WorldWideScience

Sample records for acquisition system based

  1. Microprocessor-Based Laboratory Data Acquisition Systems.

    Science.gov (United States)

    Woodard, F. E.; And Others

    1981-01-01

    Focuses on attributes of microcomputer systems which affect their usefulness in a laboratory environment. In addition to presenting general concepts, comments are made regarding the implementation of these concepts using a microprocessor-based data acquisition system developed at the University of North Carolina. (CO)

  2. Optoelectronic date acquisition system based on FPGA

    Science.gov (United States)

    Li, Xin; Liu, Chunyang; Song, De; Tong, Zhiguo; Liu, Xiangqing

    2015-11-01

    An optoelectronic date acquisition system is designed based on FPGA. FPGA chip that is EP1C3T144C8 of Cyclone devices from Altera corporation is used as the centre of logic control, XTP2046 chip is used as A/D converter, host computer that communicates with the date acquisition system through RS-232 serial communication interface are used as display device and photo resistance is used as photo sensor. We use Verilog HDL to write logic control code about FPGA. It is proved that timing sequence is correct through the simulation of ModelSim. Test results indicate that this system meets the design requirement, has fast response and stable operation by actual hardware circuit test.

  3. WMN-based city traffic information acquisition system

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Traffic information acquisition system is an essential part of the intelligent transportation system (ITS). This paper presents a novel traffic information acquisition system, i.e., a dynamic traffic information acquisition system based on wireless mesh networks (WMN). The system comprises of probe vehicles and wireless mesh networks. Compared to the conventional systems, it is independent of other network infrastructures and easy to implement. It can acquire the real-time traffic information correctly with lower cost.

  4. ARM Processor Based Embedded System for Remote Data Acquisition

    Directory of Open Access Journals (Sweden)

    Raj Kumar Tiwari

    2014-01-01

    Full Text Available The embedded systems are widely used for the data acquisition. The data acquired may be used for monitoring various activity of the system or it can be used to control the parts of the system. Accessing various signals with remote location has greater advantage for multisite operation or unmanned systems. The remote data acquisition used in this paper is based on ARM processor. The Cortex M3 processor used in this system has in-built Ethernet controller which facilitate to acquire the remote data using internet. The system developed provides high performance, low power consumption, smaller size {&} high speed

  5. Harpoon-based sample Acquisition System

    Science.gov (United States)

    Bernal, Javier; Nuth, Joseph; Wegel, Donald

    2012-02-01

    Acquiring information about the composition of comets, asteroids, and other near Earth objects is very important because they may contain the primordial ooze of the solar system and the origins of life on Earth. Sending a spacecraft is the obvious answer, but once it gets there it needs to collect and analyze samples. Conceptually, a drill or a shovel would work, but both require something extra to anchor it to the comet, adding to the cost and complexity of the spacecraft. Since comets and asteroids are very low gravity objects, drilling becomes a problem. If you do not provide a grappling mechanism, the drill would push the spacecraft off the surface. Harpoons have been proposed as grappling mechanisms in the past and are currently flying on missions such as ROSETTA. We propose to use a hollow, core sampling harpoon, to act as the anchoring mechanism as well as the sample collecting device. By combining these two functions, mass is reduced, more samples can be collected and the spacecraft can carry more propellant. Although challenging, returning the collected samples to Earth allows them to be analyzed in laboratories with much greater detail than possible on a spacecraft. Also, bringing the samples back to Earth allows future generations to study them.

  6. How Cisco Systems Used Enterprise Architecture Capability to Sustain Acquisition-Based Growth

    DEFF Research Database (Denmark)

    Toppenberg, Gustav; Shanks, Graeme; Henningsson, Stefan

    2015-01-01

    Value-creating acquisitions are a major challenge for many firms. The case of Cisco Systems shows that an advanced enterprise architecture (EA) capability can contribute to the four phases of the acquisition process: pre-acquisition preparation, acquisition selection, acquisition integration and ...... and post-integration management. Cisco’s EA capability improves its ability to rapidly capture value from acquisitions and to sustain its acquisition-based growth strategy over time....

  7. Simulation Based Acquisition for NASA's Office of Exploration Systems

    Science.gov (United States)

    Hale, Joe

    2004-01-01

    In January 2004, President George W. Bush unveiled his vision for NASA to advance U.S. scientific, security, and economic interests through a robust space exploration program. This vision includes the goal to extend human presence across the solar system, starting with a human return to the Moon no later than 2020, in preparation for human exploration of Mars and other destinations. In response to this vision, NASA has created the Office of Exploration Systems (OExS) to develop the innovative technologies, knowledge, and infrastructures to explore and support decisions about human exploration destinations, including the development of a new Crew Exploration Vehicle (CEV). Within the OExS organization, NASA is implementing Simulation Based Acquisition (SBA), a robust Modeling & Simulation (M&S) environment integrated across all acquisition phases and programs/teams, to make the realization of the President s vision more certain. Executed properly, SBA will foster better informed, timelier, and more defensible decisions throughout the acquisition life cycle. By doing so, SBA will improve the quality of NASA systems and speed their development, at less cost and risk than would otherwise be the case. SBA is a comprehensive, Enterprise-wide endeavor that necessitates an evolved culture, a revised spiral acquisition process, and an infrastructure of advanced Information Technology (IT) capabilities. SBA encompasses all project phases (from requirements analysis and concept formulation through design, manufacture, training, and operations), professional disciplines, and activities that can benefit from employing SBA capabilities. SBA capabilities include: developing and assessing system concepts and designs; planning manufacturing, assembly, transport, and launch; training crews, maintainers, launch personnel, and controllers; planning and monitoring missions; responding to emergencies by evaluating effects and exploring solutions; and communicating across the OEx

  8. Data acquisition instrument for EEG based on embedded system

    Science.gov (United States)

    Toresano, La Ode Husein Z.; Wijaya, Sastra Kusuma; Prawito, Sudarmaji, Arief; Syakura, Abdan; Badri, Cholid

    2017-02-01

    An electroencephalogram (EEG) is a device for measuring and recording the electrical activity of brain. The EEG data of signal can be used as a source of analysis for human brain function. The purpose of this study was to design a portable multichannel EEG based on embedded system and ADS1299. The ADS1299 is an analog front-end to be used as an Analog to Digital Converter (ADC) to convert analog signal of electrical activity of brain, a filter of electrical signal to reduce the noise on low-frequency band and a data communication to the microcontroller. The system has been tested to capture brain signal within a range of 1-20 Hz using the NETECH EEG simulator 330. The developed system was relatively high accuracy of more than 82.5%. The EEG Instrument has been successfully implemented to acquire the brain signal activity using a PC (Personal Computer) connection for displaying the recorded data. The final result of data acquisition has been processed using OpenBCI GUI (Graphical User Interface) based through real-time process for 8-channel signal acquisition, brain-mapping and power spectral decomposition signal using the standard FFT (Fast Fourier Transform) algorithm.

  9. A Prototype Knowledge-Based System for Developing Acquisition Strategies.

    Science.gov (United States)

    1988-03-01

    2 or 3 hours of continued knowledge acquisition. (Hall and -S Bandler , 1985:509-510; Tanimoto, 1987:286) Although the knowledge engineer should guide...Department of Research and Information, 1 January 1987. 13. Hall, Lawrence 0. and Wyllis Bandler . "Relational Knowledge Acqui- sition," IEEE Second...Corporation. Acquisition Expert System (AES) Tutorial. Washington, DC: Navy Materiel Command, April 1985. 34. Walters, Richard C. "KBEmacs: Where’s the AI

  10. Space Acquisitions: Space Based Infrared System Could Benefit from Technology Insertion Planning

    Science.gov (United States)

    2015-04-01

    Space Based Infrared System (SBIRS) Constellation with Defense Support Program (DSP) Augmentation (Nominal) 5 Figure 3: Key Space Based Infrared...5 GAO-15-366 Space Acquisitions Figure 2: Space Based Infrared System (SBIRS) Constellation with Defense Support Program (DSP) Augmentation...SPACE ACQUISITIONS Space Based Infrared System Could Benefit from Technology Insertion Planning Report to the

  11. Design of extensible meteorological data acquisition system based on FPGA

    Science.gov (United States)

    Zhang, Wen; Liu, Yin-hua; Zhang, Hui-jun; Li, Xiao-hui

    2015-02-01

    In order to compensate the tropospheric refraction error generated in the process of satellite navigation and positioning. Temperature, humidity and air pressure had to be used in concerned models to calculate the value of this error. While FPGA XC6SLX16 was used as the core processor, the integrated silicon pressure sensor MPX4115A and digital temperature-humidity sensor SHT75 are used as the basic meteorological parameter detection devices. The core processer was used to control the real-time sampling of ADC AD7608 and to acquire the serial output data of SHT75. The data was stored in the BRAM of XC6SLX16 and used to generate standard meteorological parameters in NEMA format. The whole design was based on Altium hardware platform and ISE software platform. The system was described in the VHDL language and schematic diagram to realize the correct detection of temperature, humidity, air pressure. The 8-channel synchronous sampling characteristics of AD7608 and programmable external resources of FPGA laid the foundation for the increasing of analog or digital meteorological element signal. The designed meteorological data acquisition system featured low cost, high performance, multiple expansions.

  12. A Multi-parameter Data Acquisition and Analysis System Based on Open VMS Operation System

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    We fall into disuse the JUHU system based on the PDP/11 computer for RSX11M operation system,and update our multi-parameter data aequisition and analysis system’s hardware and software based on VAXII computer and Open VMS operation system,make it adapted to the recent physics experiment.In this paper,we describe the updated inulti-parameter data acquisition and analysis system’s hardware,software configuration and system function.

  13. FPGA-based data acquisition system for a Compton camera

    Science.gov (United States)

    Nurdan, K.; Çonka-Nurdan, T.; Besch, H. J.; Freisleben, B.; Pavel, N. A.; Walenta, A. H.

    2003-09-01

    A data acquisition (DAQ) system with custom back-plane and custom readout boards has been developed for a Compton camera prototype. The DAQ system consists of two layers. The first layer has units for parallel high-speed analog-to-digital conversion and online data pre-processing. The second layer has a central board to form a general event trigger and to build the data structure for the event. This modularity and the use of field programmable gate arrays make the whole DAQ system highly flexible and adaptable to modified experimental setups. The design specifications, the general architecture of the Trigger and DAQ system and the implemented readout protocols are presented in this paper.

  14. Calo trigger acquisition system

    CERN Multimedia

    Franchini, Matteo

    2016-01-01

    Calo trigger acquisition system - Evolution of the acquisition system from a multiple boards system (upper, orange cables) to a single board one (below, light blue cables) where all the channels are collected in a single board.

  15. VME-based data acquisition system for the India-based Neutrino Observatory prototype detector

    Energy Technology Data Exchange (ETDEWEB)

    Bhuyan, M. [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India); Chandratre, V.B. [Electronics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Dasgupta, S. [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India); Datar, V.M. [Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Kalmani, S.D.; Lahamge, S.M.; Mondal, N.K.; Nagaraj, P.; Pal, S.; Rao, S.K.; Redij, A. [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India); Samuel, D., E-mail: samuel@tifr.res.in [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India); Saraf, M.N.; Satyanarayana, B.; Shinde, R.R.; Upadhya, S.S. [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India)

    2012-01-01

    The India-based Neutrino Observatory (INO) collaboration has proposed to build a 50 kton Iron-Calorimeter (ICAL) to study neutrino oscillations. About 28,800 Resistive Plate Chambers will be used as active detector elements in this experiment. Preliminary studies are currently underway and as a part of it, a prototype detector was developed which now serves as a cosmic-ray telescope and as a test-bench to study the indigenously built RPCs. A VME-based data acquisition system was designed for this prototype system. Modern software tools were used in the designing of the DAQ software. The design and development of this DAQ system are discussed.

  16. PN code acquisition algorithm in DS-UWB system based on threshold comparison criterion

    Institute of Scientific and Technical Information of China (English)

    Qi Lina; Gan Zongliang; Zhu Hongbo

    2009-01-01

    The direct sequence ultra-wideband (DS-UWB) is a promising technology for short-range wireless communications. The UWB signal is a stream of very low power density and ultra-short pulses, and the great potential of DS-UWB depends critically on the success of timing acquisition. A rapid acquisition algorithm for reducing the acquisition time of the coarse pseudo-noise (PN) sequences is proposed. The algorithm utilizes the auxiliary sequence and biscarch strategy based on the threshold comparison criterion. Both theoretical analysis and simulation tests show that with the proposed search strategy and simple operations over the symbol duration at the receiver, the proposed algorithm can considerably reduce the acquisition time even as it maintains the PN sequence acquisition probability in the DS-UWB system over the dense multipath environment.

  17. Electronics and data acquisition system for the ICAL prototype detector of India-based neutrino observatory

    Energy Technology Data Exchange (ETDEWEB)

    Behere, A. [Electronics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Bhuyan, M. [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India); Chandratre, V.B. [Electronics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Dasgupta, S., E-mail: sudeshnadasgupta@tifr.res.in [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India); Datar, V.M. [Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Kalmani, S.D.; Lahamge, S.M.; Mondal, N.K. [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India); Mukhopadhyay, P.K. [Electronics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Nagaraj, P.; Nagesh, B.K.; Pal, S.; Rao, Shobha K.; Samuel, D.; Saraf, M.N.; Satyanarayana, B. [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India); Shastrakar, R.S. [Electronics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Shinde, R.R. [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India); Sudheer, K.M. [Electronics Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Upadhya, S.S. [Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai 400005 (India); and others

    2013-02-11

    The India-based Neutrino Observatory (INO) collaboration has proposed to build a 50 kton magnetized Iron Calorimeter (ICAL) detector with the primary goal to study neutrino oscillations, employing Resistive Plate Chambers (RPCs) as active detector elements. A prototype of the ICAL detector has been built in order to develop and characterize the intrinsic sub-systems, like RPCs, gas system, electronics and data acquisition system, etc. This paper describes in detail the readout electronics as well as the VME-based data acquisition system for the prototype detector.

  18. Free-space laser communication system with rapid acquisition based on astronomical telescopes.

    Science.gov (United States)

    Wang, Jianmin; Lv, Junyi; Zhao, Guang; Wang, Gang

    2015-08-10

    The general structure of a free-space optical (FSO) communication system based on astronomical telescopes is proposed. The light path for astronomical observation and for communication can be easily switched. A separate camera is used as a star sensor to determine the pointing direction of the optical terminal's antenna. The new system exhibits rapid acquisition and is widely applicable in various astronomical telescope systems and wavelengths. We present a detailed analysis of the acquisition time, which can be decreased by one order of magnitude compared with traditional optical communication systems. Furthermore, we verify software algorithms and tracking accuracy.

  19. A study of the environmental information acquisition system based on smart phones

    Science.gov (United States)

    Xu, Lingyan; Chen, Feixiang; Ni, Shaoliang; Wang, Ling; Wei, Chao; Gong, Bowen

    2010-08-01

    In this paper, it proposed a new environmental information acquisition system based on smart phones (Smartphone / Pocket PC) which combined with Geographic Information System (GIS), Global Positioning System (GPS), wireless communication technology in allusion to the current actual situation of environmental protection information acquisition in city environmental protection department. System architecture and working principle is analyzed, and it designs the main modules of the software and hardware. In addition, transport protocols and application of the implementation method have been discussed. Experiments show that the environmental information acquisition system has high precision, easy to use, information transfer with high efficiency and reliability. Not only have that, the paper also discusses the effective strategies of network transmission of data encryption and the image transmission rate improvement. In brief, it can effectively enhance the work efficiency of the city environmental protection department when they collect relevant information.

  20. Data-acquisition systems

    Energy Technology Data Exchange (ETDEWEB)

    Cyborski, D.R.; Teh, K.M.

    1995-08-01

    Up to now, DAPHNE, the data-acquisition system developed for ATLAS, was used routinely for experiments at ATLAS and the Dynamitron. More recently, the Division implemented 2 MSU/DAPHNE systems. The MSU/DAPHNE system is a hybrid data-acquisition system which combines the front-end of the Michigan State University (MSU) DA system with the traditional DAPHNE back-end. The MSU front-end is based on commercially available modules. This alleviates the problems encountered with the DAPHNE front-end which is based on custom designed electronics. The first MSU system was obtained for the APEX experiment and was used there successfully. A second MSU front-end, purchased as a backup for the APEX experiment, was installed as a fully-independent second MSU/DAPHNE system with the procurement of a DEC 3000 Alpha host computer, and was used successfully for data-taking in an experiment at ATLAS. Additional hardware for a third system was bought and will be installed. With the availability of 2 MSU/DAPHNE systems in addition to the existing APEX setup, it is planned that the existing DAPHNE front-end will be decommissioned.

  1. Platform attitude data acquisition system

    Digital Repository Service at National Institute of Oceanography (India)

    Afzulpurkar, S.

    A system for automatic acquisition of underwater platform attitude data has been designed, developed and tested in the laboratory. This is a micro controller based system interfacing dual axis inclinometer, high-resolution digital compass...

  2. Presidential Helicopter Acquisition: Program Established Knowledge-Based Business Case and Entered System Development with Plans for Managing Challenges

    Science.gov (United States)

    2015-04-14

    Presidential Helicopter Acquisition: Program Established Knowledge -Based Business Case and Entered System Development with Plans for Managing Challenges...Presidential Helicopter Acquisition: Program Established Knowledge -Based Business Case and Entered System Development with Plans for Managing...progress by establishing a knowledge - based business case for entry into system development that included an approved cost, schedule and performance

  3. A microcomputer based system for current-meter data acquisition

    Science.gov (United States)

    Cheng, R.T.; Gartner, J.W.

    1979-01-01

    The U.S. Geological Survey is conducting current measurements as part of an interdisciplinary study of the San Francisco Bay estuarine system. The current meters used in the study record current speed, direction, temperature, and conductivity in digital codes on magnetic tape cartridges. Upon recovery of the current meters, the data tapes are translated by a tape reader into computer codes for further analyses. Quite often the importance of the data processing phase of a current-measurement program is underestimated and downplayed. In this paper a data-processing system which performs the complete data processing and analyses is described. The system, which is configured around an LSI-11 microcomputer, has been assembled to provide the capabilities of data translation, reduction, and tabulation and graphical display immediately following recovery of current meters. The flexibility inherent in a microcomputer has made it available to perform many other research functions which would normally be done on an institutional computer.

  4. [Design of multi-physiological parameters acquisition and storage system based on zigbee].

    Science.gov (United States)

    Wang, Guojing; Wang, Weidong; Ang, Qing; Sun, Congcong

    2012-03-01

    Based on CC2530 SoC and Micro-SD card, the system consists of three acquisition nodes and a coordinator node. The former three nodes implement data collection and wireless transmission by collecting the data of blood pressure, body temperature and ECG, while the last one fulfills the tasks of fast network organization, data reception and assorted storage.

  5. [Design of a bowel sounds acquisition system based on C8051F340 MCU].

    Science.gov (United States)

    Zhang, He-Hua; Wu, Bao-Ming; Zhuo, Yu; Zhang, Lian-Yang; Wang, Xi-Long

    2008-05-01

    This paper introduces an eight channels dada acquisition system. A peripheral circuit based on C8051F340 MCU has been designed and its USB controller is used to transfer data, which realizes real-time detection, display and storage of bowel sounds. The system has many advantages such as high precision and stable performance, and thus provides a new means for the bowel sounds study.

  6. Research of Data Acquisition and Analysis System for Internal Combustion Engine Based on DSP

    Energy Technology Data Exchange (ETDEWEB)

    Gao, Y H [Center of Test Science of Jilin University, Chang chun, 130022 (China); Tian, X L [College of Instrumentation and Electrical Engineering of Jilin University, Jilin (China); Cheng, P [Center of Test Science of Jilin University, Chang chun, 130022 (China); Chang, X [College of Instrumentation and Electrical Engineering of Jilin University, Jilin (China); Dou, W J [College of Instrumentation and Electrical Engineering of Jilin University, Jilin (China)

    2006-10-15

    In the paper, the structure, working principle, functions and characteristics of an data acquisition and analysis system for internal combustion engines (I.C. engine) based on DSP is introduced. The DSP can not only acquire and analyze the data alone, also can work with the PC together to form data acquisition and analysis system with high speed and large memory. The system takes advantages of TMS320F2812's plenty of peripherals on chip, becomes small and easy for installation. USB technique is used to translate data between DSP and PC in high speed, so the system's real time processing is proved very much. It is proved that the designed system can acquire and analyze the steady and transient parameters of the I.C. engine very well.

  7. Design and Development of FPGA Based Data Acquisition System for Process Automation

    Directory of Open Access Journals (Sweden)

    H.S Murali

    2013-01-01

    Full Text Available This paper presents a novel approach to the design of data acquisition system for process applications. The core heart of the proposed system is Field Programmable Gate Array (FPGA which is configured and programmed to acquire a maximum of 16 MB real time data. For the real time validation of the designed system, a process plant with three parameters i.e. pressure, temperature and level is considered. Real time data from the process is acquired using suitable temperature, pressure and level sensors. Signal conditioners are designed for each sensor and are tested in real time. Designed FPGA based data acquisition system along with corresponding signal conditioners is validated in real-time by running the process and comparing the same with the corresponding references. The data acquired in real time compares well with the references.

  8. Development of small and inexpensive digital data acquisition systems using a microcontroller-based approach.

    Science.gov (United States)

    Naivar, Mark A; Wilder, Mark E; Habbersett, Robert C; Woods, Travis A; Sebba, David S; Nolan, John P; Graves, Steven W

    2009-12-01

    Fully digital data acquisition systems for use in flow cytometry provide excellent flexibility and precision. Here, we demonstrate the development of a low cost, small, and low power digital flow cytometry data acquisition system using a single microcontroller chip with an integrated analog to digital converter (ADC). Our demonstration system uses a commercially available evaluation board making the system simple to integrate into a flow cytometer. We have evaluated this system using calibration microspheres analyzed on commercial, slow-flow, and CCD-based flow cytometers. In our evaluations, our demonstration data system clearly resolves all eight peaks of a Rainbow microsphere set on both a slow-flow flow cytometer and a retrofitted BD FACScalibur, which indicates it has the sensitivity and resolution required for most flow cytometry applications. It is also capable of millisecond time resolution, full waveform collection, and selective triggering of data collection from a CCD camera. The capability of our demonstration system suggests that the use of microcontrollers for flow cytometry digital data-acquisition will be increasingly valuable for extending the life of older cytometers and provides a compelling data-system design approach for low-cost, portable flow cytometers.

  9. On designing a SWIR multi-wavelength facial-based acquisition system

    Science.gov (United States)

    Bourlai, Thirimachos; Narang, Neeru; Cukic, Bojan; Hornak, Lawrence

    2012-06-01

    In harsh environmental conditions characterized by unfavorable lighting and pronounced shadows, human recognition based on Short-Wave Infrared (0.9-1.7 microns) images may be advantageous. SWIR imagery (i) is more tolerant to low levels of obscurants like fog and smoke; (ii) the active illumination source can be eye-safe and (iii) the active illumination source is invisible to the human eye making it suitable for surveillance applications. The key drawback of current SWIR-based acquisition systems is that they lack the capability of real-time simultaneous acquisition of multiple SWIR wavelengths. The contributions of our work are four-fold. First, we constructed a SWIR multi-wavelength acquisition system (MWAS) that can capture face images at 5 different wavelengths (1150, 1250, 1350, 1450, 1550 nm) in rapid succession using a 5-filter rotating filter wheel. Each filter has a band pass of 100 nm and all 5 images are acquired within 260 milliseconds. The acquisition system utilizes a reflective optical sensor to generate a timing signal corresponding to the filter wheel position that is used to trigger each camera image acquisition when the appropriate filter is in front of the camera. The timing signal from the reflective sensor transmits to a display panel to confirm the synchronization of the camera with the wheel. Second, we performed an empirical optimization on the adjustment of the exposure time of the camera and speed of the wheel when different light sources (fluorescent, tungsten, both) were used. This improved the quality of the images acquired. Third, a SWIR spectrometer was used to measure the response from the different light sources and was used to evaluate which one provides better images as a function of wavelength. Finally, the selection of the band pass filter, to focus the camera to acquire the good quality SWIR images was done by using a number of image quality and distortion metrics (e.g. universal quality index and Structural index method).

  10. Data acquisition system based on the Nios II for a CCD camera

    Science.gov (United States)

    Li, Binhua; Hu, Keliang; Wang, Chunrong; Liu, Yangbing; He, Chun

    2006-06-01

    The FPGA with Avalon Bus architecture and Nios soft-core processor developed by Altera Corporation is an advanced embedded solution for control and interface systems. A CCD data acquisition system with an Ethernet terminal port based on the TCP/IP protocol is implemented in NAOC, which is composed of a piece of interface board with an Altera's FPGA, 32MB SDRAM and some other accessory devices integrated on it, and two packages of control software used in the Nios II embedded processor and the remote host PC respectively. The system is used to replace a 7200 series image acquisition card which is inserted in a control and data acquisition PC, and to download commands to an existing CCD camera and collect image data from the camera to the PC. The embedded chip in the system is a Cyclone FPGA with a configurable Nios II soft-core processor. Hardware structure of the system, configuration for the embedded soft-core processor, and peripherals of the processor in the PFGA are described. The C program run in the Nios II embedded system is built in the Nios II IDE kits and the C++ program used in the PC is developed in the Microsoft's Visual C++ environment. Some key techniques in design and implementation of the C and VC++ programs are presented, including the downloading of the camera commands, initialization of the camera, DMA control, TCP/IP communication and UDP data uploading.

  11. A real-time spectrum acquisition system design based on quantum dots-quantum well detector

    Science.gov (United States)

    Zhang, S. H.; Guo, F. M.

    2016-01-01

    In this paper, we studied the structure characteristics of quantum dots-quantum well photodetector with response wavelength range from 400 nm to 1000 nm. It has the characteristics of high sensitivity, low dark current and the high conductance gain. According to the properties of the quantum dots-quantum well photodetectors, we designed a new type of capacitive transimpedence amplifier (CTIA) readout circuit structure with the advantages of adjustable gain, wide bandwidth and high driving ability. We have implemented the chip packaging between CTIA-CDS structure readout circuit and quantum dots detector and tested the readout response characteristics. According to the timing signals requirements of our readout circuit, we designed a real-time spectral data acquisition system based on FPGA and ARM. Parallel processing mode of programmable devices makes the system has high sensitivity and high transmission rate. In addition, we realized blind pixel compensation and smoothing filter algorithm processing to the real time spectrum data by using C++. Through the fluorescence spectrum measurement of carbon quantum dots and the signal acquisition system and computer software system to realize the collection of the spectrum signal processing and analysis, we verified the excellent characteristics of detector. It meets the design requirements of quantum dot spectrum acquisition system with the characteristics of short integration time, real-time and portability.

  12. [Hyperspectral acquisition system for tongue inspection based on X-Y scanning galvanometer].

    Science.gov (United States)

    Li, Gang; Zhao, Jing; Lin, Ling; Zhang, Bao-ju

    2011-12-01

    Hyperspectral was used for tongue inspection in the present work to resolve the problem that information of current research for tongue inspection was inadequate. A hyperspectral acquisition system based on X-Y scanning galvanometer was also proposed due to the high cost of the current hyperspectral apparatus. An experiment was made to test the ability of this system. By collecting the hyperspectral information of color pictures with size similar to the tongue, the results of experiment showed that this system can acquire more information of tongue than other methods, and this method can provide a new way for tongue inspection.

  13. Design and implementation of high-speed real-time data acquisition system based on FPGA

    Institute of Scientific and Technical Information of China (English)

    WANG Xu-ying; LU Ying-hua; ZHANG Li-kun

    2006-01-01

    The electromagnetic radiation will result in information leakage being recovered when computers work. This article presents a high-speed real-time data acquisition system based on peripheral component interconnect (PCI) bus and field programmable gate array (FPGA) for sampling electromagnetic radiation caused by video signal. The hardware design and controlling flow of each module are introduced in detail. The sampling rate can reach 64 Msps and system transfers speed can be up to 128 Mb/s by using time interleaving, which increases the overall sampling speed of a system by operating two data converters in parallel.

  14. ICAS:An Incremental Concept Acquisition System Using Attribute—Based Description

    Institute of Scientific and Technical Information of China (English)

    陈世福; 陈彬; 等

    1992-01-01

    ICAS is an incremental comcept acquistion system using attribute-based description.It includes an algorithm for leaming concept,which induces a rule set from an example set based on the probability theory,and an algorithm for refining the rule set.This paper also introduces the learning cycles.a very useful idea of ICAS.In fact,concept acquisition by ICAS is an incremental process consisting of many such learning cyeles.Also the design and implementation of ICAS are gieven.

  15. Design of a hand-shape acquisition and recognition system based on DSP

    Science.gov (United States)

    Li, Wenwen; Liu, Fu; Gao, Lei

    2013-10-01

    In this paper, we design a hand-shape image acquisition and processing system based on DSP for solving the problem of hand-shape recognition. Acquisition configuration was designed, and the key parts (encoder, decoder, memory chip etc.) are selected. And a new method for hand-shape recognition based on wavelet moment is presented to overcome some shortage in present method for hand shape recognition. Firstly, image processing including binary processing and segment of hand silhouette are used, and then translation and scale normalization algorithms is implemented on the palms and fingers image. After that the wavelet moment characteristics of image are extracted. At last, support vector is achieved by training 100 images data in images database, 10 testing images were selected randomly to verify validity and feasibility of algorithms. Experimental results indicate that the 10 testing images are all classified correctly. The new method of extracting hand shape wavelet moment as characteristic matrix is easy to realize with characteristic of high utility and accuracy, and solve the problem of translation, rotation and scaling during the image acquisition process without positioning aids.

  16. A Spartan 6 FPGA-based data acquisition system for dedicated imagers in nuclear medicine

    Science.gov (United States)

    Fysikopoulos, E.; Loudos, G.; Georgiou, M.; David, S.; Matsopoulos, G.

    2012-12-01

    We present the development of a four-channel low-cost hardware system for data acquisition, with application in dedicated nuclear medicine imagers. A 12 bit octal channel high-speed analogue to digital converter, with up to 65 Msps sampling rate, was used for the digitization of analogue signals. The digitized data are fed into a field programmable gate array (FPGA), which contains an interface to a bank of double data rate 2 (DDR2)-type memory. The FPGA processes the digitized data and stores the results into the DDR2. An ethernet link was used for data transmission to a personal computer. The embedded system was designed using Xilinx's embedded development kit (EDK) and was based on Xilinx's Microblaze soft-core processor. The system has been evaluated using two different discrete optical detector arrays (a position-sensitive photomultiplier tube and a silicon photomultiplier) with two different pixelated scintillator arrays (BGO, LSO:Ce). The energy resolution for both detectors was approximately 25%. A clear identification of all crystal elements was achieved in all cases. The data rate of the system with this implementation can reach 60 Mbits s-1. The results have shown that this FPGA data acquisition system is a compact and flexible solution for single-photon-detection applications. This paper was originally submitted for inclusion in the special feature on Imaging Systems and Techniques 2011.

  17. On-line acquisition, analysis and presentation of neurophysiological data based on a personal microcomputer system.

    Science.gov (United States)

    Stromquist, B R; Pavlides, C; Zelano, J A

    1990-12-01

    A microcomputer based system is described for the acquisition, averaging, displaying, analysis and storage of electrophysiological (EPSP and post-stimulus histogram) data. The system consists of commercially available hardware (IBM-PC AT compatible, 80286 or 80386 based microcomputer, Burr-Brown analog-to-digital (A/D) converter), a custom built interface module, and a combination of commercially available and custom built software packages. The software operates within a Microsoft Windows environment and is comprised of custom built data acquisition and review modules which are linked to Microsoft's Excel program. The system is capable of four channel A/D conversion of EPSP's at a sampling frequency of up to 10 KHz (50 KHz single channel), the averaging of data including the addition and subtraction of various channels, the graphical display of data, the extraction of various data parameters, and the transfer of data to an Excel spreadsheet. The spreadsheet allows for the development of mathematical formulas for statistical analysis of data and presentation of the results in graphical form. Finally, data can easily be output to a laser printer or plotter. A sample experiment, illustrating system operation, is presented.

  18. Remote Fault Information Acquisition and Diagnosis System of the Combine Harvester Based on LabVIEW

    Science.gov (United States)

    Chen, Jin; Wu, Pei; Xu, Kai

    Most combine harvesters have not be equipped with online fault diagnosis system. A fault information acquisition and diagnosis system of the Combine Harvester based on LabVIEW is designed, researched and developed. Using ARM development board, by collecting many sensors' signals, this system can achieve real-time measurement, collection, displaying and analysis of different parts of combine harvesters. It can also realize detection online of forward velocity, roller speed, engine temperature, etc. Meanwhile the system can judge the fault location. A new database function is added so that we can search the remedial measures to solve the faults and also we can add new faults to the database. So it is easy to take precautions against before the combine harvester breaking down then take measures to service the harvester.

  19. Host-based data acquisition system to control pulsed facilities of the accelerator

    Science.gov (United States)

    Zamriy, V. N.

    2016-09-01

    The report discusses development of the host-based system to carry out timed measurements and data acquisition for the control of pulsed facilities of the accelerator. We consider modes of timing and allocation of operations of channels and the system node. The time of any working cycle of the pulsed facilities, rate of a data flow and an amount of serviced channels are coordinated with operation characteristics of the system node. Estimations of the readout rate of the data and the waiting time demonstrate the system efficiency. The technique has been developed to provide checking of groups of pulse parameters and control the facilities of the linear accelerator of electrons LUE-200 of the neutron source IREN.

  20. Application of Transaction Cost Economics to Capabilities-Based Acquisition: Exploring Single Service vs. Joint Service Programs and Single Systems vs. System-of-Systems

    Science.gov (United States)

    2008-04-23

    Åèìáëáíáçå= oÉëÉ~êÅÜ=póãéçëáìã= APPLICATION OF TRANSACTION COST ECONOMICS TO CAPABILITIES-BASED ACQUISITION: EXPLORING SINGLE SERVICE VS. JOINT...COVERED 00-00-2008 to 00-00-2008 4. TITLE AND SUBTITLE Application of Transaction Cost Economics to Capabilities-Based Acquisition: Exploring...Application of Transaction Cost Economics to Capabilities- based Acquisition: Exploring Single Service vs. Joint Service Programs and Single Systems

  1. Vol. 30 - A Novel Data Acquisition System Based on Fast Optical Links and Universal Readout Boards

    CERN Document Server

    Korcyl, Grzegorz

    2015-01-01

    Various scale measurement systems are composed of the sensors providing data through the data acquisition system to the archiving facility. The scale of such systems is determined by the number of sensors that require processing and can vary from few up to hundreds of thousands. The number and the type of sensors impose several requirements on the data acquisition system like readout frequency, measurement precision and online analysis algorithms. The most challenging application s are the large scale experiments in nuclear and particle physics . This thesis presents a concept , construction and tests of a modular and scalable, tree - structured architecture of a data acquisition system. The system is composed out of two logical elemen ts: endpoints which are the modules providing data and hubs that concentrate the data streams from the endpoints and provide connectivity with the rest of the system. Those two logica...

  2. Design and Development of PC Based Data Acquisition System for Radiation Measurement

    Directory of Open Access Journals (Sweden)

    M. A. A. Mashud

    2013-06-01

    Full Text Available A PC based data acquisition was designed and developed using GM detector and a programmable microcontroller 16F876 of PIC family. This unit was calibrated with the standard Canberra Counter. It gave prompt response directly and has low power consumption. It was tested for gamma ray measurement to continuously monitor a radiological resulting from the natural and man-made sources that threat site security and human health. The system was simple to use, required no additional hardware and allows the selection of data. The collected data were easily being exported to a PC via parallel port. A "C" language program was developed to control the function of the entire system, using PCWH compiler.

  3. FPGA based High Speed Data Acquisition System for High Energy Physics Application

    CERN Document Server

    Mandal, Swagata; Chakrabarti, Amlan; Chattopadhyay, Subhasis

    2015-01-01

    In high energy physics experiments (HEP), high speed and fault resilient data communication is needed between detectors/sensors and the host PC. Transient faults can occur in the communication hardware due to various external effects like presence of charged particles, noise in the environment or radiation effects in HEP experiments and that leads to single/multiple bit error. In order to keep the communication system functional in such a radiation environment where direct intervention of human is not possible, a high speed data acquisition (DAQ) architecture is necessary which supports error recovery. This design presents an efficient implementation of field programmable gate array (FPGA) based high speed DAQ system with optical communication link supported by multi-bit error correcting model. The design has been implemented on Xilinx Kintex-7 board and is tested for board to board communication as well as for PC communication using PCI (Peripheral Component Interconnect express). Data communication speed up...

  4. EBT data acquisition and analysis system

    Energy Technology Data Exchange (ETDEWEB)

    Burris, R.D.; Greenwood, D.E.; Stanton, J.S.; Geoffroy, K.A.

    1980-10-01

    This document describes the design and implementation of a data acquisition and analysis system for the EBT fusion experiment. The system includes data acquisition on five computers, automatic transmission of that data to a large, central data base, and a powerful data retrieval system. The system is flexible and easy to use, and it provides a fully documented record of the experiments.

  5. Design and implementation of photoelectric rotary table data acquisition and analysis system host computer software based on VC++ and MFC

    Science.gov (United States)

    Yang, Dawei; Yang, Xiufang; Han, Junfeng; Yan, Xiaoxu

    2015-02-01

    Photoelectric rotary table is mainly used in the defense industry and military fields, especially in the shooting range, target tracking, target acquisition, aerospace aspects play an important one. For range photoelectric measuring equipment field test application requirements, combined with a portable photoelectric rotary table data acquisition hardware system, software programming platform is presented based on the VC++, using MFC prepared PC interface, the realization of photoelectric turntable data acquisition, analysis and processing and debugging control. The host computer software design of serial communication and protocol, real-time data acquisition and display, real-time data curve drawing, analog acquisition, debugging guide, error analysis program, and gives the specific design method. Finally, through the photoelectric rotary table data acquisition hardware system alignment, the experimental results show that host computer software can better accomplish with lower machine data transmission, data acquisition, control and analysis, and to achieve the desired effect, the entire software system running performance is stable, flexible, strong practicality and reliability, the advantages of good scalability.

  6. A Geoweb-Based Tagging System for Borderlands Data Acquisition

    Directory of Open Access Journals (Sweden)

    Hanfa Xing

    2015-08-01

    Full Text Available Borderlands modeling and understanding depend on both spatial and non-spatial data, which were difficult to obtain in the past. This has limited the progress of borderland-related research. In recent years, data collection technologies have developed greatly, especially geospatial Web 2.0 technologies including blogs, publish/subscribe, mashups, and GeoRSS, which provide opportunities for data acquisition in borderland areas. This paper introduces the design and development of a Geoweb-based tagging system that enables users to tag and edit geographical information. We first establish the GeoBlog model, which consists of a set of geospatial components, posts, indicators, and comments, as the foundation of the tagging system. GeoBlog is implemented such that blogs are mashed up with OpenStreetMap. Moreover, we present an improvement to existing publish/subscribe systems with support for spatio-temporal events and subscriptions, called Spatial Publish/Subscribe, as well as the event agency network for routing messages from the publishers to the subscribers. A prototype system based on this approach is implemented in experiments. The results of this study provide an approach for asynchronous interaction and message-ordered transfer in the tagging system.

  7. Design of bridge crane girder strain acquisition system based on virtual instrument

    Directory of Open Access Journals (Sweden)

    Wenxue LIU

    Full Text Available Girder is an important part of the bridge crane, which is also the main force element. In order to prevent accidents, it is necessary to collect the bridge crane girder stress data to analyse the fatigue life. This paper constructs a bridge crane girder strain acquisition system. The hardware system consists of sensors, connectors, data acquisition cards, wireless data transmission groups, POE power and host computer. The software system consists of NI MAX to interface with the computer's NI hardware and software resources,and LabVIEW programming to display and storage the girder strain data. Through this system, positions and working days strain data acquisition for the 50/10 t bridge crane girder gets the key positions strain data. The results show that the girder strain data acquisition system runs stably, channel signals of acquisition task transmit accurately, and the terminal data stores competely, meeting the detection requirements, which provides an important data support for the subsequent fatigue analysis and accurate remaining service life prediction of the crane girder.

  8. MICROPROCESSOR-BASED DATA-ACQUISITION SYSTEM FOR A BOREHOLE RADAR.

    Science.gov (United States)

    Bradley, Jerry A.; Wright, David L.

    1987-01-01

    An efficient microprocessor-based system is described that permits real-time acquisition, stacking, and digital recording of data generated by a borehole radar system. Although the system digitizes, stacks, and records independently of a computer, it is interfaced to a desktop computer for program control over system parameters such as sampling interval, number of samples, number of times the data are stacked prior to recording on nine-track tape, and for graphics display of the digitized data. The data can be transferred to the desktop computer during recording, or it can be played back from a tape at a latter time. Using the desktop computer, the operator observes results while recording data and generates hard-copy graphics in the field. Thus, the radar operator can immediately evaluate the quality of data being obtained, modify system parameters, study the radar logs before leaving the field, and rerun borehole logs if necessary. The system has proven to be reliable in the field and has increased productivity both in the field and in the laboratory.

  9. An FPGA-based data acquisition system for directional dark matter detection

    Science.gov (United States)

    Yang, Chen; Nicoloff, Catherine; Sanaullah, Ahmed; Sridhar, Arvind; Herbordt, Martin; Battat, James; Battat Lab at Wellesley College Team; CAAD Lab at Boston University Team

    2017-01-01

    Directional dark matter detection is a powerful tool in the search for dark matter. Low-pressure gas TPCs are commonly used for directional detection, and dark-matter-induced recoils are mm long. These tracks can be reconstructed by micropatterned readouts. Because large detector volumes are needed, a cost-effective data acquisition system capable of scaling to large channel counts (105 or 106) is required. The Directional Recoil Identification From Tracks (DRIFT) collaboration has pioneered the use of TPCs for directional detection. We employ a negative ion gas with drift speed comparable to the electron drift speed in liquid argon (LAr). We aim to use electronics developed for million-channel readouts in large LAr neutrino detectors. We have built a prototype Micromegas-based directional detector with 103 channels. A FPGA-based back-end system (BE) receives a 12 Gbps data stream from eight ASIC-based front-end boards (FE), each with 128 detector channels. The BE buffers 3 μs of pretrigger data for all channels in DRAM, and streams triggered data to a host PC. We will describe the system architecture and present preliminary measurements from the DAQ. We acknowledge the support of the Research Corporation for Science Advancement, the NSF and the Massachusetts Space Grant Consortium.

  10. The Linux Based Distributed Data Acquisition System for the ISTRA+ Experiment

    Institute of Scientific and Technical Information of China (English)

    A.Filin; A.Inyakin; 等

    2001-01-01

    The DAQ hardware of the ISTRA+experiment consists of the VME system crate that contains two PCI-VME bridges interfacing two PC's with VME,external interrupts receiver,the readout controller for dedicated front-end electronics,the read-out controller buffer memory module,the VME-CAMAC interface,and additional control modules,The DAQ computing consist of 6 PC's running the Linux operating system and linked into LAN.The first PC serves the external interrupts and acquires the data from front-end electronics,The second one is the slow control computer.The remaining PC's host the monitoring and data analysis software.The Linux based DAQ software provides the external interrupts procssing,the data acquisition,recording,and distribution between monitoring and data analysis tasks running at DAQ PC's.The monitoring programs are based on two packages for data visualization:home-written on and the ROOT system.My SQl is used as a DAQ database.

