (installing, plastering, and painting) are automatically detected using digital images. High accuracy rates, real-time performance, and operation without a priori information are indicators of the methods' promising performance.

  10. Unmanned Aerial Vehicle Based Wireless Sensor Network for Marine-Coastal Environment Monitoring.

    Science.gov (United States)

    Trasviña-Moreno, Carlos A; Blasco, Rubén; Marco, Álvaro; Casas, Roberto; Trasviña-Castro, Armando

    2017-02-24

    Marine environments are delicate ecosystems which directly influence local climates, flora, fauna, and human activities. Their monitorization plays a key role in their preservation, which is most commonly done through the use of environmental sensing buoy networks. These devices transmit data by means of satellite communications or close-range base stations, which present several limitations and elevated infrastructure costs. Unmanned Aerial Vehicles (UAV) are another alternative for remote environmental monitoring which provide new types of data and ease of use. These aircraft are mainly used in video capture related applications, in its various light spectrums, and do not provide the same data as sensing buoys, nor can they be used for such extended periods of time. The aim of this research is to provide a flexible, easy to deploy and cost-effective Wireless Sensor Network (WSN) for monitoring marine environments. This proposal uses a UAV as a mobile data collector, low-power long-range communications and sensing buoys as part of a single WSN. A complete description of the design, development, and implementation of the various parts of this system is presented, as well as its validation in a real-world scenario.

  11. Unmanned Aerial Vehicle Based Wireless Sensor Network for Marine-Coastal Environment Monitoring

    Science.gov (United States)

    Trasviña-Moreno, Carlos A.; Blasco, Rubén; Marco, Álvaro; Casas, Roberto; Trasviña-Castro, Armando

    2017-01-01

    Marine environments are delicate ecosystems which directly influence local climates, flora, fauna, and human activities. Their monitorization plays a key role in their preservation, which is most commonly done through the use of environmental sensing buoy networks. These devices transmit data by means of satellite communications or close-range base stations, which present several limitations and elevated infrastructure costs. Unmanned Aerial Vehicles (UAV) are another alternative for remote environmental monitoring which provide new types of data and ease of use. These aircraft are mainly used in video capture related applications, in its various light spectrums, and do not provide the same data as sensing buoys, nor can they be used for such extended periods of time. The aim of this research is to provide a flexible, easy to deploy and cost-effective Wireless Sensor Network (WSN) for monitoring marine environments. This proposal uses a UAV as a mobile data collector, low-power long-range communications and sensing buoys as part of a single WSN. A complete description of the design, development, and implementation of the various parts of this system is presented, as well as its validation in a real-world scenario. PMID:28245587

  12. Automatic laser beam alignment using blob detection for an environment monitoring spectroscopy

    Science.gov (United States)

    Khidir, Jarjees; Chen, Youhua; Anderson, Gary

    2013-05-01

    This paper describes a fully automated system to align an infra-red laser beam with a small retro-reflector over a wide range of distances. The component development and test were especially used for an open-path spectrometer gas detection system. Using blob detection under OpenCV library, an automatic alignment algorithm was designed to achieve fast and accurate target detection in a complex background environment. Test results are presented to show that the proposed algorithm has been successfully applied to various target distances and environment conditions.

  13. Automatic Detection of Childhood Absence Epilepsy Seizures: Toward a Monitoring Device

    DEFF Research Database (Denmark)

    Duun-Henriksen, Jonas; Madsen, Rasmus E.; Remvig, Line S.;

    2012-01-01

    long-term prognoses, balancing antiepileptic effects and side effects. The electroencephalographic appearance of paroxysms in childhood absence epilepsy is fairly homogeneous, making it feasible to develop patient-independent automatic detection. We implemented a state-of-the-art algorithm...... to investigate the performance of paroxysm detection. Using only a single scalp electroencephalogram channel from 20 patients with a total of 125 paroxysms >2 seconds, 97.2% of paroxysms could be detected with no false detections. This result leads us to recommend further investigations of tiny, one......-channel electroencephalogram systems in an ambulatory setting....

  14. Wireless Subsurface Microsensors for Health Monitoring of Thermal Protection Systems on Hypersonic Vehicles

    Science.gov (United States)

    Milos, Frank S.; Watters, David G.; Pallix, Joan B.; Bahr, Alfred J.; Huestis, David L.; Arnold, Jim (Technical Monitor)

    2001-01-01

    Health diagnostics is an area where major improvements have been identified for potential implementation into the design of new reusable launch vehicles in order to reduce life cycle costs, to increase safety margins, and to improve mission reliability. NASA Ames is leading the effort to develop inspection and health management technologies for thermal protection systems. This paper summarizes a joint project between NASA Ames and SRI International to develop 'SensorTags,' radio frequency identification devices coupled with event-recording sensors, that can be embedded in the thermal protection system to monitor temperature or other quantities of interest. Two prototype SensorTag designs containing thermal fuses to indicate a temperature overlimit are presented and discussed.

  15. Mathematical model of unmanned aerial vehicle used for endurance autonomous monitoring

    Energy Technology Data Exchange (ETDEWEB)

    Chelaru, Teodor-Viorel, E-mail: teodor.chelaru@upb.ro [University POLITEHNICA of Bucharest - Research Center for Aeronautics and Space, Str. Gheorghe Polizu, no. 1, PC 011061, Sector 1, Bucharest (Romania); Chelaru, Adrian, E-mail: achelaru@incas.ro [INCAS -National Institute for Aerospace Research Elie Carafoli, B-dul Iuliu Maniu 220, 061126, Sector 6, Bucharest (Romania)

    2014-12-10

    The paper purpose is to present some aspects regarding the control system of unmanned aerial vehicle - UAV, used to local observations, surveillance and monitoring interest area. The calculus methodology allows a numerical simulation of UAV evolution in bad atmospheric conditions by using nonlinear model, as well as a linear one for obtaining guidance command. The UAV model which will be presented has six DOF (degrees of freedom), and autonomous control system. This theoretical development allows us to build stability matrix, command matrix and control matrix and finally to analyse the stability of autonomous UAV flight. A robust guidance system, based on uncoupled state will be evaluated for different fly conditions and the results will be presented. The flight parameters and guidance will be analysed.

  16. GSM Web-Based Centralized Remote Wireless Automatic Controlling and Monitoring of Aquafeeder

    Science.gov (United States)

    Wong, C. L.; Idris, A.; Hasan, Z.

    2016-03-01

    This project is about producing a prototype to feed fishes at fish ponds of remote location with the use of GSM mobile phone. An automatic fish feeder is an electric device that has been designed to give out the right amount of pellets at the designed time. In this project, the automatic feeder designed consists of photovoltaic solar cells that are used to generate electricity and storing it into batteries. Solar charge controllers can be used to determine the rate of which current is drawn and added from the batteries. GSM cellular communication is used to allow user to control from a distance. Commands or instructions are sent to the operating system which in return runs the servomotor and blower by blowing certain amount of fish pallets into the pond to feed the fishes. The duration of the feeding processes is fixed by the user, hence the amount of fish food pallets released are precisely the same for each time. This technology is especially useful for fish farmers where they can remotely feed their fishes.

  17. Automatized system of precipitation monitoring and recording with use of radiolocation for urban areas

    Science.gov (United States)

    Voronov, Nikolai; Dikinis, Alexandr; Ivanov, Maxim

    2016-04-01

    One of the most important lines of work in the field of increasing the efficiency of functioning of urban water disposal systems is automation of precipitation recording with application of new technological tools for measuring precipitations fallout and forecast. The developed Automatized Information System for Atmospheric Precipitation Recording (AIS «Osadki») includes a network of automatic precipitation stations on the basis of use of the precipitation gauge OTT Pluvio2; a Doppler meteorological radar; software for collection of information about precipitations and control of work of the precipitation stations network; a specialized database that provides direct access to meteorological information and statistical estimation of precipitation distribution for urban conditions. The main advantage of the System is the use of a Doppler meteorological radar which, in combination with the measurement data of the station in the automated mode with a 5-minute interval allows to estimate both the distribution of precipitations on the urban territory their intensity. As the result, it allows to drastically increase the speed of processing of hydrometeorological information and the efficiency of using it for the needs of urban services. This article was prepared within the framework of the Federal Targeted Programme for Research and Development in Priority Areas of Development of the Russian Scientific and Technological Complex for 2014-2020 (agreement № 14.574.21.0088).

  18. Online Automatic Monitoring of Ambient Air Quality Control Technology Research%环境空气自动监测在线质控技术研究

    Institute of Scientific and Technical Information of China (English)

    陈国伟

    2014-01-01

    The automatic monitoring system for ambient air monitoring, to ensure the accuracy and reliability of the monitoring data. Online quality control technology innovation automatic detection system, which can maximize their potential in the monitoring of ambient air. This paper analyzes the necessity of quality control techniques and management methods automatic ambient air monitoring; quality control methods discussed online automatic monitoring of ambient air.%利用自动监测系统对环境空气进行监测,可保证监测数据的准确性和可靠性。利用在线质控技术不断革新自动检测系统,可使其在监测环境空气时发挥最大功效。分析了质控技术对环境空气自动监测的必要性和管理方法,探讨了环境空气自动监测的在线质控方式。

  19. Minimum Hamiltonian Ascent Trajectory Evaluation (MASTRE) program (update to automatic flight trajectory design, performance prediction, and vehicle sizing for support of Shuttle and Shuttle derived vehicles) engineering manual

    Science.gov (United States)

    Lyons, J. T.

    1993-01-01

    The Minimum Hamiltonian Ascent Trajectory Evaluation (MASTRE) program and its predecessors, the ROBOT and the RAGMOP programs, have had a long history of supporting MSFC in the simulation of space boosters for the purpose of performance evaluation. The ROBOT program was used in the simulation of the Saturn 1B and Saturn 5 vehicles in the 1960's and provided the first utilization of the minimum Hamiltonian (or min-H) methodology and the steepest ascent technique to solve the optimum trajectory problem. The advent of the Space Shuttle in the 1970's and its complex airplane design required a redesign of the trajectory simulation code since aerodynamic flight and controllability were required for proper simulation. The RAGMOP program was the first attempt to incorporate the complex equations of the Space Shuttle into an optimization tool by using an optimization method based on steepest ascent techniques (but without the min-H methodology). Development of the complex partial derivatives associated with the Space Shuttle configuration and using techniques from the RAGMOP program, the ROBOT program was redesigned to incorporate these additional complexities. This redesign created the MASTRE program, which was referred to as the Minimum Hamiltonian Ascent Shuttle TRajectory Evaluation program at that time. Unique to this program were first-stage (or booster) nonlinear aerodynamics, upper-stage linear aerodynamics, engine control via moment balance, liquid and solid thrust forces, variable liquid throttling to maintain constant acceleration limits, and a total upgrade of the equations used in the forward and backward integration segments of the program. This modification of the MASTRE code has been used to simulate the new space vehicles associated with the National Launch Systems (NLS). Although not as complicated as the Space Shuttle, the simulation and analysis of the NLS vehicles required additional modifications to the MASTRE program in the areas of providing

  20. AutoSynch: An Automatic-Signal Monitor Based on Predicate Tagging

    OpenAIRE

    Hung, Wei-Lun; Vijay K Garg

    2013-01-01

    Most programming languages use monitors with explicit signals for synchronization in shared-memory programs. Requiring program- mers to signal threads explicitly results in many concurrency bugs due to missed notifications, or notifications on wrong condition variables. In this paper, we describe an implementation of an au- tomatic signaling monitor in Java called AutoSynch that eliminates such concurrency bugs by removing the burden of signaling from the programmer. We show that the belief t...

  1. Research of brain-computer interface automatic vehicle system based on SSVEP%基于SSVEP的脑-机接口自动车系统研究

    Institute of Scientific and Technical Information of China (English)

    赵丽; 孙永; 马彦臻; 何洋

    2011-01-01

    This paper mainly carried out proposes the research of SSVEP brain-computer interface automatic vehicle control systems,which describes the principles of the visual evoked potentials that used in brain-computer interface,and the single-chip is used to designs visual stimulation. Base on the LABVIEW platform, it also uses Hilbert Huang Transform to extract evoked potential vector continuously,which produces brain-computer interface control signals that can be applied to automatic vehicle control system to control the car around before and after exercise. According to a lot of experiments to verify,this sistem can send out the control commands that the correct rate is higher than 83% and can also send a command less than 5 seconds compared with the average time based on SSVEP,so it proves that the system is feasible and has a high application value.%阐述了视觉诱发电位用于脑-机接口的原理,系统采用单片机设计视觉刺激器,同时在LABVIEW平台上,利用希尔伯特黄变换实时提取诱发电位向量,产生脑机接口控制信号,并用于自动车控制系统,从而控制小车的前后左右运动.通过大量实验验证,设计的基于稳态视觉诱发电位的脑-机接口自动车控制系统,发送控制命令正确率高于83%,发送一个命令的平均时间低于5 s,证明该系统的方案是可行的,具有较高的应用价值.

  2. Development of a Two-Speed Automatic Transmission for Pure Electric Vehicle%纯电动车两挡自动变速器的研发

    Institute of Scientific and Technical Information of China (English)

    黄伟; 王耀南; 冯坤

    2011-01-01

    为了改善纯电动汽车驱动系统的性能,开发一种用于纯电动运动多功能汽车的两级自动变速器.应用速比选择原则、换挡控制策略,研究其对于整车性能的影响.仿真结果表明:设计的两挡自动变速器可降低对电机最大转矩和最高转速的需求,减少机械传动噪音,降低变速器输入转速,优化电机的工作转速区间,提高动力传动系统效率.台架试验表明:采用电机主动同步控制技术,在挡位切换过程中能减少动力中断时问,获得较好的换挡品质.%A two-speed automatic transmission used in electric sport utility vehicle was developed to improve fhe performance of the propulsion system of the vehicle.The motor active synchronization were researched using gear ratio choice principle and shift change control algorithm.Simulation results show that the two-speed automatic transmission reduces the maximum torque demand,the motor running speed and mechanical noise,and improves driveline efficiency.The bench tests show thaf the motor active synchronization control reduces the power interruption time,and helps the transmission achieve a high shifting quality.

  3. A Pure-Python Robust Frequency Band Automatic Phase Picker for Seismic Monitoring

    Science.gov (United States)

    Chen, C.; Holland, A. A.

    2013-12-01

    We modify the FPPICK algorithm of Lomax et al. (2012) and implement an automatic phase picking algorithm implemented in Python. The algorithm takes advantage of existing seismological Python libraries, Obspy. The algorithm is designed to work on a variety of instrumentation and automatically adapts to different sampling rates. The time series signals are band-pass filtered for each band, octave, considered within the picker algorithm. The energy of the signal is calculated over an averaging window and multiplied by the instantaneous energy of the signal. This energy time-series is the statistic we can then examine for each frequency band considered. The summary statistic, which allows the identification of a trigger, is simply the maximum value of any frequency bands energy statistic at each sample time. A trigger is identified by using a control chart type statistic to identify when our statistics summary is changing rapidly and exceeds a specified number of standard deviations from the mean of the summary energy statistic. This has the advantage that the picker parameters don't necessarily need to be modified when processing data from a wide variety of instrumentation with different response characteristics. The algorithm also contains a method to determine the first motion direction associated with a pick as well as an uncertainty for the pick. As with any automatic phase identification system false picks can and do occur. A few simple algorithms are implemented to avoid false-picks, the picker can be configured not to include these checks. These algorithms remove picks that occur very close in time, and picks for which a phase has a smaller RMS than the previous time interval. The algorithm uses many techniques within Numpy to improve computation times. The algorithm effectively picks both P- and S-phase from local and regional earthquakes with only small amounts of picker parameter modifications. The picker can pick both P and S phases on local and regional

  4. A Space-Time Network-Based Modeling Framework for Dynamic Unmanned Aerial Vehicle Routing in Traffic Incident Monitoring Applications

    OpenAIRE

    Jisheng Zhang; Limin Jia; Shuyun Niu; Fan Zhang; Lu Tong; Xuesong Zhou

    2015-01-01

    It is essential for transportation management centers to equip and manage a network of fixed and mobile sensors in order to quickly detect traffic incidents and further monitor the related impact areas, especially for high-impact accidents with dramatic traffic congestion propagation. As emerging small Unmanned Aerial Vehicles (UAVs) start to have a more flexible regulation environment, it is critically important to fully explore the potential for of using UAVs for monitoring recurring and no...

  5. Monitoring the urban heat island of Bucharest (Romania) through a network of automatic meteorological sensors - first results

    Science.gov (United States)

    Cheval, Sorin; Lucaschi, Bogdan; Ioja, Cristian; Dumitrescu, Alexandru; Manea, Ancuta; Radulescu, Adrian; Dumitrache, Catalin; Tudorache, George; Vanau, Gabriel; Onose, Diana

    2015-04-01

    Extreme warm temperatures and heat waves represent one of the major climate hazards which impact the city of Bucharest (Romania), favoured by the climate background and by the urban characteristics. Previous studies based either on sparse ground sensors or satellite remote sensing indicate that the average differences between the monthly temperature of the built area and the neighbouring rural buffers of Bucharest can reach 3-4°C, but instantaneous values are certainly higher. Since the city shelters about 2 million residents, as well as the major administrative and economic facilities of the country, the hazard management should receive a vivid attention. The meteorological monitoring of the city is currently performed in a systematic manner by the National Meteorological Administration (NMA) through 3 ground-based stations following the standards of the World Meteorological Organization, and through radar and satellite remote sensing. In 2014, NMA set up 7 automatic sensors in specific urban conditions, while the University of Bucharest deployed 30 mobile sensors in a joint effort for enhancing the accuracy of the urban heat island monitoring. Both sensor devices are designed for continuous monitoring (24/7). This presentation focuses on the technical characteristics of the recently implemented network (1), and brings to the public the first results of the monitoring (2), including the implementation experience, the observed benefits and plans for development and applications. The data obtained are compared with the existing data sets from meteorological stations and satellite products, and they are currently integrated in a common database, providing valuable information about the Bucharest's urban heat island. The results have been obtained within the project UCLIMESA (Urban Heat Island Monitoring under Present and Future Climate), ongoing between 2013 and 2015 in the framework of the Programme for Research-Development-Innovation for Space Technology and

  6. Developing a Satellite Based Automatic System for Crop Monitoring: Kenya's Great Rift Valley, A Case Study

    Science.gov (United States)

    Lucciani, Roberto; Laneve, Giovanni; Jahjah, Munzer; Mito, Collins

    2016-08-01

    The crop growth stage represents essential information for agricultural areas management. In this study we investigate the feasibility of a tool based on remotely sensed satellite (Landsat 8) imagery, capable of automatically classify crop fields and how much resolution enhancement based on pan-sharpening techniques and phenological information extraction, useful to create decision rules that allow to identify semantic class to assign to an object, can effectively support the classification process. Moreover we investigate the opportunity to extract vegetation health status information from remotely sensed assessment of the equivalent water thickness (EWT). Our case study is the Kenya's Great Rift valley, in this area a ground truth campaign was conducted during August 2015 in order to collect crop fields GPS measurements, leaf area index (LAI) and chlorophyll samples.

  7. Standard Practice for Sampling Gas Blow Down Systems and Components for Particulate Contamination by Automatic Particle Monitor Method

    CERN Document Server

    American Society for Testing and Materials. Philadelphia

    2008-01-01

    1.1 This practice describes how to connect, prepare, and sample pressurized gas systems (having up to 19.1-mm (0.75-in.) diameter lines) for particulate contamination by using an automatic monitor. 1.2 The values stated in MKS units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For hazard statements, see Section 5.

  8. Automatic solution for detection, identification and biomedical monitoring of a cow using remote sensing for optimised treatment of cattle

    Directory of Open Access Journals (Sweden)

    Yevgeny Beiderman

    2014-12-01

    Full Text Available In this paper we show how a novel photonic remote sensing system assembled on a robotic platform can extract vital biomedical parameters from cattle including their heart beating, breathing and chewing activity. The sensor is based upon a camera and a laser using selfinterference phenomena. The whole system intends to provide an automatic solution for detection, identification and biomedical monitoring of a cow. The detection algorithm is based upon image processing involving probability map construction. The identification algorithms involve well known image pattern recognition techniques. The sensor is used on top of an automated robotic platform in order to support animal decision making. Field tests and computer simulated results are presented.

  9. Modularity, adaptability and evolution in the AUTOPIA architecture for control of autonomous vehicles. Updating Mechatronics of Automatic Cars

    OpenAIRE

    Pérez Rastelli, Joshué; González, Carlos; Milanés, Vicente; Onieva, Enrique; Godoy, Jorge; Pedro, Teresa De

    2009-01-01

    International audience; Computer systems to carry out control algorithms on autonomous vehicles have been developed in recent years. However, the advances in peripheral devices allow connecting the actuator controllers to the control system by means of standard communication links (USB, CAN, Ethernet ... ).The goal is to permit the use of standard computers. In this paper, we present the evolution of AUTOPIA architecture and its modularity and adaptability to move the old system based on ISA ...

  10. Automatic semi-continuous accumulation chamber for diffuse gas emissions monitoring in volcanic and non-volcanic areas

    Science.gov (United States)

    Lelli, Matteo; Raco, Brunella; Norelli, Francesco; Virgili, Giorgio; Continanza, Davide

    2016-04-01

    Since various decades the accumulation chamber method is intensively used in monitoring activities of diffuse gas emissions in volcanic areas. Although some improvements have been performed in terms of sensitivity and reproducibility of the detectors, the equipment used for measurement of gas emissions temporal variation usually requires expensive and bulky equipment. The unit described in this work is a low cost, easy to install-and-manage instrument that will make possible the creation of low-cost monitoring networks. The Non-Dispersive Infrared detector used has a concentration range of 0-5% CO2, but the substitution with other detector (range 0-5000 ppm) is possible and very easy. Power supply unit has a 12V, 7Ah battery, which is recharged by a 35W solar panel (equipped with charge regulator). The control unit contains a custom programmed CPU and the remote transmission is assured by a GPRS modem. The chamber is activated by DataLogger unit, using a linear actuator between the closed position (sampling) and closed position (idle). A probe for the measure of soil temperature, soil electrical conductivity, soil volumetric water content, air pressure and air temperature is assembled on the device, which is already arranged for the connection of others external sensors, including an automatic weather station. The automatic station has been tested on the field at Lipari island (Sicily, Italy) during a period of three months, performing CO2 flux measurement (and also weather parameters), each 1 hour. The possibility to measure in semi-continuous mode, and at the same time, the gas fluxes from soil and many external parameters, helps the time series analysis aimed to the identification of gas flux anomalies due to variations in deep system (e.g. onset of volcanic crises) from those triggered by external conditions.

  11. Development of an Unmanned Aerial Vehicle-Borne Crop-Growth Monitoring System.

    Science.gov (United States)

    Ni, Jun; Yao, Lili; Zhang, Jingchao; Cao, Weixing; Zhu, Yan; Tai, Xiuxiang

    2017-03-03

    In view of the demand for a low-cost, high-throughput method for the continuous acquisition of crop growth information, this study describes a crop-growth monitoring system which uses an unmanned aerial vehicle (UAV) as an operating platform. The system is capable of real-time online acquisition of various major indexes, e.g., the normalized difference vegetation index (NDVI) of the crop canopy, ratio vegetation index (RVI), leaf nitrogen accumulation (LNA), leaf area index (LAI), and leaf dry weight (LDW). By carrying out three-dimensional numerical simulations based on computational fluid dynamics, spatial distributions were obtained for the UAV down-wash flow fields on the surface of the crop canopy. Based on the flow-field characteristics and geometrical dimensions, a UAV-borne crop-growth sensor was designed. Our field experiments show that the monitoring system has good dynamic stability and measurement accuracy over the range of operating altitudes of the sensor. The linear fitting determination coefficients (R²) for the output RVI value with respect to LNA, LAI, and LDW are 0.63, 0.69, and 0.66, respectively, and the Root-mean-square errors (RMSEs) are 1.42, 1.02 and 3.09, respectively. The equivalent figures for the output NDVI value are 0.60, 0.65, and 0.62 (LNA, LAI, and LDW, respectively) and the RMSEs are 1.44, 1.01 and 3.01, respectively.

  12. The Long-Term Settlement Deformation Automatic Monitoring System for the Chinese High-Speed Railway

    Directory of Open Access Journals (Sweden)

    Xu Wang

    2015-01-01

    Full Text Available The Beijing-Shanghai high-speed railway is one of the milestones of China’s high-speed railway development and its security plays a significant role in China’s economic and social development. However, the evaluation methods used for large-scale security operations and important infrastructure systems, such as the high-speed railways, are discrete and nonlinear; thus they cannot issue emergency warnings in a timely manner. The emergence of optical fiber sensing technology can solve this problem. This technology has progressed rapidly in its application to the monitoring of railway security and it has attracted much attention within the industry. This study considers the newly built passenger railway line between Shijiazhuang and Jinan as an example. The web-based, all-in-one fiber Bragg grating static level is described as well as a set of online monitoring systems, which is automated, real-time, remote, visual, and adaptable to the standards of the Beijing-Shanghai high-speed railway. According to our theoretical analysis, the planned automated monitoring of settlement deformation for the Beijing-Shanghai high-speed railway and the real-time analysis and calculation of monitoring data can ensure the operational security of this section of China’s high-speed railway system.

  13. A Methodology to Monitor Airborne PM10 Dust Particles Using a Small Unmanned Aerial Vehicle.

    Science.gov (United States)

    Alvarado, Miguel; Gonzalez, Felipe; Erskine, Peter; Cliff, David; Heuff, Darlene

    2017-02-14

    Throughout the process of coal extraction from surface mines, gases and particles are emitted in the form of fugitive emissions by activities such as hauling, blasting and transportation. As these emissions are diffuse in nature, estimations based upon emission factors and dispersion/advection equations need to be measured directly from the atmosphere. This paper expands upon previous research undertaken to develop a relative methodology to monitor PM10 dust particles produced by mining activities making use of small unmanned aerial vehicles (UAVs). A module sensor using a laser particle counter (OPC-N2 from Alphasense, Great Notley, Essex, UK) was tested. An aerodynamic flow experiment was undertaken to determine the position and length of a sampling probe of the sensing module. Flight tests were conducted in order to demonstrate that the sensor provided data which could be used to calculate the emission rate of a source. Emission rates are a critical variable for further predictive dispersion estimates. First, data collected by the airborne module was verified using a 5.0 m tower in which a TSI DRX 8533 (reference dust monitoring device, TSI, Shoreview, MN, USA) and a duplicate of the module sensor were installed. Second, concentration values collected by the monitoring module attached to the UAV (airborne module) obtaining a percentage error of 1.1%. Finally, emission rates from the source were calculated, with airborne data, obtaining errors as low as 1.2%. These errors are low and indicate that the readings collected with the airborne module are comparable to the TSI DRX and could be used to obtain specific emission factors from fugitive emissions for industrial activities.

  14. Practical issues in automatic 3D reconstruction and navigation applications using man-portable or vehicle-mounted sensors

    Science.gov (United States)

    Harris, Chris; Stennett, Carl

    2012-09-01

    The navigation of an autonomous robot vehicle and person localisation in the absence of GPS both rely on using local sensors to build a model of the 3D environment. Accomplishing such capabilities is not straightforward - there are many choices to be made of sensor and processing algorithms. Roke Manor Research has broad experience in this field, gained from building and characterising real-time systems that operate in the real world. This includes developing localization for planetary and indoor rovers, model building of indoor and outdoor environments, and most recently, the building of texture-mapped 3D surface models.

  15. Automatic data-quality monitoring for continuous GPS tracking stations in Taiwan

    Science.gov (United States)

    Yeh, T. K.; Wang, C. S.; Chao, B. F.; Chen, C. S.; Lee, C. W.

    2007-10-01

    Taiwan has more than 300 Global Positioning System (GPS) tracking stations maintained by the Ministry of the Interior (MOI), Academia Sinica, the Central Weather Bureau and the Central Geological Survey. In the future, GPS tracking stations may replace the GPS control points after being given a legal status. Hence, the data quality of the tracking stations is an increasingly significant factor. This study considers the feasibility of establishing a system for monitoring GPS receivers. This investigation employs many data-quality indices and examines the relationship of these indices and the positioning precision. The frequency stability of the GPS receiver is the most important index; the cycle slip is the second index and the multipath is the third index. An auto-analytical system for analysing GPS data quality and monitoring the MOI's tracking stations can quickly find and resolve problems, or changes in station environment, to maintain high data quality for the tracking stations.

  16. Automatic underwater radiotelemetry system to monitor temperature responses of fish in a freshwater environment

    Energy Technology Data Exchange (ETDEWEB)

    Prepejchal, W.; Thommes, M.M.; Spigarelli, S.A.; Haumann, J.R.; Hess, P.E.

    1980-11-01

    An automated radiotelemetry system developed to monitor body and water temperature of free-swimming fish is described. The receiving and data acquisition unit can be programmed to monitor as many as 16 transmitters (fish); each transmitter can time-multiply data from up to 9 resistive transducers. A typical transmitter with saddle-type attachment, suitable for fish weighing 1 to over 10 kg, has a submerged weight of less than 10 g. The typical range is 2700 m for fish 1 m below the surface. Complete schematics and operational logic are provided for the receiver and data processing printed circuit boards, for 3 types of fish transmitters, and for an environmental parameter monitor. Construction methods, calibration and tagging procedures, and the required computer programs are detailed. This system was in operation for 3 years at the Point Beach Nuclear Power Plant, Two Creeks, Wisconsin. Of the 89 fish tagged, 77 fish provided useable body and water temperature information with tracking times ranging from 0.5 to 505 hours. Modifications which would further improve the system's reliability are discussed.

  17. Design of Wireless Sensor Network-Based Greenhouse Environment Monitoring and Automatic Control System

    Directory of Open Access Journals (Sweden)

    Yongxian Song

    2012-05-01

    Full Text Available  In view of the characteristics of greenhouse environment monitoring system, a system scheme based on wireless sensor network (WSN is presented, which adopts Atmega128L chip and CC2530 that is a low power RF chip from TI to design the sink node and sensor nodes in the WSN. The monitoring and management center can control the temperature and humidity of the greenhouse, measure the carbon dioxide content, and collect the information about intensity of illumination, and so on. And the system adopts multilevel energy memory. It combines energy management with energy transfer, which makes the energy collected by solar energy batteries be used reasonably. Therefore, the self-managing energy supply system is established. In addition, the nodes deployment method and time synchronization problem are analyzed in detail. The system can solve the problem of complex cabling with the advantages of low power consumption, low cost, good robustness, extended flexible and high reliability. An effective tool is provided for monitoring and analysis decision-making of the greenhouse environment.

  18. Determination of molecular weight and other characteristics of co- and terpolymers using automatic continuous online monitoring of polymerization reactions (ACOMP)

    Science.gov (United States)

    Enohnyaket, Pascal E. A.

    The Automatic Continuous Online Monitoring of Polymerization reactions (ACOMP), is a technique developed by the Reed Research Group at Tulane University. By simultaneously monitoring and combining signals from a continuously dilute reactor stream, detectors such as a multi-angle light scattering detector, near infra-red spectrometer, viscometer, differential refractive index, and a full wavelength UV/Visible detector were used in a model-independent fashion to follow the weight-average molecular weight, intrinsic viscosity, the concentrations of each comonomer, and hence the evolution of the average instantaneous and cumulative compositions along the chains as comonomers are consumed. The goal of this dissertation is to make the ACOMP system more useful in very complex polymerization situations by improving it with additional detectors and formalisms (such as a new expression for computing the molecular weight a copolymer of nth degree) and to exploit its robustness in situations where traditional routes fail or are of limited value. By providing a continuum of data, ACOMP allows polymer scientists to better understand and control new reaction schemes. At the pilot plant, it can be used to optimize reaction conditions. Because the ACOMP system is relatively cheap, user friendly, can be environmentally friendly, less bulky and very efficient, it is my desire to use ACOMP to solve some of the problems in the petroleum, plastic and drug manufacturing industries in Cameroon (and Africa).

  19. Automatic Condition Monitoring of Industrial Rolling-Element Bearings Using Motor’s Vibration and Current Analysis

    Directory of Open Access Journals (Sweden)

    Zhenyu Yang

    2015-01-01

    Full Text Available An automatic condition monitoring for a class of industrial rolling-element bearings is developed based on the vibration as well as stator current analysis. The considered fault scenarios include a single-point defect, multiple-point defects, and a type of distributed defect. Motivated by the potential commercialization, the developed system is promoted mainly using off-the-shelf techniques, that is, the high-frequency resonance technique with envelope detection and the average of short-time Fourier transform. In order to test the flexibility and robustness, the monitoring performance is extensively studied under diverse operating conditions: different sensor locations, motor speeds, loading conditions, and data samples from different time segments. The experimental results showed the powerful capability of vibration analysis in the bearing point defect fault diagnosis. The current analysis also showed a moderate capability in diagnosis of point defect faults depending on the type of fault, severity of the fault, and the operational condition. The temporal feature indicated a feasibility to detect generalized roughness fault. The practical issues, such as deviations of predicted characteristic frequencies, sideband effects, time-average of spectra, and selection of fault index and thresholds, are also discussed. The experimental work shows a huge potential to use some simple methods for successful diagnosis of industrial bearing systems.

  20. 车辆GPS监控数据的自适应采集算法研究%Study on Adaptive Collecting Algorithm of Vehicle GPS Monitoring Data

    Institute of Scientific and Technical Information of China (English)

    韩小刚; 晏磊; 陆忞

    2011-01-01

    In large-scale high precision vehicle monitoring with GPS, the communication between the server and terminals is extremely frequent,and data processing load is heavy. In order to solve this problem,an adaptive collecting algorithm of vehicle GPS monitoring data is proposed in this paper. The algorithm is designed considering three aspects: expresses vehicle speed function by polynomial fitting based on constraints of endpoint speed and travel distance, takes both situations of the terminal with a map and without a map into account,and uses deviation distance to indicate the direction deviation of speed. Based on the theories above, the adaptive data collecting algorithm is established so that GPS data is sent adaptively from terminals and recovered in the server automatically. Also performance evaluating indicators of the algorithm is discussed. Finally, the algorithm is validated based on the real road network and measured GPS monitoring data of Beijing. The experiment shows that the recovered data has a good approximation in speed and position,and the compression rate of GPS data reaches 3% ,which proves the effectiveness of the algorithm. Further research should be conducted to optimize the speed function, explore higher order polynomial function or other speed expression, to improve the accuracy and data compression rate in adaptive GPS data collection.%在大规模GPS车辆监控中,当精度要求高时终端与中心端的通信负荷及中心端的数据处理负荷都很大,自适应采集技术可以有效解决这一问题.该文提出了车辆GPS监控数据的自适应采集算法,采用基于端点速度约束和里程约束的拟合多项式表达速度函数,综合考虑终端有地图和无地图的情况,采用偏差距离表示速度的方向偏差,并提出了数据的恢复算法、算法评价指标以及算法的应用模式.最后基于北京市的真实路网和实测GPS数据对算法进行了验证,恢复后的数据在速度和位置

  1. Development and calibration of automatic real-time environmental radioactivity monitors using gamma-ray spectrometry

    OpenAIRE

    Casanovas Alegre, Ramon

    2014-01-01

    Esta tesis doctoral presenta una colección de seis artículos científicos, que han estado publicados en revistas científicas revisadas, en el campo de la detección de radiactividad ambiental en tiempo real. Después de las contribuciones de esta tesis, la red automática de vigilancia radiológica ambiental en tiempo real de Cataluña dispone de nueva y mejor información radiológica. Esto ha sido logrado gracias al desarrollo y calibración de tres tipos de monitores de radiactividad mediante espec...

  2. Automatic Threshold Setting and Its Uncertainty Quantification in Wind Turbine Condition Monitoring System

    DEFF Research Database (Denmark)

    Marhadi, Kun Saptohartyadi; Skrimpas, Georgios Alexandros

    2015-01-01

    Setting optimal alarm thresholds in vibration based condition monitoring system is inherently difficult. There are no established thresholds for many vibration based measurements. Most of the time, the thresholds are set based on statistics of the collected data available. Often times...... not represent the whole operating conditions of a turbine, which results in uncertainty in the parameters of the fitted probability distribution and the thresholds calculated. In this study, Johnson, Normal, and Weibull distributions are investigated; which distribution can best fit vibration data collected...

  3. Using Johnson Distribution for Automatic Threshold Setting in Wind Turbine Condition Monitoring System

    DEFF Research Database (Denmark)

    Marhadi, Kun Saptohartyadi; Skrimpas, Georgios Alexandros

    2014-01-01

    Setting optimal alarm thresholds in vibration based condition monitoring system is inherently difficult. There are no es- tablished thresholds for many vibration based measurements. Most of the time, the thresholds are set based on statistics of the collected data available. Often times...... not rep- resent the whole operating conditions of a turbine, which re- sults in uncertainty in the parameters of the fitted probabil- ity distribution and the thresholds calculated. In this study Johnson distribution is used to identify shape, location, and scale parameters of distribution that can best...

  4. The interplay between uncertainty monitoring and working memory: Can metacognition become automatic?

    Science.gov (United States)

    Coutinho, Mariana V C; Redford, Joshua S; Church, Barbara A; Zakrzewski, Alexandria C; Couchman, Justin J; Smith, J David

    2015-10-01

    The uncertainty response has grounded the study of metacognition in nonhuman animals. Recent research has explored the processes supporting uncertainty monitoring in monkeys. It has revealed that uncertainty responding, in contrast to perceptual responding, depends on significant working memory resources. The aim of the present study was to expand this research by examining whether uncertainty monitoring is also working memory demanding in humans. To explore this issue, human participants were tested with or without a cognitive load on a psychophysical discrimination task that included either an uncertainty response (allowing the participant to decline difficult trials) or a middle-perceptual response (labeling the same intermediate trial levels). The results demonstrated that cognitive load reduced uncertainty responding, but increased middle responding. However, this dissociation between uncertainty and middle responding was only observed when participants either lacked training or had very little training with the uncertainty response. If more training was provided, the effect of load was small. These results suggest that uncertainty responding is resource demanding, but with sufficient training, human participants can respond to uncertainty either by using minimal working memory resources or by effectively sharing resources. These results are discussed in relation to the literature on animal and human metacognition.

  5. Wireless Subsurface Sensors for Health Monitoring of Thermal Protection Systems on Hypersonic Vehicles

    Science.gov (United States)

    Milos, Frank S.; Arnold, Jim (Technical Monitor)

    2001-01-01

    Health diagnostics is an area where major improvements have been identified for potential implementation into the design of new reusable launch vehicles (RLVs) in order to reduce life cycle costs, to increase safety margins, and to improve mission reliability. NASA Ames is leading the effort to develop inspection and health management technologies for thermal protection systems. This paper summarizes a joint project between NASA Ames and industry partners to develop "wireless" devices that can be embedded in the thermal protection system to monitor temperature or other quantities of interest. These devices are sensors integrated with radio-frequency identification (RFID) microchips to enable non-contact communication of sensor data to an external reader that may be a hand-held scanner or a large portal. Both passive and active prototype devices have been developed. The passive device uses a thermal fuse to indicate the occurrence of excessive temperature. This device has a diameter under 0.13 cm. (suitable for placement in gaps between ceramic TPS tiles on an RLV) and can withstand 370 C for 15 minutes. The active device contains a small battery to provide power to a thermocouple for recording a temperature history during flight. The bulk of the device must be placed beneath the TPS for protection from high temperature, but the thermocouple can be placed in a hot location such as near the external surface.

  6. Unmanned Aerial Vehicles (UAVs) and Artificial Intelligence Revolutionizing Wildlife Monitoring and Conservation.

    Science.gov (United States)

    Gonzalez, Luis F; Montes, Glen A; Puig, Eduard; Johnson, Sandra; Mengersen, Kerrie; Gaston, Kevin J

    2016-01-14

    Surveying threatened and invasive species to obtain accurate population estimates is an important but challenging task that requires a considerable investment in time and resources. Estimates using existing ground-based monitoring techniques, such as camera traps and surveys performed on foot, are known to be resource intensive, potentially inaccurate and imprecise, and difficult to validate. Recent developments in unmanned aerial vehicles (UAV), artificial intelligence and miniaturized thermal imaging systems represent a new opportunity for wildlife experts to inexpensively survey relatively large areas. The system presented in this paper includes thermal image acquisition as well as a video processing pipeline to perform object detection, classification and tracking of wildlife in forest or open areas. The system is tested on thermal video data from ground based and test flight footage, and is found to be able to detect all the target wildlife located in the surveyed area. The system is flexible in that the user can readily define the types of objects to classify and the object characteristics that should be considered during classification.

  7. REAL-TIME MONITORING SYSTEM USING UNMANNED AERIAL VEHICLE INTEGRATED WITH SENSOR OBSERVATION SERVICE

    Directory of Open Access Journals (Sweden)

    A. Witayangkurn

    2012-09-01

    Full Text Available The Unmanned Aerial Vehicle (UAV is an emerging technology being adapted for a wide range of applications. Real-time monitoring is essential to enhance the effectiveness of UAV applications. Sensor networks are networks constructed from various sensor nodes. International standard such as OGC's SOS (Sensor Observation Service makes it possible to share sensor data with other systems as well as to provide accessibility to globally distributed users. In this paper, we propose a system combining UAV technology and sensor network technology to use an UAV as a mobile node of sensor network so that the sensor data from UAV is published and shared real-time. A UAV can extend the observation range of a sensor network to remote areas where it is usually difficult to access such as disaster area. We constructed a UAV system using remote-controlled helicopter and various sensors such as GPS, gyrocompass, laser range finder, Digital camera and Thermometer. Furthermore, we extended the Sensor Observation Service (SOS and Sensor Service Grid (SSG to support mobile sensor nodes. Then, we conducted experiments of flying the helicopter over an area of the interest. During the flight, the system measured environmental data using its sensors and captured images of the ground. The data was sent to a SOS node as the ground station via Wi-Fi which was published using SSG to give real- time access to globally distributed users.

  8. Unmanned Aerial Vehicles (UAVs and Artificial Intelligence Revolutionizing Wildlife Monitoring and Conservation

    Directory of Open Access Journals (Sweden)

    Luis F. Gonzalez

    2016-01-01

    Full Text Available Surveying threatened and invasive species to obtain accurate population estimates is an important but challenging task that requires a considerable investment in time and resources. Estimates using existing ground-based monitoring techniques, such as camera traps and surveys performed on foot, are known to be resource intensive, potentially inaccurate and imprecise, and difficult to validate. Recent developments in unmanned aerial vehicles (UAV, artificial intelligence and miniaturized thermal imaging systems represent a new opportunity for wildlife experts to inexpensively survey relatively large areas. The system presented in this paper includes thermal image acquisition as well as a video processing pipeline to perform object detection, classification and tracking of wildlife in forest or open areas. The system is tested on thermal video data from ground based and test flight footage, and is found to be able to detect all the target wildlife located in the surveyed area. The system is flexible in that the user can readily define the types of objects to classify and the object characteristics that should be considered during classification.

  9. Assessment of Unmanned Aerial Vehicles Imagery for Quantitative Monitoring of Wheat Crop in Small Plots

    Directory of Open Access Journals (Sweden)

    Frédéric Baret

    2008-05-01

    Full Text Available This paper outlines how light Unmanned Aerial Vehicles (UAV can be used in remote sensing for precision farming. It focuses on the combination of simple digital photographic cameras with spectral filters, designed to provide multispectral images in the visible and near-infrared domains. In 2005, these instruments were fitted to powered glider and parachute, and flown at six dates staggered over the crop season. We monitored ten varieties of wheat, grown in trial micro-plots in the South-West of France. For each date, we acquired multiple views in four spectral bands corresponding to blue, green, red, and near-infrared. We then performed accurate corrections of image vignetting, geometric distortions, and radiometric bidirectional effects. Afterwards, we derived for each experimental micro-plot several vegetation indexes relevant for vegetation analyses. Finally, we sought relationships between these indexes and field-measured biophysical parameters, both generic and date-specific. Therefore, we established a robust and stable generic relationship between, in one hand, leaf area index and NDVI and, in the other hand, nitrogen uptake and GNDVI. Due to a high amount of noise in the data, it was not possible to obtain a more accurate model for each date independently. A validation protocol showed that we could expect a precision level of 15% in the biophysical parameters estimation while using these relationships.

  10. Monitoring and Automatic Control for Ship Power Plants Based Logical Algorithms

    Directory of Open Access Journals (Sweden)

    Mahmoud Mohammad Salem Al-suod

    2014-12-01

    Full Text Available Controlling power station systems with diesel engines is vital issue. Algorithms of microprocessors are developed to be used in the control unit of this type of power station systems. Such Algorithms are built in a logic form, and then the control functions are derived using logic functions. Analyzing the contents of the received logic signals allows us to overcome structural redundancy of the systems. Monitor the network parameter is very important to protect the devices used in the power station systems. In this paper automated controller is developed using microprocessor algorithms to view and control the parameters of the system devices such as generator, synchronizers, and load sharers on-line, this will help in improving the system to be fast, reliable and more accurate. This paper proposes an implementation of a subsequent optimization for structural and algorithmic blocks of microprocessor systems automation of ship power plants.