  11. Acquisition system for the CLIC Module

    CERN Document Server

    Vilalte, Sebastien

    2011-01-01

    The status of R&D activities for CLIC module acquisition are discussed [1]. LAPP is involved in the design of the local CLIC module acquisition crate, described in the document Study of the CLIC Module Front-End Acquisition and Evaluation Electronics [2]. This acquisition system is a project based on a local crate, assigned to the CLIC module, including several mother boards. These motherboards are foreseen to hold mezzanines dedicated to the different subsystems. This system has to work in radiation environment. LAPP is involved in the development of Drive Beam stripline position monitors read-out, described in the document Drive Beam Stripline BPM Electronics and Acquisition [3]. LAPP also develops a generic acquisition mezzanine that allows to perform all-around acquisition and components tests for drive beam stripline BPM read-out.

  12. OPSO - The OpenGL based Field Acquisition and Telescope Guiding System

    Science.gov (United States)

    Škoda, P.; Fuchs, J.; Honsa, J.

    2006-07-01

    We present OPSO, a modular pointing and auto-guiding system for the coudé spectrograph of the Ondřejov observatory 2m telescope. The current field and slit viewing CCD cameras with image intensifiers are giving only standard TV video output. To allow the acquisition and guiding of very faint targets, we have designed an image enhancing system working in real time on TV frames grabbed by BT878-based video capture card. Its basic capabilities include the sliding averaging of hundreds of frames with bad pixel masking and removal of outliers, display of median of set of frames, quick zooming, contrast and brightness adjustment, plotting of horizontal and vertical cross cuts of seeing disk within given intensity range and many more. From the programmer's point of view, the system consists of three tasks running in parallel on a Linux PC. One C task controls the video capturing over Video for Linux (v4l2) interface and feeds the frames into the large block of shared memory, where the core image processing is done by another C program calling the OpenGL library. The GUI is, however, dynamically built in Python from XML description of widgets prepared in Glade. All tasks are exchanging information by IPC calls using the shared memory segments.

  13. A System for English Vocabulary Acquisition Based on Code-Switching

    Science.gov (United States)

    Mazur, Michal; Karolczak, Krzysztof; Rzepka, Rafal; Araki, Kenji

    2016-01-01

    Vocabulary plays an important part in second language learning and there are many existing techniques to facilitate word acquisition. One of these methods is code-switching, or mixing the vocabulary of two languages in one sentence. In this paper the authors propose an experimental system for computer-assisted English vocabulary learning in…

  14. ARC-VM: An architecture real options complexity-based valuation methodology for military systems-of-systems acquisitions

    Science.gov (United States)

    Domercant, Jean Charles

    The combination of today's national security environment and mandated acquisition policies makes it necessary for military systems to interoperate with each other to greater degrees. This growing interdependency results in complex Systems-of-Systems (SoS) that only continue to grow in complexity to meet evolving capability needs. Thus, timely and affordable acquisition becomes more difficult, especially in the face of mounting budgetary pressures. To counter this, architecting principles must be applied to SoS design. The research objective is to develop an Architecture Real Options Complexity-Based Valuation Methodology (ARC-VM) suitable for acquisition-level decision making, where there is a stated desire for more informed tradeoffs between cost, schedule, and performance during the early phases of design. First, a framework is introduced to measure architecture complexity as it directly relates to military SoS. Development of the framework draws upon a diverse set of disciplines, including Complexity Science, software architecting, measurement theory, and utility theory. Next, a Real Options based valuation strategy is developed using techniques established for financial stock options that have recently been adapted for use in business and engineering decisions. The derived complexity measure provides architects with an objective measure of complexity that focuses on relevant complex system attributes. These attributes are related to the organization and distribution of SoS functionality and the sharing and processing of resources. The use of Real Options provides the necessary conceptual and visual framework to quantifiably and traceably combine measured architecture complexity, time-valued performance levels, as well as programmatic risks and uncertainties. An example suppression of enemy air defenses (SEAD) capability demonstrates the development and usefulness of the resulting architecture complexity & Real Options based valuation methodology. Different

  15. A Service-oriented FPGA-based 3D Model Acquisition System

    Directory of Open Access Journals (Sweden)

    MACHIDON, O. M.

    2015-11-01

    Full Text Available This paper proposes a non-contact, low cost 3D scanning solution using laser striping. The solution is composed of two main parts: the hardware setup - used for acquiring the object's 3D surface information, and the software part - that processes the information and obtains the 3D model representation of the object. We propose two major improvements over the traditional scanning solutions: the 3D information acquisition is based on a reconfigurable hardware platform - a Xilinx Spartan 6 FPGA - which adds flexibility and scalability to the scanning process, while the 3D model reconstruction is remotely available "as a Service", by the means of a web interface that abstracts away the complexity of the underlying processes and improves the performance, while granting easy sharing between users. By separating data capture process from the 3D model reconstruction tasks the system gains in portability - a feature that is absent for most existing solutions. The service-oriented approach brings on a performance gain, since the computational intensive tasks are handled by dedicated servers and ease of use of the system, because the user does not have to bother managing and using the software tools locally.

  16. Design of the SLAC RCE Platform: A General Purpose ATCA Based Data Acquisition System

    Energy Technology Data Exchange (ETDEWEB)

    Herbst, R. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Claus, R. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Freytag, M. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Haller, G. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Huffer, M. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Maldonado, S. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Nishimura, K. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; O' Grady, C. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Panetta, J. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Perazzo, A. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Reese, B. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Ruckman, L. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Thayer, J. G. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.; Weaver, M. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Research Engineering Div.

    2015-01-23

    The SLAC RCE platform is a general purpose clustered data acquisition system implemented on a custom ATCA compliant blade, called the Cluster On Board (COB). The core of the system is the Reconfigurable Cluster Element (RCE), which is a system-on-chip design based upon the Xilinx Zynq family of FPGAs, mounted on custom COB daughter-boards. The Zynq architecture couples a dual core ARM Cortex A9 based processor with a high performance 28nm FPGA. The RCE has 12 external general purpose bi-directional high speed links, each supporting serial rates of up to 12Gbps. 8 RCE nodes are included on a COB, each with a 10Gbps connection to an on-board 24-port Ethernet switch integrated circuit. The COB is designed to be used with a standard full-mesh ATCA backplane allowing multiple RCE nodes to be tightly interconnected with minimal interconnect latency. Multiple shelves can be clustered using the front panel 10-gbps connections. The COB also supports local and inter-blade timing and trigger distribution. An experiment specific Rear Transition Module adapts the 96 high speed serial links to specific experiments and allows an experiment-specific timing and busy feedback connection. This coupling of processors with a high performance FPGA fabric in a low latency, multiple node cluster allows high speed data processing that can be easily adapted to any physics experiment. RTEMS and Linux are both ported to the module. The RCE has been used or is the baseline for several current and proposed experiments (LCLS, HPS, LSST, ATLAS-CSC, LBNE, DarkSide, ILC-SiD, etc).

  17. Inverse spiking filter based acquisition enhancement in software based global positioning system receiver

    Directory of Open Access Journals (Sweden)

    G. Arul Elango

    2015-01-01

    Full Text Available The lower visibility of the satellite in the acquisition stage of a GPS receiver under worst noisy situation leads to reacquisition of the data and thereby takes a longer time to obtain the first position fix. If the impulse noise affects the GPS signal, the conventional ways of acquiring the satellites do not guarantee to meet the minimum requirement of four satellites to find the user position. The performance of GPS receiver acquisition can be improved in the low SNR level using inverse spiking filtering technique. In the proposed method, the estimate of the desired GPS L1 signal corrupted by impulse noise (gn is obtained by the prediction error filter (hopt, which is the optimum inverse filter that reshapes the noisy signal (yn into a desired GPS signal (xn. In the proposed method, to detect the visible satellites under weak signal conditions the traditional differential coherent approach is combined with the inverse spiking filter method to increase the number of visible satellites and to avoid the reacquisition process. Montecarlo simulation is carried out to assess the performance of the proposed method for C/N0 of 20 dB-Hz and results indicate that the modified differential coherent method effectively excises the noise with 90% probability of detection. Subsequently tracking operation is also tested to confirm the acquisition performance by demodulating the navigation data successfully.

  18. DANSS Experiment Data Acquisition System

    CERN Document Server

    Hons, Zdenek

    2016-01-01

    DANSS (Detector of the reactor AntiNeutrino based on Solid Scintillator) is a project aiming to measure a spectrum of reactor antineutrinos using inverse beta decay (IBD) in a plastic scintillator. The detector is located close to an industrial nuclear reactor core and is covered by passive and active shielding. It is expected to detect about 15000 IBD events per day. Light from the detector is sensed by PMT and SiPM. This paper describes the data acquisition system used for data readout of the 50 detector PMT channels and active shielding. Theoretical approach to the data acquisition is described and two possible solutions using QDCs and digitizers are discussed. Also described are the results of the DAQ performance during routine data taking operation of the detector.

  19. A microcomputer-based sleep system: data acquisition and system calibration programs.

    Science.gov (United States)

    Vivaldi, E A; Pastel, R H; Bakalian, M J; Fernstrom, J D

    1988-01-01

    A data acquisition program is described for the Apple II series of microcomputers that allows for continuous, direct monitoring of electrographic elements from cortical, hippocampal and muscle leads from rats. The program detects cortical delta waves and sigma activity, hippocampal theta activity and electromyographic activity. The detected elements are counted and stored in memory at 15 second intervals (bins). Every three hours, the data are transferred to disks for permanent storage and off-line analysis.

  20. Web-based data acquisition

    Institute of Scientific and Technical Information of China (English)

    胡旭东; 俞红; 陈鹰

    2002-01-01

    The research work on Web-based long-distance data acquisition (DAQ) is valuable for application to tele-detection machine faults. With an expert system for machine fault detection, faults in a distantly located machine can be diagnosed through the internet. The distant user logs on to the expert system Web page, fills in the requirements, and starts-up the diagnose process. The system then connects to the DAQ server that is installed in the machine, samples data required for diagnoses through the internet, and sends back diagnose results. In such a long-distance system, Web-based DAQ plays an important role by automatic sampling and transferring of data through the internet. We have built an experimental data acquisition system using a National Instruments AT-MIO-16E-10 board running under Ch language environment. In this experimental example, the user can acquire data online. The principle of this experimental method is introduced in this paper. A detailed programming technique is described with an example.

  1. Data Driven - Android based displays on data acquisition and system status

    CERN Document Server

    Canilho, Paulo

    2014-01-01

    For years, both hardware and software engineers have struggled with the acquisition of device information in a flexible and fast perspective, numerous devices cannot have their status quickly tested due to time limitation associated with the travelling to a computer terminal. For instance, in order to test a scintillator status, one has to inject beam into the device and quickly return to a terminal to see the results, this is not only time demanding but extremely inconvenient for the person responsible, it consumes time that would be used in more pressing matters. In this train of thoughts, the proposal of creating an interface to bring a stable, flexible, user friendly and data driven solution to this problem was created. Being the most common operative system for mobile display, the Android API proved to have the best efficient in financing, since it is based on an open source software, and in implementation difficulty since it’s backend development resides in JAVA calls and XML for visual representation...

  2. Electric vehicle data acquisition system

    DEFF Research Database (Denmark)

    Svendsen, Mathias; Winther-Jensen, Mads; Pedersen, Anders Bro

    2014-01-01

    and industrial applications, e.g. research in electric vehicle driving patterns, vehicle substitutability analysis and fleet management. The platform is based on a embedded computer running Linux, and features a high level of modularity and flexibility. The system operates independently of the make of the car......, by using the On-board Diagnostic port to identify car model and adapt its software accordingly. By utilizing on-board Global Navigation Satellite System, General Packet Radio Service, accelerometer, gyroscope and magnetometer, the system not only provides valuable data for research in the field of electric......A data acquisition system for electric vehicles is presented. The system connects to the On-board Diagnostic port of newer vehicles, and utilizes the in-vehicle sensor network, as well as auxiliary sensors, to gather data. Data is transmitted continuously to a central database for academic...

  3. Aircraft Nodal Data Acquisition System (ANDAS) Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Development of an Aircraft Nodal Data Acquisition System (ANDAS) based upon the short haul Zigbee networking standard is proposed. It employs a very thin (135 um)...

  4. Remote collaborative pseudo-dynamic testing system based on acquisition board control

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    In this paper,NetSLab network platform for remote collaborative pseudo-dynamic testing,which was developed recently by a research group led by the Hunan University,is presented.Aiming at MTS system which is widely used in structural tesring.the control method with acquisition board Was investigated in this study to realize the communication interface between NetSLab and MTS system,and open up the remote collaborative pseudo-dynamic testing system.Using the developed testing system,a collaborative pseudo-dynamic testing on LAN was carried out successfully.The result manifests that the data transmission and collaborative control can be implemented accurately between NetSLab and MTS system,so that the usability of the testing system is validated.

  5. A Measure of Systems Engineering Effectiveness in Government Acquisition of Complex Information Systems: A Bayesian Belief Network-Based Approach

    Science.gov (United States)

    Doskey, Steven Craig

    2014-01-01

    This research presents an innovative means of gauging Systems Engineering effectiveness through a Systems Engineering Relative Effectiveness Index (SE REI) model. The SE REI model uses a Bayesian Belief Network to map causal relationships in government acquisitions of Complex Information Systems (CIS), enabling practitioners to identify and…

  6. A self contained Linux based data acquisition system for 2D detectors with delay line readout

    Science.gov (United States)

    Beltran, D.; Toledo, J.; Klora, A. C.; Ramos-Lerate, I.; Martínez, J. C.

    2007-01-01

    This article describes a fast and self-contained data acquisition system for 2D gas-filled detectors with delay line readout. It allows the realization of time resolved experiments in the millisecond scale. The acquisition system comprises of an industrial PC running Linux, a commercial time-to-digital converter and an in-house developed histogramming PCI card. The PC provides a mass storage for images and a graphical user interface for system monitoring and control. The histogramming card builds images with a maximum count rate of 5 MHz limited by the time-to-digital converter. Histograms are transferred to the PC at 85 MB/s. This card also includes a time frame generator, a calibration channel unit and eight digital outputs for experiment control. The control software was developed for easy integration into a beamline, including scans. The system is fully operational at the Spanish beamline BM16 at the ESRF in France, the neutron beamlines Adam and Eva at the ILL in France, the Max Plank Institute in Stuttgart in Germany, the University of Copenhagen in Denmark and at the future ALBA synchrotron in Spain. Some representative collected images from synchrotron and neutron beamlines are presented.

  7. Portable Data Acquisition System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Armstrong researchers have developed a portable data acquisition system (PDAT) that can be easily transported and set up at remote locations to display and archive...

  8. [Mobile phone based data acquisition and evaluation system for the alternative four diagnostic methods of traditional Chinese medicine].

    Science.gov (United States)

    Yang, Jun; Liu, Jing; Liu, Ran

    2013-01-01

    This study is dedicated to integrate the theories of the four diagnostic methods of TCM and the methods of mobile healthcare so as to achieve the goal of the four diagnostic functions of TCM on mobile phone. An Android smartphone based data acquisition system has been developed and experimentally demonstrated. It was shown that the prototype could successfully achieve the fundamental function of the four diagnostic methods of TCM and thus help preliminarily interpret the symptoms of human diseases.

  9. Behavior of a trapezoid-based data acquisition system up to 100 kHz and beyond

    CERN Document Server

    Schmidt, Stefan; Glorius, Jan; Hampel, Gabriele; Plag, Ralf; Reifarth, René; Slavkovská, Zuzana; Sonnabend, Kerstin; Stieghorst, Christian; Wiehl, Norbert; Zauner, Stephan

    2016-01-01

    In this work, we investigated the ability of a high-purity germanium detector connected to a trapezoid-filter-based data acquisition system to reliably record signals in spite of high sample activities. By activating multiple Na$_{2}$CO$_{3}$ samples with different Na content, we were able to deduce efficiency, resolution and dead time of the system used as a function of the sample activity. Based on the results, we were able to find a setting which allows measurements of event rates up to 35~kHz per readout channel with an energy resolution of 0.3\\% at the 2754 keV $^{24}$Na line.

  10. FPGA Based High Speed Data Acquisition System for Electrical Impedance Tomography.

    Science.gov (United States)

    Khan, S; Borsic, A; Manwaring, Preston; Hartov, Alexander; Halter, Ryan

    2013-03-01

    Electrical Impedance Tomography (EIT) systems are used to image tissue bio-impedance. EIT provides a number of features making it attractive for use as a medical imaging device including the ability to image fast physiological processes (>60 Hz), to meet a range of clinical imaging needs through varying electrode geometries and configurations, to impart only non-ionizing radiation to a patient, and to map the significant electrical property contrasts present between numerous benign and pathological tissues. To leverage these potential advantages for medical imaging, we developed a modular 32 channel data acquisition (DAQ) system using National Instruments' PXI chassis, along with FPGA, ADC, Signal Generator and Timing and Synchronization modules. To achieve high frame rates, signal demodulation and spectral characteristics of higher order harmonics were computed using dedicated FFT-hardware built into the FPGA module. By offloading the computing onto FPGA, we were able to achieve a reduction in throughput required between the FPGA and PC by a factor of 32:1. A custom designed analog front end (AFE) was used to interface electrodes with our system. Our system is wideband, and capable of acquiring data for input signal frequencies ranging from 100 Hz to 12 MHz. The modular design of both the hardware and software will allow this system to be flexibly configured for the particular clinical application.

  11. Microcomputer-based equipment-control and data-acquisition system for fission-reactor reactivity-worth measurements

    Energy Technology Data Exchange (ETDEWEB)

    McDowell, W.P.; Bucher, R.G.

    1980-01-01

    Material reactivity-worth measurements are one of the major classes of experiments conducted on the Zero Power research reactors (ZPR) at Argonne National Laboratory. These measurements require the monitoring of the position of a servo control element as a sample material is positioned at various locations in a critical reactor configuration. In order to guarantee operational reliability and increase experimental flexibility for these measurements, the obsolete hardware-based control unit has been replaced with a microcomputer based equipment control and data acquisition system. This system is based on an S-100 bus, dual floppy disk computer with custom built cards to interface with the experimental system. To measure reactivity worths, the system accurately positions samples in the reactor core and acquires data on the position of the servo control element. The data are then analyzed to determine statistical adequacy. The paper covers both the hardware and software aspects of the design.

  12. Simulation-based Decision Support for Acquisition Policy and Process Design: The Effect of System and Enterprise Characteristics on Acquisition Outcomes

    Science.gov (United States)

    2009-04-22

    Research Policy , 30(7), 1019-1039. Ford, D.N., & Dillard, J.T. (2008). Modeling the integration of open systems and evolutionary acquisition in DoD...manufacturing firm. Research Policy 24(3), 419- 440. Ulrich, K., & Tung, K. (1991). Fundamentals of product modularity. In Issues in Design/Manufacture

  13. Microcontroller-Based Fault Tolerant Data Acquisition System For Air Quality Monitoring And Control Of Environmental Pollution

    Directory of Open Access Journals (Sweden)

    Tochukwu Chiagunye

    2015-08-01

    Full Text Available ABSTRACT The design applied Passive fault tolerance to a microcontroller based data acquisition system to achieve the stated considerations where redundant sensors and microcontrollers with associated circuitry were designed and implemented to enable measurement of pollutant concentration information from chimney vents in two industry. Microsoft visual basic was used to develop a data mining tool which implemented an underlying artificial neural network model for forecasting pollutant concentrations for future time periods. The feed forward back propagation method was used to train the ANN model with a training data set while a decision tree algorithm was used to select an optimal output result for the model from its two output neurons.

  14. 4{\\pi}{\\beta} (LS)-{\\gamma} (HPGe) Digital Coincidence System Based on Synchronous High-Speed Multichannel Data Acquisition

    CERN Document Server

    Chen, Jifeng; Liang, Juncheng; Liu, Jiacheng

    2015-01-01

    A dedicated 4{\\pi}{\\beta} (LS)-{\\gamma} (HPGe)digital coincidence system has been developed in this work, which includes five acquisition channels. Three analog-to-digital converter (ADC) acquisition channels with an acquisition resolution of 8 bits and acquisition rate of 1GSPS (sample per second) are utilized to collect the signals from three Photo multiplier tubes (PMTs) which are adopted to detect {\\beta} decay, and two acquisition channels with an acquisition resolution of 16 bits and acquisition rate of 50MSPS are utilized to collect the signals from high-purity germanium (HPGe) which are adopted to detect {\\gamma} decay. In order to increase the accuracy of the coincidence system, all the five acquisition channels are synchronous within 500ps. The data collected by the five acquisition channels will be transmitted to the host PC through PCI bus and saved as a file. Off-line software is applied for the 4{\\pi}{\\beta} (LS)-{\\gamma} (HPGe) coincidence and data analysis as needed in practical application. W...

  15. The ALICE data acquisition system

    CERN Document Server

    Carena, F; Chapeland, S; Chibante Barroso, V; Costa, F; Dénes, E; Divià, R; Fuchs, U; Grigore, A; Kiss, T; Simonetti, G; Soós, C; Telesca, A; Vande Vyvre, P; Von Haller, B

    2014-01-01

    In this paper we describe the design, the construction, the commissioning and the operation of the Data Acquisition (DAQ) and Experiment Control Systems (ECS) of the ALICE experiment at the CERN Large Hadron Collider (LHC). The DAQ and the ECS are the systems used respectively for the acquisition of all physics data and for the overall control of the experiment. They are two computing systems made of hundreds of PCs and data storage units interconnected via two networks. The collection of experimental data from the detectors is performed by several hundreds of high-speed optical links. We describe in detail the design considerations for these systems handling the extreme data throughput resulting from central lead ions collisions at LHC energy. The implementation of the resulting requirements into hardware (custom optical links and commercial computing equipment), infrastructure (racks, cooling, power distribution, control room), and software led to many innovative solutions which are described together with ...

  16. Sustaining an Acquisition-based Growth Strategy

    DEFF Research Database (Denmark)

    Henningsson, Stefan; Toppenberg, Gustav; Shanks, Graeme

    complementarity, c) directing and governing the integration process, and d) post-acquisition evaluation of the achieved integration and proposing ways forward. Using the EA capability in the acquisition process improves Cisco’s ability to rapidly capture value from its acquisitions and to sustain its acquisition......-based growth strategy over time....

  17. The COMPASS data acquisition system

    CERN Document Server

    Fischer, H; Grünemaier, A; Heinsius, F H; Hoffmann, M; Karstens, F; Kastaun, W; Königsmann, K C; Niebuhr, M; Risken, R; Schmidt, T; Schmitt, H; Schweimler, A; Hodenberg, M V; Urban, H J

    2002-01-01

    A fully pipelined and massively parallel data acquisition system has been developed for the COMPASS experiment at CERN. The main requirements are to read 250000 detector channels at a trigger rate of up to 100 kHz. Such high rates are only possible when using a hit selection mechanism on the front-end combined with dead-time free readout. For this purpose, a time-to-digital converter (TDC) chip has been developed and is used for all time measurement applications in COMPASS. Distributed, field programmable gate array (FPGA)-based readout-driver modules handle parallel front-end initialization, synchronous trigger and control-signal distribution, and local event building at a processing speed of 160 Mbyte/s. Each of the 160 readout-driver modules connects to 16 front-end boards through independent twisted pair cables (CAT 7, 600 MHz) or optical fibers using an industrial (ESCON), self synchronizing link at 40 Mbyte/s. Automatic configuration through unique module and link identification ensures the flexibility ...

  18. Design of rainfall acquisition system based on GPRS%基于GPRS的雨量采集系统设计

    Institute of Scientific and Technical Information of China (English)

    任斌; 吴可; 陈洁

    2013-01-01

    Rainfall information is the main component of meteorological information,the prevention and control of flash floods is an important basis for decision-making,its real-time and reliability determines the accuracy of decision and scientific.At present,most of the rainfall acquisition system adopts the traditional collection methods and data transmission mode,cannot satisfy the requirement of the real-time data acquisition rainfall information.Based on GPRS rainfall collection system,through to the rainfall information remote automatic acquisition and information network transmission and digital management,realize the rainfall data collection,accurate for effective early warnting flash floods provides scientific basis%雨量信息是气象信息的主要组成部分,是山洪防治决策的重要依据,它的实时性和可靠性决定了决策的正确性和科学性.目前,多数雨量采集系统采用传统的采集手段和数据传输方式,满足不了雨量信息实时采集的要求.基于GPRS的雨量采集系统,通过对雨量信息的远程自动化采集,然后进行信息的网络传输与数字化管理,实现了雨量数据的准确采集,为有效预警山洪提供了科学的依据.

  19. Programmable fast data acquisition system

    Science.gov (United States)

    Montebugnoli, S.; Bianchi, G.; Zoni, L.

    The goal of this work is to investigate the possibility to install on modern radiotelescopes a fast and programmable backend instead of several backends, each dedicated to a single acquisition task. Such an approach could lower the costs and make available a more compact and flexible back end. Exploiting the state-of-the-art of the FPGAs (Field Programmable Gate Arrays) and innovative architectures, a programmable system might be conceived.

  20. Confidence-Based Feature Acquisition

    Science.gov (United States)

    Wagstaff, Kiri L.; desJardins, Marie; MacGlashan, James

    2010-01-01

    Confidence-based Feature Acquisition (CFA) is a novel, supervised learning method for acquiring missing feature values when there is missing data at both training (learning) and test (deployment) time. To train a machine learning classifier, data is encoded with a series of input features describing each item. In some applications, the training data may have missing values for some of the features, which can be acquired at a given cost. A relevant JPL example is that of the Mars rover exploration in which the features are obtained from a variety of different instruments, with different power consumption and integration time costs. The challenge is to decide which features will lead to increased classification performance and are therefore worth acquiring (paying the cost). To solve this problem, CFA, which is made up of two algorithms (CFA-train and CFA-predict), has been designed to greedily minimize total acquisition cost (during training and testing) while aiming for a specific accuracy level (specified as a confidence threshold). With this method, it is assumed that there is a nonempty subset of features that are free; that is, every instance in the data set includes these features initially for zero cost. It is also assumed that the feature acquisition (FA) cost associated with each feature is known in advance, and that the FA cost for a given feature is the same for all instances. Finally, CFA requires that the base-level classifiers produce not only a classification, but also a confidence (or posterior probability).

  1. Field Programmable Gate Array based Front-End Data Acquisition Module for the COSMICi Astroparticle Telescope System

    CERN Document Server

    McGowan, Darryl W; Frank, Michael P; Junnarkar, Sachin; O'Neal, Ray H

    2012-01-01

    We describe an FPGA based Front-End Data Acquisition Module (FEDAM) for implementing Time-over-Threshold (ToT) Time-to-Digital conversion (TDC) of pulses obtained from the COSMICi astroparticle telescope detector system photomultiplier tubes. The telescope system consists of a minimum of three scintillation detectors configured to detect particle airshowers likely initiated by Ultra High Energy Cosmic Rays (UHECR). The relative time delay of detection events between the detectors is used to estimate the angle of incidence of the shower. The FEDAM provides time-over-threshold measurements with a resolution of 2 ns. This allows determination of shower direction to an error of 0.035 (cos {\\theta})-1 radians where {\\theta} is the angle between the baseline axis through a pair of detectors and the plane representing the shower front.

  2. A new data acquisition and imaging system for nuclear microscopy based on a Field Programmable Gate Array card

    Science.gov (United States)

    Bettiol, A. A.; Udalagama, C.; Watt, F.

    2009-06-01

    The introduction of the new Field Programmable Gate Array (FPGA) cards by National Instruments has made it possible for the first time to develop reconfigurable custom data acquisition hardware easily with the LabVIEW programming environment. Data acquisition issues such as precise timing for scanning and operating system latencies can now be easily overcome using this new technology because the data acquisition software is embedded in the FPGA chip on the card. In this paper we present the first results of the new data acquisition system developed at the Centre for Ion Beam Applications (CIBA), National University of Singapore using the new National Instruments cards in conjunction with rack mountable Wilkinson type ADCs.

  3. Data Acquisition for Modular Biometric Monitoring System

    Science.gov (United States)

    Chmiel, Alan J. (Inventor); Humphreys, Bradley T. (Inventor); Grodsinsky, Carlos M. (Inventor)

    2014-01-01

    A modular system for acquiring biometric data includes a plurality of data acquisition modules configured to sample biometric data from at least one respective input channel at a data acquisition rate. A representation of the sampled biometric data is stored in memory of each of the plurality of data acquisition modules. A central control system is in communication with each of the plurality of data acquisition modules through a bus. The central control system is configured to collect data asynchronously, via the bus, from the memory of the plurality of data acquisition modules according to a relative fullness of the memory of the plurality of data acquisition modules.

  4. FPGA-based GEM detector signal acquisition for SXR spectroscopy system

    Science.gov (United States)

    Wojenski, A.; Pozniak, K. T.; Kasprowicz, G.; Kolasinski, P.; Krawczyk, R.; Zabolotny, W.; Chernyshova, M.; Czarski, T.; Malinowski, K.

    2016-11-01

    The presented work is related to the Gas Electron Multiplier (GEM) detector soft X-ray spectroscopy system for tokamak applications. The used GEM detector has one-dimensional, 128 channel readout structure. The channels are connected to the radiation-hard electronics with configurable analog stage and fast ADCs, supporting speeds of 125 MSPS for each channel. The digitalized data is sent directly to the FPGAs using fast serial links. The preprocessing algorithms are implemented in the FPGAs, with the data buffering made in the on-board 2Gb DDR3 memory chips. After the algorithmic stage, the data is sent to the Intel Xeon-based PC for further postprocessing using PCI-Express link Gen 2. For connection of multiple FPGAs, PCI-Express switch 8-to-1 was designed. The whole system can support up to 2048 analog channels. The scope of the work is an FPGA-based implementation of the recorder of the raw signal from GEM detector. Since the system will work in a very challenging environment (neutron radiation, intense electro-magnetic fields), the registered signals from the GEM detector can be corrupted. In the case of the very intense hot plasma radiation (e.g. laser generated plasma), the registered signals can overlap. Therefore, it is valuable to register the raw signals from the GEM detector with high number of events during soft X-ray radiation. The signal analysis will have the direct impact on the implementation of photon energy computation algorithms. As the result, the system will produce energy spectra and topological distribution of soft X-ray radiation. The advanced software was developed in order to perform complex system startup and monitoring of hardware units. Using the array of two one-dimensional GEM detectors it will be possible to perform tomographic reconstruction of plasma impurities radiation in the SXR region.

  5. Embedded Linux platform for data acquisition systems

    Energy Technology Data Exchange (ETDEWEB)

    Patel, Jigneshkumar J., E-mail: jjp@ipr.res.in [Institute for Plasma Research, Gandhinagar, Gujarat (India); Reddy, Nagaraj, E-mail: nagaraj.reddy@coreel.com [Sandeepani School of Embedded System Design, Bangalore, Karnataka (India); Kumari, Praveena, E-mail: praveena@ipr.res.in [Institute for Plasma Research, Gandhinagar, Gujarat (India); Rajpal, Rachana, E-mail: rachana@ipr.res.in [Institute for Plasma Research, Gandhinagar, Gujarat (India); Pujara, Harshad, E-mail: pujara@ipr.res.in [Institute for Plasma Research, Gandhinagar, Gujarat (India); Jha, R., E-mail: rjha@ipr.res.in [Institute for Plasma Research, Gandhinagar, Gujarat (India); Kalappurakkal, Praveen, E-mail: praveen.k@coreel.com [Sandeepani School of Embedded System Design, Bangalore, Karnataka (India)

    2014-05-15

    Highlights: • The design and the development of data acquisition system on FPGA based reconfigurable hardware platform. • Embedded Linux configuration and compilation for FPGA based systems. • Hardware logic IP core and its Linux device driver development for the external peripheral to interface it with the FPGA based system. - Abstract: This scalable hardware–software system is designed and developed to explore the emerging open standards for data acquisition requirement of Tokamak experiments. To address the future need for a scalable data acquisition and control system for fusion experiments, we have explored the capability of software platform using Open Source Embedded Linux Operating System on a programmable hardware platform such as FPGA. The idea was to identify the platform which can be customizable, flexible and scalable to support the data acquisition system requirements. To do this, we have selected FPGA based reconfigurable and scalable hardware platform to design the system with Embedded Linux based operating system for flexibility in software development and Gigabit Ethernet interface for high speed data transactions. The proposed hardware–software platform using FPGA and Embedded Linux OS offers a single chip solution with processor, peripherals such ADC interface controller, Gigabit Ethernet controller, memory controller amongst other peripherals. The Embedded Linux platform for data acquisition is implemented and tested on a Virtex-5 FXT FPGA ML507 which has PowerPC 440 (PPC440) [2] hard block on FPGA. For this work, we have used the Linux Kernel version 2.6.34 with BSP support for the ML507 platform. It is downloaded from the Xilinx [1] GIT server. Cross-compiler tool chain is created using the Buildroot scripts. The Linux Kernel and Root File System are configured and compiled using the cross-tools to support the hardware platform. The Analog to Digital Converter (ADC) IO module is designed and interfaced with the ML507 through Xilinx

  6. New data acquisition system for AMS

    Energy Technology Data Exchange (ETDEWEB)

    Pfenninger, R. [Paul Scherrer Inst. (PSI), Villigen (Switzerland)

    1997-09-01

    A new data acquisition system based on a VME front-end computer, a Sun workstation and a PC has been installed. It is used for the acquisition of mainly AMS data, their graphical display, and storage of the data in a Oracle database. The measurement of magazines of 25 sample each is fully automated. Several data parameters such as transmission are regularly checked. In case of problems the operator is informed by optical and/or acoustical signals. Screens are updated automatically after every measurement cycle. (author) 1 fig.

  7. LabVIEW-based control and data acquisition system for cathodoluminescence experiments.

    Science.gov (United States)

    Bok, J; Schauer, P

    2011-11-01

    Computer automation of cathodoluminescence (CL) experiments using equipment developed in our laboratory is described. The equipment provides various experiments for CL efficiency, CL spectra, and CL time response studies. The automation was realized utilizing the graphical programming environment LabVIEW. The developed application software with procedures for equipment control and data acquisition during various CL experiments is presented. As the measured CL data are distorted by technical limitations of the equipment, such as equipment spectral sensitivity and time response, data correction algorithms were incorporated into the procedures. Some examples of measured data corrections are presented.

  8. Design and commissioning of a timestamp-based data acquisition system for the DRAGON recoil mass separator

    CERN Document Server

    Christian, G; Connolly, D; Fallis, J; Hutcheon, D; Olchanski, K; Ruiz, C

    2014-01-01

    The DRAGON recoil mass separator at TRIUMF exists to study radiative proton and alpha capture reactions, which are important in a variety of astrophysical scenarios. DRAGON experiments require a data acquisition system that can be triggered on either reaction product ($\\gamma$ ray or heavy ion), with the additional requirement of being able to promptly recognize coincidence events in an online environment. To this end, we have designed and implemented a new data acquisition system for DRAGON which consists of two independently triggered readouts. Events from both systems are recorded with timestamps from a $20$ MHz clock that are used to tag coincidences in the earliest possible stage of the data analysis. Here we report on the design, implementation, and commissioning of the new DRAGON data acquisition system, including the hardware, trigger logic, coincidence reconstruction algorithm, and live time considerations. We also discuss the results of an experiment commissioning the new system, which measured the ...

  9. Design of data acquisition system based on FPGA%基于FPGA的数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    张博; 段哲民

    2012-01-01

    With the rapid development of information technology,a variety of data acquisition and processing in the modern industrial control and scientific research have become an indispensable part.The data acquisition system is a bridge between the computer smart instruments and the outside physical world,it is also an important way to get information.The FPGA chip XC3S400 of Xilinx company is as the core,which belongs to Spartan-3 family,and the ADC TLC0820 of TI company is as the analog to digital converter to design a data acquisition system based on FPGA.Using Verilog HDL language as description language implements sampling control of TLC0820 and data processing control of FPGA.By design input,analysis and synthesis,simulation and validation process simulate this system,which based on the Xilinx ISE 9.1i software.%随着信息技术的飞速发展,各种数据的采集和处理在现代工业控制和科学研究中已成为必不可少的部分。数据采集系统是计算机智能仪器与外界物理世界联系的桥梁,是获取信息的重要途径。以Xilinx公司的Spartan-3系列FPGA芯片XC3S400为核心,采用TI公司的TLC0820型号的A/D转换器作为模数转换器件,设计了一个基于FPGA的数据采集系统,并用Verilog HDL语言作为描述语言实现了对TLC0820的采样控制和FPGA的数据处理等过程的控制,以Xilinx ISE 9.1i软件为平台,进行了设计输入、分析与综合、仿真与验证等过程仿真实现了这一系统。

  10. CEBAF Distributed Data Acquisition System

    CERN Document Server

    Allison, Trent

    2005-01-01

    There are thousands of signals distributed throughout Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) that are useful for troubleshooting and identifying instabilities. Many of these signals are only available locally or monitored by systems with small bandwidths that cannot identify fast transients. The Distributed Data Acquisition (Dist DAQ) system will sample and record these signals simultaneously at rates up to 40 Msps. Its primary function will be to provide waveform records from signals throughout CEBAF to the Experimental Physics and Industrial Control System (EPICS). The waveforms will be collected after the occurrence of an event trigger. These triggers will be derived from signals such as periodic timers or accelerator faults. The waveform data can then be processed to quickly identify beam transport issues, thus reducing down time and increasing CEBAF performance. The Dist DAQ system will be comprised of multiple standalone chassis distributed throughout CEBAF. They will be i...

  11. The CDMS II data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    Bauer, D.A.; /Fermilab; Burke, S.; /UC, Santa Barbara; Cooley, J.; /Southern Methodist U.; Crisler, M.; /Fermilab; Cushman, P.; /Minnesota U.; DeJongh, F.; /Fermilab; Duong, L.; /Minnesota U.; Ferril, R.; /UC, Santa Barbara; Golwala, S.R.; /Caltech; Hall, J.; /Fermilab; Holmgren, D.; /Fermilab /Texas A-M

    2011-01-01

    The Data Acquisition System for the CDMS II dark matter experiment was designed and built when the experiment moved to its new underground installation at the Soudan Lab. The combination of remote operation and increased data load necessitated a completely new design. Elements of the original LabView system remained as stand-alone diagnostic programs, but the main data processing moved to a VME-based system with custom electronics for signal conditioning, trigger formation and buffering. The data rate was increased 100-fold and the automated cryogenic system was linked to the data acquisition. A modular server framework with associated user interfaces was implemented in Java to allow control and monitoring of the entire experiment remotely.

  12. Investigating Advances in the Acquisition of Secure Systems Based on Open Architectures

    Science.gov (United States)

    2012-08-30

    CORBA , Microsoft’s .NET, Enterprise Java Beans, and LGPL libraries. ● Configured system or sub‐system architectures—These are software systems that...Architecture (Kuhl, Weatherly, & Dahmann, 1999), CORBA , MS .NET, Enterprise Java Beans, and GNU Lesser General Public License (LGPL) libraries. Connectors can

  13. Monitoring the CMS Data Acquisition System

    CERN Document Server

    Bauer, Gerry; Biery, K; Branson, J; Cano, E; Cheung, H; Ciganek, M; Cittolin, S; Coarasa, J A; Deldicque, C; Dusinberre, E; Erhan, S; Fortes Rodrigues, F; Gigi, D; Glege, F; Gomez-Reino, R; Gutleber, J; Hatton, D; Laurens, J F; Lopez Perez, J A; Meijers, F; Meschi, E; Meyer, A; Mommsen, R; Moser, R; O'Dell, V; Oh, A; Orsini, L B; Patras, V; Paus, C; Petrucci, A; Pieri, M; Racz, A; Sakulin, H; Sani, M; Schieferdecker, P; Schwick, C; Shpakov, D; Simon, S; Sumorok, K; Zanetti, M.

    2010-01-01

    The CMS data acquisition system comprises O(20000) interdependent services that need to be monitored in near real-time. The ability to monitor a large number of distributed applications accurately and effectively is of paramount importance for robust operations. Application monitoring entails the collection of a large number of simple and composed values made available by the software components and hardware devices. A key aspect is that detection of deviations from a specified behaviour is supported in a timely manner, which is a prerequisite in order to take corrective actions efficiently. Given the size and time constraints of the CMS data acquisition system, efficient application monitoring is an interesting research problem. We propose an approach that uses the emerging paradigm of Web-service based eventing systems in combination with hierarchical data collection and load balancing. Scalability and efficiency are achieved by a decentralized architecture, splitting up data collections into regions of col...

  14. Broadband network on-line data acquisition system with web based interface for control and basic analysis

    Science.gov (United States)

    Polkowski, Marcin; Grad, Marek

    2016-04-01

    Passive seismic experiment "13BB Star" is operated since mid 2013 in northern Poland and consists of 13 broadband seismic stations. One of the elements of this experiment is dedicated on-line data acquisition system comprised of both client (station) side and server side modules with web based interface that allows monitoring of network status and provides tools for preliminary data analysis. Station side is controlled by ARM Linux board that is programmed to maintain 3G/EDGE internet connection, receive data from digitizer, send data do central server among with additional auxiliary parameters like temperatures, voltages and electric current measurements. Station side is controlled by set of easy to install PHP scripts. Data is transmitted securely over SSH protocol to central server. Central server is a dedicated Linux based machine. Its duty is receiving and processing all data from all stations including auxiliary parameters. Server side software is written in PHP and Python. Additionally, it allows remote station configuration and provides web based interface for user friendly interaction. All collected data can be displayed for each day and station. It also allows manual creation of event oriented plots with different filtering abilities and provides numerous status and statistic information. Our solution is very flexible and easy to modify. In this presentation we would like to share our solution and experience. National Science Centre Poland provided financial support for this work via NCN grant DEC-2011/02/A/ST10/00284.

  15. Monitoring the CMS data acquisition system

    Science.gov (United States)

    Bauer, G.; Behrens, U.; Biery, K.; Branson, J.; Cano, E.; Cheung, H.; Ciganek, M.; Cittolin, S.; Coarasa, J. A.; Deldicque, C.; Dusinberre, E.; Erhan, S.; Fortes Rodrigues, F.; Gigi, D.; Glege, F.; Gomez-Reino, R.; Gutleber, J.; Hatton, D.; Laurens, J. F.; Lopez Perez, J. A.; Meijers, F.; Meschi, E.; Meyer, A.; Mommsen, R.; Moser, R.; O'Dell, V.; Oh, A.; Orsini, L. B.; Patras, V.; Paus, C.; Petrucci, A.; Pieri, M.; Racz, A.; Sakulin, H.; Sani, M.; Schieferdecker, P.; Schwick, C.; Shpakov, D.; Simon, S.; Sumorok, K.; Zanetti, M.

    2010-04-01

    The CMS data acquisition system comprises O(20000) interdependent services that need to be monitored in near real-time. The ability to monitor a large number of distributed applications accurately and effectively is of paramount importance for robust operations. Application monitoring entails the collection of a large number of simple and composed values made available by the software components and hardware devices. A key aspect is that detection of deviations from a specified behaviour is supported in a timely manner, which is a prerequisite in order to take corrective actions efficiently. Given the size and time constraints of the CMS data acquisition system, efficient application monitoring is an interesting research problem. We propose an approach that uses the emerging paradigm of Web-service based eventing systems in combination with hierarchical data collection and load balancing. Scalability and efficiency are achieved by a decentralized architecture, splitting up data collections into regions of collections. An implementation following this scheme is deployed as the monitoring infrastructure of the CMS experiment at the Large Hadron Collider. All services in this distributed data acquisition system are providing standard web service interfaces via XML, SOAP and HTTP [15,22]. Continuing on this path we adopted WS-* standards implementing a monitoring system layered on top of the W3C standards stack. We designed a load-balanced publisher/subscriber system with the ability to include high-speed protocols [10,12] for efficient data transmission [11,13,14] and serving data in multiple data formats.

  16. An Empirical Research of Chinese Learners' Acquisition of the English Article System--Based on Syntactic Misanalysis Account

    Science.gov (United States)

    Jian, Shi

    2013-01-01

    In the field of applied linguistics, the English article is the acknowledged teaching and learning difficulty and receives lots of attention in second language acquisition (SLA). This paper, based on the Syntactic Misanalysis Account (SMA) advocated by Trenkic in which L2 articles are analyzed as adjectives by L2ers, proposes the English article…

  17. A computer based wireless system for online acquisition, monitoring and digital processing of ECG waveforms.

    Science.gov (United States)

    Bansal, Dipali; Khan, Munna; Salhan, Ashok K

    2009-04-01

    Various ECG instruments have addressed a wide variety of clinical and technical issues. However, there is still scope for improvement in them particularly in the area of their susceptibility to noise, lack of universal connectivity and off-line processing. A prototype system has been developed that caters to these limitations. It includes an analog system and a FM transceiver pair interfaced through sound port of the computer. The real time acquired data is viewed and filtered using MATLAB software. The ECG system described captures the bio-signal faithfully in real time wireless mode with minimum noise and has universal connectivity.

  18. Automated knowledge acquisition for second generation knowledge base systems: A conceptual analysis and taxonomy

    Energy Technology Data Exchange (ETDEWEB)

    Williams, K.E.; Kotnour, T.

    1991-01-01

    In this paper, we present a conceptual analysis of knowledge-base development methodologies. The purpose of this research is to help overcome the high cost and lack of efficiency in developing knowledge base representations for artificial intelligence applications. To accomplish this purpose, we analyzed the available methodologies and developed a knowledge-base development methodology taxonomy. We review manual, machine-aided, and machine-learning methodologies. A set of developed characteristics allows description and comparison among the methodologies. We present the results of this conceptual analysis of methodologies and recommendations for development of more efficient and effective tools.

  19. Automated knowledge acquisition for second generation knowledge base systems: A conceptual analysis and taxonomy

    Energy Technology Data Exchange (ETDEWEB)

    Williams, K.E.; Kotnour, T.

    1991-12-31

    In this paper, we present a conceptual analysis of knowledge-base development methodologies. The purpose of this research is to help overcome the high cost and lack of efficiency in developing knowledge base representations for artificial intelligence applications. To accomplish this purpose, we analyzed the available methodologies and developed a knowledge-base development methodology taxonomy. We review manual, machine-aided, and machine-learning methodologies. A set of developed characteristics allows description and comparison among the methodologies. We present the results of this conceptual analysis of methodologies and recommendations for development of more efficient and effective tools.

  20. Data acquisition and command system for use with a microprocessor-based control chassis. [PIGMI-Pion Generation for Medical Irradiations

    Energy Technology Data Exchange (ETDEWEB)

    Halbig, J.K.; Klosterbuer, S.F.; Martinez, V.A. Jr.

    1980-01-01

    The Pion Generation for Medical Irradiations (PIGMI) program at the Los Alamos Scientific Laboratory is developing the technology to build smaller, less expensive, and more reliable proton linear accelerators for medical applications, and has designed a powerful, simple, inexpensive, and reliable control and data acquisition system that is central to the program development. The system is a NOVA-3D minicomputer interfaced to several outlying microprocessor-based controllers, which accomplish control and data acquisition through data I/O chasis. The equipment interface chassis, which can issue binary commands, read binary data, issue analog commands, and read timed and untimed analog data is described.

  1. LabVIEW-based control and acquisition system for the dosimetric characterization of a silicon strip detector

    Science.gov (United States)

    Ovejero, M. C.; Pérez Vega-Leal, A.; Gallardo, M. I.; Espino, J. M.; Selva, A.; Cortés-Giraldo, M. A.; Arráns, R.

    2017-02-01

    The aim of this work is to present a new data acquisition, control, and analysis software system written in LabVIEW. This system has been designed to obtain the dosimetry of a silicon strip detector in polyethylene. It allows the full automation of the experiments and data analysis required for the dosimetric characterization of silicon detectors. It becomes a useful tool that can be applied in the daily routine check of a beam accelerator.

  2. CEBAF Distributed Data Acquisition System

    Energy Technology Data Exchange (ETDEWEB)

    Trent Allison; Thomas Powers

    2005-05-01

    There are thousands of signals distributed throughout Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) that are useful for troubleshooting and identifying instabilities. Many of these signals are only available locally or monitored by systems with small bandwidths that cannot identify fast transients. The Distributed Data Acquisition (Dist DAQ) system will sample and record these signals simultaneously at rates up to 40 Msps. Its primary function will be to provide waveform records from signals throughout CEBAF to the Experimental Physics and Industrial Control System (EPICS). The waveforms will be collected after the occurrence of an event trigger. These triggers will be derived from signals such as periodic timers or accelerator faults. The waveform data can then be processed to quickly identify beam transport issues, thus reducing down time and increasing CEBAF performance. The Dist DAQ system will be comprised of multiple standalone chassis distributed throughout CEBAF. They will be interconnected via a fiber optic network to facilitate the global triggering of events. All of the chassis will also be connected directly to the CEBAF Ethernet and run EPICS locally. This allows for more flexibility than the typical configuration of a single board computer and other custom printed circuit boards (PCB) installed in a card cage.

  3. Development and application of a light-weight, wind-turbine rotor-based data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    Berg, D.E.; Robertson, P.J.; Ortiz, M.F. [Sandia National Labs., Albuquerque, NM (United States)

    1998-04-01

    Wind-energy researchers at the National Wind Technology Center (NWTC), representing Sandia National Laboratories (SNL) and the National Renewable Energy Laboratory (NREL), are developing a new, light-weight, modular data acquisition unit capable of acquiring long-term, continuous time-series data from small and/or dynamic wind-turbine rotors. The unit utilizes commercial data acquisition hardware, spread-spectrum radio modems, and Global Positioning System receivers, and a custom-built programmable logic device. A prototype of the system is now operational, and initial field deployment is expected this summer. This paper describes the major subsystems comprising the unit, summarizes the current status of the system, and presents the current plans for near-term development of hardware and software.

  4. Data-Acquisition Systems for Fusion Devices

    NARCIS (Netherlands)

    van Haren, P. C.; Oomens, N. A.

    1993-01-01

    During the last two decades, computerized data acquisition systems (DASs) have been applied at magnetic confinement fusion devices. Present-day data acquisition is done by means of distributed computer systems and transient recorders in CAMAC systems. The development of DASs has been technology driv

  5. Design and commissioning of a timestamp-based data acquisition system for the DRAGON recoil mass separator

    Energy Technology Data Exchange (ETDEWEB)

    Christian, G.; Fallis, J.; Hutcheon, D.; Olchanski, K.; Ruiz, C. [TRIUMF, Vancouver (Canada); Akers, C. [TRIUMF, Vancouver (Canada); University of York, Department of Physics, Heslington, York (United Kingdom); Connolly, D. [Colorado School of Mines, Department of Physics, Golden, CO (United States)

    2014-04-15

    The DRAGON recoil mass separator at TRIUMF exists to study radiative proton and alpha capture reactions, which are important in a variety of astrophysical scenarios. DRAGON experiments require a data acquisition system that can be triggered on either reaction product (γ-ray or heavy ion), with the additional requirement of being able to promptly recognize coincidence events in an online environment. To this end, we have designed and implemented a new data acquisition system for DRAGON, which consists of two independently triggered readouts. Events from both systems are recorded with timestamps from a 20 MHz clock that are used to tag coincidences in the earliest possible stage of the data analysis. Here we report on the design, implementation, and commissioning of the new DRAGON data acquisition system, including the hardware, trigger logic, coincidence reconstruction algorithm, and live time considerations. We also discuss the results of an experiment commissioning the new system, which measured the strength of the E{sub c.m.} = 1113 keV resonance in the {sup 20} Ne(p, γ){sup 21} Na radiative proton capture reaction. (orig.)

  6. FPGA-based Time to Digital Converter and Data Acquisition system for High Energy Tagger of KLOE-2 experiment

    CERN Document Server

    Iafolla, L; Beretta, M; Ciambrone, P; Gatta, M; Gonnella, F; Mascolo, M; Messi, R; Moricciani, D; Riondino, D

    2012-01-01

    In order to reconstruct gamma-gamma physics events tagged with High Energy Tagger (HET) in the KLOE-2 (K LOng Experiment 2), we need to measure the Time Of Flight (TOF) of the electrons and positrons from the KLOE-2 Interaction Point (IP) to our tagging stations (11 m apart). The required resolution must be better than the bunch spacing (2.7 ns). We have developed and implemented on a Xilinx Virtex-5 FPGA a Time to Digital Converter (TDC) with 625 ps resolution (LSB) along with an embedded data acquisition system and the interface to the online FARM of KLOE-2. We will describe briefly the architecture of the TDC and of the Data AcQuisition (DAQ) system. Some more details will be provided about the zero-suppression algorithm used to reduce the data throughput.

  7. FPGA-based time to digital converter and data acquisition system for high energy tagger of KLOE-2 experiment

    Energy Technology Data Exchange (ETDEWEB)

    Iafolla, L., E-mail: lorenzo.iafolla@lnf.infn.it [INFN-LNF, Frascati, Rome (Italy); Università di Roma Tor Vergata, Rome (Italy); Balla, A.; Beretta, M.; Ciambrone, P.; Gatta, M.; Gonnella, F. [INFN-LNF, Frascati, Rome (Italy); Mascolo, M.; Messi, R. [Università di Roma Tor Vergata, Rome (Italy); INFN-Sezione Roma 2, Rome (Italy); Moricciani, D. [INFN-Sezione Roma 2, Rome (Italy); Riondino, D. [INFN-LNF, Frascati, Rome (Italy)

    2013-08-01

    In order to reconstruct γγ physics events tagged with High Energy Tagger (HET) in the KLOE-2 (K LOng Experiment 2), we need to measure the Time Of Flight (TOF) of the electrons and positrons from the KLOE-2 Interaction Point (IP) to our tagging stations (11 m apart). The required resolution must be better than the bunch spacing (2.7 ns). We have developed and implemented on a Xilinx Virtex-5 FPGA a Time to Digital Converter (TDC) with 625 ps resolution (LSB) along with an embedded data acquisition system and the interface to the online FARM of KLOE-2. We will describe briefly the architecture of the TDC and of the Data AcQuisition (DAQ) system. Some more details will be provided about the zero-suppression algorithm used to reduce the data throughput.

  8. CLIC-ACM: generic modular rad-hard data acquisition system based on CERN GBT versatile link

    Science.gov (United States)

    Bielawski, B.; Locci, F.; Magnoni, S.

    2015-01-01

    CLIC is a world-wide collaboration to study the next ``terascale'' lepton collider, relying upon a very innovative concept of two-beam-acceleration. This accelerator, currently under study, will be composed of the subsequence of 21000 two-beam-modules. Each module requires more than 300 analogue and digital signals which need to be acquired and controlled in a synchronous way. CLIC-ACM (Acquisition and Control Module) is the 'generic' control and acquisition module developed to accommodate the controls of all these signals for various sub-systems and related specification in term of data bandwidth, triggering and timing synchronization. This paper describes the system architecture with respect to its radiation-tolerance, power consumption and scalability.

  9. Study of customer acquisition support system for mobile operators

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The mobile operators are struggling for improving the market share and the revenues.One important method is to acquire the potential customers from the competitors.This article presents a whole acquisition process and an integrated framework for customer acquisition support system (CASS).The core of the system is the customer acquisition identification models which are built based on data mining technologies.The CASS can automate the acquisition process and decrease the cost and implement precise marketing strategy for mobile operators.

  10. Data Acquisition System for RPC Testing

    CERN Document Server

    Ahmed, Ijaz; Ansari, Muhammad Hamid; Asghar, Muhammad Irfan; Asghar, Sajjad; Awan, Irfan Ullah; Butt, Jamila; Hoorani, Hafeez R; Khurshid, Ishtiaq Hussain Taimoor; Muhammad, Saleh; Shahzad, Hassan; Aftab, Zia; Iftikhar, Mian; Khan, Mohammad Khalid; Saleh, M

    2008-01-01

    The Data Acquisition (DAQ) System of the Compact Muon Solenoid (CMS) RPC test station was built in National Centre for Physics (NCP) during the year 2004-2005 with joint efforts by NCP and PAEC groups. The system is based on the NIM, VME and CAMAC technologies which allowed users to test 10 RPCs simultaneously. With the help of our facility more than 300 RPCs were tested and finally shipped to CERN. This note describes different components of the DAQ in detail and presents a few results from the online DAQ.

  11. Jefferson Lab Data Acquisition Run Control System

    Energy Technology Data Exchange (ETDEWEB)

    Vardan Gyurjyan; Carl Timmer; David Abbott; William Heyes; Edward Jastrzembski; David Lawrence; Elliott Wolin

    2004-10-01

    A general overview of the Jefferson Lab data acquisition run control system is presented. This run control system is designed to operate the configuration, control, and monitoring of all Jefferson Lab experiments. It controls data-taking activities by coordinating the operation of DAQ sub-systems, online software components and third-party software such as external slow control systems. The main, unique feature which sets this system apart from conventional systems is its incorporation of intelligent agent concepts. Intelligent agents are autonomous programs which interact with each other through certain protocols on a peer-to-peer level. In this case, the protocols and standards used come from the domain-independent Foundation for Intelligent Physical Agents (FIPA), and the implementation used is the Java Agent Development Framework (JADE). A lightweight, XML/RDF-based language was developed to standardize the description of the run control system for configuration purposes.

  12. Risk Management Programs for Defense Acquisition Systems

    Science.gov (United States)

    2007-11-02

    The audit objective was to evaluate the effectiveness of risk management programs for Defense acquisition systems. Specifically, we determined whether DoD risk management policies and procedures for Defense acquisition systems were effectively implemented and what impact risk management programs bad on reducing program risks and costs. We also reviewed management controls as they applied to the audit objectives.

  13. High-speed Data Acquisition System Based on TUSB 6020%基于TUSB6020的高速数据采集系统研究

    Institute of Scientific and Technical Information of China (English)

    王志生; 李飚

    2011-01-01

    在现代生产中,数据采集作为获取信息的手段地位越来越重要,为了实现数据采集和高速传输,在概述TI公司的TUSB 6020 USB 2.0接口芯片功能和结果的基础上,利用TI公司的TMS320C6424数字信号处理器和TUSB 6020USB 2.0接口芯片组成高速数据采集系统,主要研究各个系统的特性和相互之间的连接,实现数据采集系统.实验表明,系统在DSP的控制下实现了数据的采集和高速传输.%In modern production. data acquisition as a mean of information acquisition is becoming increasingly important. In order to ensure data acquisition and high-speed data transmission, based on TI's TUSB6020 USB2. 0 interface chip, the TI 's TMS320C6424 digital signal processor and TUSB6020 USB2. 0 interface are adopted to constitute the high-speed data acqui-sition system. The characteristics and relationship of each system are studied. The experimental results show that the data ac-quisition and high-speed data transmission are realized under the control of DSP.

  14. Data Acquisition System of FlashADC on GTAF Facility

    Institute of Scientific and Technical Information of China (English)

    ZHANG; Qi-wei; HE; Guo-zhu; HUANG; Xing; RUAN; Xi-chao; ZHOU; Zu-ying; ZHU; Xing-hua

    2013-01-01

    The data acquisition system of GTAF facility bases on the digitizer of FlashADC(DC271A,made by Acqiris Technologies Inc.),which can achieve the acquisition of experimental data and real-time monitoring of on-line measure by the capture of digital full pulse waveform from 40 BaF2 detectors.Fig.1

  15. Acquisition Management for System-of-Systems: Requirement Evolution and Acquisition Strategy Planning

    Science.gov (United States)

    2012-04-30

    Director, Office of Acquisition Resources and Analysis ( ARA )  Deputy Assistant Secretary of the Navy, Acquisition & Procurement  Director of Open...geographically distributed, heterogeneous , collaborative systems that demonstrate operational and managerial independences. The collaboration can be

  16. System Design Based on PMD-1208 LS Data Acquisition Card%PMD-1208 LS数据采集卡系统设计

    Institute of Scientific and Technical Information of China (English)

    方霞; 张燕; 赵娟娟

    2013-01-01

    Introduce a set of PC data acquisition system based on PMD-1208LS data acquisition card and LabVIEW,the system adopts the PMD-1208LS data acquisition card,through the USB interface PC machine is linked together,using LabVIEW software platform to establish the temperature data acquisition system and data transmission,so as to realize the signal from acquisition to display ( waveform display and data list display) ,storage and playback. The data acquisition system uses the MCC producting data acquisition card PMD-1208LS to realize high speed data real-time transmission and processing. In the PC using virtual instrument can share hardware and soft-ware resources,fast and convenient to set up all kinds of digital signal processing system,and by means of the function of the computer to finish data processing,storage and graphical display,etc. After the test,reached the data acquisition,processing,storage and playback basi-cally,and easy to use and intuitive.%介绍了一套基于PMD-1208LS数据采集卡和基于LabVIEW的PC数据采集系统,系统采用PMD-1208LS数据采集卡,通过USB接口与PC机相连,利用软件平台LabVIEW建立温度数据采集系统并进行数据传输,以实现信号从采集到显示(波形显示和数据列表显示)、存储和回放。该数据采集系统采用美国MCC公司生产的数据采集卡PMD-1208LS实现数据的高速实时传输与处理。在PC机上运用虚拟仪器能共享硬件和软件资源,快速、方便地组建各种数字信号处理系统,并可借助计算机的功能,进行数据处理、存储以及图形化显示等。经过实验检测,基本达到了数据采集、处理、存储和回放的目的,并且使用方便、直观。

  17. Conceptual design of data acquisition and control system for two Rf driver based negative ion source for fusion R&D

    Science.gov (United States)

    Soni, Jigensh; Yadav, R. K.; Patel, A.; Gahlaut, A.; Mistry, H.; Parmar, K. G.; Mahesh, V.; Parmar, D.; Prajapati, B.; Singh, M. J.; Bandyopadhyay, M.; Bansal, G.; Pandya, K.; Chakraborty, A.

    2013-02-01

    Twin Source - An Inductively coupled two RF driver based 180 kW, 1 MHz negative ion source experimental setup is initiated at IPR, Gandhinagar, under Indian program, with the objective of understanding the physics and technology of multi-driver coupling. Twin Source [1] (TS) also provides an intermediate platform between operational ROBIN [2] [5] and eight RF drivers based Indian test facility -INTF [3]. A twin source experiment requires a central system to provide control, data acquisition and communication interface, referred as TS-CODAC, for which a software architecture similar to ITER CODAC core system has been decided for implementation. The Core System is a software suite for ITER plant system manufacturers to use as a template for the development of their interface with CODAC. The ITER approach, in terms of technology, has been adopted for the TS-CODAC so as to develop necessary expertise for developing and operating a control system based on the ITER guidelines as similar configuration needs to be implemented for the INTF. This cost effective approach will provide an opportunity to evaluate and learn ITER CODAC technology, documentation, information technology and control system processes, on an operational machine. Conceptual design of the TS-CODAC system has been completed. For complete control of the system, approximately 200 Nos. control signals and 152 acquisition signals are needed. In TS-CODAC, control loop time required is within the range of 5ms - 10 ms, therefore for the control system, PLC (Siemens S-7 400) has been chosen as suggested in the ITER slow controller catalog. For the data acquisition, the maximum sampling interval required is 100 micro second, and therefore National Instruments (NI) PXIe system and NI 6259 digitizer cards have been selected as suggested in the ITER fast controller catalog. This paper will present conceptual design of TS -CODAC system based on ITER CODAC Core software and applicable plant system integration processes.

  18. Complex System Governance for Acquisition

    Science.gov (United States)

    2016-04-30

    includes acquisition. In this paper, after an introduction of our perception of the problem space, we outline the nine essential meta functions and...implications for the wider acquisition field. ^Åèìáëáíáçå=oÉëÉ~êÅÜ=mêçÖê~ãW= `êÉ~íáåÖ=póåÉêÖó=Ñçê=fåÑçêãÉÇ=`Ü~åÖÉ= - 197 - Introduction As...capital markets : Wall Street and the Pentagon. An annotated brief. Boudreau, M. (2007). Acoustic rapid COTS insertion: A case study in modular open

  19. SSC/BCD data acquisition system proposal

    Energy Technology Data Exchange (ETDEWEB)

    Barsotti, E.; Bowden, M.; Swoboda, C. [Fermilab, Batavia, IL (United States)

    1989-04-01

    The proposed new data acquisition system architecture takes event fragments off a detector over fiber optics and to a parallel event building switch. The parallel event building switch concept, taken from the telephone communications industry, along with expected technology improvements in fiber-optic data transmission speeds over the next few years, should allow data acquisition system rates to increase dramatically and exceed those rates needed for the SSC. This report briefly describes the switch architecture and fiber optics for a SSC data acquisition system.

  20. A microcomputer-based data acquisition and control system for the direct shear, ring shear, triaxial shear, and consolidation tests

    Science.gov (United States)

    Powers, Philip S.

    1983-01-01

    This report is intended to provide internal documentation for the U.S. Geological Survey laboratory's automatic data acquisition system. The operating procedures for each type of test are designed to independently lead a first-time user through the various stages of using the computer to control the test. Continuing advances in computer technology and the availability of desktop microcomputers with a wide variety of peripheral equipment at a reasonable cost can create an efficient automated geotechnical testing environment. A geotechnical testing environment is shown in figure 1. Using an automatic data acquisition system, laboratory test data from a variety of sensors can be collected, and manually or automatically recorded on a magnetic device at the same apparent time. The responses of a test can be displayed graphically on a CRT in a matter of seconds, giving the investigator an opportunity to evaluate the test data, and to make timely, informed decisions on such matters as whether to continue testing, abandon a test, or modify procedures. Data can be retrieved and results reported in tabular form, or graphic plots, suitable for publication. Thermistors, thermocouples, load cells, pressure transducers, and linear variable differential transformers are typical sensors which are incorporated in automated systems. The geotechnical tests which are most practical to automate are the long-term tests which often require readings to be recorded outside normal work hours and on weekends. Automation applications include incremental load consolidation tests, constant-rate-of-strain consolidation tests, direct shear tests, ring shear tests, and triaxial shear tests.

  1. Performance-Based Services Acquisition

    Science.gov (United States)

    2011-02-01

    Nonetheless, it is clear that contracting will continue to play an important role in the DoD even after the U.S. military presence is reduced in Iraq and...13 R.C., Jr. 2006). PBSA became the latest term for outcomes-based contracting after the issuance of the Office of Federal Procurement Policy’s...demand through two phenomena known as the whiplash effect and supply push. Currently, the system has high and rising maintenance costs, long

  2. 基于System Generator的GPS信号捕获模块的实现%Implementation of GPS Signal Acquisition Module Based on System Generator

    Institute of Scientific and Technical Information of China (English)

    胡辉; 吴超; 张虎; 高明华

    2012-01-01

    System Generator for DSP是业内领先的高级系统级FPGA开发工具.本文基于该软件设计并实现了4通道GPS信号捕获模块,其中包括平均采样、本地C/A码、FFT/IFFT运算、复数乘法运算、扫频控制和结果返回等6个模块,并利用Xilinx的Viertx-5 XC5VSX50T-FF665芯片对模块进行了硬件协同验证.测试结果表明:设计实现的捕获模块能够准确地捕获GPS信号,与利用硬件描述语言的方法相比,本文的方法大大缩短了开发周期.%Model design software--System Generator for DSP is the industry leader in advanced system--level FPGA development tools. In this paper, based on System Generator. A GPS signal acquisition module of four channels is designed and implemented.The module contalned six modules totally', which are the average,satmpling module, the local C/A code module,the FFT/IFFT calculation module, the eomplexlng multiple ealeulation,module, the sweeping frequency controlling module andthe results returning module. Viertx-5 XC5VSX50T-FF665 FPGA chip of Xilinx is used on the module's hardware eo-verificalion. The experimental results show that the GPS signal acquisition module designed and implementated could capture the GPS signal accurately, comparing to the traditional hardware description language method, the method de,described in this paper could reduce the development time cycle greatly.

  3. 基于虚拟仪器的温度采集系统设计%Design of Temperature Acquisition System Based on Virtual Instruments

    Institute of Scientific and Technical Information of China (English)

    吉淑娇; 雷艳敏

    2014-01-01

    利用NI公司的第三代数据采集硬件驱动程序DAQmx,研究开发基于虚拟仪器的温度采集系统。通过PXI-6251和SCXI-1102温度采集模块配合,外接K型热电偶,以LabVIEW 8.6软件为开发平台,实现了温度信号的采集和处理平台。此平台可以用于学生课上演示数据采集的过程,也可以用于科学研究。%This paper, using the third generation of data acquisition hardware driving program DAQmx by NI Company, researches and develops a temperature acquisition system based on virtual instruments. Through the PXI-6251 data acquisition card and SCXI-1102 module, as well as external connection of K type thermocouple,taking LabVIEW 8. 6 software as the developing platform, the system realizes the temperature signal acquisition and processing. The platform can be both used for presentation of the data collection process for students and scientific study.

  4. First-Order Acoustic Wave Equation Reverse Time Migration Based on the Dual-Sensor Seismic Acquisition System

    Science.gov (United States)

    You, Jiachun; Liu, Xuewei; Wu, Ru-Shan

    2017-03-01

    We analyze the mathematical requirements for conventional reverse time migration (RTM) and summarize their rationale. The known information provided by current acquisition system is inadequate for the second-order acoustic wave equations. Therefore, we introduce a dual-sensor seismic acquisition system into the coupled first-order acoustic wave equations. We propose a new dual-sensor reverse time migration called dual-sensor RTM, which includes two input variables, the pressure and vertical particle velocity data. We focus on the performance of dual-sensor RTM in estimating reflection coefficients compared with conventional RTM. Synthetic examples are used for the study of estimating coefficients of reflectors with both dual-sensor RTM and conventional RTM. The results indicate that dual-sensor RTM with two inputs calculates amplitude information more accurately and images structural positions of complex substructures, such as the Marmousi model, more clearly than that of conventional RTM. This shows that the dual-sensor RTM has better accuracy in backpropagation and carries more information in the directivity because of particle velocity injection. Through a simple point-shape model, we demonstrate that dual-sensor RTM decreases the effect of multi-pathing of propagating waves, which is helpful for focusing the energy. In addition, compared to conventional RTM, dual-sensor RTM does not cause extra memory costs. Dual-sensor RTM is, therefore, promising for the computation of multi-component seismic data.

  5. Aircraft Nodal Data Acquisition System (ANDAS) Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Development of an Aircraft Nodal Data Acquisition System (ANDAS) is proposed. The proposed methodology employs the development of a very thin (135m) hybrid...

  6. Data acquisition for sensor systems

    CERN Document Server

    Taylor, H Rosemary

    1997-01-01

    'Data acquisition' is concerned with taking one or more analogue signals and converting them to digital form with sufficient accu­ racy and speed to be ready for processing by a computer. The increasing use of computers makes this an expanding field, and it is important that the conversion process is done correctly because information lost at this stage can never be regained, no matter how good the computation. The old saying - garbage in, garbage out - is very relevant to data acquisition, and so every part of the book contains a discussion of errors: where do they come from, how large are they, and what can be done to reduce them? The book aims to treat the data acquisition process in depth with less detailed chapters on the fundamental principles of measure­ ment, sensors and signal conditioning. There is also a chapter on software packages, which are becoming increasingly popular. This is such a rapidly changing topic that any review of available pro­ grams is bound to be out of date before the book re...

  7. A novel time stamping technique for distributed data acquisition systems.

    Science.gov (United States)

    Subramaniam, E T

    2012-12-01

    In this paper, we discuss the design and implementation of a synchronizing technique for data acquisition systems, which can effectively use the normal, standard local area network cables to provide a time stamp, with a range up to 32 days, resolution of 10 ns, and synchronization within ± 5 ns. This system may be used to synchronize data being collected by independent heterogeneous data acquisition modules, that acquire events independently. Such distributed systems are generally designed with a tree-like structure or independent self-triggered acquisition boxes. These leaf edges are connected through branches to the root node, via non-bus based inter-connecting links. The present system has been tested with a set of self-triggered digital signal processing based data acquisition engines, having a 100 MHz analog to digital converter front end.

  8. Performance and Implementation of PRACH Fase Acquisition in WCDMA System

    Institute of Scientific and Technical Information of China (English)

    QIULing; HUANGYongjia; ZHUJinkang

    2003-01-01

    The performance and method and implementation of PRACH(physical random access channel)acquisition in WCDMA(wideband code division multiple access)system is investigated in this paper.The analysis shows that the conventional Pesudo-noise(PN)code acquisition methods are not suitable for achieving both short acquisition time and less hardware resource expense.Thus we propose the quasi-matched filter acquisition scheme of PRACH preamble based on fast Hadamard transform(FHT).And we implement this method by hardware in the practical WCDMA field trial system.The simulation and test results show that the proposed scheme achives the following performance:the detection probability with Eb/No=7dB is no less than 95%,and the mean acquisition time is less than 1.33ms.

  9. Data Acquisition System of the Virgo Gravitational Waves Interferometric Detector

    OpenAIRE

    Acernese, F.; Amico, P.; Alshourbagy, M.; Antonucci, F. (Fausta); Aoudia, S.; Astone, P.; Avino, S; Babusci, D.; Ballardin, G; Barone, F.; Barsotti, L.; Barsuglia, M.; Bauer, Th.S.; Beauville, F.; Bigotta, S.

    2007-01-01

    International audience; Virgo is an experiment aiming at the detection of gravitational waves emitted by astrophysical sources. Its detector, based on a 3km arms interferometer, is a complex setup which requires several digital control loops running up to 10kHz, an accurate and reliable central timing system and an efficient data acquisition, all of them being distributed over 3km. We overview here the main hardware and software components developed for the data acquisition system (DAQ) and i...

  10. A Simple X-ray Spectrometer and PC-based Data Acquisition System for Newly Developed X-ray Source Based on Laser Compton Scattering

    Institute of Scientific and Technical Information of China (English)

    LUO Wen; XU Wang; PAN Qiang-yan; XU Yi; FAN Gong-tao; FAN Guang-wei; YANG Li-feng; LI Yong-jiang; YAN Zhe; XU Ben-ji

    2009-01-01

    A simple X-ray spectrometer and a PC-Based Data Acquisition System(DAS) have been developed newly in Shanghai Institute of Applied Physics(SINAP),Chinese Academy of Sciences (CAS) for the measurement of the X-ray source generated using laser Compton scattering.The system consists of liquid nitrogen cooled high resolution Si(Li) detector,electronics and a DAQ.The Si(Li) detector was designed and made by Center of Advanced Instruments in SINAP,CAS,it allows us to measure X-rays with the energy up to 60 keV and the energy resolution(FWHM) of 184 eV at 5.9 keV.We measured the system uncertainty was 0.2 eV and time drifting of detector was 0.05% both at 5.9 keV.The DAQ was based on Object-Oriented software LabVIEW 7.1,it has data on-line analysis and original data saved functions.

  11. Options for Next Generation Digital Acquisition Systems

    CERN Document Server

    Boccardi, A

    2011-01-01

    Digital acquisition system designers have an always increasing number of options in terms of bus standards and digital signal processing hardware among which to choose. This allows for high flexibility but also opens the door to a proliferation of different architectures, potentially limiting the reusability and the design synergies among the various instrumentation groups. This contribution illustrates the design trends in some of the major institutes around the world with design examples including VME, PCI and TCA based modular systems using AMC and/or FMC mezzanines. Some examples of FPGA design practices aimed at increasing reusability of code will be mentioned together with some of the tools already available to designers to improve the information exchange and collaboration, like the Open Hardware Repository project.

  12. 基于WinCE的远程数据采集系统设计%Design of Remote Data Acquisition System Based on WinCE

    Institute of Scientific and Technical Information of China (English)

    苏扬; 耿三钧

    2009-01-01

    To solve several problems of data acquisition system based on PC, a restate data acquisition system adopting WinCE. NET is presented. The total structure of the system is designed. The stream interface driver code of ADC converter is designed and in use of Winsockets, data transport and remote instructions receiving through network are developed. The system realizes data acquisition, network transporting, remote controlling functions with the characteristics of flexibility and streamlin-ing.%针对基于PC的数据采集系统组建复杂、灵活性差等缺点,提出采用WinCE平台的嵌入式数据采集系统设计方案.进行系统整体设计,并设计WinCE平台下AD转化器流接口驱动程序,利用WinSockets实现网络数据传输和远程控制功能.系统实现了数据采集、网络传榆、远程控制等功能,具有结构精简,组网灵活等优点.

  13. Data acquisition system based on Matlab and DSP%基于Matlab与dsp的数据采集系统

    Institute of Scientific and Technical Information of China (English)

    何强; 潘宏侠; 刘平

    2013-01-01

      采用模型设计的方法,使用TI公司TMS320F28335数字信号处理芯片为核心搭建硬件电路,利用Matlab中的Embedded coder和Stateflow搭建系统模型,通过Matlab与CCS连接,进行代码的自动生成及DSP程序的调试,实现数据采集功能。%Using the method of model design,using TMS320F28335 digital signal processing chip of TI company as the core building hardware circuit,using Embedded coder and Stateflow build system model in matlab,through Matlab and CCS connection,generate code automatic and DSP program debugging,realize data acquisition function.

  14. Development of An Embedded FPGA-Based Data Acquisition System Dedicated to Zero Power Reactor Noise Experiments

    Directory of Open Access Journals (Sweden)

    Arkani Mohammad

    2014-08-01

    Full Text Available An embedded time interval data acquisition system (DAS is developed for zero power reactor (ZPR noise experiments. The system is capable of measuring the correlation or probability distribution of a random process. The design is totally implemented on a single Field Programmable Gate Array (FPGA. The architecture is tested on different FPGA platforms with different speed grades and hardware resources. Generic experimental values for time resolution and inter-event dead time of the system are 2.22 ns and 6.67 ns respectively. The DAS can record around 48-bit x 790 kS/s utilizing its built-in fast memory. The system can measure very long time intervals due to its 48-bit timing structure design. As the architecture can work on a typical FPGA, this is a low cost experimental tool and needs little time to be established. In addition, revisions are easily possible through its reprogramming capability. The performance of the system is checked and verified experimentally.

  15. A tailored 200 parameter VME based data acquisition system for IBA at the Lund Ion Beam Analysis Facility - Hardware and software

    Science.gov (United States)

    Elfman, Mikael; Ros, Linus; Kristiansson, Per; Nilsson, E. J. Charlotta; Pallon, Jan

    2016-03-01

    With the recent advances towards modern Ion Beam Analysis (IBA), going from one- or few-parameter detector systems to multi-parameter systems, it has been necessary to expand and replace the more than twenty years old CAMAC based system. A new VME multi-parameter (presently up to 200 channels) data acquisition and control system has been developed and implemented at the Lund Ion Beam Analysis Facility (LIBAF). The system is based on the VX-511 Single Board Computer (SBC), acting as master with arbiter functionality and consists of standard VME modules like Analog to Digital Converters (ADC's), Charge to Digital Converters (QDC's), Time to Digital Converters (TDC's), scaler's, IO-cards, high voltage and waveform units. The modules have been specially selected to support all of the present detector systems in the laboratory, with the option of future expansion. Typically, the detector systems consist of silicon strip detectors, silicon drift detectors and scintillator detectors, for detection of charged particles, X-rays and γ-rays. The data flow of the raw data buffers out from the VME bus to the final storage place on a 16 terabyte network attached storage disc (NAS-disc) is described. The acquisition process, remotely controlled over one of the SBCs ethernet channels, is also discussed. The user interface is written in the Kmax software package, and is used to control the acquisition process as well as for advanced online and offline data analysis through a user-friendly graphical user interface (GUI). In this work the system implementation, layout and performance are presented. The user interface and possibilities for advanced offline analysis are also discussed and illustrated.

  16. A tailored 200 parameter VME based data acquisition system for IBA at the Lund Ion Beam Analysis Facility – Hardware and software

    Energy Technology Data Exchange (ETDEWEB)

    Elfman, Mikael, E-mail: Mikael.Elfman@nuclear.lu.se; Ros, Linus; Kristiansson, Per; Nilsson, E.J. Charlotta; Pallon, Jan

    2016-03-15

    With the recent advances towards modern Ion Beam Analysis (IBA), going from one- or few-parameter detector systems to multi-parameter systems, it has been necessary to expand and replace the more than twenty years old CAMAC based system. A new VME multi-parameter (presently up to 200 channels) data acquisition and control system has been developed and implemented at the Lund Ion Beam Analysis Facility (LIBAF). The system is based on the VX-511 Single Board Computer (SBC), acting as master with arbiter functionality and consists of standard VME modules like Analog to Digital Converters (ADC’s), Charge to Digital Converters (QDC’s), Time to Digital Converters (TDC’s), scaler’s, IO-cards, high voltage and waveform units. The modules have been specially selected to support all of the present detector systems in the laboratory, with the option of future expansion. Typically, the detector systems consist of silicon strip detectors, silicon drift detectors and scintillator detectors, for detection of charged particles, X-rays and γ-rays. The data flow of the raw data buffers out from the VME bus to the final storage place on a 16 terabyte network attached storage disc (NAS-disc) is described. The acquisition process, remotely controlled over one of the SBCs ethernet channels, is also discussed. The user interface is written in the Kmax software package, and is used to control the acquisition process as well as for advanced online and offline data analysis through a user-friendly graphical user interface (GUI). In this work the system implementation, layout and performance are presented. The user interface and possibilities for advanced offline analysis are also discussed and illustrated.

  17. 基于ZigBee技术的数据采集系统的设计%Design of data acquisition system based on ZigBee

    Institute of Scientific and Technical Information of China (English)

    杨惠

    2016-01-01

    As a short distance communication technology, ZigBee is a ideal data transmission method for wireless sensor networks for its low cost and power consumption. And the data acquisition system based on wireless sensor network is widely used in industry and agriculture. Based on ZigBee protocol, the data acquisition node, terminal node and the monitor software are designed and implemented, at the same time, the data transmission on the wireless sensor network is implemented on the network routing. The trusted security protocol based on LBlock algorithm is designed to achieve the security of data trans-mission. The experiment shows that the data acquisition system can be used to acquisition and monitor va-rious kind of data.%作为一种短距离通信技术,ZigBee以其低成本和低功耗成为无线传感器网络的一种理想数据传输方法。基于无线传感器网络的数据采集系统在工农业中有广泛的用途。基于ZigBee协议,设计并实现了无线传感器网络中的终端节点、数据采集节点和系统的监控软件,同时采用Zig-Bee协议在网络路由的基础上实现了传感器网络的组网和传输。为了保证数据参数的安全性,在无线传感器网络中采用LBlock算法实现受信任的安全协议。实验表明,该数据采集系统能够实时采集和监控多种信息数据。

  18. The Data Acquisition System for LZ

    CERN Document Server

    Druszkiewicz, Eryk

    2015-01-01

    The Data Acquisition System of the LZ experiment, the 10-tonne dark matter detector to be installed at the Sanford Underground Research Facility (SURF), will collect signals from 788 photomultiplier tubes (PMTs). Because the signals from the time projection chamber PMTs will be passed through dual-gain amplifiers, the DAQ system will collect waveforms from a total of 1276 channels, using custom built, 32-channel, FPGA-based digital signal processors. The appropriately conditioned signals will be digitized at 100 MHz with 14-bit resolution. Based on actual measurements with a small-scale prototype system, the LZ DAQ is expected to be able to handle a maximum sparsified data rate of ~1500 MB/s. During calibrations, it is estimated that only 33% of the system resources are utilized. The digital filters that are used for data selection operate with an aggregate throughput in excess of 595,000 MB/s. Data selection decisions are based on, for example, the amount of scintillation (S1) and photoluminescence S2 light,...

  19. Offline synchronization of data acquisition systems using system identification

    Science.gov (United States)

    Maes, K.; Reynders, E.; Rezayat, A.; Roeck, G. De; Lombaert, G.

    2016-10-01

    This paper presents a technique for offline time synchronization of data acquisition systems. The technique can be applied when real-time synchronization of data acquisition systems is impossible or not sufficiently accurate. It allows for accurate synchronization based on the acquired dynamic response of the structure only, without requiring a common response or the use of a trigger signal. The synchronization is performed using the results obtained from system identification, and assumes linear dynamic behavior of the structure and proportional damping of the structural modes. A demonstration for a laboratory experiment on a cantilever steel beam shows that the proposed methodology can be used for accurate time synchronization, resulting in a significant improvement of the accuracy of the identified mode shapes.

  20. 基于FPGA的电流采集系统设计%Design of Current Acquisition System Based on FPGA

    Institute of Scientific and Technical Information of China (English)

    刘日龙; 殷德奎; 赵晓科

    2011-01-01

    In atmospheric interference modulation system of vertical detection, this paper presents a current acquisition system design which is applied in space remote sensing instruments according to the stability of the scan mechanism of mirrors driven by oscillating motor in sounder. The peripheral circuit can work together harmoniously under the control of Field Programmable Gate Array(FPGA), and the output of current signals of oscillating motor can be sampled and transferred. Experimental result shows that the current waveform get by this system is consistent with theoretical analysis, and it has high stability.%在大气垂直探测仪千涉调制系统中,为满足摆动扫描电机驱动反射镜扫描时的稳定性要求,提出一种应用于空间遥感仪器的电流采集系统设计.在现场可编程门阵列控制下,使外围电路协同工作,实现对电机电流输出信号进行连续采样、存储及传输.实验结果表明,通过该系统采集获取的电流波形与理论分析相一致,并且具有较高的稳定性.