  11. 环境空气自动监测质量控制的探讨%Discussion on Quality Control of Automatic Environmental Air Monitoring

    Institute of Scientific and Technical Information of China (English)

    黄国坚

    2015-01-01

    对环境空气自动监测质量控制、环境空气自动监测网络建设情况及监测过程中存在的问题展开了探讨,并结合具体实例分析,提出了一些相应的对策和建议,以期为有关方面的需要提供有益的参考和借鉴。%The environmental air automatic monitoring quality control, environmental air automatic monitoring network construction and monitoring process in the presence of problems discussed, and combined with the concrete instance analysis proposed some corresponding countermeasures and suggestions, in order to the need for relevant provides beneficial reference and reference.

  12. The continuous automatic monitoring network installed in Tuscany (Italy) since late 2002, to study earthquake precursory phenomena

    Science.gov (United States)

    Pierotti, Lisa; Cioni, Roberto

    2010-05-01

    Since late 2002, a continuous automatic monitoring network (CAMN) was designed, built and installed in Tuscany (Italy), in order to investigate and define the geochemical response of the aquifers to the local seismic activity. The purpose of the investigation was to identify eventual earthquake precursors. The CAMN is constituted by two groups of five measurement stations each. A first group has been installed in the Serchio and Magra graben (Garfagnana and Lunigiana Valleys, Northern Tuscany), while the second one, in the area of Mt. Amiata (Southern Tuscany), an extinct volcano. Garfagnana, Lunigiana and Mt. Amiata regions belong to the inner zone of the Northern Apennine fold-and-thrust belt. This zone has been involved in the post-collision extensional tectonics since the Upper Miocene-Pliocene. Such tectonic activity has produced horst and graben structures oriented from N-S to NW-SE that are transferred by NE-SW system. Both Garfagnana (Serchio graben) and Lunigiana (Magra graben) belong to the most inner sector of the belt where the seismic sources, responsible for the strongest earthquakes of the northern Apennine, are located (e.g. the M=6.5 earthquake of September 1920). The extensional processes in southern Tuscany have been accompanied by magmatic activity since the Upper Miocene, developing effusive and intrusive products traditionally attributed to the so-called Tuscan Magmatic Province. Mt. Amiata, whose magmatic activity ceased about 0.3 M.y. ago, belongs to the extensive Tyrrhenian sector that is characterized by high heat flow and crustal thinning. The whole zone is characterized by wide-spread but moderate seismicity (the maximum recorded magnitude has been 5.1 with epicentre in Piancastagnaio, 1919). The extensional regime in both the Garfagnana-Lunigiana and Mt. Amiata area is confirmed by the focal mechanisms of recent earthquakes. An essential phase of the monitoring activities has been the selection of suitable sites for the installation of

  13. Drones at the Beach - Surf Zone Monitoring Using Rotary Wing Unmanned Aerial Vehicles

    Science.gov (United States)

    Rynne, P.; Brouwer, R.; de Schipper, M. A.; Graham, F.; Reniers, A.; MacMahan, J. H.

    2014-12-01

    We investigate the potential of rotary wing Unmanned Aerial Vehicles (UAVs) to monitor the surf zone. In recent years, the arrival of lightweight, high-capacity batteries, low-power electronics and compact high-definition cameras has driven the development of commercially available UAVs for hobbyists. Moreover, the low operation costs have increased their potential for scientific research as these UAVs are extremely flexible surveying platforms. The UAVs can fly for ~12 min with a mean loiter radius of 1 - 3.5 m and a mean loiter error of 0.75 - 4.5 m, depending on the environmental conditions, flying style, battery type and vehicle type. Our experiments using multiple, alternating UAVs show that it is possible to have near continuous imagery data with similar Fields Of View. The images obtained from the UAVs (Fig. 1a), and in combination with surveyed Ground Control Points (GCPs) (Fig. 1b, red squares and white circles), can be geo-rectified (Fig. 1c) to pixel resolution between 0.01 - 1 m and a reprojection error, i.e. the difference between the surveyed GPS location of a GCP and the location of the GCP obtained from the geo-rectified image, of O(1 m). These geo-rectified images provide data on a variety of coastal aspects, such as beach width (Wb(x,t)), surf zone width (Wsf(x,t)), wave breaking location (rectangle B), beach usage (circle C) and location of dune vegegation (rectangle D), amongst others. Additionally, the possibility to have consecutive, high frequency (up to 2 Hz) rectified images makes the UAVs a great data instrument for spatially and temporally variable systems, such as the surf zone. Our first observations with the UAVs reveal the potential to quickly obtain surf zone and beach characteristics in response to storms or for day to day beach information, as well as the scientific pursuits of surf zone kinematics on different spatial and temporal scales, and dispersion and advection estimates of pollutants/dye. A selection of findings from

  14. Optimal Line Pressure Control for an Automatic Transmission-Based Parallel Hybrid Electric Vehicle considering Mode Change and Gear Shift

    Directory of Open Access Journals (Sweden)

    Minseok Song

    2014-05-01

    Full Text Available An optimal line pressure control algorithm was proposed for the fuel economy improvement of an AT-based parallel hybrid electric vehicle (HEV. By performing lever analysis at each gear step, the required line pressure was obtained considering the torque ratio of the friction elements. In addition, the required line pressure of the mode clutch was calculated. Based on these results, the optimal line pressure map at each gear step of the EV and HEV modes was presented. Using the line pressure map, an optimal line pressure was performed for the AT input torque and mode. To investigate the proposed line pressure control algorithm, a HEV performance simulator was developed based on the powertrain model of the target HEV, and fuel economy improvement was evaluated. Simulation results showed that as the gear step became higher, the optimal line pressure control could reduce the hydraulic power loss, which gave a 2.2% fuel economy improvement compared to the existing line pressure control for the FTP-72 mode.

  15. High-Resolution, Semi-Automatic Fault Mapping Using Umanned Aerial Vehicles and Computer Vision: Mapping from an Armchair

    Science.gov (United States)

    Micklethwaite, S.; Vasuki, Y.; Turner, D.; Kovesi, P.; Holden, E.; Lucieer, A.

    2012-12-01

    Our ability to characterise fractures depends upon the accuracy and precision of field techniques, as well as the quantity of data that can be collected. Unmanned Aerial Vehicles (UAVs; otherwise known as "drones") and photogrammetry, provide exciting new opportunities for the accurate mapping of fracture networks, over large surface areas. We use a highly stable, 8 rotor, UAV platform (Oktokopter) with a digital SLR camera and the Structure-from-Motion computer vision technique, to generate point clouds, wireframes, digital elevation models and orthorectified photo mosaics. Furthermore, new image analysis methods such as phase congruency are applied to the data to semiautomatically map fault networks. A case study is provided of intersecting fault networks and associated damage, from Piccaninny Point in Tasmania, Australia. Outcrops >1 km in length can be surveyed in a single 5-10 minute flight, with pixel resolution ~1 cm. Centimetre scale precision can be achieved when selected ground control points are measured using a total station. These techniques have the potential to provide rapid, ultra-high resolution mapping of fracture networks, from many different lithologies; enabling us to more accurately assess the "fit" of observed data relative to model predictions, over a wide range of boundary conditions.igh resolution DEM of faulted outcrop (Piccaninny Point, Tasmania) generated using the Oktokopter UAV (inset) and photogrammetric techniques.

  16. Monitoring drip water isotope and element variability: A new device for automatic drip water collection

    Science.gov (United States)

    Breitenbach, S. F. M.; Gilbert, M.-J.; Kwiecien, O.; Seifert, R.; Fleitmann, D.

    2012-04-01

    Understanding cave drip water elemental and stable isotope composition (δD and δ18O) are vital for interpreting climate proxy records derived from stalagmites as palaeoclimate archives. Delineating the temporal changes in drip water chemistry to climatic and environmental fluctuations (such as rainfall amount, degassing, bioactivity etc.) is even more important if calibration is attempted between climatic parameters and stalagmite proxy records. Monitoring of remote study sites has often been limited by the ability to regularly and manually collect drip water samples over an extended period of time. One important complication to be considered for stable isotope analysis is that sampling vials must be closed air-tight, in order to avoid post-sampling evaporation of the sampled water. To overcome these limitations we developed an automated and programmable sampling device that can collect 12 ml of drip water at pre-defined time intervals. A total of 49 samples can be collected in a turret over a period of up to one year. The device is powered by widely available C-cell batteries and works in cave environments with positive air temperature. The autosampler has been installed and tested in Waldheim Cave, Switzerland, where we collected water at 24h intervals. We present preliminary data for the winter period December 2011 to March 2012.

  17. Economic comparison of two types of automatic water-quality monitors

    Science.gov (United States)

    Katzenbach, Max

    1988-01-01

    A comparison of the U.S. Geological Survey's minimonitor system with a self-contained, 'package-sensor' system indicates that the package-sensor system requires less servicing time. The U.S. Geological Survey minimonitor is powered by an external battery and is housed in a weatherproof shelter. This instrument measures temperature, specific conductance, dissolved oxygen, and pH by means of sensors with extension cables having underewater connectors; data are recorder in binary coded decimal form on a 16-channel punched-paper-tape recorder that is housed in a shelter. The packaged-sensor system also measures temperature, specific conductanoe,dissolved oxygen, and pH by means of sensors housed in a package that is submerged in the stream. It has an internal power supply, no moving parts, anf does not require a weatherproof shelter; data are stored in solid-state memory. Minimonitors were installed at four sites in Ohio where U.S. Geological Survey flowthrough monitors already were in opertion. Two package-sensor systems also assigned to each site and alternated every 2 weeks. Detailed records were kept of (1) time involved in operation and maintenace of the systems, and (2) equipment problems during the test period, which lasted from October 1985 through September 1986. Equipment costs were not considered in the economic evaluation. Results of the comparisons show that the packaged-sensor system required less time to install, operate, and maintain than the minimonitor system.

  18. Distributed Multi-Level Supervision to Effectively Monitor the Operations of a Fleet of Autonomous Vehicles in Agricultural Tasks

    Directory of Open Access Journals (Sweden)

    Jesús Conesa-Muñoz

    2015-03-01

    Full Text Available This paper describes a supervisor system for monitoring the operation of automated agricultural vehicles. The system analyses all of the information provided by the sensors and subsystems on the vehicles in real time and notifies the user when a failure or potentially dangerous situation is detected. In some situations, it is even able to execute a neutralising protocol to remedy the failure. The system is based on a distributed and multi-level architecture that divides the supervision into different subsystems, allowing for better management of the detection and repair of failures. The proposed supervision system was developed to perform well in several scenarios, such as spraying canopy treatments against insects and diseases and selective weed treatments, by either spraying herbicide or burning pests with a mechanical-thermal actuator. Results are presented for selective weed treatment by the spraying of herbicide. The system successfully supervised the task; it detected failures such as service disruptions, incorrect working speeds, incorrect implement states, and potential collisions. Moreover, the system was able to prevent collisions between vehicles by taking action to avoid intersecting trajectories. The results show that the proposed system is a highly useful tool for managing fleets of autonomous vehicles. In particular, it can be used to manage agricultural vehicles during treatment operations.

  19. Distributed Multi-Level Supervision to Effectively Monitor the Operations of a Fleet of Autonomous Vehicles in Agricultural Tasks

    Science.gov (United States)

    Conesa-Muñoz, Jesús; Gonzalez-de-Soto, Mariano; Gonzalez-de-Santos, Pablo; Ribeiro, Angela

    2015-01-01

    This paper describes a supervisor system for monitoring the operation of automated agricultural vehicles. The system analyses all of the information provided by the sensors and subsystems on the vehicles in real time and notifies the user when a failure or potentially dangerous situation is detected. In some situations, it is even able to execute a neutralising protocol to remedy the failure. The system is based on a distributed and multi-level architecture that divides the supervision into different subsystems, allowing for better management of the detection and repair of failures. The proposed supervision system was developed to perform well in several scenarios, such as spraying canopy treatments against insects and diseases and selective weed treatments, by either spraying herbicide or burning pests with a mechanical-thermal actuator. Results are presented for selective weed treatment by the spraying of herbicide. The system successfully supervised the task; it detected failures such as service disruptions, incorrect working speeds, incorrect implement states, and potential collisions. Moreover, the system was able to prevent collisions between vehicles by taking action to avoid intersecting trajectories. The results show that the proposed system is a highly useful tool for managing fleets of autonomous vehicles. In particular, it can be used to manage agricultural vehicles during treatment operations. PMID:25751079

  20. Study of structure of marine specialist activity in an ergative system on monitoring and managing automatic control parameters of safe navigation process

    Directory of Open Access Journals (Sweden)

    Kholichev S. N.

    2016-12-01

    Full Text Available The study of structures' common features and dynamics of the technical object tuning circuit performing automatic adjustment of safe navigation options has been conducted for the first time in the theory of ergative systems. The research of the structure and process of ergative system functioning including an automatic control system with the option of safe navigation conditions has been fulfilled. The function of signals' selection performing optimal control law reconfiguration of the mentioned system has been given, and some sequence of marine specialist activities allowing solve the problem of navigation safety has been composed. The ergative system retargeted by the ship specialist has a two-tier hierarchy. The first level is an automatic control of the safe navigation parameter, and the second is the level of reconfiguration where the ship specialist changes the parameters of regulation act. The two-level hierarchical representation of the ergative navigation security settings management system makes it possible to introduce the concept of reconfiguration of regulation level as ship specialist activity which is to reduce the uncertainty in the environment in the operation of this layer. Such a reduction can be achieved as a result of exposure to the upper level associated with ideas of the ship specialist on the regulation of safe navigation parameters of the vessel on the lower level – the level of direct control automatic safe navigation option. As a result of studying the activities of the ship specialist in the ergative system on monitoring and managing automatic control parameters of safe navigation process it has been found that the main task of the ship specialist in the operation within the ergative system ensuring the navigation safety is to monitor the input and output of the automatic control system, decisions on the choice of reconfiguration laws regulating signal on the basis of information about deviations and the

  1. Security and Hyper-accurate Positioning Monitoring with Automatic Dependent Surveillance-Broadcast (ADS-B) Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Lightning Ridge Technologies, working in collaboration with The Innovation Laboratory, Inc., extend Automatic Dependent Surveillance Broadcast (ADS-B) into a safe,...

  2. Security and Hyper-accurate Positioning Monitoring with Automatic Dependent Surveillance-Broadcast (ADS-B) Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Lightning Ridge Technologies, LLC, working in collaboration with The Innovation Laboratory, Inc., extend Automatic Dependent Surveillance ? Broadcast (ADS-B) into a...

  3. 空客A320系列飞机APS3200型APU自动关车故障分析%Failure Analysis of APS3200 Type APU Automatic Vehicle Shutdown of the Airbus A320 Series

    Institute of Scientific and Technical Information of China (English)

    张绪勤

    2016-01-01

    In this paper, by analyzing the troubleshooting process of APS3200 Type APU Automatic Vehicle Shutdown of the Airbus A320 Series occurring repeatedly, it proposed troubleshooting and maintenance tips to the APU shutdown automatic vehicle shutdown appearing in the operation of the aircraft power supply switching.%本文通过对空客A320系列飞机APS3200型APU反复出现自动关车故障的排故过程进行分析,对飞机运行中供电切换时出现APU自动关车现象提出排故建议和维护提示。

  4. A Modern Automatic Chamber Technique as a Powerful Tool for CH4 and CO2 Flux Monitoring

    Science.gov (United States)

    Mastepanov, M.; Christensen, T. R.; Lund, M.; Pirk, N.

    2014-12-01

    A number of similar systems were used for monitoring of CH4 and CO2 exchange by the automatic chamber method in a range of different ecosystems. The measurements were carried out in northern Sweden (mountain birch forest near Abisko, 68°N, 2004-2010), southern Sweden (forest bog near Hässleholm, 56°N, 2007-2014), northeastern Greenland (arctic fen in Zackenberg valley, 74°N, 2005-2014), southwestern Greenland (fen near Nuuk, 64°N, 2007-2014), central Svalbard (arctic fen near Longyearbyen, 78°N, 2011-2014). Those in total 37 seasons of measurements delivered not only a large amount of valuable flux data, including a few novel findings (Mastepanov et al., Nature, 2008; Mastepanov et al., Biogeosciences, 2013), but also valuable experience with implementation of the automatic chamber technique using modern analytical instruments and computer technologies. A range of high resolution CH4 analysers (DLT-100, FMA, FGGA - Los Gatos Research), CO2 analyzers (EGM-4, SBA-4 - PP Systems; Li-820 - Li-Cor Biosciences), as well as Methane Carbon Isotope Analyzer (Los Gatos Research) has shown to be suitable for precise measurements of fluxes, from as low as 0.1 mg CH4 m-1 d-1 (wintertime measurements at Zackenberg, unpublished) to as high as 2.4 g CH4 m-1 d-1 (autumn burst 2007 at Zackenberg, Mastepanov et al., Nature, 2008). Some of these instruments had to be customized to accommodate 24/7 operation in harsh arctic conditions. In this presentation we will explain some of these customizations. High frequency of concentration measurements (1 Hz in most cases) provides a unique opportunity for quality control of flux calculations; on the other hand, this enormous amount of data can be analyzed only using highly automated algorithms. A specialized software package was developed and improved through the years of measurements and data processing. This software automates the data flow from raw concentration data of different instruments and sensors and various status records

  5. 自动化监测手段在炼焦生产中的应用%Application of automatic monitoring incoking produc iton

    Institute of Scientific and Technical Information of China (English)

    杨晓坤

    2015-01-01

    This paper introduces the application of automatic monitoring method in the fields of online monitoring of toxic, harmful and combustible gas, automatic recording of pushing, infrared thermometry and counting of stamping hammers.Good results have been achieved and the automation level of production is improved.%介绍了自动化监测手段应用于在线监测有毒有害可燃气体、推焦自动记录、红外线测温、统计捣固锤数等领域,取得了良好效果,提高了生产过程的自动化水平。

  6. Automatic chemical monitoring in the composition of functions performed by the unit level control system in the new projects of nuclear power plant units

    Science.gov (United States)

    Denisova, L. G.; Khrennikov, N. N.

    2014-08-01

    The article presents information on the state of regulatory framework and development of a subsystem for automated chemical monitoring of water chemistries in the primary and secondary coolant circuits used as part of the automatic process control system in new projects of VVER reactor-based nuclear power plant units. For the strategy of developing and putting in use the water chemistry-related part of the automated process control system within the standard AES-2006 nuclear power plant project to be implemented, it is necessary to develop regulatory documents dealing with certain requirements imposed on automatic water chemistry monitoring systems in accordance with the requirements of federal codes and regulations in the field of using atomic energy.

  7. Utilization of Unmanned Aerial Vehicles for Rangeland Resources Monitoring in a Changing Regulatory Environment (Invited)

    Science.gov (United States)

    Rango, A.; Vivoni, E. R.; Browning, D. M.; Anderson, C.; Laliberte, A. S.

    2013-12-01

    It is taking longer than expected to realize the immense potential of Unmanned Aerial Vehicles (UAVs)for civil applications due to the complexity of regulations being developed by the Federal Aviation Authority (FAA) that can be applied to both manned and unmanned flight in the National Airspace System (NAS). As a result, FAA has required that for all UAV flights in the NAS, an external pilot must maintain line-of-sight contact with the UAV. Properly trained observers must also be present to assist the external pilot in collision avoidance. Additionally, in order to fly in the NAS, formal approval must be requested from FAA through application for a Certificate of Authorization (COA for government applicants or a Special Airworthiness Certificate (SAC) in the experimental category for non-government applicants. Flight crews of UAVs must pass exams also required for manned airplane pilots. Although flight crews for UAVs are not required to become manned airplane pilots, UAV flight missions are much more efficient if one or two of the UAV flight crew are also manned aircraft pilots so they can serve as the UAV mission commander. Our group has performed numerous UAV flights within the Jornada Experimental Range in southern New Mexico. Two developments with Jornada UAVs can be recommended to other UAV operators that would increase flight time experience and study areas covered by UAV images. First, do not overlook the possibility of obtaining permission to fly in Restricted Military Airspace (RMA). At the Jornada, our airspace is approximately 50% NAS and 50% RMA. With experiments ongoing in both types of airspace, we can fly in both areas and continue to increase UAV flights. Second, we have developed an air- and-ground vehicle approach for long distance, continuous pilot transport that always maintains line-of-sight requirements. This allows flying several target areas on a single mission and increasing the number of acquired UAV images - over 90,000 UAV images have

  8. Google Earth Visualizations of the Marine Automatic Identification System (AIS): Monitoring Ship Traffic in National Marine Sanctuaries

    Science.gov (United States)

    Schwehr, K.; Hatch, L.; Thompson, M.; Wiley, D.

    2007-12-01

    The Automatic Identification System (AIS) is a new technology that provides ship position reports with location, time, and identity information without human intervention from ships carrying the transponders to any receiver listening to the broadcasts. In collaboration with the USCG's Research and Development Center, NOAA's Stellwagen Bank National Marine Sanctuary (SBNMS) has installed 3 AIS receivers around Massachusetts Bay to monitor ship traffic transiting the sanctuary and surrounding waters. The SBNMS and the USCG also worked together propose the shifting the shipping lanes (termed the traffic separation scheme; TSS) that transit the sanctuary slightly to the north to reduce the probability of ship strikes of whales that frequent the sanctuary. Following approval by the United Nation's International Maritime Organization, AIS provided a means for NOAA to assess changes in the distribution of shipping traffic caused by formal change in the TSS effective July 1, 2007. However, there was no easy way to visualize this type of time series data. We have created a software package called noaadata-py to process the AIS ship reports and produce KML files for viewing in Google Earth. Ship tracks can be shown changing over time to allow the viewer to feel the motion of traffic through the sanctuary. The ship tracks can also be gridded to create ship traffic density reports for specified periods of time. The density is displayed as map draped on the sea surface or as vertical histogram columns. Additional visualizations such as bathymetry images, S57 nautical charts, and USCG Marine Information for Safety and Law Enforcement (MISLE) can be combined with the ship traffic visualizations to give a more complete picture of the maritime environment. AIS traffic analyses have the potential to give managers throughout NOAA's National Marine Sanctuaries an improved ability to assess the impacts of ship traffic on the marine resources they seek to protect. Viewing ship traffic

  9. Improving Rangeland Monitoring and Assessment: Integrating Remote Sensing, GIS, and Unmanned Aerial Vehicle Systems

    Energy Technology Data Exchange (ETDEWEB)

    Robert Paul Breckenridge

    2007-05-01

    Creeping environmental changes are impacting some of the largest remaining intact parcels of sagebrush steppe ecosystems in the western United States, creating major problems for land managers. The Idaho National Laboratory (INL), located in southeastern Idaho, is part of the sagebrush steppe ecosystem, one of the largest ecosystems on the continent. Scientists at the INL and the University of Idaho have integrated existing field and remotely sensed data with geographic information systems technology to analyze how recent fires on the INL have influenced the current distribution of terrestrial vegetation. Three vegetation mapping and classification systems were used to evaluate the changes in vegetation caused by fires between 1994 and 2003. Approximately 24% of the sagebrush steppe community on the INL was altered by fire, mostly over a 5-year period. There were notable differences between methods, especially for juniper woodland and grasslands. The Anderson system (Anderson et al. 1996) was superior for representing the landscape because it includes playa/bare ground/disturbed area and sagebrush steppe on lava as vegetation categories. This study found that assessing existing data sets is useful for quantifying fire impacts and should be helpful in future fire and land use planning. The evaluation identified that data from remote sensing technologies is not currently of sufficient quality to assess the percentage of cover. To fill this need, an approach was designed using both helicopter and fixed wing unmanned aerial vehicles (UAVs) and image processing software to evaluate six cover types on field plots located on the INL. The helicopter UAV provided the best system compared against field sampling, but is more dangerous and has spatial coverage limitations. It was reasonably accurate for dead shrubs and was very good in assessing percentage of bare ground, litter and grasses; accuracy for litter and shrubs is questionable. The fixed wing system proved to be

  10. Real-Time Monitoring and Prediction of the Pilot Vehicle System (PVS) Closed-Loop Stability

    Science.gov (United States)

    Mandal, Tanmay Kumar

    Understanding human control behavior is an important step for improving the safety of future aircraft. Considerable resources are invested during the design phase of an aircraft to ensure that the aircraft has desirable handling qualities. However, human pilots exhibit a wide range of control behaviors that are a function of external stimulus, aircraft dynamics, and human psychological properties (such as workload, stress factor, confidence, and sense of urgency factor). This variability is difficult to address comprehensively during the design phase and may lead to undesirable pilot-aircraft interaction, such as pilot-induced oscillations (PIO). This creates the need to keep track of human pilot performance in real-time to monitor the pilot vehicle system (PVS) stability. This work focused on studying human pilot behavior for the longitudinal axis of a remotely controlled research aircraft and using human-in-the-loop (HuIL) simulations to obtain information about the human controlled system (HCS) stability. The work in this dissertation is divided into two main parts: PIO analysis and human control model parameters estimation. To replicate different flight conditions, this study included time delay and elevator rate limiting phenomena, typical of actuator dynamics during the experiments. To study human control behavior, this study employed the McRuer model for single-input single-output manual compensatory tasks. McRuer model is a lead-lag controller with time delay which has been shown to adequately model manual compensatory tasks. This dissertation presents a novel technique to estimate McRuer model parameters in real-time and associated validation using HuIL simulations to correctly predict HCS stability. The McRuer model parameters were estimated in real-time using a Kalman filter approach. The estimated parameters were then used to analyze the stability of the closed-loop HCS and verify them against the experimental data. Therefore, the main contribution of

  11. Monitoring of emissions generated by the traffic of vehicles in Bogotá

    Directory of Open Access Journals (Sweden)

    Héctor Manuel García Lozada

    2010-04-01

    Full Text Available The gases of exhaust of 25.173 vehicles that circulate in Bogota were analyzed, between November of the 2002 and May of the 2003. Of the total of evaluated vehicles, 19.938 they consume gasoline and 5.233 vehicles operate to diesel engine. One was that the 14.7% of the vehicles to gasoline do not fulfill the limit allowed for carbon monoxide established by the enviromental authority of the city and the 22.6% fail to fulfill the hydrocarbon standard. Also it was identified that the 30.8% of the vehicles to diesel engine display porcentage of opacity of the smoke over the allowed limit. Of another part, one stands out that in the vehicles to gasoline that fail to fulfill the HC norm, the concentrations they exceed in more of twice the normative limit whereas in which they operate to diesel engine and that do not fulfill the opacity norm in average, the excedencia is near 45% of the allowed thing.

  12. Hydrogen Monitoring Requirements in the Global Technical Regulation on Hydrogen and Fuel Cell Vehicles: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Buttner, William; Rivkin, Carl; Burgess, Robert; Hartmann, Kevin; Bubar, Max; Post, Matthew; Boon-Brett, Lois; Weidner, Eveline; Moretto, Pietro

    2016-07-01

    The United Nations Global Technical Regulation (GTR) Number 13 (Global Technical Regulation on Hydrogen and Fuel Cell Vehicles) is the defining document regulating safety requirements in hydrogen vehicles, and in particular fuel cell electric vehicles (FCEV). GTR Number 13 has been formally implemented and will serve as the basis for the national regulatory standards for FCEV safety in North America (Canada, United States), Japan, Korea, and the European Union. The GTR defines safety requirement for these vehicles, including specifications on the allowable hydrogen levels in vehicle enclosures during in-use and post-crash conditions and on the allowable hydrogen emissions levels in vehicle exhaust during certain modes of normal operation. However, in order to be incorporated into national regulations, that is, in order to be binding, methods to verify compliance to the specific requirements must exist. In a collaborative program, the Sensor Laboratories at the National Renewable Energy Laboratory in the United States and the Joint Research Centre, Institute for Energy and Transport in the Netherlands have been evaluating and developing analytical methods that can be used to verify compliance to the hydrogen release requirement as specified in the GTR.

  13. Definition of a near real time microbiological monitor for space vehicles

    Science.gov (United States)

    Kilgore, Melvin V., Jr.; Zahorchak, Robert J.; Arendale, William F.

    1989-01-01

    Efforts to identify the ideal candidate to serve as the biological monitor on the space station Freedom are discussed. The literature review, the evaluation scheme, descriptions of candidate monitors, experimental studies, test beds, and culture techniques are discussed. Particular attention is given to descriptions of five candidate monitors or monitoring techniques: laser light scattering, primary fluorescence, secondary fluorescence, the volatile product detector, and the surface acoustic wave detector.

  14. Analysis of an Unmanned Aerial Vehicle Monitoring System for Resurveying of Shipping Routes

    Directory of Open Access Journals (Sweden)

    Urbahs Aleksandrs

    2016-12-01

    Full Text Available The paper gives brief description of the conventional and innovative hydrography survey methods and constraints connected with the realization. Proposed hydrographic survey system based on the use of Unmanned Aerial and Maritime systems provides functionality to conduct hydrographic measurements and environment monitoring. System can be easily adapted to fulfil marine safety and security operations, e.g. intrusion threat monitoring, hazardous pollutions monitoring and prevention operations, icing conditions monitoring.

  15. 电水平尺自动化监测系统在地铁安全保护监测中的应用%Application of EL Beam Automatic Monitoring System in Safety Protection Monitoring of Metro Works

    Institute of Scientific and Technical Information of China (English)

    赵太东

    2013-01-01

    The foundation pit of Mingji hospital in Nanjing is located in the protection scope of the operating Metro system.During the excavation of the foundation pit,settlement monitoring points are arranged in the Metro tunnels,automatic monitoring system is established and EL beam automatic monitoring is executed.The monitoring practice shows that,due to the application of EL beam automatic monitoring,the manpower,materials and cost needed for the monitoring are reduced and the safety of the monitoring personnel is guaranteed.%为了降低在地铁保护区内施工对既有地铁的影响,确保地铁的正常运营,结合南京地铁中胜站一元通站区间运营地铁隧道监测实例,阐述了在地铁保护区内南京明基医院基坑开挖时,在隧道内布置沉降监测点,组建自动化监测系统,确定监测基准点及报警值,采用电水平尺实时自动监测和分析沉降曲线,并定期与人工监测数据进行比较.实践证明,电水平尺自动化监测系统能够自动记录监测过程,节约大量的人力、物力和财力,并能保证人员的安全.

  16. Rangeland resource assessment, monitoring, and management using unmanned aerial vehicle-based remote sensing

    Science.gov (United States)

    Civilian applications of Unmanned Aerial Vehicles (UAV) have rapidly been expanding recently. Thanks to military development many civil UAVs come via the defense sector. Although numerous UAVs can perform civilian tasks, the regulations imposed by FAA in the national airspace system and military e...

  17. Unmanned aerial vehicles for rangeland mapping and monitoring: a comparison of two systems

    Science.gov (United States)

    Aerial photography from unmanned aerial vehicles (UAVs) bridges the gap between ground-based observations and remotely sensed imagery from aerial and satellite platforms. UAVs can be deployed quickly and repeatedly, are less costly and safer than piloted aircraft, and can obtain very high-resolution...

  18. Unmanned aerial vehicle-based remote sensing for rangeland assessment, monitoring, and management

    Science.gov (United States)

    Rangeland comprises as much as 70% of the Earth’s land surface area. Much of this vast space is in very remote areas that are expensive and often impossible to access on the ground. Unmanned Aerial Vehicles (UAVs) have great potential for rangeland management. UAVs have several advantages over satel...

  19. Opencast Vehicle Monitoring and Intelligent Dispatching System%露天矿车辆监测与智能调度系统

    Institute of Scientific and Technical Information of China (English)

    朱建斌

    2015-01-01

    In this paper, the design of the opencast vehicle monitoring and intelligent dispatching system to achieve the monitoring and control of vehicle production, intelligent scheduling control function. Actual use of the system can greatly improve the efficiency of production and transport vehicle transport ; vehicles and equipment can get a reasonable allocation , utilization greatly improved , the optimal operation of the line ; vehicles and equipment for the use of real-time monitoring , convenient scheduling. Through the analysis of the system beneift, the economic value and application value of the vehicle monitoring and intelligent dispatching system in the open pit mine are proved.%本文设计的露天矿车辆监测与智能调度系统实现了对车辆生产的监测监控、智能调度控制功能。该系统可以极大提高生产运输车辆运输效率;优化调度使车辆和设备能得到合理分配,运行线路最优;系统对车辆和设备使用情况实时监测,提供调度策略。通过对系统效益的分析,证明了露天矿车辆监测与智能调度系统的经济价值和应用推广价值。

  20. Monitoring wildlife-vehicle collisions in the information age: how smartphones can improve data collection.

    Directory of Open Access Journals (Sweden)

    Daniel D Olson

    Full Text Available BACKGROUND: Currently there is a critical need for accurate and standardized wildlife-vehicle collision data, because it is the underpinning of mitigation projects that protect both drivers and wildlife. Gathering data can be challenging because wildlife-vehicle collisions occur over broad areas, during all seasons of the year, and in large numbers. Collecting data of this magnitude requires an efficient data collection system. Presently there is no widely adopted system that is both efficient and accurate. METHODOLOGY/PRINCIPAL FINDINGS: Our objective was to develop and test an integrated smartphone-based system for reporting wildlife-vehicle collision data. The WVC Reporter system we developed consisted of a mobile web application for data collection, a database for centralized storage of data, and a desktop web application for viewing data. The smartphones that we tested for use with the application produced accurate locations (median error = 4.6-5.2 m, and reduced location error 99% versus reporting only the highway/marker. Additionally, mean times for data entry using the mobile web application (22.0-26.5 s were substantially shorter than using the pen/paper method (52 s. We also found the pen/paper method had a data entry error rate of 10% and those errors were virtually eliminated using the mobile web application. During the first year of use, 6,822 animal carcasses were reported using WVC Reporter. The desktop web application improved access to WVC data and allowed users to easily visualize wildlife-vehicle collision patterns at multiple scales. CONCLUSIONS/SIGNIFICANCE: The WVC Reporter integrated several modern technologies into a seamless method for collecting, managing, and using WVC data. As a result, the system increased efficiency in reporting, improved accuracy, and enhanced visualization of data. The development costs for the system were minor relative to the potential benefits of having spatially accurate and temporally current

  1. Impedance-Based Non-Destructive Testing Method Combined with Unmanned Aerial Vehicle for Structural Health Monitoring of Civil Infrastructures

    Directory of Open Access Journals (Sweden)

    Wongi S Na

    2016-12-01

    Full Text Available Unmanned aerial vehicles (UAVs, commonly known as drones, are a rising topic in remote sensing technologies for structural health monitoring. With technology advancement in cameras, the visual inspection method using drones is gaining much attention in the field of civil engineering. However, although visual inspection methods are feasible for finding cracks in structures, the limitations of image processing for finding internal damage or small defects cannot be ignored. To overcome this problem, a possible application concept of UAV, combined with a vibration-based non-destructive health monitoring method, is proposed. The idea is for the drone to temporarily attach the piezoelectric transducer onto a specific region where excitation and data acquisition occurs simultaneously. This eliminates the need for a structure to be covered with hundreds of sensors for monitoring, as this concept uses a single piezoelectric transducer for monitoring a structure. The proposed work offers new areas of research by converging UAV with a vibration-based method, as associated problems are required to be solved.

  2. 用多传感器对制造车间进行大范围监测%Monitoring a Wide Manufacture Field Automatically by Multiple Sensors

    Institute of Scientific and Technical Information of China (English)

    吕健; 滨岛京子; 姜伟

    2006-01-01

    This research is dedicated to develop a safety measurement for human-machine cooperative system, in which the machine region and the human region cannot be separated due to the overlap and the movement both from human and from machines. Our proposal here is to automatically monitor the moving objects by image sensing/recognition method, such that the machine system can get enough information about the environment situation and about the production progress at any time, and therefore the machines can accordingly take some corresponding actions automatically to avoid hazard. For this purpose, two types of monitor systems are proposed. The first type is based on the omni directional vision sensor, and the second is based on the stereo vision sensor. Each type may be used alone or together with another type, depending on the safety system's requirements and the specific situation of the manufacture field to be monitored. In this paper, the description about these two types are given, and as for the special application of these image sensors into safety control, the construction of a hierarchy safety system is proposed.

  3. 水质自动监测站综合防雷技术研究%Research on Integrated Lightning Protection Technology of Automatic Water Quality Monitoring Station

    Institute of Scientific and Technical Information of China (English)

    樊希彬; 于淼; 梁铁军

    2011-01-01

    基于建筑物雷击风险评估方法,得出本地可能遭受到的雷击形式和雷电破坏电子设备途径.以鸭绿江丹东江桥水质自动监测站综合防雷系统工程设计与施工为基础,对水质自动监测站外部、内部综合防雷技术体系进行阐述,通过现代防雷技术方法,有效降低监测设备因雷击而产生的故障率、最大限度预防和减少雷击所发生的人身伤亡和国家财产损失.%According to the method of building lightning risk assessment, ways of local lightning and means that lightning damages to electronic devices are obtained. Based on the design and construction of integrated lightning protection system of Yalu River automatic water quality monitoring stations in Dandong, external and internal integrated lightning protection system of automatic water quality monitoring stations is illustrated. Through methods of modern lightning protection technology, the failure rate generated from monitoring equipment stuck by lightning can be effectively reduced, the body injuries, deaths and the loss of state property led by lightning can be maximally prevented and reduced.

  4. Design of automatic container terminal monitoring system%自动化集装箱码头监控系统设计

    Institute of Scientific and Technical Information of China (English)

    陈加敏; 薛士龙; 张宁; 曹金虎

    2011-01-01

    为实现集装箱码头的自动化运转,在构建轨道式港口集装箱码头物理模型的基础上,采用西门子PLC设计自动化集装箱码头监控系统,运用Step 7编写自动装卸船程序、点动控制程序、复位程序、异常处理程序以及应急程序等.同时,在Visual Basic 6.0开发环境下设计监控系统的人机界面,并通过工业以太网实现上位机与PLC的实时通信.结果表明,可以将该监控系统成功地运用于集装箱码头物理模型中.%To realize the automatic operation of container terminals, the Siemens PLC is used to design the automatic container terminal monitoring system, and the Step 7 is used to write the procedures including automatic loading and unloading procedure, the jog control procedure, the reset procedure, the abnormity handling procedure and the emergency procedure, etc, on the basis of the construction of a physical rail-mounted container terminal model. The human-machine interface of the monitoring system is designed under Visual Basic 6.0 development environment, and the real-time communication between PC and PLC is realized via industrial Ethernet. The result shows that the monitoring system can be used in the physical container terminal model successfully.

  5. Absorbable energy monitoring scheme: new design protocol to test vehicle structural crashworthiness

    OpenAIRE

    Ofochebe, Sunday M.; Enibe, Samuel O.; Ozoegwu, Chigbogu G.

    2016-01-01

    In vehicle crashworthiness design optimization detailed system evaluation capable of producing reliable results are basically achieved through high-order numerical computational (HNC) models such as the dynamic finite element model, mesh-free model etc. However the application of these models especially during optimization studies is basically challenged by their inherent high demand on computational resources, conditional stability of the solution process, and lack of knowledge of viable par...

  6. 粉尘自动监测降尘系统应用%Application of dust automatic monitoring and dedusting system

    Institute of Scientific and Technical Information of China (English)

    黄昌臣

    2014-01-01

    This paper introduces the dust generation, introduces the application of Zhaizhen Coal Mine dust automatic monitoring and dedusting technology, and achieved good effects of dust control, accumulated the experience for the management of coal mine dust.%该文简述了粉尘的产生,介绍了翟镇煤矿粉尘自动监测降尘技术的应用情况,并取得了很好的粉尘治理效果,为煤矿粉尘的治理积累了经验。

  7. 海量网络监控数据的自动融合和关联分析%MASS NETWORK MONITORING DATA AUTOMATIC FUSION AND CORRELATION ANALYSIS

    Institute of Scientific and Technical Information of China (English)

    张立涓

    2011-01-01

    Based on SOA, a scheme is designed for mass network monitoring data automatic fusion and correlation analysis. The anomaly detection model and network threat warning model are emphasized upon for thorough discussion and analysis.%基于SOA设计一个对海量网络监控数据的自动融合和关联分析的方案.着重对异常检测模型和网络威胁预警模型做了深入的探讨和分析.

  8. Sensor Architecture and Task Classification for Agricultural Vehicles and Environments

    Directory of Open Access Journals (Sweden)

    Francisco Rovira-Más

    2010-12-01

    Full Text Available The long time wish of endowing agricultural vehicles with an increasing degree of autonomy is becoming a reality thanks to two crucial facts: the broad diffusion of global positioning satellite systems and the inexorable progress of computers and electronics. Agricultural vehicles are currently the only self-propelled ground machines commonly integrating commercial automatic navigation systems. Farm equipment manufacturers and satellite-based navigation system providers, in a joint effort, have pushed this technology to unprecedented heights; yet there are many unresolved issues and an unlimited potential still to uncover. The complexity inherent to intelligent vehicles is rooted in the selection and coordination of the optimum sensors, the computer reasoning techniques to process the acquired data, and the resulting control strategies for automatic actuators. The advantageous design of the network of onboard sensors is necessary for the future deployment of advanced agricultural vehicles. This article analyzes a variety of typical environments and situations encountered in agricultural fields, and proposes a sensor architecture especially adapted to cope with them. The strategy proposed groups sensors into four specific subsystems: global localization, feedback control and vehicle pose, non-visual monitoring, and local perception. The designed architecture responds to vital vehicle tasks classified within three layers devoted to safety, operative information, and automatic actuation. The success of this architecture, implemented and tested in various agricultural vehicles over the last decade, rests on its capacity to integrate redundancy and incorporate new technologies in a practical way.

  9. Technological and operational structure of the National Automatic Network for Environmental Radiological Monitoring (RENAMORA); Estructura tecnologica y operativa de la Red Nacional Automatica de Monitoreo Radiologico Ambiental RENAMORA

    Energy Technology Data Exchange (ETDEWEB)

    Martinez G, E.; Lopez G, M.; Aguirre G, J.; Fabian O, R.; Hernandez A, Y., E-mail: elias.martinez@cnsns.gob.mx [Comision Nacional de Seguridad Nuclear y Salvaguardias, Dr. Barragan 779, Col. Narvarte, 03020 Ciudad de Mexico (Mexico)

    2015-09-15

    The Comision Nacional de Seguridad Nuclear y Salvaguardias (CNSNS) in Mexico is a decentralized body, under the Secretaria de Energia whose main mission is to ensure that activities involving nuclear and radioactive materials as well as ionizing radiation sources are carried out with maximum security, considering the current technological developments. In order to monitor the levels of environmental radiation to which the population is exposed, the CNSNS has established a series of radiological monitoring programs that allow characterize the environmental radiation levels in each zone or region in the country; to identify the occurrence of natural or artificial radiological events, such as nuclear tests and accidents in radioactive or nuclear facilities. The National Automatic Network for Environmental Radiological Monitoring (RENAMORA) project was initiated with the support of the IAEA through MEX9/049 project and its purpose is to have a network of instruments that automatically and in real time, transmit information of the gamma radiological environmental status of the national territory and changes occurring in it. This network provides data such as the speed of ambient dose equivalent, temperature and humidity in different regions of the country. The network is composed of 92 stations that are distributed throughout the national territory. The structure of the stations has evolved since its inception, now allowing detection tasks, data transmission and managing them remotely from the main server, which is located in the CNSNS, which is performed a statistical dose for each monitoring station. Each monitoring station is formed in its current structure by a probe detection of gamma radiation, a communication module and associated electronics, a mini Web server DataGATE, a cellular modem and an interface converter. (Author)

  10. Sentinel-1 automatic processing chain for volcanic and seismic areas monitoring within the Geohazards Exploitation Platform (GEP)

    Science.gov (United States)

    De Luca, Claudio; Zinno, Ivana; Manunta, Michele; Lanari, Riccardo; Casu, Francesco

    2016-04-01

    The microwave remote sensing scenario is rapidly evolving through development of new sensor technology for Earth Observation (EO). In particular, Sentinel-1A (S1A) is the first of a sensors' constellation designed to provide a satellite data stream for the Copernicus European program. Sentinel-1A has been specifically designed to provide, over land, Differential Interferometric Synthetic Aperture Radar (DInSAR) products to analyze and investigate Earth's surface displacements. S1A peculiarities include wide ground coverage (250 km of swath), C-band operational frequency and short revisit time (that will reduce from 12 to 6 days when the twin system Sentinel-1B will be placed in orbit during 2016). Such characteristics, together with the global coverage acquisition policy, make the Sentinel-1 constellation to be extremely suitable for volcanic and seismic areas studying and monitoring worldwide, thus allowing the generation of both ground displacement information with increasing rapidity and new geological understanding. The main acquisition mode over land is the so called Interferometric Wide Swath (IWS) that is based on the Terrain Observation by Progressive Scans (TOPS) technique and that guarantees the mentioned S1A large coverage characteristics at expense of a not trivial interferometric processing. Moreover, the satellite spatial coverage and the reduced revisit time will lead to an exponential increase of the data archives that, after the launch of Sentine-1B, will reach about 3TB per day. Therefore, the EO scientific community needs from the one hand automated and effective DInSAR tools able to address the S1A processing complexity, and from the other hand the computing and storage capacities to face out the expected large amount of data. Then, it is becoming more crucial to move processors and tools close to the satellite archives, being not efficient anymore the approach of downloading and processing data with in-house computing facilities. To address

  11. The Research and Application of GPS Monitoring System in Vehicle Management%车辆管理中GPS监控系统的应用研究

    Institute of Scientific and Technical Information of China (English)

    赵立军

    2015-01-01

    GPS监控系统又称为全球定位系统,对于车辆管理具有重大作用和意义.GPS监控系统在车辆管理中应用,首先要提高系统的运行稳定性和可靠性等性能.同时要采取措施,推广GPS监控系统在车管中的普及应用.%GPS monitoring system is also called the global positioning system,which has important function and meaning to vehicle management.In the application of GPS monitoring system in vehicle management,above all,the stability and reliability of the system should be improved.Meanwhile,measures should be taken to promote the wide application of GPS monitoring system in vehicle management.