  1. Memory-Based Lexical Acquisition and Processing

    CERN Document Server

    Daelemans, W

    1994-01-01

    Current approaches to computational lexicology in language technology are knowledge-based (competence-oriented) and try to abstract away from specific formalisms, domains, and applications. This results in severe complexity, acquisition and reusability bottlenecks. As an alternative, we propose a particular performance-oriented approach to Natural Language Processing based on automatic memory-based learning of linguistic (lexical) tasks. The consequences of the approach for computational lexicology are discussed, and the application of the approach on a number of lexical acquisition and disambiguation tasks in phonology, morphology and syntax is described.

  2. Research of GPS-based data acquisition system%基于GPS的数据采集系统的研究

    Institute of Scientific and Technical Information of China (English)

    许辉; 王紫婷

    2012-01-01

    This paper studies the use of Global Positioning System GPS timing technology torealize synchronize data acquisition.Designing a kind of a DSP-based data acquisition system, synchronized by the GPS pulse per second under the data acquisition.Collection of data treated for their marked time and location labels and with USB 2.0 interface to realize realtime measurement data high-speed uploading whichprovides a convenient off-site data analysis and processing.%文中研究了利用全球定位系统GPS授时技术来实现同步数据采集。设计了一种基于DSP的数据采集系统,由GPS秒脉冲同步下进行数据采集。采集的数据经处理为其打上时间和地理位置标签并采用USB2.0接口来实现实时测量数据高速上传,为异地数据分析和处理提供了便利。

  3. Data Acquisition System for Quartz Crystal Microbalances

    Directory of Open Access Journals (Sweden)

    Kleber Romero Felizardo

    2006-02-01

    Full Text Available This work presents a data acquisition system used in a mass sensor: quartz crystal microbalance. This system reads the frequency of this sensor along the time and sends the collected data to the computer through a serial interface.

  4. IT-based Value Creation in Serial Acquisitions

    DEFF Research Database (Denmark)

    Henningsson, Stefan; Yetton, Philip

    2013-01-01

    The extant research on post-acquisition IT integration analyzes how acquirers realize IT-based value in individual acquisitions. However, serial acquirers make 60% of acquisitions. These acquisitions are not isolated events, but are components in growth-by-acquisition programs. To explain how...... serial acquirers realize IT-based value, we integrate and model the findings on individual acquisitions from the extant literature, and extend that model to explain the effects of sequential acquisitions in a growth-by-acquisition strategy. This extended model, drawing on the Resource-Based Theory...

  5. 基于物联网的智能电表采集系统设计%Data Acquisition System of Smart Meter Based on IoT

    Institute of Scientific and Technical Information of China (English)

    亢红波; 许宏科

    2015-01-01

    Aiming at the monitoring of the electric meter,a data acquisition system of smart meter based on Internet of Things is de-signed,which consists of smart electric meter nodes,data acquisition terminal equipment and host computer.As the key part of the sys-tem,data acquisition terminal equipment can accomplish data acquisition of electric meter by supporting Modbus protocol,which has a complete TCP/IP network protocol stack and provides API functions interface.The terminal can also realize bidirectional communication and remote control between networks.The system is suitable for the power management of industry,building automation,intelligent home and other environments,which has good practical prospect.%针对智能电表的监控,设计了一种基于物联网的电表数据采集系统,由智能电表节点、数据采集终端设备及监控上位机组成。数据采集终端设备作为系统核心部分,支持Modbus通信协议,并拥有完全独立的TCP/IP网络协议栈,提供 API函数接口,从而完成智能电表数据的现场采集,实现双向网络传输与远程操控。此系统可适用于工业环境、楼宇自动化及智能家居等多种不同环境下的能耗管理,具有良好的应用前景。

  6. CANape and LabVIEW-based data acquisition system built DCT%基于CANape与LabVIEW搭建DCT数据采集系统

    Institute of Scientific and Technical Information of China (English)

    李向兵

    2015-01-01

    本文以某国产自主湿式双离合自动变速箱(Wet Dual Cluth Transmission,WDCT)为研究对象,结合LabVIEW与CANape搭建DCT数据采集系统,为DCT产品开发和性能测试提供数据参考。%The paper took a domestic Wet Dual Cluth Transmission as research object and aimed to build a DCT data acquisition system based on CANape and LabVIEW to provide data reference for DCT product development and performance test.

  7. A web-based solution to visualize operational monitoring data in the Trigger and Data Acquisition system of the ATLAS experiment at the LHC

    CERN Document Server

    Avolio, Giuseppe; The ATLAS collaboration

    2017-01-01

    The Trigger and Data Acquisition (TDAQ) system of the ATLAS detector at the Large Hadron Collider at CERN is composed of a large number of distributed hardware and software components (about 3000 machines and more than 25000 applications) which, in a coordinated manner, provide the data-taking functionality of the overall system. During data taking runs, a huge flow of operational data is produced in order to constantly monitor the system and allow proper detection of anomalies or misbehaviours. In the ATLAS trigger and data acquisition system, operational data are archived and made available to applications by the P-BEAST (Persistent Back-End for the Atlas Information System of TDAQ) service, implementing a custom time-series database. The possibility to efficiently visualize both real-time and historical operational data is a great asset facilitating both online identification of problems and post-mortem analysis. This paper will present a web-based solution developed to achieve such a goal: the solution le...

  8. Acquisition Management for System of Systems: Requirement Evolution and Acquisition Strategy Planning

    Science.gov (United States)

    2013-01-29

    inefficiencies and warranted the pursuit of better systems engineering practices to encompass SoS principles. The recognition of the need for improved...important for providing acquisition groups with the means of performing acquisition, integration, and development decision-making in the mist of evolving

  9. Information management system breadboard data acquisition and control system.

    Science.gov (United States)

    Mallary, W. E.

    1972-01-01

    Description of a breadboard configuration of an advanced information management system based on requirements for high data rates and local and centralized computation for subsystems and experiments to be housed on a space station. The system is to contain a 10-megabit-per-second digital data bus, remote terminals with preprocessor capabilities, and a central multiprocessor. A concept definition is presented for the data acquisition and control system breadboard, and a detailed account is given of the operation of the bus control unit, the bus itself, and the remote acquisition and control unit. The data bus control unit is capable of operating under control of both its own test panel and the test processor. In either mode it is capable of both single- and multiple-message operation in that it can accept a block of data requests or update commands for transmission to the remote acquisition and control unit, which in turn is capable of three levels of data-handling complexity.

  10. Technology-based Mergers and Acquisitions

    DEFF Research Database (Denmark)

    Wang, Daojuan; Moini, Hamid

    2014-01-01

    The purpose of this chapter is to provide an updated review of what is known about the performance of technology-based mergers and acquisitions (TBM&As) and their determinants. This review brings together papers published from 1990 to 2012 in top-rated academic journals within nearly all fields...

  11. An intelligent data acquisition system for fluid mechanics research

    Science.gov (United States)

    Cantwell, E. R.; Zilliac, G.; Fukunishi, Y.

    1989-01-01

    This paper describes a novel data acquisition system for use with wind-tunnel probe-based measurements, which incorporates a degree of specific fluid dynamics knowledge into a simple expert system-like control program. The concept was developed with a rudimentary expert system coupled to a probe positioning mechanism operating in a small-scale research wind tunnel. The software consisted of two basic elements, a general-purpose data acquisition system and the rulebased control element to take and analyze data and supplying decisions as to where to measure, how many data points to take, and when to stop. The system was validated in an experiment involving a vortical flow field, showing that it was possible to increase the resolution of the experiment or, alternatively, reduce the total number of data points required, to achieve parity with the results of most conventional data acquisition approaches.

  12. 基于LabVIEW的人体生理参数采集系统设计%Design of LabVIEW-based acquisition system for human physiological parameters

    Institute of Scientific and Technical Information of China (English)

    张凌飞; 王圣禹; 郑黄敏; 王雪梅

    2014-01-01

    In order to enable people to understand their own physiological parameters in time,a human physiological pa-rameter acquisition system based on virtual instrument was designed. The method to compile system software with LabVIEW, the system hardware composed of sensor,alignment circuit and data acquisition card as well as the method to display the temper-ature,pulse wave and heart rate on the PC screen are described in this paper briefly. Experimental results shows that this sys-tem achieves good effect.%为了使人们能更加及时地了解自己的一些生理参数,设计了一种基于虚拟仪器的人体生理参数采集系统。在此简单叙述了利用LabVIEW编写系统软件,由传感器、调理电路和数据采集卡构成系统硬件,并将采集到体温、脉搏波和心率显示在PC机上的原理和方法。通过实践,系统达到了较好的效果。

  13. ARM-Based Data Acquisition and Storage System Design%基于ARM的数据采集存储系统设计

    Institute of Scientific and Technical Information of China (English)

    王红亮; 符多铎; 广威; 刘文怡

    2014-01-01

    介绍了一种基于ARM11的数据采集存储系统的设计原理和实现方法,以低功耗微处理器S3C6410为核心,并搭建嵌入式Linux系统平台来实现,其中数据采集模块主要包括信号调理电路、A/D转换和系统控制中心3个部分,数据存储模块由NAND Flash存储来实现,通过实验验证,本设计实现了数据实时监测,数据存储和数据回传等功能。%The paper introduces the basic principle and implementation of ARM-based data acquisition and storage system.S3C6410,low-power microprocessor,is the core,and the embedded Linux system platform is built to achieve.The data acquisition module includes three parts,which contain signal conditioning circuit,A/D converter,system control center,and the data storage module consists of NAND Flash storage.Through experiments,the design has finished real-time data monitoring,data storage and data backhaul and other functions.

  14. Data acquisition system issues for large experiments

    Science.gov (United States)

    Siskind, E. J.

    2007-09-01

    This talk consists of personal observations on two classes of data acquisition ("DAQ") systems for Silicon trackers in large experiments with which the author has been concerned over the last three or more years. The first half is a classic "lessons learned" recital based on experience with the high-level debug and configuration of the DAQ system for the GLAST LAT detector. The second half is concerned with a discussion of the promises and pitfalls of using modern (and future) generations of "system-on-a-chip" ("SOC") or "platform" field-programmable gate arrays ("FPGAs") in future large DAQ systems. The DAQ system pipeline for the 864k channels of Si tracker in the GLAST LAT consists of five tiers of hardware buffers which ultimately feed into the main memory of the (two-active-node) level-3 trigger processor farm. The data formats and buffer volumes of these tiers are briefly described, as well as the flow control employed between successive tiers. Lessons learned regarding data formats, buffer volumes, and flow control/data discard policy are discussed. The continued development of platform FPGAs containing large amounts of configurable logic fabric, embedded PowerPC hard processor cores, digital signal processing components, large volumes of on-chip buffer memory, and multi-gigabit serial I/O capability permits DAQ system designers to vastly increase the amount of data preprocessing that can be performed in parallel within the DAQ pipeline for detector systems in large experiments. The capabilities of some currently available FPGA families are reviewed, along with the prospects for next-generation families of announced, but not yet available, platform FPGAs. Some experience with an actual implementation is presented, and reconciliation between advertised and achievable specifications is attempted. The prospects for applying these components to space-borne Si tracker detectors are briefly discussed.

  15. Optimization of Hierarchical System for Data Acquisition

    Directory of Open Access Journals (Sweden)

    V. Novotny

    2011-04-01

    Full Text Available Television broadcasting over IP networks (IPTV is one of a number of network applications that are except of media distribution also interested in data acquisition from group of information resources of variable size. IP-TV uses Real-time Transport Protocol (RTP protocol for media streaming and RTP Control Protocol (RTCP protocol for session quality feedback. Other applications, for example sensor networks, have data acquisition as the main task. Current solutions have mostly problem with scalability - how to collect and process information from large amount of end nodes quickly and effectively? The article deals with optimization of hierarchical system of data acquisition. Problem is mathematically described, delay minima are searched and results are proved by simulations.

  16. Image acquisition system for a hospital enterprise

    Science.gov (United States)

    Moore, Stephen M.; Beecher, David E.

    1998-07-01

    Hospital enterprises are being created through mergers and acquisitions of existing hospitals. One area of interest in the PACS literature has been the integration of information systems and imaging systems. Hospital enterprises with multiple information and imaging systems provide new challenges to the integration task. This paper describes the requirements at the BJC Health System and a testbed system that is designed to acquire images from a number of different modalities and hospitals. This testbed system is integrated with Project Spectrum at BJC which is designed to provide a centralized clinical repository and a single desktop application for physician review of the patient chart (text, lab values, images).

  17. Investigation of High-Level Synthesis tools’ applicability to data acquisition systems design based on the CMS ECAL Data Concentrator Card example

    CERN Document Server

    HUSEJKO, Michal; RASTEIRO DA SILVA, Jose Carlos

    2015-01-01

    High-Level Synthesis (HLS) for Field-Programmable Logic Array (FPGA) programming is becoming a practical alternative to well-established VHDL and Verilog languages. This paper describes a case study in the use of HLS tools to design FPGA-based data acquisition systems (DAQ). We will present the implementation of the CERN CMS detector ECAL Data Concentrator Card (DCC) functionality in HLS and lessons learned from using HLS design flow.The DCC functionality and a definition of the initial system-level performance requirements (latency, bandwidth, and throughput) will be presented. We will describe how its packet processing control centric algorithm was implemented with VHDL and Verilog languages. We will then show how the HLS flow could speed up design-space exploration by providing loose coupling between functions interface design and functions algorithm implementation.We conclude with results of real-life hardware tests performed with the HLS flow-generated design with a DCC Tester system.

  18. Investigation of High-Level Synthesis tools’ applicability to data acquisition systems design based on the CMS ECAL Data Concentrator Card example

    Science.gov (United States)

    HUSEJKO, Michal; EVANS, John; RASTEIRO DA SILVA, Jose Carlos

    2015-12-01

    High-Level Synthesis (HLS) for Field-Programmable Logic Array (FPGA) programming is becoming a practical alternative to well-established VHDL and Verilog languages. This paper describes a case study in the use of HLS tools to design FPGA-based data acquisition systems (DAQ). We will present the implementation of the CERN CMS detector ECAL Data Concentrator Card (DCC) functionality in HLS and lessons learned from using HLS design flow. The DCC functionality and a definition of the initial system-level performance requirements (latency, bandwidth, and throughput) will be presented. We will describe how its packet processing control centric algorithm was implemented with VHDL and Verilog languages. We will then show how the HLS flow could speed up design-space exploration by providing loose coupling between functions interface design and functions algorithm implementation. We conclude with results of real-life hardware tests performed with the HLS flow-generated design with a DCC Tester system.

  19. Design of high temperature data acquisition system based on FPGA%基于FPGA的高温数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    刘纯; 吴凌云

    2012-01-01

      这是一个基于FPGA的高速耐高温数据采集系统,该系统采用FPGA作为控制器,采用Verilog语言控制时序,利用FPGA内部自带的RAM设计16位的FIFO,实现数据的缓冲存储,主要完成电平偏移、A/D转换控制、数据缓存FIFO三部分功能。系统所选器件都为耐高温低功耗芯片,适用于油田井下高温作业。仿真及实验测试结果显示,所设计的数据采集系统达到了预期的功能。%  This is a high temperature data acquisition system based on FPGA.It contains three functions of level migration,A/D switching control,data caching FIFO.Using Verilog hardware description language controls timing sequence.A 16-bit FIFO is designed to realize the data buffering by using the internal RAM in FPGA.The device used in this system are high temperature resistance,low power consumption chip,suitable for downhole high temperature operation.The simulation and experimental results show that the designed data acquisition system has good fuctions.

  20. Embedded data acquisition system with MDSPlus

    Energy Technology Data Exchange (ETDEWEB)

    Rajpal, Rachana, E-mail: rachana@ipr.res.in [Institute for Plasma Research, Gandhinagar, Gujarat (India); Patel, Jigneshkumar; Kumari, Praveena; Panchal, Vipul; Chattopadhyay, P.K.; Pujara, Harshad; Saxena, Y.C. [Institute for Plasma Research, Gandhinagar, Gujarat (India)

    2012-12-15

    This data acquisition system (DAS) is designed and developed to cater the increasing demand of Plasma Diagnostics for Aditya Tokamak as well as to support the basic physics research going on at Institute for Plasma Research. The main design criteria were to design a system with minimum resources and flexible to cater the needs of slow and fast diagnostic channels and can be easily integrated with the existing data acquisition system of Aditya Tokamak. The DAS is designed on embedded PC/104 platform. This is a multi channel system which supports standard features of commercially available DAS. The control and bus interface logic are implemented using Very High Speed Hardware Description Language (VHDL) on Complex Programmable Logic Device (CPLD). For Aditya Tokamak pulse experiment, the software application is designed such that the data is directly integrated to the MDSplus tree of Aditya DAS. The detailed hardware and software design, development and testing results will be discussed in the paper.

  1. The DISTO Data Acquisition System at SATURNE

    CERN Document Server

    Maggiora, A

    1997-01-01

    The DISTO collaboration has built a large-acceptance magnetic spectrometer designed to provide broad kinematic coverage of multi-particle final states produced in $pp$ scattering. The spectrometer has been installed in the polarized proton beam of the Saturne accelerator in Saclay to study polarization observables in the $\\vec{p} p \\to p K^{+} \\vec{Y}$ ($Y = \\Lambda, and $\\rho$) in $pp$ collisions. The data acquisition system is based on a VME 68030 CPU running the OS/9 operating system, housed in a single VME crate together with the CAMAC interface, the triple port ECL memories, and four RISC R3000 CPU. The digitization of signals from the detectors is made by PCOS III and FERA front-end electronics. Data of several events belonging to a single Saturne extraction are stored in VME triple-port ECL memories using a hardwired fast sequencer. The buffer, optionally filtered by the RISC R3000 CPU, is recorded on a DLT cassette by DAQ CPU using the on-board SCSI interface during the acceleration cycle. Two UNIX wo...

  2. Achieving Better Buying Power through Acquisition of Open Architecture Software Systems for Web-Based and Mobile Devices

    Science.gov (United States)

    2015-05-01

    NAWCWD .•. 1076Views ~ GEOINT App Stor ... 339Views 62 Launches ~ Avenza PDF Maps 904 Views Hi@i ’--Se_a_rc_h _____ __ First Responder Apps E...acquisition of OA Web/mobile software components  Franchising  Enterprise licensing  Metered usage  Advertising supported  Subscription  Free

  3. Performance confirmation data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    McAffee, D.A.; Raczka, N.T. [Yucca Mountain Project, Las Vegas, NV (United States)

    1997-12-31

    As part of the Viability Assessment (VA) work, this QAP-3-9 document presents and evaluates a comprehensive set of viable concepts for collecting Performance Confirmation (PC) related data. The concepts include: monitoring subsurface repository air temperatures, humidity levels and gaseous emissions via the subsurface ventilation systems, and monitoring the repository geo-technical parameters and rock mass from bore-holes located along the perimeter main drifts and throughout a series of human-rated Observation Drifts to be located in a plane 25 meters above the plane of the emplacement drifts. A key element of this document is the development and analysis of a purposed multi-purpose Remote Inspection Gantry that would provide direct, real-time visual, thermal, and radiological monitoring of conditions inside operational emplacement drifts and close-up observations of in-situ Waste Packages. Preliminary finite-element analyses are presented that indicate the technological feasibility of operating an inspection gantry inside the operational emplacement drifts for short inspection missions lasting 2--3 hours. Overall reliability, availability, and maintainability of the PC data collection concepts are discussed. Preliminary concepts for PC data collection network are also provided.

  4. 基于FPGA的高速核信号采集系统设计%The Design of High- speed Nuclear Signal Acquisition System Based on FPGA

    Institute of Scientific and Technical Information of China (English)

    王琳; 庹先国; 王磊; 杨国山; 曲德成; 潘洁; 林木; 肖魏峰

    2012-01-01

    描述了一种基于现场可编程逻辑阵列(FPGA)的高速核信号采集系统的设计方案.FPGA作为控制核心,实现对高速Analog - to - Digital Converter(ADC)和Universal Serial Bus( USB)的逻辑控制和数字信号的采样、滤波、甄别、存储、传输处理,并使用异步First In First Out(FIFO)实现ADC数据采集模块和USB数据传输模块2个不同时钟域之间的数据传输,提高数据的吞吐率.最后利用上位机软件进行数据处理和绘图显示.测试结果表明,该系统能够实现核信号的实时、高效采集.%A high - speed unclear signal acquisition system is introduced based on the field - programmable logic array ( FPGA). FPGA, as control core, realizes the logical control of the high - speed Analog - to - Digital Converter(ADC) and Universal Serial Bus( USB ) , and performs sampling, filtering, screening, storage and transmission of digital signal. And asynchronous First In First Out (FIFO) is used for data transmission in different clock domains between the ADC data acquisition module and the USB data transmission module to increase data throughput. Finally, PC software is used for data processing and display. The test results show that the system can achieve real - time efficient nuclear signal acquisition.

  5. The dance of wireless data acquisition system based on electronic gyroscope%基于电子陀螺的舞姿无线采集系统

    Institute of Scientific and Technical Information of China (English)

    郑怡文; 彭超; 白云晖; 赵文宏

    2015-01-01

    本文设计实现了一种基于电子陀螺仪对舞蹈动作进行无线采集和评价的系统,利用多节点网络技术同时采集各肢体的加速度、角度信息,得到实时的位移坐标和姿态角度。该系统对舞蹈动作采集精度较准确,可以如实的反映舞蹈动作中肢体运动情况,为主观评价提供客观参数依据。%In this paper,the design and implementation of a system based on electronic gyroscope on the dance moves for wireless acquisition and evaluation,acceleration,angle of each limb collected simultaneously by using a multi node network technology information,get the displacement coordinate and attitude angle in real time.The system of dance movements acquisition accuracy accurately,can reflect the movement of limbs dance movements,provide objective parameter for the subjective evaluation basis.

  6. Augmented tracking and acquisition system for GBL satellite illumination

    Science.gov (United States)

    Brodsky, Aaron; Goodrich, Alan; Lawson, David G.; Holm, Richard W.

    1991-08-01

    The Augmented Tracking and Acquisition System (ATAS) provides the tracking acquisition aids, line-of-sight stabilization, and active closed-loop beam centering functions at two ground-based laser tracking sites for the Relay Mirror Experiment (RME). Simultaneous, steady illumination of the RME spacecraft with both ground beacons allows for successful beam relay between the two sites off of the orbiting mirror. Described in this paper is an overview of the functions, control system architectures, major subsystem components (steering mirrors and sensors), and mission operation of the ATAS subsystems. A brief discussion of ATAS evolution is included to show that versatility is needed for success.

  7. A High-Resolution TDC-Based Board for a Fully Digital Trigger and Data Acquisition System in the NA62 Experiment at CERN

    Science.gov (United States)

    Pedreschi, Elena; Angelucci, Bruno; Avanzini, Carlo; Galeotti, Stefano; Lamanna, Gianluca; Magazzu, Guido; Pinzino, Jacopo; Piandani, Roberto; Sozzi, Marco; Spinella, Franco; Venditti, Stefano

    2015-06-01

    A Time to Digital Converter (TDC) based system, to be used for most sub-detectors in the high-flux rare-decay experiment NA62 at CERN SPS, was built as part of the NA62 fully digital Trigger and Data AcQuisition system (TDAQ), in which the TDC Board (TDCB) and a general-purpose motherboard (TEL62) will play a fundamental role. While TDCBs, housing four High Performance Time to Digital Converters (HPTDC), measure hit times from sub-detectors, the motherboard processes and stores them in a buffer, produces trigger primitives from different detectors and extracts only data related to the lowest trigger level decision, once this is taken on the basis of the trigger primitives themselves. The features of the TDCB board developed by the Pisa NA62 group are extensively discussed and performance data is presented in order to show its compliance with the experiment requirements.

  8. A high-resolution TDC-based board for a fully digital trigger and data acquisition system in the NA62 experiment at CERN

    CERN Document Server

    Pedreschi, Elena; Avanzini, Carlo; Galeotti, Stefano; Lamanna, Gianluca; Magazzu, Guido; Pinzino, Jacopo; Piandani, Roberto; Sozzi, Marco; Spinella, Franco; Venditti, Stefano

    2015-01-01

    A Time to Digital Converter (TDC) based system, to be used for most sub-detectors in the high-flux rare-decay experiment NA62 at CERN SPS, was built as part of the NA62 fully digital Trigger and Data AcQuisition system (TDAQ), in which the TDC Board (TDCB) and a general-purpose motherboard (TEL62) will play a fundamental role. While TDCBs, housing four High Performance Time to Digital Converters (HPTDC), measure hit times from sub-detectors, the motherboard processes and stores them in a buffer, produces trigger primitives from different detectors and extracts only data related to the lowest trigger level decision, once this is taken on the basis of the trigger primitives themselves. The features of the TDCB board developed by the Pisa NA62 group are extensively discussed and performance data is presented in order to show its compliance with the experiment requirements.

  9. Multimodal Image Acquisition System Based on Finger Correlation Features%基于指部关联特征的多模态图像采集系统

    Institute of Scientific and Technical Information of China (English)

    梁爱华; 袁家政; 和青芳; 何娟

    2014-01-01

    To avoid the low security and instability of single biometric authentication,a multimodal image acquisition system based on finger features is designed to realize the time-sharing collecting the fingerprint,finger knuckle and finger-vein images through a dual-band camera. Fingerprint and finger knuckle images are acquired by non-contact reflection way. The single light source and reflection mirror is adopted while collecting finger-vein image. The near-infrared LED light source position and angle can be adjusted according to the finger-vein image quality assessment. The weights are adjusted based on the information contents of three features. Actual test results show that multimodal image acquisition system has distinctive advantages compared to single-mode image acquisition system,which was based on fingerprint or finger-vein. In proposed system, authentication passing rate can reach 99. 1% and false accept rate is 0. 000 1% without rejection registration.%针对基于单个生物特征的身份认证安全性和稳定性不足的问题,设计了基于指部关联特征的多模态图像采集系统,采用单个双波段摄像头分时采集同一根手指的指纹、指节纹和指静脉图像。指纹和指节纹采用非接触反射采集方式,指静脉采用单侧近红外光源与反射镜面相结合的透射采集方式,并根据静脉图像质量评价动态调控光源,根据特征点信息量动态调整各个特征的权重。实验结果表明,该多模态采集系统在认证通过率、误识率和拒登率等指标都优于指纹或指静脉的单模态采集系统,认证通过率达到99.1%,误识率为0.0001%,不存在拒登现象。

  10. Handbook for Training Management during System Acquisition.

    Science.gov (United States)

    1986-04-01

    separate training contracts would have to be renegoti- ated, orders amended, students returned home, hotel reserva- tions changed, etc. Although this issue...HQ USAF/ LEYE , 7 February 1980. 24. US Department of the Air Force: Headquarters US Air Force. AFR 800-12: Acquisition of Support Equipment. Washington...AFR 800-21: Interim Contractor Support for Systems and Equipment. Washington, DC: HQ USAF/ LEYE , 26 September 1978. 27. US Department of the Air Force

  11. A simulation of data acquisition system for SSC experiments

    Energy Technology Data Exchange (ETDEWEB)

    Watase, Y.; Ikeda, H. [National Laboratory for High Energy Physics (KEK), Tsukuba, Ibaraki (Japan)

    1989-04-01

    A simulation on some parts of the data acquisition system was performed using a general purpose simulation language GPSS. Several results of the simulation are discussed for the data acquisition system for the SSC experiment.

  12. Design of Data Acquisition System Based on iOS and SensorTag%基于iOS和SensorTag的数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    胡江; 王阳

    2016-01-01

    Data acquisition system is one of critical systems for wearable terminal. In this regard , this paper presented an acquisition system based on iOS and SensorTag , which is integrated with Bluetooth 4.0 and 6 kinds of sensors. The designed system could realize the collection of environment ’s temperature and humidity, the directions, the infrared temperature and other parameters. The communication process with Bluetooth and how to calculate the sensor’s data were focused in this study, which were the design points of the system. Tested results showed that the data collected was correct and meet the design requirements.%传感器数据采集是可穿戴终端设计是否实用的关键系统。本文选取集成了低功耗蓝牙和6种传感器的SensorTag作为终端,在iOS系统的基础上开发出能实现环境温湿度、红外温度以及方向等参数的采集系统。系统设计过程中,主要使用UIKit、CoreBluetooth等框架,重点给出低功耗蓝牙通信和传感数据计算的设计要点。测试结果表明,所采集的各项数据正确,符合设计要求。

  13. Thomson Scattering Diagnostic Data Acquisition Systems for Modern Fusion Systems

    Energy Technology Data Exchange (ETDEWEB)

    Ivanenko, S.V.; Khilchenko, A.D. [Budker Institute of Nuclear Physics and Novosibirsk State University, Novosibirsk (Russian Federation); Ovchar, V.K.; Zubarev, P.V.; Kvashnin, A.N.; Puryga, E.A.; Ivanova, A.A.; Kotelnikov, A.I. [Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)

    2015-07-01

    Uniquely designed complex data acquisition system for Thomson scattering diagnostic was developed. It allows recording short duration (3-5 ns) scattered pulses with 2 GHz sampling rate and 10-bit total resolution in oscilloscope mode. The system consists up to 48 photo detector modules with 0- 200 MHz bandwidth, 1-48 simultaneously sampling ADC modules and synchronization subsystem. The photo detector modules are based on avalanche photodiodes (APD) and ultra-low noise trans-impedance amplifiers. ADC modules include fast analog to digital converters and digital units based on the FPGA (Field- Programmable Gate Array) for data processing and storage. The synchronization subsystem is used to form triggering pulses and to organize the simultaneously mode of ADC modules operation. (authors)

  14. 基于NI6009的ECG采集系统设计%Design of ECG signal acquisition system based on NI6009

    Institute of Scientific and Technical Information of China (English)

    胡晓; 杜亮; 蔡燕玲

    2012-01-01

    为了简单而有效地采集ECG信号,文章介绍一种使用NI6009数据采集卡的ECG信号采集系统.该系统由传感器、预处理硬件电路、采集卡和计算机4个部分组成.由NI6009数据采集卡实现外部硬件电路与计算机内部分析系统的互联.通过NI6009电脑能够灵活地选择ECG信号的采集通道、调整采样频率和量化比特数.通过ECG信号采集实验表明,该系统是一个简单有效的ECG信号采集系统.%In order to effectively and simply acquire ECG signal,this paper introduced an acquisition system based on NI6009 acquisition card.The system was composed of ECG sensor,preprocessing hardware circuit,NI6009 and computer.It was by NI6009 that ECG analysis system within computer was able to interconnect with hardware circuit outside the computer.In ECG signal's analysis system,it was flexible to choose acquiring ECG signal's channel and to adjust sampling frequency and quantization bit number through NI6009.During ECG signal was acquired,this scheme can easily achieve better effect.

  15. Implementation of High Speed Distributed Data Acquisition System

    Science.gov (United States)

    Raju, Anju P.; Sekhar, Ambika

    2012-09-01

    This paper introduces a high speed distributed data acquisition system based on a field programmable gate array (FPGA). The aim is to develop a "distributed" data acquisition interface. The development of instruments such as personal computers and engineering workstations based on "standard" platforms is the motivation behind this effort. Using standard platforms as the controlling unit allows independence in hardware from a particular vendor and hardware platform. The distributed approach also has advantages from a functional point of view: acquisition resources become available to multiple instruments; the acquisition front-end can be physically remote from the rest of the instrument. High speed data acquisition system transmits data faster to a remote computer system through Ethernet interface. The data is acquired through 16 analog input channels. The input data commands are multiplexed and digitized and then the data is stored in 1K buffer for each input channel. The main control unit in this design is the 16 bit processor implemented in the FPGA. This 16 bit processor is used to set up and initialize the data source and the Ethernet controller, as well as control the flow of data from the memory element to the NIC. Using this processor we can initialize and control the different configuration registers in the Ethernet controller in a easy manner. Then these data packets are sending to the remote PC through the Ethernet interface. The main advantages of the using FPGA as standard platform are its flexibility, low power consumption, short design duration, fast time to market, programmability and high density. The main advantages of using Ethernet controller AX88796 over others are its non PCI interface, the presence of embedded SRAM where transmit and reception buffers are located and high-performance SRAM-like interface. The paper introduces the implementation of the distributed data acquisition using FPGA by VHDL. The main advantages of this system are high

  16. AZ-101 Mixer Pump Demonstration Data Acquisition System and Gamma Cart Data Acquisition Control System Software Configuration Management Plan

    Energy Technology Data Exchange (ETDEWEB)

    WHITE, D.A.

    1999-12-29

    This Software Configuration Management Plan (SCMP) provides the instructions for change control of the AZ1101 Mixer Pump Demonstration Data Acquisition System (DAS) and the Sludge Mobilization Cart (Gamma Cart) Data Acquisition and Control System (DACS).

  17. Context-specific comparison of sleep acquisition systems in Drosophila

    Directory of Open Access Journals (Sweden)

    David S. Garbe

    2015-11-01

    Full Text Available Sleep is conserved across phyla and can be measured through electrophysiological or behavioral characteristics. The fruit fly, Drosophila melanogaster, provides an excellent model for investigating the genetic and neural mechanisms that regulate sleep. Multiple systems exist for measuring fly activity, including video analysis and single-beam (SB or multi-beam (MB infrared (IR-based monitoring. In this study, we compare multiple sleep parameters of individual flies using a custom-built video-based acquisition system, and commercially available SB- or MB-IR acquisition systems. We report that all three monitoring systems appear sufficiently sensitive to detect changes in sleep duration associated with diet, age, and mating status. Our data also demonstrate that MB-IR detection appeared more sensitive than the SB-IR for detecting baseline nuances in sleep architecture, while architectural changes associated with varying life-history and environment were generally detected across all acquisition types. Finally, video recording of flies in an arena allowed us to measure the effect of ambient environment on sleep. These experiments demonstrate a robust effect of arena shape and size as well as light levels on sleep duration and architecture, and highlighting the versatility of tracking-based sleep acquisition. These findings provide insight into the context-specific basis for choosing between Drosophila sleep acquisition systems, describe a novel cost-effective system for video tracking, and characterize sleep analysis using the MB-IR sleep analysis. Further, we describe a modified dark-place preference sleep assay using video tracking, confirming that flies prefer to sleep in dark locations.

  18. A Web-based Solution to Visualize Operational Monitoring Data in the Trigger and Data Acquisition System of the ATLAS Experiment at the LHC

    CERN Document Server

    Avolio, Giuseppe; The ATLAS collaboration; Lehmann Miotto, Giovanna; Soloviev, Igor

    2016-01-01

    The Trigger and Data Acquisition (TDAQ) system of the ATLAS detector at the Large Hadron Collider (LHC) at CERN is composed of a large number of distributed hardware and software components (about 3000 machines and more than 25000 applications) which, in a coordinated manner, provide the data-taking functionality of the overall system. During data taking runs, a huge flow of operational data is produced in order to constantly monitor the system and allow proper detection of anomalies or misbehaviors. In the ATLAS TDAQ system, operational data are archived and made available to applications by the P-Beast (Persistent Back-End for the Atlas Information System of TDAQ) service, implementing a custom time-series database. The possibility to efficiently visualize both real-time and historical operational data is a great asset for the online identification of problems and for any post-mortem analysis. This paper will present a web-based solution developed to achieve such a goal: the solution leverages the flexibili...

  19. A micro-TCA based data acquisition system for the Triple-GEM detectors for the upgrade of the CMS forward muon spectrometer

    CERN Document Server

    Lenzi, Thomas

    2016-01-01

    We will present the electronic and DAQ system being developed for TripleGEM detectors which will be installed in the CMS muon spectrometer. The microTCA system uses an Advanced Mezzanine Card equipped with an FPGA and the Versatile Link with the GBT chipset to link the front and back-end. On the detector an FPGA mezzanine board, the OptoHybrid, has to collect the data from the detector readout chips to transmit them optically to the microTCA boards using the GBT protocol. We will describe the hardware architecture, report on the status of the developments, and present results obtained with the system.In this contribution we will report on the progress of the design of the electronic readout and data acquisition (DAQ) system being developed for Triple-GEM detectors which will be installed in the forward region (1.5 < eta < 2.2) of the CMS muon spectrometer during the 2nd long shutdown of the LHC, planed for the period 2018-2019. The architecture of the Triple-GEM readout system is based on the use of th...

  20. Data acquisition system for BLM at NSRL

    Science.gov (United States)

    Gong, Guanghua; Li, Yuxiong; Cui, Yonggang; Li, Juexin; Li, Weiming; Shao, Beibei

    2003-06-01

    A Beam Loss Monitoring (BLM) System has been built up for the 800 MeV storage ring in National Synchrotron Radiation Laboratory. It has helped to resolve some problems about beam lifetime. This paper introduces the data acquisition system of BLM. It has a counter whose counting rate is higher than 10 MHz. Furthermore, this counter is a free running one that will never lose any pulse when it is being read or written. This DAQ system is composed of 14 front-ends and a console connected via CAN bus. The intensity, distribution and time information of the beam loss can be offered by this system. This BLM system is helpful for machine study and operation.

  1. Development of the OASIS acquisition system; L`evolution du systeme d`acquisition OASIS

    Energy Technology Data Exchange (ETDEWEB)

    Douet, R. [Services Techniques, Inst. de Physique Nucleaire, Paris-11 Univ., 91 - Orsay (France)

    1999-11-01

    OASIS is a general purpose data acquisition system built at IPN Orsay, which has been developed around UNIX and VME real time processors. This system can be used to acquire, process, store and display physics data. New OASIS is also used to process event data tapes coming from experiments and has been connected to the analysis software at IPN. (author)

  2. Reducing acquisition risk through integrated systems of systems engineering

    Science.gov (United States)

    Gross, Andrew; Hobson, Brian; Bouwens, Christina

    2016-05-01

    In the fall of 2015, the Joint Staff J7 (JS J7) sponsored the Bold Quest (BQ) 15.2 event and conducted planning and coordination to combine this event into a joint event with the Army Warfighting Assessment (AWA) 16.1 sponsored by the U.S. Army. This multipurpose event combined a Joint/Coalition exercise (JS J7) with components of testing, training, and experimentation required by the Army. In support of Assistant Secretary of the Army for Acquisition, Logistics, and Technology (ASA(ALT)) System of Systems Engineering and Integration (SoSE&I), Always On-On Demand (AO-OD) used a system of systems (SoS) engineering approach to develop a live, virtual, constructive distributed environment (LVC-DE) to support risk mitigation utilizing this complex and challenging exercise environment for a system preparing to enter limited user test (LUT). AO-OD executed a requirements-based SoS engineering process starting with user needs and objectives from Army Integrated Air and Missile Defense (AIAMD), Patriot units, Coalition Intelligence, Surveillance and Reconnaissance (CISR), Focused End State 4 (FES4) Mission Command (MC) Interoperability with Unified Action Partners (UAP), and Mission Partner Environment (MPE) Integration and Training, Tactics and Procedures (TTP) assessment. The SoS engineering process decomposed the common operational, analytical, and technical requirements, while utilizing the Institute of Electrical and Electronics Engineers (IEEE) Distributed Simulation Engineering and Execution Process (DSEEP) to provide structured accountability for the integration and execution of the AO-OD LVC-DE. As a result of this process implementation, AO-OD successfully planned for, prepared, and executed a distributed simulation support environment that responsively satisfied user needs and objectives, demonstrating the viability of an LVC-DE environment to support multiple user objectives and support risk mitigation activities for systems in the acquisition process.

  3. Integrated data acquisition system for coastal research vessel

    Digital Repository Service at National Institute of Oceanography (India)

    Desai, R.G.P.; Desa, E.

    An integrated data acquisition system using personal computers interconnectEd. by ARCNET local area network to log data from shipboard equipment and sensors is described. Each data acquisition node sends its data to a central computer which in turn...

  4. Human Robotic Systems (HRS): Robotic ISRU Acquisition Element

    Data.gov (United States)

    National Aeronautics and Space Administration — During 2014, the Robotic ISRU Resource Acquisition project element will develop two technologies:Exploration Ground Data Systems (xGDS)Sample Acquisition on...

  5. Development and Integration of a Data Acquisition System for SST-1 Phase-1 Plasma Diagnostics

    Institute of Scientific and Technical Information of China (English)

    Amit K SRIVASTAVA; Manika SHARMA; Imran MANSURI; Atish SHARMA; Tushar RAVAL; Subrata PRADHAN

    2012-01-01

    Long pulse (of the order of 1000 s or more) SST-1 tokamak experiments demand a data acquisition system that is capable of acquiring data from various diagnostics channels without losing useful data (and hence physics information) while avoiding unnecessary generation of a large volume data. SST-1 Phase-1 tokamak operation has been envisaged with data acquisition of several essential diagnostics channels. These channels demand data acquisition at a sampling rate ranging from 1 kilo samples per second (KSPS) to 1 mega samples per second (MSPS). Considering the technical characteristics and requirements of the diagnostics, a data acquisition system based on PXI and CAMAC has been developed for SST-1 plasma diagnostics. Both these data acquisition systems are scalable. Present data acquisition needs involving slow plasma diagnostics are catered by the PXI based data acquisition system. On the other hand, CAMAC data acquisition hardware meets all requirements of the SST-1 Phase-1 fast plasma diagnostics channels. A graphical user interface for both data acquisition systems (PXI and CAMAC) has been developed using LabVIEW application development software. The collected data on the local hard disk are directly streaming to the central server through a dedicated network for post-shot data analysis. This paper describes the development and integration of the data acquisition system for SST-1 Phase-1 plasma diagnostics. The integrated testing of the developed data acquisition system has been performed using SST-1 central control and diagnostics signal conditioning units. In the absence of plasma shots, the integrated testing of the data acquisition system for the initial diagnostics of SST-1 Phase-1 operation has been performed with simulated physical signals. The primary engineering objective of this integrated testing is to validate the performance of the developed data acquisition system under simulated conditions close to that of actual tokamak operation. The data

  6. Data acquisition and instrument control system for neutron spectrometers

    Science.gov (United States)

    Naik, S. S.; Kotwal, Ismat; Chandak, R. M.; Gaonkar, V. G.

    2004-08-01

    A personal computer (PC)-based data acquisition and instrument control system has been developed for neutron spectrometers in Dhruva reactor hall and Guide Tube laboratory. Efforts have been made to make the system versatile so that it can be used for controlling various neutron spectrometers using single end-on detector in step scan mode. Commercially available PC add-on cards have been used for input--output and timer-counter operations. An interface card and DC motor driver card have been developed indigenously. Software for the system has been written in Visual C++ language using MS Windows operating system. This data acquisition and instrument control system is successfully controlling four spectrometers at Dhruva reactor.

  7. Data acquisition and instrument control system for neutron spectrometers

    Indian Academy of Sciences (India)

    S S Naik; Ismat Kotwal; R M Chandak; V G Gaonkar

    2004-08-01

    A personal computer (PC)-based data acquisition and instrument control system has been developed for neutron spectrometers in Dhruva reactor hall and Guide Tube laboratory. Efforts have been made to make the system versatile so that it can be used for controlling various neutron spectrometers using single end-on detector in step scan mode. Commercially available PC add-on cards have been used for input–output and timer-counter operations. An interface card and DC motor driver card have been developed indigenously. Software for the system has been written in Visual C++ language using MS Windows operating system. This data acquisition and instrument control system is successfully controlling four spectrometers at Dhruva reactor.