  12. Data Description Exchange Services for Heterogeneous Vehicle and Spaceport Control and Monitor Systems Project

    Data.gov (United States)

    National Aeronautics and Space Administration — CCT has designed and prototyped, as part of the Phase-1 SBIR, a generic platform independent software capability for exchange of semantic control and monitoring...

  13. Automatic Web-Based, Radio-Network System To Monitor And Control Equipment For Investigating Gas Flux At Water - Air Interfaces

    Science.gov (United States)

    Duc, N. T.; Silverstein, S.; Wik, M.; Beckman, P.; Crill, P. M.; Bastviken, D.; Varner, R. K.

    2015-12-01

    Aquatic ecosystems are major sources of greenhouse gases (GHG). Robust measurements of natural GHG emissions are vital for evaluating regional to global carbon budgets and for assessing climate feedbacks on natural emissions to improve climate models. Diffusive and ebullitive (bubble) transport are two major pathways of gas release from surface waters. To capture the high temporal variability of these fluxes in a well-defined footprint, we designed and built an inexpensive automatic device that includes an easily mobile diffusive flux chamber and a bubble counter, all in one. Besides a function of automatically collecting gas samples for subsequent various analyses in the laboratory, this device utilizes low cost CO2 sensor (SenseAir, Sweden) and CH4 sensor (Figaro, Japan) to measure GHG fluxes. To measure the spatial variability of emissions, each of the devices is equipped with an XBee module to enable a local radio communication DigiMesh network for time synchronization and data readout at a server-controller station on the lakeshore. Software of this server-controller is operated on a low cost Raspberry Pi computer which has a 3G connection for remote monitoring - controlling functions from anywhere in the world. From field studies in Abisko, Sweden in summer 2014 and 2015, the system has resulted in measurements of GHG fluxes comparable to manual methods. In addition, the deployments have shown the advantage of a low cost automatic network system to study GHG fluxes on lakes in remote locations.

  14. Development and Integration of a Solar Powered Unmanned Aerial Vehicle and a Wireless Sensor Network to Monitor Greenhouse Gases

    Science.gov (United States)

    Malaver, Alexander; Motta, Nunzio; Corke, Peter; Gonzalez, Felipe

    2015-01-01

    Measuring gases for environmental monitoring is a demanding task that requires long periods of observation and large numbers of sensors. Wireless Sensor Networks (WSNs) and Unmanned Aerial Vehicles (UAVs) currently represent the best alternative to monitor large, remote, and difficult access areas, as these technologies have the possibility of carrying specialized gas sensing systems. This paper presents the development and integration of a WSN and an UAV powered by solar energy in order to enhance their functionality and broader their applications. A gas sensing system implementing nanostructured metal oxide (MOX) and non-dispersive infrared sensors was developed to measure concentrations of CH4 and CO2. Laboratory, bench and field testing results demonstrate the capability of UAV to capture, analyze and geo-locate a gas sample during flight operations. The field testing integrated ground sensor nodes and the UAV to measure CO2 concentration at ground and low aerial altitudes, simultaneously. Data collected during the mission was transmitted in real time to a central node for analysis and 3D mapping of the target gas. The results highlights the accomplishment of the first flight mission of a solar powered UAV equipped with a CO2 sensing system integrated with a WSN. The system provides an effective 3D monitoring and can be used in a wide range of environmental applications such as agriculture, bushfires, mining studies, zoology and botanical studies using a ubiquitous low cost technology. PMID:25679312

  15. A Space-Time Network-Based Modeling Framework for Dynamic Unmanned Aerial Vehicle Routing in Traffic Incident Monitoring Applications.

    Science.gov (United States)

    Zhang, Jisheng; Jia, Limin; Niu, Shuyun; Zhang, Fan; Tong, Lu; Zhou, Xuesong

    2015-06-12

    It is essential for transportation management centers to equip and manage a network of fixed and mobile sensors in order to quickly detect traffic incidents and further monitor the related impact areas, especially for high-impact accidents with dramatic traffic congestion propagation. As emerging small Unmanned Aerial Vehicles (UAVs) start to have a more flexible regulation environment, it is critically important to fully explore the potential for of using UAVs for monitoring recurring and non-recurring traffic conditions and special events on transportation networks. This paper presents a space-time network- based modeling framework for integrated fixed and mobile sensor networks, in order to provide a rapid and systematic road traffic monitoring mechanism. By constructing a discretized space-time network to characterize not only the speed for UAVs but also the time-sensitive impact areas of traffic congestion, we formulate the problem as a linear integer programming model to minimize the detection delay cost and operational cost, subject to feasible flying route constraints. A Lagrangian relaxation solution framework is developed to decompose the original complex problem into a series of computationally efficient time-dependent and least cost path finding sub-problems. Several examples are used to demonstrate the results of proposed models in UAVs' route planning for small and medium-scale networks.

  16. Development and integration of a solar powered unmanned aerial vehicle and a wireless sensor network to monitor greenhouse gases.

    Science.gov (United States)

    Malaver, Alexander; Motta, Nunzio; Corke, Peter; Gonzalez, Felipe

    2015-02-11

    Measuring gases for environmental monitoring is a demanding task that requires long periods of observation and large numbers of sensors. Wireless Sensor Networks (WSNs) and Unmanned Aerial Vehicles (UAVs) currently represent the best alternative to monitor large, remote, and difficult access areas, as these technologies have the possibility of carrying specialized gas sensing systems. This paper presents the development and integration of a WSN and an UAV powered by solar energy in order to enhance their functionality and broader their applications. A gas sensing system implementing nanostructured metal oxide (MOX) and non-dispersive infrared sensors was developed to measure concentrations of CH4 and CO2. Laboratory, bench and field testing results demonstrate the capability of UAV to capture, analyze and geo-locate a gas sample during flight operations. The field testing integrated ground sensor nodes and the UAV to measure CO2 concentration at ground and low aerial altitudes, simultaneously. Data collected during the mission was transmitted in real time to a central node for analysis and 3D mapping of the target gas. The results highlights the accomplishment of the first flight mission of a solar powered UAV equipped with a CO2 sensing system integrated with a WSN. The system provides an effective 3D monitoring and can be used in a wide range of environmental applications such as agriculture, bushfires, mining studies, zoology and botanical studies using a ubiquitous low cost technology.

  17. Development and Integration of a Solar Powered Unmanned Aerial Vehicle and a Wireless Sensor Network to Monitor Greenhouse Gases

    Directory of Open Access Journals (Sweden)

    Alexander Malaver

    2015-02-01

    Full Text Available Measuring gases for environmental monitoring is a demanding task that requires long periods of observation and large numbers of sensors. Wireless Sensor Networks (WSNs and Unmanned Aerial Vehicles (UAVs currently represent the best alternative to monitor large, remote, and difficult access areas, as these technologies have the possibility of carrying specialized gas sensing systems. This paper presents the development and integration of a WSN and an UAV powered by solar energy in order to enhance their functionality and broader their applications. A gas sensing system implementing nanostructured metal oxide (MOX and non-dispersive infrared sensors was developed to measure concentrations of CH4 and CO2. Laboratory, bench and field testing results demonstrate the capability of UAV to capture, analyze and geo-locate a gas sample during flight operations. The field testing integrated ground sensor nodes and the UAV to measure CO2 concentration at ground and low aerial altitudes, simultaneously. Data collected during the mission was transmitted in real time to a central node for analysis and 3D mapping of the target gas. The results highlights the accomplishment of the first flight mission of a solar powered UAV equipped with a CO2 sensing system integrated with a WSN. The system provides an effective 3D monitoring and can be used in a wide range of environmental applications such as agriculture, bushfires, mining studies, zoology and botanical studies using a ubiquitous low cost technology.

  18. A Space-Time Network-Based Modeling Framework for Dynamic Unmanned Aerial Vehicle Routing in Traffic Incident Monitoring Applications

    Directory of Open Access Journals (Sweden)

    Jisheng Zhang

    2015-06-01

    Full Text Available It is essential for transportation management centers to equip and manage a network of fixed and mobile sensors in order to quickly detect traffic incidents and further monitor the related impact areas, especially for high-impact accidents with dramatic traffic congestion propagation. As emerging small Unmanned Aerial Vehicles (UAVs start to have a more flexible regulation environment, it is critically important to fully explore the potential for of using UAVs for monitoring recurring and non-recurring traffic conditions and special events on transportation networks. This paper presents a space-time network- based modeling framework for integrated fixed and mobile sensor networks, in order to provide a rapid and systematic road traffic monitoring mechanism. By constructing a discretized space-time network to characterize not only the speed for UAVs but also the time-sensitive impact areas of traffic congestion, we formulate the problem as a linear integer programming model to minimize the detection delay cost and operational cost, subject to feasible flying route constraints. A Lagrangian relaxation solution framework is developed to decompose the original complex problem into a series of computationally efficient time-dependent and least cost path finding sub-problems. Several examples are used to demonstrate the results of proposed models in UAVs’ route planning for small and medium-scale networks.

  19. A Space-Time Network-Based Modeling Framework for Dynamic Unmanned Aerial Vehicle Routing in Traffic Incident Monitoring Applications

    Science.gov (United States)

    Zhang, Jisheng; Jia, Limin; Niu, Shuyun; Zhang, Fan; Tong, Lu; Zhou, Xuesong

    2015-01-01

    It is essential for transportation management centers to equip and manage a network of fixed and mobile sensors in order to quickly detect traffic incidents and further monitor the related impact areas, especially for high-impact accidents with dramatic traffic congestion propagation. As emerging small Unmanned Aerial Vehicles (UAVs) start to have a more flexible regulation environment, it is critically important to fully explore the potential for of using UAVs for monitoring recurring and non-recurring traffic conditions and special events on transportation networks. This paper presents a space-time network- based modeling framework for integrated fixed and mobile sensor networks, in order to provide a rapid and systematic road traffic monitoring mechanism. By constructing a discretized space-time network to characterize not only the speed for UAVs but also the time-sensitive impact areas of traffic congestion, we formulate the problem as a linear integer programming model to minimize the detection delay cost and operational cost, subject to feasible flying route constraints. A Lagrangian relaxation solution framework is developed to decompose the original complex problem into a series of computationally efficient time-dependent and least cost path finding sub-problems. Several examples are used to demonstrate the results of proposed models in UAVs’ route planning for small and medium-scale networks. PMID:26076404

  20. Monitoring and automatique dispache vehicles; Monitorizacion y Despacho Automatico de Camiones (MODAC)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-12-31

    The project is based on the applying modern place positioning techniques on the earth surface by means of satellite G. P. S. (Global Positioning System), using these techniques to control and follow up lorries and machines in open pit mines. The information, which is continually transmitted by each machine to the control center, keeps us informed about their speed, direction and movement. Other data such as the load transported by the lorry, breakdowns and other information of interest are incorporated, being able to view the machines along their data on a digitalized drawing of the mine on the screen situated at the control centre. It has been an intelligent program which, by means of a mathematical algorhythm, processes these data, optimizing the automatic distribution of the lorries to the different loading equipment, and the computer informing each lorry driver which equipment he must load at. (Author)

  1. Microgravity monitoring instrument development and application to vernier guidance, navigation, and vehicle control

    Science.gov (United States)

    Howell, Joseph J.

    1992-01-01

    The fact that a spacecraft traveling through the 'vacuum' of space conforms to the classical Keplerian ellipse has recently been disproven. It is now well known that such a vehicle is acted on by many external forces such as drag in the rarefied particle atmosphere, solar wind and particle impact. This paper discusses the development of sensors and sensor systems to measure these minute forces of acceleration/deceleration. Four systems will be discussed: a 10 exp -4 g system, a 10 exp -6 g system, a 10 exp -(6-8) g system and a 10 exp -9 g system. The design of each system will be explained along with the advantages/disadvantages of each. Various applications unique to each system will be discussed. Configurations, design schemes, test plans and calibration procedures, both in the ground laboratory and inflight, will be presented. The current design/development/operational status of each system will be examined and future plans discussed. Application to aerodynamic studies and vernier guidance, navigation, and vehicle control will also be examined.

  2. Monitoring Agent for Detecting Malicious Packet Drops for Wireless Sensor Networks in the Microgrid and Grid-enabled Vehicles

    Directory of Open Access Journals (Sweden)

    Jongbin Ko

    2012-05-01

    Full Text Available Of the range of wireless communication technologies, wireless sensor networks (WSN will be one of the most appropriate technologies for the Microgrid and Grid‐enabled Vehicles in the Smartgrid. To ensure the security of WSN, the detection of attacks is more efficient than their prevention because of the lack of computing power. Malicious packet drops are the easiest means of attacking WSNs. Thus, the sensors used for constructing a WSN require a packet drop monitoring agent, such as Watchdog. However, Watchdog has a partial drop problem such that an attacker can manipulate the packet dropping rate below the minimum misbehaviour monitoring threshold. Furthermore, Watchdog does not consider real traffic situations, such as congestion and collision, and so it has no way of recognizing whether a packet drop is due to a real attack or network congestion. In this paper, we propose a malicious packet drop monitoring agent, which considers traffic conditions. We used the actual traffic volume on neighbouring nodes and the drop rate while monitoring a sending node for specific period. It is more effective in real network scenarios because unlike Watchdog it considers the actual traffic, which only uses the Pathrater. Moreover, our proposed method does not require authentication, packet encryption or detection packets. Thus, there is a lower likelihood of detection failure due to packet spoofing, Man‐In‐the Middle attacks or Wormhole attacks. To test the suitability of our proposed concept for a series of network scenarios, we divided the simulations into three types: one attack node, more than one attack nodes and no attack nodes. The results of the simulations meet our expectations.

  3. Micro-aerial vehicle type wall-climbing robot mechanism for structural health monitoring

    Science.gov (United States)

    Shin, Jae-Uk; Kim, Donghoon; Kim, Jong-Heon; Myung, Hyun

    2013-04-01

    Currently, the maintenance or inspection of large structures is labor-intensive, so it has a problem of the large cost due to the staffing professionals and the risk for hard to reach areas. To solve the problem, the needs of wall-climbing robot are emerged. Infra-based wall-climbing robots to maintain an outer wall of building have high payload and safety. However, the infrastructure for the robot must be equipped on the target structure and the infrastructure isn't preferred by the architects since it can injure the exterior of the structure. These are the reasons of why the infra-based wall-climbing robot is avoided. In case of the non-infra-based wall-climbing robot, it is researched to overcome the aforementioned problems. However, most of the technologies are in the laboratory level since the payload, safety and maneuverability are not satisfactory. For this reason, aerial vehicle type wall-climbing robot is researched. It is a flying possible wallclimbing robot based on a quadrotor. It is a famous aerial vehicle robot using four rotors to make a thrust for flying. This wall-climbing robot can stick to a vertical wall using the thrust. After sticking to the wall, it can move with four wheels installed on the robot. As a result, it has high maneuverability and safety since it can restore the position to the wall even if it is detached from the wall by unexpected disturbance while climbing the wall. The feasibility of the main concept was verified through simulations and experiments using a prototype.

  4. Breakdown maintenance of ozone monitors at automatic air quality monitoring station%空气自动监测站 O3监测仪故障维修

    Institute of Scientific and Technical Information of China (English)

    鲍雷; 杨灿

    2014-01-01

    臭氧(O3)是城市环境空气中最为重要的二次污染物之一,对臭氧进行自动监测是环境管理和科学研究的要求。在长期使用臭氧自动监测仪过程中,常常可能因为仪器出现问题而影响到空气质量日报,本文以法国ESA公司O342M型O3自动监测仪为例,介绍了紫外光度法臭氧自动监测仪的原理和常见故障的维修。%Ozone is one of the most important secondary pollutants in urban ambient air .Automatic monitoring of ozone is essential for both environment management and scientific research .The operation troubles of automatic ozone monitors would always affect the daily air quality report .This paper intro-duced the basic principles of ozone monitor ,the common faults during maintenance and operation ,w hich taked example by the O342M model produced by ESA company in French .

  5. 无人机溢油监视监测系统方案构想%roject concept on unmanned air vehicle oil spill monitoring system

    Institute of Scientific and Technical Information of China (English)

    舒迟

    2015-01-01

    The paper introduces the functions and system components of the oil spill surveillance and monitor system using unmanned aerial vehicles (UAV) and analyzes its advantage of application in oil spill surveillance and monitor.%文中介绍了无人机溢油监视监测系统的功能和系统组成,并分析了其在溢油监视监测领域中的应用优势。

  6. Comparison of accuracy and completeness of data obtained from three types of automatic water-quality monitors

    Energy Technology Data Exchange (ETDEWEB)

    Katzenbach, M.S.

    1990-01-01

    A comparison of data collected by the US Geological Survey flowthrough monitor, the US Geological Survey minimonitor, and a self-contained commercial packaged-senor system indicates that the data obtained by means of the flowthrough-monitor system were the most accurate and the most complete of the three systems. Minimonitors were installed at four sites in Ohio where US Geological Survey flowthrough monitors were in operation. Two packaged-sensor systems also were assigned to each site and were alternated every two weeks. Detailed records were kept of: (1) field measurements, for comparison with monitor-system data from each instrument; and (2) equipment problems that resulted in loss of data. Results of the comparisons show that the flow-through monitor gave the most accurate and the most complete data. 2 refs., 29 figs., 6 tabs.

  7. Comparison of accuracy and completeness of data obtained from three types of automatic water-quality monitors. Water Resources Investigation

    Energy Technology Data Exchange (ETDEWEB)

    Katzenbach, M.S.

    1990-01-01

    A comparison of data (specific conductance, dissolved-oxygen concentration, temperature, and pH) collected by the U.S. Geological Survey flowthrough monitor, the U.S. Geological Survey minimonitor, and a self-contained commercial packaged-sensor system indicates that the data obtained by means of the flowthrough-monitor system were the most accurate and the most complete of the three systems. Minimonitors were installed at four sites in Ohio where U.S. Geological Survey flowthrough monitors were in operation. Two packaged-sensor systems also were assigned to each site and were alternated every two weeks. Detailed records were kept of field measurements, for comparison with monitor-system data from each instrument, and equipment problems that resulted in loss of data. Results of the comparisons show that the flow-through monitor gave the most accurate and the most complete data.

  8. 自动化监测技术在大型抽水试验中的应用%Application of automatic monitoring technology to large pumping test

    Institute of Scientific and Technical Information of China (English)

    刘慧; 吴彬; 王智

    2011-01-01

    本文通过与传统监测方法比较,介绍了地下水位及流量的自动化监测技术,即利用Mini-Diver监测水位埋深并利用TC403水位流量计结合矩形堰监测流量.而且,通过对新疆温宿县台兰河地下水库大型抽水试验地下水监测的实例研究,证明该自动化监测技术的记录准确,误差小,监测数据量大,操作方便灵活,可及时掌握地下水动态变化,具有广泛的推广利用价值.%An automatic technology of monitoring on the level and flow rate of groundwater is described herein through a comparison made with the conventional monitoring methods, I. E. The buried depth of groundwater level is monitored with Mini-Diver and the flow rate is measured with TC-403 level/flow-meter combined with rectangular weir. Furthermore, based on the case study made on the groundwater monitoring for the large pumping test of the groundwater reservoir in Tailanhe River Basin within Wensu County of Xinjiang, the technology is demonstrated to have the merits such as accurate recording, small error, large amount of monitoring data, convenient and flexible to be operated, etc. , and can monitor the dynamic variation of ground water in time, and then it has a usable value to be widely popularized as well.

  9. Proposals of cinder storage with automatic monitoring system in Jiangxiwan%江西湾灰渣库加装自动化监测系统的建议

    Institute of Scientific and Technical Information of China (English)

    刘国勇; 胡兴

    2012-01-01

    Automatic secuirity monitoring is held to cinder storage with automatic monitoring system to report potential security risk, propose security warning, assess reliability of existing structure, provide data for administrative decision and maintainance for tailings dam. The tailings dam automatic monitoring system is proposed to be mounted in cinder storage in Jiangxiwan.%灰渣库自动化监测系统通过对灰渣库进行自动化的安全监测,能及时发现安全隐患,并提出安全预警,评估结构的可靠性,能为尾矿库的管理决策与维护等提供数据依据,故建议在江西湾灰渣库加装大坝自动化监测系统。

  10. Automatic vehicle detection using spaceborne optical remote sensing images in city area%城市街区星载光学遥感图像车辆目标自动检测方法

    Institute of Scientific and Technical Information of China (English)

    李昭慧; 张建奇

    2014-01-01

    It is difficult to detect vehicles in city area by using paceborne optical remote sensing images, because the background in city area is too complex. In this paper, an automatic vehicle detection method was proposed to address the issue by using background segmentation method. Firstly, the physical property of the vegetation was analyzed and used to suppress the vegetation background of a scene by using the multi- spectral information of the scene. Next, the reflectance characteristics of city area cover types were analyzed. Based on the reflectance characteristics of building roofs and roads, the building background in the scene was removed by employing the binary morphological method on the panchromatic band image. Finally, the famous RX algorithm was introduced to detect the vehicles on the vegetation and building background suppressed image. The proposed method is applied to the actual Quickbird image for vehicle target detection. The results show that the proposed method has strong robustness, high efficiency, and automatic characteristics, and can be used for vehicle detection in city area.%针对星载光学遥感图像城市街区复杂背景问题,提出一种车辆目标自动检测方法。首先,利用场景中植被背景的物理属性,通过多光谱波段抑制场景中的植被背景,然后,在分析城市街区地物形态反射率特性的基础上,利用全色波段并结合二值形态学方法抑制场景中的建筑物,最后,引入著名的RX算法对抑制后的图像进行车辆目标检测。将文中提出的方法应用于实际Quickbird影像的车辆目标检测,结果表明所提出的方法具有鲁棒性强,执行效率高,不需要人工辅助等方面的特点,可用于城市街区车辆目标的自动检测。

  11. Monitoring of the infrastructure and services used to handle and automatically produce Alignment and Calibration conditions at CMS

    CERN Document Server

    Sipos, Roland

    2017-01-01

    The Compact Muon Solenoid (CMS) experiment makes a vast use of alignment and calibration measurements in several crucial workflows in the event selection at the High Level Trigger (HLT), in the processing of the recorded collisions and in the production of simulated events.A suite of services addresses the key requirements for the handling of the alignment and calibration conditions such as recording the status of the experiment and of the ongoing data taking, accepting conditions data updates provided by the detector experts, aggregating and navigating the calibration scenarios, and distributing conditions for consumption by the collaborators. Since a large fraction of such services is critical for the data taking and event filtering in the HLT, a comprehensive monitoring and alarm generating system had to be developed. Such monitoring system has been developed based on the open source industry standard for monitoring and alerting services (Nagios) to monitor the database back-end, the hosting nodes and k...

  12. Development of a Fixed Wing Unmanned Aerial Vehicle (UAV for Disaster Area Monitoring and Mapping

    Directory of Open Access Journals (Sweden)

    Gesang Nugroho

    2015-12-01

    Full Text Available The development of remote sensing technology offers the ability to perform real-time delivery of aerial video and images. A precise disaster map allows a disaster management to be done quickly and accurately. This paper discusses how a fixed wing UAV can perform aerial monitoring and mapping of disaster area to produce a disaster map. This research was conducted using a flying wing, autopilot, digital camera, and data processing software. The research starts with determining the airframe and the avionic system then determine waypoints. The UAV flies according to the given waypoints while taking video and photo. The video is transmitted to the Ground Control Station (GCS so that an operator in the ground can monitor the area condition in real time. After obtaining data, then it is processed to obtain a disaster map. The results of this research are: a fixed wing UAV that can monitor disaster area and send real-time video and photos, a GCS equipped with image processing software, and a mosaic map. This UAV used a flying wing that has 3 kg empty weight, 2.2 m wingspan, and can fly for 12-15 minutes. This UAV was also used for a mission at Parangtritis coast in the southern part of Yogyakarta with flight altitude of 150 m, average speed of 15 m/s, and length of way point of around 5 km in around 6 minutes. A mosaic map with area of around 300 m x 1500 m was also obtained. Interpretation of the mosaic led to some conclusions including: lack of evacuation routes, residential area which faces high risk of tsunami, and lack of green zone around the shore line.

  13. Development of a nuclear technique for monitoring water levels in pressurized vehicles

    Science.gov (United States)

    Singh, J. J.; Davis, W. T.; Mall, G. H.

    1983-01-01

    A new technique for monitoring water levels in pressurized stainless steel cylinders was developed. It is based on differences in attenuation coefficients of water and air for Cs137 (662 keV) gamma rays. Experimentally observed gamma ray counting rates with and without water in model reservoir cylinder were compared with corresponding calculated values for two different gamma ray detection theshold energies. Calculated values include the effects of multiple scattering and attendant gamma ray energy reductions. The agreement between the measured and calculated values is reasonably good. Computer programs for calculating angular and spectral distributions of scattered radition in various media are included.

  14. Automatic Monitoring System in High Formwork Monitoring of Construction Engineering%自动监测系统在建筑工程高支模监测中的应用

    Institute of Scientific and Technical Information of China (English)

    赖仁纯

    2015-01-01

    High formwork system of building project has high-risk, complex, accidents unexpected features. This article describes the application example about the automatic monitoring system in high formwork system of the con-struction safety monitoring of construction engineering, specifically addressed the monitoring of content, measuring points, analysis and evaluation of monitoring results. It provides construction safety for high formwork stability mon-itoring, implementation of dynamic design, dynamic construction.%建筑物高支模工程具有高危性、复杂性、事故突发性的特点,本文介绍了自动监测系统在建筑工程高支模施工过程进行安全监控的应用实例,具体阐述了监测内容、测点布置及监测结果分析与评价,为高支模工程进行稳定性监测,实施动态设计、动态施工、安全施工提供了依据。

  15. Technical Note: Advances in flash flood monitoring using unmanned aerial vehicles (UAVs)

    Science.gov (United States)

    Perks, Matthew T.; Russell, Andrew J.; Large, Andrew R. G.

    2016-10-01

    Unmanned aerial vehicles (UAVs) have the potential to capture information about the earth's surface in dangerous and previously inaccessible locations. Through image acquisition of flash flood events and subsequent object-based analysis, highly dynamic and oft-immeasurable hydraulic phenomena may be quantified at previously unattainable spatial and temporal resolutions. The potential for this approach to provide valuable information about the hydraulic conditions present during dynamic, high-energy flash floods has until now not been explored. In this paper we adopt a novel approach, utilizing the Kande-Lucas-Tomasi (KLT) algorithm to track features present on the water surface which are related to the free-surface velocity. Following the successful tracking of features, a method analogous to the vector correction method has enabled accurate geometric rectification of velocity vectors. Uncertainties associated with the rectification process induced by unsteady camera movements are subsequently explored. Geo-registration errors are relatively stable and occur as a result of persistent residual distortion effects following image correction. The apparent ground movement of immobile control points between measurement intervals ranges from 0.05 to 0.13 m. The application of this approach to assess the hydraulic conditions present in the Alyth Burn, Scotland, during a 1 : 200 year flash flood resulted in the generation of an average 4.2 at a rate of 508 measurements s-1. Analysis of these vectors provides a rare insight into the complexity of channel-overbank interactions during flash floods. The uncertainty attached to the calculated velocities is relatively low, with a spatial average across the area of ±0.15 m s-1. Little difference is observed in the uncertainty attached to out-of-bank velocities (±0.15 m s-1), and within-channel velocities (±0.16 m s-1), illustrating the consistency of the approach.

  16. Discussion on Issues Concerning LGH-01 Air Quality Continuous Automatic Monitoring System%LGH-01型空气质量连续自动监测系统的有关问题探讨

    Institute of Scientific and Technical Information of China (English)

    王斌; 袁玲双

    2011-01-01

    Focusing on some issues related to the operation maintenance of LGH-01 air quality continuous automatic monitoring system applied in Daqing Air Quality Automatic Monitoring Station, this article has summarized some effective working experience as well as operation methods for readers' references.%针对LGH-01型空气质量连续自动监测系统在大庆市空气质量自动监测站的有关维护运行问题,总结出一些有效的工作经验和操作方法供大家参考。

  17. Research and Application of Automatic Monitoring Technology for Oil-water Interface%油水界面自动监测技术研究与应用

    Institute of Scientific and Technical Information of China (English)

    李高峰; 付石; 何帆; 陈超生

    2012-01-01

    Crude oil settlement dehydration tank layered aquifer monitoring technology has been a technical problems of research in the field of tank water content monitoring at home and abroad. In this paper,aiming at the problems we has been developed a measure of the entire tank layers water content of the oil-water interface automatically monitor,and measure on each moisture content value with the level of the corresponding relations,the settlement dehydration tank reservoir simultaneous detection of the water layer and the emulsion layer,and be able to calculate a full tank of oil content and moisture content,to achieve its automation remote control.%原油沉降脱水罐分层含水监测技术一直是国内外油罐含水监测领域研完的一项技术难题.文中针对此项难点,研制开发出了一种能测量出整个油罐各层含水的油水界面自动监测仪,同时能测量出每层位含水值跟液位的对应关系,实现对沉降脱水罐油层、水层及乳化层同时检测,并且能计算出全罐含油和含水量,实现其自动化远程控制.

  18. Automatic Water Sensor Window Opening System

    KAUST Repository

    Percher, Michael

    2013-12-05

    A system can automatically open at least one window of a vehicle when the vehicle is being submerged in water. The system can include a water collector and a water sensor, and when the water sensor detects water in the water collector, at least one window of the vehicle opens.

  19. Possibilities for Using LIDAR and Photogrammetric Data Obtained with AN Unmanned Aerial Vehicle for Levee Monitoring

    Science.gov (United States)

    Bakuła, K.; Ostrowski, W.; Szender, M.; Plutecki, W.; Salach, A.; Górski, K.

    2016-06-01

    This paper presents the possibilities for using an unmanned aerial system for evaluation of the condition of levees. The unmanned aerial system is equipped with two types of sensor. One is an ultra-light laser scanner, integrated with a GNSS receiver and an INS system; the other sensor is a digital camera that acquires data with stereoscopic coverage. Sensors have been mounted on the multirotor, unmanned platform the Hawk Moth, constructed by MSP company. LiDAR data and images of levees the length of several hundred metres were acquired during testing of the platform. Flights were performed in several variants. Control points measured with the use of the GNSS technique were considered as reference data. The obtained results are presented in this paper; the methodology of processing the acquired LiDAR data, which increase in accuracy when low accuracy of the navigation systems occurs as a result of systematic errors, is also discussed. The Iterative Closest Point (ICP) algorithm, as well as measurements of control points, were used to georeference the LiDAR data. Final accuracy in the order of centimetres was obtained for generation of the digital terrain model. The final products of the proposed UAV data processing are digital elevation models, an orthophotomap and colour point clouds. The authors conclude that such a platform offers wide possibilities for low-budget flights to deliver the data, which may compete with typical direct surveying measurements performed during monitoring of such objects. However, the biggest advantage is the density and continuity of data, which allows for detection of changes in objects being monitored.

  20. Mine Fan Automatic Monitoring System Based on PID Control%基于PID控制的矿井通风机自动监控系统研究

    Institute of Scientific and Technical Information of China (English)

    曹帅; 刘混举

    2015-01-01

    矿井通风机是煤矿通风系统的主要设备之一。通过结合煤矿生产的需要和矿井通风机自动监控系统的结构,提出了以PLC和组态技术为核心的控制系统,并引入了二自由度的PID控制理论。通过Matlab/Simulink动态仿真对矿井通风机自动控制系统进行参数控制,可实时监测并读取通风机的风速、风量、电流和温度等参数,且具有良好的预警功能,对企业实时掌握风机工况有重要的意义。%This is one of the main mine fan equipment mine ventilation system. By combining the structure of coal production and mine fan needs automatic monitoring system is proposed in order to configure the PLC and technology as the core control system, and the introduction of two degrees of freedom PID control theory. By Matlab/Simulink Dynamic Simulation for mine fan automatic control system parameter control, real-time monitoring and reading wind speed, wind, current, and temperature and other parameters fan, and has a good early warning capabilities, real-time control of business conditions fan there are important.

  1. 乌鲁瓦提大坝自动化监测系统软件的检定研究%Research on the verification of Wuluwati dam automatic monitoring system software

    Institute of Scientific and Technical Information of China (English)

    于秋月

    2015-01-01

    Safety monitoring system operation and management will encounter various problems with the continuous maturation and perfection of dam automatic safety monitoring system.Timely and effective removal of malfunctions is one of the main missions in dam monitoring.In the paper,problems of Wuluwati Water-control Project dam automatic monitoring system software during operation are combined for summarizing and analyzing monitoring instrument calibration and monitoring data treatment aiming at accumulating experience for operation and management of dam automatic monitoring system.%随着大坝自动化安全监测系统的不断成熟完善,安全监测系统运行管理中会遇到各种问题,及时、有效地排除故障是大坝监测的主要任务之一。本文结合乌鲁瓦提水利枢纽大坝安全监测系统在运行过程中遇到的问题,对监测仪器率定及监测数据处理进行总结和分析,意在为大坝自动化安全监测系统运行管理积累经验。

  2. Unmanned aerial vehicles for the assessment and monitoring of environmental contamination: An example from coal ash spills.

    Science.gov (United States)

    Messinger, Max; Silman, Miles

    2016-11-01

    Unmanned aerial vehicles (UAVs) offer new opportunities to monitor pollution and provide valuable information to support remediation. Their low-cost, ease of use, and rapid deployment capability make them ideal for environmental emergency response. Here we present a UAV-based study of the third largest coal ash spill in the United States. Coal ash from coal combustion is a toxic industrial waste material present worldwide. Typically stored in settling ponds in close proximity to waterways, coal ash poses significant risk to the environment and drinking water supplies from both chronic contamination of surface and ground water and catastrophic pond failure. We sought to provide an independent estimate of the volume of coal ash and contaminated water lost during the rupture of the primary coal ash pond at the Dan River Steam Station in Eden, NC, USA and to demonstrate the feasibility of using UAVs to rapidly respond to and measure the volume of spills from ponds or containers that are open to the air. Using structure-from-motion (SfM) imagery analysis techniques, we reconstructed the 3D structure of the pond bottom after the spill, used historical imagery to estimate the pre-spill waterline, and calculated the volume of material lost. We estimated a loss of 66,245 ± 5678 m(3) of ash and contaminated water. The technique used here allows rapid response to environmental emergencies and quantification of their impacts at low cost, and these capabilities will make UAVs a central tool in environmental planning, monitoring, and disaster response.

  3. Long-term monitoring of a large landslide by using an Unmanned Aerial Vehicle (UAV)

    Science.gov (United States)

    Lindner, Gerald; Schraml, Klaus; Mansberger, Reinfried; Hübl, Johannes

    2015-04-01

    Currently UAVs become more and more important in various scientific areas, including forestry, precision farming, archaeology and hydrology. Using these drones in natural hazards research enables a completely new level of data acquisition being flexible of site, invariant in time, cost-efficient and enabling arbitrary spatial resolution. In this study, a rotary-wing Mini-UAV carrying a DSLR camera was used to acquire time series of overlapping aerial images. These photographs were taken as input to extract Digital Surface Models (DSM) as well as orthophotos in the area of interest. The "Pechgraben" area in Upper Austria has a catchment area of approximately 2 km². Geology is mainly dominated by limestone and sandstone. Caused by heavy rainfalls in the late spring of 2013, an area of about 70 ha began to move towards the village in the valley. In addition to the urgent measures, the slow-moving landslide was monitored approximately every month over a time period of more than 18 months. A detailed documentation of the change process was the result. Moving velocities and height differences were quantified and validated using a dense network of Ground Control Points (GCP). For further analysis, 14 image flights with a total amount of 10.000 photographs were performed to create multi-temporal geodata in in sub-decimeter-resolution for two depicted areas of the landslide. Using a UAV for this application proved to be an excellent choice, as it allows short repetition times, low flying heights and high spatial resolution. Furthermore, the UAV acts almost weather independently as well as highly autonomously. High-quality results can be expected within a few hours after the photo flight. The UAV system performs very well in an alpine environment. Time series of the assessed geodata detect changes in topography and provide a long-term documentation of the measures taken in order to stop the landslide and to prevent infrastructure from damage.

  4. 基于GIS的汽车燃油油量监测系统设计%Design of Vehicle Fuel Oil Monitoring System Based on GIS

    Institute of Scientific and Technical Information of China (English)

    沈娣丽; 李新华; 陆程; 郭侠; 明五一

    2012-01-01

    采用GIS、GPRS、嵌入式、数据库等技术,设计了基于GIS的汽车燃油油量监测系统.该系统以嵌入式单片机为基础,可以对车辆的位置、油箱油量、瞬时油耗等进行实时监测、显示和上传到监控中心.此外系统采用模块化设计方法,实现了各个车载设备与监控中心的松散耦合,既具有高度集成性又可灵活搭配.该系统设计简单,可靠性好,易于安装,经济实用.%Using GIS (Geography Information System), GPS (Global Position System), embedded, database technology, GIS-based vehicle fuel oil monitoring system was designed. The system was based on the embedded microcontroller, with which the location of the vehicle, fuel tank, instantaneous fuel consumption and others could be monitored, displayed and uploaded to the monitoring center in real-time. In addition the system was designed modular in methods, this enabled that each vehicle terminal and monitoring center could be loosely coupled, highly integrated and flexibly mixed. The system is designed to be simple, reliable, easy to install, economical and practical.

  5. Definition, technology readiness, and development cost of the orbit transfer vehicle engine integrated control and health monitoring system elements

    Science.gov (United States)

    Cannon, I.; Balcer, S.; Cochran, M.; Klop, J.; Peterson, S.

    1991-01-01

    An Integrated Control and Health Monitoring (ICHM) system was conceived for use on a 20 Klb thrust baseline Orbit Transfer Vehicle (OTV) engine. Considered for space used, the ICHM was defined for reusability requirements for an OTV engine service free life of 20 missions, with 100 starts and a total engine operational time of 4 hours. Functions were derived by flowing down requirements from NASA guidelines, previous OTV engine or ICHM documents, and related contracts. The elements of an ICHM were identified and listed, and these elements were described in sufficient detail to allow estimation of their technology readiness levels. These elements were assessed in terms of technology readiness level, and supporting rationale for these assessments presented. The remaining cost for development of a minimal ICHM system to technology readiness level 6 was estimated. The estimates are within an accuracy range of minus/plus 20 percent. The cost estimates cover what is needed to prepare an ICHM system for use on a focussed testbed for an expander cycle engine, excluding support to the actual test firings.

  6. Automatic sequences

    CERN Document Server

    Haeseler, Friedrich

    2003-01-01

    Automatic sequences are sequences which are produced by a finite automaton. Although they are not random they may look as being random. They are complicated, in the sense of not being not ultimately periodic, they may look rather complicated, in the sense that it may not be easy to name the rule by which the sequence is generated, however there exists a rule which generates the sequence. The concept automatic sequences has special applications in algebra, number theory, finite automata and formal languages, combinatorics on words. The text deals with different aspects of automatic sequences, in particular:· a general introduction to automatic sequences· the basic (combinatorial) properties of automatic sequences· the algebraic approach to automatic sequences· geometric objects related to automatic sequences.

  7. Automatic prediction of time to failure of open pit mine slopes based on radar monitoring and inverse velocity method

    Institute of Scientific and Technical Information of China (English)

    Osasan K.S.; Stacey T.R

    2014-01-01

    Radar slope monitoring is now widely used across the world, for example, the slope stability radar (SSR) and the movement and surveying radar (MSR) are currently in use in many mines around the world. However, to fully realize the effectiveness of this radar in notifying mine personnel of an impending slope failure, a method that can confidently predict the time of failure is necessary. The model developed in this study is based on the inverse velocity method pioneered by Fukuzono in 1985. The model named the slope failure prediction model (SFPM) was validated with the displacement data from two slope failures monitored with the MSR. The model was found to be very effective in predicting the time to failure while providing adequate evacuation time once the progressive displacement stage is reached.

  8. Comparison of accuracy and completeness of data obtained from three types of automatic water-quality monitors

    Science.gov (United States)

    Katzenbach, Max

    1990-01-01

    A comparison of data (specific conductance, dissolved-oxygen concentration, temperature, and pH) collected by the U.S. Geological Survey flowthrough monitor, the U.S. Geological Survey minimonitor, and a self-contained commercial 'packaged-sensor' system indicates that the data obtained by means of the most complete of the three systems. The U.S. Geological Survey flowthrough monitor is powered by 120-volt alternating current and in a heated weather-proof shelter. A pumping system brings water from the stream to sensors clustered in a sample clustered in a sample chamber located in the shelter. This instrument measures output from the senors; data are recorded in binary-coded decimal form on a 16-channel punched-paper tape recorder tape recorder housed in the shelter. The U.S. Geological Survey's minimonitor is powered by an external battery and is housed in a weatherproof shelter. This instrument measures output of instream sensors with extension cables having underwater connectors; data are recorded in binary-coded decimal form on a 16-channel punched-paper tape recorder housed in the shelter. The packaged-sensor system also measures output of senors housed in a packages that is submerged in the stream. It has internal power supply, no moving parts, and does not requires a weatherproof shelter; data are stored are stored in solid-state memory. Minimonitors were installed at four sites in Ohio where U.S. Geological survey flowthrough were in operation. Two package-sensor systems also were assigned to each site and were alternated every two weeks. Detailed records were kept of (1) field measurements, for comparison with monitor-system data from each instrument, and (2) equipment problems that resulted in loss of data. Results of the comparisons shows that the flow-through monitor gave the most accurate and the most complete data.

  9. Note on Modern Trends in Heavy Vehicle Electrical Electronic systems

    Directory of Open Access Journals (Sweden)

    B. S. Sastry

    1982-04-01

    Full Text Available The paper presents an overview of some of the aerospace control systems that are being successfully adopted in the field of Armoured Fighting Vehicles. An automatic electronic transmission controller for an epicyclic gear box with a torque converter to select the forward and reverse speeds in a sequential logic has been developed. Transducers developed for monitoring various engine and transmission parameters are being used for Electronic Fuel Injection (EFI, variable valve timings and electronic governing.

  10. Automatic national network of radiation environmental monitoring in Mexico; Red nacional automatica de monitoreo radiologico ambiental en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Aguirre, Jaime; Delgado, Jose L.; Lopez, Manuel; Zertuche, Jorge V., E-mail: jaguirre@cnsns.gob.mx, E-mail: jldelgado@cnsns.gob.mx, E-mail: mlopez@cnsns.gob.mx, E-mail: jorge.zertuche@cnsns.gob.mx [Comision Nacional de Seguridad Nuclear y Salvaguardias (CNSNS), D.F. (Mexico). Direccion de Vigilancia Radiologica

    2013-07-01

    The Direccion de Vigilancia Radiologica (DVR) of the Comision Nacional de Seguridad Nuclear y Salvaguardias (CNSNS) de Mexico, performs several function for environmental radiation monitoring. One of these functions is the permanent monitoring of the environmental gamma radiation. For this, it implemented the Red Nacional Automatica de Monitoreo Radiologico Ambiental (RENAMORA) - the National Automated Network for Environmental Radiation Monitoring,which currently comprises 60 detector probes for gamma radiation which with a programmable system that includes information technologies, data transmission and software can send the information in real time to a primary center of data located in the facilities of CNSNS. - When the data are received, the system performs the verification and extraction of the information organized in Tables and charts, and generates a report of environmental gamma radiation dose rate average for each of the probes and for each period of time determined bu CNSNS. The RENAMORA covers the main cities and allows to establish the bases of almost the entire country, as well as to warn about abnormal situations caused by incidents or natural events generated by human activities inside or outside the country which involves radioactive materials; paying special attention to main radiological sites, such as the surroundings of the Laguna Verde Nuclear Power Plants, research centers and the radioactive waste disposal sites.

  11. Automatic Monitoring of Criteria Pollutants and Meteorological Parameters in Boundary Sites of Mexico City under QA/QC Standards

    Science.gov (United States)

    Martínez, A.; Ramos, R.; Sánchez, A.; Retama, A.; Fentanes, O.; Muñoz, R.; Mar, B.; Ruiz, L. G.; Torres, R.; Torres, A.; Martínez, J.