  8. 基于掌上电脑的数据采集系统的开发%Development of data acquisition system based on personal digital assistant

    Institute of Scientific and Technical Information of China (English)

    陈坤彦; 赵炬红

    2016-01-01

    现代计算机技术、微电子技术、通信技术的飞速发展,使汽车电子和交通的发展出现了新的发展趋势.针对汽车的智能化、交通的数字化,开发了掌上电脑的数据采集软件,提出了一套高效实用的通信协议,攻克了Windows CE下面的动态连接库和多线程技术,开发出了一套实用的基于串口的通信模块;解决了智能化数字温度传感器DS18B20 的使用问题,并采用AT89C51 单片机建立了单片机温度信号数据采集系统.%With the rapid development of the computer,microelectronic and communication technologe,the automobile electronics and transportation have appeared new development trends. The data acquisition software based on personal digital as-sistant was developed for the intelligent automobile and digital transportation. A set of efficient and practical communication pro-tocol is provided to overcome the dynamic link library and multithreading technology in Windows CE. A set of practical commu-nication module based on serial port was developed to solve the usage problem of the intelligent digital temperature sensor DS18B20. The temperature signal data acquisition system for SCM was established with SCM AT89C51.

  9. 基于SOPC的视频采集处理系统设计%Design of Video Acquisition and Processing System Based on SOPC

    Institute of Scientific and Technical Information of China (English)

    赵擎天; 尉广军; 姚义

    2011-01-01

    针对某型导弹指令检测系统的需求,设计了基于SOPC (system on a programmable chip)的视频采集处理系统.本系统通过装备预留的视频采集口进行视频采集,然后对采集到的视频进行弹标的提取,并进行视频压缩存储以便实现视频的回放.重点介绍了基于SOPC的视频采集系统设计方案和图像预处理算法的FPGA实现.经过仿真分析,设计的系统可以实现视频采集功能,并能够实时地提取弹标.%According to requirements of instruction detection system of certain missile, a video acquisition and processing system is designed based on SOPC (system on a programmable chip). The system collects video from reserved ports of the equipment, then distills the information of the missile target from the collected videos, and finally compresses it to store to realize the video playback. The design scheme of the video collection system is mainly introduced based on the SOPC and the method of image preprocessing algorithm for FPGA implementation. Simulation verifies that the designed system c realize video collection function and real-time extract the information of the missile target.

  10. A Probe into Reform of Rural Homestead Acquisition System

    Institute of Scientific and Technical Information of China (English)

    Jun; TAN

    2013-01-01

    Using the methods of literature research,normative analysis,and empirical analysis,this study is intended to analyze the acquisition system of homestead in rural area of China.By adopting questionnaire survey and face-to-face interview,this study explores the problems of current homestead acquisition system and the dilemma of homestead management.The results indicate that homestead acquisition reform is the key aspect to the homestead management system reform.A new homestead acquisition system,which includes primitive acquisition,inheritance acquisition,and supporting system,is suggested in this study.The findings of this study will provide important policy implications for rural homestead system reform.The new homestead acquisition system could guarantee the farmers’property right and help improve social justice and rational utilization of nature resources.

  11. SeaBuoySoft – an On-line Automated Windows based Ocean Wave height Data Acquisition and Analysis System for Coastal Field’s Data Collection

    Directory of Open Access Journals (Sweden)

    P.H.Tarudkar

    2014-12-01

    Full Text Available Measurement of various hydraulic parameters such as wave heights for the research and the practical purpose in the coastal fields is one of the critical and challenging but equally important criteria in the field of ocean engineering for the design and the development of hydraulic structures such as construction of sea walls, break waters, oil jetties, fisheries harbors, all other structures, and the ships maneuvering, embankments, berthing on jetties. This paper elucidates the development of “SeaBuoySoft online software system for coastal field‟s wave height data collection” for the coastal application work. The system could be installed along with the associated hardware such as a Digital Waverider Receiver unit and a Waverider Buoy at the shore. The ocean wave height data, transmitted by wave rider buoy installed in the shallow/offshore waters of sea is received by the digital waverider receiver unit and it is interfaced to the SeaBuoySoft software. The design and development of the software system has been worked out in-house at Central Water and Power Research Station, Pune, India. The software has been developed as a Windows based standalone version and is unique of its kind for the reception of real time ocean wave height data, it takes care of its local storage of wave height data for its further analysis work as and when required. The system acquires real time ocean wave height data round the clock requiring no operator intervention during data acquisition process on site.

  12. An Effective 3D Ear Acquisition System.

    Directory of Open Access Journals (Sweden)

    Yahui Liu

    Full Text Available The human ear is a new feature in biometrics that has several merits over the more common face, fingerprint and iris biometrics. It can be easily captured from a distance without a fully cooperative subject. Also, the ear has a relatively stable structure that does not change much with the age and facial expressions. In this paper, we present a novel method of 3D ear acquisition system by using triangulation imaging principle, and the experiment results show that this design is efficient and can be used for ear recognition.

  13. An Effective 3D Ear Acquisition System.

    Science.gov (United States)

    Liu, Yahui; Lu, Guangming; Zhang, David

    2015-01-01

    The human ear is a new feature in biometrics that has several merits over the more common face, fingerprint and iris biometrics. It can be easily captured from a distance without a fully cooperative subject. Also, the ear has a relatively stable structure that does not change much with the age and facial expressions. In this paper, we present a novel method of 3D ear acquisition system by using triangulation imaging principle, and the experiment results show that this design is efficient and can be used for ear recognition.

  14. Underground Data Acquisition and Telemetry System

    Science.gov (United States)

    1977-02-28

    c~ LEYE ~ DNA 4459F SUNDERGROUND DATA ACQUISITION f AND TELEMETRY SYSTEM SDEVELCO, Inc. S404 Tasman Drive Sunnyvale, California 94086 fr 28 February...length of about 21-1/8 inches (54 cm) and are preloaded to 150,000 pounds (667,200 newtons ) by 12 half-inch (1.27 cm) alloy steel bolts. Indi- vidual... newtons ) and each bolt may experience greater relative forces 4-5 4EMU= during shock. However, any two electronics modules are limited to an over- all

  15. War-gaming application for future space systems acquisition

    Science.gov (United States)

    Nguyen, Tien M.; Guillen, Andy T.

    2016-05-01

    Recently the U.S. Department of Defense (DOD) released the Defense Innovation Initiative (DII) [1] to focus DOD on five key aspects; Aspect #1: Recruit talented and innovative people, Aspect #2: Reinvigorate war-gaming, Aspect #3: Initiate long-range research and development programs, Aspect #4: Make DOD practices more innovative, and Aspect #5: Advance technology and new operational concepts. Per DII instruction, this paper concentrates on Aspect #2 and Aspect #4 by reinvigorating the war-gaming effort with a focus on an innovative approach for developing the optimum Program and Technical Baselines (PTBs) and their corresponding optimum acquisition strategies for acquiring future space systems. The paper describes a unified approach for applying the war-gaming concept for future DOD acquisition of space systems. The proposed approach includes a Unified Game-based Acquisition Framework (UGAF) and an Advanced Game-Based Mathematical Framework (AGMF) using Bayesian war-gaming engines to optimize PTB solutions and select the corresponding optimum acquisition strategies for acquiring a space system. The framework defines the action space for all players with a complete description of the elements associated with the games, including Department of Defense Acquisition Authority (DAA), stakeholders, warfighters, and potential contractors, War-Gaming Engines (WGEs) played by DAA, WGEs played by Contractor (KTR), and the players' Payoff and Cost functions (PCFs). The AGMF presented here addresses both complete and incomplete information cases. The proposed framework provides a recipe for the DAA and USAF-Space and Missile Systems Center (SMC) to acquire future space systems optimally.

  16. Identifying Governance Best Practices in Systems-of-Systems Acquisition

    Science.gov (United States)

    2014-02-08

    Hellfire missiles and a 30mm cannon (“Marines to Deploy,” 2010). Some kits also carried a ramp-mounted release system for “Gunslinger” precision...factors. The relationship between the acquisition organization and the external environment has a material effect on how acquisition efforts are...Walker, 2010). However, the office transitioned to PEO Missiles and Space in May 2011 as the Army began consolidating its air and missile defense C2

  17. Data Acquisition System for the UFFO Pathfinder

    CERN Document Server

    Na, G W; Choi, H S; Choi, Y J; Grossan, B; Hermann, I; Jeong, S; Jung, A; Kim, J E; Kim, S -W; Kim, Y W; Lee, J; Lim, H; Linder, E V; Min, K W; Nam, J W; Nam, K H; Panayuk, M I; Park, I H; Smoot, G F; Suh, Y D; Svelitov, S; Vedenken, N; Yashin, I; Zhao, M H

    2011-01-01

    The Ultra-Fast Flash Observatory (UFFO) Pathfinder is a payload on the Russian Lomonosov satellite, scheduled to be launched in November 2011. The Observatory is designed to detect early UV/Optical photons from Gamma-Ray Bursts (GRBs). There are two telescopes and one main data acquisition system: the UFFO Burst Alert & Trigger Telescope (UBAT), the Slewing Mirror Telescope (SMT), and the UFFO Data Acquisition (UDAQ) system. The UDAQ controls and manages the operation and communication of each telescope, and is also in charge of the interface with the satellite. It will write the data taken by each telescope to the NOR flash memory and sends them to the satellite via the Bus-Interface system (BI). It also receives data from the satellite including the coordinates and time of an external trigger from another payload, and distributes them to two telescopes. These functions are implemented in field programmable gates arrays (FPGA) for low power consumption and fast processing without a microprocessor. The UD...

  18. Instrumentation & Data Acquisition System (D AS) Engineer

    Science.gov (United States)

    Jackson, Markus Deon

    2015-01-01

    The primary job of an Instrumentation and Data Acquisition System (DAS) Engineer is to properly measure physical phenomenon of hardware using appropriate instrumentation and DAS equipment designed to record data during a specified test of the hardware. A DAS system includes a CPU or processor, a data storage device such as a hard drive, a data communication bus such as Universal Serial Bus, software to control the DAS system processes like calibrations, recording of data and processing of data. It also includes signal conditioning amplifiers, and certain sensors for specified measurements. My internship responsibilities have included testing and adjusting Pacific Instruments Model 9355 signal conditioning amplifiers, writing and performing checkout procedures, writing and performing calibration procedures while learning the basics of instrumentation.

  19. Shigella Iron Acquisition Systems and their Regulation.

    Science.gov (United States)

    Wei, Yahan; Murphy, Erin R

    2016-01-01

    Survival of Shigella within the host is strictly dependent on the ability of the pathogen to acquire essential nutrients, such as iron. As an innate immune defense against invading pathogens, the level of bio-available iron within the human host is maintained at exceeding low levels, by sequestration of the element within heme and other host iron-binding compounds. In response to sequestration mediated iron limitation, Shigella produce multiple iron-uptake systems that each function to facilitate the utilization of a specific host-associated source of nutrient iron. As a mechanism to balance the essential need for iron and the toxicity of the element when in excess, the production of bacterial iron acquisition systems is tightly regulated by a variety of molecular mechanisms. This review summarizes the current state of knowledge on the iron-uptake systems produced by Shigella species, their distribution within the genus, and the molecular mechanisms that regulate their production.

  20. Content Analysis in Systems Engineering Acquisition Activities

    Science.gov (United States)

    2016-04-30

    qÜáêíÉÉåíÜ=^ååì~ä= ^Åèìáëáíáçå=oÉëÉ~êÅÜ= póãéçëáìã= tÉÇåÉëÇ~ó=pÉëëáçåë= sçäìãÉ=f= = Content Analysis in Systems Engineering Acquisition Activities Karen...Ü~åÖÉ= - 47 - Panel 3. Systems Engineering : New Thinking for a New Age Wednesday, May 4, 2016 11:15 a.m. – 12:45 p.m. Chair: John D. Burrow...Deputy Assistant Secretary of the Navy for Research, Development, Test, & Evaluation (DASN RDT&E) Rethinking the Systems Engineering Process in Light

  1. An open-source, FireWire camera-based, Labview-controlled image acquisition system for automated, dynamic pupillometry and blink detection.

    Science.gov (United States)

    de Souza, John Kennedy Schettino; Pinto, Marcos Antonio da Silva; Vieira, Pedro Gabrielle; Baron, Jerome; Tierra-Criollo, Carlos Julio

    2013-12-01

    The dynamic, accurate measurement of pupil size is extremely valuable for studying a large number of neuronal functions and dysfunctions. Despite tremendous and well-documented progress in image processing techniques for estimating pupil parameters, comparatively little work has been reported on practical hardware issues involved in designing image acquisition systems for pupil analysis. Here, we describe and validate the basic features of such a system which is based on a relatively compact, off-the-shelf, low-cost FireWire digital camera. We successfully implemented two configurable modes of video record: a continuous mode and an event-triggered mode. The interoperability of the whole system is guaranteed by a set of modular software components hosted on a personal computer and written in Labview. An offline analysis suite of image processing algorithms for automatically estimating pupillary and eyelid parameters were assessed using data obtained in human subjects. Our benchmark results show that such measurements can be done in a temporally precise way at a sampling frequency of up to 120 Hz and with an estimated maximum spatial resolution of 0.03 mm. Our software is made available free of charge to the scientific community, allowing end users to either use the software as is or modify it to suit their own needs.

  2. 基于LabVIEW的PCI数据采集系统设计%Design of PCI data acquisition system based on LabVIEW

    Institute of Scientific and Technical Information of China (English)

    贾佳

    2012-01-01

    A virtual instrument system is established by using Lab VIEW and PCI data acquisition card. This paper introduced the operation process of calling PCI data acquisition card driving function by Lab VIEW CLF node, and the development of Lab VIEW block diagram. The instrument has the ability of data acquisition, waveform display, overload alarm, data storage, and so on.%利用虚拟仪器技术与PCI数据采集卡构建了一个虚拟仪器系统.详细介绍了通过LabVIEW CLF节点调用PCI数据采集卡驱动函数的操作过程,以及LabVIEW程序框图的开发流程.该仪器具有数据采集、波形显示、超限报警、数据存储等功能.

  3. Multi-modal Intelligent Seizure Acquisition (MISA) system - A new approach towards seizure detection based on full body motion measures

    DEFF Research Database (Denmark)

    Conradsen, Isa; Beniczky, Sándor; Wolf, Peter

    2009-01-01

    Many epilepsy patients cannot call for help during a seizure, because they are unconscious or because of the affection of their motor system or speech function. This can lead to injuries, medical complications and at worst death. An alarm system setting off at seizure onset could help to avoid...

  4. Two Axis Pointing System (TAPS) attitude acquisition, determination, and control

    Science.gov (United States)

    Azzolini, John D.; McGlew, David E.

    1990-12-01

    The Two Axis Pointing System (TAPS) is a 2 axis gimbal system designed to provide fine pointing of Space Transportation System (STS) borne instruments. It features center-of-mass instrument mounting and will accommodate instruments of up to 1134 kg (2500 pounds) which fit within a 1.0 by 1.0 by 4.2 meter (40 by 40 by 166 inch) envelope. The TAPS system is controlled by a microcomputer based Control Electronics Assembly (CEA), a Power Distribution Unit (PDU), and a Servo Control Unit (SCU). A DRIRU-II inertial reference unit is used to provide incremental angles for attitude propagation. A Ball Brothers STRAP star tracker is used for attitude acquisition and update. The theory of the TAPS attitude determination and error computation for the Broad Band X-ray Telescope (BBXRT) are described. The attitude acquisition is based upon a 2 star geometric solution. The acquisition theory and quaternion algebra are presented. The attitude control combines classical position, integral and derivative (PID) control with techniques to compensate for coulomb friction (bias torque) and the cable harness crossing the gimbals (spring torque). Also presented is a technique for an adaptive bias torque compensation which adjusts to an ever changing frictional torque environment. The control stability margins are detailed, with the predicted pointing performance, based upon simulation studies. The TAPS user interface, which provides high level operations commands to facilitate science observations, is outlined.

  5. Geofencing-Based Localization for 3d Data Acquisition Navigation

    Science.gov (United States)

    Nakagawa, M.; Kamio, T.; Yasojima, H.; Kobayashi, T.

    2016-06-01

    Users require navigation for many location-based applications using moving sensors, such as autonomous robot control, mapping route navigation and mobile infrastructure inspection. In indoor environments, indoor positioning systems using GNSSs can provide seamless indoor-outdoor positioning and navigation services. However, instabilities in sensor position data acquisition remain, because the indoor environment is more complex than the outdoor environment. On the other hand, simultaneous localization and mapping processing is better than indoor positioning for measurement accuracy and sensor cost. However, it is not easy to estimate position data from a single viewpoint directly. Based on these technical issues, we focus on geofencing techniques to improve position data acquisition. In this research, we propose a methodology to estimate more stable position or location data using unstable position data based on geofencing in indoor environments. We verify our methodology through experiments in indoor environments.

  6. Wireless Data Acquisition System for Launch Vehicles

    Directory of Open Access Journals (Sweden)

    Sabooj Ray

    2013-03-01

    Full Text Available Present launch vehicle integration architecture for avionics uses wired link to transfer data between various sub-systems. Depending on system criticality and complexity, MIL1553 and RS485 are the common protocols that are adopted. These buses have their inherent complexity and failure issues due to harness defects or under adverse flight environments. To mitigate this problem, a prototype wireless, data acquisition system for telemetry applications has been developed and demonstrated. The wireless system simplifies the integration, while reducing weight and costs. Commercial applications of wireless systems are widespread. Few systems have recently been developed for complex and critical environments. Efforts have been underway to make such architectures operational in promising application scenarios. This paper discusses the system concept for adapting a wireless system to the existing bus topology. The protocol involved and the internal implementation of the different modules are described. The test results are presented; some of the issues faced are discussed and the; future course of action is identified.Defence Science Journal, 2013, 63(2, pp.186-191, DOI:http://dx.doi.org/10.14429/dsj.63.4262

  7. Design of propellant acquisition systems for advanced cryogenic space propulsion systems

    Science.gov (United States)

    Burge, G. W.; Blackmon, J. B.; Castle, J. N.

    1973-01-01

    This paper presents results of work conducted to expand the technology base and evolve practical propellant surface tension acquisition system designs for future cryogenic space vehicles. Surface tension screen device channel flow analysis and supporting tests showed that reasonable mesh sizes could provide the required retention performance. Integrated subsystem studies and development showed that practical and effective screen surface tension acquisition devices could be designed for typical applications, but that other interfacing feed subsystems are often constrained by the design of the particular acquisition device. These constraints may dominate the total feed system performance.

  8. Nike Facility Diagnostics and Data Acquisition System

    Science.gov (United States)

    Chan, Yung; Aglitskiy, Yefim; Karasik, Max; Kehne, David; Obenschain, Steve; Oh, Jaechul; Serlin, Victor; Weaver, Jim

    2013-10-01

    The Nike laser-target facility is a 56-beam krypton fluoride system that can deliver 2 to 3 kJ of laser energy at 248 nm onto targets inside a two meter diameter vacuum chamber. Nike is used to study physics and technology issues related to laser direct-drive ICF fusion, including hydrodynamic and laser-plasma instabilities, material behavior at extreme pressures, and optical and x-ray diagnostics for laser-heated targets. A suite of laser and target diagnostics are fielded on the Nike facility, including high-speed, high-resolution x-ray and visible imaging cameras, spectrometers and photo-detectors. A centrally-controlled, distributed computerized data acquisition system provides robust data management and near real-time analysis feedback capability during target shots. Work supported by DOE/NNSA.

  9. Motor Type Test Data Acquisition System Based on LabVIEW%基于LabVIEW的电机型式试验数据采集系统

    Institute of Scientific and Technical Information of China (English)

    孟超群

    2013-01-01

    设计了一种以LabVIEW作为开发工具的电机型式试验的数据采集系统.应用智能仪器对试验过程中的电参量和非电参量数据进行采集,通过相应的通信接口标准实现LabVIEW环境下上位机数据的传输与控制.实践表明该系统自动化程度高、操作简单、测试精度高、投入使用后效果良好.%The motor type test data acquisition system based on LabVIEW was designed.The Intelligent instruments were used to acquire the electrical parametric and non-electrical parameters during the test and the corresponding communication interface standard were adapted to fulfill the data transfer and instrument control in the LabVIEW environment.It was proved that this system had the advantages of high automation,simple operation and high accuracy and efficiency.Good effects were proved during the test.

  10. Auxiliary DCP data acquisition system. [airborne system

    Science.gov (United States)

    Snyder, R. V.

    1975-01-01

    An airborne DCP Data Aquisition System has been designed to augment the ERTS satellite data recovery system. The DCP's are data collection platforms located at pertinent sites. With the appropriate sensors they are able to collect, digitally encode and transmit environmental parameters to the ERTS satellite. The satellite in turn relays these transmissions to a ground station for processing. The satellite is available for such relay duty a minimum of two times in a 24-hour period. The equipment is to obtain continuous DCP data during periods of unusual environmental activity--storms, floods, etc. Two circumstances contributed to the decision to design such a system; (1) Wallops Station utilizes surveillance aircraft in support of rocket launches and also in support of earth resources activities; (2) the area in which Wallops is located, the Delaware and Chesapeake Bay areas, are fertile areas for DCP usage. Therefore, by developing an airborne DCP receiving station and installing it on aircraft more continuous DCP data can be provided from sites in the surrounding areas at relatively low cost.

  11. Seizure Onset Detection based on a Uni- or Multi-modal Intelligent Seizure Acquisition (UISA/MISA) System

    DEFF Research Database (Denmark)

    Conradsen, Isa; Beniczky, Sándor; Wolf, Peter

    2010-01-01

    algorithm on motion data is extracting features as “log-sum” measures of discrete wavelet components. Classification into the two groups “seizure” versus “nonseizure” is made based on the support vector machine (SVM) algorithm. The algorithm performs with a sensitivity of 91-100%, a median latency of 1...

  12. Determination of characteristics of feromagnetic material using modern data acquisition system

    Directory of Open Access Journals (Sweden)

    Koprivica Branko

    2009-01-01

    Full Text Available This paper describes the use of modern measuring and data acquisition system for determining characteristics of feromagnetic material. For this purpose data acquisition card NI USB-6009, PC with data acquisition software and fluxmeter Electrical Steel Measuring System MPG 100 D were used. Based on the results obtained by measurements the modeling of hysteresis loop is performed by using appropriate mathematical model.

  13. The safety parameters monitoring system for the coal mine based on CAN bus communication and intelligent data acquisition

    Institute of Scientific and Technical Information of China (English)

    Bin Guangfu; Chu Wangwen; Balbir S.Dhillon; He Wenbiao

    2008-01-01

    In this paper,a monitoring and controlling system for the safety in production and environmental parameters of a small and medium-sized coal mine has been developed after analyzing the current domestic coal production and securi-ty conditions.The client computer can convert the analog signal about the safety in production and environmental param-eters detected from the monitoring terminal into digital signal,and then,send the signal to the coal mine safety monito-ring centre.This information can be analyzed,judged,and diagnosed by the monitoring-management-controUing soft-ware for helping the manager and technical workers to control the actual underground production and security situations.The system has many advantages including high reliability,better performance of real-time monitoring,faster data com-municating and good practicability,and it can effectively prevent the occurrence of safety incidents in coal mines.

  14. Achieving Better Buying Power Through Acquisition of Open Architecture Software Systems for Web-Based and Mobile Devices

    Science.gov (United States)

    2015-04-30

    reciprocity for shared development, (9) collaborative buying, (10) donation, (11) sponsored development, (12) free / open source software (e.g., Government OSS...review and approve choices between functionally similar open source software (OSS) components, and commercially priced closed source software (CSS...OWF) is a government open source software (GOSS) effort that is central to such agile OA system development. The OZONE family of products includes

  15. Using Locally Generated Magnetic Indices to Characterize the Ionosphere From Magnetic Data Acquisition System (Magdas Ground Based Observatories in Nigeria.

    Directory of Open Access Journals (Sweden)

    U.C. Rabiu

    2013-06-01

    Full Text Available This work presents an attempt to establish a baseline for geomagnetic indices inNigeria. This is particularly very crucial since these indices give indications of theseverity of magnetic fluctuations, and hence the level of disturbances in theionosphere. K (an index which measures the magnetic perturbations of theplanetary field and A (a linear measure of the Earth's field that provides a dailyaverage level for geomagnetic activity geomagnetic indices were generated locallyfrom geomagnetic data obtained using ground based MAGDAS magnetometerslocated at Abuja (9 ̊ 40’N, 7 ̊ 29’E, Ilorin (8 ̊30’N, 4 ̊33’E and Lagos (6 ̊27’N,3 ̊23’E in Nigeria using Computer-based derivation. The indices generated wereused to characterize the ionosphere over the Magdas magnetometer Nigerianetwork stations. Results obtained showed average K values of 3.5 (ABU, 4.60(LAG and 4.13 (ILR, the ionosphere over the three stations was found to berelatively active (4.08 thus setting the baseline for characterizing the ionosphereover Nigeria from ground based magnetometers.

  16. Production Data Acquisition and Analysis Management System: An Example Based on a Study of Automotive Supplier Solution

    Directory of Open Access Journals (Sweden)

    Lubomir Lengyel

    2013-12-01

    Full Text Available Quality of data coming from manual entry of information is a key element in efficiency of decision making process for all support functions and as well management allowing them to quickly react on changing circumstances of working environment. Principle finding of analysis performed within an automotive production companies shows a need to cover such requirement and develop a robust solution with efficient data collection, business intelligence capabilities and analysis support required for fast decision making process speeding up reaction in case of non-conformity. Purpose of KONIS system is providing a highly efficient solution for manual data entry, statistical analysis and decision making support for modern production company.

  17. Wearable System for Acquisition and Monitoring of Biological Signals

    Science.gov (United States)

    Piccinini, D. J.; Andino, N. B.; Ponce, S. D.; Roberti, MA; López, y. N.

    2016-04-01

    This paper presents a modular, wearable system for acquisition and wireless transmission of biological signals. Configurable slaves for different signals (such as ECG, EMG, inertial sensors, and temperature) based in the ADS1294 Medical Analog Front End are connected to a Master, based in the CC3200 microcontroller, both from Texas Instruments. The slaves are configurable according to the specific application, providing versatility to the wearable system. The battery consumption is reduced, through a couple of Li-ion batteries and the circuit has also a battery charger. A custom made box was designed and fabricated in a 3D printer, preserving the requirements of low cost, low weight and safety recommendations.

  18. 基于灰色决策系统中的知识获取%Knowledge acquisition based on grey decision systems

    Institute of Scientific and Technical Information of China (English)

    樊伟

    2013-01-01

    The main objective of this paper is to study approaches to knowledge reductions in incomplete ordered information system in which not only unknown values are existing but also all attributes are looked as criterions. In such information system, the concept of similarity dominance relation is proposed for classification analysis,and then two new forms of knowledge reduction are presented, respectively. Based on the lower and upper approximate sets in terms of similarity dominance relation, the concept of approximate distribution reduct is introduced into incomplete ordered decision system. Furthermore, the judgment theorems,discernibility matrixes with respect to four new approximate distribution reducts are obtained and then the discernibility formulas are used to calculate these reducts. Finally,an illustrative example is analyzed. These results are meaningful both in the theory and in applications for rules’ acquisition in complex incomplete decision systems.%  现实世界中的信息决策系统是非常复杂的,许多信息表中的记录不仅是离散值,还可能为区间值。本文以包含区间值的灰色粗糙集为研究对象,使用基于区间一致关系和区间包含关系取代经典粗集模型中的等价关系和不可分别关系,给出了从含区间值灰色决策系统中获取知识新的理论基础与操作手段。

  19. Test bed for real-time image acquisition and processing systems based on FlexRIO, CameraLink, and EPICS

    Energy Technology Data Exchange (ETDEWEB)

    Barrera, E., E-mail: eduardo.barrera@upm.es [Grupo de Investigación en Instrumentación y Acústica Aplicada, Universidad Politécnica de Madrid (UPM) (Spain); Ruiz, M.; Sanz, D. [Grupo de Investigación en Instrumentación y Acústica Aplicada, Universidad Politécnica de Madrid (UPM) (Spain); Vega, J.; Castro, R. [Asociación EURATOM/CIEMAT para Fusión, Madrid (Spain); Juárez, E.; Salvador, R. [Centro de Investigación en Tecnologías Software y Sistemas Multimedia para la Sostenibilidad, Universidad Politécnica de Madrid (UPM) (Spain)

    2014-05-15

    Highlights: • The test bed allows for the validation of real-time image processing techniques. • Offers FPGA (FlexRIO) image processing that does not require CPU intervention. • Is fully compatible with the architecture of the ITER Fast Controllers. • Provides flexibility and easy integration in distributed experiments based on EPICS. - Abstract: Image diagnostics are becoming standard ones in nuclear fusion. At present, images are typically analyzed off-line. However, real-time processing is occasionally required (for instance, hot-spot detection or pattern recognition tasks), which will be the objective for the next generation of fusion devices. In this paper, a test bed for image generation, acquisition, and real-time processing is presented. The proposed solution is built using a Camera Link simulator, a Camera Link frame-grabber, a PXIe chassis, and offers software interface with EPICS. The Camera Link simulator (PCIe card PCIe8 DVa C-Link from Engineering Design Team) generates simulated image data (for example, from video-movies stored in fusion databases) using a Camera Link interface to mimic the frame sequences produced with diagnostic cameras. The Camera Link frame-grabber (FlexRIO Solution from National Instruments) includes a field programmable gate array (FPGA) for image acquisition using a Camera Link interface; the FPGA allows for the codification of ad-hoc image processing algorithms using LabVIEW/FPGA software. The frame grabber is integrated in a PXIe chassis with system architecture similar to that of the ITER Fast Controllers, and the frame grabber provides a software interface with EPICS to program all of its functionalities, capture the images, and perform the required image processing. The use of these four elements allows for the implementation of a test bed system that permits the development and validation of real-time image processing techniques in an architecture that is fully compatible with that of the ITER Fast Controllers

  20. Design of the iLocater Acquisition Camera Demonstration System

    CERN Document Server

    Bechter, Andrew; Ketterer, Ryan; Crepp, Justin R; King, David; Zhao, Bo; Reynolds, Robert; Hinz, Philip; Brooks, Jack; Bechter, Eric

    2015-01-01

    Existing planet-finding spectrometers are limited by systematic errors that result from their seeing-limited design. Of particular concern is the use of multi-mode fibers (MMFs), which introduce modal noise and accept significant amounts of background radiation from the sky. We present the design of a single-mode fiber-based acquisition camera for a diffraction-limited spectrometer named "iLocater." By using the "extreme" adaptive optics (AO) system of the Large Binocular Telescope (LBT), iLocater will overcome the limitations that prevent Doppler instruments from reaching their full potential, allowing precise radial velocity (RV) measurements of terrestrial planets around nearby bright stars. The instrument presented in this paper, which we refer to as the acquisition camera "demonstration system," will measure on-sky single-mode fiber (SMF) coupling efficiency using one of the 8.4m primaries of the LBT in fall 2015.

  1. GNU/Linux driver development for embedded data acquisition systems

    Directory of Open Access Journals (Sweden)

    Adrian Iglesias-Benitez

    2014-04-01

    Full Text Available The present work focuses on the development of a driver to handle a data acquisition system controlled by the MINI2440 single board computer based on the S3C2440 RISC processor from Samsung and equipped with an ARM920T 32 bits kernel, in which an embedded GNU/Linux operating system is executed. A global vision of the system is presented and the hardware and software components are described. Emphasis is made in the use of structures, functions and blocking and synchronization primitives GNU/Linux offers to solve problems of the producer´s/consumer´s kind.

  2. Electro-Optical Data Acquisition and Tracking System

    Data.gov (United States)

    Federal Laboratory Consortium — The Electro-Optical Data Acquisition and Tracking System (EDATS) dynamically tracks and measures target signatures. It consists of an instrumentation van integrated...

  3. 基于物联网的手机数据采集系统研究%Data Acquisition System Based on Internet

    Institute of Scientific and Technical Information of China (English)

    李采; 刘幺和; 袁海

    2014-01-01

    在智能手机普及使用的今天,物联网技术的应用有了广泛的提高。针对物联网技术的移动终端(手机)快速数据、图像和声音采集和传输是十分重要的课题,论文研究了移动终端(手机)的QR条码的数据储存、传输及识别等,提出了移动终端数据采集系统,结论是基于二维码的图片和声音采集处理将在物联网应用有广泛的应用前景。%In smart phone universal useing of today ,The application of The Internet of Things technology has widely improved .Design based on The Internet of Things technology for mobile terminal(phone) fast collection and transmission of data ,and image and sound are important of subject .This paper has researched data store、transmission and the recognition , and then submit mobile terminal data of QR code on the(phone) ,and proposed the mobile terminal data acquisition system . Conclusion is the application of QR code for pictures and voice collection processing which will have a widely application pros‐pects .

  4. Human Systems Integration (HSI) in Acquisition. Acquisition Phase Guide

    Science.gov (United States)

    2009-08-01

    Tools: ● CATIA ● HSI Requirements Guide ● IMPRINT Activities for Each Output: 1.0 Collect domain requirements inputs 1.1 Ensure draft system...Outputs boxes. Tools: ● NHV ● Index of Habitability ● IMPRINT, CATIA , JACK ● HSI Requirements Guide Activities for Each Output: 1.0 Provide...Phase (Inputs) Human Systems Integration Tools: ● IMPRINT ● CATIA ● IPME References: ● DODI 5000.02 & DODD 5000.01 ● DAG ● CJCSI 3170.01 ● AFPD 63

  5. System of Systems (SoS) Architecture Centric Acquisition

    Science.gov (United States)

    2016-06-07

    operation of the Software Engineering Institute, a federally funded research and development center. The Government of the United States has a royalty- free ...WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Carnegie Mellon University , Software Engineering Institute,Pittsburgh,PA...Architecture Evaluation, System and Software Architecture Evaluation, Acquisition Planning Workshop, etc. – Capture comments and suggestions

  6. A method for knowledge acquisition in diagnostic expert system.

    Science.gov (United States)

    Li, Weishi; Li, Aiping; Li, Shudong

    2015-01-01

    Knowledge acquisition plays very important role in the diagnostic expert system. It usually takes a long period to acquire disease knowledge using the traditional methods. To solve this problem, this paper describes relations between rough set theory and rule-based description of diseases, which corresponds to the process of knowledge acquisition of diagnostic expert system. Then the exclusive rules, inclusive rules and disease images of disease are built based on the PDES diagnosis model, and the definition of probability rule is put forward. At last, the paper presents the rule-based automated induction reasoning method, including exhaustive search, post-processing procedure, estimation for statistic test and the bootstrap and resampling methods. We also introduce automated induction of the rule-based description, which is used in our diseases diagnostic expert system. The experimental results not only show that rough set theory gives a very suitable framework to represent processes of uncertain knowledge extraction, but also that this method induces diagnostic rules correctly. This method can act as the assistant tool for development of diagnosis expert system, and has an extensive application in intelligent information systems.

  7. The LHCb trigger and data acquisition system

    CERN Document Server

    Dufey, J P; Harris, F; Harvey, J; Jost, B; Mato, P; Müller, E

    2000-01-01

    The LHCb experiment is the most recently approved of the 4 experiments under construction at CERNs LHC accelerator. It is a special purpose experiment designed to precisely measure the CP violation parameters in the B-B system. Triggering poses special problems since the interesting events containing B-mesons are immersed in a large background of inelastic p-p reactions. We therefore decided to implement a 4 level triggering scheme. The LHCb Data Acquisition (DAQ) system will have to cope with an average trigger rate of ~40 kHz, after two levels of hardware triggers, and an average event size of ~100 kB. Thus an event-building network which can sustain an average bandwidth of 4 GB/s is required. A powerful software trigger farm will have to be installed to reduce the rate from the 40 kHz to ~100 Hz of events written to permanent storage. In this paper we outline the general architecture of the Trigger and DAQ system and the readout protocols we plan to implement. First results of simulations of the behavior o...

  8. ARGO-YBJ data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    Aloisio, A. [Dipartimento di Fisica, Universita ' Federico II' and INFN, Naples (Italy); Branchini, P. [Dipartimento di Fisica, Universita Roma Tre and INFN, Rome (Italy); Budano, A. [Dipartimento di Fisica, Universita Roma Tre and INFN, Rome (Italy); Catalanotti, S. [Dipartimento di Fisica, Universita ' Federico II' and INFN, Naples (Italy); Creti, P. [Dipartimento di Ingegneria, Universita degli Studi di Lecce and INFN, Lecce (Italy); Galeazzi, F. [Dipartimento di Fisica, Universita Roma Tre and INFN, Rome (Italy); Marsella, G. [Dipartimento di Ingegneria, Universita degli Studi di Lecce and INFN, Lecce (Italy); Mastroianni, S. [Dipartimento di Fisica, Universita ' Federico II' and INFN, Naples (Italy)]. E-mail: Stefano.Mastroianni@na.infn.it; Ruggieri, F. [Dipartimento di Fisica, Universita Roma Tre and INFN, Rome (Italy); Stanescu, C. [Dipartimento di Fisica, Universita Roma Tre and INFN, Rome (Italy)

    2006-12-01

    The ARGO-YBJ experiment is reaching its final design configuration. An array of single layer Resistive Plate Counters (RPCs) covering an area of {approx}5800m{sup 2} will collect a huge amount of data. The throughput required from the final detector strongly depends on the trigger rate. The DAQ system must be able to sustain a data transfer rate estimated to be the order of 15MB/s and a high peak of data flow. Data are read out using a typical front-end acquisition chain built around a custom bus. Specialized electronics have been designed and efficient software had to be written to perform this task. Data are then sent to the on-line farm through a switch exploiting gigabit-ethernet protocol. In this paper we will describe the design of the DAQ system, the software which deals with data collection and network sending and the performances. The architecture of the on-line farm is also described together with the monitoring system.

  9. Distributed acquisition system using the VME KAV30 single board computer in a VAXELN environment

    Science.gov (United States)

    D'Antone, I.; Mandrioli, G.; Matteuzzi, P.; Pavesi, B.; Sanzani, G.; Marini, A.; Ronga, F.; Surdo, A.; Mancarella, G.

    1994-02-01

    An acquisition system based on a network (Ethernet/DECNET) of KAV30 VAX processors is described. KAC30 is a VME single board computer based around rt-Vax 300 and running in VAXELN, a Digital Equipment software product for the development of dedicated, real time systems for VAX processors. A central VAX running under the VAX/VMS operating system is used as file server and as an interface of the acquisition system with respect to the user's world.

  10. Studying MRI acquisition protocols of sustained sounds with a multimodal acquisition system

    OpenAIRE

    Laprie, Yves; Aron, Michael; Berger, Marie-Odile; Wrobel-Dautcourt, Brigitte

    2014-01-01

    International audience; The acquisition of dynamic articulatory data is crucial to improve our understanding of speech production. Ultrasound (US) imaging presents the interest of offering a good temporal resolution without any health hazard and at a reasonable price. However, it cannot be used alone because there is no reference coordinate system and no spatial calibration. We describe a multimodal acquisition system which uses electromagnetography sensors to locate the US probe, and the met...

  11. The Resource Manager the ATLAS Trigger and Data Acquisition System

    CERN Document Server

    Aleksandrov, Igor; The ATLAS collaboration; Lehmann Miotto, Giovanna; Soloviev, Igor

    2016-01-01

    The Resource Manager of the ATLAS Trigger and Data Acquisition system The Resource Manager is one of the core components of the Data Acquisition system of the ATLAS experiment at the LHC. The Resource Manager marshals the right for applications to access resources which may exist in multiple but limited copies, in order to avoid conflicts due to program faults or operator errors. The access to resources is managed in a manner similar to what a lock manager would do in other software systems. All the available resources and their association to software processes are described in the Data Acquisition configuration database. The Resource Manager is queried about the availability of resources every time an application needs to be started. The Resource Manager’s design is based on a client-server model, hence it consists of two components: the Resource Manager "server" application and the "client" shared library. The Resource Manager server implements all the needed functionalities, while the Resource Manager c...

  12. 基于 FPGA+USB2.O多通道数据采集系统设计%Design of Multi-channel Data Acquisition System Based on FPGA and USB2.0

    Institute of Scientific and Technical Information of China (English)

    程海狮; 黄玉清

    2011-01-01

    针对传统数据采集系统中主控制器升级慢和传输芯片速率低等弊端,利用FPGA内嵌FIR滤波器抗干扰、现场可编程性、容易升级与更新以及USB接口通用性好、传输速率快的优点,设计了基于FPGA+USB2.0多通道数据采集系统,能够完成4路最大采样频率150 kHz、精度为12位的数据采集和传输,实现了高精度数据采集.%In the traditional data acquisition system design, primary controller is hard to update and the transmission speed of transmission chip is low. This peper has designed a multi-channel data acquisition system based on FPCA and USB2. 0. The system achieves acquiring 4 - route data acquisition with the maximal frequency of 150 KHz and the precision of 12 bits. The system has desgined multi-channel FIR filter. This approach can achieve real-time filter and eliminate the interference. The system is modular design, high stability, can be widely used for multi-channel data acquisition.

  13. Haverhill solar energy project: site data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    1980-05-16

    The diagrams and specifications are presented for the instrumentation for the solar industrial process heat system to provide 150 psi steam for polystyrene production. The data acquisition system and specific system sensors are included. (MHR)

  14. Data acquisition system for segmented reactor antineutrino detector

    Science.gov (United States)

    Hons, Z.; Vlášek, J.

    2017-01-01

    This paper describes the data acquisition system used for data readout from the PMT channels of a segmented detector of reactor antineutrinos with active shielding. Theoretical approach to the data acquisition is described and two possible solutions using QDCs and digitizers are discussed. Also described are the results of the DAQ performance during routine data taking operation of DANSS. DANSS (Detector of the reactor AntiNeutrino based on Solid Scintillator) is a project aiming to measure a spectrum of reactor antineutrinos using inverse beta decay (IBD) in a plastic scintillator. The detector is located close to an industrial nuclear reactor core and is covered by passive and active shielding. It is expected to have about 15000 IBD interactions per day. Light from the detector is sensed by PMT and SiPM.

  15. An image acquisition system built with a modular frame grabber for scanning electron microscopes

    Energy Technology Data Exchange (ETDEWEB)

    Ruan, S. [The Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637 (United States); Kapp, O.H. [The Department of Radiology and The Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637 (United States)

    1995-09-01

    We have built an image acquisition and processing system based on a modular frame grabber board (MFG) for use with scanning (or scanning transmission) electron microscopes. The variable-scan acquisition module of the grabber board provides compatibility with electron microscopes processing various scan speeds, e.g., the very slow scan rate of our mirror-type electron microscope. In addition to the acquisition function, the board provides many image processing capabilities. A special time-base unit was built to synchronize the acquisition system with the scanning system on the electron microscope. A Windows application has been built to operate the MFG as well as manage all functions of the electron microscope. Using this approach we have been able to greatly simplify the task of digital image acquisition as well as creating a powerful and seamless interface to our Windows-based environment. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

  16. A Flexible Microcontroller-Based Data Acquisition Device

    Directory of Open Access Journals (Sweden)

    Darko Hercog

    2014-06-01

    Full Text Available This paper presents a low-cost microcontroller-based data acquisition device. The key component of the presented solution is a configurable microcontroller-based device with an integrated USB transceiver and a 12-bit analogue-to-digital converter (ADC. The presented embedded DAQ device contains a preloaded program (firmware that enables easy acquisition and generation of analogue and digital signals and data transfer between the device and the application running on a PC via USB bus. This device has been developed as a USB human interface device (HID. This USB class is natively supported by most of the operating systems and therefore any installation of additional USB drivers is unnecessary. The input/output peripheral of the presented device is not static but rather flexible, and could be easily configured to customised needs without changing the firmware. When using the developed configuration utility, a majority of chip pins can be configured as analogue input, digital input/output, PWM output or one of the SPI lines. In addition, LabVIEW drivers have been developed for this device. When using the developed drivers, data acquisition and signal processing algorithms as well as graphical user interface (GUI, can easily be developed using a well-known, industry proven, block oriented LabVIEW programming environment.