    2007-05-01

    MILAGRO, an extensive air quality monitoring campaign, was conducted in the Mexico City Metropolitan Area (MCMA) during March 2006, in order to assess the air pollutants transport and their influence at regional and global scales. In support of this campaign a number of criteria pollutants and meteorological parameters measurements were conducted in boundary sites of the MCMA in order to determine the surface conditions in these transition sites. The boundary sites were selected based on results from previous studies, information provided systematically by the Mexico City Ambient Air Monitoring Network (Sistema de Monitoreo Atmosférico, SIMAT), pollutants trends and meteorological and climatic factors that participate in the dispersion and transport under different ventilation scenarios. Seven mobile units and two fixed stations were deployed for the continuous determination of criteria pollutants and meteorological parameters. In order to warranty the pollutants concentrations measurements' quality and comparability, calibrations and verifications were implemented at the designated monitoring sites. Data had been analyzed with statistical tools and comparisons were made against nearby SIMAT stations. Several interesting conclusions were achieved.

  12. Automatic classification of Google Earth images for a larger scale monitoring of bush encroachment in South Africa

    Science.gov (United States)

    Ludwig, Annika; Meyer, Hanna; Nauss, Thomas

    2016-08-01

    Bush encroachment of savannas and grasslands is a common form of land degradation in the rangelands of South Africa. To assess the carrying capacity of the land and to understand underlaying processes of bush encroachment, continuous monitoring of this phenomenon is needed. The aim of this study is to provide training sites for satellite-based monitoring of bush encroachment in South Africa on a medium spatial resolution satellite sensor (e.g. MODIS or Landsat) scale. Since field surveys are time consuming and of limited spatial extent, the satellite based creation of training sites using Google Earth images is intended. Training pixels for woody vegetation and non-woody land cover were manually digitized from 50 sample Google Earth images. A Random Forests model was trained to delineate woody from non-woody pixels. The results indicate a high performance of the model (AUC = 0.97). The model was applied to a further 500 Google Earth images with a spatial extent of 250 m × 250 m. The classified images form the database of training sites which can be used for larger scale monitoring of bush encroachment in South Africa.

  13. A Multi-Scale Flood Monitoring System Based on Fully Automatic MODIS and TerraSAR-X Processing Chains

    Directory of Open Access Journals (Sweden)

    Enrico Stein

    2013-10-01

    Full Text Available A two-component fully automated flood monitoring system is described and evaluated. This is a result of combining two individual flood services that are currently under development at DLR’s (German Aerospace Center Center for Satellite based Crisis Information (ZKI to rapidly support disaster management activities. A first-phase monitoring component of the system systematically detects potential flood events on a continental scale using daily-acquired medium spatial resolution optical data from the Moderate Resolution Imaging Spectroradiometer (MODIS. A threshold set controls the activation of the second-phase crisis component of the system, which derives flood information at higher spatial detail using a Synthetic Aperture Radar (SAR based satellite mission (TerraSAR-X. The proposed activation procedure finds use in the identification of flood situations in different spatial resolutions and in the time-critical and on demand programming of SAR satellite acquisitions at an early stage of an evolving flood situation. The automated processing chains of the MODIS (MFS and the TerraSAR-X Flood Service (TFS include data pre-processing, the computation and adaptation of global auxiliary data, thematic classification, and the subsequent dissemination of flood maps using an interactive web-client. The system is operationally demonstrated and evaluated via the monitoring two recent flood events in Russia 2013 and Albania/Montenegro 2013.

  14. Research on Integrated Lightning Defending Technology of Air Automatic Monitoring Station%空气自动监测站综合防雷技术研究

    Institute of Scientific and Technical Information of China (English)

    梁铁军

    2011-01-01

    The paper analyses lightning form and its damage to electronic equipment, discusses internal and external integrated lightning defending technology on the basis of integrated lightning defending system of air automatic monitoring station of DanDong Bearing Corporation Ltd. The system is useful to decrease failure rate of monitoring equipment and hurt of person.%基于建筑物雷击风险评估方法,得出本地可能遭受到的雷击形式和雷电破坏电子设备途径。以丹东轴承有限公司空气自动监测站综合防雷系统工程设计与施工为基础,对空气自动监测站外部、内部综合防雷技术体系进行阐述,通过现代防雷技术方法,有效降低监测设备因雷击而产生的故障率、最大限度预防和减少雷击所发生的人身伤亡和国家财产损失。

  15. 试论空气自动监测系统的社会化运营监管%Discuss the Social Operation Regulation of Air Automatic Monitoring System

    Institute of Scientific and Technical Information of China (English)

    卢家春

    2014-01-01

    本文针对我国现有的空气质量自动监测系统的运行,结合我国空气质量现状,具有针对性的整理出了关于空气自动监测系统能够保质保量完成的先进经验。本文系统的解释了空气自动监测系统,也希望能够借此来推动空气自动监测系统的进一步发展。%In this article, the author aims at the operation of the existing air quality automatic monitoring system in China, combines with the present situation of Chinese air quality to sort out the advanced experience of completing the air autom-atic monitoring system with good quality. This article system explains the air automatic monitoring system, and also hopes to be able to use to promote the further development of air aut-omatic monitoring system.

  16. Calibration Method of Nickel Water Quality On-line Automatic Monitoring Instrument%镍水质在线自动监测仪校准方法

    Institute of Scientific and Technical Information of China (English)

    肖克

    2016-01-01

    通过分析镍水质在线自动监测仪工作原理及结构,探讨其计量特性和校准方法。提出了校准项目和技术指标,示值误差:当镍的质量浓度c≤0.05 mg/L时为±0.01 mg/L,当0.05 mg/L<c≤0.2 mg/L时为±10%,当c>0.2 mg/L时为±5%;重复性不大于5%;稳定性不大于5%。对示值误差测量结果不确定度进行了评定,相对扩展不确定度为1.6%(k=2)。用所建校准方法对不同厂家的监测仪进行校准试验,示值误差、重复性、稳定性满足校准项目技术指标要求。该校准方法可以用于评价镍水质在线自动监测仪的性能。%The metrological characteristics and calibration method of the nickel water quality on-line automatic monitoring instrument were discussed on the basis of analysis of its working principle and structure. The calibration items and technical specifications were put forward. The indicating value error were±0.01 mg/L,±10% and±5% at the corresponding concentration of standard solutionc≤0.05 mg/L,0.05 mg/L0.2 mg/L, respectively. The repeatability was not more than 5% while the stability was not more than 5%. The measurement uncertainty of indicating value error was evaluated,and the relative expanded uncertainty was 1.6% (k=2). The established calibration method was applied to test monitoring instruments from different manufacturers. The results indicated that value error, repeatability and stability meet the requirement of technical specifications. This method can be used for the evaluation of the performance of nickel water quality on-line automatic monitoring instrument.

  17. Using Unmanned Aerial Vehicle (UAV) for spatio-temporal monitoring of soil erosion and roughness in Chania, Crete, Greece

    Science.gov (United States)

    Alexakis, Dimitrios; Seiradakis, Kostas; Tsanis, Ioannis

    2016-04-01

    This article presents a remote sensing approach for spatio-temporal monitoring of both soil erosion and roughness using an Unmanned Aerial Vehicle (UAV). Soil erosion by water is commonly known as one of the main reasons for land degradation. Gully erosion causes considerable soil loss and soil degradation. Furthermore, quantification of soil roughness (irregularities of the soil surface due to soil texture) is important and affects surface storage and infiltration. Soil roughness is one of the most susceptible to variation in time and space characteristics and depends on different parameters such as cultivation practices and soil aggregation. A UAV equipped with a digital camera was employed to monitor soil in terms of erosion and roughness in two different study areas in Chania, Crete, Greece. The UAV followed predicted flight paths computed by the relevant flight planning software. The photogrammetric image processing enabled the development of sophisticated Digital Terrain Models (DTMs) and ortho-image mosaics with very high resolution on a sub-decimeter level. The DTMs were developed using photogrammetric processing of more than 500 images acquired with the UAV from different heights above the ground level. As the geomorphic formations can be observed from above using UAVs, shadowing effects do not generally occur and the generated point clouds have very homogeneous and high point densities. The DTMs generated from UAV were compared in terms of vertical absolute accuracies with a Global Navigation Satellite System (GNSS) survey. The developed data products were used for quantifying gully erosion and soil roughness in 3D as well as for the analysis of the surrounding areas. The significant elevation changes from multi-temporal UAV elevation data were used for estimating diachronically soil loss and sediment delivery without installing sediment traps. Concerning roughness, statistical indicators of surface elevation point measurements were estimated and various

  18. A Novel Vehicle Classification Using Embedded Strain Gauge Sensors

    Directory of Open Access Journals (Sweden)

    Qi Wang

    2008-11-01

    Full Text Available Abstract: This paper presents a new vehicle classification and develops a traffic monitoring detector to provide reliable vehicle classification to aid traffic management systems. The basic principle of this approach is based on measuring the dynamic strain caused by vehicles across pavement to obtain the corresponding vehicle parameters – wheelbase and number of axles – to then accurately classify the vehicle. A system prototype with five embedded strain sensors was developed to validate the accuracy and effectiveness of the classification method. According to the special arrangement of the sensors and the different time a vehicle arrived at the sensors one can estimate the vehicle’s speed accurately, corresponding to the estimated vehicle wheelbase and number of axles. Because of measurement errors and vehicle characteristics, there is a lot of overlap between vehicle wheelbase patterns. Therefore, directly setting up a fixed threshold for vehicle classification often leads to low-accuracy results. Using the machine learning pattern recognition method to deal with this problem is believed as one of the most effective tools. In this study, support vector machines (SVMs were used to integrate the classification features extracted from the strain sensors to automatically classify vehicles into five types, ranging from small vehicles to combination trucks, along the lines of the Federal Highway Administration vehicle classification guide. Test bench and field experiments will be introduced in this paper. Two support vector machines classification algorithms (one-against-all, one-against-one are used to classify single sensor data and multiple sensor combination data. Comparison of the two classification method results shows that the classification accuracy is very close using single data or multiple data. Our results indicate that using multiclass SVM-based fusion multiple sensor data significantly improves

  19. Ecological Assessment of Autonomy in Instrumental Activities of Daily Living in Dementia Patients by the Means of an Automatic Video Monitoring System.

    Science.gov (United States)

    König, Alexandra; Crispim-Junior, Carlos Fernando; Covella, Alvaro Gomez Uria; Bremond, Francois; Derreumaux, Alexandre; Bensadoun, Gregory; David, Renaud; Verhey, Frans; Aalten, Pauline; Robert, Philippe

    2015-01-01

    Currently, the assessment of autonomy and functional ability involves clinical rating scales. However, scales are often limited in their ability to provide objective and sensitive information. By contrast, information and communication technologies may overcome these limitations by capturing more fully functional as well as cognitive disturbances associated with Alzheimer disease (AD). We investigated the quantitative assessment of autonomy in dementia patients based not only on gait analysis but also on the participant performance on instrumental activities of daily living (IADL) automatically recognized by a video event monitoring system (EMS). Three groups of participants (healthy controls, mild cognitive impairment, and AD patients) had to carry out a standardized scenario consisting of physical tasks (single and dual task) and several IADL such as preparing a pillbox or making a phone call while being recorded. After, video sensor data were processed by an EMS that automatically extracts kinematic parameters of the participants' gait and recognizes their carried out activities. These parameters were then used for the assessment of the participants' performance levels, here referred as autonomy. Autonomy assessment was approached as classification task using artificial intelligence methods that takes as input the parameters extracted by the EMS, here referred as behavioral profile. Activities were accurately recognized by the EMS with high precision. The most accurately recognized activities were "prepare medication" with 93% and "using phone" with 89% precision. The diagnostic group classifier obtained a precision of 73.46% when combining the analyses of physical tasks with IADL. In a further analysis, the created autonomy group classifier which obtained a precision of 83.67% when combining physical tasks and IADL. Results suggest that it is possible to quantitatively assess IADL functioning supported by an EMS and that even based on the extracted data the

  20. 鱼油萃取过程自动监控系统设计%Design of Automatic Monitoring System in Fish Oil Extraction Process

    Institute of Scientific and Technical Information of China (English)

    郑业双; 刘飞; 王志国

    2013-01-01

    萃取法具有操作可连续化,生产周期短,对热敏物质破坏少,保证鱼油良好品质的优点,但目前萃取法提取鱼油的控制系统相对落后。文章在分析鱼油萃取工艺过程的基础上,根据工艺要求设计自动监控系统,整个监控系统包含上位机和下位机两个部分,上位机实现对过程的远程监控、报警显示以及数据记录等功能,下位机以PLC为核心,实现现场控制、数据采集与转换以及回路调节等功能。系统自动化程度高、操作方便、可以为企业节省大量人力成本。%Extraction method for operation can be continuous, short production cycle, less damage to heat-sensitive substances, guarantee good quality of ifsh oil beneifts, but currently used to extract ifsh oil control system is relatively backward. The article based on the analysis on ifsh oil extraction process, and automatic monitoring system is designed according to process requirements, the whole monitoring system includes epigynous machine and hypogyny machine two parts, the epigynous machine for the process of remote monitoring, alarm display and data records, and other functions, the hypogyny machine with PLC as the core, to achieve local control, data acquisition and conversion, and loop adjustment and other functions. High degree of automation systems, easy to operate, you can save a lot of labor costs for businesses.

  1. Development and implementation of an automatic integration system for fibre optic sensors in the braiding process with the objective of online-monitoring of composite structures

    Science.gov (United States)

    Hufenbach, W.; Gude, M.; Czulak, A.; Kretschmann, Martin

    2014-04-01

    Increasing economic, political and ecological pressure leads to steadily rising percentage of modern processing and manufacturing processes for fibre reinforced polymers in industrial batch production. Component weights beneath a level achievable by classic construction materials, which lead to a reduced energy and cost balance during product lifetime, justify the higher fabrication costs. However, complex quality control and failure prediction slow down the substitution by composite materials. High-resolution fibre-optic sensors (FOS), due their low diameter, high measuring point density and simple handling, show a high applicability potential for an automated sensor-integration in manufacturing processes, and therefore the online monitoring of composite products manufactured in industrial scale. Integrated sensors can be used to monitor manufacturing processes, part tests as well as the component structure during product life cycle, which simplifies allows quality control during production and the optimization of single manufacturing processes.[1;2] Furthermore, detailed failure analyses lead to a enhanced understanding of failure processes appearing in composite materials. This leads to a lower wastrel number and products of a higher value and longer product life cycle, whereby costs, material and energy are saved. This work shows an automation approach for FOS-integration in the braiding process. For that purpose a braiding wheel has been supplemented with an appliance for automatic sensor application, which has been used to manufacture preforms of high-pressure composite vessels with FOS-networks integrated between the fibre layers. All following manufacturing processes (vacuum infiltration, curing) and component tests (quasi-static pressure test, programmed delamination) were monitored with the help of the integrated sensor networks. Keywords: SHM, high-pressure composite vessel, braiding, automated sensor integration, pressure test, quality control, optic

  2. 自动化立体停车场的监控系统设计%Design of the Monitoring System of Automatic Three dimensional Parking Lot

    Institute of Scientific and Technical Information of China (English)

    刘少军; 张思雨

    2016-01-01

    Aiming at the shortcomings of traditional parking lots ,a garage monitoring system is de‐signed by using the programmable controller PLC based on an analysis of the principle of the lifting and transferring stereoscopic garage .T he monitoring of the control system uses the industrial control configu‐ration software MCGS based on the WINDOWS platform .The automatic monitoring system for parking lots can be realized through the construction of the configuration software database ,the connection of ani‐mation ,the programming and debugging of the control flow .Experiments have demonstrated that the sys‐tem has favorable market prospects and high application value due to the fact that the system has a range of advantages such as smooth operation ,reliable performance ,a friendly human computer interaction inter‐face ,and a high automation level .%针对传统停车场的不足,在分析升降横移式立体车库原理的基础上,设计了基于PLC和M CGS的车库控制监控系统。在分析系统工作原理的基础上,对其硬件结构及程序设计进行介绍。通过工控组态软件M CGS组态画面的制作、数据库的构建及脚本程序的编写、调试能够实现对自动停车场全程的实时自动监控。实验证明,系统运行顺畅,性能可靠,人机交互界面友好,自动化水平高,具有应用价值。

  3. The Ageing Effect of Mechanical Joints on the Tyre/Joint Noises Monitored by a Control Vehicle Method without Traffic Disturbance

    Directory of Open Access Journals (Sweden)

    C. K. Wong

    2013-01-01

    Full Text Available This paper studies the ageing effect of mechanical joints reflecting from the tyre/joint impacting noise by measuring the vehicle structure-borne noise change. Field data is collected applying two measurement methods suitable for newly installed and existing old expansion joints. The measurement methodology is improved by designing and applying a trailer for equipment installation. The main advantage of this method is not to disturb existing traffic by lane closure for measurement. Field measurements were conducted regularly for a study period up to 16 months after new joint replacement to monitor the variation of the structure-borne noise change inside a test vehicle while passing through mechanical joints. Empirical relationship is developed based on the field data of the roadside airborne noise change and the vehicle structure-borne noise change. The roadside tyre/joint noises could be converted using calibrated empirical formula. Key result findings include the following. (1 The vehicle structure-borne noise change is found smallest during the 3rd–6th months even lower than that measured when a new joint is installed. The structure-borne noise change then keeps increasing afterwards till the end of the study period. (2 Similar observations are found in all study cases incorporating various mechanical joint types and test vehicle types.

  4. Influences of Turbidity on the Measurement of Total Phosphorus Using Different Types of Automatic Monitoring Analyzer%浊度对不同型号总磷自动监测分析仪的影响

    Institute of Scientific and Technical Information of China (English)

    夏文文; 钟声; 郁建桥

    2015-01-01

    Water turbidity causes interferences with the monitoring of total phosphorus using automatic monitoring analyzers.Two automatic monitoring analyzers for total phosphorus with high market shares were selected and the analysis results of total phosphorus were compared with those obtained using the national standard laboratory method.The relationship between turbidity and the value of total phosphorus was analyzed, and the turbidity range that had influences on the monitoring of total phosphorus was determined for the two types of automatic monitoring analyzer.%水质浊度会对总磷自动分析仪的监测产生干扰,选取2种市场占有率较高的总磷自动分析仪,通过自动分析仪与实验室国标方法的比对监测,分析浊度值与总磷自动监测值的相关性,同时得出对2种不同型号总磷自动分析仪产生影响的浊度值范围。

  5. Operation Control and Information Management System of Shandong Province Environmental Water Quality Automatic Monitoring Network%山东省环境水质自动监测网运行管理系统研究

    Institute of Scientific and Technical Information of China (English)

    许杨; 邱晓国; 李浩; 莫红; 万黎

    2012-01-01

    文章对水质自动监测站远程监控和反控、监测数据的自动审核、现场维护行为的评判及水质自动监测网的统一管理等问题进行了研究.通过对水质自动监测站现场工控机PLC的升级改造、对各单元和部分监测仪器加装传感器,实现了对系统和仪器设备关键节点运行状态参数的全方位实时调取.根据实际需求研发了系统管理软件,实现了区域环境水质自动监测网统一的信息全方位采集与多级传输,运行状态参数的远程监控与反控,监测数据有效性的自动判别与自动审核,监测信息的在线查询发布与管理,运行维护绩效的自动评估和系统一站式管理.目前该系统在山东省得到了全面应用,保证了监测数据的准确性、可比性与时效性,为实现水质安全预警提供了技术保障,为各级政府制定环境水质改善措施提供了科学依据,收到了显著成效.%Studies and researches were done concerning issues like remote monitoring and counter-monitoring of water quality automatic monitoring station, automatic audit of monitoring data, evaluation upon onsite-maintenance behavior, as well as centralized management of water quality automatic monitoring network. The comprehensive and real-time collection of running status parameters from the system and instrument essential points can be realized through updating & rebuilding of water quality automatic monitoring station onsite public computer (PLC), and adding electrodes to each unit and part of monitoring instruments. System management software was developed based on the actual demand, which enabled the comprehensive collection and multi-level communication of unified data from regional environmental water quality automatic monitoring network, remote monitoring and counter-monitoring of the running status parameters, automatic diagnosis and audit to the effectiveness of monitoring data, online query, release and management of the

  6. MAD-MEX: Automatic Wall-to-Wall Land Cover Monitoring for the Mexican REDD-MRV Program Using All Landsat Data

    Directory of Open Access Journals (Sweden)

    Steffen Gebhardt

    2014-04-01

    Full Text Available Estimating forest area at a national scale within the United Nations program of Reducing Emissions from Deforestation and Forest Degradation (REDD is primarily based on land cover information using remote sensing technologies. Timely delivery for a country of a size like Mexico can only be achieved in a standardized and cost-effective manner by automatic image classification. This paper describes the operational land cover monitoring system for Mexico. It utilizes national-scale cartographic reference data, all available Landsat satellite imagery, and field inventory data for validation. Seven annual national land cover maps between 1993 and 2008 were produced. The classification scheme defined 9 and 12 classes at two hierarchical levels. Overall accuracies achieved were up to 76%. Tropical and temperate forest was classified with accuracy up to 78% and 82%, respectively. Although specifically designed for the needs of Mexico, the general process is suitable for other participating countries in the REDD+ program to comply with guidelines on standardization and transparency of methods and to assure comparability. However, reporting of change is ill-advised based on the annual land cover products and a combination of annual land cover and change detection algorithms is suggested.

  7. L-band automatic-gain-controlled erbium-doped fiber amplifier utilizing C-band backward-amplified spontaneous emission and electrical feedback monitor.

    Science.gov (United States)

    Shen, Jyi-Lai; Lee, Yueh-Chien; Huang, Chia-Chih

    2009-02-10

    A new L-band automatic-gain-controlled (AGC) erbium-doped fiber amplifier (EDFA) for dense wavelength-division-multiplexing transmission systems is presented, in which a single 1480 nm laser with an internal thermoelectric cooler is used as a primary pump for stable amplification. All C-band amplified spontaneous emission (ASE) is recycled by the secondary pump to enhance the gain efficiency. A fraction of the output signal is used as an electrical feedback monitor for the AGC to improve the gain-clamped (GC) flatness. Experimental results prove that the AGC EDFA has a gain flatness of better than 0.46 dB/40 nm, i.e., below 1.5%, and a higher gain of approximately 36.5 dB compared to that of approximately 35.3 dB for the conventional GC EDFA at -30 dBm input signal power. The best gain flatness of +/-0.25 dB can be achieved over the dynamic range greater than 20 dB. The dynamic range of noise figure is between 6.7 and 7.1. The 3 dB down bandwidth is more than 40 nm. Overall dynamics measurements for the AGC EDFA feedback stabilization have been carried out. The recorded corresponding rise time of 1.565 ms indicates that the system does not exhibit any overshoot of gain or ASE variation due to the signal at the beginning of the pulse.

  8. 纯电动汽车自动同步换挡系统设计%Automatic Synchronization Shift of Pure Electric Vehicle System Design and Research

    Institute of Scientific and Technical Information of China (English)

    张进; 沈安文

    2011-01-01

    The transmission of the pure electric vehicle has important sense, can improve the electric starting performance and accelerating ability, climbing performance, high-speed performance and improve the maximum mileage of electric vehicle. Through the comparison and analysis of several existing transmission advantages and disadvantages, learn these types of transmission systems based on self-5development and design of a synchronous system (AST) .the article describes in detail the internal structure of AST systems, structural design and work principle, AST system experiment platform and gear shift strategy and process to achieve, through experimental results obtained a good description of AST system, excellent performance, with high practical value.%变速器对纯电动汽车具有重要意义,可以改善电动汽车的起步性能、加速性能、爬坡性能、高速性能以及提高电动汽车最高续航里程.本文对比分析现有几种变速器的优缺点,借鉴这几种变速器系统的基础上,自行开发设计自动同步换挡变速器系统(AST),文章详细介绍AST系统的内部结构,结构设计与工作原理,AST系统的实验平台以及AST换挡策略和换挡过程实现,通过实验得到的实验结果很好的说明AST系统优异性能,具有很高的实用价值.

  9. SU-E-J-238: Monitoring Lymph Node Volumes During Radiotherapy Using Semi-Automatic Segmentation of MRI Images

    Energy Technology Data Exchange (ETDEWEB)

    Veeraraghavan, H; Tyagi, N; Riaz, N; McBride, S; Lee, N; Deasy, J [Memorial Sloan-Kettering Cancer Center, NY, NY (United States)

    2014-06-01

    Purpose: Identification and image-based monitoring of lymph nodes growing due to disease, could be an attractive alternative to prophylactic head and neck irradiation. We evaluated the accuracy of the user-interactive Grow Cut algorithm for volumetric segmentation of radiotherapy relevant lymph nodes from MRI taken weekly during radiotherapy. Method: The algorithm employs user drawn strokes in the image to volumetrically segment multiple structures of interest. We used a 3D T2-wturbo spin echo images with an isotropic resolution of 1 mm3 and FOV of 492×492×300 mm3 of head and neck cancer patients who underwent weekly MR imaging during the course of radiotherapy. Various lymph node (LN) levels (N2, N3, N4'5) were individually contoured on the weekly MR images by an expert physician and used as ground truth in our study. The segmentation results were compared with the physician drawn lymph nodes based on DICE similarity score. Results: Three head and neck patients with 6 weekly MR images were evaluated. Two patients had level 2 LN drawn and one patient had level N2, N3 and N4'5 drawn on each MR image. The algorithm took an average of a minute to segment the entire volume (512×512×300 mm3). The algorithm achieved an overall DICE similarity score of 0.78. The time taken for initializing and obtaining the volumetric mask was about 5 mins for cases with only N2 LN and about 15 mins for the case with N2,N3 and N4'5 level nodes. The longer initialization time for the latter case was due to the need for accurate user inputs to separate overlapping portions of the different LN. The standard deviation in segmentation accuracy at different time points was utmost 0.05. Conclusions: Our initial evaluation of the grow cut segmentation shows reasonably accurate and consistent volumetric segmentations of LN with minimal user effort and time.

  10. The Automatic Telescope Network (ATN)

    CERN Document Server

    Mattox, J R

    1999-01-01

    Because of the scheduled GLAST mission by NASA, there is strong scientific justification for preparation for very extensive blazar monitoring in the optical bands to exploit the opportunity to learn about blazars through the correlation of variability of the gamma-ray flux with flux at lower frequencies. Current optical facilities do not provide the required capability.Developments in technology have enabled astronomers to readily deploy automatic telescopes. The effort to create an Automatic Telescope Network (ATN) for blazar monitoring in the GLAST era is described. Other scientific applications of the networks of automatic telescopes are discussed. The potential of the ATN for science education is also discussed.

  11. Research and Development of Hybrid Electric Vehicles CAN-Bus Data Monitor and Diagnostic System through OBD-II and Android-Based Smartphones

    Directory of Open Access Journals (Sweden)

    Yalian Yang

    2013-01-01

    Full Text Available With the rapid development of the smartphone market, future cars seem to have more connections with intelligent cell phone and Internet. Intelligent transportation system (ITS and telematics system have become research focus in recent years. There is an increasing demand for remote monitoring and diagnostic system as the further research of hybrid electric vehicle (HEV goes on. In this paper, a remote controller area network bus (CAN-Bus data monitor and diagnostic system for HEV is presented using on board diagnostic version-II (OBD-II and Android-based smartphone. It is low-cost, convenient, and extensible with smartphone used in the system to realize communication with ELM327 and remote monitoring center wirelessly. The prototype of client and server is developed in Java language, and it is proved by the test that the system works stably and the collected data have practical values.

  12. Monitoring switch-type sensors and powering autonomous sensors via inductive coupling: application to removable seats in vehicles

    OpenAIRE

    Albesa Querol, Joan

    2012-01-01

    This thesis explores the feasibility of using inductive links for a vehicle application where wiring an electronic control unit (ECU) to the sensors or detectors become unfeasible or unpractical. The selected application is occupancy and belt detection in removable vehicle seats. Two ways of using inductive links are considered: 1) passive detection of the state of the seat detectors from a readout unit and 2) remote power transmission to a detection unit and subsequent data transmission by a...

  13. Comment on Gebhardt et al. MAD-MEX: Automatic Wall-to-Wall Land Cover Monitoring for the Mexican REDD-MRV Program Using All Landsat Data. Remote Sens. 2014, 6, 3923–3943

    Directory of Open Access Journals (Sweden)

    Jean-François Mas

    2016-06-01

    Full Text Available Gebhardt et al. (2014 presented the Monitoring Activity Data for the Mexican REDD+ program (MAD-MEX, an automatic nation-wide land cover monitoring system for the Mexican REDD+ MRV. Though MAD-MEX represents a valuable first effort toward establishing a national reference emissions level for the implementation of REDD+ in Mexico, in this paper, we argue that this land cover system has important limitations that may prevent it from becoming operational for REDD+ MRV. Specifically, we show that (1 the accuracy assessment of MAD-MEX land cover maps is optimistically biased; (2 the ability of MAD-MEX to monitor land cover change, including deforestation and forest degradation; is poor and (3 the use of an entirely automatic classification approach, such as that followed by MAD-MEX, is highly problematic in the case of a large and heterogeneous country like Mexico. We discuss these limitations and call into question the ability of a land cover monitoring system, such as MAD-MEX, both to elaborate a national reference emissions level and to monitor future forest cover change, as part of a REDD+ MRV system. We provide some insights with the aim of improving the development of nation-wide land cover monitoring systems in Mexico and elsewhere.

  14. 我国空气自动监测系统的现状与发展趋势%Status and Development Trend of Air Automatic Monitoring Technique in China

    Institute of Scientific and Technical Information of China (English)

    焦宝玉; 陈建文; 但德忠

    2011-01-01

    结合四川省环境空气自动监测系统的运行,从运行管理模式方面探讨了我国空气自动监测系统的发展现状,以及通过国内外环境空气评价指标的比较,探讨了现阶段中国环境空气质量评价体系的不足以及增加空气污染指数分指标的必要性.%Combined the operation of ambient air automatic monitoring systems in Sichuan, the application status of ambient air automatic monitoring, based on operation administration mode, has been discussed. And through comparing with the indexes between domestic and foreign, it discussed the lack of China's ambient air quality assessment system and the necessity of increasing air pollution sub-indexes.

  15. 氨氮自动水质监测与纳氏试剂法比对研究%Reseach on Comparison of NH3 -N Automatic Monitoring and Nessler’ s Reagent Spectrophotometric Method

    Institute of Scientific and Technical Information of China (English)

    毛红艳; 于博

    2013-01-01

    According to the management requirements of automatic monitoring station, we compare NH3 -N automatic monitoring and nessler ’ s reagent spectrophotometric method once month. This paper studies the matters needing attention in the comparison of NH3 -N.%通过对地表水样几种前处理方法的研究,找出一种适用、有效的监测方法,使得JAWA-1005氨氮水质自动仪与纳氏试剂分光光度法比对测定结果相对误差在允许的范围内,从而使水质自动监测与纳氏试剂分光光度法测定结果具有相同的精密度和准确度。

  16. Application of automatic fire monitor extinguishing system in large indoor amusement park%自动消防炮灭火系统在大型室内游乐场的应用

    Institute of Scientific and Technical Information of China (English)

    毛科峰; 张连军

    2013-01-01

    以宁波市罗蒙室内游乐场为例,对适用于大空间场所的水消防自动灭火系统进行对比分析,选用了自动消防炮灭火系统.详细介绍了自动消防炮稳高压给水系统的管网水头损失、供水压力及稳压设施技术参数等的计算过程.%Taking Ningbo Romon indoor amusement park for example,the automatic fire monitoring extinguishing system was selected after comparatively analyzing water fire extinguishing system for large-space site.The calculation process of head loss of the automatic fire monitor water supply system of stable-high pressure,the fire water supply pressure and the technical parameters of stable pressure facilities were introduced in detail.

  17. Study on Ground Automatic Identification Technology for Intelligent Vehicle Based on Vision Sensor%基于视觉传感器的自主车辆地面自动辨识技术研究

    Institute of Scientific and Technical Information of China (English)

    崔根群; 余建明; 赵娴; 赵丛琳

    2011-01-01

    The ground automatic identification technology for intelligent vehicle is iaking Leobor-Edu autonomous vehicle as a test vector and using DH-HV2003UC-T vision sensor to collect image infarmaiion of five common lane roads( cobbled road, concrete road, dirt road, grass road, tile road) , then using MATLAB image processing module to perform coding compression, recovery reconstruction, smoothing, sharpening, enhancement, feature extraction and other related processing,then using MATLAB BP neural network module to carry on pattern recognition.Through analyzing the pattern recognition result, lt shows that the objective error is 20%, the road recognition rate has reached the intended requirement in the system,and it can be universally applied in the smart vehicle or robots and other related fields.%谊自主车辆地面自动辨识技术是以Leobot-Edu自主车辆作为试验载体,并应用DH-HV2003UC-T视觉传感器对常见的5种行车路面(石子路面、水泥路面、土壤路面、草地路面、砖地路面)进行图像信息的采集,应用Matlab图像处理模块对其依次进行压缩编码、复原重建、平滑、锐化、增强、特征提取等相关处理后,再应用Matlab BP神经网络模块进行模式识别.通过对模式识别结果分析可知,网络训练目标的函数误差为20%,该系统路面识别率达到预定要求,可以在智能车辆或移动机器人等相关领域普及使用.

  18. A Study on Traction Control for Automatic Transmission Vehicle on Low-adhesion Road%自动变速车辆低附着路面牵引力控制研究

    Institute of Scientific and Technical Information of China (English)

    史俊武; 鲁统利; 李小伟; 张建武

    2011-01-01

    A new traction control system for automatic transmission vehicle is proposed based on concerted control of throttle opening and transmission gear position. In view of the non-linearity and uncertainties of slip ratio control system, the feedback linearization and sliding mode control are applied to the system by means of differential geometry theory. Furthermore, by using dynamic programming, the throttle opening of engine and the gear position of transmission, at which the required driving torque can be produced, are worked out. The simulation results indicate that the traction control system proposed is characterized by its simple structure and good performance.%提出了一种基于发动机节气门开度与变速器挡位协调控制的自动变速车辆牵引力控制系统.针对滑移率控制系统的非线性与参数不确定性,根据微分几何理论对其进行了反馈线性化并施加滑模控制.同时利用动态规划方法求得能产生所需驱动转矩的节气门开度与变速器挡位.仿真结果表明,此种牵引力控制系统具有设计简单和控制效果良好等特点.

  19. Design on Automatic Heave Compensation Hydraulic System of Remotely Operated Vehicle Based on Neuron PID Control%基于神经元PID的水下机器人自动升沉补偿液压系统设计

    Institute of Scientific and Technical Information of China (English)

    何新英; 吴家鸣

    2015-01-01

    针对母船的升沉运动会影响到带缆遥控水下机器人的安全作业和收放功能,提出了利用液压绞车进行水下机器人自动升沉补偿的方案。设计了带缆遥控水下机器人升沉补偿液压系统,控制系统采用了神经元自适应PID控制算法。并在Matlab中进行了仿真,仿真结果表明,该系统能够较好的实现水下机器人的升沉补偿运动。%The supporting ship heave motion affects the remotely operated vehicle safety operation and storage function,using hydraulic winch for automatic heave compensation of ROV was presented in this paper,The heave compensation hydraulic system of ROV has been designed, which the neuron adaptive PID control algorithm has been adopted. And has been simulate in mat lab,the simulation result show that the system can realize the ROV heave compensation movement.

  20. Study on the Quality Management Framework of Automatic Monitoring of Ambient Air%环境空气自动监测质量管理框架体系研究

    Institute of Scientific and Technical Information of China (English)

    李娟; 王湜

    2016-01-01

    According topolicies of environmental monitoring management regulations of automatic air monitoring and technical speci -fications of method standards as well as management requirements ,we investigated the overall quality management framework set up of automatic monitoring of ambient air .Quality management framework of automatic monitoring of ambient air and file management regulations were systematically established to regulate the activity of the monitoring ,to improve the rationality and accuracy of the monitoring data,and to lay a firm foundation for early warning of ambient air and treatment of air pollution for the environmental pro -tection management department .%以环境监测管理各项法规政策、空气自动监测技术规范和方法标准的技术规定及管理要求为准绳,研究搭建环境空气自动监测质量管理总框架,制定体系化的环境空气自动监测质量管理框架体系及管理文件规程,从而规范环境空气自动监测活动,提高空气自动监测数据的科学性和准确性,为环境保护管理部门实施环境空气预报预警及规划空气污染治理各项工作奠定坚实基础。

  1. 基于船舶AIS信息的可疑船只监测研究%Monitoring of Intrusive Vessels Based on an Automatic Identification System (AIS)

    Institute of Scientific and Technical Information of China (English)

    郭浩; 张晰; 安居白; 李冠宇

    2013-01-01

    中国海洋资源丰富,邻国船只时常非法航入中国领海或经济专属区.为了有效地保护和开发海洋资源,利用船舶自动识别系统(AIS)提供的船位、船速及航向等动态信息与船名、呼号、吃水及危险货物等静态信息,对某邻国船只于2012年4月在其专属经济区以及中国海域航行特征和船只特征进行分析.%Vessels from the neighboring countries often enter into the territorial waters and exclusive economic zone of China illegally.In order to protect our marine resources,this paper analyzes the characteristics and sailing features of ships from one neighboring country of China that entered the exclusive economic zone and the sea of China in April 2012.In particular,an automatic identification system (AIS) is used to collect the related information regarding ships,such as position,speed,heading,name,call sign,draft and dangerous goods carried,etc.Then,the geographic distribution,velocity and regular route pattern of vessels are used to develop a ship traffic information database.This paper provides an effective way for monitoring intrusive vessels,in order to protect China's marine rights.

  2. An assessment of the Height Above Nearest Drainage terrain descriptor for the thematic enhancement of automatic SAR-based flood monitoring services

    Science.gov (United States)

    Chow, Candace; Twele, André; Martinis, Sandro

    2016-10-01

    Flood extent maps derived from Synthetic Aperture Radar (SAR) data can communicate spatially-explicit information in a timely and cost-effective manner to support disaster management. Automated processing chains for SAR-based flood mapping have the potential to substantially reduce the critical time delay between the delivery of post-event satellite data and the subsequent provision of satellite derived crisis information to emergency management authorities. However, the accuracy of SAR-based flood mapping can vary drastically due to the prevalent land cover and topography of a given scene. While expert-based image interpretation with the consideration of contextual information can effectively isolate flood surface features, a fully-automated feature differentiation algorithm mainly based on the grey levels of a given pixel is comparatively more limited for features with similar SAR-backscattering characteristics. The inclusion of ancillary data in the automatic classification procedure can effectively reduce instances of misclassification. In this work, a near-global `Height Above Nearest Drainage' (HAND) index [10] was calculated with digital elevation data and drainage directions from the HydroSHEDS mapping project [2]. The index can be used to separate flood-prone regions from areas with a low probability of flood occurrence. Based on the HAND-index, an exclusion mask was computed to reduce water look-alikes with respect to the hydrologictopographic setting. The applicability of this near-global ancillary data set for the thematic improvement of Sentinel-1 and TerraSAR-X based services for flood and surface water monitoring has been validated both qualitatively and quantitatively. Application of a HAND-based exclusion mask resulted in improvements to the classification accuracy of SAR scenes with high amounts of water look-alikes and considerable elevation differences.

  3. ELECTROMAGNETIC BIOSPHERE POLLUTION BY MOTOR TRANSPORT (VEHICLES, ELECTRIC VEHICLES, HYBRID VEHICLES

    Directory of Open Access Journals (Sweden)

    S. Selivanov

    2009-01-01

    Full Text Available The physics of the electromagnetic field is considered. The analysis of electromagnetic radiation on the human-being, the origin of which is the vehicle the electric vehicle, the hybrid vehicle is being considered. The monitoring of electromagnetic radiation of vehicles is carried out.

  4. Research and Discussion on Quality Control of The Environment Air Automatic Monitoring%环境空气自动监测质量控制研究与探讨

    Institute of Scientific and Technical Information of China (English)

    张佳音; 李扬扬; 蒙瑞丽; 杜涛; 马震

    2014-01-01

    This text expounded?briefly the main influence factors of the environment air automatic monitoring Quality, and discussed some problems of environmental air quality monitoring in Shaanxi province. Finally,?some corresponding countermeasures and suggestions? are proposed .%简述了影响环境空气自动监测质量的主要因素,探讨了陕西省环境空气质量监测存在的主要问题,并提出了相应的对策和建议。

  5. 自动识别环境下车辆的出行矩阵估计新方法%A New Method of OD Estimation Based On Automatic Vehicle Identification Data

    Institute of Scientific and Technical Information of China (English)

    孙剑; 冯羽

    2011-01-01

    鉴于以视频牌照识别系统为代表的车辆自动识别(automatic vehicle identification,AVI)技术在我国逐步应用的现实,提出了利用AVI检测信息估计高精度车辆起讫点矩阵(OD- matrix)的新方法.该方法首先将检测的车辆信息分为4类(起讫点已知、起点或终点及部分路径已知、仅知起点或终点、仅知部分路径),然后利用第1类信息根据AVI检测误差直接扩样更新基础OD矩阵;利用第2,3,4类信息,参照粒子滤波算法思想,基于贝叶斯估计理论修正更新路段-路径流量关系,进而用蒙特卡罗随机过程确定可能路径以及OD;最后根据AVI获得的路径流量信息反向验算校正OD.根据上海市目前视频牌照识别系统的应用现状,选择以南北高架快速路为研究对象,根据牌照识别系统检测的动态车辆信息,对布设9个视频检测器的南北高架沿线17个出入口的OD进行了估计应用.结果表明,在路网仿真模型误差≤15%、AVI设施覆盖率为27.2%以及检测误差在10%的前提下,运用本方法,OD估计的总体平均相对误差仅为11.09%.该方法能充分利用AVI检测的个体车辆不完整路径信息,且计算效率高,可满足实际动态交通管理的需求.%With the development and application of video license plate recognition system which represented the automatic vehicle identification (AVI) technologies in China,a novel high resolution OD estimation method was proposed based on AVI detector information. 4 detected categories (Ox + Dy, Ox/Dy + (8), Ox/Dy、 P(8)) were divided at the first step. Then the initial OD matrix was updated by using the Ox + Dy sample information considering the AVI detector errors. Referenced by particle filter, the link-path relationship data were revised by using the last 3 categories information based on Bayesian inference and the possible trajectory and OD were determined with the Monte Carlo random process. Then the OD was corrected

  6. Vehicle Tracking for an Evasive Manoeuvres Assistant Using Low-Cost Ultrasonic Sensors

    Directory of Open Access Journals (Sweden)

    Felipe Jiménez

    2014-11-01

    Full Text Available Many driver assistance systems require knowledge of the vehicle environment. As these systems are increasing in complexity and performance, this knowledge of the environment needs to be more complete and reliable, so sensor fusion combining long, medium and short range sensors is now being used. This paper analyzes the feasibility of using ultrasonic sensors for low cost vehicle-positioning and tracking in the lane adjacent to the host vehicle in order to identify free areas around the vehicle and provide information to an automatic avoidance collision system that can perform autonomous braking and lane change manoeuvres. A laser scanner is used for the early detection of obstacles in the direction of travel while two ultrasonic sensors monitor the blind spot of the host vehicle. The results of tests on a test track demonstrate the ability of these sensors to accurately determine the kinematic variables of the obstacles encountered, despite a clear limitation in range.

  7. Vehicle tracking for an evasive manoeuvres assistant using low-cost ultrasonic sensors.

    Science.gov (United States)

    Jiménez, Felipe; Naranjo, José E; Gómez, Oscar; Anaya, José J

    2014-11-28

    Many driver assistance systems require knowledge of the vehicle environment. As these systems are increasing in complexity and performance, this knowledge of the environment needs to be more complete and reliable, so sensor fusion combining long, medium and short range sensors is now being used. This paper analyzes the feasibility of using ultrasonic sensors for low cost vehicle-positioning and tracking in the lane adjacent to the host vehicle in order to identify free areas around the vehicle and provide information to an automatic avoidance collision system that can perform autonomous braking and lane change manoeuvres. A laser scanner is used for the early detection of obstacles in the direction of travel while two ultrasonic sensors monitor the blind spot of the host vehicle. The results of tests on a test track demonstrate the ability of these sensors to accurately determine the kinematic variables of the obstacles encountered, despite a clear limitation in range.