  17. A flexible microcontroller-based data acquisition device.

    Science.gov (United States)

    Hercog, Darko; Gergič, Bojan

    2014-06-02

    This paper presents a low-cost microcontroller-based data acquisition device. The key component of the presented solution is a configurable microcontroller-based device with an integrated USB transceiver and a 12-bit analogue-to-digital converter (ADC). The presented embedded DAQ device contains a preloaded program (firmware) that enables easy acquisition and generation of analogue and digital signals and data transfer between the device and the application running on a PC via USB bus. This device has been developed as a USB human interface device (HID). This USB class is natively supported by most of the operating systems and therefore any installation of additional USB drivers is unnecessary. The input/output peripheral of the presented device is not static but rather flexible, and could be easily configured to customised needs without changing the firmware. When using the developed configuration utility, a majority of chip pins can be configured as analogue input, digital input/output, PWM output or one of the SPI lines. In addition, LabVIEW drivers have been developed for this device. When using the developed drivers, data acquisition and signal processing algorithms as well as graphical user interface (GUI), can easily be developed using a well-known, industry proven, block oriented LabVIEW programming environment.

  18. Synergism of He-3 acquisition with lunar base evolution

    Science.gov (United States)

    Crabb, Thomas M.; Jacobs, Mark K.

    1988-09-01

    It is shown how acquisition of He-3 affects Lunar Base development and operation. A four phase evolutionary Lunar Base scenario is summarized with initial equipment mass and resupply requirements. Requirements for various He-3 mining operations are shown and available by-products are identified. Impacts of mining He-3 on Lunar Base development include increases in equipment masses to be delivered to the lunar surface and a reduction of Lunar Base resupply based on availability of He-3 acquisition by-products. It is concluded that the acquisition of this valuable fusion fuel element greatly enhances the commercial potential of a Lunar Base.

  19. Low Cost Data Acquisition System for Students

    Directory of Open Access Journals (Sweden)

    Sachin Sharma Gaurav Kumar

    2011-12-01

    Full Text Available Today the engineering education in India is increasing, so the demand of quality projects and quality research at the students level is also increasing. To make good hardware projects most of the time we need to acquire real time data. This acquisition is done through the dedicated device which is called Data Acquisition Device. In India there are very less no. of companies which are making the Data Acquisition Devices and the available devices are very costly for the students. Hence, there is need to provide students a cost effective or low cost device which can suite according to their proposed work. In this paper we have designed and implemented a prototype of Data Acquisition Device (DAQ using AVR microcontroller. The software for the DAQ device has been mode on MATLAB and LabView and the device has been tested for different tasks and under different conditions

  20. CLIC-ACM: Acquisition and Control System

    CERN Document Server

    Bielawski, B; Magnoni, S

    2014-01-01

    CLIC [1] (Compact Linear Collider) is a world-wide collaboration to study the next terascale lepton collider, relying upon a very innovative concept of two-beamacceleration. In this scheme, the power is transported to the main accelerating structures by a primary electron beam. The Two Beam Module (TBM) is a compact integration with a high filling factor of all components: RF, Magnets, Instrumentation, Vacuum, Alignment and Stabilization. This paper describes the very challenging aspects of designing the compact system to serve as a dedicated Acquisition & Control Module (ACM) for all signals of the TBM. Very delicate conditions must be considered, in particular radiation doses that could reach several kGy in the tunnel. In such severe conditions shielding and hardened electronics will have to be taken into consideration. In addition, with more than 300 ADC&DAC channels per ACM and about 21000 ACMs in total, it appears clearly that power consumption will be an important issue. It is also obvious that...

  1. Data Acquisition System of Superconducting Cavity Test Based on Labview%基于 Labview 的超导腔测试数据采集系统

    Institute of Scientific and Technical Information of China (English)

    张娟; 戴建枰; 黄泓; 徐波; 林海英; 孙毅; 潘卫民

    2013-01-01

    设计了基于Labview的超导腔测试数据采集系统,该系统应用于超导腔垂直和水平测试的数据采集,实现了测量仪器、本地机及远程机的数据通讯,于国内首次实现了Q0~Eacc曲线及辐射剂量曲线的实时显示,并使得Labview采集的数据与EPICS之间互相连通。该数据采集系统根据被测数据带宽及精度的不同,灵活选择不同的传输接口,采集功率计、频率计、温度计、辐射剂量探测器等仪器的信号,实时地传输、处理并存储所有数据。 Spoke012超导腔垂直测试实验结果表明,该系统运行稳定可靠,易于维护,界面友好,同时具有很好的可移植性,可在其他类型的超导腔测试中获得广泛应用。%The data acquisition system based on Labview is designed .The system is applied to the vertical and horizontal test experiment .It is in charge of communications of the measuring instruments , the local machine and the remote machine .It realizes the real-time display of Q0 ~Eacc and radiation dose curve for the first time in China.The data connection between Labview and EPICS is also implemented .The DAQ system chooses dif-ferent transmission interfaces according to the different bandwidths and precisions of the measured data .It col-lects data of instruments such as power meter , frequency counter , thermometer and radiation dosimeter .All of these data should be acquired , transmitted, processed and stored synchronously and in real time .The result for Spoke012 cavity vertical test has shown that the DAQ system in operation performs stably and reliably as expec -ted.It also has a friendly interface and can be transplanted to other superconducting cavity tests easily and con -veniently .

  2. An Intelligent Information Acquisition System for Heat Exchange Station Based on LBS%基于 LBS 的换热站智能巡检系统

    Institute of Scientific and Technical Information of China (English)

    梁涛; 徐冠楠; 杨伟达; 邹继行

    2016-01-01

    针对目前人工巡检换热站数据更新不及时、智能化程度不高、设备信息获取困难等问题,在充分考虑供热管网系统对空间地理信息数据需求的同时,为摆脱控制中心对办公地点的限制,开发了一种以Android智能手机为平台,基于LBS的换热站智能巡检系统。系统结合GPS技术与RFID技术对传统热网巡检监控平台加以改进,融入非接触式RFID智能卡密钥验证技术对移动终端数据进行加密保护。论述了系统的体系结构与功能设计,经实践验证:换热站智能巡检系统安全可靠,对提高巡检人员工作效率、保障热网稳定运行有重要作用。%For the problems in current manual inspection mode of heat transfer station:data updates is not timely , intelligence is not high , device information acquisition difficulties and so on;taking full account of the heating pipe network’ s spatial Information data needs , while the control center to get rid of restrictions on office space ,developing an intelligent inspection system for heat exchange station based on LBS and smart phone with Android platform ;system combines GPS technology and RFID technology to improve traditional heating network inspection monitoring platform , assimilate into the non-contact RFID smart card key authentication technology for mobile terminals encrypt data protection . It discusses the system architecture and functional design , heat exchange station intelligent inspection system is safe and reliable, proven to improve the efficiency of inspection personnel , which plays an important role to ensure the stable operation of heating network .

  3. 基于DSP的瞬态碰撞信号采集存储系统%Data acquisition system for transient collision signal based on DSP

    Institute of Scientific and Technical Information of China (English)

    徐超; 王利; 吕昊暾; 刘振强

    2011-01-01

    In allusion to the fast measurements and records for transient collision signal, the device with DSP TMS320L F2407A as control unit and AM29LV800B.flash memory was introduced. Based on A/D converter inside DSP, Accessorial circuit including the signal conditioning circuit, Flash memory interface and the corresponding controlling software are designed and the system is of small size. The collision test of piezoelectric crystals verified the feasibility and it recorded the complete real-time data. The device can be applied to the environment of a variety of transient signal acquisition, and it can store those data even if the power supply is shut off. After recycling, the data can be read out to analyze.%针对瞬态碰撞信号的快速测量及记录,介绍了一种DSP TMS320LF2407A 为控制器,AM29LV800B为Flash闪存的瞬态信号采集存储系统.该小型化数据采集存储系统利用了DSP器件内的ADC模块,设计了包括信号调理电路、Flash存储器接口电路等辅助电路和相应的控制软件.利用压电晶体的碰撞试验验证了可行性,记录完整的实时信号数据.可应用于多种瞬态信号采集的场合,并能在系统掉电的情况下保持测试所得的数据,便于分析.

  4. A Prototype of Wireless Power and Data Acquisition System for Large Detectors

    OpenAIRE

    2013-01-01

    A new prototype wireless data acquisition system has been developed with the intended application to read-out instrumentation systems having a large number of channels. In addition such system could be deployed in smaller detectors requiring increased mobility. The data acquisition and control system is based on 802.11n compliant hardware and protocols. In this paper we describe our case study with a single readout channel performed for a potential large detector containing photomultiplier tu...

  5. 基于FPGA的数据采集系统的设计%Design of data acquisition system based on FPGA

    Institute of Scientific and Technical Information of China (English)

    陈立万; 黄青龙; 刘万里

    2011-01-01

    文章介绍了基于FPGA对多路数据同步实时采集的一种新型数据采集系统设计,该系统将多个功能模块封装在一个FPGA系统中,并用FPGA来完成A/D转换和双口RAM等模块的控制,对采集到的数据在存储器中进行分页存储,有效解决了通信过程中地址冲突问题,实现了对信号任意长度的连续采样.该数据采集系统具有性能稳定、实时性强、集成度高、扩展灵活等特点.%A new kind of data acquisition system is introduced in this paper, in which the multi-channel synchronized real-time data acquisition under the coordinate control of field-programmable gate array(FPGA) is realized. In this system, several functional modules are packaged in a FPGA chip to implement the A/D conversion and control of the dual-port RAM and other modules, and the gathered data is stored by paging in the memorizer. It effectively solves the problem of address conflicts during the course of communication and realizes the continuous sampling to any signal length. The proposed data acquisition system has characteristics of stable performance, flexible expansion, high real-timeness and integration.

  6. On the Performance of Code Acquisition in MIMO CDMA Systems

    Science.gov (United States)

    Kim, Sangchoon; An, Jinyoung

    This letter investigates the effects of using multiple transmit antennas on code acquisition for preamble search in the CDMA uplink when MIMO is used for signal transmission and reception. The performance of a ML code acquisition technique in the presence of MIMO channel is analyzed by considering the detection and miss probabilities. The acquisition performance is numerically evaluated on a frequency selective fading channel. It is found that the performance of code acquisition scheme for a SIMO system is better than that for the case of MIMO on the low thresholds in terms of detection performance and MAT.

  7. Control and data acquisition systems for high field superconducting wigglers

    CERN Document Server

    Batrakov, A; Karpov, G; Kozak, V; Kuzin, M; Kuper, E; Mamkin, V; Mezentsev, N A; Repkov, V V; Selivanov, A; Shkaruba, V A

    2001-01-01

    This paper describes the control and DAQ system of superconducting wigglers with magnetic field range up to 10.3 T. The first version of the system controls a 7 T superconducting wiggler prepared for installation at Bessy-II (Germany). The second one controls a 10 T wiggler which is under testing now at the SPring-8 site (Japan). Both systems are based on VME apparatus. The set of specialized VME modules is elaborated to arrange wiggler power supply control, full time wiggler monitoring, and magnetic field high accuracy measurement and field stabilization. The software for the control of the wigglers is written in C language for VxWorks operation system for a Motorola-162 VME controller. The task initialization, stops and acquisition of the data can be done from the nearest personal computer (FTP host for VME), or from the remote system as well.

  8. The upgrade for the data acquisition system of the KOTO detector

    Energy Technology Data Exchange (ETDEWEB)

    Tecchio, M., E-mail: tecchio@umich.edu [University of Michigan, Ann Arbor, MI (United States); Beechert, J.; Campbell, M. [University of Michigan, Ann Arbor, MI (United States); Huff, M. [Kenyon College, Gambier, OH (United States); Micallef, J.; Rymph, C.; Schamis, H.; Su, S. [University of Michigan, Ann Arbor, MI (United States); Xu, J. [Apple Inc., Cupertino, CA (United States)

    2016-07-11

    A major upgrade to the KOTO detector data acquisition system based on the ATCA standard is being considered. The ATCA standard provides a natural solution to the current KOTO constraints, including communication between boards and higher input and output bandwidth.

  9. 基于Gamma全吸收型BaF2探测装置的数据获取系统%Data Acquisition System Based on Gamma-ray Total Absorption Facility

    Institute of Scientific and Technical Information of China (English)

    张奇玮; 贺国珠; 黄兴; 程品晶; 阮锡超; 朱兴华

    2016-01-01

    The data acquisition system based on gamma‐ray total absorption facility was developed for the accurate measurement of neutron capture cross section in the energy range of keV‐MeV .The pulsed signals from the detectors were acquired by FlashADC for data acquisition system on a Linux operation system .The control of program ,store of data ,online monitoring and analysis code were based on the Root framework .The main performances of system were acquired by the measurement of 60Co and 137Cs .The data acquisition system meets the requirement of accurate measurement of neutron cap‐ture cross section by GTAF .%为精确测量keV能区的中子俘获反应截面,研制了一套基于Gamma全吸收型BaF2探测装置的数据获取系统。数据获取系统工作在Linux环境下,应用 FlashADC采集探测器的脉冲信号。程序控制、数据存储、在线监控与分析程序基于Root平台。通过测量60 Co和137 Cs源,得到了数据获取系统主要性能的测试结果,其满足GTAF装置精确测量中子俘获反应截面的要求。

  10. An SDN based approach for the ATLAS data acquisition network

    CERN Document Server

    Blikra, Espen; The ATLAS collaboration

    2016-01-01

    ATLAS is a high energy physics experiment in the Large Hadron Collider located at CERN. During the so called Long Shutdown 2 period scheduled for late 2019, ATLAS will undergo several modifications and upgrades on its data acquisition system in order to cope with the higher luminosity requirements. As part of these activities, a new read-out chain will be built for the New Small Wheel muon detector and the one of the Liquid Argon calorimeter will be upgraded. The subdetector specific electronic boards will be replaced with new commodity-server-based systems and instead of the custom serial-link-based communication, the new system will make use of a yet to be chosen commercial network technology. The new network will be used as a data acquisition network and at the same time it is intended to allow communication for the control, calibration and monitoring of the subdetectors. Therefore several types of traffic with different bandwidth requirements and different criticality will be competing for the same underl...

  11. New Software Architecture Options for the TCL Data Acquisition System

    Energy Technology Data Exchange (ETDEWEB)

    Valenton, Emmanuel [Univ. of California, Berkeley, CA (United States)

    2014-09-01

    The Turbulent Combustion Laboratory (TCL) conducts research on combustion in turbulent flow environments. To conduct this research, the TCL utilizes several pulse lasers, a traversable wind tunnel, flow controllers, scientific grade CCD cameras, and numerous other components. Responsible for managing these different data-acquiring instruments and data processing components is the Data Acquisition (DAQ) software. However, the current system is constrained to running through VXI hardware—an instrument-computer interface—that is several years old, requiring the use of an outdated version of the visual programming language, LabVIEW. A new Acquisition System is being programmed which will borrow heavily from either a programming model known as the Current Value Table (CVT) System or another model known as the Server-Client System. The CVT System model is in essence, a giant spread sheet from which data or commands may be retrieved or written to, and the Server-Client System is based on network connections between a server and a client, very much like the Server-Client model of the Internet. Currently, the bare elements of a CVT DAQ Software have been implemented, consisting of client programs in addition to a server program that the CVT will run on. This system is being rigorously tested to evaluate the merits of pursuing the CVT System model and to uncover any potential flaws which may result in further implementation. If the CVT System is chosen, which is likely, then future work will consist of build up the system until enough client programs have been created to run the individual components of the lab. The advantages of such a System will be flexibility, portability, and polymorphism. Additionally, the new DAQ software will allow the Lab to replace the VXI with a newer instrument interface—the PXI—and take advantage of the capabilities of current and future versions of LabVIEW.

  12. 基于波长选择的手掌静脉采集系统研究%Research on palm vein acquisition system based on wavelength choice

    Institute of Scientific and Technical Information of China (English)

    苑玮琦; 杨国天; 李威

    2011-01-01

    手掌静脉成像是手掌静脉识别的难点,设计了一种在拍摄全手的情况下能够采集到较清晰手掌静脉图像的低成本多波段采集系统,并分别在760 nm,850 nm,890 nm和960 nm四种单波长及两两组合的近红外光源下采集手掌静脉,总样本数为2500幅手掌静脉图像,然后利用提取的有效区域中手掌静脉平均灰度与非手掌静脉平均灰度的比值为波长选择标准对图像质量进行比较,最后选择在760 nm和960 nm混合波长下采集手掌静脉.%The palm vein image acquisition is difficult in palm vein pattern recognition.A multi-wavelength palm vein image acquisition system is proposed in this paper,which is low cost and can image the whole palm.A total of 2500palm vein images are acquired under the near-IR lighting source of 760 nm,850 nm,890 nm,960 nm and the combination of every two of them.The ratio of the average gray-scale value of palm vein areas and other areas in the region of interest (ROI) is taken as the criterion of wavelength choice.Palm vein image acquisition with the combination of 760 nm and 960 nm NIR is adopted at last.

  13. 初论信息采办%Preliminary Discussion on Information-based Acquisition

    Institute of Scientific and Technical Information of China (English)

    王延飞; 任海平; 刘洁

    2002-01-01

    Information-based acquisition explores acquisition management law from the perspective of information. In this article, the significance and status of researches on information-based acquisition are discussed, the necessity to carry out information-based acquisition research is clarified, and some key problems such as methodology in researches on information-based acquisition are pointed out.

  14. Value-informed space systems design and acquisition

    Science.gov (United States)

    Brathwaite, Joy

    Investments in space systems are substantial, indivisible, and irreversible, characteristics that make them high-risk, especially when coupled with an uncertain demand environment. Traditional approaches to system design and acquisition, derived from a performance- or cost-centric mindset, incorporate little information about the spacecraft in relation to its environment and its value to its stakeholders. These traditional approaches, while appropriate in stable environments, are ill-suited for the current, distinctly uncertain, and rapidly changing technical and economic conditions; as such, they have to be revisited and adapted to the present context. This thesis proposes that in uncertain environments, decision-making with respect to space system design and acquisition should be value-based, or at a minimum value-informed. This research advances the value-centric paradigm by providing the theoretical basis, foundational frameworks, and supporting analytical tools for value assessment of priced and unpriced space systems. For priced systems, stochastic models of the market environment and financial models of stakeholder preferences are developed and integrated with a spacecraft-sizing tool to assess the system's net present value. The analytical framework is applied to a case study of a communications satellite, with market, financial, and technical data obtained from the satellite operator, Intelsat. The case study investigates the implications of the value-centric versus the cost-centric design and acquisition choices. Results identify the ways in which value-optimal spacecraft design choices are contingent on both technical and market conditions, and that larger spacecraft for example, which reap economies of scale benefits, as reflected by their decreasing cost-per-transponder, are not always the best (most valuable) choices. Market conditions and technical constraints for which convergence occurs between design choices under a cost-centric and a value

  15. Language Sound Systems and Second Language Acquisition.

    Science.gov (United States)

    Skaer, Peter M.

    A language typology based on common errors made in pronunciation of English by speakers of other languages is presented and discussed. The classification system was developed from the concept of interlanguage, the intermediate step between a language learner's native and target languages, and the notion that interference in learning a new language…

  16. A data acquisition system for marine and ecological research.

    Science.gov (United States)

    Johnson, R. A.

    1971-01-01

    Description of a self-contained portable data acquisition system for use in marine and ecological research. The compact lightweight data acquisition system is capable of recording 14 variables in its present configuration and is suitable for use in either a boat, pickup truck, or light aircraft. This system will provide the acquisition of reliable data on the structure of the environment and the effect of man-made and natural activities on the observed phenomenon. Utilizing both self-contained analog recording and a telemetry transmitter for real-time digital readout and recording, the prototype system has undergone extensive testing. Currently undergoing component performance upgrading, the prototype system has been utilized in several environmental science investigations associated with air pollution investigations and weather modification and is currently being used for marine data acquisition.

  17. Systems Engineering Processes for the Acquisition of Prognostic and Health Management Systems

    Science.gov (United States)

    2012-09-01

    and fielded. The thesis will also identify heuristics and strategies to improve acquisition strategies for procuring PHM systems. The following...of the issues associated with the acquisition of PHM systems. Chapter V will compile the research and provide heuristics for future acquisition...which contributes to low system weight. This advanced system includes many improvements, including: • Better aircrew displays and additional

  18. A DSP controlled data acquisition system for CELSIUS

    CERN Document Server

    Bengtsson, M; Ziemann, Volker

    2000-01-01

    We describe a data acquisition system based on two 10 MHz A/D-converters, a SHARC Digital Signal Processor (DSP), and a digital synthesizer used for triggering the A/D-converters. The temporal macrostructure of the data acquisition can be determined by external triggers or by timer interrupts from the DSP. In this way up to two million samples can be stored in DSP external memory. The samples are analyzed by directly fast Fourier transforming blocks of samples. In another mode we use software-based downmixing and filtering techniques to increase the resolution and zoom in on a small frequency band. Spectra of up to 5 MHz can be manipulated and displayed as waterfall plots or spectral maps on the host computer directly. Moreover, signals of up to 70 MHz can be analyzed by undersampling techniques. We use this system to analyze Schottky spectra from electron-cooled ion beams in CELSIUS and report drag rate measurements and observations of instabilities.

  19. A DSP controlled data acquisition system for CELSIUS

    Energy Technology Data Exchange (ETDEWEB)

    Bengtsson, M.; Lofnes, T.; Ziemann, V. E-mail: ziemann@tsl.uu.se

    2000-02-21

    We describe a data acquisition system based on two 10 MHz A/D-converters, a SHARC Digital Signal Processor (DSP), and a digital synthesizer used for triggering the A/D-converters. The temporal macrostructure of the data acquisition can be determined by external triggers or by timer interrupts from the DSP. In this way up to two million samples can be stored in DSP external memory. The samples are analyzed by directly fast Fourier transforming blocks of samples. In another mode we use software-based downmixing and filtering techniques to increase the resolution and zoom in on a small frequency band. Spectra of up to 5 MHz can be manipulated and displayed as waterfall plots or spectral maps on the host computer directly. Moreover, signals of up to 70 MHz can be analyzed by undersampling techniques. We use this system to analyze Schottky spectra from electron-cooled ion beams in CELSIUS and report drag rate measurements and observations of instabilities.

  20. Data Acquisition System for Russian Arctic Magnetometer Network

    Science.gov (United States)

    Janzhura, A.; Troshichev, O. A.; Takahashi, K.

    2010-12-01

    Monitoring of magnetic activity in the auroral zone is very essential for space weather problem. The big part of northern auroral zone lies in the Russian sector of Arctica. The Russian auroral zone stations are located far from the proper infrastructure and communications, and getting the data from the stations is complicated and nontrivial task. To resolve this problem a new acquisition system for magnetometers was implemented and developed in last few years, with the magnetic data transmission in real time that is important for many forecasting purpose. The system, based on microprocessor modules, is very reliable in hush climatic conditions. The information from the magnetic sensors transmits to AARI data center by satellite communication system and is presented at AARI web pages. This equipment upgrading of Russian polar magnetometer network is supported by the international RapidMag program.

  1. Monitoring the BaBar Data Acquisition System

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The BaBar data acquisition system(DAQ)transports data from the detector front end eletronics to short term disk storage.A monitoring application(VMON)has been developed to monitor the one hundred and ninety computers in the dataflow system.Performance information for each CPU is collected and multicast across the existing data transport network.The packets are currently collected by a single UNIX workstation and archived.A ROOT based GUI provides control and displays the DAQ performance in real time.The same GUI is reused to recover archived VMON data,VMON has been deployed and constantly monitors the BaBar dataflow system.It has been used for diagnostics and provides input to models projecting future performance.The application has no measurable impact on data taking ,responds instantaneously on the human timescale to requests for information display,and uses only 3% of a 300MHz Sun Ultra5 CPU.

  2. Wide dynamic range acquisition system for innovative radiation detectors

    Energy Technology Data Exchange (ETDEWEB)

    Petasecca, M., E-mail: mauro.menichelli@pg.infn.i [Istituto Nazionale di Fisica Nucleare, Via A. Pascoli, 06123 Perugia (Italy); MAPRAD S.r.l., via Colombo 19/I, 06127 Perugia (Italy); University of Wollongong, Northfields Av., 2500 Wollongong, NSW (Australia); Alpat, B.; Ambrosi, G.; Menichelli, M.; Papi, A. [Istituto Nazionale di Fisica Nucleare, Via A. Pascoli, 06123 Perugia (Italy); Cirrone, P.; Ferrera, F.; Figuera, P.; Finocchiaro, P.; Lattuada, M.; Rifuggiato, D. [Laboratori Nazionali del Sud dell' INFN, Catania (Italy); Bizzarri, F.; Blasko, S.; Caraffini, D.; Renzi, F. [MAPRAD S.r.l., via Colombo 19/I, 06127 Perugia (Italy); Denizli, H. [Abant izzet Baysal Universitesi, Bolu (Turkey)

    2010-05-21

    There is particular interest to develop low-noise and wide dynamic range data acquisition systems for silicon detectors in view of using the same acquisition readout electronics for a wide range of application fields like monitoring and characterization of radiation sources or particle beams. In the framework of a research project for the qualification of Components Off The Shelf (COTS) for their use in space, research groups from INFN-Perugia, INFN-LNS and from MAPRAD have developed a fully automated, remote controllable, wide dynamic range acquisition system for silicon strip or pixelated detectors. Its design and a basic description of the performance are given here.

  3. 基于DSP和FPGA的汽车防撞高速数据采集系统%A high speed data acquisition system for automotive collision warning devices based on DSP-FPGA

    Institute of Scientific and Technical Information of China (English)

    蒋伟

    2012-01-01

    With the continuous development of information technology, data acquisition technology has become an important modern tool, and is also expanding its scope of application. It has been widely used in communication, radar, medical, remote sensing and other fields. This data acquisition system designed is based on a high-speed DSP-FPGA data acquisition, primarily for high-speed acquisition and processing on laser radar echo signal in automotive collision warning devices.%随着信息技术的不断发展,数据采集技术已成为重要的现代化的工具,并且其应用范围也在不断扩大,在通信、雷达、医疗、遥测遥感等领域得到了广泛的应用。本文为了汽车防撞报警设备高速信号处理的目的.采用了DSP和FPGA处理器加上相关算法,实现了对激光雷达回波信号能够高速的采集和处理。

  4. Extremelly High Bandwidth Rad Hard Data Acquisition System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Analog-to-digital converters (ADCs) are the key components for digitizing high-speed analog data in modern data acquisition systems, which is a critical part of...

  5. Novel Data Acquisition and controls System (DACS) Demonstration Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The combined data acquisition and controls architecture is eliminating the need of the widely popular programmable logic control (PLCs).   The system uses...

  6. 基于ARM工控主板的环境数据采集及无线传输系统%Environmental Data Acquisition and Wireless Transmission System Based on ARM Industrial Control Motherboard

    Institute of Scientific and Technical Information of China (English)

    马俊明; 张游杰; 边杏宾

    2014-01-01

    在传统的数据采集装置中,单片机加采集卡方式存在采集通道少、单任务及实时性差等不足;工控机加装采集卡的方式费用较高且不宜维护。由于ARM芯片体积小、价格低、可靠性高,成为当前嵌入式数据采集装置的首选。选用ARM8006工控主板,设计开发了多通道实时数据采集监控系统,开发的设备能够保证采集过程中数据的可靠性及实时性,并可将现场采集数据通过无线网络传输到上位机,整个系统实现了数据采集、显示、存储及无线传输等功能。%In the traditional data acquisition device,there are some shortages in SCM(single chip microcomputer)+AC (acquisition card) mode such as the less acquisition channels,single task, and poor real-time performance, etc.;and ICM (industrial control motherboard)+AC (acquisition card) mode is not easy to maintain and has higher cost. Because of the advantages of smaller volume,lower cost and higher reliability, the ARM chip has become the first choice of embedded data acquisition device. Based on ARM8006 industrial control motherboard,this paper develops a multi-channel real-time data acquisition and monitoring system, which can ensure the reliability and instantaneity of the data in acquisition process,and transmit the data collected in the site to the host computer through wireless network, realize the functions of the data acquisition,display,storage and wireless transmission.

  7. Effective Acquisition Strategies for Systems Engineering and Technical Assistance (SETA)

    Science.gov (United States)

    2012-07-01

    ACQUISITION STRATEGIES FOR SYSTEMS ENGINEERING AND TECHNICAL ASSISTANCE ( SETA ) By: Jacques S. Gansler, William Lucyshyn, and John Rigilano 18 56 U N IV...to 00-00-2012 4. TITLE AND SUBTITLE Effective Acquisition Strategies for Systems Engineering and Technical Assistance ( SETA ) 5a. CONTRACT NUMBER...Encourage the Development of Independent SETA firms .........................42 Option 3: Transition SETA Functions to Federally Funded Research and

  8. The data acquisition system for the ANTARES neutrino telescope

    Energy Technology Data Exchange (ETDEWEB)

    Aguilar, J.A. [IFIC, Instituto de Fisica Corpuscular, Edificios Investigacion de Paterna, CSIC, Universitat de Valencia, Apdo. de Correos 22085, 46071 Valencia (Spain); Albert, A. [GRPHE - Groupe de Recherche en Physique des Hautes Energies, Universite de Haute Alsace, 61 Rue Albert Camus, 68093 Mulhouse Cedex (France); Ameli, F. [Dipartimento di Fisica dell' Universita ' La Sapienza' e Sezione INFN, P.le Aldo Moro 2, 00185 Rome (Italy)] (and others)

    2007-01-01

    The ANTARES neutrino telescope is being constructed in the Mediterranean Sea. It consists of a large three-dimensional array of photo-multiplier tubes. The data acquisition system of the detector takes care of the digitisation of the photo-multiplier tube signals, data transport, data filtering, and data storage. The detector is operated using a control program interfaced with all elements. The design and the implementation of the data acquisition system are described.

  9. The data acquisition system for the ANTARES neutrino telescope

    CERN Document Server

    Aguilar, J A; Ameli, F; Anghinolfi, M; Anton, G; Anvar, S; Aslanides, E; Aubert, Jean-Jacques; Barbarito, E; Basa, S; Battaglieri, M; Becherini, Y; Bellotti, R; Beltramelli, J; Bertin, V; Bigi, A; Billault, M; Blaes, R; De Botton, N R; Bouwhuis, M C; Bradbury, S M; Bruijn, R; Brunner, J; Burgio, G F; Busto, J; Cafagna, F; Caillat, L; Calzas, A; Capone, A; Caponetto, L; Carmona, E; Carr, J; Cartwright, S L; Castel, D; Castorina, E; Cavasinni, V; Cecchini, S; Ceres, A; Charvis, P; Chauchot, P; Chiarusi, T; Circella, M; Colnard, C; Compere, C; Coniglione, R; Cottini, N; Coyle, P; Cuneo, S; Cussatlegras, A S; Damy, G; Van Dantzig, R; De Marzo, C; Dekeyser, I; Delagnes, E; Denans, D; Deschamps, A; Dessages-Ardellier, F; Destelle, J J; Dinkespieler, B; Distefano, C; Donzaud, C; Drogou, J F; Druillole, F; Durand, D; Ernenwein, J P; Escoffier, S; Falchini, E; Favard, S; Feinstein, F; Ferry, S; Festy, D; Fiorello, C; Flaminio, V; Galeotti, S; Gallone, J M; Giacomelli, G; Girard, N; Gojak, C; Goret, P; Graf, K; Hallewell, G D; Harakeh, M N; Hartmann, B; Heijboer, A; Heine, E; Hello, Y; Hernández-Rey, J J; Hossl, J; Hoffman, C; Hogenbirk, J; Hubbard, John R; Jaquet, M; Jaspers, M; De Jong, M; Jouvenot, F; Kalantar-Nayestanaki, N; Kappes, A; Karg, T; Karkar, S; Katz, U; Keller, P; Kok, H; Kooijman, P; Kopper, C; Korolkova, E V; Kouchner, A; Kretschmer, W; Kruijer, A; Kuch, S; Kudryavtsev, V A; Lachartre, D; Lafoux, H; Lagier, P; Lahmann, R; Lamanna, G; Lamare, P; Languillat, J C; Laschinsky, H; Le Guen, Y; Le Provost, H; Le Van-Suu, A; Legou, T; Lim, G; Lo Nigro, L; Lo Presti, D; Löhner, H; Loucatos, Sotirios S; Louis, F; Lucarelli, F; Lyashuk, V; Marcelin, M; Margiotta, A; Masullo, R; Mazéas, F; Mazure, A; McMillan, J E; Megna, R; Melissas, M; Migneco, E; Milovanovic, A; Mongelli, M; Montaruli, T; Morganti, M; Moscoso, L; Musumeci, M; Naumann, C; Naumann-Godo, M; Niess, V; Olivetto, C; Ostasch, R; Palanque-Delabrouille, Nathalie; Payre, P; Peek, H; Petta, C; Piattelli, P; Pineau, J P; Poinsignon, J; Popa, V; Pradier, T; Racca, C; Randazzo, N; Van Randwijk, J; Real, D; Van Rens, B; Rethore, F; Rewiersma, P A M; Riccobene, G; Rigaud, V; Ripani, M; Roca, V; Roda, C; Rolin, J F; Romita, M; Rose, H J; Rostovtsev, A; Roux, J; Ruppi, M; Russo, G V; Salesa, F; Salomon, K; Sapienza, P; Schmitt, F; Schuller, J P; Shanidze, R; Sokalski, I A; Spona, T; Spurio, M; van der Steenhoven, G; Stolarczyk, T; Streeb, K; Stubert, D; Sulak, L; Taiuti, M; Tamburini, C; Tao, C; Terreni, G; Thompson, L F; Valdy, P; Valente, V; Vallage, B; Venekamp, G; Verlaat, B; Vernin, P; De Vita, R; De Vries, G; Van Wijk, R F; De Witt-Huberts, P K A; Wobbe, G; De Wolf, E; Yao, A F; Zaborov, D; Zaccone, Henri; De Dios-Zornoza-Gomez, Juan; Zúñiga, J; al, et

    2006-01-01

    The ANTARES neutrino telescope is being constructed in the Mediterranean Sea. It consists of a large three-dimensional array of photo-multiplier tubes. The data acquisition system of the detector takes care of the digitisation of the photo-multiplier tube signals, data transport, data filtering, and data storage. The detector is operated using a control program interfaced with all elements. The design and the implementation of the data acquisition system are described.

  10. Accurate GPS Time-Linked data Acquisition System (ATLAS II) user's manual.

    Energy Technology Data Exchange (ETDEWEB)

    Jones, Perry L.; Zayas, Jose R.; Ortiz-Moyet, Juan (PrimeCore Systems Inc., Albuquerque, NM)

    2004-02-01

    The Accurate Time-Linked data Acquisition System (ATLAS II) is a small, lightweight, time-synchronized, robust data acquisition system that is capable of acquiring simultaneous long-term time-series data from both a wind turbine rotor and ground-based instrumentation. This document is a user's manual for the ATLAS II hardware and software. It describes the hardware and software components of ATLAS II, and explains how to install and execute the software.

  11. The Resource Manager the ATLAS Trigger and Data Acquisition System

    CERN Document Server

    Aleksandrov, Igor; The ATLAS collaboration

    2017-01-01

    The Resource Manager is one of the core components of the Data Acquisition system of the ATLAS experiment at the LHC. The Resource Manager marshals the right for applications to access resources which may exist in multiple but limited copies, in order to avoid conflicts due to program faults or operator errors. The access to resources is managed in a manner similar to what a lock manager would do in other software systems. All the available resources and their association to software processes are described in the Data Acquisition configuration database. The Resource Manager is queried about the availability of resources every time an application needs to be started. The Resource Manager’s design is based on a client-server model, hence it consists of two components: the Resource Manager "server" application and the "client" shared library. The Resource Manager server implements all the needed functionalities, while the Resource Manager client library provides remote access to the "server" (i.e., to allocat...

  12. Acquisition Management for Systems-of-Systems: Risk Dynamics and Exploratory Model Experimentation

    Science.gov (United States)

    2011-03-03

    2008. "A Network Model of H5N1 Avian Influenza Transmission Dynamics in Domestic Cats," Zoonoses and Public Health, Vol. 55, Issue 8-10, pp 497-506...research.maxwell.af.mil/papers/ay2001/acsc /01-033. pdf [accessed 26 January 2010]. Charles, P. and Turner, P., 2004. “Capabilities Based Acquisition...database]: http://www.dodccrp.org/events/10th_ICCRTS/CD/papers/063. pdf , [accessed 25 January, 2010]. Fowler, C. A. 1994. The Defense Acquisition System

  13. Data Acquisition and Transmission System for Building Energy Consumption Monitoring

    Directory of Open Access Journals (Sweden)

    Liang Zhao

    2013-01-01

    Full Text Available Building energy consumption monitoring and management system have been developed widely in China in order to gain the real-time data of energy consumption in buildings for analyzing it in the next state work. This paper describes a low-cost and small-sized collector based on the STM32 microcontroller, which can be placed in a building easily to implement the work of data acquisition, storage, and transmission. The collector gathers the electricity, water, heat, and energy consumption data through the RS485 field bus and stores the data into an SD card with mass storage, finally, using Internet to finish the communication and transmission to data server through TCP protocol. The collector has been used in application for two years, and the results show that the system is reliable and stable.

  14. Microprocessor-based data acquisition system incorporating a floating-point arithmetic unit for complex mathematical computations. [To determine thickness of conductors on printed wiring boards from measured resistance by use of curve-fitting equations

    Energy Technology Data Exchange (ETDEWEB)

    Hopwood, J.

    1978-02-01

    A microprocessor-based, stored-program controller which incorporates a floating-point arithmetic unit to perform complex mathematical computations was developed to determine the thickness of conductors on printed wiring boards. Conductor thickness is calculated from measured resistance by means of curve-fitting equations in the stored program. Called a film thickness calculator, the instrument demonstrates a method which may serve as a basis for other designs involving microprocessor-based data acquisition systems requiring low-speed calculations. 19 figures.

  15. Resource-based theory and mergers & acquisitions success

    OpenAIRE

    Grill, Plina; Bresser, Rudi K. F.

    2011-01-01

    Mergers & acquisitions (M&A) are most popular external growth strategies. While the number of M&A has been increasing during the past decades, on average, only the shareholders of target firms gain value during the acquisitions process, while acquirers do not receive abnormal positive returns. This paper analyses the impact of strategically valuable resources on the success of M&A decisions. We test complementary resource-based hypotheses regarding the value of M&A for the shareholders of bot...

  16. Fast Frequency Offset Acquisition and Accurate Tracking in OFDM Systems

    Institute of Scientific and Technical Information of China (English)

    ZHANG Zhong-shan; ZHAO Ming; LIU Yuan-an

    2004-01-01

    A new carrier frequency offset estimation scheme for Orthogonal Frequency-Division Multiplexing (OFDM) systems is proposed. The carrier frequency offset estimation includes acquisition and tracking. The acquisition range of the proposed algorithm is as large as one half of the overall signal bandwidth. Comparison of the proposed scheme with Schmidl's algorithm by computer simulation illustrates the superior performance of the proposed scheme with regard to estimation accuracy in both AWGN channel and multipath channels.

  17. Managing Information Systems Integration in Corporate Mergers and Acquisitions

    OpenAIRE

    Henningsson, Stefan

    2008-01-01

    Corporate mergers and acquisitions (M&As) have during the last decade established themselves as prominent tools for corporate strategy. Consequently, more and more organizations direct their attention towards the potential benefits of a corporate merger and acquisition (M&A) and the problems of leveraging the potentials. This thesis addresses information systems (IS) integration in the context of M&As. It seeks to enhance the understanding of how IS integration relates to the M&am...

  18. 基于PMAC的线切割数控系统中数据采集与实时显示%Data Acquisition and Real-time Display in CNC System of Wire Cutting Based on PMAC

    Institute of Scientific and Technical Information of China (English)

    郑华林; 于玺; 潘盛湖; 贾正首

    2012-01-01

    In order to resolve the problem of data acquisition and real-time display in the design of CNC system, based on introducing the method of PMAC data acquisition, the theory of communication between Win32 applications and PMAC was highlighted. The method of PMAC data acquisition and real-time display under the environment of Visual C ++ was introduced. A satisfactory result is achieved by applying this technology to the development of CNC system of wire cutting.%为了解决数控系统开发中数据采集与实时显示的问题,在介绍PMAC数据采集方法的基础上,重点说明Win32应用程序与PMAC之间通讯的原理,同时介绍了在VC++环境下利用PMAC进行数据采集与实时显示的方法.并在线切割数控系统的开发中利用该技术,获得了满意的效果.

  19. 基于3G无线网络的风电机组远程数据采集系统设计%Design of Data Acquisition System for Wind Turbine Based on 3G Wireless Network

    Institute of Scientific and Technical Information of China (English)

    吴光宇

    2015-01-01

    文章提出一种基于3G无线网络来实现风电机组远程数据采集的方法。结合风力发电机组环境特点和运行要求,利用Visual Studio 2010软件,设计开发适用于该数据采集系统的软件,实现机组各项参数的远距离实时采集,顺利实现了风电机组长距离跨地区的实时监控。%The method to realize remote data acquisition for wind turbine that based on 3G wireless network is proposed.Combined with the characteristics and running environment of wind turbine,the data acquisition system software is designed and developed using Visual Studio 2010 software.The system cans remote acquisition parameters real-time,and real time monitoring of wind turbine long distance and cross area is achieved.

  20. Facilities and the Air Force Systems Acquisition Process.

    Science.gov (United States)

    1985-05-01

    to provide es- senti-l fLcilitio-s by, system Initial Cperatlcnal Capability (’-0C) . And secondly, vince the systems ;acjui. tior proceso is event...funds exclusively for systems acquisition. This change will remove the current military construction calendar constraint and allow facilities to be

  1. Review of Supervisory Control and Data Acquisition (SCADA) Systems

    Energy Technology Data Exchange (ETDEWEB)

    Reva Nickelson; Briam Johnson; Ken Barnes

    2004-01-01

    A review using open source information was performed to obtain data related to Supervisory Control and Data Acquisition (SCADA) systems used to supervise and control domestic electric power generation, transmission, and distribution. This report provides the technical details for the types of systems used, system disposal, cyber and physical security measures, network connections, and a gap analysis of SCADA security holes.

  2. Data acquisition system for KOMAC beam monitoring using EPICS middleware

    Science.gov (United States)

    Song, Young-Gi

    2015-10-01

    The beam diagnostics instrument used to measure the beam properties is one of the important devices for the 100-MeV proton linear accelerator of the KOrea Multi-purpose Accelerator Complex (KOMAC). A data acquisition system (DAQ) is required to collect the output beam signals conditioned in the analog front-end circuitry of a beam loss monitor (BLM) and a beam position monitor (BPM). The electrical beam signal must be digitized, and the sampling has to be synchronized to a global timing system that produces a pulse signal for the pulsed beam operation. The digitized data must be accessible by the experimental physics and industrial control system (EPICS)-based control system, which manages all accelerator control. An input output controller (IOC), which runs Linux on a central process unit (CPU) module with a peripheral component interconnect (PCI) express-based Analog-to-digital converter (ADC) card, has been adopted to satisfy the requirements. An associated Linux driver and EPICS device support module have also been developed. The IOC meets the requirements, and the development and maintenance of software for the IOC is very efficient. In this paper, the details of the DAQ system for the BLM and the BPM with the introduction of the KOMAC beam-diagnostics devices, along with the performance, are described.

  3. 基于ZigBee技术的嵌入式Web数据采集系统的研究与应用%Research and application of embedded Web data acquisition system based on ZigBee technology

    Institute of Scientific and Technical Information of China (English)

    王正万; 李远英

    2016-01-01

    This paper aiming at the defects of wired data acquisition of high cost, not easy to expand, poor mobility,the design and implementation of a low rate, short distance wireless data acquisition system, low complexity, low cost, low power consumption based on ZigBee technology. The main content of this thesis is the wireless sensor network data acquisition system of ZigBee wireless microcontroller CC2530 sensor module based on paper. Is composed of a plurality of ZigBee wireless sensor data acquisition node data collected by the embedded Webserver into the Internet network, the embedded Web server uses 32 bit S3C2440 embedded processor and Linuxoperating system of ARM9 structure, which is mainly to achieve Internet access, data acquisition processing and storage.%本文针对有线数据采集方式成本高、不易扩展、移动性差等缺陷,设计并实现了一个基于ZigBee技术的低速率、近距离、低复杂度、低成本、低功耗的无线数据采集系统。本文研究的内容主要是文研究的基于ZigBee无线单片机CC2530传感器模块组成的无线传感网络数据采集系统。由若干个ZigBee无线传感器数据采集节点采集的数据经嵌入式Web服务器进入Internet网,嵌入式Web服务器采用ARM9结构的32位嵌入式处理器S3C2440和Linux操作系统,它主要实现Internet接入,采集数据的处理与存储等。

  4. Driver performance data acquisition system for ergonomics research

    Energy Technology Data Exchange (ETDEWEB)

    Carter, R.J. [Oak Ridge National Lab., TN (United States). Engineering Physics and Mathematics Div.; Goodman, M.J. [National Highway Traffic Safety Administration, Washington, DC (United States). Office of Crash Avoidance Research

    1994-12-31

    A portable ergonomics data acquisition system consisting of state-of-the-art hardware being designed is described here. It will be employed to record driver, vehicle, and environment parameter data from a wide range of vehicles and trucks. The system will be unobtrusive to the driver and inconspicuous to the outside world. It will have three modes of data gathering and provide for extended periods of data collection. Modularity, flexibility, and cost will be key drivers in the development effort. The ergonomics data acquisition system project is being conducted in two phases--a feasibility study and a development, construction, and validation phase.

  5. Parallel data acquisition system for electron momentum spectrometer

    CERN Document Server

    Pang, W N

    1999-01-01

    A parallel data acquisition system has been developed for the study of electron impact ionization of atoms and molecules. The system has a large data storage capacity providing good experimental resolution and system flexibility. The system is used to collect and analyze data from electron momentum spectroscopy experiment. Results from electron momentum spectroscopy experiments on C sub 4 H sub 1 sub 0 molecules, at an incident energy of 1200 eV, are presented to demonstrate the performance of the system. (author)

  6. A Labview based FPGA data acquisition with integrated stage and beam transport control

    Energy Technology Data Exchange (ETDEWEB)

    Laird, J.S., E-mail: csirojamie@gmail.com [CSIRO, Earth Science and Resource Engineering, Clayton, Victoria (Australia); Centre of Excellence in Ore Deposits (CODES), University of Tasmania, Hobart, Tasmania (Australia); School of Physics, University of Melbourne, Parkville 3010, Victoria (Australia); Szymanski, R. [School of Physics, University of Melbourne, Parkville 3010, Victoria (Australia); Ryan, C.G. [CSIRO, Earth Science and Resource Engineering, Clayton, Victoria (Australia); Centre of Excellence in Ore Deposits (CODES), University of Tasmania, Hobart, Tasmania (Australia); School of Physics, University of Melbourne, Parkville 3010, Victoria (Australia); Gonzalez-Alvarez, I. [CSIRO, Earth Science and Resource Engineering, Kensington, Western Australia (Australia)

    2013-07-01

    We report on a new FPGA based data acquisition system developed for the CSIRO Nuclear Microprobe (NMP) which is tightly integrated with both target positioning and beam transport. The data acquisition system called MicrodaQ is based on National Instruments Labview FPGA and numerous instrumentation modules spread over several PC’s. Beam transport uses a feedback control loop to optimise current on target for long unmanned experiments. These upgrades are discussed in detail and an example of the systems use for μ-Particle Induced X-ray Emission (PIXE) analysis on a Doriri apatite is briefly described.

  7. 基于STM32的铯光泵磁力仪数据采集系统%Data Acquisition System of Cesium Optical-pump Magnetometer Based on STM32

    Institute of Scientific and Technical Information of China (English)

    彭俊杰; 陈永泰

    2016-01-01

    文中针对铯光泵磁力仪,设计了一种基于STM32F103ZET6处理器和现场可编辑门阵列(FP-GA)的数据采集系统,实现了对输出信号采集后的高精度测量,并且利用传感器实现了对铯光泵磁力仪的探头姿态检测.文中简要介绍了铯光泵磁力仪的基本原理和系统结构.重点针对数据采集系统的要求,介绍了该系统软件设计思路和具体细节.经过实验验证,系统样机基本工作状态良好,达到设计要求.%Aiming at cesium optical-pump magnetometer, a data acquisition system based on STM32F103ZET6 and FPGA was designed, which realized high precision measurement of the output signal and attitude detection of magnetometer probe by u-sing a sensor . Cesium optical-pump magnetometer measurement principle and system circuit structure were briefly introduced firstly. Then the requirements for the data acquisition system was focused on and how to design the various modules of the circuit was introduced. After that ,the ideas of system software design was analyzed and described in detail .The results show that the da-ta acquisition system is in good working order and can meet design requirements well.

  8. Migrating Legacy Systems in the Global Merger & Acquisition Environment

    Science.gov (United States)

    Katerattanakul, Pairin; Kam, Hwee-Joo; Lee, James J.; Hong, Soongoo

    2009-01-01

    The MetaFrame system migration project at WorldPharma, while driven by merger and acquisition, had faced complexities caused by both technical challenges and organizational issues in the climate of uncertainties. However, WorldPharma still insisted on instigating this post-merger system migration project. This project served to (1) consolidate the…

  9. A data acquisition system for water heating and cooling experiments

    Science.gov (United States)

    Perea Martins, J. E. M.

    2017-01-01

    This work presents a simple analogue waterproof temperature probe design and its electronic interfacing with a computer to compose a data acquisition system for water temperature measurement. It also demonstrates the system usage through an experiment to verify the water heating period with an electric heater and another to verify the Newton’s law of cooling

  10. College Bibliocentre Acquisition and Accounting System Description Manual.

    Science.gov (United States)

    College Bibliocentre, Don Mills (Ontario).

    The Acquisition and Accounting System is a complex designed to perform all functions in the following areas: (1) ordering; (2) receipt, shipment and cancellation; (3) accounts payable, (4) invoicing, (5) order status, (6) inventory, (7) college budgeting and (8) management information reports. Some of the benefits that accrue from the system are:…

  11. Internal Control, Auditing, and the Automated Acquisitions System.

    Science.gov (United States)

    Hawks, Carol Pitts

    1990-01-01

    Discusses issues and procedures involved in auditing the automated acquisitions system at Ohio State University Libraries. The audit process is explained, internal controls within the system are identified, general control mechanisms such as limited electronic access are discussed, and application control mechanisms that relate to specific…

  12. Underspecification-Based Grammatical Feedback Generation Tailored to the Learner's Current Acquisition Level in an e-Learning System for German as Second Language

    Science.gov (United States)

    Harbusch, Karin; Cameran, Christel-Joy; Härtel, Johannes

    2014-01-01

    We present a new feedback strategy implemented in a natural language generation-based e-learning system for German as a second language (L2). Although the system recognizes a large proportion of the grammar errors in learner-produced written sentences, its automatically generated feedback only addresses errors against rules that are relevant at…

  13. 基于FPGA的白光干涉仪数据采集系统的设计%White-light Interferometer Data Acquisition System Based on FPGA Design

    Institute of Scientific and Technical Information of China (English)

    邓志; 王耘波; 高俊雄; 郑世涛

    2012-01-01

    In order to analyze the interference fringes of white-light interference, a FPGA-core data acquisition system is designed in this paper. It produces bright and dark interference fringes, when the low coherent white-light source displays interference effect. Physical data can be accurately measured through the measurement and analysis of interference fringes. By using FPGA as a host controller, as well as CCD sampling, AD conversion, FIFO internal storage, the entire system transmits the interference data to PC in real time and at a high speed, to digitally process white-light interference signal.%为了对白光干涉仪的干涉条纹进行分析处理,该文设计了一种以FPGA为核心的数据采集系统.低相干白光光源在发生干涉后,会形成明暗相间的干涉条纹.通过对于涉条纹测量分析,就能对数据进行精确的测量.整个系统以FPGA作为主控制器,配以CCD采样,AD模数转换,内部FIFO存储、以太网高速传输,从而把干涉数据实时传送到上位机中,具有传输速度快,效率高等优点,实现了白光干涉信号的数字化处理.

  14. 基于导航卫星信号的采集系统设计与实现%The Design and Implementation of the data Acquisition System based on the Navigation Satellite Signal

    Institute of Scientific and Technical Information of China (English)

    李献球

    2012-01-01

    A satellite signal data acquisition system integrated with functions of data acquisition,signal processing, data storage and signal playback, based on the demands of the navigation satellite signal monitoring. The system' s structure is based on PCIe and its full - duplex bandwidth can achieve 900MB; the data acquisition module can deal with 480MB sustained data stream and extra 480MB burst data stream; the signal processing module adopt FPGA + DSP to operate data; the data storage structure is complete solid, which replaces the traditional magnetic disk by flash array;the signal playback module playback data with bandwidth 960MB through PCIe. Hie system can apply for fields including radar and detection with the merits of high performance and high integrity.%针对导航卫星信号监测的新要求,提出一种集成了数据采集、处理、存储和回放功能的一体化卫星信号采集系统.该系统采用PCIe架构,系统带宽可达到全双工900MB;数据采集480MB持续数据,以及480MB突发数据;数据处理采用FPGA+ DSP联合架构,完成对数据实时处理;存储采用全固态结构,用Flash代替传统的磁盘存储;并且能够通过PCIe接口完成960MB带宽的数据回放.该系统具有性能高、集成度高的优点,可以运用在雷达、侦查等高端领域.

  15. Microcontroller Based Data Acquisition And Supervision

    Directory of Open Access Journals (Sweden)

    Ishaan Dua

    2015-05-01

    Full Text Available ABSTRACT In this research paper we have designed a system that acts as a temperature sensor and also a warning system the system also has the facilitation of shutting down the machinery whose temperature is to be monitored. The main function of the system is to constantly monitor the temperature of a machine compare it to a predefined limit and shut down the machine if the temperature exceeds or falls below that limit. The system is highly useful for systems with high dependence on particular temperatures. The paper includes the requirement of such a system along with the idea behind development of the project. We have covered the hardware and software requirements for designing such a system. The paper covers the basic design of the project along with the block diagram. We have divided the entire design into sub circuits that cover the bridge rectifier relay driver and A to D convertor. We have covered the software simulation of the sub circuits. The results of the simulations have been compared to the expected outcome and so we know that the design is working properly.

  16. Data acquisition system for a proton imaging apparatus

    CERN Document Server

    Sipala, V; Bruzzi, M; Bucciolini, M; Candiano, G; Capineri, L; Cirrone, G A P; Civinini, C; Cuttone, G; Lo Presti, D; Marrazzo, L; Mazzaglia, E; Menichelli, D; Randazzo, N; Talamonti, C; Tesi, M; Valentini, S

    2009-01-01

    New developments in the proton-therapy field for cancer treatments, leaded Italian physics researchers to realize a proton imaging apparatus consisting of a silicon microstrip tracker to reconstruct the proton trajectories and a calorimeter to measure their residual energy. For clinical requirements, the detectors used and the data acquisition system should be able to sustain about 1 MHz proton rate. The tracker read-out, using an ASICs developed by the collaboration, acquires the signals detector and sends data in parallel to an FPGA. The YAG:Ce calorimeter generates also the global trigger. The data acquisition system and the results obtained in the calibration phase are presented and discussed.

  17. Study and design of a cryogenic propellant acquisition system

    Science.gov (United States)

    Burge, G. W.; Blackmon, J. B.

    1973-01-01

    The development of an acquisition system for supplying subcooled liquid hydrogen and liquid oxygen under in-orbit conditions is discussed. The system will be applied to the integrated cryogenic feed requirements for space systems such as a space shuttle cryogenic auxiliary propulsion system (APS) and main propulsion for an advanced spacecraft propulsion module (ASPM). Concepts that use the favorable surface tension characteristics of fine mesh screens are emphasized. The specific objectives of the program are: (1) to evolve conceptual designs for candidate acquisition systems, (2) to formulate the analytical models needed to analyze the systems, and (3) to generate parametric data on overall candidate system performance, characteristics, and operational features in sufficient depth to establish critical design problems and criteria to support a sound system design and evaluation.

  18. A flexible computerized system for environmental data acquisition and transmission

    Science.gov (United States)

    Zappalà, G.

    2009-04-01

    In recent years increasing importance has been addressed to the knowledge of the marine environment, either to help detecting and understanding global climate change phenomena, or to protect and preserve those coastal areas, where multiple interests converge (linked to the tourism, recreational or productive activities…) and which suffer greater impact from anthropogenic activities; this has in turn stimulated the start of research programs devoted to the monitoring and surveillance of these particular zones, coupling the needs for knowledge, sustainable development and exploitation of natural resources. There is an increasing need to have data available in real time or near real time in order to intervene in emergency situations. Cabled or wireless data transmission can be used. The first allows the transmission of a higher amount of data only in coastal sites, while the second gives a bigger flexibility in terms of application to different environments; more, using mobile phone services (either terrestrial or satellite), it is possible to allocate the data centre in the most convenient place, without any need of proximity to the sea. Traditional oceanographic techniques, based on ship surveys, hardly fit the needs of operational oceanography, because of their high cost and fragmentary nature, both in spatial and temporal domains. To obtain a good synopticity, it is necessary to complement traditional ship observations with measurements from fixed stations (buoys moored in sites chosen to be representative of wider areas, or to constitute a sentinel against the arrival of pollutants), satellite observations, use of ships of opportunity and of newly developed instruments, like the gliders, or towed sliding devices, like the SAVE. Modern instruments rely on an electronic heart; an integrated hardware-software system developed in Messina is here presented, used in various versions to control data acquisition and transmission on buoys or on ship-based

  19. Design of Data Acquisition System Based on LabVIEW For Hybrid Energy Automobile%基于LabVIEW的复合能源电动汽车数据采集系统的设计

    Institute of Scientific and Technical Information of China (English)

    朱洪波; 康龙云; 杨会州

    2011-01-01

    To evaluate the performance of hybrid energy automobile and to optimize the control strategy of hy brid energy management system, a data acquisition system based on LabVIEW is designed, including data ac quisition card, sensors, signal conditioning circuit, main program. This system can achieve the functions of data acquisition, analysis, display and storage of operational parameters of hybrid energy automobile. Furthermore, to improve calculation accuracy of vehicle speed signal, a method of velocity measuring which the sampling fre quency can be adjusted according to the vehicle speed is proposed. At last, the experiment that has taken on the hybrid energy automobile indicates that the system can realize data acquisition exactly.%为了评价复合能源电动汽车的性能以及优化复合能源管理系统的控制策略,设计了一种基于LabVIEW的数据采集系统,主要包括传感器、数据采集卡、信号调理电路、系统主程序.本系统实现了对复合能源电动汽车运行参数的采集、分析、显示和存储.此外,为了提高车速信号的计算精度,提出了一种可以根据车速调整采样频率的测速方法.最后在复合能源电动车上进行了实验,结果表明,系统能够对信号进行准确采集.

  20. 基于 DSP +USB 的放射性污染监测现场数据采集系统设计%Design of Radioactive Pollution Monitoring Data Acquisition System Based on DSP+USB

    Institute of Scientific and Technical Information of China (English)

    罗勇; 庹先国; 王磊; 张力

    2014-01-01

    针对放射性污染监测现场对现场数据高速、实时采集的需求,设计了一种基于DSP和USB 2.0为核心的放射性信号数据采集系统,并介绍了该系统的总体结构和具体的软硬件实现方案。该系统将DSP高速的运算速度和数据处理能力、FPGA强大的逻辑处理能力以及USB高速传输速度相结合,构建了一套高速实时的放射性数据采集系统,具有速度快、逻辑处理能力强、稳定性高等优点,该系统在现场测试表现出较好的效果。%Focusing on the requests of high speed and real-time acquisition for data in radioactive contamina-tion monitoring site, this project designed data acquisition system of radioactive signal based on DSP and USB 2.0 as foundation, and it also briefly introduced its whole structure and both software and hardware implementa-tion scheme.This system combined the ability of computation speed and data processing from DSP and the abil-ity of excellent logical processing from FPGA and high transmission speed from USB, which created a complete high speed and real-time system for radioactive data acquisition and this system obviously has properties with high speed, excellent logical processing and stability, especially it was able to perfectly perform in site testing.

  1. FireSignal-Data acquisition and control system software

    Energy Technology Data Exchange (ETDEWEB)

    Neto, A. [Associacao Euratom/IST, Centro de Fusao Nuclear, Av. Rovisco Pais, P-1049-001 Lisboa (Portugal)], E-mail: andre.neto@cfn.ist.utl.pt; Fernandes, H.; Duarte, A.; Carvalho, B.B.; Sousa, J.; Valcarcel, D.F. [Associacao Euratom/IST, Centro de Fusao Nuclear, Av. Rovisco Pais, P-1049-001 Lisboa (Portugal); Hron, M. [Asociace EURATOM IPP.CR, Prague (Czech Republic); Varandas, C.A.F. [Associacao Euratom/IST, Centro de Fusao Nuclear, Av. Rovisco Pais, P-1049-001 Lisboa (Portugal)

    2007-10-15

    Control of fusion experiments requires non-ambiguous, easy to use, user-interfaces to configure hardware devices. With that aim, a highly generic system for data control and acquisition has been developed. Among the main features it allows remote hardware configuration, shot launching, data sharing between connected users and experiment monitoring. The system is fully distributed: the hardware driver nodes, clients and servers are completely independent from each other and might run in different operating systems and programmed in different languages. All the communication is provided through the Common Object Request Broker Architecture (CORBA) protocol. FireSignal is designed to be as independent as possible from any kind of constraints as it is a plugin based system. Database, data viewers and the security system are some examples of what can easily be changed and adapted to the target machine's needs. In this system, every hardware is described in eXtensible Markup Language (XML) and with this information Graphical User Interfaces (GUI) are automatically built and user's parameter configuration validated. Any type of hardware device can be integrated in the system as long as it is described in XML and the respective driver developed. Any modern programming language can be used to develop these drivers. Currently Python and Java generic drivers are used. Data storage and indexing is time stamp event-based. Nodes are responsible for tagging the acquired samples with the absolute time stamps and to react to machine events. FireSignal is currently being used to control the ISTTOK/PT and CASTOR/CZ tokamaks.

  2. [External contour acquisition system for radiotherapy: an original solution].

    Science.gov (United States)

    Létourneau, D; Brochet, F; Bohémier, R; Gagnon, J

    2000-01-01

    A contour acquisition system has been designed in radiotherapy at the Sagamie Hospital complex (Chicoutimi, Québec) to measure the external contours of the patients who do not need a CT exam. This measuring system can produce transversal, sagittal or coronal patient contours in the treatment position. The absolute accuracy of the system is +/- 1 mm. The contours produced by this equipment can be transferred electronically or on paper to the planning system.

  3. Data Acquisition and Control System for High-Performance Large-Area CCD Systems

    CERN Document Server

    Afanasieva, I V

    2015-01-01

    Astronomical CCD systems based on second-generation DINACON controllers were developed at the SAO RAS Advanced Design Laboratory more than seven years ago and since then have been in constant operation at the 6-meter and Zeiss-1000 telescopes. Such systems use monolithic large-area CCDs. We describe the software developed for the control of a family of large-area CCD systems equipped with a DINACON-II controller. The software suite serves for acquisition, primary reduction, visualization, and storage of video data, and also for the control, setup, and diagnostics of the CCD system.

  4. Design of Transmission Line Fault Location System Based on High Speed Data Acquisition Card%基于高速数据采集卡的输电线路故障定位系统设计

    Institute of Scientific and Technical Information of China (English)

    张运周

    2014-01-01

    In order to make the transmission line in a short time with minimal manpower, troubleshooting, design a set of transmission lines fault location system based on high speed data acquisition card with single terminal traveling wave . The system is composed of high speed data acquisition device and system analysis software. The system can eliminate the hidden trouble, reduce the power outage, reduce outage time, improve the reliability of power supply.%为了使输电线路在短时间内以最小的人力、物力排除故障,设计了一套基于高速数据采集卡的输电线路单端行波在线故障定位系统。系统由高速数据采集装置和系统分析软件构成,可消除输电线路隐患、缩小停电范围、减少停电时间,提高供电可靠性。

  5. Distributed data acquisition system for Pachmarhi array of Cverenkov telescopes

    Science.gov (United States)

    Upadhya, S. S.; Acharya, B. S.; Bhat, P. N.; Chitnis, V. R.; D'Souza, A. I.; Francis, P. J.; Gothe, K. S.; Joshi, S. R.; Majumdar, P.; Manogaran, M.; Nagesh, B. K.; Pose, M. S.; Purohit, P. N.; Rahman, M. A.; Rao, K. K.; Rao, S. K.; Sharma, S. K.; Singh, B. B.; Stanislaus, A. J.; Sudersanan, P. V.; Venkatesh Murthy, B. L.; Vishwanath, P. R.

    2002-03-01

    Pachmarhi Array of Cverenkov Telescopes consists of 25 Telescopes distributed within an area of 8000m2. The array was designed to detect and process faint Cverenkov light flashes that lasts for a few nanoseconds, produced in the atmosphere by celestial VHE ?-rays or cosmic rays. In this experiment, the arrival time and amplitude of fast tiny pulses have to be measured and recorded from each of 175 photo-tubes in a shortest possible time. In view of the complexity of the system, the entire array is divided into 4 sectors. A Distributed Data Acquisition System developed for the purpose consists of independent Sector Data Acquisition Systems and a Master Data Acquisition System. The distributed data acquisition and monitoring system are built using PC's which are networked through LAN. The entire software for DDAS was developed in-house in C language under LINUX environment. Also, most of the hardware barring a few fast digitization modules were designed and fabricated in-house. The design features, implementation strategy as well as the performance of the whole system are discussed.

  6. Remote Control for the HT-7 Distributed Data Acquisition System

    Institute of Scientific and Technical Information of China (English)

    岳冬利; 罗家融; 王枫; 朱琳

    2003-01-01

    HT-7 is the first superconducting tokamak device for fusion research in China. Manyexperiments have been done in the machine since 1994, and lots of satisfactory results have beenachieved in the fusion research field on HT-7 tokamak [1]. With the development of fusion re-search, remote control of experiment becomes more and more important to improve experimentalefficiency and expand research results. This paper will describe a RCS (Remote Control System),the combined model of Browser/Server and Client/Server, based on Internet of HT-7 distributeddata acquisition system (HT7DAS). By means of RCS, authorized users all over the world cancontrol and configure HT7DAS remotely. The RCS is designed to improve the flexibility, open-ing, reliability and efficiency of HT7DAS. In the paper, the whole process of design along withimplementation of the system and some key items are discussed in detail. The System has beensuccessfully operated during HT-7 experiment in 2002 campaign period.

  7. Reduced rectal toxicity with ultrasound-based image guided radiotherapy using BAT trademark (B-mode acquisition and targeting system) for prostate cancer

    Energy Technology Data Exchange (ETDEWEB)

    Bohrer, Markus; Schroeder, Peter; Welzel, Grit; Wertz, Hansjoerg; Lohr, Frank; Wenz, Frederik; Mai, Sabine Kathrin [University Medical Center, Mannheim (Germany). Dept. of Radiation Oncology

    2008-12-15

    To evaluate the effect of image guided radiotherapy with stereotactic ultrasound BAT (B-mode acquisition and targeting system) on rectal toxicity in conformal radiotherapy of prostate cancer. Patients and Methods 42 sequential patients with prostate cancer undergoing radiotherapy before and after the introduction of BAT were included. Planning computed tomography (CT) was performed with empty rectum and moderately filled bladder. The planning target volume (PTV) included the prostate and seminal vesicles with a safety margin of 1.5 cm in anterior and lateral direction. In posterior direction the anterior 1/3 of the rectum circumference were included. Total dose was 66 Gy and a boost of 4 Gy excluding the seminal vesicles. 22 patients (BAT group) were treated with daily stereotactic ultrasound positioning, for the other 20 patients (NoBAT group) an EPID (electronic portal imaging device) was performed once a week. Acute and late genito-urinary (GU) and rectal toxicity and PSA values were evaluated after 1.5, 3, 6, 9 and 12 months. The total median follow up of toxicity was 3 years in the BAT group and 4 years in the NoBAT group. Results In the NoBAT group significant more rectal toxicity occurred, while in GU toxicity no difference was seen. Two patients in the NoBAT group showed late rectal toxicity grade 3, no toxicity > grade 2 occurred in the BAT group. There was no significant difference in PSA reduction between the groups. Conclusion Without BAT significant more acute and a trend to more late rectal toxicity was found. With regard to dose escalation this aspect is currently evaluated with a larger number of patients using intensity-modulated radiotherapy (IMRT). (orig.)

  8. Use of Low-Cost Acquisition Systems with an Embedded Linux Device for Volcanic Monitoring

    Directory of Open Access Journals (Sweden)

    David Moure

    2015-08-01

    Full Text Available This paper describes the development of a low-cost multiparameter acquisition system for volcanic monitoring that is applicable to gravimetry and geodesy, as well as to the visual monitoring of volcanic activity. The acquisition system was developed using a System on a Chip (SoC Broadcom BCM2835 Linux operating system (based on DebianTM that allows for the construction of a complete monitoring system offering multiple possibilities for storage, data-processing, configuration, and the real-time monitoring of volcanic activity. This multiparametric acquisition system was developed with a software environment, as well as with different hardware modules designed for each parameter to be monitored. The device presented here has been used and validated under different scenarios for monitoring ocean tides, ground deformation, and gravity, as well as for monitoring with images the island of Tenerife and ground deformation on the island of El Hierro.

  9. Use of Low-Cost Acquisition Systems with an Embedded Linux Device for Volcanic Monitoring.

    Science.gov (United States)

    Moure, David; Torres, Pedro; Casas, Benito; Toma, Daniel; Blanco, María José; Del Río, Joaquín; Manuel, Antoni

    2015-08-19

    This paper describes the development of a low-cost multiparameter acquisition system for volcanic monitoring that is applicable to gravimetry and geodesy, as well as to the visual monitoring of volcanic activity. The acquisition system was developed using a System on a Chip (SoC) Broadcom BCM2835 Linux operating system (based on DebianTM) that allows for the construction of a complete monitoring system offering multiple possibilities for storage, data-processing, configuration, and the real-time monitoring of volcanic activity. This multiparametric acquisition system was developed with a software environment, as well as with different hardware modules designed for each parameter to be monitored. The device presented here has been used and validated under different scenarios for monitoring ocean tides, ground deformation, and gravity, as well as for monitoring with images the island of Tenerife and ground deformation on the island of El Hierro.

  10. Data acquisition systems from fundamentals to applied design

    CERN Document Server

    Di Paolo Emilio, Maurizio

    2013-01-01

    This book describes the fundamentals of data acquisition systems, how they enable users to sample signals that measure real physical conditions and convert the resulting samples into digital, numeric values that can be analyzed by a computer. The author takes a problem-solving approach to data acquisition, providing the tools engineers need to use the concepts introduced.  Coverage includes sensors that convert physical parameters to electrical signals, signal conditioning circuitry to convert sensor signals into a form that can be converted to digital values and analog-to-digital converters, which convert conditioned sensor signals to digital values. Readers will benefit from the hands-on approach, culminating with data acquisition projects, including hardware and software needed to build data acquisition systems.     ·         Describes fundamentals of data acquisition in an accessible manner; ·         Takes a problem-solving approach to the topic, offering a hands-on guide for practic...

  11. A comparative analysis of the resources required for test and evaluation on Army-led weapon system programs, based upon program size and acquisition management complexity

    OpenAIRE

    Johnson, Arne A.; Philistine, John J.

    2007-01-01

    Joint Applied Project Test and Evaluation (TandE) is an integral part of every acquisition program, as such, it consumes considerable program resources. The Department of Defense (DoD) TandE program management requirements are written to meet the risk reduction needs of large acquisition programs, but do not provide the details needed to consistently scale TandE management efforts for smaller programs across DoD. This research study investigates ways that the TandE burden to programs d...

  12. Human Systems Integration (HSI) in Acquisition

    Science.gov (United States)

    2009-08-01

    Cost/Risk Drivers The numbers in the Activities boxes correspond to the numbers In the Inputs and Outputs boxes. Tools: ● CATIA ● HSI Requirements...Technology Development Phase (Inputs) Human Systems Integration Tools: ● IMPRINT ● CATIA ● IPME References: ● DODI 5000.02 & DODD 5000.01 ● DAG ● CJCSI...Human Systems Integration Tools: ● IMPRINT ● CATIA ● IPME Activities for Each Output: 1.0 Incorporate domain considerations into baseline

  13. The Resource-Based Horizontal Acquisition Strategy of JBS

    OpenAIRE

    Ronald Jean Degen

    2012-01-01

    This paper examines the resource-based horizontal acquisition strategy of JBS. This strategy transformed a relatively small business that was founded in 1953 (comprising a butcher shop and small abattoir located in a small town in the interior of Brazil) into the world?s biggest meat producer by 2010.

  14. [Study for phagaquosonogram acquisition module based on DSP].

    Science.gov (United States)

    Lu, Qiang; Guo, Yong-Xin; Zhang, Guang-Yu; Cui, Dong; Wang, Shi-Gang; Jiao, Qing

    2009-07-01

    In this paper, a phagaquosonogram acquisition, a module with TMS320C6713 as a core, and USB as communicating pattern is introduced based on VC++6.0. The structure of the module, hardware configuration, software design and the experiment of the real phagaquosonogram signal collection are presented. It is shown that the module can extract human phagaquosonogram signal reliably and availably.

  15. Test Data Acquisition and Processing of a Piezo Film-based Vehicle Dynamic Weighing System%基于压电薄膜的车辆动态称重系统数据采集及处理

    Institute of Scientific and Technical Information of China (English)

    陶秀; 刘礼勇; 陶圣

    2011-01-01

    介绍了基于压电薄膜的车辆动态称重系统数据采集前端的信号调理电路,针对传感器信号进行了处理及分析,着重介绍数据滤波以及系统试验方案,并给出了整个系统的程序流程图.%In this paper, the data acquisition signal conditioning circuit of a piezo film-based vehicle dynamic weighing system was introduced. Moreover, the sensor signals were processed and analyzed, with focus on data filtering and system test plan. Finally, the procedure for the whole system flowchart was also presented.

  16. Wireless Data Acquisition System Based on LabVIEW and Wi-Fi Technology%基于LabVIEW和Wi-Fi技术的无线数据采集系统

    Institute of Scientific and Technical Information of China (English)

    张志军; 徐小力; 吴国新

    2013-01-01

    针对传统有线数据采集系统存在布线、改线工程量大,维护与拓展困难且费时费力等缺陷,设计了一套基于Wi-Fi技术的无线数据采集系统.系统以LabVIEW为软件开发平台,进行虚拟仪器前面板设计与后台程序的缩写;利用Wi-Fi无线数据收发模决及其余硬件设备实现监测数据的无线采集与传输,并对整个系统进行了实验验证.%Considering the wiring shortcomings of traditional wired data acquisition systems, a Wi-Fi-based wireless data acquisition system was designed, which takes LabVIEW as the platform to design virtual instrument front panel and to write background program; making use of Wi-Fi modules and other hard equipment, the monitoring data were wirelessly collected and transported and the whole system were verified through experiments.

  17. 基于PEX8311PCIE总线的高速图像采集系统设计%High speed image acquisition system design based on PEX8311 of PCIE bus

    Institute of Scientific and Technical Information of China (English)

    阚晓博

    2011-01-01

    针对传统PCI总线带宽低,不能传输高速视频信号的缺陷,设计了使用芯片PEX8311为PCI Express桥接芯片,采集传输CamLink接口相机图像的硬件系统.对PEX8311芯片的特点及其工作模式,以及用状态机在FPGA中实现对PEX8311控制做了介绍.通过编写WDM驱动程序和上位机程序对系统的数据传输性能进行了测试.测试表明该系统满足高速图像传输的要求,并且性能稳定.%Aiming at the disadvantages of the low bandwidth of PCI bus and can't transfer high speed video signal, Camera Link digital camera acquisition system based on PCI Express bridge chipset PEX8311 is designed. Features and work mode of PEX8311 and how to control PEX8311 by using FPGA though state machine are introduced in details. The WDM mode driver program and application software are programmed in order to test the system performance of data transmission. It is shown by experiment results that this system can meet high speed image acquisition requirement and has stable performance.

  18. The Design of a Data Acquisition System Based on AT89C51%基于AT89C51的数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    卢进军

    2014-01-01

    数据采集系统是模拟领域和数字领域之间不可缺少的纽带,具有非常重要的意义。本设计重点介绍了基于AT89C51单片机、串行A/D转换芯片ADC0809为重要组成部分的数据采集系统。系统具有简单实用、成本低、可靠性高及扩展性强的优点。%The data acquisition system is an indispensable link between analog and digital domains,and has a very important significance. We introduced the data acquisition system based on the AT89C51 MCU,and with serial A/D converter chip ADC0809 as the important parts. The system is simple and practical,and has low cost,high reliability and scalability.

  19. Study on Design of Farmland Information Acquisition and Transmission System Based on ZigBee%基于ZigBee的农田信息采集传输系统设计研究

    Institute of Scientific and Technical Information of China (English)

    许峥; 史智兴; 张云飞; 张燕

    2013-01-01

    为了提高农业管理的网络化和智能化水平,降低农田管理工作量,完成了基于ZigBee无线传感器网络的农田信息采集传输系统的设计,着重讲解了系统总体结构、硬件设计和部分软件设计.该系统能够快速、可靠地对农田信息进行远程采集和传输,对精细农业的发展具有重要意义.%In order to improve the network of agricultural management and intelligent level, reduce the workload of farmland management, the farmland information acquisition and transmission system was completed based on ZigBee wireless sensor network design, focused on the systems architecture, hardware design and part of software design. The system can quickly, reliably remote acquisition and transmission of field information, is of great significance to the development of precision agriculture.

  20. Data acquisition system used in radiation induced electrical degradation experiments

    Energy Technology Data Exchange (ETDEWEB)

    White, D.P. [Oak Ridge National Lab., TN (United States)

    1995-04-01

    Radiation induced electrical degradation (RIED) of ceramic materials has recently been reported and is the topic of much research at the present time. The object of this report is to describe the data acquisition system for an experiment designed to study RIED at the High Flux Beam Reactor (HFBR) at Brookhaven National Laboratory.

  1. A status report on the SLD data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    1988-11-01

    The basic design of the SLD data acquisition system and its present status are reviewed. Aspects of the design that take particular advantage of the relatively low e/sup +/e/sup /minus// cross section and the low beam crossing rate of a linear collider are explained. 14 refs., 8 figs.

  2. 40 CFR 205.54-2 - Sound data acquisition system.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Sound data acquisition system. 205.54-2 Section 205.54-2 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) NOISE ABATEMENT PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Medium and Heavy Trucks § 205.54-2...

  3. From Marginal Adjustments to Meaningful Change: Rethinking Weapon System Acquisition

    Science.gov (United States)

    2010-01-01

    Management in Expeditionary Operations, 2007. GAO—See U.S. Government Accountability Offi ce. Garcia , A., H. Keyner, T. Robillard, and M. Van Mullekom... Marquez , R. B. Magnaye, and W. Tan, System Maturity Indices for Decision Support in the Defense Acquisition Process, proceedings of the 5th Annual

  4. Design and development of a data acquisition system for photovoltaic modules characterization

    Energy Technology Data Exchange (ETDEWEB)

    Belmili, Hocine [Unite de Developpement des Equipements Solaires (UDES), Route Nationale No11, Bou-Isamil BP 365, Tipaza 42415, Algerie; Ait Cheikh, Salah Med; Haddadi, Mourad; Larbes, Cherif [Ecole Nationale Polytechnique, Laboratoire de Dispositifs de Communication et de Conversion Photovoltaique (LDCCP), 10 Avenue Hassen Badi, El Harrach 16200 Alger (Algeria)

    2010-07-15

    Testing photovoltaic generators performance is complicated. This is due to the influence of a variety of interactive parameters related to the environment such as solar irradiation and temperature in addition to solar cell material (mono-crystalline, poly-crystalline, amorphous and thin films). This paper presents a computer-based instrumentation system for the characterization of the photovoltaic (PV) conversion. It based on a design of a data acquisition system (DAQS) allowing the acquisition and the drawing of the characterization measure of PV modules in real meteorological test conditions. (author)

  5. A data acquisition system for electric submersible pump based on LabVIEW%基于 LabVIEW 的潜油电泵数据采集系统

    Institute of Scientific and Technical Information of China (English)

    姜建国; 田金艳

    2015-01-01

    应用 LabVIEW 虚拟仪器现场可编程门阵列(FPGA)对潜油电泵的电压、电流参量进行实时数据采集,通过上位机对采样数据进行分析处理,得到潜油电泵的视在功率、有功功率、无功功率和功率因数,并与电能质量检测仪检测数据进行对照。系统硬件采用 NI sbRIO-9606和NI9683夹层板配合使用,突破了传统的依靠 DAQ 助手的硬件采集,基于现场可编程门阵列(FPGA)的数据采集系统,由软件构成采集功能芯片,可控性强,准确性高,应用性好。实验表明,该系统在误差允许范围内能够对数据进行准确采集。%LabVIEW virtual instrument field programmable gate array (FPGA)is applied to the real-time data acquisition of electric submersible pump parameters of voltage and current.The sampling data are analyzed by computer system,then apparent power,active power,reactive power and power factor are obtained,and those data are compared with those detected by power quality detecting instrument.The hardware of the system is NI sbRIO-9606 combined with NI9683 sandwich plate,and the combination breaks through the hardware acquisition on DAQ assistant tradition.Based on field programmable gate array (FPGA),the data acquisition system consists of a software acquisition chip and it has strong controllability,high accuracy and good applicability.Experiment shows that it can sample the data exactly and keep system errors in an allowed scope.

  6. Status Reporting on Weapon System Acquisition Programs,

    Science.gov (United States)

    1985-04-01

    Systems Division ( ASSD ) and the reschedulinq of vehicle acceptance testing milestones caused by thnse !e*e box deliveries. Impact to program: Contract...is primarily due to the late delivery of the ASSD boxes (approximately 10 months late). Impact to program: None. 2 S...integration for which BCWP has been taken. The cumulative cost variance of ($22.5M) is primarily due to the late box deliveries from ASSD and the

  7. Beacon data acquisition and display system

    Science.gov (United States)

    Skogmo, David G.; Black, Billy D.

    1991-01-01

    A system for transmitting aircraft beacon information received by a secondary surveillance radar through telephone lines to a remote display includes a digitizer connected to the radar for preparing a serial file of data records containing position and identification information of the beacons detected by each sweep of the radar. This information is transmitted through the telephone lines to a remote computer where it is displayed.

  8. System Earned Readiness Management for Defense Acquisition

    Science.gov (United States)

    2009-01-01

    Pugh  1991),  Kasser’s  ( Kasser  2004)  First  Requirements   Elucidator  Demonstration  (FRED),  Integrated  Design  Model...Council  on  Systems   Engineering  (NCOSE),  Seattle,  Washington.   Kasser ,  J.  E.  (2004).  "The  first  requirements

  9. Site handbook: data acquisition system information, Security State Bank, Wells, Minnesota

    Energy Technology Data Exchange (ETDEWEB)

    1984-11-01

    The micro-processor based PDL-24 system was used to continuously record energy use for the major building operation functions, inside temperatures and meteorological conditions. With this system, data were stored as hourly averages or totals. These hourly data have been analyzed and the results are presented in a report. This book contains information about the building, the data acquisition system and the data acquisition process used in the DOE Commercial Buildings Program. The hourly data for the Security State Bank are stored on computer files at the American Institute of Architects Foundation in Washington, DC.

  10. Study and design of cryogenic propellant acquisition systems. Volume 1: Design studies

    Science.gov (United States)

    Burge, G. W.; Blackmon, J. B.

    1973-01-01

    An in-depth study and selection of practical propellant surface tension acquisition system designs for two specific future cryogenic space vehicles, an advanced cryogenic space shuttle auxiliary propulsion system and an advanced space propulsion module is reported. A supporting laboratory scale experimental program was also conducted to provide design information critical to concept finalization and selection. Designs using localized pressure isolated surface tension screen devices were selected for each application and preliminary designs were generated. Based on these designs, large scale acquisition prototype hardware was designed and fabricated to be compatible with available NASA-MSFC feed system hardware.