  8. Adjustment of the Automatic Monitoring Points of Air Quality in Mengzi City%蒙自市环境空气质量自动监测点位调整研究

    Institute of Scientific and Technical Information of China (English)

    李飞

    2016-01-01

    Due to the rapid development of economy and urbanization in Mengzi,the original air quality automatic monitoring points could not meet the requirements of the urban ambient air quality monitoring any more.Therefore, it is necessary to redistribute the monitoring sites in Mengzi.According to the practical work experiences and the national relevant provisions,the present situation of ambient air quality automatic monitoring point was described as well as the shortcomings of the current distribution of the sites.The adjustment proposal of the new distribution of the monitoring sites was put forward.The feasibility of the proposal was analyzed.%选取蒙自市环境空气质量自动监测点位作为研究对象,根据实际的工作经验和国家的相关规定,叙述了蒙自市现阶段环境空气质量自动监测点位的现状,分析了现阶段环境空气质量自动监测点位存在的不足,最后提出蒙自市环境空气质量自动监测点位调整的实施方案,并对该方案进行分析得出可行结论。

  9. The use of visual cues for vehicle control and navigation

    Science.gov (United States)

    Hart, Sandra G.; Battiste, Vernol

    1991-01-01

    At least three levels of control are required to operate most vehicles: (1) inner-loop control to counteract the momentary effects of disturbances on vehicle position; (2) intermittent maneuvers to avoid obstacles, and (3) outer-loop control to maintain a planned route. Operators monitor dynamic optical relationships in their immediate surroundings to estimate momentary changes in forward, lateral, and vertical position, rates of change in speed and direction of motion, and distance from obstacles. The process of searching the external scene to find landmarks (for navigation) is intermittent and deliberate, while monitoring and responding to subtle changes in the visual scene (for vehicle control) is relatively continuous and 'automatic'. However, since operators may perform both tasks simultaneously, the dynamic optical cues available for a vehicle control task may be determined by the operator's direction of gaze for wayfinding. An attempt to relate the visual processes involved in vehicle control and wayfinding is presented. The frames of reference and information used by different operators (e.g., automobile drivers, airline pilots, and helicopter pilots) are reviewed with particular emphasis on the special problems encountered by helicopter pilots flying nap of the earth (NOE). The goal of this overview is to describe the context within which different vehicle control tasks are performed and to suggest ways in which the use of visual cues for geographical orientation might influence visually guided control activities.

  10. Development of a DC propulsion system for an electric vehicle

    Science.gov (United States)

    Kelledes, W. L.

    1984-01-01

    The suitability of the Eaton automatically shifted mechanical transaxle concept for use in a near-term dc powered electric vehicle is evaluated. A prototype dc propulsion system for a passenger electric vehicle was designed, fabricated, tested, installed in a modified Mercury Lynx vehicle and track tested at the contractor's site. The system consisted of a two-axis, three-speed, automatically-shifted mechanical transaxle, 15.2 Kw rated, separately excited traction motor, and a transistorized motor controller with a single chopper providing limited armature current below motor base speed and full range field control above base speed at up to twice rated motor current. The controller utilized a microprocessor to perform motor and vehicle speed monitoring and shift sequencing by means of solenoids applying hydraulic pressure to the transaxle clutches. Bench dynamometer and track testing was performed. Track testing showed best system efficiency for steady-state cruising speeds of 65-80 Km/Hz (40-50 mph). Test results include acceleration, steady speed and SAE J227A/D cycle energy consumption, braking tests and coast down to characterize the vehicle road load.

  11. 面向应急响应的无人机图像快速自动拼接%Fast Automatic Stitching for Images of Unmanned Aerial Vehicle in Emergency Response

    Institute of Scientific and Technical Information of China (English)

    吴俣; 余涛; 谢东海

    2013-01-01

    With the demand of emergency response, in order to obtain full cover image of remote sensing area fast, automatically and stably, this paper proposes a suitable stitching method of image sequences from unmanned aerial vehicle (UAV). A position and orientation system with low accuracy and a non-metric camera without calibration mounted on UAV can photograph the interested area to attain the image sequences and fast automatic registration. With the global ground points and the corresponding projection points, the whole optimum error equations are calculated using Levenberg-Marquardt algorithm for nonlinear iteration of the Homography matrices and unrestrained projective centers. Then, the parallel geometric seeking algorithm of stitching line is applied; image interpolation and image fusion are processed for whole automatic image outputting. Through the disaster emergency response experiment based on UAV remote sensing, the 0. 05 m resolution full cover image with less than 3 pixel of positioning accuracy are obtained from 450 images in an hour. The fast automatic algorithm proposed in this paper is appropriate for image sequences from UAV, which can provide effective technology support for emergency response.%根据应急响应的需求,为了快速、自动且稳定地获取遥感区域的全覆盖图像,提出一种直接适用于无人机序列图像的拼接方法.利用无人机平台上的低精度飞行控制系统与无标定的非量测相机获取序列图像,并进行快速自动配准;根据全局地面点在多视图像上的投影点集,基于单应矩阵和自由投影中心建立整体优化误差方程,并利用Levenberg-Marquardt非线性迭代求解;再根据并行几何定位拼接线的快速处理方法进行图像插值和融合,实现全流程自动化的图像输出.通过灾害应急响应的无人机遥感实验结果表明,在1h内处理完成450幅序列图像,获得定位精度小于3个像素的0.05m分辨率图像;文中方法

  12. GPS Fire Vehicle Monitoring and Management System Design and Research%GPS消防车辆监控管理系统设计研究

    Institute of Scientific and Technical Information of China (English)

    栾涛

    2012-01-01

    首先分析了GPS导航定位技术,然后着重分析了GPS在消防车辆调度中的应用,开发了一套以GPS技术为核心的消防车辆调度监控管理信息系统.该系统管理高效,有效地提高了数字化管理水平,能够合理调度消防车辆,提高企业管理效率,同时节约了开支,实现管理成本和运营成本量化,大大节省运营成本.%This paper first analyzes the CPS navigation and positioning technology, and then focuses on the analysis of GPS in fire fighting vehicle scheduling, develops a set to GPS technology as the core of fire vehicle scheduling and monitoring management information system, the system of efficient management, effectively improve the digital management level, to schedule fire vehicles, improve enterprise management efficiency, at the same lime, save money, to realize the management cost and the operating cost of quantification, greatly saves the operation coat.

  13. 41 CFR 102-34.75 - Who is responsible for monitoring our compliance with fuel economy standards for motor vehicles...

    Science.gov (United States)

    2010-07-01

    ....75 Public Contracts and Property Management Federal Property Management Regulations System (Continued) FEDERAL MANAGEMENT REGULATION PERSONAL PROPERTY 34-MOTOR VEHICLE MANAGEMENT Obtaining Fuel Efficient Motor... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Who is responsible...

  14. Design of Automatic Monitoring System about Closed with Double Machine Frame Hoist%双机闭式启闭机自动化监控系统设计

    Institute of Scientific and Technical Information of China (English)

    丁军; 钱钧

    2014-01-01

    武定门节制闸工程启闭机已运行近50年,存在安全性差,控制方式简单,启闭及控制设备布置分散、零乱,设备运行维护困难等隐患,故对启闭机进行更新改造,重新设计自动监控系统控制保护方式。针对现代工程管理特点,将启闭方式改为双机闭式启闭,自动监控系统采用分层布置,自动监控保护主要设计为现地和远方电气控制2种形式,实现对闸门的自动化控制,保障工程运行的可靠性。%The hoist of Wudingmen check gate has been in operation for nearly 50 years, there are many disadvantages such as poor safety, simplely control mode. The arrangement of opening and closing equipment, and controlling equipment is dispersed and messy. And the equipment is difficult to run and maintain. All of these cause serious hidden danger. Therefore, the hoist of Wudingmen check gate has to be update. The control protection mode and the automatic monitoring system of the hoist are redesigned. According to the characteristics of the modern project management, the opening and closing mode is changed to the double machine closed. The layout of the automatic monitoring system is stratified. The automatic monitoring protection is designed to be two forms as the spot electrical control and the distant electrical control to realize the automatic control of the gate and guarantee the reliability of the engineering operation.

  15. Research on algorithm of automatically recognizing andpositioning road manhole covers based on vehicle-mounted sensors%基于车载传感器的路面井盖自动定位识别算法研究

    Institute of Scientific and Technical Information of China (English)

    刘建华

    2011-01-01

    The fast recognizing and positioning of municipal manhole covers is an important problem needed to be addressed for promoting digital management of modern cities. In view of the above problem, this paper proposed an algorithm, to automatically recognize and position road manhole covers under complex background in natural scene based on vehicle-mounted sensors. Taking the elliptical geometrical characteristic of manhole cover in perspective image captured by vehicle-mounted sensors as criterion, the algorithm firstly extracted edge information by employing vector edge detection method. Secondly constructed a contour list with boundary through contour tracing, then imitated and quickly generated all the possible elliptical targets in the contour list by means of least square fitting method. Subsequently eliminated the elliptical targets without relationship corresponding to road manhole covers according to their shape features, and last formed accurate results of recognition and position. Experiment shows that generally the algorithm is able to achieve real-time manhole cover targets recognition rapidly and effectively for images conforming to quality standard of data capturing.%市政井盖快速定位与识别是提升现代城市部件空间数字化管理水平需要解决的重要问题,针对该问题提出基于车载传感器的复杂背景下路面井盖目标自动定位识别算法.该算法以车载传感器获取的透视图像中井盖所具有的椭圆形几何特征为判据,先利用矢量边缘检测方法提取边缘信息,再运用轮廓跟踪法将边缘构造成轮廓链表,然后通过最小二乘法拟合与快速生成轮廓链表中可能存在的椭圆目标,并根据井盖的形状特征排除透视图中与路面井盖无对应关系的虚假椭圆目标,最终形成高精度定位识别结果.实证研究表明,对达到数据采集质量标准的图像,在一般情况下该算法能较好地实现其中市政井盖的实时定位识别.

  16. Intelligent lunar Vehicle Infrared Tracing Algorithm for Automatic Control Strategies and Research%智能探月车红外寻迹自动控制策略研究

    Institute of Scientific and Technical Information of China (English)

    钱昕; 殷庆纵; 王栋

    2012-01-01

    In Intelligent Lunar Vehicle's infrared tracking automatic control, using reflective infrared sensor array for the analog photoelectric sensor detects the path. Process the sensor data and relative error through the detection of nonlinear analog A / D sampling, real ?time process and non-linearized the control parameters in the PID variable scale incremental control algorithm; In addition, incremental PD formula can be derived by fuzzy control technology and the sensitivity and stability of the car tracing can be improved by adjusting the parameters in programming. It has been proved by that this method can shorten response time of the lunar exploration vehicle, reduce the random interference, optimize the tracking line, effectively eliminate oscillation and slow response of turn, at the meantime it can also improve mobility.%智能探月车红外循迹自动控制中主要采用反射式红外传感器的模拟光电传感器阵列进行路径检测;通过A/D采样方式检测非线性模拟量,对传感器采样数据及相对误差进行处理,引入变尺度增量式PID控制算法,对控制参数采用实时非线性整定,实现智能闭环控制;另外,应用模糊控制技术推导增量式PD计算公式,通过编程设定可调节参数以改善小车寻迹的灵敏度和稳定性;实践证明该方法可以缩短探月车的控制响应时间,降低随机干扰,优化循迹路线,有效地克服其在行驶中易产生振荡、转弯时反应迟钝、机动性差的缺点.

  17. 输变电设备状态监测数据自动汇集技术研究与应用%Automatic Collection Technology for State Monitoring Data of Power Transmission and Transformation Equipment and Its Application

    Institute of Scientific and Technical Information of China (English)

    杨强; 谢善益; 马金宝; 范颖

    2014-01-01

    In order to establish an unified and standardized data platform for electric power equipment state monitoring and diagnosis system,a method which was based on unified information model and aimed to realize automatic collection for state monitoring data of various professional systems was studied.Firstly,a solution scheme for object coding of various data source systems and inconformity of object naming was put forward and an verification method for source system model was presented as well.Process steps of automatic data collection were stated and meanwhile,methods for automatic joint of pro-duction management system and information model of dispatching automation system,construction of online monitoring model,real-time data and alarming data collection were introduced and analyzed.Automatic collection technology was ap-plied in Guangdong Power Grid Co.,Ltd.which was effectively realizing automatic collection,comprehensive integration and unified application of mass data of production management system,energy management system and online monitoring system.%为建立电力设备状态监测诊断系统的统一化、标准化数据平台,研究了基于统一信息模型,实现来源于各专业系统的状态监测数据自动汇集的方法。首先提出各数据源系统的对象编码及对象命名不一致问题的解决方案,以及对源系统模型进行校验的方法;阐述数据自动汇集的过程步骤,介绍和分析生产管理系统与调度自动化系统信息模型自动拼接、在线监测模型创建、实时数据及告警数据汇集的方法。自动汇集技术已应用于广东电网公司,实现了广东电网生产管理系统、能量管理系统、在线监测系统的海量数据的自动汇集、全面融合、统一应用。

  18. Electric Vehicle Propulsion System

    OpenAIRE

    2014-01-01

    Electric vehicles are being considered as one of the pillar of eco-friendly solutions to overcome the problem of global pollution and radiations due to greenhouse gases. Present thesis work reports the improvement in overall performance of the propulsion system of an electric vehicle by improving autonomy and torque-speed characteristic. Electric vehicle propulsion system consists of supply and traction system, and are coordinated by the monitoring & control system. Case of light electric veh...

  19. Integrated Health Monitoring and Fast on-Line Actuator Reconfiguration Enhancement (IHM-FLARE) System for Air Vehicles Project

    Data.gov (United States)

    National Aeronautics and Space Administration — SSCI proposes to develop innovative algorithms for the integration of Health Monitoring (HM) subsystem with the existing FLARE (Fast on-Line Actuator Reconfiguration...

  20. Automatic Reading

    Institute of Scientific and Technical Information of China (English)

    胡迪

    2007-01-01

    <正>Reading is the key to school success and,like any skill,it takes practice.A child learns to walk by practising until he no longer has to think about how to put one foot in front of the other.The great athlete practises until he can play quickly,accurately and without thinking.Ed- ucators call it automaticity.

  1. 浅析污染源自动监控数据质量控制与应用%Analysis on Pollutant Source Automatic Monitoring and Controlling Data Quality Control and Its Application

    Institute of Scientific and Technical Information of China (English)

    黄梅

    2013-01-01

      As the country's economic development, industrialization and urbanization accelerated, expanded space for economic development, but the concomitant environmental pollution problems are becoming more serious and increasing pressure on resources and environment for sustainable development. The Party Central Committee and the State Council has put environmental protection on the more important strategic position, vigorously develop the pollutant source automatic monitoring system construction. This article focused on how to strengthen the quality control of pollutant source automatic monitoring data, improve data accuracy, legitimacy, in order to fully apply environmental management and full play the pollutant source automatic monitoring and controlling the effectiveness of the system.%  随着国家经济的发展,工业化和城市化加速,扩大了经济发展空间,但伴随而来的环境污染问题也日益严重,可持续发展的资源和环境压力日益加剧。党中央、国务院把环境保护摆上了更加重要的战略位置,大力发展污染源自动监控系统建设。本文主要探讨如何加强污染源自动监控数据质量控制,提高数据的准确性、合法性,以全面应用于环境管理,切实发挥污染源自动监控系统的效用。

  2. MULTI-FUNCTION VEHICLE NAVIGATION AND MONITORING SYSTEM IN URBAN AREAS%城市多功能车辆导航监控系统

    Institute of Scientific and Technical Information of China (English)

    沈雪松; 刘建业; 孙永荣; 陈武

    2005-01-01

    针对智能运输系统对车辆导航定位和综合信息采集的要求,提出了一种集成高精度车辆导航系统和车载"黑匣子"的多功能车辆导航监控系统.首先分析了该多功能系统的结构和原理,进而研究融合"蓝牙"路标辅助车辆定位的GPS/DR/MM/BB组合高精度导航定位方案和GPS/DR最优卡尔曼滤波组合算法.大量的实际跑车试验结果表明该系统方案是可行的.它不仅能够进行高精度的导航定位,同时有效地实现了"黑匣子"行驶记录功能.%A vehicle navigation and monitoring system integrated by a high precision navigation system and a vehicle black-box is studied to satisfy the demand for the intelligent transportation system (ITS). Firstly, the architecture of the system is proposed. Then the integration scheme of global positioning system/dead reckoning/bluetooth beacon/map matching (GPS/DR/BB/MM) with the bluetooth assistant positioning technology, and the algorithm of the Kalman filter for the integrated GPS/DR are investigated. Finally many field trials for principle prototypes are made. Experimental results show that the proposed integrated navigation algorithm is effective and feasible, and the function of the vehicle black-box is realized.

  3. 浅析空气质量自动监测站监控系统质控模块的应用%Application of Quality Control Module of Control System of the Automatic Air Quality Monitoring Station

    Institute of Scientific and Technical Information of China (English)

    范思铭

    2015-01-01

    This paper introduces the background and configuration method of quality control module of control system of automatic air quality monitoring station, discusses the methods of judging performance of the instrument,time control and quality control.%介绍空气质量自动监测站监控系统质控模块升级背景和配置方式;以及在运用质控模块判断仪器状态、定时质控和现场质控检验仪器性能的方法.对质控模块发展方向进行展望.

  4. Intelligent monitoring system for new energy vehicle lithium ion battery%新能源汽车锂离子电池组智能监控系统

    Institute of Scientific and Technical Information of China (English)

    林可

    2016-01-01

    随着新能源汽车的兴起,锂离子电池作为一种新型的环保电池,被认为是其主要的动力源和储能载体,而电池自燃起火等事故的频发造成极大危害。本文基于锂离子电池的特性,试对新能源汽车中的锂离子电池组智能监控系统进行相关的研究和探索。%With thedevelopment of new energy vehicles, lithium ion battery as a new environmental protection battery,is considered to be the main source of power and energy storage carrier,and frequent accidents such as battery spontaneous combustion fire caused great harm.Try this article on the basis of the characteristics of lithium ion batteries,lithium ion battery of new energy vehicles intelligent monitoring system for the related research and exploration.

  5. Chemiluminescent methods and instruments for monitoring of the atmosphere and satellite validation on board of research aircrafts and unmanned aerial vehicles

    Science.gov (United States)

    Sitnikov, Nikolay; Borisov, Yuriy; Akmulin, Dimitry; Chekulaev, Igor; Sitnikova, Vera; Ulanovsky, Alexey; Sokolov, Alexey

    The results of development of instruments based on heterophase chemiluminescence for measurements of space distribution of ozone and nitrogen oxides concentrations on board of research aircrafts and unmanned aerial vehicles carried out in Central Aerological Observatory are presented. Some results of atmospheric investigations on board of research aircrafts M55 “Geophysica” (Russia) and “Falcon” (Germany) carried out using developed instruments in frame of international projects are demonstrated. Small and low power instruments based on chemiluminescent principle for UAV are developed. The results of measurements on board of UAV are shown. The development can be used for satellite data validation, as well as operative environmental monitoring of contaminated areas in particular, chemical plants, natural and industrial disasters territories, areas and facilities for space purposes etc.

  6. Arm7 Based Evolution in Vehicle Mobility and Automation

    Directory of Open Access Journals (Sweden)

    Mr. N. S. Vaidya

    2013-09-01

    Full Text Available The “Arm7 Based Evolution In Vehicle Mobility And Automation”, various sensor is used to detect various parameters of the vehicle system like Temperature sensor is used to detect engine temperature, Light sensor is used to switch on head light at night automatically, proximity sensor are used for driver as well as driver side seat belt wearing information, figure print sensor are used to open the vehicle as well as start the car. Micro serial data card reader is used here to work as a black box of the vehicle, whenever accident happen it can give all the last information which is stored in to memory card to the investigator, which is easy to detect the cause of accident. The smartness of this vehicle is to tell all the information or sensor output data audibly to the vehicle owner or driver and driver side seat passenger. All the things can be controlled by one system which is ARM7 and information is also displayed on LCD monitor

  7. RESEARCH ON AUTOMATIC MONITORING TECHNIQUE OF PIPE REPLACED BY BOX CULVERT JACKING PROCESS%箱涵顶进置换管幕顶推过程自动测量技术研究

    Institute of Scientific and Technical Information of China (English)

    潘国荣; 宋蕴璞; 李怀锋; 张鹏

    2012-01-01

    结合上海金山既有铁路下顶进公路箱涵工程,介绍以自动全站仪为主的智能导向系统的原理及关键技术.实用表明,该系统在实际施工中具有可靠性强、系统运行稳定、测量精度高的特点,可以在恶劣的施工环境中正常运行.%Automatic real - time guidance measurement is the key to modern construction measurement. Nowa-days, in China the new underground 3D traffic engineering method of pipe replaced by box culvert jacking is used, but the manual measurement can not meet the requirement of real-time monitoring. So a set of Total Station-based intelligent automatic guidance system has been developed thus could achieve the measurement automatically and im-prove work efficiency greatly. The principle and key technology of this intelligent guidance system is introduced. In the same time, combined with successful application of culvert jacking highway in the existing railway project in Shanghai Jinshan, this system proved practical and excellent with higher reliability and accuracy.

  8. Protocols for vegetation and habitat monitoring with unmanned aerial vehicles: linking research to management on US public lands

    Science.gov (United States)

    Background/Question/Methods: Monitoring of the condition and trend of natural resources is critical for determining effectiveness of management actions and understanding ecosystem responses to broad-scale processes like climate change. While broad-scale remote sensing has generally improved the abi...

  9. STUDY ON SHIFT SCHEDULE OF AUTOMATIC TRANSMISSION TO IMPROVE ENGINEERING VEHICULAR EFFICIENCY

    Institute of Scientific and Technical Information of China (English)

    Gong Jie; Zhao Dingxuan; Huang Haidong; Gong Wenbin; Chen Ying

    2004-01-01

    New shift schedule for automatic transmission is proposed from the point of view of saving energy.The bench-test of automatic shift adopting this shift schedule is done on automatic transmission's test-bed.The experimental results show the shift schedule is correct.This shift schedule has enriched the theory of vehicle automatic maneuvering and will improve the efficiency of hydrodynamic drive system of the vehicle.

  10. Monitoring of heavy metal levels in roadside dusts of Thessaloniki, Greece in relation to motor vehicle traffic density and flow.

    Science.gov (United States)

    Ewen, Caroline; Anagnostopoulou, Maria A; Ward, Neil I

    2009-10-01

    In recent years, the level of heavy metal pollution in urban areas has been of considerable concern. The principal source has been attributed to the motor vehicle and increasing inner city congestion, which has lead to a change and enlargement of transport stop-start zones. These areas of high traffic density are associated with an increased release of heavy metals into the adjacent residential or commercial areas. Seventy-five roadside dust samples were collected throughout the inner city and by-pass motorway areas of Thessaloniki, Northern Greece. Samples were taken from arterial, major and minor roads, as well as the ring road, to compare and contrast the levels of heavy metals, namely Cu, Zn, Cd, Mn and Pb. Flame Atomic Absorption Spectroscopy (FAAS) was developed to quantitatively determine concentrations of both total element and geochemical fractionation, within the two dust particulate fraction sizes congestion/stop-start traffic patterns did influence and have led to increased levels of heavy metal deposition along inner city roads compared to levels observed on the new relief ring road. Dust particulate fraction sizes were only found to show statistically significant differences in cadmium and manganese, at the probability P 0.05 or 95% confidence limit. Road type was seen to have little affect on cadmium and manganese, though lead, copper and zinc were all found to show higher levels on the inner city routes. This can be related back to the wear-and-tear of vehicle components as a result of the stop-start traffic patterns (brake pads etc). Both Pb and Zn have shown to be in chemical forms that are bio available to ecosystems.

  11. 光功率远程实时自动监测方法研究及实现%Method research and realization of optical power remote real-time automatic monitoring

    Institute of Scientific and Technical Information of China (English)

    易丛琴; 宋国强

    2011-01-01

    Remote real-time monitoring of optical power is one of the important methods of fiber transmission network remote real-time monitor, may monitor performance deterioration of fiber network which caused by the failure of fiber and optical cable.Realize the optical power remote monitoring of Agilent 86142B optical spectrum analyzer. Connect Agilent 86142B optical spectrum analyzer with the computer by GBIP interface card, using object-oriented programming method to finish the optical power remote automatic monitoring.%光功率远程实时监测对光纤光缆故障导致光纤网络性能恶化起到监控作用,是光纤传输网远程实时监控的重要手段之一.实现了安捷伦86142B光谱分析仪光功率测试的远程实时监测.安捷伦86142B光谱分析仪通过GBIP接口卡与计算机的PCI接口相连,采用面向对象的方法编程实现光功率的远程自动监测.

  12. 山东省废水污染源自动监测监控系统的设计与应用%Design and Application of the Automatic Monitoring System for Wastewater Source in Shandong Province

    Institute of Scientific and Technical Information of China (English)

    吴云; 王兴武; 李彦; 范素芳

    2012-01-01

    In order to realize real-time online monitoring of the wastewater source enterprise, manage and issue its information, this paper comprehensively used automatic control, embedded data acquisition and transmission, distributed computing and data processing, geographic information system, etc. to develop automatic monitoring system of the wastewatcr source in Shandong Province. This system incorporates the automatic monitoring information acquisition, transmission and daily work as an organic whole. The system realizes not only the continuous online monitoring of wastewater source enterprise, but also the deep excavation and utilization to monitoring information. It provides the scientific and objective basis for energy saving, consumption reduction, carbon emission reduction, total amount control and other environmental management work, and meets the requirements of environment management and related departments to wastewater source management.%为了实现对废水污染源企业的实时在线监控,对监测信息进行管理和发布,综合利用自动控制、嵌入式数据采集与传输、分布式计算与数据处理、地理信息系统等技术,研制了山东省废水污染源自动监测监控系统.该系统集全省废水污染源企业自动监测信息的采集、传输和日常处理工作为一体,不仅实现了对废水污染源企业的连续在线监控,并且对监测数据进行深度挖掘与利用,为节能、降耗、减排、总量控制等环境管理工作提供了科学和客观的依据,满足环境管理及相关部门对废水污染源管理的要求.

  13. 基于Google Maps的车辆监控系统关键技术研究%A Research of the Key Technique of Vehicle Monitoring System Based on Google Maps

    Institute of Scientific and Technical Information of China (English)

    吴晓彬; 周超

    2012-01-01

    This paper introduces the key technique of vehicle monitoring system based on WebGIS,discusses the advantages of constructing vehicle monitoring system based on Google Maps,and realizes vehicle positioning,position query,trace playback and asynchronous data communication using Google Maps and Ajax.%介绍了基于WebGIS的车辆监控系统关键技术,讨论了基于Google Maps构建车辆监控系统的优越性,利用Google Maps和Ajax实现了车辆定位,位置查询,轨迹回放,异步数据通信等关键技术。

  14. The computer system for editing the daily monitor report automatically in earthquake precursory network%地震前兆台网运行监控日报自动编辑系统

    Institute of Scientific and Technical Information of China (English)

    陈彩虹; 郭皓; 陈懿德; 刘坚刚

    2012-01-01

    Using the Visual Studio 2010 development tools combined with the actual situation of the earthquake precursory network management in Fujian Province, we build a set of earthquake precursory network monitoring daily automatic editing system in Fujian Province. The system uses an open design mode which can make the precursory network collected daily observation logs for automatic editing, and forms regular daily report monitors with achieving the efficient operation of the human-computer interaction.%应用Visual Studio 2010开发工具,结合福建省地震前兆观测台网管理的实际情况,研发一套福建省地震前兆台网运行监控日报自动编辑系统.该系统采用开放式的设计模式,可将前兆观测台网每日收集的观测日志进行自动编辑,形成符合规范的监控日报,实现人机交互的有效操作.

  15. Automatic localization of backscattering events due to particulate in urban areas

    Science.gov (United States)

    Gaudio, P.; Gelfusa, M.; Malizia, Andrea; Parracino, Stefano; Richetta, M.; Murari, A.; Vega, J.

    2014-10-01

    Particulate matter (PM), emitted by vehicles in urban traffic, can greatly affect environment air quality and have direct implications on both human health and infrastructure integrity. The consequences for society are relevant and can impact also on national health. Limits and thresholds of pollutants emitted by vehicles are typically regulated by government agencies. In the last few years, the interest in PM emissions has grown substantially due to both air quality issues and global warming. Lidar-Dial techniques are widely recognized as a costeffective alternative to monitor large regions of the atmosphere. To maximize the effectiveness of the measurements and to guarantee reliable, automatic monitoring of large areas, new data analysis techniques are required. In this paper, an original tool, the Universal Multi-Event Locator (UMEL), is applied to the problem of automatically indentifying the time location of peaks in Lidar measurements for the detection of particulate matter emitted by anthropogenic sources like vehicles. The method developed is based on Support Vector Regression and presents various advantages with respect to more traditional techniques. In particular, UMEL is based on the morphological properties of the signals and therefore the method is insensitive to the details of the noise present in the detection system. The approach is also fully general, purely software and can therefore be applied to a large variety of problems without any additional cost. The potential of the proposed technique is exemplified with the help of data acquired during an experimental campaign in the field in Rome.

  16. Rapid, Repeat-sample Monitoring of Crustal Deformations and Environmental Phenomena with the Uninhabited Aerial Vehicle Synthetic Aperture Radar

    Science.gov (United States)

    Smith, Robert C.

    2006-01-01

    The Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) is a precision repeat-pass Interferometric Synthetic Aperture Radar (InSAR) mission being developed by the Jet Propulsion Laboratory and the Dryden Flight Research Center in support of NASA s Science Mission Directorate. UAVSAR's unique ability to fly a repeatable flight path, along with an electronically steerable array, allows interferometric data to be obtained with accuracies measured in millimeters. Deploying the radar on an airborne platform will also allow for radar images to be collected and compared with images from the same area taken hours or even years later - providing for long-term trending and near real-time notification of changes and deformations. UAVSAR s data processing algorithms will provide for near-real time data reduction providing disaster planning and response teams with highly accurate data to aid in the prediction of, and response to, natural phenomena. UAVSAR data can be applied to increasing our understanding of the processes behind solid earth, cryosphere, carbon cycle and other areas of interest in earth science. Technologies developed for UAVSAR may also be applicable to a future earth-orbiting InSAR mission and possibly for missions to the Moon or Mars. The UAVSAR is expected to fly on a Gulfstream III aircraft this winter, followed by a flight test program lasting until the second half of 2007. Following radar calibration and data reduction activities, the platform will be ready for science users in the summer of 2008.

  17. High-Throughput 3-D Monitoring of Agricultural-Tree Plantations with Unmanned Aerial Vehicle (UAV Technology.

    Directory of Open Access Journals (Sweden)

    Jorge Torres-Sánchez

    Full Text Available The geometric features of agricultural trees such as canopy area, tree height and crown volume provide useful information about plantation status and crop production. However, these variables are mostly estimated after a time-consuming and hard field work and applying equations that treat the trees as geometric solids, which produce inconsistent results. As an alternative, this work presents an innovative procedure for computing the 3-dimensional geometric features of individual trees and tree-rows by applying two consecutive phases: 1 generation of Digital Surface Models with Unmanned Aerial Vehicle (UAV technology and 2 use of object-based image analysis techniques. Our UAV-based procedure produced successful results both in single-tree and in tree-row plantations, reporting up to 97% accuracy on area quantification and minimal deviations compared to in-field estimations of tree heights and crown volumes. The maps generated could be used to understand the linkages between tree grown and field-related factors or to optimize crop management operations in the context of precision agriculture with relevant agro-environmental implications.

  18. High-Throughput 3-D Monitoring of Agricultural-Tree Plantations with Unmanned Aerial Vehicle (UAV) Technology.

    Science.gov (United States)

    Torres-Sánchez, Jorge; López-Granados, Francisca; Serrano, Nicolás; Arquero, Octavio; Peña, José M

    2015-01-01

    The geometric features of agricultural trees such as canopy area, tree height and crown volume provide useful information about plantation status and crop production. However, these variables are mostly estimated after a time-consuming and hard field work and applying equations that treat the trees as geometric solids, which produce inconsistent results. As an alternative, this work presents an innovative procedure for computing the 3-dimensional geometric features of individual trees and tree-rows by applying two consecutive phases: 1) generation of Digital Surface Models with Unmanned Aerial Vehicle (UAV) technology and 2) use of object-based image analysis techniques. Our UAV-based procedure produced successful results both in single-tree and in tree-row plantations, reporting up to 97% accuracy on area quantification and minimal deviations compared to in-field estimations of tree heights and crown volumes. The maps generated could be used to understand the linkages between tree grown and field-related factors or to optimize crop management operations in the context of precision agriculture with relevant agro-environmental implications.

  19. Monitoring the invasion of Spartina alterniflora using very high resolution unmanned aerial vehicle imagery in Beihai, Guangxi (China).

    Science.gov (United States)

    Wan, Huawei; Wang, Qiao; Jiang, Dong; Fu, Jingying; Yang, Yipeng; Liu, Xiaoman

    2014-01-01

    Spartina alterniflora was introduced to Beihai, Guangxi (China), for ecological engineering purposes in 1979. However, the exceptional adaptability and reproductive ability of this species have led to its extensive dispersal into other habitats, where it has had a negative impact on native species and threatens the local mangrove and mudflat ecosystems. To obtain the distribution and spread of Spartina alterniflora, we collected HJ-1 CCD imagery from 2009 and 2011 and very high resolution (VHR) imagery from the unmanned aerial vehicle (UAV). The invasion area of Spartina alterniflora was 357.2 ha in 2011, which increased by 19.07% compared with the area in 2009. A field survey was conducted for verification and the total accuracy was 94.0%. The results of this paper show that VHR imagery can provide details on distribution, progress, and early detection of Spartina alterniflora invasion. OBIA, object based image analysis for remote sensing (RS) detection method, can enable control measures to be more effective, accurate, and less expensive than a field survey of the invasive population.

  20. Monitoring the Invasion of Spartina alterniflora Using Very High Resolution Unmanned Aerial Vehicle Imagery in Beihai, Guangxi (China

    Directory of Open Access Journals (Sweden)

    Huawei Wan

    2014-01-01

    Full Text Available Spartina alterniflora was introduced to Beihai, Guangxi (China, for ecological engineering purposes in 1979. However, the exceptional adaptability and reproductive ability of this species have led to its extensive dispersal into other habitats, where it has had a negative impact on native species and threatens the local mangrove and mudflat ecosystems. To obtain the distribution and spread of Spartina alterniflora, we collected HJ-1 CCD imagery from 2009 and 2011 and very high resolution (VHR imagery from the unmanned aerial vehicle (UAV. The invasion area of Spartina alterniflora was 357.2 ha in 2011, which increased by 19.07% compared with the area in 2009. A field survey was conducted for verification and the total accuracy was 94.0%. The results of this paper show that VHR imagery can provide details on distribution, progress, and early detection of Spartina alterniflora invasion. OBIA, object based image analysis for remote sensing (RS detection method, can enable control measures to be more effective, accurate, and less expensive than a field survey of the invasive population.

  1. Monitoring Inflation and Emplacement During the 2014-2015 Kilauea Lava Flow With an Unmanned Aerial Vehicle

    Science.gov (United States)

    Perroy, R. L.; Turner, N.; Hon, K. A.; Rasgado, V.

    2015-12-01

    Unmanned aerial vehicles (UAVs) provide a powerful new tool for collecting high resolution on-demand spatial data over volcanic eruptions and other active geomorphic processes. These data can be used to improve hazard forecasts and emergency response efforts, and also allow users to economically and safely observe and quantify lava flow inflation and emplacement on spatially and temporally useful scales. We used a small fixed-wing UAV with a modified point-and-shoot camera to repeatedly map the active front of the 2014-2015 Kīlauea lava flow over a one-month period in late 2014, at times with a two-hour repeat interval. An additional subsequent flight was added in July, 2015. We used the imagery from these flights to generate a time-series of 5-cm resolution RGB and near-infrared orthoimagery mosaics and associated digital surface models using structure from motion. Survey-grade positional control was provided by ground control points with differential GPS. Two topographic transects were repeatedly surveyed across the flow surface, contemporaneously with UAV flights, to independently confirm topographic changes observed in the UAV-derived surface models. Vertical errors were generally 10 cm. Inside our 50 hectare study site, the flow advanced at a rate of 0.47 hectares/day during the first three weeks of observations before abruptly stalling out inflation >4 m. New outbreak areas, both on the existing flow surface and along the flow margins, were readily mapped across the study area. We detected sinuous growing inflation ridges within the flow surface that correlated with subsequent outbreaks of new lava, suggesting that repeat UAV flights can provide a means of better predicting pahoehoe lava flow behavior over flat or uneven topography. Our results show that UAVs can generate accurate and digital surface models quickly and inexpensively over rapidly changing active pahoehoe lava flows.

  2. 车辆状态监测平台的前端设计与实现%Front-end Design and Implementation of Platform for Vehicle State Monitoring

    Institute of Scientific and Technical Information of China (English)

    闫蓬; 陈宇峰; 张金亮; 张涛

    2015-01-01

    The platform architecture of the vehicle state monitoring was analyzed and designed based on MVC(Model-View-Controller)design pattern. The front end of the platform was designed and imple⁃mented by optimized technologies according to the requirements. The fast dynamic web page loading and web page segmentation design were achieved by JSP(Java Server Pages), AJAX(Asynchronous JavaScript and XML)and Div. The lightweight display of vehicle states was implemented by JS(JavaS⁃cript)plug-in components, including jQuery easyUI and Highcharts. The results show that the platform can achieve the dynamic web page display and fast pages loading, as well as the decrease of the cost of the design and implementation of the front end.%采用MVC(Model-View-Controller)设计模式,分析设计了车辆状态监测平台架构,根据功能需求对平台前端进行了优化设计和实现,即结合JSP(Java Server Pages)、AJAX(Asynchronous JavaScript and XML)、Div等技术实现快速动态网页加载、网页分块设计等功能,并采用jQuery easyUI与Highcharts等JS(JavaScript)插件实现车辆状态监测数据的轻量化展示。结果表明:本平台前端设计能够达到页面动态显示、页面加载速度更快的效果,降低了前端设计开发成本。

  3. STUDY ON SHIFT SCHEDULE AND SIMULATION OF AUTOMATIC TRANSMISSION

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    From the point of view of saving energy, a new shift schedule and auto-controlling strategy for automatic transmission are proposed. In order to verify this shift schedule,a simulation program using a software package of Matlab/Simulink is developed. The simulation results show the shift schedule is correct. This shift schedule has enriched the theory of vehicle automatic maneuvering and will improve the efficiency of hydrodynanic drive system of the vehicle.

  4. Karst show caves – how DTN technology as used in space assists automatic environmental monitoring and tourist protection – experiment in Postojna cave

    Directory of Open Access Journals (Sweden)

    F. Gabrovšek

    2013-10-01

    Full Text Available The paper presents an experiment demonstrating a novel and successful application of Delay- and Disruption-Tolerant Networking (DTN technology for automatic data transfer in a karst cave Early Warning and Measuring System. The experiment took place inside the Postojna Cave in Slovenia, which is open to tourists. Several automatic meteorological measuring stations are set up inside the cave, as an adjunct to the surveillance infrastructure; the regular data transfer provided by the DTN technology allows the surveillance system to take on the role of an Early Warning System (EWS. One of the stations is set up alongside the railway tracks, which allows the tourist to travel inside the cave by train. The experiment was carried out by placing a DTN "data mule" (a DTN-enabled computer with WiFi connection on the train and by upgrading the meteorological station with a DTN-enabled WiFi transmission system. When the data mule is in the wireless drive-by mode, it collects measurement data from the station over a period of several seconds as the train passes the stationary equipment, and delivers data at the final train station by the cave entrance. This paper describes an overview of the experimental equipment and organisation allowing the use of a DTN system for data collection and an EWS inside karst caves where there is a regular traffic of tourists and researchers.

  5. Vehicle to Vehicle Services

    DEFF Research Database (Denmark)

    Brønsted, Jeppe Rørbæk

    2008-01-01

    , mobility, and availability of services. The dissertation consists of two parts. Part I gives an overview of service oriented architecture for pervasive computing systems and describes the contributions of the publications listed in part II. We investigate architecture for vehicular technology applications......As computing devices, sensors, and actuators pervade our surroundings, new applications emerge with accompanying research challenges. In the transportation domain vehicles are being linked by wireless communication and equipped with an array of sensors and actuators that make is possible to provide...... location aware infotainment, increase safety, and lessen environmental strain. This dissertation is about service oriented architecture for pervasive computing with an emphasis on vehicle to vehicle applications. If devices are exposed as services, applications can be created by composing a set of services...

  6. Vehicle monitoring under Vehicular Ad-Hoc Networks (VANET) parameters employing illumination invariant correlation filters for the Pakistan motorway police

    Science.gov (United States)

    Gardezi, A.; Umer, T.; Butt, F.; Young, R. C. D.; Chatwin, C. R.

    2016-04-01

    A spatial domain optimal trade-off Maximum Average Correlation Height (SPOT-MACH) filter has been previously developed and shown to have advantages over frequency domain implementations in that it can be made locally adaptive to spatial variations in the input image background clutter and normalised for local intensity changes. The main concern for using the SPOT-MACH is its computationally intensive nature. However in the past enhancements techniques were proposed for the SPOT-MACH to make its execution time comparable to its frequency domain counterpart. In this paper a novel approach is discussed which uses VANET parameters coupled with the SPOT-MACH in order to minimise the extensive processing of the large video dataset acquired from the Pakistan motorways surveillance system. The use of VANET parameters gives us an estimation criterion of the flow of traffic on the Pakistan motorway network and acts as a precursor to the training algorithm. The use of VANET in this scenario would contribute heavily towards the computational complexity minimization of the proposed monitoring system.

  7. The automatic heavy metals monitoring system of water based on linear sweep stripping voltammetry%基于溶出伏安法的水质重金属自动监测系统

    Institute of Scientific and Technical Information of China (English)

    赵学亮; 史云

    2011-01-01

    An automatic monitoring system is developed for detecting heavy metals in water, based on linear sweep stripping voltammetry. Automatic determination of trace lead, zinc, arsenic and antimony are realized. The hardware and software design is introduced. Meanwhile, the recognition and correction method of false point, quantitative analysis method and parameter configuration of accumulation potential etc are introduced in detail. The result of experimental test shows that the system features lower detection limit, quick response and high automation etc, and has wide application prospect.%基于线性扫描溶出伏安法研制了一套水质重金属自动监测系统,实现了水中铅、锌、砷、锑重金属元素的自动监测.介绍了系统的硬、软件设计,详细阐述了数据采集中虚假点识别和纠正算法、定量分析方法和富集电位等参数的配置.实验表明,该仪器具有检出限低、响应快、自动化程度高等优点,具有一定应用前景.

  8. 浅谈空气质量自动监测系统的准确度审核%A Discussion on Accuracy Audit of Air Quality Automatic Monitoring System

    Institute of Scientific and Technical Information of China (English)

    袁鸾; 刘俊; 师建中

    2012-01-01

    Take the regional air monitoring network of the Pearl River Delta as example, the paper introduces the accuracy audit of the air quality automatic monitoring system, which mainly includes the contents, methods, steps, data processing, effective targets and so on. The article also presents the common problems of the accuracy audit and their causes, based on the continuous 7 - year working experience of the regional monitoring network.%以粤港珠江三角洲区域空气监控网络为例,介绍了空气质量自动监测系统准确度审核的内容、方法、步骤、数据处理、成效目标等,并结合粤港空气网连续7a进行准确度审核工作的经验,对审核时常见的问题及原因进行了分析。

  9. 汽车自动变速器故障诊断专家系统的研究%Research on the Fault Diagnoses Expert System of Vehicle Automatic Transmission

    Institute of Scientific and Technical Information of China (English)

    蒋鸣雷

    2013-01-01

    Automatic transmission is a system integrating the machine, electricity and liquid. The fault diagnosis of automatic transmission is very dif icult. At present, the fault diagnosis expert system is the development direction of automatic transmission diagnostic technology. By using the production rule and the frame representation, knowledge base and the fault tree of automatic transmission is are constructed, and the expert system is designed by applying forward reasoning mechanism. The fault diagnosis expert system of automatic transmission is developed by using Visual Basic 6 and Microsoft Access 2003 as the programming language.%  汽车自动变速器是集机、电、液于一体的系统,其故障诊断难度大,故障诊断专家系统是目前汽车自动变速器故障诊断技术的发展方向。利用产生式规则和框架表示法构建知识库,建立自动变速器工作异常故障树并应用正向推理机制对专家系统进行了设计,以Visual Basic 6.0、Microsoft Access 2003为编程语言开发了自动变速器故障诊断专家系统。

  10. 生产用环境参数自动监测系统软件的设计与实现%Software design and implementation about automatic monitoring system of environmental parameters for production

    Institute of Scientific and Technical Information of China (English)

    吴军伟; 林平分

    2012-01-01

    分析了一个基于C8051单片机的生产用环境参数自动监测系统软件的设计原理和实现过程,同时给出了系统的结构、工作原理以及上、中、下位机软件的详细设计方法。%The software design principle and implementation process of C8051 microcontroller-based automatic monitoring system of environmental parameters for production are analyzed. The system structure, working principle and the design of upper, middle and lower computer software are proposed.

  11. PLC在钢坯温度自动监控系统中的应用%The Application of PLC in Automatic TemperatureMonitoring System of Steel Billet

    Institute of Scientific and Technical Information of China (English)

    沈昱明; 陈彦; 王红

    2001-01-01

    提出了一种以PC+PLC结构组成的钢坯温度自动监控系统,并对该系统的构成、功能作了介绍。较详细地讨论了系统中PLC的程序设计,包括对AD模块的编程技术;给出了相应的PLC梯形图程序%An automatic temperature monitoring system composed of PC+PLC is stated. The composition and the functions of the system are introduced. The program design for PLC in this system and the programming technology for the AD module is presented in detail. The ladder logic program of PLC is given.

  12. AUTOMATIC MONITORING OF MADALING GEOLOGICAL DISASTER ON DUYUN,GUIZHOU PROVINCE%贵州都匀马达岭地质灾害链的自动化监测

    Institute of Scientific and Technical Information of China (English)

    李禹霏; 陈世昌; 徐湘涛

    2014-01-01

    贵州省都匀市马达岭地灾体自2003年起间歇发生小规模崩塌,2006年5月18日持续降雨诱发大规模滑坡。崩滑体产生的碎屑流被采空区内蓄积的老窑水卷携并铲刮沟道残坡积物冲向下游形成泥石流。该地质灾害由崩塌、滑坡以及次生泥石流所组成,呈现连锁反应,形成了崩滑流灾害链。以贵州省马达岭地质灾害链为研究对象,基于现场地质环境条件调研和地质灾害链发育规律研究,确定以雨量、相对位移、倾角、渗压水头、泥位、次声为监测指标,在崩滑体后缘和泥石流沟口部位分别布置了相应的自动化监测仪器,形成了集自动采集、无线传输、数据解析、分析决策和预警预报为一体的地质灾害链自动化监测系统。监测系统运行状况显示,该监测系统能够较好地反映该地质灾害链的变形特征,可为该地质灾害链的预警预报提供技术支撑。%Small collapses had happened intermittently at Madaling,Duyun in Guizhou province since 2003.A large-scale landslide happened on May 18th,2006 due to continuous rainfall.The debris,caused by slump-mass, rolled by the water released from gob,scraped the residual slope wash of the gull,which forms the mud-rock flow. Such kind of geo-hazard,presenting as chain reaction,is composed of the collapse,landslide and secondary flow, and forms a disaster chain of collapse landslide and debris flow.This paper takes this Madaling geological disaster chain as the study object.It is based on the regional environmental geological survey and research of regularity of geological disaster chain.It takes rainfall,relative displacement,obliquity,osmotic pressure water head,mud level,infrasound as the monitoring indexes.Automatic monitoring stations are set up at trailing edge of collapse body and mouth of debris flow.It forms an automatic monitoring system by integrating automatic collection,wireless transmission

  13. A REVIEW OF COMPUTER VISION SYSTEM FOR THE VEHICLE IDENTIFICATION AND CLASSIFICATION FROM ONLINE AND OFFLINE VIDEOS

    Directory of Open Access Journals (Sweden)

    Baljit Singh Mokha

    2015-10-01

    Full Text Available The traffic on the roads is increasing day by day. There is dire need of developing an automation system that can effectively manage and control the traffic on roads. The traffic data of multiple vehicle types on roads is also important for taking various decisions related to traffic. A video based traffic data collection system for multiple vehicle types is helpful for monitoring vehicles under homogenous and heterogeneous traffic conditions. In this paper, we have studied different methods for the identification, classification and counting vehicles from online and offline videos in India as well as other countries. The paper also discusses the various applications of video based automatic traffic control system. The various challenges faced by the researchers for developing such systems are also discussed.

  14. Control design and implementation for a line tracker vehicle

    OpenAIRE

    Prats Martinho, Ivan Odair

    2016-01-01

    The aim of this project is to implement control algorithms in a line tracker vehicle. The vehicle should be built and controlled to track a path and the evaluation of the different control performances should be reported. The main goal of this work is to build a two-wheeled robot emulating a vehicle in a road. The aim of the overall project is to apply control techniques to different scenarios of communicated vehicles, such as: platooning, autonomous vehicles, overtaking maneuvers, automat...

  15. Failure of classical traffic flow theories: Stochastic highway capacity and automatic driving

    Science.gov (United States)

    Kerner, Boris S.

    2016-05-01

    In a mini-review Kerner (2013) it has been shown that classical traffic flow theories and models failed to explain empirical traffic breakdown - a phase transition from metastable free flow to synchronized flow at highway bottlenecks. The main objective of this mini-review is to study the consequence of this failure of classical traffic-flow theories for an analysis of empirical stochastic highway capacity as well as for the effect of automatic driving vehicles and cooperative driving on traffic flow. To reach this goal, we show a deep connection between the understanding of empirical stochastic highway capacity and a reliable analysis of automatic driving vehicles in traffic flow. With the use of simulations in the framework of three-phase traffic theory, a probabilistic analysis of the effect of automatic driving vehicles on a mixture traffic flow consisting of a random distribution of automatic driving and manual driving vehicles has been made. We have found that the parameters of automatic driving vehicles can either decrease or increase the probability of the breakdown. The increase in the probability of traffic breakdown, i.e., the deterioration of the performance of the traffic system can occur already at a small percentage (about 5%) of automatic driving vehicles. The increase in the probability of traffic breakdown through automatic driving vehicles can be realized, even if any platoon of automatic driving vehicles satisfies condition for string stability.

  16. KJ150A型井下胶轮车监控系统在梅花井煤矿的应用%On the Application of KJ150A Underground Rubber-tried Vehicle Monitoring System in Meihuajing Coal Mine

    Institute of Scientific and Technical Information of China (English)

    马晓东

    2012-01-01

    随着神宁煤业集团梅花井煤矿建设的发展,胶轮车辅助运输的管理难度也越来越大,出现了巷道堵车严重、车辆超速严重、井上下调度困难等问题,运用KJl50A型井下胶轮车监控系统对井下无轨胶轮车实施监测和红绿灯控制,既提高了无轨胶轮车的运行效率,又确保了矿井胶轮车辅助运输的安全可靠。同时,将车辆调度和日常管理内容融入监控系统中,更好地发挥了信息化建设的平台作用,推动了梅花井煤矿胶轮车管理走向科学化和规范化。%With the development of construction of Meihuajing coal mine of Shenhua Ningxia Coal Industry Group, it is more and more difficult to management subsidiary transport of rubber-tried vehicle, and the problems like serious traffic jam in roadway, serious speeding of vehicles and difficult scheduling between surface and underground of coal mine has occurred. To implement monitor of underground trackless rubber-tried vehicle and control of traffic light by applying KJ150A underground rubber-tried vehicle monitoring system, can not only improve the operational efficiency of trackless rubber-tried vehicle, but also ensure the safety of subsidiary transport of rubber-tried vehicle. In the meanwhile, to integrate the vehicle scheduling and routine management into monitoring system can enable informationization construction play a role of platform better and promote scientific and standardized manazement of rubber-tried vehicle in Meihuaiinz coal mine.

  17. Design and Implementation of Wireless Vehicle Monitoring Terminal Based on the STM32%基于STM32的无线车载监控终端的设计与实现

    Institute of Scientific and Technical Information of China (English)

    方菁

    2012-01-01

      This paper designed a vehicle monitoring terminal based on STM32 and wireless communication.This monitoring system using GPRS as communication protocol between vehicle terminal and monitor center,using GPS for automobile current position real-time positioning,using the camera to take pictures of the designated area by timer mode or trigger mode based on G-sensor.Photographs sent to the monitor center by GPRS,at the same time saved to local memory as backup storage and USB acquisition.This monitoring system can be applied to taxi and other vehicle monitoring for supervision.%  本文设计了一种以STM32单片机为核心的无线车载监控终端,该监控系统采用GPRS无线通讯方式和监控中心通讯,使用GPS对汽车当前位置实时定位,使用摄像头以定时拍照和加速度传感器触发拍照的模式对指定区域拍照,拍摄的照片以无线方式发送到控制中心,同时支持本地存储器备份存储和USB采集。该监控系统可以应用于出租车等营运车辆的监控监管。

  18. Intelligent Vehicle Health Management

    Science.gov (United States)

    Paris, Deidre E.; Trevino, Luis; Watson, Michael D.

    2005-01-01

    As a part of the overall goal of developing Integrated Vehicle Health Management systems for aerospace vehicles, the NASA Faculty Fellowship Program (NFFP) at Marshall Space Flight Center has performed a pilot study on IVHM principals which integrates researched IVHM technologies in support of Integrated Intelligent Vehicle Management (IIVM). IVHM is the process of assessing, preserving, and restoring system functionality across flight and ground systems (NASA NGLT 2004). The framework presented in this paper integrates advanced computational techniques with sensor and communication technologies for spacecraft that can generate responses through detection, diagnosis, reasoning, and adapt to system faults in support of INM. These real-time responses allow the IIVM to modify the affected vehicle subsystem(s) prior to a catastrophic event. Furthermore, the objective of this pilot program is to develop and integrate technologies which can provide a continuous, intelligent, and adaptive health state of a vehicle and use this information to improve safety and reduce costs of operations. Recent investments in avionics, health management, and controls have been directed towards IIVM. As this concept has matured, it has become clear the INM requires the same sensors and processing capabilities as the real-time avionics functions to support diagnosis of subsystem problems. New sensors have been proposed, in addition, to augment the avionics sensors to support better system monitoring and diagnostics. As the designs have been considered, a synergy has been realized where the real-time avionics can utilize sensors proposed for diagnostics and prognostics to make better real-time decisions in response to detected failures. IIVM provides for a single system allowing modularity of functions and hardware across the vehicle. The framework that supports IIVM consists of 11 major on-board functions necessary to fully manage a space vehicle maintaining crew safety and mission

  19. Navigation System for Reusable Launch Vehicle

    OpenAIRE

    Schlotterer, Markus

    2008-01-01

    PHOENIX is a downscaled experimental vehicle to demonstrate automatic landing capabilities of future Reusable Launch Vehicles (RLVs). PHOENIX has flown in May 2004 at NEAT (North European Aerospace Test range) in Vidsel, Sweden. As the shape of the vehicle has been designed for re-entry, the dynamics are very high and almost unstable. This requires a fast and precise GNC system. This paper describes the navigation system and the navigation filter of PHOENIX. The system is introduced and the h...

  20. Feasible Path Planning for Autonomous Vehicles

    Directory of Open Access Journals (Sweden)

    Vu Trieu Minh

    2014-01-01

    Full Text Available The objective of this paper is to find feasible path planning algorithms for nonholonomic vehicles including flatness, polynomial, and symmetric polynomial trajectories subject to the real vehicle dynamical constraints. Performances of these path planning methods are simulated and compared to evaluate the more realistic and smoother generated trajectories. Results show that the symmetric polynomial algorithm provides the smoothest trajectory. Therefore, this algorithm is recommended for the development of an automatic control for autonomous vehicles.

  1. An Automatic Number Plate Recognition System under Image Processing

    OpenAIRE

    Sarbjit Kaur

    2016-01-01

    Automatic Number Plate Recognition system is an application of computer vision and image processing technology that takes photograph of vehicles as input image and by extracting their number plate from whole vehicle image , it display the number plate information into text. Mainly the ANPR system consists of 4 phases: - Acquisition of Vehicle Image and Pre-Processing, Extraction of Number Plate Area, Character Segmentation and Character Recognition. The overall accuracy and efficiency of whol...

  2. The Design and Realization of an Automatic Weibo Alarm Monitor System%一种可自动微博报警的监控系统的设计与实现

    Institute of Scientific and Technical Information of China (English)

    苏金池

    2014-01-01

    设计并实现了一种基于ARM嵌入式平台的可自动发送带GIF图片微博报警的智能视频监控系统。系统在原有的智能监控预警系统的基础上,利用PIL图像库及Python脚本,将每次异常事件后保存的多张JPG图片生成一张GIF动画,并利用新浪微博提供的Python SDK发送一条带GIF图片的微博,起到预警的作用。用户可通过多种微博客户端收到提醒信息。%In this paper, design and realize an intelligent monitor early warning system based on ARM embedded platform, which can send a GIF image to Sina weibo automatically. The system is based on the intelligent monitoring early warning system, using python Imaging Library and Python scripts, to detect the abnormal situation. Then, the system will use multiple JPG images to generate a GIF image, and use Python SDK to send a GIF image to Sina weibo,.This function have the effect of alarm. The us-er can receives the reminding information through a variety of Sina weibo client.

  3. Small Whiskbroom Imager for atmospheric compositioN monitorinG (SWING) from an Unmanned Aerial Vehicle (UAV): Results from the 2014 AROMAT campaign

    Science.gov (United States)

    Merlaud, Alexis; Tack, Frederik; Constantin, Daniel; Fayt, Caroline; Maes, Jeroen; Mingireanu, Florin; Mocanu, Ionut; Georgescu, Lucian; Van Roozendael, Michel

    2015-04-01

    The Small Whiskbroom Imager for atmospheric compositioN monitorinG (SWING) is an instrument dedicated to atmospheric trace gas retrieval from an Unmanned Aerial Vehicle (UAV). The payload is based on a compact visible spectrometer and a scanning mirror to collect scattered sunlight. Its weight, size, and power consumption are respectively 920 g, 27x12x12 cm3, and 6 W. The custom-built 2.5 m flying wing UAV is electrically powered, has a typical airspeed of 100 km/h, and can operate at a maximum altitude of 3 km. Both the payload and the UAV were developed in the framework of a collaboration between the Belgian Institute for Space Aeronomy (BIRA-IASB) and the Dunarea de Jos University of Galati, Romania. We present here SWING-UAV test flights dedicated to NO2 measurements and performed in Romania on 10 and 11 September 2014, during the Airborne ROmanian Measurements of Aerosols and Trace gases (AROMAT) campaign. The UAV performed 5 flights in the vicinity of the large thermal power station of Turceni (44.67° N, 23.4° E). The UAV was operated in visual range during the campaign, up to 900 m AGL , downwind of the plant and crossing its exhaust plume. The spectra recorded on flight are analyzed with the Differential Optical Absorption Spectroscopy (DOAS) method. The retrieved NO2 Differential Slant Column Densities (DSCDs) are up to 1.5e17 molec/cm2 and reveal the horizontal gradients around the plant. The DSCDs are converted to vertical columns and compared with coincident car-based DOAS measurements. We also present the near-future perspective of the SWING-UAV observation system, which includes flights in 2015 above the Black Sea to quantify ship emissions, the addition of SO2 as a target species, and autopilot flights at higher altitudes to cover a typical satellite pixel extent (10x10 km2).

  4. Automatic safety monitoring system and warning modes for artificial islands in coastal areas%滩海人工岛工程安全监测自动化系统与预警模式研究

    Institute of Scientific and Technical Information of China (English)

    焦志斌; 李运辉; 娄炎; 何宁

    2012-01-01

    系统分析了滩海人工岛工程运营期安全监测的特点,确定了安全监测内容,开发建立了国内首个滩海人工岛工程安全监测自动化系统,首次分析提出了滩海人工岛运行期监测的预警模式和预警指标。运行期滩海人工岛的安全预警包括两方面的内容:设计环境因素预警和岛体安全监测预警。岛体安全监测预警指标为围堤水平位移和围堤沉降;预警模式为根据监测数据变化,结合海域冲淤、断面浅剖,以及边坡安全稳定分析,分级提出预警,并给出了工程应对措施,为滩海人工岛工程运行期阶段的安全建设和管理提供了技术依据和保障。%The characteristics of safety monitoring for artificial islands in coastal areas during the operation stage are systematically analyzed. The relevant monitoring items are determined. The first automatic safety monitoring system for the artificial islands in coastal areas in China has been developed. The warning indices and modes for the safety monitoring of the artificial islands in coastal areas during the operation stage are put forward. The warning for the safety of the artificial islands in coastal areas during the operation stage includes the following two aspects: warning of design environment and waming of safety monitoring of islands. The warning indices include the horizontal displacement and settlement of embankments. The warning modes are hierarchical ones according to the variation of monitoring data, deposition and erosion in sea areas, shallow cutting of sections and stability analysis of slopes. The relevant countermeasures for the engineering safety are put forward so as to provide the technical basis and support for the safe construction and management of the artificial islands in coastal areas during the operation stage.

  5. Master-Slave Control Scheme in Electric Vehicle Smart Charging Infrastructure

    Directory of Open Access Journals (Sweden)

    Ching-Yen Chung

    2014-01-01

    Full Text Available WINSmartEV is a software based plug-in electric vehicle (PEV monitoring, control, and management system. It not only incorporates intelligence at every level so that charge scheduling can avoid grid bottlenecks, but it also multiplies the number of PEVs that can be plugged into a single circuit. This paper proposes, designs, and executes many upgrades to WINSmartEV. These upgrades include new hardware that makes the level 1 and level 2 chargers faster, more robust, and more scalable. It includes algorithms that provide a more optimal charge scheduling for the level 2 (EVSE and an enhanced vehicle monitoring/identification module (VMM system that can automatically identify PEVs and authorize charging.

  6. Master-slave control scheme in electric vehicle smart charging infrastructure.

    Science.gov (United States)

    Chung, Ching-Yen; Chynoweth, Joshua; Chu, Chi-Cheng; Gadh, Rajit

    2014-01-01

    WINSmartEV is a software based plug-in electric vehicle (PEV) monitoring, control, and management system. It not only incorporates intelligence at every level so that charge scheduling can avoid grid bottlenecks, but it also multiplies the number of PEVs that can be plugged into a single circuit. This paper proposes, designs, and executes many upgrades to WINSmartEV. These upgrades include new hardware that makes the level 1 and level 2 chargers faster, more robust, and more scalable. It includes algorithms that provide a more optimal charge scheduling for the level 2 (EVSE) and an enhanced vehicle monitoring/identification module (VMM) system that can automatically identify PEVs and authorize charging.

  7. Implementation of an Automatic System for the Monitoring of Start-up and Operating Regimes of the Cooling Water Installations of a Hydro Generator

    Directory of Open Access Journals (Sweden)

    Ioan Pădureanu

    2015-07-01

    Full Text Available The safe operation of a hydro generator depends on its thermal regime, the basic conditions being that the temperature in the stator winding fall within the limits of the insulation class. As the losses in copper depend on the square current in the stator winding, it is necessary that the cooling water debit should be adapted to the values of these losses, so that the winding temperature falls within the range of the values prescribed in the specifications. This paper presents an efficient solution of commanding and monitoring the water cooling installations of two high-power hydro generators.

  8. Remotely piloted LTA vehicle for surveillance

    Science.gov (United States)

    Seemann, G. R.; Harris, G. L.; Brown, G. J.

    1975-01-01

    Various aspects of a remotely piloted mini-LTA vehicle for surveillance, monitoring and measurement for civilian and military applications are considered. Applications, operations and economics are discussed.

  9. Intelligent Transport Systems 80211-based Roadside-to-Vehicle Communications

    CERN Document Server

    Hasan, Syed Faraz; Chakraborty, Shyam

    2013-01-01

    Focusing on the nuts and bolts of wireless network access for computers on-board vehicles, this volume shows how in-car computerization now does much more than merely act as a glorified map-reader. Wireless communication is transforming road travel in ways previously undreamt of, allowing vehicles to “talk” to a wider network and monitor road conditions, potential delays and traffic congestion, all automatically. Toll payments can be made without opening the driver’s window on a cold day, while vehicles might themselves take active steps to avoid collisions. It is the connection between on-board computers and wireless access points, ubiquitous in most cities now, that is a key area of research. Moving vehicles transfer their communications to new points as they progress, and this causes delays, known as “handover latency.” In this book, new stochastic models are developed to map the disruption when connecting to 802.11 WLAN points. It details the application of stochastic tools to analyzing communic...

  10. The research of an automatic monitoring system based on wireless sensor network and RFID in the reservoir%基于无线传感器网络与RFID技术的水库自动监测系统研究

    Institute of Scientific and Technical Information of China (English)

    张琳; 胡金杭

    2012-01-01

    The automatic monitoring system of reservoir based on wireless sensor network and RFID can keep inspection personnel of reservoir arrive in time, and monitor the change of various parameters in real time. It doesn't only provide full data base for reservoir regulation and management, but also improves the informatization construction of reservoir, meanwhile realizes the automatic monitoring scheduling.%该文研究的基于无线传感器网络与RFID技术的水库自动监测系统能有效保证水库巡检人员及时到岗,实时监控水库中各种参数变化.不仅为水库调度与管理提供了充分的数据基础,而且提高了水库信息化建设,实现了监控调度自动化.

  11. Research and Development in the Vehicle Fuel Consumption Information Extraction and Remote Monitoring System%车辆油耗信息提取与远程监控系统研发

    Institute of Scientific and Technical Information of China (English)

    孙国凯; 褚林涛; 刘应吉

    2012-01-01

    In order to improve the level of the vehicle's energy consumption statistics,a vehicle fuel on a local extraction and remote monitoring system has been designed.This system is based on vehicles which use the CAN-bus,and Integrates GPS,GPRS and SD card module.This system can collect and store the vehicle fuel consumption information through the CAN-bus,and feedback this information to the business' monitoring center by GPRS.The system allows managers to remotely understand the vehicle's fuel consumption information and to make appropriate management measures.Hence,the vehicle's fuel economical efficiency could be improved by this system.%为提高车辆的能源消耗统计水平,提出并设计了车辆油耗本地提取与远程监控系统。该系统以带CAN总线的车辆为基础,整合GPS、GPRS以及SD卡模块,可通过CAN总线采集并存储车辆的油耗信息,并通过GPRS无线传输网络传至监控中心。该系统可使管理人员远程了解车辆的油耗信息,并做出相应的经营管理对策,提高车辆的燃油经济性。

  12. Indoor Surveillance Security Robot with a Self-Propelled Patrolling Vehicle

    Directory of Open Access Journals (Sweden)

    Hou-Tsan Lee

    2011-01-01

    Full Text Available Self-propelled patrolling vehicles can patrol periodically in the designed area to ensure the safety like men do. The proposed vehicle cannot only save manpower, but also ensure the performance without mistakes caused by man. It is different from the traditional patrolling system which is limited by the manpower and the fixed camera positions. To improve such situation, this paper proposes a self-propelled patrolling vehicle which can move automatically to a wider range and record the monitored image by IPCAM within a predefined patrolling route. Besides, the user can use the mobile device or website to connect to the vehicle at anytime and anywhere and control it to move to the position to get the indoor image user wants. The position of self-propelled vehicles can be detected by the RFID reader as a feedback and be shown on the PC screen and smart phone. The recorded images can be also transmitted back to the server via WiFi system for face tracking and discriminating analysis. On the other hand, the self-propelled vehicle patrolling routes can be modified by the Android smart-phone remote-control module. When some defined events occur, the build-in MSN module will notice users by sending messages to PC and smart phone. Experimental results are given in the paper to validate its performance.

  13. 能源技术大型电网能耗自动监测模块的设计与实现%Design and implementation of energy consumption automatic monitoring module for large-scale power grid

    Institute of Scientific and Technical Information of China (English)

    张建伟; 韩路; 杨昊; 赵永辉

    2016-01-01

    The energy consumption monitoring of power grid has great significance for energy conservation and emission re⁃duction,but the current power grid lacks of the corresponding modules to deal with it. A design method of the large⁃scale power grid energy consumption automatic monitoring module based on hybrid modulation of narrow⁃band matching voltage transforma⁃tion and power amplification is proposed. The energy consumption monitoring and data acquisition system for the large⁃scale pow⁃er grid was designed,which is responsible for the acquisition and processing of the energy consumption information signal of large⁃scale power grid,and for communication and data transmission with upper computer system. The narrow⁃band matching voltage transformer and power amplifier were designed. The hybrid modulation of narrow⁃band matching voltage transformation and power amplification is used to realize data filtering and signal detection of the power grid consumption. The integration com⁃piling,interface connection,debugging and simulation for the energy consumption monitoring platform of the large⁃scale power grid are conducted with DSP chip in CCS 2.20 development platform. The experimental results show that the system can effective⁃ly realize the active monitoring and parameter estimation of the energy consumption for large⁃scale power grid,and execute the digital control on the microcontroller unit. The comparison of the corresponding amplitude⁃frequency values in the energy con⁃sumption monitoring graph shows this method has good step response performance of the energy consumption monitoring,less fre⁃quency spectrum distortion,and excellent convergence and stability of energy consumption monitoring.%电网能耗监控对节能减排意义重大,当前的电网缺少相应的模块。提出一种基于窄带匹配变压和功率放大混合调制的大型电网能耗自动监测模块设计方法。设计大型电网能耗监测数据采集

  14. Study on Automatic Logistics Vehicle Positioning System Based on Web-GIS Technology%基于Web-GIS技术的物流自动车辆定位系研究

    Institute of Scientific and Technical Information of China (English)

    贺媛媛; 赵秦; 马伯元; 聂海荣; 栗惠英

    2013-01-01

    利用地理信息系统的分析功能来完善并提高物流系统的分析功能,研究在物流业车辆定位中引入Web-GIS技术,利用GIS的空间地理信息对车辆进行定位,并利用道路信息,以及路况情况来辅助决策配送车辆的调配和路线规划,给出了基于Web-GIS技术的物流自动车辆定位系统的框架,分析了其可行性.%In this paper,using the analytic function of GIS to boost the performance of the logistics systems,we introduced the Web-GIS technology into logistics vehicle positioning,using the spatial geographical information to position the vehicles and using the road status information to assist dispatching and routing of the distribution vehicles.At the end,we presented the framework of the system and analyzed its feasibility.

  15. 基于几何矩预分类的无人机遥感图像自动配准方法%Automatic Unmanned Aerial Vehicle(UAV) Image Registration Based on Geometric Moment For Pre-classifying

    Institute of Scientific and Technical Information of China (English)

    鲁云飞; 赵红颖; 刘大平; 晏磊

    2011-01-01

    Recently, image registration technology is one of the rapid development field in image processing area. In remote sensing field, it is a significant step for image fusion, moving detection, image correction, image mosaic and so on. Although there are many methods for image registration in the world, different methods apply to different kinds of images, most time the methods are selected by human intervening but not automatically. It becomes a key issue that how to combine the advantages of different methods to achieve automatic image registration, especially for UAV images. In this paper, a pre-classifying method based on geometric moment is proposed after the comparison of image registration methods based on SIFT and SURF feature extraction, in order to decide which image registration method is the best one, thereby, achieve the whole automatic process. The experiments show that this automatic image registration method makes sure a good matching effect and at the same time it broaden the types of applicative images.%图像配准技术是近些年来图像处理领域发展迅速的研究方向之一.在遥感领域内,图像配准更是实现图像融合、运动检测、图像校正、图像拼接等应用的一个关键步骤.尽管国内外目前在图像配准方面提出了很多方法,但不同方法适用的图像范围不同,很多时候需要人工干预进行方法的选择.尤其对于无人机这种快速、实时获取图像的新型遥感平台,如何集合不同方法的优点以实现图像自动配准成为了关键性问题.本文在比较分析了基于SIFT和SURF特征提取图像配准方法的各自优势后,提出基于几何矩的方法对图像进行预先分类,从而决定将其分配给何种方法进行配准,实现全程自动化.实验证明,这种图像自动配准方法在拓宽了图像应用范围的同时保证了良好的配准效果.

  16. 海水入侵-地下水位变化-土壤盐渍化自动监测实验研究%Automatic Monitoring for Seawater Intrusion-Groundwater Level Changes-Soil Salinization

    Institute of Scientific and Technical Information of China (English)

    潘玉英; 付腾飞; 赵战坤; 张颖; 贾永刚

    2012-01-01

    In order to verify the availability of the monitoring system in monitoring the environmental processes such as seawater intrusion,groundwater level change and soil salinization,the dynamic monitoring simulation experiments had been carried on seawater intrusion,groundwater level rising and falling,and soil salinization respectively using self-made automatic monitoring system supported by National 863 Topics with resistivity.The results showed that the saltwater-freshwater interface and the dispersion zone by seawater intrusion,the position above or below the groundwater level and the unsaturated zone,and soils with different salt contents had significant resistivity differences in test results.It could provide data and technique support for environmental processes such as seawater intrusion,groundwater level changes,soil salinization and underground contamination.%利用国家863课题支持研制的电阻率探杆自动监测系统,分别进行了海水入侵、地下水位升降、土壤盐渍化过程的动态监测室内模拟实验,旨在探讨该系统用于海水入侵、地下水位变化、土壤盐渍化等环境过程自动监测的可行性。结果表明,海水入侵形成的咸-淡水界面及海水弥散带,地下水位位置上下及包气带,及不同含盐量的土体,均具有显著的电阻率探杆测试结果特征差异。该系统可为海水入侵,地下水位变化,土壤盐渍化,土壤地下污染等环境过程的原位连续实时自动监测提供数据资料及技术支持。

  17. 基于加权信息熵的航天器姿态稳定自动监测%Automatic Monitoring of Spacecraft Attitude Stability Based on Weighted Information Entropy

    Institute of Scientific and Technical Information of China (English)

    张宽; 韩威华

    2016-01-01

    To monitor the attitude stability of the spacecraft and provide useful evidence for the flight control decision⁃making, a weighted entropy based approach for monitoring the spacecraft attitude stability was proposed. The entropy was used as the measure of the local time-domain complexity in the approach. The data of 17 attitude controls from the reentry flight mission for the 3rd phase of Chinese lunar exploration program were employed to test our approach. The experiment results proved the validity of the approach, the phenomenon that the pitch and yaw did not converge and still changed after the attitude adjustments was found, which was not monitored during the mission and further proved the importance and urgency of automatic monitoring and judgement for the space⁃craft attitude stability.%为监视航天器的姿态控制稳定度以为后续飞行控制决策提供依据,提出了一种基于加权信息熵的航天器姿态稳定监测方法,该方法使用加权信息熵计算航天器姿态局部时域内的非线性变化复杂度,进而量化评估航天器的姿态稳定性,可对航天器的姿态稳定进行自动辅助监视和判断。探月三期再入返回飞行试验任务期间的17次调姿数据验证了方法的有效性,并且发现了某次调姿后俯仰角和偏航角均未收敛和稳定,此现象在任务期间并未被测控人员监视发现,进一步证明亟需开展航天器姿态稳定自动辅助监视和判断的必要性。

  18. Design of STM32-based automatic monitor for dust on air conditioning heat sink%基于STM32的空调散热片粉尘自动监测仪的设计

    Institute of Scientific and Technical Information of China (English)

    顾芳; 付洋; 张仙玲; 曹骏; 杨娟; 陈子煊; 管靓; 张加宏

    2014-01-01

    An ultra-low-power high-precision automatic dust monitor was designed and implemented to accurately detect dust on the air conditioning heat sink. The system is composed of ARM processor,photoelectric sensor array module,weak sig-nal processing circuit,analog-digital conversion circuits,LCD touch screen display and input module,sound and light alarm system,relay switch control circuit,clock module and serial communication module. Taking STM32 microprocessor as a master controller,the differential detection for dust on the air conditioning heat sink is executed by the pulse-driving photoelectric sen-sor array. The low-noise AD7195 ADC excited by AD is used to convert the amplified and filtered voltage signals into digital sig-nals. The microprocessor is employed to analyze and process the received digital signals,which can generate the monitoring re-sults displayed by LCD and the sound-light alarm,forcibly close air conditioning,and remind the user promptly that they have to clean the air conditioning heat sink. The practical application shows that the intelligent automatic dust monitor for air condi-tioning heat sink can effectively and precisely achieve real-time display,optoelectronic alarm,PC communications and other functions. It can be used to monitor various types of air conditioning heat sink,and has a strong practical value.%为了对空调散热片上的粉尘进行准确检测,设计并实现了一种超低功耗高精度粉尘自动监测仪。该系统由ARM处理器、阵列式光电传感器模块、微弱信号调理电路、模/数转换电路、触摸屏液晶显示及输入模块、声光报警系统、继电器开关控制电路、时钟模块以及串口通信模块构成。以STM32微处理器为主控,通过脉冲驱动阵列式光电传感器对空调散热片粉尘进行差分检测,并利用交流激励低噪声AD7195模数转换器将经过放大滤波处理后的电压信号转换成数字量。微处理器接受数字量后进行

  19. 75 FR 15621 - Federal Motor Vehicle Safety Standards; Theft Protection and Rollaway Prevention

    Science.gov (United States)

    2010-03-30

    ... National Highway Traffic Safety Administration 49 CFR Part 571 RIN 2127-AK38 Federal Motor Vehicle Safety... Federal Motor Vehicle Safety Standard No. 114 that certain motor vehicles with an automatic transmission..., or ``Act'') was signed into law.\\1\\ This Act relates to several aspects of motor vehicle...

  20. AUTOMATICALLY OPERATING RADARS FOR MONITORING INSECT PEST MIGRATIONS%监测害虫迁飞的全自动雷达

    Institute of Scientific and Technical Information of China (English)

    V.A.Drake

    2002-01-01

    在过去30年里,专用昆虫雷达大大深化了我们对昆虫迁飞、尤其是在高达1km高度夜间迁飞的认识.早期的昆虫雷达无法开展长期监测,这种缺陷现已被一种新型的全自动雷达所克服.这种"昆虫监测雷达"(IMR)造价低廉,可自动采集并通过电话网远程传输观测数据,其ZLC制式使其能够获得高质量的迁飞个体的飞行参数从而提高目标鉴别能力.目前,在澳大利亚东部的半干旱内陆地区,即迁飞性鳞翅目害虫和澳大利亚疫蝗(Chortoicetes terminifera)的虫源区,装置了两部IMR并连续监测其迁飞活动,本文报告了这两部雷达的部分监测结果.IMR能提供构成昆虫迁飞系统所需的若干参数,即估测迁飞事件在特定季节、特定方向响应于特定环境条件和信号而发生的概率,为害虫治理机构和测报人员提供对主要迁入事件及其目标害虫可能的迁入区的预警.而且,IMR还可用于更为广泛的生态监测,特别是空中生物流量年际变化的定量监测.%Over the last three decades, special-purpose "entomological" radars have contributed much to the development of our understanding of insect migration, especially of the nocturnal migrations at altitudes of up to~1 km that are regularly undertaken by many important pest species. One of the limitations of early radar studies, the difficulty of maintaining observations over long periods, has recently been overcome by the development of automated units that operate autonomously and transmit summaries of their observations to a base laboratory over the public telephone network. These relatively low-cost Insect Monitoring Radars (IMRs) employ a novel "ZLC" configuration that allows high quality data on the migrants' flight parameters and identity to be acquired. Two IMRs are currently operating in the semi-arid inland of eastern Australia, in a region where populations of migrant moths (Lepidoptera) and Australian plague locusts

  1. 航油罐底部自动监测及取样机器人系统研究%Research of Robot System for Automatic Monitoring and Sampling in Bottom of Jet Fuel Tank

    Institute of Scientific and Technical Information of China (English)

    王朝晖; 赵鹏程; 郭常颖; 贾丽

    2015-01-01

    基层部队在清洗航油罐时,时常会出现下列状况,有时罐底很干净,并不需要进行清洗,造成人力物力的浪费;有时罐底很脏,已对贮存油料质量造成较大影响。此外,罐底通常是油罐腐蚀最严重的部位,由于缺乏实时监测手段,出现过罐底腐蚀穿孔,造成油料泄漏的严重事故。本文介绍了研制航油罐底部自动监测及取样机器人系统的意义及国内外研究现状;阐述了研究内容及难点;分析了军事及经济效益。%Cleaning jet fuel tank in army, the bottom of tank was cleaning, it’s undesired to clean, sometimes, the bottom of tank was very dirty, it influenced quality of jet fuel. Besides, bottom of tank was place of corroded best, absence of monitoring, hole was appeared by corrosion in bottom of tank, it made jet fuel leak. The meaning of research of robot system for automatic monitoring and sampling in bottom of jet fuel tank was introduced, the recent advance in study in domestic and abroad was reviewed, contents and difficult points of research were described, martial and economic benefits were analyzed.

  2. Design and implementation of automatic monitoring system for tailings safety%尾矿库安全自动化监测系统的设计与实现

    Institute of Scientific and Technical Information of China (English)

    代洪涛; 李如仁

    2012-01-01

    In order to realize the automation of the tailings management, reduce tailings accident frequency and improve tailings production efficiency. This paper analyzed the present situation of the development of the tailings in our country, and introduced the basic theory of the tailings system, moreover, it designed and realized the automatic monitoring system for tailings safety by Visual Studio 2010 and C# language. This system fulfills the management of resources in tailings, besides, it can also realize the functions such as: monitor data, output the graphs, output the statements and make the grading alarm if necessary. In addition, this system also provides the GPS control points early warning function in the X, Y, Z three directions, and intuitively reflects the real-time space status in every direction of the control points.%为了实现尾矿库的自动化管理,降低尾矿事故发生频率,提高尾矿生产效率,分析了我国尾矿库开发的现状,介绍了尾矿库系统的基本理论,并设计实现了在Visual Studio 2010下用C#语言的尾矿库安全自动化监测系统.该系统可对尾矿库相关数据进行实时监测,同时利用获取的各种数据完成图形输出、报表输出和分级报警功能,此外,系统还提供了GPS控制点在X、Y、Z三个方向上是否超限的预警功能,直观地反映出控制点在空间方向的实时状态.

  3. Analysis on the Scheme of Automatic Monitoring Middle and Small Rivers Flow in Jiangsu Province%江苏省中小河流流量自动监测方案分析

    Institute of Scientific and Technical Information of China (English)

    苏海松; 梁军; 崔军; 周许

    2015-01-01

    Considering the characteristic of the large number of middle and small rivers in Jiangsu Province ,the hydrological telemetry communication system covering middle and small rivers is to be built to realize the reliable and accurate collection and timely transmission of rivers flow ,water and rainfall information. The paper analyzes the scheme of automatic monitoring middle and small rivers flow in Jiangsu province according to the characters of testing the river section, the water level in the river and its amplitude,the traffic conditions,combined with the flow meter’s principle,characteristics,operating conditions and calibration method,etc.%针对江苏省中小河流众多的特点,建成覆盖中小河流的水文报汛通信系统,实现流量、水雨情信息及时、准确、可靠的采集和传输。文章根据测验断面的河道性状、水位及其变幅、交通条件等情况,结合流量计的原理、特点、使用条件、校准方法等,对江苏省中小河流流量自动监测方案进行分析。

  4. Electric vehicles

    Science.gov (United States)

    1990-03-01

    Quiet, clean, and efficient, electric vehicles (EVs) may someday become a practical mode of transportation for the general public. Electric vehicles can provide many advantages for the nation's environment and energy supply because they run on electricity, which can be produced from many sources of energy such as coal, natural gas, uranium, and hydropower. These vehicles offer fuel versatility to the transportation sector, which depends almost solely on oil for its energy needs. Electric vehicles are any mode of transportation operated by a motor that receives electricity from a battery or fuel cell. EVs come in all shapes and sizes and may be used for different tasks. Some EVs are small and simple, such as golf carts and electric wheel chairs. Others are larger and more complex, such as automobile and vans. Some EVs, such as fork lifts, are used in industries. In this fact sheet, we will discuss mostly automobiles and vans. There are also variations on electric vehicles, such as hybrid vehicles and solar-powered vehicles. Hybrid vehicles use electricity as their primary source of energy, however, they also use a backup source of energy, such as gasoline, methanol or ethanol. Solar-powered vehicles are electric vehicles that use photovoltaic cells (cells that convert solar energy to electricity) rather than utility-supplied electricity to recharge the batteries. These concepts are discussed.

  5. Applications of unmanned aerial vehicle images on agricultural remote sensing monitoring%基于无人机影像的农情遥感监测应用

    Institute of Scientific and Technical Information of China (English)

    王利民; 刘佳; 杨玲波; 陈仲新; 王小龙; 欧阳斌

    2013-01-01

    By taking Agricultural High-tech Industrial Park of Chinese Academy of Agricultural Sciences (Wan Zhuang) and its peripheral regions with a total area of 4.2 × 3.1 km as the study area, this paper carried out an aerial photogrammetry experiment by using the RICOH GXR A12 camera carried on an unmanned aerial vehicle (UAV), and the experiment mainly tested the precisions of planar positioning under a POS (positioning and orientation system) supported bundle block adjustment method and of area measurement, as well as the precision of the crop area identification of an UAV orthophoto map obtained from an aerial triangulation correction. We use an unmanned aerial vehicle (UAV) to obtain 690 images which covered the whole study area. After a series of processes such as image screen, POS-supported aerial triangulation correction, digital elevation model making, image fusion, and digital differential rectification, we have obtained the ortho-photo map of the whole study area. Since the deployment of high precision ground control point wastes time and energy, POS-supported aerial triangulation employs a non-control point model. Therefore, its absolute positioning precision may be affected by the error of the GPS carried on an UAV. In order to eliminate this error, the project team used a high precision wordview image to rectify the ortho-photo map. In this way, we could improve the image positioning precision, and meanwhile unify the study sample areas with the overall larger scope image coordinate system, so as to provide high precision samples for large-scale agriculture remote sensing statistics and monitoring. The result shows that, under the condition of no control point and after direct POS data bundle block adjustment, the mean square error of plane positioning precision of the X axis direction is 2.29 m, Y direction is 2.78 m, and overall plane error is 3.61 m. If a three order general polynomial model is adopted to conduct a geometric precision correction, then

  6. 4G网络在无人驾驶智能车远程监控系统上的应用%4G network in unmanned intelligent vehicle the application of remote monitoring system

    Institute of Scientific and Technical Information of China (English)

    谭宝成; 曹国浩

    2015-01-01

    近年来,随着电子技术和通信技术的快速发展,制造无人驾驶智能车已成为一大热潮。3G网络的普及以及人们对网络的要求越来越高,4G就是在这种背景下应运而生的。本文运用4G网络在无人驾驶智能车远程监控系统上,通过4G网络把无人驾驶智能车的信息以数字和图像形式传送到远程监控端,远程监控端的操作人员便可以看到无人驾驶智能车的信息并进行控制。%In recent years, with the rapid development of electronic technology and communication technology, manufacturing unmanned intelligent car has a big boom. The popularity of 3G network and the demand is higher and higher. 4G is came into being in this context, this paper on the unmanned remote monitoring system of intelligent vehicles, unmanned intelligent cars through the 4G network information in the form of numbers and pictures sent to the remote monitoring, remote monitor and control the operating personnel, can see unmanned intelligent vehicle information and control.

  7. PLC Based Automatic Multistoried Car Parking System

    OpenAIRE

    2014-01-01

    This project work presents the study and design of PLC based Automatic Multistoried Car Parking System. Multistoried car parking is an arrangement which is used to park a large number of vehicles in least possible place. For making this arrangement in a real plan very high technological instruments are required. In this project a prototype of such a model is made. This prototype model is made for accommodating twelve cars at a time. Availability of the space for parking is detecte...

  8. DESIGNING WSN-BASED INTELLIGENT LOGISTICS VEHICLE MONITORING SYSTEM%基于无线传感器网络的智能物流车辆监控系统的设计

    Institute of Scientific and Technical Information of China (English)

    王晓华; 李萍

    2014-01-01

    为了解决物流运输途中物资安全监控难、受限人为因素等诸多安全隐患问题,并能实现对物流车辆定位、实时监测和跟踪功能,介绍一种基于无线传感器网络的智能监控系统在物流车辆调度监管中的应用。设计以S3C6410微处理器和WiFi模块及GPRS等构建的无线传感器网络节点,实现对物流车厢内物资信息的采集、处理和显示,异常时启动摄像头进行实时监控,并可将车辆的工作状态与位置等信息传输至监控中心。在VMware和Ubuntu11.10开发环境下编写和编译传感器节点程序,实现无线传感器网络节点之间的数据传输功能。结果表明:系统工作稳定可靠,结构简单,功能易扩展,具有推广和应用价值。%In order to solve many safety risks of in-transit logistics transportation such as goods safety monitoring difficulty and constrained human factors, as well as to realise the functions of positioning, timely detecting and tracking the logistics vehicles, we introduce the application of a WSN-based intelligent monitoring system in logistics vehicle scheduling and regulatory services.We design the wireless sensor networks nodes constructed with S3C6410 microprocessor, WiFi module and GPRS, etc., and implement the collection, processing and display of goods information in transit.Once the abnormal situation occurs, the cameras installed in vehicles will work to carry out real-time monitoring and send back the information of the vehicles working condition and position to monitoring centre.In VMware and Ubuntu11.10 development environment, the sensor-nodes programs have been programmed and compiled, which realise the data transmission function between WSN nodes.Test results show that the system works stable and reliable, its structure is simple, and its function is easy to be expanded, thus has the popularised and applied value.

  9. 电动汽车充电设施监控系统实例研究%Case Study of Electric Vehicle Charging Facilities Monitoring System

    Institute of Scientific and Technical Information of China (English)

    彭龙锋

    2015-01-01

    电动汽车产业要想实现市场化,电动汽车充电站是最重要的配套设施,它能够为电动汽车提供所需的能源。因此,为了推动电动汽车产业不断向好发展,必须不断完善电动汽车的充电设施,加大充电站的建设力度。%The electric car industry in order to achieve market-oriented, electric vehicle charging station is the most important facilities, it can provide the energy needed for electric vehicles. Therefore, in order to promote the electric car industry continued to improve development, we must continue to improve electric vehicle charging facilities, increase efforts in building charging stations.

  10. Automatic Fiscal Stabilizers

    Directory of Open Access Journals (Sweden)

    Narcis Eduard Mitu

    2013-11-01

    Full Text Available Policies or institutions (built into an economic system that automatically tend to dampen economic cycle fluctuations in income, employment, etc., without direct government intervention. For example, in boom times, progressive income tax automatically reduces money supply as incomes and spendings rise. Similarly, in recessionary times, payment of unemployment benefits injects more money in the system and stimulates demand. Also called automatic stabilizers or built-in stabilizers.

  11. 区域自动气象站蓄电池在线监测系统的研究%Research on the online monitoring system of battery in regional automatic meteorology station

    Institute of Scientific and Technical Information of China (English)

    蒋涛; 于平; 刘宇; 张佳佳

    2016-01-01

    Regional automatic meteorology station plays an active role in the meteorological service of flood season ,but as a result of the continuous operation of regional station and the aging of solar panel and battery ,which lead to the frequent missing of data . Based on the above reasons ,it is necessary to design the online monitoring system of battery in the regional automatic meteorology station .The hardware of the system is made up of PIC 16F microcontroller which carries out the acquisition of voltage and sending of the packaged raw data .The software of the system is developed by Delphi .Multiple independent reception service programs which can ensure the receiving and processing of mass data at the same time are generated by the dynamically generated server technology when receiving data .Multi‐threading and database connection pool technology which can ensure the integrity of data are toke when extracting and processing data .The voltage state of solar panels ,battery and load is monitored by the system all the time .The re‐mote transmission of data can be realized by the use of GPRS .In addition ,real‐time alerts can be sent out when the voltage of output load is too low .%基于区域自动气象站在汛期气象服务中发挥着积极作用,但经过多年的连续运行,太阳能电池板及蓄电池使用老化,加之近年来雾霾严重,太阳能时有时无,导致由太阳能电池板与蓄电池供电的区域自动气象站数据缺测时有发生,所以本文设计了区域自动气象站蓄电池在线监测系统。该系统硬件部分采用 PIC 16F系列单片机实现电压采集和对原数据打包发送;软件部分采用Delphi语言开发,数据接收时采用动态生成服务端技术,可生成多个独立接收服务程序,保障大批量数据的同时接收和处理,数据提取和处理端采用多线程和数据库连接池技术,保证数据的完整性。通过该系统实现了针对区域站的太

  12. Automatic differentiation bibliography

    Energy Technology Data Exchange (ETDEWEB)

    Corliss, G.F. (comp.)

    1992-07-01

    This is a bibliography of work related to automatic differentiation. Automatic differentiation is a technique for the fast, accurate propagation of derivative values using the chain rule. It is neither symbolic nor numeric. Automatic differentiation is a fundamental tool for scientific computation, with applications in optimization, nonlinear equations, nonlinear least squares approximation, stiff ordinary differential equation, partial differential equations, continuation methods, and sensitivity analysis. This report is an updated version of the bibliography which originally appeared in Automatic Differentiation of Algorithms: Theory, Implementation, and Application.

  13. Automatic Extraction of Metadata from Scientific Publications for CRIS Systems

    Science.gov (United States)

    Kovacevic, Aleksandar; Ivanovic, Dragan; Milosavljevic, Branko; Konjovic, Zora; Surla, Dusan

    2011-01-01

    Purpose: The aim of this paper is to develop a system for automatic extraction of metadata from scientific papers in PDF format for the information system for monitoring the scientific research activity of the University of Novi Sad (CRIS UNS). Design/methodology/approach: The system is based on machine learning and performs automatic extraction…

  14. Image-Based Vehicle Identification Technology for Homeland Security Applications

    Energy Technology Data Exchange (ETDEWEB)

    Clark, G A

    2002-10-08

    The threat of terrorist attacks against US civilian populations is a very real, near-term problem that must be addressed, especially in response to possible use of Weapons of Mass Destruction. Several programs are now being funded by the US Government to put into place means by which the effects of a terrorist attack could be averted or limited through the use of sensors and monitoring technology. Specialized systems that detect certain threat materials, while effective within certain performance limits, cannot generally be used efficiently to track a mobile threat such as a vehicle over a large urban area. The key elements of an effective system are an image feature-based vehicle identification technique and a networked sensor system. We have briefly examined current uses of image and feature recognition techniques to the urban tracking problem and set forth the outlines of a proposal for application of LLNL technologies to this critical problem. The primary contributions of the proposed work lie in filling important needs not addressed by the current program: (1) The ability to create vehicle ''fingerprints,'' or feature information from images to allow automatic identification of vehicles. Currently, the analysis task is done entirely by humans. The goal is to aid the analyst by reducing the amount of data he/she must analyze and reduce errors caused by inattention or lack of training. This capability has broad application to problems associated with extraction of useful features from large data sets. (2) Improvements in the effectiveness of LLNL's WATS (Wide Area Tracking System) by providing it accurate threat vehicle location and velocity. Model predictability is likely to be enhanced by use of more information related to different data sets. We believe that the LLNL can accomplish the proposed tasks and enhance the effectiveness of the system now under development.

  15. Vehicle management system-system analysis and design

    Institute of Scientific and Technical Information of China (English)

    CHENG Ke-fei; LONG Hua; ZHANG Cong

    2004-01-01

    This paper presents one of GPS Vehicle Monitor System on base of Web-GIS technology, which is very important in vehicle tracking, scheduling and management. In the paper, a real GPS vehicle monitor system which using Internet technology is introduced. This system have been putted into practice successfully.

  16. Development of Automatic Monitoring Alarm of Autologous Blood Recoverer Roller Pump Microgap%自体血液回收机滚压泵微量泵距自动监控报警仪的研制

    Institute of Scientific and Technical Information of China (English)

    田勇; 丁巾

    2012-01-01

    Autologous blood recoverer is widely used in surgical operation in recent years. Roller pump is a crucial component of the equipment, and the slot width between rolling axle and pump trough is an important parameter relative to receiving blood quality. In this paper, the automatic monitoring device of rolling and microgap whose processing core was STC12C5A60S2 chip microcomputer was designed by using Flexiforce thin film force transducer as sensing element. In addition, LCD display and alarming functions were provided. With the advantages of small, portable, convenient usage and so on, the instrument is completely suitable for autologous blood recoverer in clinical application process.%自体血液回收机是近年来广泛应用于外科手术的先进仪器.液体滚压泵是自体血液回收机中的关键部件,而其中的滚压轴与泵槽间隙则是关系到血液回收质量等级的重要参数.本文以Flexiforce薄膜压力传感器为感测元件,设计了以STC 12C5A60S2单片机为处理核心的滚压泵微量泵距参数自动监测仪器,并具有液晶显示、超限报警等功能.该仪器体积小、易携带、使用方便,完全适用于自体血液回收机的临床应用.

  17. Design of Vehicle Intelligent Remote Anti-theft and Monitoring System Based on Mobile Communication%基于移动通信的车辆智能远程防盗监控系统的研制

    Institute of Scientific and Technical Information of China (English)

    张泽秾; 李成; 杨浩

    2013-01-01

    A vehicle intelligent remote anti-theft and monitoring system based on mobile communi-cation is designed in this paper.Microcontroller is the core of the system.The system can send a-larm messages to the car owner if the car is in an abnormal condition,and then the car owner can control the subsystem of door lock and ignition remotely.It can also extract the information of latitude and longitude.Its software and hardware are debugged successfully.It could provide va-rious functions,including vehicle location,tracking,monitoring,and anti-theft alarm.%以单片机为核心设计了一款基于移动网络的车辆智能远程防盗监控系统。该系统实现了当车辆出现异常情况时向车主远程报警、车主可远程控制车辆的点火系统和门锁系统、提取车辆实时经纬度。该系统已成功通过了软硬联调测试,能提供车辆的定位、跟踪、监控、防盗报警等功能。

  18. Real-time vehicle emissions monitoring using a compact LiDAR system and conventional instruments: first results of an experimental campaign in a suburban area in southern Italy

    Science.gov (United States)

    Parracino, Stefano; Richetta, Maria; Gelfusa, Michela; Malizia, Andrea; Bellecci, Carlo; De Leo, Leonardo; Perrimezzi, Carlo; Fin, Alessandro; Forin, Marco; Giappicucci, Francesca; Grion, Massimo; Marchese, Giuseppe; Gaudio, Pasquale

    2016-10-01

    Urban air pollution causes deleterious effects on human health and the environment. To meet stringent standards imposed by the European Commission, advanced measurement methods are required. Remote sensing techniques, such as light detection and ranging (LiDAR), can be a valuable option for evaluating particulate matter (PM), emitted by vehicles in urban traffic, with high sensitivity and in shorter time intervals. Since air quality problems persist not only in large urban areas, a measuring campaign was specifically performed in a suburban area of Crotone, Italy, using both a compact LiDAR system and conventional instruments for real-time vehicle emissions monitoring along a congested road. First results reported in this paper show a strong dependence between variations of LiDAR backscattering signals and traffic-related air pollution levels. Moreover, time-resolved LiDAR data averaged in limited regions, directly above conventional monitoring stations at the border of an intersection, were found to be linearly correlated to the PM concentration levels with a correlation coefficient between 0.75 and 0.84.

  19. Development of the Vehicle Real-Time Running Status Monitoring and On-Board Diagnostic System%汽车实时运行状态监控及在线故障诊断系统的研制

    Institute of Scientific and Technical Information of China (English)

    潘可贤; 陈晓冰

    2009-01-01

    The vehicle real-time running status monitoring and on-board diagnostic system is designed to meet the need of diagnosing vehicle for private cars owners. The functions, such as the real-time data flow reading and recording, on-board diagnostic, voice reminding, displaying error code and corresponding content with liq-uid crystal displayer, data transferring via universal serial bus, are provided by this system. Furthermore, owner-drivers are able to know the running status of the vehicles, monitor whether their cars are in good condition, and then to locate malfunctioning parts via KWP1281/ISO9141/ISO14230(KWP20OO)/SAE J1850 VPW/SAE J1850 PWM/ISO15765 protocols to ensure safe driving and reduce the cost of maintenance.%针对当前私家车车主对汽车故障诊断的实际需求,提出汽车实时运行状态监控及在线故障诊断系统.该系统集成了汽车实时数据流读取和记录、故障诊断、语音提醒、故障码和故障内容LCD显示、USB数据传输等功能,完成了KWP1281/ISO9141/ISO14230(KWP2000)/SAE J1850 VPW/SAE J1850PWM/ISO15765协议的通信,使车主能够及时了解车辆的行驶状态,及时完成车辆运行监控、故障定位,以保证行车安全,并降低维修保养费用.

  20. Research and Development on Universal Monitor & Calibration System for Electric Vehicles%电动汽车通用型监控及标定系统的研发

    Institute of Scientific and Technical Information of China (English)

    周能辉; 杜森; 李磊; 赵春明

    2013-01-01

    This article develops a universal monitor & calibration system for electrical vehicles based on the CCP protocol and ASAP2 data Specification of the ASAM-MCD standard. The overall architecture of the system and design of corresponding modules are presented in this article. Simulation and vehicle test results show that the system, with relatively excellent universal accessibility and portability, is stable, reliable and able to meet international standards. Meanwhile, seamless integration of various file-based functions such as parameter monitoring, measurement, calibration, saving and offline review is realized, which greatly shortens the development cycle of vehicle and control system and cuts the development cost.%  利用ASAM-MCD标准中的CCP协议和ASAP2数据接口规范,开发了适用于电动汽车的通用型监控及标定系统,介绍了该系统的总体架构及相应模块的设计。仿真测试和实车测试结果表明,该系统运行稳定可靠,符合国标通用标准,具有较好的通用性和可移植性,实现了基于文件的参数监控、测量、标定、保存及离线回放等功能的无缝融合,极大地缩短了整车及其控制系统的开发周期,降低了开发成本。

  1. 基于以太网通信的水下航行器远程监控系统设计%Remote Monitoring and Control System of Underwater Vehicle Based on Ethernet Network

    Institute of Scientific and Technical Information of China (English)

    赵蕊; 余琨; 郑文成; 向先波

    2015-01-01

    讨论以太网Socket通信基本原理和航行器监控系统通信协议的确定,介绍便携式水面监控台和水下控制系统的功能及设计方法,完成水池试验联调,试验结果表明,基于TCP/IP的通信协议,水面监控台可以实时地完成对水下航行器的数据监视、远程遥控和半自主控制。%The fundamental principle of Socket and determination of the communication protocol are introduced.The func-tions and design methods of surface monitoring station and underwater monitoring system are discussed to build the two-stage sys-tem and design the software.The system is tested in the water tank.Test results show that surface monitoring station can complete the real-time data monitoring of underwater vehicles, remote operation and semi-autonomous control.

  2. Depth Level Control System using Peripheral Interface Controller for Underwater Vehicle

    Directory of Open Access Journals (Sweden)

    Muhamad Fadli Ghani

    2013-01-01

    Full Text Available This research explained on a design and development of an Automatic Depth Control System for underwater vehicle. Definition of underwater vehicle is a robotic sub-sea that is a part of the emerging field of autonomous and unmanned vehicles. This project shows the implementation’s development of an Automatic Depth Control System on a test prototyping vehicle especially involved small-scale and low cost sub-sea robots. The Automatic Depth Control System assembled with mechanical system and module of electronic system for development of a controller.

  3. Path Tracking Control of Automatic Parking Cloud Model considering the Influence of Time Delay

    Directory of Open Access Journals (Sweden)

    Yiding Hua

    2017-01-01

    Full Text Available This paper establishes the kinematic model of the automatic parking system and analyzes the kinematic constraints of the vehicle. Furthermore, it solves the problem where the traditional automatic parking system model fails to take into account the time delay. Firstly, based on simulating calculation, the influence of time delay on the dynamic trajectory of a vehicle in the automatic parking system is analyzed under the transverse distance Dlateral between different target spaces. Secondly, on the basis of cloud model, this paper utilizes the tracking control of an intelligent path closer to human intelligent behavior to further study the Cloud Generator-based parking path tracking control method and construct a vehicle path tracking control model. Moreover, tracking and steering control effects of the model are verified through simulation analysis. Finally, the effectiveness and timeliness of automatic parking controller in the aspect of path tracking are tested through a real vehicle experiment.

  4. Mediation and Automatization.

    Science.gov (United States)

    Hutchins, Edwin

    This paper discusses the relationship between the mediation of task performance by some structure that is not inherent in the task domain itself and the phenomenon of automatization, in which skilled performance becomes effortless or phenomenologically "automatic" after extensive practice. The use of a common simple explicit mediating…

  5. Digital automatic gain control

    Science.gov (United States)

    Uzdy, Z.

    1980-01-01

    Performance analysis, used to evaluated fitness of several circuits to digital automatic gain control (AGC), indicates that digital integrator employing coherent amplitude detector (CAD) is best device suited for application. Circuit reduces gain error to half that of conventional analog AGC while making it possible to automatically modify response of receiver to match incoming signal conditions.

  6. Automatic Differentiation Package

    Energy Technology Data Exchange (ETDEWEB)

    2007-03-01

    Sacado is an automatic differentiation package for C++ codes using operator overloading and C++ templating. Sacado provide forward, reverse, and Taylor polynomial automatic differentiation classes and utilities for incorporating these classes into C++ codes. Users can compute derivatives of computations arising in engineering and scientific applications, including nonlinear equation solving, time integration, sensitivity analysis, stability analysis, optimization and uncertainity quantification.

  7. Control of Multiple Robotic Sentry Vehicles

    Energy Technology Data Exchange (ETDEWEB)

    Feddema, J.; Klarer, P.; Lewis, C.

    1999-04-01

    As part of a project for the Defense Advanced Research Projects Agency, Sandia National Laboratories is developing and testing the feasibility of using of a cooperative team of robotic sentry vehicles to guard a perimeter and to perform surround and diversion tasks. This paper describes on-going activities in the development of these robotic sentry vehicles. To date, we have developed a robotic perimeter detection system which consists of eight ''Roving All Terrain Lunar Explorer Rover'' (RATLER{trademark}) vehicles, a laptop-based base-station, and several Miniature Intrusion Detection Sensors (MIDS). A radio frequency receiver on each of the RATLER vehicles alerts the sentry vehicles of alarms from the hidden MIDS. When an alarm is received, each vehicle decides whether it should investigate the alarm based on the proximity of itself and the other vehicles to the alarm. As one vehicle attends an alarm, the other vehicles adjust their position around the perimeter to better prepare for another alarm. We have also demonstrated the ability to drive multiple vehicles in formation via tele-operation or by waypoint GPS navigation. This is currently being extended to include mission planning capabilities. At the base-station, the operator can draw on an aerial map the goal regions to be surrounded and the repulsive regions to be avoided. A potential field path planner automatically generates a path from the vehicles' current position to the goal regions while avoiding the repulsive regions and the other vehicles. This path is previewed to the operator before the regions are downloaded to the vehicles. The same potential field path planner resides on the vehicle, except additional repulsive forces from on-board proximity sensors guide the vehicle away from unplanned obstacles.

  8. Unmanned Aerial Vehicle Serial Aerial Image Automatic Registration Based on Improved SIFT Algorithm%改进SIFT算法的小型无人机航拍图像自动配准

    Institute of Scientific and Technical Information of China (English)

    熊自明; 万刚; 闫鹤; 李明

    2012-01-01

    针对小型无人机航拍图像视点离散、视角变化有一定运动规律的特点,首先对航拍图像进行数据预处理,结合Harris特征点和SIFT特征向量的优势,提取Harris特征点、计算特征点的特征半径和SIFT特征向量,并利用PCA降低特征向量的维数;然后采用最邻近(NN)方法进行特征匹配,利用BBF算法搜索特征的最邻近以提高匹配速度;最后采用PROSAC算法提纯特征点匹配对并精确计算运动模型参数,实现了图像的自动配准.实验证明,该图像配准方法在准确性、效率方面较经典的SIFT算法有较大的提高.%Due to the disperse and regular of view points and the view angle of UAV Aerial Image, the image data was preconditioned at first, then the Harris feature points with SIFT feature vectors were combined, Harris feature points were extracted, the characteristics radius of feature points and SIFT feature vector was calculated, and PCA (Principal Component Analysis) was used to reduce the dimension of SIFT feature vectors. And then the most close method (NN) was used to feature matching, the BBF algorithm was applied to search the nearest neighbor feature for improving the matching speed. Finally, the PROSAC algorithm was used to purify initial feature point matching pairs, and motion model parameters were calculated, the image automatic registration was achieved. The results of experiment proved that such algorithm was more efficient and exact than the classic SIFT algorithm.

  9. Design and implementation of automatic monitoring system for layers production parameters%蛋鸡生产参数自动监测系统设计与实现

    Institute of Scientific and Technical Information of China (English)

    王春山; 李久熙; 黄仁录; 吕继兴; 李丽华

    2014-01-01

    为了在蛋鸡自然状态下,实现对其采食量、饮水量、排泄量、产蛋时间、蛋质量等生产参数的长期自动采集,克服人工采集工作量大,鸡应激反应造成误差大等问题,设计并实现了基于传感器网络的蛋鸡生产参数自动监测系统。该装置运用人机工程学的设计方法,将传统鸡笼与传感器有机结合,实现了对蛋鸡生产参数无干扰远程监测。该文重点分析了鸡笼的机械结构设计、传感器通信原理、数据采集与分析利用问题。试验结果表明,系统运行稳定,采食量、饮水量、排泄量、蛋质量平均相对误差均小于0.2%。该研究提高了监测数据的精确性,为蛋鸡养殖中科研数据收集、分析和利用提供了新方法和手段,为进一步研究蛋鸡生长过程中生产参数的无干扰自动采集技术提供了参考。%In order to identify and avoid risks during the breeding process of laying hens, it is necessary to acquire real-time and continuous data of laying hens’ physiology and production parameters. At present, data acquisition and processing is mainly dependent on the manual mode, which is a very costly and time consuming process. Meanwhile, the data obtained from human observation involves strong subjectivity, which could be disadvantageous for carrying out accurate, stable, and continuous recording. In addition, the manual mode of data measurement will affect the living environment and physiological state of laying hens, and even cause stress reactions. This will, in turn, affect the accuracy of data monitoring. Therefore, if there is an approach to collect all kinds of physiology and production parameters of laying hens in the natural state, the acquired data will be more accurate and closer to the actual situation of the testing objects. On the basis of previous studies, this paper proposes an automatic data monitoring system for laying hens’ production parameters based on

  10. Abandoned vehicles

    CERN Multimedia

    Relations with the Host States Service

    2004-01-01

    The services in charge of managing the CERN site have recently noted an increase in the number of abandoned vehicles. This poses a risk from the point of view of safety and security and, on the eve of several important events in honour of CERN's fiftieth anniversary, is detrimental to the Organization's image. Owners of vehicles that have been left immobile for some time on the CERN site, including on the external car park by the flags, are therefore invited to contact the Reception and Access Control Service (service-parking-longterm@cern.ch) before 1st October 2004 and, where appropriate, move their vehicle to a designated long-term parking area. After this date, any vehicle whose owner has failed to respond to this request and which is without a number plate, has been stationary for several weeks or is out of service, may be impounded at the owner's risk and expense. Relations with the Host States Service Tel. 72848

  11. Performance of an Automated-Mixed-Traffic-Vehicle /AMTV/ System. [urban people mover

    Science.gov (United States)

    Peng, T. K. C.; Chon, K.

    1978-01-01

    This study analyzes the operation and evaluates the expected performance of a proposed automatic guideway transit system which uses low-speed Automated Mixed Traffic Vehicles (AMTV's). Vehicle scheduling and headway control policies are evaluated with a transit system simulation model. The effect of mixed-traffic interference on the average vehicle speed is examined with a vehicle-pedestrian interface model. Control parameters regulating vehicle speed are evaluated for safe stopping and passenger comfort.

  12. Integrated G and C Implementation within IDOS: A Simulink Based Reusable Launch Vehicle Simulation

    Science.gov (United States)

    Fisher, Joseph E.; Bevacqua, Tim; Lawrence, Douglas A.; Zhu, J. Jim; Mahoney, Michael

    2003-01-01

    The implementation of multiple Integrated Guidance and Control (IG&C) algorithms per flight phase within a vehicle simulation poses a daunting task to coordinate algorithm interactions with the other G&C components and with vehicle subsystems. Currently being developed by Universal Space Lines LLC (USL) under contract from NASA, the Integrated Development and Operations System (IDOS) contains a high fidelity Simulink vehicle simulation, which provides a means to test cutting edge G&C technologies. Combining the modularity of this vehicle simulation and Simulink s built-in primitive blocks provide a quick way to implement algorithms. To add discrete-event functionality to the unfinished IDOS simulation, Vehicle Event Manager (VEM) and Integrated Vehicle Health Monitoring (IVHM) subsystems were created to provide discrete-event and pseudo-health monitoring processing capabilities. Matlab's Stateflow is used to create the IVHM and Event Manager subsystems and to implement a supervisory logic controller referred to as the Auto-commander as part of the IG&C to coordinate the control system adaptation and reconfiguration and to select the control and guidance algorithms for a given flight phase. Manual creation of the Stateflow charts for all of these subsystems is a tedious and time-consuming process. The Stateflow Auto-builder was developed as a Matlab based software tool for the automatic generation of a Stateflow chart from information contained in a database. This paper describes the IG&C, VEM and IVHM implementations in IDOS. In addition, this paper describes the Stateflow Auto-builder.

  13. 四轴车辆全轮转向之自动模式研究%A Research on the Automatic Mode of All-wheel Steering for Four-axle Vehicle

    Institute of Scientific and Technical Information of China (English)

    陈思忠; 郑凯锋

    2015-01-01

    在第2轴转角比例于第1轴转角,第3轴转角比例于第4轴转角的条件下,从理论上分析了全轮转向与双前桥转向之间的差异。接着以质心侧偏角为零,设计了控制器一和控制器二两种控制器,并再次分析了双前桥转向、带控制器一的全轮转向和带控制器二的全轮转向三者之间的区别与联系,为四轴车辆的全轮转向技术的研究提供了理论参考。%Under the condition of that the wheel turning angles in second and third axles are respectively proportional to those of first and fourth axles, the differences between all wheel steering and double-front-axle steer-ing are analyzed theoretically. Then with the sideslip angle of mass center set to zero, controller 1 and controller 2 are designed, and the differences and connections between double-front-axle steering, all wheel steering with con-troller 1 and all wheel steering with controller 2 are analyzed again, providing theoretical references for the research on the all wheel steering technique for four-axle vehicle.

  14. Discussion on Construction of Automatic Monitoring Points of Ambient Air in New District of Dandong City%关于在丹东市新城区建设环境空气自动监测点位的阐述

    Institute of Scientific and Technical Information of China (English)

    梁松筠

    2014-01-01

    According to current situation of ambient air automatic monitoring points in Dandong city, com-bined with monitoring of ambient air quality and requirement of the creation of environmental protection model city, we consider to construct ambient air automatic monitoring points in new district which ensures distribution uniformity of ambient air monitoring points and reflects the pollution status and the change tendency of main source of air pollution in main function district of new town.%根据丹东市环境空气自动监测点位现状,结合环境空气质量监测规范及创建环境保护模范城的要求。考虑在新城区建设环境空气自动监测点位。这样可以保证丹东市各行政区环境空气监测点位分布的均匀性,反映新城区主要功能区和主要空气污染源的污染状况及变化趋势。

  15. Vehicle passes detector based on multi-sensor analysis

    Science.gov (United States)

    Bocharov, D.; Sidorchuk, D.; Konovalenko, I.; Koptelov, I.

    2015-02-01

    The study concerned deals with a new approach to the problem of detecting vehicle passes in vision-based automatic vehicle classification system. Essential non-affinity image variations and signals from induction loop are the events that can be considered as detectors of an object presence. We propose several vehicle detection techniques based on image processing and induction loop signal analysis. Also we suggest a combined method based on multi-sensor analysis to improve vehicle detection performance. Experimental results in complex outdoor environments show that the proposed multi-sensor algorithm is effective for vehicles detection.

  16. Design and Analysis of Automatic Car Park System with Capacity Control

    Directory of Open Access Journals (Sweden)

    Musa Mohammed Gujja

    2015-08-01

    Full Text Available :The need for an automatic car park gate system has been in increase in recent times following the economic situation in present days. The circuit is aimed at eliminating manual operation of a car park. It incorporate the use of LM741 op-amp and CD4017 decade counter for controlling the number of vehicle that can have access to the parking premises and the circuit is fixed close to the gate with the sensor tragically located where it can sense the presence of a car. The light dependent resistor (LDR senses both entrance and exit of the cars and this followed the maximum of three cars in the case of this design. As a monitoring and control system, when you comes close to the gate the light dependent resistor senses an incoming car which allows the gate to open automatically and closed when done. This process is same for outgoing cars. This module make use of an optical sensor, whose resistance changes with the intensity of light (Horowitz, 1980 the type use is ORP12 and it has a dark resistance of 10MΩ. When light rays are focused on the light dependent resistor (LDR, the resistance becomes very low (0-500Ω but when the rays are interrupted, the increases to its dark resistance (Huiyu, 2010. The variable resistor is used to vary the sensitivity of the light dependent resistor. It is otherwise called dark activated sensor. For the design two conditions are considered. First, when light rays are focused on the ORP12, and second, when the rays are being interrupted. The counter registers and displays the number of vehicle crossing the gate (both entrance and exit and allows maximum of three cars. Once the maximum is reached, the gate entrance remains closed and inaccessible, until another vehicle leaves the park. The car park system comprises of the sensor unit, trigger circuitry, display unit (switching unit and the power supply unit.

  17. Calibration and study of the measurement capabilities of real-time gamma spectrometry equipment developed for the renewal of the network of stations automatic monitoring environmental radiation of the Generalitat of Catalunya; Calibracion y estudio de las capacidades de medida de los equipos de espectrometria gamma en tiempo real desarrollados para la renovacion de la Red de Estaciones Automaticas de vigilancia radiologia ambiental de la Generalitat de Catalunya

    Energy Technology Data Exchange (ETDEWEB)

    Casanovas, R.; Prieto, E.; Salvado, M.

    2014-10-01

    The renewal of the automatic environmental radiation surveillance network of the Generalitat of Catalunya has been carried out through the development and implementation of gamma-spectrometry-based equipment. the monitors use scintillation crystals, either Na(TI) or LaBr{sub 3}(Ce) and currently, there are 3 types of equipment water radioactivity monitors, aerosols on a particulate filter monitors and direct measurement monitors. In this paper, we expose the basic features of its operation, the details of their calibration and the minimum detectable activity concentration for some isotopes. (Author)

  18. Small-Scale Helicopter Automatic Autorotation: Modeling, Guidance, and Control

    NARCIS (Netherlands)

    Taamallah, S.

    2015-01-01

    Our research objective consists in developing a, model-based, automatic safety recovery system, for a small-scale helicopter Unmanned Aerial Vehicle (UAV) in autorotation, i.e. an engine OFF flight condition, that safely flies and lands the helicopter to a pre-specified ground location. In pursuit o

  19. Automatic Video Monitor and Record System for High-Power AC Diesel Locomotive%大功率交流内燃机车自动视频监控及记录系统

    Institute of Scientific and Technical Information of China (English)

    鲁渝玲

    2012-01-01

    介绍了自动视频监控和记录系统在大功率交流内燃机车上的构成及应用.采用在车前、车后、车内等部位安装多路摄像头,并可对机车的运行状态的图像和数据进行显示、记录、同步回放或分类检索的方式,使司机能及时从操纵台的显示屏了解到车内各机械间和前后方道路的情况,避免了以往司机必须亲自进到各设备间对部件进行定期故障检查的情况,也提高了车外环境监控的准确性.这样不仅降低了司机的工作强度,还提高了监控的全面性和行车的安全性,特别对于目前铁路机车驾驶由正、副司机操作改革为单司机值乘的方案具有重要的适用意义.%Constitutes and applications of automatic video monitor and record system for high-power AC diesel locomotive are introduced. The system is equipped with several video cameras separately mounted in the front, rear and inside of the loco. The retrievable video images and related data of loco running status are displayed, recorded,and assorted. By this way,drivers can get sufficient information of loco work status inside each cabinets and road situations outside the loco from displays on the console without coming into every mechanical cabinet with more accurate circumstance information outside loco. Therefore, the driver' s working intensity is reduced,and loco application safety is increased. Its significance is especially prominent under present railway steering scheme as main-assistant driver mode being changed into one single driver mode.

  20. Automotive Control Systems: For Engine, Driveline, and Vehicle

    Science.gov (United States)

    Kiencke, Uwe; Nielsen, Lars

    Advances in automotive control systems continue to enhance safety and comfort and to reduce fuel consumption and emissions. Reflecting the trend to optimization through integrative approaches for engine, driveline, and vehicle control, this valuable book enables control engineers to understand engine and vehicle models necessary for controller design, and also introduces mechanical engineers to vehicle-specific signal processing and automatic control. The emphasis on measurement, comparisons between performance and modeling, and realistic examples derive from the authors' unique industrial experience

  1. Plume-based analysis of vehicle fleet air pollutant emissions and the contribution from high emitters

    Directory of Open Access Journals (Sweden)

    J. M. Wang

    2015-03-01

    Full Text Available An automated identification and integration method has been developed to investigate in-use vehicle emissions under real-world conditions. This technique was applied to high time resolution air pollutant measurements of in-use vehicle emissions performed under real-world conditions at a near-road monitoring station in Toronto, Canada during four seasons, through month-long campaigns in 2013–2014. Based on carbon dioxide measurements, over 100 000 vehicle-related plumes were automatically identified and fuel-based emission factors for nitrogen oxides; carbon monoxide; particle number, black carbon; benzene, toluene, ethylbenzene, and xylenes (BTEX; and methanol were determined for each plume. Thus the automated identification enabled the measurement of an unprecedented number of plumes and pollutants over an extended duration. Emission factors for volatile organic compounds were also measured roadside for the first time using a proton transfer reaction time-of-flight mass spectrometer; this instrument provided the time resolution required for the plume capture technique. Mean emission factors were characteristic of the light-duty gasoline dominated vehicle fleet present at the measurement site, with mean black carbon and particle number emission factors of 35 mg kg−1 and 7.7 × 1014 kg−1, respectively. The use of the plume-by-plume analysis enabled isolation of vehicle emissions, and the elucidation of co-emitted pollutants from similar vehicle types, variability of emissions across the fleet, and the relative contribution from heavy emitters. It was found that a small proportion of the fleet (< 25% contributed significantly to total fleet emissions; 95, 93, 76, and 75% for black carbon, carbon monoxide, BTEX, and particle number, respectively. Emission factors of a single pollutant may help classify a vehicle as a high emitter. However, regulatory strategies to more efficiently target multi-pollutants mixtures may be better developed by

  2. Software architecture of biomimetic underwater vehicle

    Science.gov (United States)

    Praczyk, Tomasz; Szymak, Piotr

    2016-05-01

    Autonomous underwater vehicles are vehicles that are entirely or partly independent of human decisions. In order to obtain operational independence, the vehicles have to be equipped with a specialized software. The main task of the software is to move the vehicle along a trajectory with collision avoidance. Moreover, the software has also to manage different devices installed on the vehicle board, e.g. to start and stop cameras, sonars etc. In addition to the software embedded on the vehicle board, the software responsible for managing the vehicle by the operator is also necessary. Its task is to define mission of the vehicle, to start, to stop the mission, to send emergency commands, to monitor vehicle parameters, and to control the vehicle in remotely operated mode. An important objective of the software is also to support development and tests of other software components. To this end, a simulation environment is necessary, i.e. simulation model of the vehicle and all its key devices, the model of the sea environment, and the software to visualize behavior of the vehicle. The paper presents architecture of the software designed for biomimetic autonomous underwater vehicle (BAUV) that is being constructed within the framework of the scientific project financed by Polish National Center of Research and Development.

  3. Real-Time Rocket/Vehicle System Integrated Health Management Laboratory For Development and Testing of Health Monitoring/Management Systems

    Science.gov (United States)

    Aguilar, R.

    2006-01-01

    Pratt & Whitney Rocketdyne has developed a real-time engine/vehicle system integrated health management laboratory, or testbed, for developing and testing health management system concepts. This laboratory simulates components of an integrated system such as the rocket engine, rocket engine controller, vehicle or test controller, as well as a health management computer on separate general purpose computers. These general purpose computers can be replaced with more realistic components such as actual electronic controllers and valve actuators for hardware-in-the-loop simulation. Various engine configurations and propellant combinations are available. Fault or failure insertion capability on-the-fly using direct memory insertion from a user console is used to test system detection and response. The laboratory is currently capable of simulating the flow-path of a single rocket engine but work is underway to include structural and multiengine simulation capability as well as a dedicated data acquisition system. The ultimate goal is to simulate as accurately and realistically as possible the environment in which the health management system will operate including noise, dynamic response of the engine/engine controller, sensor time delays, and asynchronous operation of the various components. The rationale for the laboratory is also discussed including limited alternatives for demonstrating the effectiveness and safety of a flight system.

  4. Design and Implementation of Logistics and Vehicle Monitoring System Based on the Internet of Things%基于物联网的物流车辆监控系统的设计与实现

    Institute of Scientific and Technical Information of China (English)

    苏永红

    2011-01-01

    The paper introduces the principle of the logistics and vehicle monitoring system, the systemic hardware collectivity frame, the systemic software collectivity frame and some key technologies for implement the system based on the conception and the configuration of the internet of things. The system could realize some functions such as the orientation and track using GPS. Directing the transport routes, output the vehicle accumulative weights, querying history data, tracing real time instances and so on. The system could effectively solve the problem of the inspection and management of the transport tasks, consequently greatly improve the efficiency of the management of the transport tasks.%论文基于物联网的基本概念和体系结构,对物流车辆监控系统的原理、系统硬件总体框架、系统软件总体框架结构的设计和系统实现的关键技术进行了介绍,该系统能实现GPS定位跟踪、运输路线指挥、累计重量报表输出、历史数据查询和实时情况追踪等功能,能有效地解决运输任务的监控和管理,从而大大提高了运输任务管理的效率.

  5. 全自动阵列离子迁移谱仪连续监测挥发性有机化合物%Automatic Continuous Monitoring of Volatile Organic Compounds Using Ion Mobility Spectrometer Array

    Institute of Scientific and Technical Information of China (English)

    周庆华; 李海洋; 仓怀文; 鞠帮玉; 李林; 杜永斋; 陈创; 侯可勇; 李京华; 王卫国

    2011-01-01

    An ion mobility spectrometer array was designed,in order to broaden the detection range of ion mobility spectrometer and improve the accuracy of compound identification.This instrument was based on the combination of ionization sources of 63Ni positive ion mode,63Ni negative ion mode and photoionization mode with vacuum UV lamp,and it can continuously monitor the volatile organic compounds in air.With the automatic system of sampling and injection of this instrument,the positive ion of dimethyl sulfoxide and negative ion of dichloromethane were detected simultaneously.By comprehensive analysis of spectra with ion mobility spectrometer array,acrylonitrile,m-xylene and acetone were identified,which were difficult to be distinguished under the63Ni positive ion mode.Acetone samples were determined quantitatively within four days continuously,and the results indicated that the linear range of acetone in this instrument was 2 orders of magnitude.The linear correlation coefficient R was higher than 0.995,and the relative standard deviations were controlled in the range of 4.0%-18.3%.Methacrylate leaked in simulation was monitored on-line for 24 h continuously,using the method of dynamic tracking,and the result showed the leaking time and the concentration of methacrylate directly.%为了拓宽离子迁移谱仪的检测范围、提高化合物的识别准确度,研制了一套阵列离子迁移谱仪,该仪器基于63 Ni源正离子模式、63Ni源负离子模式和真空紫外灯光电离模式的组合电离源,可以连续监测空气中挥发性有机化合物.仪器采用全自动的采样进样系统,同时检测了二甲基亚砜的正离子和二氯甲烷的负离子,实现了正负离子的同时检测.通过对阵列离子迁移谱图的综合解析,识别了63Ni源正离子模式下难以鉴别的丙烯腈、间二甲苯和丙酮.连续4 d定量测定丙酮样品,结果表明仪器对丙酮的线性检测范围为2个数量级,线性相关系数R优于0.995,

  6. electric vehicle

    Directory of Open Access Journals (Sweden)

    W. R. Lee

    1999-01-01

    Full Text Available A major problem facing battery-powered electric vehicles is in their batteries: weight and charge capacity. Thus, a battery-powered electric vehicle only has a short driving range. To travel for a longer distance, the batteries are required to be recharged frequently. In this paper, we construct a model for a battery-powered electric vehicle, in which driving strategy is to be obtained such that the total travelling time between two locations is minimized. The problem is formulated as an optimization problem with switching times and speed as decision variables. This is an unconventional optimization problem. However, by using the control parametrization enhancing technique (CPET, it is shown that this unconventional optimization is equivalent to a conventional optimal parameter selection problem. Numerical examples are solved using the proposed method.

  7. Development of Mobile Radiological Monitor

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>Mobile radiological monitor is used to detect gamma rays and neutron for personal and vehicle. It can be installed on a microbus as a mobile monitoring system. One large plastic scintillation detector is

  8. Word Automaticity of Tree Automatic Scattered Linear Orderings Is Decidable

    CERN Document Server

    Huschenbett, Martin

    2012-01-01

    A tree automatic structure is a structure whose domain can be encoded by a regular tree language such that each relation is recognisable by a finite automaton processing tuples of trees synchronously. Words can be regarded as specific simple trees and a structure is word automatic if it is encodable using only these trees. The question naturally arises whether a given tree automatic structure is already word automatic. We prove that this problem is decidable for tree automatic scattered linear orderings. Moreover, we show that in case of a positive answer a word automatic presentation is computable from the tree automatic presentation.

  9. Experience of the ARGO autonomous vehicle

    Science.gov (United States)

    Bertozzi, Massimo; Broggi, Alberto; Conte, Gianni; Fascioli, Alessandra

    1998-07-01

    This paper presents and discusses the first results obtained by the GOLD (Generic Obstacle and Lane Detection) system as an automatic driver of ARGO. ARGO is a Lancia Thema passenger car equipped with a vision-based system that allows to extract road and environmental information from the acquired scene. By means of stereo vision, obstacles on the road are detected and localized, while the processing of a single monocular image allows to extract the road geometry in front of the vehicle. The generality of the underlying approach allows to detect generic obstacles (without constraints on shape, color, or symmetry) and to detect lane markings even in dark and in strong shadow conditions. The hardware system consists of a PC Pentium 200 Mhz with MMX technology and a frame-grabber board able to acquire 3 b/w images simultaneously; the result of the processing (position of obstacles and geometry of the road) is used to drive an actuator on the steering wheel, while debug information are presented to the user on an on-board monitor and a led-based control panel.

  10. Design of Bridge-Detection Vehicle Monitoring System Based on Android%基于Android的桥梁检测车安全监控系统的设计

    Institute of Scientific and Technical Information of China (English)

    张麒; 王秀敏; 任建新

    2012-01-01

    为解决国内桥梁检测车全局监控设备以及碰撞警报设备缺乏的问题,设计并实现了基于Android平台的一套智能监控系统.该系统通过倾角传感器采集的数据,用3D模型实时模拟机械臂的姿态,以达到全局监控的目的.同时可以根据实际情况构建虚拟障碍物,实现机械臂与障碍物碰撞的逼真模拟与警报.结果表明,该系统性能可靠、实用性强,不但解决了传统视频监控无法达到全局监控的问题,还对人工规避障碍物提供了可靠的参考.%To solve the problem of lacking of global monitoring device and collision warning device for domestic bridge-detection vehicle,we design and implement an intelligent monitoring system based on Android. The system uses real-time 3D model to simulate robot arm posture in realtime from tilt sensor, a-chieving global monitoring. The system can also build virtual obstacles based on actual situation,to simulate the collision between robot arm and obstacles vividly. If collision was detected,the system will trigger the alarm. Result shows that the system has reliable performance as well as strong practicability, it not only solve the problems of the traditional video surveillance can not reach the global monitoring, and also provides a reliable reference for avoiding obstacles by labour.

  11. Line matching for automatic change detection algorithm

    Science.gov (United States)

    Dhollande, Jérôme; Monnin, David; Gond, Laetitia; Cudel, Christophe; Kohler, Sophie; Dieterlen, Alain

    2012-06-01

    During foreign operations, Improvised Explosive Devices (IEDs) are one of major threats that soldiers may unfortunately encounter along itineraries. Based on a vehicle-mounted camera, we propose an original approach by image comparison to detect signicant changes on these roads. The classic 2D-image registration techniques do not take into account parallax phenomena. The consequence is that the misregistration errors could be detected as changes. According to stereovision principles, our automatic method compares intensity proles along corresponding epipolar lines by extrema matching. An adaptive space warping compensates scale dierence in 3D-scene. When the signals are matched, the signal dierence highlights changes which are marked in current video.

  12. Changqing Oilfield GPS Vehicle Monitoring System Design and Application of Trace Data%长庆油田GPS车辆监控系统轨迹数据设计与应用

    Institute of Scientific and Technical Information of China (English)

    赵立峰; 庾凌

    2014-01-01

    With the rapid development of computer technology, global positioning system (GPS) to get attention and widely used in various industries to achieve a GPS navigation information on a GIS visualization, integration and integration. The tech⁃nology also has been deeply Changqing Oilfield applications, building into a unified coverage of the whole field, with multi-function, support a variety of end products vehicle monitoring and management scheduling systems, platforms, users can rely on GPS nationwide satellite network operators, Changqing Oilfield enterprise network to achieve accurate positioning of vehicles, speed control, monitoring, scheduling, query and other functions, make full use of network resources and database technology, the formation of a new vehicle management and operation mode, the entire sharing oil company vehicles resource information. Achieve a mileage statistics, self-built roads and oil region gathering information points and draw maps, remote coordination of road traffic safety management, traffic safety decision making and risk assessment analysis from the macro to make Changqing Oil⁃field safety management approach, content, form occurs a fundamental change to improve the efficiency of the vehicle safety.%随着计算机技术的飞速发展,全球定位系统(GPS)在各行各业中得到广泛的重视和应用,实现了GPS导航信息在GIS上的可视化、一体化和集成化。该技术也在长庆油田得到了深入的应用,建设成了一个统一的覆盖全油田范围的、具备多功能、支持多种终端产品的车辆监控管理调度系统,平台用户可在全国范围内依靠GPS卫星、运营商网络、长庆油田企业网来实现车辆的精确定位、速度控制、监控、调度、查询等功能,充分利用网络资源和数据库技术,形成了全新的车辆管理模式和运行方式,实现整个油田公司车辆资源信息的共享。实现了里程统计、油区

  13. Pajarito Monitor: a high-sensitivity monitoring system for highly enriched uranium

    Energy Technology Data Exchange (ETDEWEB)

    Fehlau, P.E.; Coop, K.; Garcia, C. Jr.; Martinez, J.

    1984-01-01

    The Pajarito Monitor for Special Nuclear Material is a high-sensitivity gamma-ray monitoring system for detecting small quantities of highly enriched uranium transported by pedestrians or motor vehicles. The monitor consists of two components: a walk-through personnel monitor and a vehicle monitor. The personnel monitor has a plastic-scintillator detector portal, a microwave occupancy monitor, and a microprocessor control unit that measures the radiation intensity during background and monitoring periods to detect transient diversion signals. The vehicle monitor examines stationary motor vehicles while the vehicle's occupants pass through the personnel portal to exchange their badges. The vehicle monitor has four groups of large plastic scintillators that scan the vehicle from above and below. Its microprocessor control unit measures separate radiation intensities in each detector group. Vehicle occupancy is sensed by a highway traffic detection system. Each monitor's controller is responsible for detecting diversion as well as serving as a calibration and trouble-shooting aid. Diversion signals are detected by a sequential probability ratio hypothesis test that minimizes the monitoring time in the vehicle monitor and adapts itself well to variations in individual passage speed in the personnel monitor. Designed to be highly sensitive to diverted enriched uranium, the monitoring system also exhibits exceptional sensitivity for plutonium. 6 references, 9 figures, 2 tables.

  14. 电动汽车快速充电机监控终端的设计%Design of fast charger monitoring terminal for electric vehicles

    Institute of Scientific and Technical Information of China (English)

    蔡贵方; 李优新; 姚震; 张泱泱; 张进坤

    2013-01-01

      With the coming of Internet of Things age,the design of monitoring terminal for fast charger becomes a key tech⁃nology for realizing intelligent remote management. The whole design scheme of fast charger monitoring terminal is introduced, which is in combination with the microcontroller STM32 and the real⁃time operating system μC/OS⁃Ⅱ. The protocol establish⁃ment and software design method for high⁃power charger CAN bus and GPRS data transmission are studied. The economic analy⁃sis of GPRS flow cost is performed. The results show that the communication network is stable,and the monitoring terminal can realize the state monitoring and remote management for the charger.%  随着物联网时代的到来,实现对快速充电机的智能远程管理,其监控终端的设计是其中的关键技术。结合单片机STM32和实时操作系统μC/OS⁃Ⅱ,介绍了快速充电机监控终端的整体设计方案,研究了大功率充电机CAN总线及GPRS数据发送的协议制定及软件设计方法,并对GPRS流量费用进行了经济性分析。结果表明该监控终端保证监控网络工作稳定,实现对充电机的运行状态的监测及其远程管理。

  15. Automatic HDL firmware generation for FPGA-based reconfigurable measurement and control systems with mezzanines in FMC standard

    Science.gov (United States)

    Wojenski, Andrzej; Kasprowicz, Grzegorz; Pozniak, Krzysztof T.; Romaniuk, Ryszard

    2013-10-01

    The paper describes a concept of automatic firmware generation for reconfigurable measurement systems, which uses FPGA devices and measurement cards in FMC standard. Following sections are described in details: automatic HDL code generation for FPGA devices, automatic communication interfaces implementation, HDL drivers for measurement cards, automatic serial connection between multiple measurement backplane boards, automatic build of memory map (address space), automatic generated firmware management. Presented solutions are required in many advanced measurement systems, like Beam Position Monitors or GEM detectors. This work is a part of a wider project for automatic firmware generation and management of reconfigurable systems. Solutions presented in this paper are based on previous publication in SPIE.

  16. 自动拨测在集团客户短信业务网络监控中的应用研究%Application study on the measurement of network monitoring in the message service of the group customer based on the automatic dialing

    Institute of Scientific and Technical Information of China (English)

    李建荣

    2015-01-01

    In this paper, starting from the theoretical study of the measurement of network monitoring in the message service of the group customer, the difficulty of its network monitoring is summarized. The use of automatic dialing measuring principle for the end-to-end network performance monitoring is provided. The end-to-end network performance and quality data is obtained by setting up automatic dialing measurement system, which play a better role for proactive monitoring, fault pretreatment, fault location, testing and other aspects of the business after business networks and network adjustment. So as to better monitor the health of the end-to-end network, which improve the service perception of group customer.%从集团客户短信业务网络特点出发,总结其网络监控的难点,提出利用自动拨测原理进行短信业务的端到端网络性能监控.通过搭建短信业务自动拨测系统,对短信业务网络进行轮询测试,获取端到端网络性能质量数据,能够在主动监控、故障预处理、故障定位、业务入网及网络调整后业务测试等方面发挥较好的作用,从而更好的监测网络的运行状况,提升客户服务感知.

  17. Automatic Classification of Attacks on IP Telephony

    Directory of Open Access Journals (Sweden)

    Jakub Safarik

    2013-01-01

    Full Text Available This article proposes an algorithm for automatic analysis of attack data in IP telephony network with a neural network. Data for the analysis is gathered from variable monitoring application running in the network. These monitoring systems are a typical part of nowadays network. Information from them is usually used after attack. It is possible to use an automatic classification of IP telephony attacks for nearly real-time classification and counter attack or mitigation of potential attacks. The classification use proposed neural network, and the article covers design of a neural network and its practical implementation. It contains also methods for neural network learning and data gathering functions from honeypot application.

  18. All-optical automatic pollen identification: Towards an operational system

    Science.gov (United States)

    Crouzy, Benoît; Stella, Michelle; Konzelmann, Thomas; Calpini, Bertrand; Clot, Bernard

    2016-09-01

    We present results from the development and validation campaign of an optical pollen monitoring method based on time-resolved scattering and fluorescence. Focus is first set on supervised learning algorithms for pollen-taxa identification and on the determination of aerosol properties (particle size and shape). The identification capability provides a basis for a pre-operational automatic pollen season monitoring performed in parallel to manual reference measurements (Hirst-type volumetric samplers). Airborne concentrations obtained from the automatic system are compatible with those from the manual method regarding total pollen and the automatic device provides real-time data reliably (one week interruption over five months). In addition, although the calibration dataset still needs to be completed, we are able to follow the grass pollen season. The high sampling from the automatic device allows to go beyond the commonly-presented daily values and we obtain statistically significant hourly concentrations. Finally, we discuss remaining challenges for obtaining an operational automatic monitoring system and how the generic validation environment developed for the present campaign could be used for further tests of automatic pollen monitoring devices.

  19. Design and Research of Monitoring System for Mechanical Beam of Bridge-detection Vehicle%桥梁检测车机械臂监控系统设计与研究

    Institute of Scientific and Technical Information of China (English)

    王秀敏; 杨世华; 沈建明; 朱烨俊

    2011-01-01

    Current security problem of Bridge-detection Vehicle is hard to be monitored during working period. Combining with dynamic analyses, a monitoring system is designed based on simulation of the movement of manipulator to slove the problem that video monitoring system cannot display the whole point of Meachanical Beam. Firstly, the space motion model of Mechanical Beam is built, using the value of angle and stretching length of Mechanical Beam collected by sensors, and then the Lagrange's equation is built up to estimate the risk through computering the roll moment. Finally, the Mechanical Beam is drawn by Qtopia and the risk rate of rollover is shown according to it' s location information. The experimental results show that this system can estimate the danger level of Bridge-detection Vehicle rollover in real-time and display the whole point of Meachanical Beam realisticly, after the intelligent, reliability and stability of the system are improved.%研究桥梁检测的优化问题,针对目前桥梁检测车工作过程中自身安全难以监控,为解决视频监控系统不能全角度整体显示机械臂姿态的问题,结合动力学分析提出了基于动画模拟机械臂动作的监控系统.通过传感器采集机械臂角度和伸展长度的信息,建立机械臂空间运动学模型,然后利用拉格朗日法计算机械臂的侧翻力矩作为危险估计的依据,根据机械臂定位信息,通过Qtopia实时绘出机械臂的姿态,给出桥检车的侧翻危险等级.经仿真证明,系统能够实时预测桥检车的危险等级和全角度逼真的显示机械臂位置,提高了监控系统的可靠性、智能化和稳定性,具有实际应用价值.

  20. Development of CAN Network Monitoring Platform for Hybrid Electric Vehicle Based on Virtual Instrument%基于虚拟仪器的混合动力汽车CAN网络监控平台

    Institute of Scientific and Technical Information of China (English)

    曾秋萍; 陈笃红; 邵斌

    2012-01-01

    Connected via twisted pair,the engine controller, motor controller, vehicle controller,battery management unit and instrument display controller constituted CAN communication network. The PC connected with CAN bus via the PXI - 8464 interface card, which could get the real-time parameters of each controller and modify the inner data of them. The CAN network monitoring platform for hybrid electric vehicle was developed by graphical programming language LabVIEW9.0. The monitoring platform has the function of real-time parameters displaying, command giving, data saving and interactive human-computer interface, and fully satisfy the requirements of CAN network monitoring for HEV. The experimental results show that the system has high reliability, simple operation, timely data processing, and greatly improved the test rig efficiency.%将混合动力汽车的发动机控制器、电机控制器、整车控制器、电池管理单元和仪表显示控制器通过双绞线相连,构成CAN通讯网络,上位机通过PXI-8464接口卡接到CAN总线上,实时读取各控制器的参数及修改控制器中的数据.采用图形化编程语言LabVIEW 9.0开发了混合动力汽车CAN网络监控平台,此平台具有参数实时显示、指令发送、数据保存等功能和良好的人机交互式界面,满足了混合动力汽车CAN网络监控的各种需求.试验表明:系统操作简单明了,数据处理及时可靠,极大地改善了台架性能试验的工作效率.

  1. Automatic removal of outliers in hydrologic time series and quality control of rainfall data: processing a real-time database of the Local System for Flood Monitoring in Klodzko County, Poland

    Science.gov (United States)

    Mizinski, Bartlomiej; Niedzielski, Tomasz; Kryza, Maciej; Szymanowski, Mariusz

    2013-04-01

    Real-time hydrological forecasting requires the highest quality of both hydrologic and meteorological data collected in a given river basin. Large outliers may lead to inaccurate predictions, with substantial departures between observations and prognoses considered even in short term. Although we need the correctness of both riverflow and rainfall data, they cannot be processed in the same way to produce a filtered output. Indeed, hydrologic time series at a given gauge can be interpolated in time domain after having detected suspicious values, however if no outlier has been detected at the upstream sites. In the case of rainfall data, interpolation is not suitable as we cannot verify the potential outliers at a given site against data from other sites especially in the complex terrain. This is due to the fact that very local convective events may occur, leading to large rainfall peaks at a limited space. Hence, instead of interpolating data, we rather perform a flagging procedure that only ranks outliers according to the likelihood of occurrence. Following the aforementioned assumptions, we have developed a few modules that serve a purpose of a fully automated correction of a database that is updated in real-time every 15 minutes, and the main objective of the work was to produce a high-quality database for a purpose of hydrologic rainfall-runoff modeling and ensemble prediction. The database in question is available courtesy of the County Office in Kłodzko (SW Poland), the institution which owns and maintains the Local System for Flood Monitoring in Kłodzko County. The dedicated prediction system, known as HydroProg, is now being built at the University of Wrocław (Poland). As the entire prediction system, the correction modules work automatically in real time and are developed in R language. They are plugged in to a larger IT infrastructure. Hydrologic time series, which are water levels recorded every 15 minutes at 22 gauges located in Kłodzko County, are

  2. Stability Control of Vehicle Emergency Braking with Tire Blowout

    Directory of Open Access Journals (Sweden)

    Qingzhang Chen

    2014-01-01

    Full Text Available For the stability control and slowing down the vehicle to a safe speed after tire failure, an emergency automatic braking system with independent intellectual property is developed. After the system has received a signal of tire blowout, the automatic braking mode of the vehicle is determined according to the position of the failure tire and the motion state of vehicle, and a control strategy for resisting tire blowout additional yaw torque and deceleration is designed to slow down vehicle to a safe speed in an expected trajectory. The simulating test system is also designed, and the testing results show that the vehicle can be quickly stabilized and kept in the original track after tire blowout with the emergency braking system described in the paper.

  3. Automatic Program Development

    DEFF Research Database (Denmark)

    by members of the IFIP Working Group 2.1 of which Bob was an active member. All papers are related to some of the research interests of Bob and, in particular, to the transformational development of programs and their algorithmic derivation from formal specifications. Automatic Program Development offers......Automatic Program Development is a tribute to Robert Paige (1947-1999), our accomplished and respected colleague, and moreover our good friend, whose untimely passing was a loss to our academic and research community. We have collected the revised, updated versions of the papers published in his...... honor in the Higher-Order and Symbolic Computation Journal in the years 2003 and 2005. Among them there are two papers by Bob: (i) a retrospective view of his research lines, and (ii) a proposal for future studies in the area of the automatic program derivation. The book also includes some papers...

  4. Status Monitoring Interface Design of Catenary Operation Vehicle Based on MT508TV5%基于MT508 TV5的接触网作业车状态监测界面设计

    Institute of Scientific and Technical Information of China (English)

    王静; 张宝霞; 柳彦虎

    2014-01-01

    叙述了对接触网作业车状态监测的必要性,同时对MT508 TV5触摸屏作了简要的说明。给出了利用EB500组态软件设计的监测界面及程序下载到触摸屏的方法,主要介绍通过EB500组态软件设置触摸屏与PLC通讯方式和参数的方法,并给出MT508TV5触摸屏与CP1H型PLC通过RS232连接的方法。最后对该监测界面运行调试结果及设计过程中遇到的问题作了简要的说明。%The necessity of catenary operation vehicle status monitoring is described .A brief description of the MT508 TV5 touch screen is given.The monitoring interface by use the EB500 configuration software interface design and the method of program downed to the screen are proposed .The method of the communication mode and parameters between the screen and PLC is mainly described, and the method of MT508TV5 communicate with the PLC of CP1H through RS232 is given.Finally, A brief description for monitoring interface debugging results and problems encountered in the design process are introduced .

  5. 基于物联网技术的汽车智能监测系统的实现%THE IMPLEMENTATION OF INTELLIGENT MONITORING SYSTEM FOR VEHICLES ORIENTED THE INTERNET OF THINGS

    Institute of Scientific and Technical Information of China (English)

    段升娟; 卢洪武; 高天雷; 高曦光

    2015-01-01

    Summer car spontaneous combustion accident,baby forgotten car choking phenomenon tragedy,car unattended theft of unnecessary loss of life and property to the people.To analyze the safety of the car use,inconjunction with the development status and social demands of the Internet of things,a set of oriented IOTintelligent vehicle monitoring system is designed.The system uses wireless sensor technology,Zigbee transmissiontechnology,GSMcommunication technology and data mining technology,composed of wireless monitoring sensorcluster,information acquisition gateway,mobile intelligent terminal and the server,The temperature and humiditydata measurement, infrared moving object perception, environmental image acquisition, data wireless datatransmission,storage,intelligent risk early warning function,convenient and reliable,high sensitivity,areachieved to monitor the car environment.The occurrence of accidents is prevented.%针对当前汽车使用的安全隐患,利用Zigbee传输技术、GSM通讯技术、WebService技术,设计了一套汽车智能监测系统,该系统由无线传感器集群、信息采集网关、移动智能终端和服务器组成,可以实现温湿度数据测量、红外移动物体感知、环境图像采集、无线数据传输、历史数据保存、智能风险预警等功能,轻便可靠,灵敏度高,能够有效地对车内环境进行监测,预防事故的发生。

  6. Automatic text summarization

    CERN Document Server

    Torres Moreno, Juan Manuel

    2014-01-01

    This new textbook examines the motivations and the different algorithms for automatic document summarization (ADS). We performed a recent state of the art. The book shows the main problems of ADS, difficulties and the solutions provided by the community. It presents recent advances in ADS, as well as current applications and trends. The approaches are statistical, linguistic and symbolic. Several exemples are included in order to clarify the theoretical concepts.  The books currently available in the area of Automatic Document Summarization are not recent. Powerful algorithms have been develop

  7. Automatic Camera Control

    DEFF Research Database (Denmark)

    Burelli, Paolo; Preuss, Mike

    2014-01-01

    Automatically generating computer animations is a challenging and complex problem with applications in games and film production. In this paper, we investigate howto translate a shot list for a virtual scene into a series of virtual camera configurations — i.e automatically controlling the virtual...... camera. We approach this problem by modelling it as a dynamic multi-objective optimisation problem and show how this metaphor allows a much richer expressiveness than a classical single objective approach. Finally, we showcase the application of a multi-objective evolutionary algorithm to generate a shot...

  8. An automatic evaluation system for NTA film neutron dosimeters

    CERN Document Server

    Müller, R

    1999-01-01

    At CERN, neutron personal monitoring for over 4000 collaborators is performed with Kodak NTA films, which have been shown to be the most suitable neutron dosimeter in the radiation environment around high-energy accelerators. To overcome the lengthy and strenuous manual scanning process with an optical microscope, an automatic analysis system has been developed. We report on the successful automatic scanning of NTA films irradiated with sup 2 sup 3 sup 8 Pu-Be source neutrons, which results in densely ionised recoil tracks, as well as on the extension of the method to higher energy neutrons causing sparse and fragmentary tracks. The application of the method in routine personal monitoring is discussed. $9 overcome the lengthy and strenuous manual scanning process with an optical microscope, an automatic analysis system has been developed. We report on the successful automatic scanning of NTA films irradiated with /sup 238/Pu-Be source $9 discussed. (10 refs).

  9. Vehicles Recognition Using Fuzzy Descriptors of Image Segments

    CERN Document Server

    Płaczek, Bartłomiej

    2011-01-01

    In this paper a vision-based vehicles recognition method is presented. Proposed method uses fuzzy description of image segments for automatic recognition of vehicles recorded in image data. The description takes into account selected geometrical properties and shape coefficients determined for segments of reference image (vehicle model). The proposed method was implemented using reasoning system with fuzzy rules. A vehicles recognition algorithm was developed based on the fuzzy rules describing shape and arrangement of the image segments that correspond to visible parts of a vehicle. An extension of the algorithm with set of fuzzy rules defined for different reference images (and various vehicle shapes) enables vehicles classification in traffic scenes. The devised method is suitable for application in video sensors for road traffic control and surveillance systems.

  10. Vehicle Real-time Location Based on Visual Perception Model

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    Vehicle recognition system (VRS) plays a very important role in the field of intelligent transportation systems.A novel and intuitive method is proposed for vehicle location.The method we provide for vehicle location is based on human visual perception model technique. The perception color space HSI in this algorithm is adopted.Three color components of a color image and more potential edge patterns are integrated for solving the feature extraction problem.A fast and automatic threshold technique based on human visual perception model is also developed.The vertical edge projection and horizontal edge projection are adopted for locating left-right boundary of vehicle and top-bottom boundary of vehicle, respectively. Very promising experimental results are obtained using real-time vehicle image sequences, which have confirmed that this proposed location vehicle method is efficient and reliable, and its calculation speed meets the needs of the VRS.

  11. Design of Scale Intelligent Vehicle System

    Science.gov (United States)

    Wang, Junliang; Zhang, Zufeng; Jia, Peng; Luo, Shaohua; Zhang, Zufeng

    Nowadays, intelligent vehicle is widely studied all over the world. On considering cost and safety of test on real vehicle, it takes scale intelligent vehicle as a carrier platform, which uses visual sensors to capture the environmental information in a Wi-Fi wireless communication network environment, and creates a system including video surveillance system, monitoring command terminal, data server and three-dimensional simulating test traffic environment. The core algorithms, such as road recognition perception, image data processing, path planning and the implementation of motion control, have been completely designed and applying on the vehicle platform. The experimental results verified its good effects and the robustness and stability of the algorithm.

  12. 基于 GPS/GPRS的客车远程监控系统设计与实现%Design and Implementation of Vehicle Remote Monitoring System Based on GPS/GPRS

    Institute of Scientific and Technical Information of China (English)

    卜峰; 李传江; 李欢; 陆雍南

    2014-01-01

    The remote monitoring system for bus based on GPS and GPRS is proposed,which can supervise the speed,location of a bus, and the actual number of passengers on it remotely.It consists of a vehicle terminal and a monitoring software of upper computer.The vehi-cle terminal uses STM32F103 MCU for acquisition and processing of the vehicle passenger number,the emergency alarm information,the latitude and longitude data from GPS,and uses GPRS chip,SIM908,sending the informations to the specified Internet server based on TCP/UDP protocal.PC monitoring software was developed by VS2008and QT4jointly.It loads the SQL database,reads informations from Inter-net server,displays and saves them.At the same time,it calls Google Maps according to the latitude and longitude information from GPS, shows bus location intuitively.And users can also call database to view the data record.Validated by many experiments,the system run stably and has accurate positioning,that the measuring accuracy of the number of passengers up to 99%.%设计一种基于 GPS/GPRS的客车远程监控系统,能够远程监控客车实载人数、速度、位置等信息,有效地提高了客车、特别是校车的行驶安全;系统由车载终端和上位机监控两部分组成;车载终端运用 STM32F103单片机采集处理 GPS经纬度、车载人数、速度、紧急报警等信息,并由 GPRS芯片SIM908根据 TCP/UDP协议发送到指定的Internet网络服务器;上位机监控软件由 VS2008和QT4联合开发而成,并加载 SQL 数据库,能够实现读取Internet服务器信息并显示和保存,同时根据读取的 GPS 经纬度信息调用google地图,直观地显示客车位置,用户还可以调用数据库查看数据历史记录;经过多次实验,系统运行稳定,定位准确,测量人数准确度达到99%。

  13. Development and Evaluation of Sensor Concepts for Ageless Aerospace Vehicles: Report 6 - Development and Demonstration of a Self-Organizing Diagnostic System for Structural Health Monitoring

    Science.gov (United States)

    Batten, Adam; Edwards, Graeme; Gerasimov, Vadim; Hoschke, Nigel; Isaacs, Peter; Lewis, Chris; Moore, Richard; Oppolzer, Florien; Price, Don; Prokopenko, Mikhail; Scott, Andrew; Wang, Peter

    2010-01-01

    This report describes a significant advance in the capability of the CSIRO/NASA structural health monitoring Concept Demonstrator (CD). The main thrust of the work has been the development of a mobile robotic agent, and the hardware and software modifications and developments required to enable the demonstrator to operate as a single, self-organizing, multi-agent system. This single-robot system is seen as the forerunner of a system in which larger numbers of small robots perform inspection and repair tasks cooperatively, by self-organization. While the goal of demonstrating self-organized damage diagnosis was not fully achieved in the time available, much of the work required for the final element that enables the robot to point the video camera and transmit an image has been completed. A demonstration video of the CD and robotic systems operating will be made and forwarded to NASA.

  14. HUMAN-SIMULATING VEHICLE STEERING CONTROL ALGORITHM

    Institute of Scientific and Technical Information of China (English)

    XU Youchun; LI Keqiang; CHANG Ming; CHEN Jun

    2006-01-01

    A new vehicle steering control algorithm is presented. Unlike the traditional methods do,the algorithm uses a sigmoid function to describe the principle of the human driver's steering strategy.Based on this function, a human simulating vehicle steering model, human-simulating steering control(HS) algorithm is designed. In order to improve the adaptability to different environments, a parameter adaptive adjustment algorithm is presented. This algorithm can online modify the value of the key parameters of the HS real time. HS controller is used on a vehicle equipped with computer vision system and computer controlled steering actuator system, the result from the automatic vehicle steering experiment shows that the HS algorithm gives good performance at different speed, even at the maximum speed of 172 km/h.

  15. Semi-automatic knee cartilage segmentation

    Science.gov (United States)

    Dam, Erik B.; Folkesson, Jenny; Pettersen, Paola C.; Christiansen, Claus

    2006-03-01

    Osteo-Arthritis (OA) is a very common age-related cause of pain and reduced range of motion. A central effect of OA is wear-down of the articular cartilage that otherwise ensures smooth joint motion. Quantification of the cartilage breakdown is central in monitoring disease progression and therefore cartilage segmentation is required. Recent advances allow automatic cartilage segmentation with high accuracy in most cases. However, the automatic methods still fail in some problematic cases. For clinical studies, even if a few failing cases will be averaged out in the overall results, this reduces the mean accuracy and precision and thereby necessitates larger/longer studies. Since the severe OA cases are often most problematic for the automatic methods, there is even a risk that the quantification will introduce a bias in the results. Therefore, interactive inspection and correction of these problematic cases is desirable. For diagnosis on individuals, this is even more crucial since the diagnosis will otherwise simply fail. We introduce and evaluate a semi-automatic cartilage segmentation method combining an automatic pre-segmentation with an interactive step that allows inspection and correction. The automatic step consists of voxel classification based on supervised learning. The interactive step combines a watershed transformation of the original scan with the posterior probability map from the classification step at sub-voxel precision. We evaluate the method for the task of segmenting the tibial cartilage sheet from low-field magnetic resonance imaging (MRI) of knees. The evaluation shows that the combined method allows accurate and highly reproducible correction of the segmentation of even the worst cases in approximately ten minutes of interaction.

  16. Automatic Complexity Analysis

    DEFF Research Database (Denmark)

    Rosendahl, Mads

    1989-01-01

    One way to analyse programs is to to derive expressions for their computational behaviour. A time bound function (or worst-case complexity) gives an upper bound for the computation time as a function of the size of input. We describe a system to derive such time bounds automatically using abstract...

  17. Exploring Automatization Processes.

    Science.gov (United States)

    DeKeyser, Robert M.

    1996-01-01

    Presents the rationale for and the results of a pilot study attempting to document in detail how automatization takes place as the result of different kinds of intensive practice. Results show that reaction times and error rates gradually decline with practice, and the practice effect is skill-specific. (36 references) (CK)

  18. Automatic Classification of Marine Mammals with Speaker Classification Methods.

    Science.gov (United States)

    Kreimeyer, Roman; Ludwig, Stefan

    2016-01-01

    We present an automatic acoustic classifier for marine mammals based on human speaker classification methods as an element of a passive acoustic monitoring (PAM) tool. This work is part of the Protection of Marine Mammals (PoMM) project under the framework of the European Defense Agency (EDA) and joined by the Research Department for Underwater Acoustics and Geophysics (FWG), Bundeswehr Technical Centre (WTD 71) and Kiel University. The automatic classification should support sonar operators in the risk mitigation process before and during sonar exercises with a reliable automatic classification result.

  19. Emergency vehicle traffic signal preemption system

    Science.gov (United States)

    Bachelder, Aaron D. (Inventor); Foster, Conrad F. (Inventor)

    2011-01-01

    An emergency vehicle traffic light preemption system for preemption of traffic lights at an intersection to allow safe passage of emergency vehicles. The system includes a real-time status monitor of an intersection which is relayed to a control module for transmission to emergency vehicles as well as to a central dispatch office. The system also provides for audio warnings at an intersection to protect pedestrians who may not be in a position to see visual warnings or for various reasons cannot hear the approach of emergency vehicles. A transponder mounted on an emergency vehicle provides autonomous control so the vehicle operator can attend to getting to an emergency and not be concerned with the operation of the system. Activation of a priority-code (i.e. Code-3) situation provides communications with each intersection being approached by an emergency vehicle and indicates whether the intersection is preempted or if there is any conflict with other approaching emergency vehicles. On-board diagnostics handle various information including heading, speed, and acceleration sent to a control module which is transmitted to an intersection and which also simultaneously receives information regarding the status of an intersection. Real-time communications and operations software allow central and remote monitoring, logging, and command of intersections and vehicles.

  20. 基于车联网的3G远程车载尾气监测系统的设计与实现%Design and implementation of 3 G remote vehicle exhaust monitoring system based on IOV

    Institute of Scientific and Technical Information of China (English)

    马英

    2014-01-01

    Aiming at the problem of the long cycle,complex manipulation,and low accuracy of the tradition-al automobile exhaust detection method,3G remote vehicle exhaust detection system based on IOV was pro-posed.In order to obtain a signal value corresponding to the electrode-gas concentration,electrochemical sensors were introduced for a chemical reaction with the exhaust gas;CAN bus was used for the real-time acquisition of the electrical signal of the sensor node to calculate the corresponding gas concentration through the control software;the 3 G remote communication system was designed to detect the vehicle ex-haust concentration within certain area,which could provide effective reference data for prevention and con-trol of air pollution.The result showed that the system improved the inteligent,real-time and accuracy of the traditional monitoring,and solved the development bottleneck of traditional exhaust gas monitoring system.%针对汽车尾气传统检测方法周期长、操控繁杂、精确度低的问题,构建了基于车联网的3G远程车载尾气监测系统。该系统引入电化学传感器与尾气进行化学反应,以获取相应气体浓度的电极信号值;采用CAN总线实时采集传感器节点的电信号值,进而通过中控软件计算相应气体浓度值;设计3G远程通信系统实时监测区域内相关车辆的尾气浓度值,为大气污染的防控提供有效参考数据。实验结果表明,该系统提升了传统监测系统的智能性、实时性和精确性,解决了传统尾气监测系统发展的瓶颈问题。

  1. Automaticity and Reading: Perspectives from the Instance Theory of Automatization.

    Science.gov (United States)

    Logan, Gordon D.

    1997-01-01

    Reviews recent literature on automaticity, defining the criteria that distinguish automatic processing from non-automatic processing, and describing modern theories of the underlying mechanisms. Focuses on evidence from studies of reading and draws implications from theory and data for practical issues in teaching reading. Suggests that…

  2. Vision-Based Leader Vehicle Trajectory Tracking for Multiple Agricultural Vehicles.

    Science.gov (United States)

    Zhang, Linhuan; Ahamed, Tofael; Zhang, Yan; Gao, Pengbo; Takigawa, Tomohiro

    2016-04-22

    The aim of this study was to design a navigation system composed of a human-controlled leader vehicle and a follower vehicle. The follower vehicle automatically tracks the leader vehicle. With such a system, a human driver can control two vehicles efficiently in agricultural operations. The tracking system was developed for the leader and the follower vehicle, and control of the follower was performed using a camera vision system. A stable and accurate monocular vision-based sensing system was designed, consisting of a camera and rectangular markers. Noise in the data acquisition was reduced by using the least-squares method. A feedback control algorithm was used to allow the follower vehicle to track the trajectory of the leader vehicle. A proportional-integral-derivative (PID) controller was introduced to maintain the required distance between the leader and the follower vehicle. Field experiments were conducted to evaluate the sensing and tracking performances of the leader-follower system while the leader vehicle was driven at an average speed of 0.3 m/s. In the case of linear trajectory tracking, the RMS errors were 6.5 cm, 8.9 cm and 16.4 cm for straight, turning and zigzag paths, respectively. Again, for parallel trajectory tracking, the root mean square (RMS) errors were found to be 7.1 cm, 14.6 cm and 14.0 cm for straight, turning and zigzag paths, respectively. The navigation performances indicated that the autonomous follower vehicle was able to follow the leader vehicle, and the tracking accuracy was found to be satisfactory. Therefore, the developed leader-follower system can be implemented for the harvesting of grains, using a combine as the leader and an unloader as the autonomous follower vehicle.

  3. Automatic land vehicle navigation using road map data

    Energy Technology Data Exchange (ETDEWEB)

    Schindwolf, R.

    1984-06-01

    A land navigation system has been developed that provides accurate navigation data while it is traveling on mapped roads. The system is autonomous and consists of a simple dead-reckoning navigator that is updated with stored road map data. Simulation and preliminary test results indicate that accuracies on the order of 50 feet can be achieved. Accuracy is independent of time.

  4. Vision-based Vehicle Detection Survey

    Directory of Open Access Journals (Sweden)

    Alex David S

    2016-03-01

    Full Text Available Nowadays thousands of drivers and passengers were losing their lives every year on road accident, due to deadly crashes between more than one vehicle. There are number of many research focuses were dedicated to the development of intellectual driver assistance systems and autonomous vehicles over the past decade, which reduces the danger by monitoring the on-road environment. In particular, researchers attracted towards the on-road detection of vehicles in recent years. Different parameters have been analyzed in this paper which includes camera placement and the various applications of monocular vehicle detection, common features and common classification methods, motion- based approaches and nighttime vehicle detection and monocular pose estimation. Previous works on the vehicle detection listed based on camera poisons, feature based detection and motion based detection works and night time detection.

  5. Ride Dynamics of a Tracked Vehicle with a Finite Element Vehicle Model

    Directory of Open Access Journals (Sweden)

    S. Jothi

    2016-01-01

    Full Text Available Research on tracked vehicle dynamics is by and large limited to multi-rigid body simulation. For realistic prediction of vehicle dynamics, it is better to model the vehicle as multi-flexible body. In this paper, tracked vehicle is modelled as a mass-spring system with sprung and unsprung masses of the physical tracked vehicle by Finite element method. Using the equivalent vehicle model, dynamic studies are carried out by imparting vertical displacement inputs to the road wheels. Ride characteristics of the vehicle are captured by modelling the road wheel arms as flexible elements using Finite element method. In this work, a typical tracked vehicle test terrain viz., Trapezoidal blocks terrain (APG terrain is considered. Through the simulations, the effect of the road wheel arm flexibility is monitored. Result of the analysis of equivalent vehicle model with flexible road wheel arms, is compared with the equivalent vehicle model with rigid road wheel arms and also with the experimental results of physical tracked vehicle. Though there is no major difference in the vertical bounce response between the flexible model and the rigid model, but there is a visible difference in the roll condition. Result of the flexible vehicle model is also reasonably matches with the experimental result.Defence Science Journal, Vol. 66, No. 1, January 2016, pp. 19-25, DOI: http://dx.doi.org/10.14429/dsj.66.9201

  6. Nonlinear guided wave circular array system for microcrack monitoring in spacecraft Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Reliable monitoring of the microcrack formation in the complex composite structure components in NASA spacecraft and launch vehicles is critical for vehicle...

  7. 3D laser methods for calibrating and localising robotic vehicles

    OpenAIRE

    Mark Sheehan

    2013-01-01

    This thesis is about the construction and automatic target-less calibration of a 3D laser sensor; this is then used to localise an autonomous vehicle without using other sensors. Two novel contributions to our knowledge of robotics are presented here. The first is an automatic calibration routine, which is capable of learning its calibration parameters using only data from a 3D laser scanner. Targets with known dimensions are not required, as has previously been the case. The second main ...

  8. Revolutionizing Technology Prioritizing Emergency Vehicles in Traffic

    Directory of Open Access Journals (Sweden)

    B. Ramya Sundaram

    2014-08-01

    Full Text Available The following study brings to the fore a technology exclusively engineered to eradicate the snags and inadequacies persisting in the existing system of traffic control and thus aims to provide a sophisticated operation and uninterrupted course for the emergency vehicles. The traffic in Indian roads has shown a tremendous rise over the years and the conventional pre-timed traffic signals and frequent traffic congestions, delaying the road commuters, have led to outrage and chaos on several occasions. This traffic management system has proved a nuisance for the effective operation of emergency vehicles, with the public adding to the woes, as each driver races along with the signal, unmindful of the emergency vehicles. A life threatening scenario ensues when emergency vehicles get blocked by the traffic, due to inefficient traffic management system and subsequently these emergency vehicles get delayed. The existing system requires manual interruption to guide other vehicles when an emergency vehicle passes through traffic junctions. It is therefore essential to implement a self-regulating and automated system in the traffic signals to facilitate smooth movement of emergency vehicles without posing a danger to other vehicles. The innovative traffic control system devised by us provides a truly dependable alternative to monitoring traffic flow when emergency vehicles pass by.

  9. Automaticity or active control

    DEFF Research Database (Denmark)

    Tudoran, Ana Alina; Olsen, Svein Ottar

    aspects of the construct, such as routine, inertia, automaticity, or very little conscious deliberation. The data consist of 2962 consumers participating in a large European survey. The results show that habit strength significantly moderates the association between satisfaction and action loyalty, and......This study addresses the quasi-moderating role of habit strength in explaining action loyalty. A model of loyalty behaviour is proposed that extends the traditional satisfaction–intention–action loyalty network. Habit strength is conceptualised as a cognitive construct to refer to the psychological......, respectively, between intended loyalty and action loyalty. At high levels of habit strength, consumers are more likely to free up cognitive resources and incline the balance from controlled to routine and automatic-like responses....

  10. Automatic Ultrasound Scanning

    DEFF Research Database (Denmark)

    Moshavegh, Ramin

    Medical ultrasound has been a widely used imaging modality in healthcare platforms for examination, diagnostic purposes, and for real-time guidance during surgery. However, despite the recent advances, medical ultrasound remains the most operator-dependent imaging modality, as it heavily relies...... on the user adjustments on the scanner interface to optimize the scan settings. This explains the huge interest in the subject of this PhD project entitled “AUTOMATIC ULTRASOUND SCANNING”. The key goals of the project have been to develop automated techniques to minimize the unnecessary settings...... on the scanners, and to improve the computer-aided diagnosis (CAD) in ultrasound by introducing new quantitative measures. Thus, four major issues concerning automation of the medical ultrasound are addressed in this PhD project. They touch upon gain adjustments in ultrasound, automatic synthetic aperture image...

  11. Automatic trend estimation

    CERN Document Server

    Vamos¸, C˘alin

    2013-01-01

    Our book introduces a method to evaluate the accuracy of trend estimation algorithms under conditions similar to those encountered in real time series processing. This method is based on Monte Carlo experiments with artificial time series numerically generated by an original algorithm. The second part of the book contains several automatic algorithms for trend estimation and time series partitioning. The source codes of the computer programs implementing these original automatic algorithms are given in the appendix and will be freely available on the web. The book contains clear statement of the conditions and the approximations under which the algorithms work, as well as the proper interpretation of their results. We illustrate the functioning of the analyzed algorithms by processing time series from astrophysics, finance, biophysics, and paleoclimatology. The numerical experiment method extensively used in our book is already in common use in computational and statistical physics.

  12. Topological characterization of safe coordinated vehicle motions

    Energy Technology Data Exchange (ETDEWEB)

    MILGRAM.R. JAMES; KAUFMAN,STEPHEN G.

    2000-04-03

    This paper characterizes the homotopy properties and the global topology of the space of positions of vehicles which are constrained to travel without intersecting on a network of paths. The space is determined by the number of vehicles and the network. Paths in the space correspond to simultaneous non-intersecting motions of all vehicles. The authors therefore focus on computing the homotopy type of the space, and show how to do so in the general case. Understanding the homotopy type of the space is the central issue in controlling the vehicles, as it gives a complete description of the distinct ways that vehicles may move safely on the network. The authors exhibit graphs, products of graphs, and amalgamations of products of graphs that are homotopy equivalent to the full configuration space, and are far simpler than might be expected. The results indicate how a control system for such a network of vehicles (such as a fleet of automatically guided vehicles guided by wires buried in a factory floor) may be implemented.

  13. Image-based Vehicle Classification System

    CERN Document Server

    Ng, Jun Yee

    2012-01-01

    Electronic toll collection (ETC) system has been a common trend used for toll collection on toll road nowadays. The implementation of electronic toll collection allows vehicles to travel at low or full speed during the toll payment, which help to avoid the traffic delay at toll road. One of the major components of an electronic toll collection is the automatic vehicle detection and classification (AVDC) system which is important to classify the vehicle so that the toll is charged according to the vehicle classes. Vision-based vehicle classification system is one type of vehicle classification system which adopt camera as the input sensing device for the system. This type of system has advantage over the rest for it is cost efficient as low cost camera is used. The implementation of vision-based vehicle classification system requires lower initial investment cost and very suitable for the toll collection trend migration in Malaysia from single ETC system to full-scale multi-lane free flow (MLFF). This project ...

  14. 新形势下江苏省地表水自动监测站运行管理模式对策建议%Suggestions and Counter Measures of Management Modes of Automatic Monitoring Sta-tions for Surface Water in Jiangsu Province in the New Situation

    Institute of Scientific and Technical Information of China (English)

    徐亮; 钟声; 曹军; 郭蓉; 魏宏农; 汪晓燕

    2015-01-01

    This paper analyzed the development process and current status of operation and management models of automatic monito-ring stations for surface water in Jiangsu Province, as well as needs and the problems during the operation and management.The ad-vantages and disadvantages of the operation and management models in other areas of the nation were analyzed.It was proposed to decentralize the management authority for part of the stations in order to achieve authority and responsibility equitably.It was also suggested to start social quality control management in pilot stations for the sake of strengthening provincial monitoring and manage-ment capability, and in addition, to further improve the construction of the system in order to raise the management level.Finally, it was proposed to explore novel management models in order to improve the efficiency of automatic monitoring and management.%简述了江苏省地表水自动监测站运行管理模式发展历程和现状,以及运行管理需求和存在的问题。分析了国内其他地区地表水自动监测站运行管理模式的优缺点。提出,下放部分站点管理权限,实现权责相对统一;试点社会化质控管理,强化省级监督管理能力;进一步完善制度建设,提高水站管理水平;探索新型管理模式,提高自动监测管理效能。

  15. Automatic food decisions

    DEFF Research Database (Denmark)

    Mueller Loose, Simone

    Consumers' food decisions are to a large extent shaped by automatic processes, which are either internally directed through learned habits and routines or externally influenced by context factors and visual information triggers. Innovative research methods such as eye tracking, choice experiments...... and food diaries allow us to better understand the impact of unconscious processes on consumers' food choices. Simone Mueller Loose will provide an overview of recent research insights into the effects of habit and context on consumers' food choices....

  16. Automatization of lexicographic work

    Directory of Open Access Journals (Sweden)

    Iztok Kosem

    2013-12-01

    Full Text Available A new approach to lexicographic work, in which the lexicographer is seen more as a validator of the choices made by computer, was recently envisaged by Rundell and Kilgarriff (2011. In this paper, we describe an experiment using such an approach during the creation of Slovene Lexical Database (Gantar, Krek, 2011. The corpus data, i.e. grammatical relations, collocations, examples, and grammatical labels, were automatically extracted from 1,18-billion-word Gigafida corpus of Slovene. The evaluation of the extracted data consisted of making a comparison between the time spent writing a manual entry and a (semi-automatic entry, and identifying potential improvements in the extraction algorithm and in the presentation of data. An important finding was that the automatic approach was far more effective than the manual approach, without any significant loss of information. Based on our experience, we would propose a slightly revised version of the approach envisaged by Rundell and Kilgarriff in which the validation of data is left to lower-level linguists or crowd-sourcing, whereas high-level tasks such as meaning description remain the domain of lexicographers. Such an approach indeed reduces the scope of lexicographer’s work, however it also results in the ability of bringing the content to the users more quickly.

  17. Traffic Monitor

    Science.gov (United States)

    1992-01-01

    Mestech's X-15 "Eye in the Sky," a traffic monitoring system, incorporates NASA imaging and robotic vision technology. A camera or "sensor box" is mounted in a housing. The sensor detects vehicles approaching an intersection and sends the information to a computer, which controls the traffic light according to the traffic rate. Jet Propulsion Laboratory technical support packages aided in the company's development of the system. The X-15's "smart highway" can also be used to count vehicles on a highway and compute the number in each lane and their speeds, important information for freeway control engineers. Additional applications are in airport and railroad operations. The system is intended to replace loop-type traffic detectors.

  18. 自动跟踪式独立光伏发电计算机监控系统设计%Design of automatic tracking stand-alone photovoltaic generation computer monitoring system

    Institute of Scientific and Technical Information of China (English)

    安伦; 郭献崇; 谢芳

    2013-01-01

    Compared with the fixed solar power installations, the energy receiving rate of tracking solar power installations can be increased by 35%. Therefore, it is significant to research the sun automatic tracking system. The principle of solar tracker was studied, and the ray tracing the statistical elevation and azimuth was adopted to control the sun automatic tracking. Combined with computer technology, the sun position detection, data processing of photoelectric detection and drive control of tracking device were realized.%跟踪式太阳能发电装置的能量接收率比固定式的可提高35%.因此,研制技术经济性能良好的太阳自动跟踪系统具有积极的生产实践意义.在研究太阳能跟踪器原理的基础上,采用光线跟踪和按方位角控制调节太阳自动跟踪方法,并结合计算机技术,实现了对太阳方位检测、光强检测的数据处理及跟踪机构的驱动控制.

  19. 雷达监测在海南自动站降水质控中的应用方法初探%Preliminary Study on the Application of Radar Monitoring in the Precipitation Control of Automatic Station in Hainan

    Institute of Scientific and Technical Information of China (English)

    朱文婷; 姜小云; 吴俞

    2015-01-01

    In this paper, the ratio of the precipitation data and the precipitation data observed by the Haikou radar quantitative estimation of precipitation and the ratio of the precipitation data from Hainan Island automatic station is constructed, and the conversion coefficient is found to obey the normal distribution. This paper to the conversion coefficient of multiple standards poor quality space for the credibility of the test observations of precipitation, the results show that radar quantitative estimate precipitation on actual observations of precipitation of automatic weather station has good control effect, and is especially suitable for the heavy rainfall in the tropics local quality inspection.%利用海口雷达定量估测降水的格点数据与海南岛自动站实际观测到的降水数据的比值构建了折算系数,发现其折算系数服从正态分布.以折算系数的多倍标准差质控空间为检验实况观测降水的可信程度,结果表明,雷达定量估测降水对自动站实际观测降水有良好的质控效果,尤其适用于热带地区局地强降水的质量检验.

  20. Automatic Design of a Maglev Controller in State Space

    Science.gov (United States)

    1991-12-01

    conventional trains with steel wheels on steel rails. Several experimen- tal maglev systems in Germany and Japan have demonstrated that this mode of...Design of a Maglev Controller in State Space Feng Zhao Richard Thornton Abstract We describe the automatic synthesis of a global nonlinear controller for...the global switching points of the controller is presented. The synthesized control system can stabilize the maglev vehicle with large initial displace