  11. Reliability Survey of Military Acquisition Systems

    Science.gov (United States)

    2014-01-01

    software-intensive sensor and weapons systems, ensuring that there are no open Category 1 or 2 deficiency reports prior to OT. There is also evidence...reliability growth curve used to develop intermediate reliability goal(s)? 5c3 Are the reliability growth goal(s) linked to OTs (e.g., IOT &E, FOT&E...the reliability growth potential? 8 Did your program have an operational test in FY12? 8a What type of operational test was it? (DT/OT, OA/LUT, IOT &E

  12. 基于Oracle组件的数据采集与全文检索系统设计与优化%Design and optimization of data acquisition and full-text retrieval system based on Oracle component

    Institute of Scientific and Technical Information of China (English)

    袁琴琴; 李志勋; 吕林涛

    2016-01-01

    Proceeding from the requirements of data acquisition and full⁃text retrieval for the application system,and in combination with the access control,the design and implementation scheme of data acquisition and full⁃text retrieval based on Oracle Transparent Gateway and Oracle Text is proposed. Based on this scheme,the system structure design,collection storage and database design are conducted emphatically. The index creation and search procedure were realized. At the end of this pa⁃per,the optimization method of system performance is given,and the retrieval speed and precision ratio of the system are ana⁃lyzed. Now the system has been run on line,and achieved the using effect with high efficiency and stable running.%从应用系统数据采集与全文检索的需求出发,结合权限控制,提出基于Oracle Transparent Gateway,Oracle Text的数据采集与全文检索的设计和实现方案。基于此方案,着重进行系统框架设计、采集存储及数据库设计,实现创建索引及检索流程,最后给出系统性能优化方法,并对检索速度和查准率进行测试分析。目前系统已上线运行,取得高效简捷、运行稳定的使用效果。

  13. Performance EvaIuation System Design Based on BSC for the Acquisition of Weapons and Equipments%基于BSC的武器装备采购绩效评价体系设计

    Institute of Scientific and Technical Information of China (English)

    尹铁红; 谢文秀

    2014-01-01

    建立规范实用的武器装备采购绩效评价体系,是当前深入推进我军武器装备采购改革的迫切需要。在简要介绍平衡计分卡(balanced score card, BSC)主要内容和本质内涵的基础上,阐述基于 BSC 的武器装备采购绩效评价体系设计过程,建立了评价模型。%Currently,the driving for acquisition innovation in our army is urgently needed in es-tablishing the standard and applied performance evaluation system for the acquisition of weapons and equipments.On the basis of brief introduction of the content and essence of balanced score card (BSC),the process of performance evaluation system based on BSC is expatiated and the evaluation model are founded.

  14. 基于STM32的FSAE赛车底盘数据采集系统设计%Design of data acquisition system of FSAE racing car chassis based on STM32

    Institute of Scientific and Technical Information of China (English)

    李淼林; 戴海燕; 徐杰龙; 欧阳奕涛; 陈晓楷

    2016-01-01

    本文基于STM32设计了一套高精度、大容量、多通道、廉价的数据采集系统,包括硬件设计和软件设计,使其应用于校内FSAE赛车的底盘调校,实现准确的数据分析与调试。该系统选用STM32F103ZET6作为微处理器,以SD卡作为存储器,实现了多通道信号的同步、连续采集和存储,具有性能稳定、实时性强、扩展灵活等特点。%In this paper, a high precision, large capacity, multi channel, cheap data acquisition system based on the STM32 is designed, including hardware design and software design, which is applied to the FSAE racing car chassis calibration. It can realize accurate data analysis and debugging. The system uses STM32F103ZET6 as the microprocessor, uses SD as memory card, realizes multi channel signals synchronization, continuous acquisition and storage, has the characteristics of stable performance, strong real-time, flexible expansion, etc.

  15. Polar On-Line Acquisition Relay and Transmission System (POLARATS)

    Energy Technology Data Exchange (ETDEWEB)

    Yuracko, K.

    2004-07-15

    POLARATS (Polar On-Line Acquisition Relay And Transmission System) is being developed by YAHSGS LLC (YAHSGS) and Oak Ridge National Laboratory (ORNL) to provide remote, unattended monitoring of environmental parameters under harsh environmental conditions. In particular, instrumental design and engineering is oriented towards protection of human health in the Arctic, and with the additional goal of advancing Arctic education and research. POLARATS will obtain and transmit environmental data from hardened monitoring devices deployed in locations important to understanding atmospheric and aquatic pollutant migration as it is biomagnified in Arctic food chains. An Internet- and personal computer (PC)-based educational module will provide real time sensor data, on-line educational content, and will be integrated with workbooks and textbooks for use in middle and high school science programs. The educational elements of POLARATS include an Internet-based educational module that will instruct students in the use of the data and how those data fit into changing Arctic environments and food chains. POLARATS will: (1) Enable students, members of the community, and scientific researchers to monitor local environmental conditions in real time over the Internet; and (2) Provide additional educational benefits through integration with middle- and high-school science curricula. Information will be relayed from POLARATS devices to classrooms and libraries along with custom-designed POLARATS teaching materials that will be integrated into existing curricula to enhance the educational benefits realized from the information obtained.

  16. 基于PIC18F455O的环境监测数据采集系统设计%Design of A USB Data Acquisition System for Environment Monitoring Based on PIC18F4550 MCU

    Institute of Scientific and Technical Information of China (English)

    胡刚; 刘建鑫; 郭炜

    2012-01-01

    This article introduces a USB data acquisition system based on PIC18F4550 MCU and USB-HID Class, and describes an application of it. Related Circuits, MCU firmware and PC program are also introduced in detail. This system is characterized with practicability, inexpensiveness and rapidity of developing period.%介绍了基于PIC18F4550单片机和USB-HID类的数据采集系统,并列举了该系统在环保分析仪器中的应用实例.详细介绍了相关的电路设计、单片机固件程序和上位机程序的开发流程.该方案具有实用性强,成本低廉,开发周期短等特点.

  17. Development and Application of Project Quality and Safety Information Acquisition System Based on Mobile Terminal%基于移动终端的工程质量安全信息采集系统开发及应用

    Institute of Scientific and Technical Information of China (English)

    张楠

    2016-01-01

    Based on the characteristics of quality and safety information associated with the construction and the requirements of site management, a software platform is developed and a mobile terminal⁃based information acquisition system supported by mobile terminal technology and Internet of things technology is established for collecting. Combining with the actual engineering,the feasibility and availability of the platform is testified.%针对工程质量及安全信息的特点和管理人员的需求,应用移动终端技术和物联网技术,开发软件平台,建立基于移动终端的工程质量安全信息采集系统,并结合实际工程应用,验证其可行性和有效性。

  18. Acquisition and sources. [documents for scientific and technical information systems

    Science.gov (United States)

    Eckert, P. F.

    1978-01-01

    Suggestions and ideas for acquiring documents or their surrogates for a planned or fledgling information system are offered. The problems of selectivity of documents or their surrogates, both in superabundant quantities, and duplicate checking are highlighted. Acquisitioning flow, a semiautomated duplicate search technique, and alerting methods for prospective documentation are described. Appendices include two category systems, selected definitions and acronyms, and a selected address list for document procurement.

  19. Internal Versus External Acquisition for Small Weapons Systems

    Science.gov (United States)

    2007-03-01

    early 1800s. Other examples of repeating history include Lowering the Cost of Federal System Acquisition ( Kasser , 1996), Spare Parts Horror Stories...Spare Parts”, 1997), and Back to Basics (Dornheim, 2006). Kasser recommends moving system testing and inspection to an earlier phase of the...Katobe, M. “Hollowing –Out of US Multinationals and Their Global Competitiveness,” Journal of International Business Studies. 1989, Vol 19:1-15. Kasser

  20. Performance of the Defense Acquisition System. 2014 Annual Report

    Science.gov (United States)

    2014-06-13

    contractors to “win the franchise ” to become the sole-source producer of a system. Contractors are often willing to accept lower development...margins to win this production franchise . 86 Performance of the Defense Acquisition System, 2014 Figure 3-1. Final Margin on MDAP Development and...profits if the contractors determine the longer-term benefits from “winning the franchise ” form a good investment. Both types of sole-source contracts

  1. Data acquisition system for phase-2 KGF proton decay experiment

    Science.gov (United States)

    Krishnaswamy, M. R.; Menon, M. G. K.; Mondal, N. K.; Narasimham, V. S.; Sreekantan, B. V.; Hayashi, Y.; Ito, N.; Kawakami, S.; Miyake, S.

    1985-01-01

    Phase-2 of KGF proton decay experiment using 4000 proportional counters will start operating from middle of 1985. The detection systems, in addition to measuring the time information to an accuracy of 200 n see, also records ionization in the hit counters. It also monitors different characteristics of the counters like pulse height spectrum, pulse width spectrum and counting rate. The acquisition system is discussed.

  2. Manpower, Personnel, and Training in System Acquisition: A Bibliography.

    Science.gov (United States)

    1986-07-01

    Nauele, T., A Risser , 0. (1964. February). Estimating manpower, personnel. and training requrmits early In the weapon system acquisition process...82-S03, AD-AI27 536). Wright-Patterson AFB, OH: Aeronautical systems Division* Risser , 0., A lerger. P. (1964, Septeer). Arm NARDNAN: Its origin...8217Vaskingtmn. DC: Logistics Mamagamnt Institute. Ziinrman, V., Butler, Re., Gray, V.. Rosenberg, LU. & Risser , 0. (1164, August). Evaluation of the 033MN

  3. A Real time Data Acquisition and Monitoring Device for Medical Applications based on Android Platform

    Directory of Open Access Journals (Sweden)

    Jithin Krishnan

    2013-09-01

    Full Text Available An android based real time data acquisition and monitoring device is presented here. The system finds its initial application in medical field .it serves as a remote monitor for measuring and analysing along with logging of data from patients. The system comprises of two parts. A data acquisition (DaQ part connected to patient side and an android based display device on the receiving end. The Data Acquisition part contains sensors for picking up the vital signs from the patients, signal conditioning circuits and a Bluetooth transceiver to transmit data wirelessly to the display device. The Display Device then displays the data received from the transmitter in a readable form and also logs the data into a excel form so that it can be taken out digitally and analysed.

  4. Fast single-element PN acquisition for the TDRSS MA system

    Science.gov (United States)

    Davisson, Lee D.; Flikkema, Paul G.

    1988-11-01

    A description is given and a performance analysis presented of a novel pseudonoise (PN) code acquisition approach for the tracking and data relay satellite system (TDRSS) multiaccess (MA) return subsystem. The MA subsystem uses a phased array onboard the TDRS with 30 elements whose received signals are each independently retransmitted to the ground for beam forming. In the current operational system, acquisition is performed by using a serial search of the possible PN epochs on the beam-formed 30-element signal. The approach performs acquisition on a single (arbitrary) element signal using a parallel (i.e., simultaneous) search of all possible PN epochs. Since only one element signal is used, no beam forming is required prior to PN acquisition. The approach is based on sampling and digital processing of the received signal and incorporates techniques which counteract the effects of Doppler and asynchronous data symboling. The probability of correct acquisition as a function of acquisition time, signal-to-noise ratio, data rate, and user satellite Doppler is analyzed.

  5. 基于 LabVIEW 的 FSAE 赛车悬架数据采集系统%Design of FSAE racing suspension data acquisition system based on LabVIEW

    Institute of Scientific and Technical Information of China (English)

    邓召文; 高伟; 王保华; 刘杰畅

    2015-01-01

    An upper computer program for Formula SAE (FSAE ) racing suspension data acquisition system based on LabVIEW is developed .The front data acquisition is completed by using single chip microcomputer ,the LabVIEW data transmission is realized through wireless module and serial com‐munication ,and the real‐time data acquisition ,recording and playback for the dynamic racing shock compression amount are realized .The wheel core jumping travel ,wheel load and frequency spectrum curve are calculated and obtained in real time .T he real‐time dynamic information reflected by racing suspension data acquisition system can be used to detect w hether the w heel travel meets the rules of FSAE and study axle load transfer of racing car under the limit conditions such as braking ,accelera‐tion and turning ,w hich can provide a guide for the car suspension performance tuning and optimiza‐tion of vehicle performance .%文章开发了一种基于LabVIEW的FSAE赛车悬架数据采集系统,利用单片机进行前端数据采集,通过无线模块、串口通讯与LabVIEW进行数据传输,实现动态赛车减震器压缩量的实时采集、记录与回放,并实时计算获得轮芯跳动行程、车轮载荷大小及频谱曲线。利用系统实时反映的动态信息,可以检测车轮行程是否满足FSAE(Formula SAE ,大学生方程式汽车大赛)规则要求,研究赛车在制动、加速以及转弯等极限工况下的轴荷转移情况,以指导赛车悬架性能调校及整车性能优化。

  6. Research and Design of Self Powered System of WSN Based on Energy Acquisition System%基于能量采集的WSN节点自供电系统设计研究

    Institute of Scientific and Technical Information of China (English)

    刘颖; 朱旭平; 王金平

    2015-01-01

    无线传感器网络(WSN)节点的能量供给关系到WSN的生存周期和系统可靠性,需要设计WSN节点的自供电系统,提高WSN的生存周期.传统的设计方法依靠降低节点功耗的方法来延长节点使用寿命,无法实现能量自供给.针对无线传感器节点能量供给难题,提出一种基于能量采集技术的紧凑型自供电系统设计方案,采用功率密度较大的太阳能作为能量来源,选用适用于微弱能量收集的LTC3105芯片和智能充电控制芯片LTC4071搭建紧凑型自供电系统.实验结果表明,该系统能有效解决无线传感器供电问题,有效实现WSN节点能效优化,提高节点的能量采集效率.%Wireless sensor network node energy supply (WSN to WSN of the life cycle and the reliability of the system. Since the power supply system design of WSN node, improve the WSN life cycle. The traditional design methods depend on the method of reducing the power consumption of the nodes to prolong the service life of the node, can not achieve energy self supply. For the wireless sensor node energy supply problems, put forward a kind of self power supply system design for compact energy collection technology based on the use of solar power, high density as an energy source, choose the suitable LTC3105 chip to the weak energy collection and intelligent charge control chip LTC4071 to build a compact self power sup-ply system. The experimental results show that, the system can effectively solve the problem of wireless sensor power sup-ply, effective implementation of WSN node energy efficiency optimization, improving the efficiency of energy acquisition nodes.

  7. The Embedded Information Acquisition System of Forest Resource

    Directory of Open Access Journals (Sweden)

    Chao Ni

    2012-11-01

    Full Text Available Forest resource is the material basis of forestry production and forestry sustainable development. Mastering the basic status of forest resource provides effective basis for forest resource’s scientific management. Nowadays the concept of “Digital Forestry” is put forward and 3S technology is used in forestry.  Therefore the   embedded system of forest resource information acquisition has been designed which integrated embedded technology with GIS, 3G wireless communication technology and GPS. After analyzing the requirement of forestry resource, the overall structure has been established and the system has been developed by using the advanced demo-board OMAP3530.There are  six functions including system login, data acquisition, data manage, map operation, GPS positioning and navigation, temperature and humidity measuring to enhance working efficiency, reduce power consumption and get real-time data. On the building Qt/Embedded platform, the upper application program interface is designed. Linux system and applications are successful transplanted. Adopting GPS technology, real-time positioning, navigation and latitude and longitude display functions are achieved. At the same time, the collected small class survey data and temperature and humidity data can be saved; the data can be uploaded and downloaded by using 3G module from internet. The embedded system of forest resource information acquisition has been verified in Lianyungang Xinpu district forest of China, which gives a good guide to forestry management.

  8. Control and Data Acquisition System of the ATLAS Facility

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Ki-Yong; Kwon, Tae-Soon; Cho, Seok; Park, Hyun-Sik; Baek, Won-Pil; Kim, Jung-Taek

    2007-02-15

    This report describes the control and data acquisition system of an integral effect test facility, ATLAS (Advanced Thermal-hydraulic Test Loop for Accident Simulation) facility, which recently has been constructed at KAERI (Korea Atomic Energy Research Institute). The control and data acquisition system of the ATLAS is established with the hybrid distributed control system (DCS) by RTP corp. The ARIDES system on a LINUX platform which is provided by BNF Technology Inc. is used for a control software. The IO signals consists of 1995 channels and they are processed at 10Hz. The Human-Machine-Interface (HMI) consists of 43 processing windows and they are classified according to fluid system. All control devices can be controlled by manual, auto, sequence, group, and table control methods. The monitoring system can display the real time trend or historical data of the selected IO signals on LCD monitors in a graphical form. The data logging system can be started or stopped by operator and the logging frequency can be selected among 0.5, 1, 2, 10Hz. The fluid system of the ATLAS facility consists of several systems including a primary system to auxiliary system. Each fluid system has a control similarity to the prototype plant, APR1400/OPR1000.

  9. Dual cameras acquisition and display system of retina-like sensor camera and rectangular sensor camera

    Science.gov (United States)

    Cao, Nan; Cao, Fengmei; Lin, Yabin; Bai, Tingzhu; Song, Shengyu

    2015-04-01

    For a new kind of retina-like senor camera and a traditional rectangular sensor camera, dual cameras acquisition and display system need to be built. We introduce the principle and the development of retina-like senor. Image coordinates transformation and interpolation based on sub-pixel interpolation need to be realized for our retina-like sensor's special pixels distribution. The hardware platform is composed of retina-like senor camera, rectangular sensor camera, image grabber and PC. Combined the MIL and OpenCV library, the software program is composed in VC++ on VS 2010. Experience results show that the system can realizes two cameras' acquisition and display.

  10. A Survey of Knowledge Management Skills Acquisition in an Online Team-Based Distributed Computing Course

    Science.gov (United States)

    Thomas, Jennifer D. E.

    2007-01-01

    This paper investigates students' perceptions of their acquisition of knowledge management skills, namely thinking and team-building skills, resulting from the integration of various resources and technologies into an entirely team-based, online upper level distributed computing (DC) information systems (IS) course. Results seem to indicate that…

  11. 基于 PDA 的 CPⅢ轨道控制网数据采集系统的设计与实现%Design and Implementation of Data Acquisition System of the CPⅢ Track Control Network Based on PDA

    Institute of Scientific and Technical Information of China (English)

    陈爱梅; 吴昊; 吴北平

    2014-01-01

    为了提高C PⅢ轨道控制测量数据采集的效率,结合PD A 与测量机器人联合作业的技术特点,以Visual studio 2008和Visual C#.NET 为开发平台和开发语言,采用串口通信和多线程技术,设计了基于PD A的C PⅢ轨道控制网数据采集系统。系统解决了国内外同类软件彼此间平台不统一、数据不兼容的问题,实现了在任意一款基于Windows Mobile操作系统的手簿上进行项目管理、数据通信、自动测量、质量控制和成果输出的功能。%In order to increase the efficiency of data acquisition of the CPⅢ track control measurement ,one kind of data acquisition system of the CPⅢ track control network based on PDA is developed by combined with the characteristic of PDA and measurement robot joint operation technique ,with Visual Studio 2008 development platform and Visual C # . NET programming language ,and using serial port communication and multi-threading tech-nology .T he system can solve the problem of disunity of platform and data incompatibility between the similar software at home and abroad ,and can achieve such functions as project management ,data communication ,automatic measurement ,quality control and result out-put on any electronic handbook based on windows mobile operating system .

  12. 76 FR 44293 - Defense Acquisition Regulations System; Defense Federal Acquisition Regulation Supplement; Only...

    Science.gov (United States)

    2011-07-25

    ... presented by the Under Secretary of Defense for Acquisition, Technology, & Logistics in a memorandum dated... offered price. These provisions must also be used in acquisitions of commercial items conducted using part...--ACQUISITION OF COMMERCIAL ITEMS 4. Add new section 212.205 to read as follows: 212.205 Offers. (c) When...

  13. 基于Android智能移动终端的远程音频采集系统的实现%Implementation of Remote Audio Acquisition System Based on Android Intelligent Mobile Terminal

    Institute of Scientific and Technical Information of China (English)

    郑珺; 潘雪增

    2012-01-01

    This paper mainly introduces an implementation solution of remote audio acquisition system based on Android intelligent mobile terminal.The acquisition end collects PCM audio data stream and sends it to receiver.The receiver real-time broadcasts the audio data stream,then encodes and saves it to MP3 or WAV audio file.The paper introduces the implementation solution for how to collect,transmit,broadcast and encode the audio data stream in detail.%以Android系统的智能移动终端为平台,提出一个远程音频采集系统的设计方案,可实现在采集端将采集到的PCM编码的音频流传输到远程接收端,在接收端实时播放,并可同时编码保存为MP3或WAV格式的音频文件,详细介绍了音频流的采集、传输、实时播放、编码存储等功能的实现方法。

  14. Design of Data Acquisition System Used for APF Based on DSP and CPLD%基于DSP和CPLD的有源滤波器数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    李鹏; 李树广

    2012-01-01

    Based on two DSPs, CPLD and ADS8556, a data acquisition system of a APF is designed, which is applied to electric railway system to compensate the harmonic current. The system takes a Hall sensor system and A/D converters as prior acquisition circuit, then CPLD controls ADC to sample. One DSP fulfill signal sample, FFT calculation, real time control including transmit the calculated compensation circuit signal to microcontroller which can provide SPWM signal to drive inverter, and send the control data into dual-port RAM. Another DSP receives the data from dual-port RAM which is used to fulfill relevant relay auto-switching control and man-machine exchange. The effectiveness of the structure had been verified by the experimental results which show the proposed system greatly improved the capacity of data acquisition and the effect of harmonic compensation with the higher speed of data processing and sample precision.%针对电气化铁路谐波的要求及其特点,提出了一种基于TMS320F2812双DSP、CPLD以及ADS8556的数据采集系统.整个系统以霍尔传感器和A/D转换器组成前向采集电路,并由CPLD控制A/D转换,其中一个DSP作为主控制器,负责对电网电压/电流及负载侧电流采样、FFT运算以及通过CAN总线接口得到的补偿指令信号传送给单片机产生SPWM信号进行逆变驱动,并将处理得到的数据存储在双口RAM中.另一个DSP作为从控制器从双口RAM中得到数据,实现相应的继电器自动投/切开关及人机交互等功能.本设计被成功应用于电气化铁路智能有源滤波器中,实验表明大大增加了DSP数据采集能力与处理速度,采样精度得到很大的提高,达到了改善谐波补偿效果的目标.

  15. Novel Aspects of the DESI Data Acquisition System

    Science.gov (United States)

    Beaufore, Lucas; Honscheid, Klaus; Elliott, Ann; Dark Energy Spectroscopic Instrument Collaboration

    2015-04-01

    The Dark Energy Spectroscopic Instrument (DESI) will measure the effect of dark energy on the expansion of the universe. It will obtain optical spectra for tens of millions of galaxies and quasars, constructing a 3-dimensional map spanning the nearby universe to 10 billion light years. The survey will be conducted on the Mayall 4-meter telescope at Kitt Peak National Observatory starting in 2018. In order to achieve these scientific goals the DESI collaboration is building a high throughput spectrograph capable of observing thousands of spectra simultaneously. In this presentation we discuss the DESI instrument control and data acquisition system that is currently being developed to operate the 5,000 fiber positioners in the focal plane, the 10 spectrographs each with three CDD cameras and every other aspect of the instrument. Special emphasis will be given to novel aspects of the design including the use of inexpensive Linux-based microcontrollers such as the Raspberry PI to control a number of DESI hardware components.

  16. A research of a high precision multichannel data acquisition system

    Science.gov (United States)

    Zhong, Ling-na; Tang, Xiao-ping; Yan, Wei

    2013-08-01

    The output signals of the focusing system in lithography are analog. To convert the analog signals into digital ones which are more flexible and stable to process, a desirable data acquisition system is required. The resolution of data acquisition, to some extent, affects the accuracy of focusing. In this article, we first compared performance between the various kinds of analog-to-digital converters (ADC) available on the market at the moment. Combined with the specific requirements (sampling frequency, converting accuracy, numbers of channels etc) and the characteristics (polarization, amplitude range etc) of the analog signals, the model of the ADC to be used as the core chip in our hardware design was determined. On this basis, we chose other chips needed in the hardware circuit that would well match with ADC, then the overall hardware design was obtained. Validation of our data acquisition system was verified through experiments and it can be demonstrated that the system can effectively realize the high resolution conversion of the multi-channel analog signals and give the accurate focusing information in lithography.

  17. IMPLEMENTATION AND VERIFICATION OF FAST ACQUISITION ALGORITHM FOR GPS BASED ON SYSTEM GENERATOR%基于 System Generator 的 GPS 快速捕获算法的实现与验证

    Institute of Scientific and Technical Information of China (English)

    杨晶

    2014-01-01

    目前在 GPS 接收机中,对码的捕获一般有两种方法:串行搜索方法和并行搜索方法。串行搜索方法硬件实现简单,但其捕获时间较长,计算量大,完成一个码搜索需约2分钟左右时间。导航接收机需要较高的数据更新率,这就要求捕获时间变得更短。重点研究在 SDR (Software Defined Radio)平台上通过 FFT 实现频域并行快速捕获算法。使用 Xilinx 公司的系统级建模工具 System Generator 完成对 XCVFX60FF1152这款 V4系列的 FPGA 芯片编程,完成了频域捕获算法的硬件实现,并验证了结果的正确性。%There are usually two methods for codes acquisition in GPS receiver:serial search and parallel search.The former can be simply implemented by the hardware,while it needs longer time for acquisition and is computational intensive,and to complete one code search it needs about 2 minutes.The navigation receiver requires faster data update rate,which needs the acquisition time to become shorter. In the paper we focus on the implementation of a fast parallel acquisition algorithm with FFT in frequency domain on SDR (software defined radio)platform.The modelling tool of Xilinx,System Generator,is used to accomplish the FPGA chip programming for the V4 series in XCVFX60FF1152,as well as to implement the hardware realisation of frequency domain acquisition algorithm together with the verification of the correctness of the result.

  18. Wearable Intelligent Environment Parameters Acquisition System Based on Bluetooth Technique%基于蓝牙技术的可穿戴式智能环境参数采集系统

    Institute of Scientific and Technical Information of China (English)

    孙广维; 杨小天

    2015-01-01

    提出了一种基于蓝牙技术的无线可穿戴式环境参数获取系统,其采用智能手持终端(例如手机),实现了将个人用户周边环境信息的实时采集,融合了可穿戴式传感器、物联网技术以及智能终端等技术。系统集成了多种传感器,可检测温湿度、光照、气压、PM2.5等。另外,该系统很容易通过增加传感器种类和数目实现扩展,还可以与其他系统通过广域网进行无线组网,实现一个大型环境参数监测无线传感器网络,将会在环境监测、天气、自然灾害预警方面得到广泛发展。%This paper presents a wearable environment parameters acquisition system based on Bluetooth technique, which achieves the individual user environment information acquisition by using intelligent handheld terminal ( such as a mobile phone) , showing the fu-sion of technologies of wearable sensors, network of things and intelligent terminal. The system with many sensors integrated can detect the temperature and humidity, light, pressure, PM2. 5, etc. In addition, the system is very easy to achieve expansion by adding types and numbers of sensors, also form wireless network with other systems through wide area network. The realization of a large-scale wire-less sensor network of environment parameters monitoring will be widely developed in environmental monitoring, weather and natural disaster prediction.

  19. Multi-channel data acquisition system with absolute time synchronization

    Energy Technology Data Exchange (ETDEWEB)

    Włodarczyk, Przemysław, E-mail: pan.wlodarczyk@uj.edu.pl [Department of Electronics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków (Poland); Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków (Poland); Pustelny, Szymon, E-mail: pustelny@uj.edu.pl [Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków (Poland); Budker, Dmitry [Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300 (United States); Lipiński, Marcin [Department of Electronics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków (Poland)

    2014-11-01

    We present a low-cost, stand-alone global-time-synchronized data acquisition system. Our prototype allows recording up to four analog signals with a 16-bit resolution in variable ranges and a maximum sampling rate of 1000 S/s. The system simultaneously acquires readouts of external sensors e.g. magnetometer or thermometer. A complete data set, including a header containing timestamp, is stored on a Secure Digital (SD) card or transmitted to a computer using Universal Serial Bus (USB). The estimated time accuracy of the data acquisition is better than ±200 ns. The device is intended for use in a global network of optical magnetometers (the Global Network of Optical Magnetometers for Exotic physics – GNOME), which aims to search for signals heralding physics beyond the Standard Model, that can be generated by ordinary spin coupling to exotic particles or anomalous spin interactions.

  20. Understanding Information Systems Integration Deficiencies in Mergers and Acquisitions

    DEFF Research Database (Denmark)

    Henningsson, Stefan; Kettinger, William J.

    2017-01-01

    Information systems (IS) integration is a critical challenge for value-creating mergers and acquisitions. Appropriate design and implementation of IS integration is typically a precondition for enabling a majority of the anticipated business benefits of a combined organization. Often, IS integrat......Information systems (IS) integration is a critical challenge for value-creating mergers and acquisitions. Appropriate design and implementation of IS integration is typically a precondition for enabling a majority of the anticipated business benefits of a combined organization. Often......, IS integration projects are subject to deficiencies (e.g., loss of the target firm’s business capabilities with expedited integration) that limit value creation. Drawing on a configurational perspective, we reanalyze 37 published case studies of problematic IS integrations and identify the potential deficiencies...... are reported, we discuss approaches for managing IS integration to avoid realizing the actualization of deficiencies....

  1. Precise time synchronization data acquisition with remote systems

    Energy Technology Data Exchange (ETDEWEB)

    Berg, D.E.; Robertson, P.J.

    1998-08-01

    Researchers at the National Wind Technology Center have identified a need to acquire data on the rotor of an operating wind turbine at precisely the same time as other data is acquired on the ground or on a non-rotating part of the wind turbine. The researchers will analyze that combined data with statistical and correlation techniques to clearly establish phase information and loading paths and insights into the structural loading of wind turbines. A data acquisition unit has been developed to acquire the data from the rotating system at precise universal times specified by the user. The unit utilizes commercial data acquisition hardware, spread-spectrum radio modems, and a Global Positioning Satellite receiver as well as a custom-built programmable logic device. A prototype of the system is now operational, and initial field deployment is anticipated this summer.

  2. 基于ARM的便携式数据采集与处理系统设计%Design of portable data acquisition and processing system based on ARM

    Institute of Scientific and Technical Information of China (English)

    陈建; 种健; 刘剑

    2016-01-01

    For the application of embedded system in data acquisition and processing,a new scheme is studied to perform the software and hardware design,debugging and implementation. A portable data acquisition and processing system integrating multichannel data acquisition and processing,real⁃time display and USB communication was implemented. For the hardware,5 analog input channels,lithium⁃ion battery charging circuit,SDRAM,NAND Flash storage circuit,LCD interface circuit with SPI communication,USB device interface and DBGU interface circuit were designed based on the peripheral unit of microproces⁃sor,microcontroller development board schematic diagram made by Atmel Company and actual customer demand. For the soft⁃ware,the program modules of multichannel analog input timing acquisition,LCD display,key configuration,and driver of NAND FLASH read⁃write and USB mass storage device were designed by means of IAR integrated development environment, and then some simple data acquisition and processing,and FFT spectral analysis function were realized. In order to analyze and process the analog⁃to⁃digital conversion data in NAND FLASH,the data processing programming based on Matlab and mixed programming based Matlab and VC++ were performed respectively.%针对嵌入式系统在数据采集与处理中的应用,研究了一种新的方案进行系统的软硬件设计、调试和实现,完成了一个集多路数据采集与处理、实时显示和USB通信于一体的便携式数据采集系统。在硬件方面,利用微处理器的外围设备,结合Atmel公司提供的微控制器开发板原理图和客户实际需求,设计了5路模拟量输入通道,锂离子电池充电电路, SDRAM,NAND FLASH存储器电路,SPI通信方式的LCD接口电路,USB设备接口和DBGU接口电路。在软件方面,利用IAR集成开发环境设计了多路模拟量输入定时采集,LCD显示,按键设置,NAND Flash读写和USB大容量存储设备驱

  3. Knowledge Acquisition, Validation, and Maintenance in a Planning System for Automated Image Processing

    Science.gov (United States)

    Chien, Steve A.

    1996-01-01

    A key obstacle hampering fielding of AI planning applications is the considerable expense of developing, verifying, updating, and maintainting the planning knowledge base (KB). Planning systems must be able to compare favorably in terms of software lifecycle costs to other means of automation such as scripts or rule-based expert systems. This paper describes a planning application of automated imaging processing and our overall approach to knowledge acquisition for this application.

  4. Proposal to upgrade the MIPP data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    Baker, W.; Carey, D.; Johnstone, C.; Kostin, M.; Meyer, H.; Raja, R.; /Fermilab

    2005-03-01

    The MIPP TPC is the largest contributor to the MIPP event size by far. Its readout system and electronics were designed in the 1990's and limit it to a readout rate of 60 Hz in simple events and {approx} 20 Hz in complicated events. With the readout chips designed for the ALICE collaboration at the LHC, we propose a low cost effective scheme of upgrading the MIPP data acquisition speed to 3000 Hz.

  5. 基于PCI-1750 I/O卡的测试枪自动检测系统设计%Design of contact cassette test system based on data acquisition card PCI-1750

    Institute of Scientific and Technical Information of China (English)

    赵智峰

    2013-01-01

    In order to increase the production capacity, Realize the function of auto test contact cassette off line, we designed the auto test system based on data acquisition PCI-1750 card. Using language of VB.net , we can control the cylinder movement and test the sensor state lively through the function library in control card.%  为了方便线下维修测试枪,提高设备的利用率,设计了基于PCI数据采集控制卡的系统控制方案.通过VB.net 调用数据采集控制卡中的函数库,手动或自动控制气缸运动,测试传感器状态,从而实现测试枪的手动和自动检测。

  6. Present Status and Future Development of HL-2A Data Acquisition System

    Institute of Scientific and Technical Information of China (English)

    CHENLiaoyuan; LUOCuiwen; PANLi; YANGYang; XUZhengyu; HANQian

    2002-01-01

    HL-2A data acquisition system (DAS) was developed and used in engineering tests last year. The main parts of the system include the experiment network, the data acquisition and processing mechanisms, and the graph and character display equipments.

  7. Acquisition System for Three-Dimensional Surface Texture of Asphalt Pavement Based on Digital Image Processing%基于数字图像技术的沥青路表面三维构造获取系统

    Institute of Scientific and Technical Information of China (English)

    刘亚敏; 韩森; 徐鸥明

    2014-01-01

    In order to make an objective and true evaluation on three-dimension surface texture of asphalt pavement,an acquisition system for surface three-dimensional texture of asphalt pavement was developed based on the digital image processing. First,the classical Lambertian diffuse model was used to obtain three red,green,blue images. Then photometric stereo method was employed to calculated the surface gradients in x and y directions with the reflection intensity of three images. Finally the Frankot-Chellappa global integration algorithm was applied to making the Fourier transformation of the gradients. Thus the heights were obtained and the surface texture was reconstructed. The results indicate that the accuracy of height value obtained by the acquisition system is 0. 000 1 mm,which meets the requirement for analysis of texture depth;the correlation coefficient between the results of this system and the traditional sand patch test is 0 . 887 5 ,which demonstrates that this acquisition system is practical.%为了客观、真实地评价沥青路表面三维构造,利用数字图像技术研制了一种沥青路表面三维构造获取系统.首先基于经典的漫反射模型---the Lambertian Model,获取3张红、蓝、绿二维图像;然后根据光度立体法,利用3张图像的反射光强度计算其x、y方向上的梯度数据;最后借助Frankot-Chellappa全局积分算法将梯度数据进行傅立叶变换,计算得到高度值,实现路表面构造的三维重建.研究结果表明,该系统获取的高度值精度达到0.0001 mm,满足分析构造深度的要求;与传统方法---铺砂法的测试结果相关系数R=0.8875,相关性较好,证明了该系统应用的可行性.

  8. 基于模型化DSP快速设计的音频信号采集系统%Fast design of audio signal acquisition system based on DSP modeling design

    Institute of Scientific and Technical Information of China (English)

    李智勇; 王飞; 朱强

    2015-01-01

    数字信号控制器具有数字信号处理器和微控制器的优点,在现代自动控制、数据采集系统中占据着重要的地位,TMS320F28335作为目前最主流的数字信号控制器,在实际工程中被广泛的使用.目前该处理器存在着程序设计周期长,程序设计过程复杂等问题.采用模型化设计的DSP嵌入式系统程序开发方法能很好地解决这个问题.以设计一个基于DSP的音频数据采集系统为例,通过将CCS软件和Matlab/Simulink进行有机的结合,对模型进行图形化界面配置,最终实现目标处理器程序代码的自动生成、下载、调试和运行,从而快速地实现音频信号数据采集系统的设计.%The digital signal controller has the advantages from digital signal processor and microcontroller,which has played the important role in modern automatic control and data acquisition system. TMS320F28335 as the mainstream digital sig-nal controller is widely used in practical engineering. Currently,this processor has the problems of long period program design and complicated program design process. The program development method of DSP embedded system with modeling design can solve these problems better. Taking design a DSP-based audio signal acquisition system as an instance,the graphic interface of the model is configured by combining CCS software with Matlab/Simulink greatly. The automatic generation,downloading,de-bugging and operation of the program codes in the target processor are realized,and the design of this audio signal acquisition system can be implemented fast.

  9. Automatic acquisition and classification system for agricultural network information based on Web data%基于Web数据的农业网络信息自动采集与分类系统

    Institute of Scientific and Technical Information of China (English)

    段青玲; 魏芳芳; 张磊; 肖晓琰

    2016-01-01

    The purpose of this study is to obtain agricultural web information efficiently, and to provide users with personalized service through the integration of agricultural resources scattered in different sites and the fusion of heterogeneous environmental data. The research in this paper has improved some key information technologies, which are agricultural web data acquisition and extraction technologies, text classification based on support vector machine (SVM) and heterogeneous data collection based on the Internet of things (IOT). We first add quality target seed site into the system, and get website URL (uniform resource locator) and category information. The web crawler program can save original pages. The de-noised web page can be obtained through HTML parser and regular expressions, which create custom Node Filter objects. Therefore, the system builds a document object model (DOM) tree before digging out data area. According to filtering rules, the target data area can be identified from a plurality of data regions with repeated patterns. Next, the structured data can be extracted after property segmentation. Secondly, we construct linear SVM classification model, and realize agricultural text classification automatically. The procedures of our model include 4 steps. First of all, we use segment tool ICTCLAS to carry out the word segment and part-of-speech (POS) tagging, followed by combining agricultural key dictionary and document frequency adjustment rule to choose feature words, and building a feature vector and calculating inverse document frequency (IDF) weight value for feature words; lastly we design adaptive classifier of SVM algorithm. Finally, the perception data of different format collected by the sensor are transmitted to the designated server as the source data through the wireless sensor network. Relational database in accordance with specified acquisition frequency can be achieved through data conversion and data filtering. The key step of

  10. Issues With Access to Acquisition Data and Information in the Department of Defense: Doing Data Right in Weapon System Acquisition

    Science.gov (United States)

    2016-04-30

    PDF files, e-mail messages, blogs, Web pages and social sites” (“Structured Data,” n.d.-b). 3 According to the PC Magazine Online Encyclopedia, a...have found that balancing security and access needs is difficult. Background and Findings on Deep Dives of Acquisition Information Systems As part...of this effort to understand acquisition data opportunities,4 we conducted “ deep dives” on a set of information systems. In this section, we summarize

  11. PROBLEM BASED LEARNING FOR EPISTEMOLOGICAL COMPETENCE: THE KNOWLEDGE ACQUISITION PERSPECTIVES

    Directory of Open Access Journals (Sweden)

    Alias Masek

    2011-09-01

    Full Text Available This article explores the potential of Problem Based Learning (PBL for epistemological competence in< an engineering education area. The main idea is to explore how the processes in PBL promote knowledge acquisition that lead to an individual deep content learning. A review has been done from theoretical and conceptual aspect, as well as supportive evidence from several empirical findings. Within this, knowledge is constructed from the basic knowledge of concepts, principles, and procedural knowledge with integration to previous knowledge and experiences. The concepts and principles are linked and integrated with each other, forming a procedural knowledge, which promotes deep content learning. However, supportive evidence from the recent research literature indicates inconclusive findings, which called for more studies to provide more empirical evidence to investigate the effectiveness of PBL on knowledge acquisitions.

  12. Development of Data Acquisition System for nuclear thermal hydraulic out-of-pile facility using the graphical programming methods

    Energy Technology Data Exchange (ETDEWEB)

    Bouaichaoui, Youcef; Berrahal, Abderezak; Halbaoui, Khaled [Birine Nuclear Research Center/CRNB/COMENA/ALGERIA, BO 180, Ain Oussera, 17200, Djelfa (Algeria)

    2015-07-01

    This paper describes the design of data acquisition system (DAQ) that is connected to a PC and development of a feedback control system that maintains the coolant temperature of the process at a desired set point using a digital controller system based on the graphical programming language. The paper will provide details about the data acquisition unit, shows the implementation of the controller, and present test results. (authors)

  13. Monitoring and Acquisition Real-time System (MARS)

    Science.gov (United States)

    Holland, Corbin

    2013-01-01

    MARS is a graphical user interface (GUI) written in MATLAB and Java, allowing the user to configure and control the Scalable Parallel Architecture for Real-Time Acquisition and Analysis (SPARTAA) data acquisition system. SPARTAA not only acquires data, but also allows for complex algorithms to be applied to the acquired data in real time. The MARS client allows the user to set up and configure all settings regarding the data channels attached to the system, as well as have complete control over starting and stopping data acquisition. It provides a unique "Test" programming environment, allowing the user to create tests consisting of a series of alarms, each of which contains any number of data channels. Each alarm is configured with a particular algorithm, determining the type of processing that will be applied on each data channel and tested against a defined threshold. Tests can be uploaded to SPARTAA, thereby teaching it how to process the data. The uniqueness of MARS is in its capability to be adaptable easily to many test configurations. MARS sends and receives protocols via TCP/IP, which allows for quick integration into almost any test environment. The use of MATLAB and Java as the programming languages allows for developers to integrate the software across multiple operating platforms.

  14. Biometric iris image acquisition system with wavefront coding technology

    Science.gov (United States)

    Hsieh, Sheng-Hsun; Yang, Hsi-Wen; Huang, Shao-Hung; Li, Yung-Hui; Tien, Chung-Hao

    2013-09-01

    Biometric signatures for identity recognition have been practiced for centuries. Basically, the personal attributes used for a biometric identification system can be classified into two areas: one is based on physiological attributes, such as DNA, facial features, retinal vasculature, fingerprint, hand geometry, iris texture and so on; the other scenario is dependent on the individual behavioral attributes, such as signature, keystroke, voice and gait style. Among these features, iris recognition is one of the most attractive approaches due to its nature of randomness, texture stability over a life time, high entropy density and non-invasive acquisition. While the performance of iris recognition on high quality image is well investigated, not too many studies addressed that how iris recognition performs subject to non-ideal image data, especially when the data is acquired in challenging conditions, such as long working distance, dynamical movement of subjects, uncontrolled illumination conditions and so on. There are three main contributions in this paper. Firstly, the optical system parameters, such as magnification and field of view, was optimally designed through the first-order optics. Secondly, the irradiance constraints was derived by optical conservation theorem. Through the relationship between the subject and the detector, we could estimate the limitation of working distance when the camera lens and CCD sensor were known. The working distance is set to 3m in our system with pupil diameter 86mm and CCD irradiance 0.3mW/cm2. Finally, We employed a hybrid scheme combining eye tracking with pan and tilt system, wavefront coding technology, filter optimization and post signal recognition to implement a robust iris recognition system in dynamic operation. The blurred image was restored to ensure recognition accuracy over 3m working distance with 400mm focal length and aperture F/6.3 optics. The simulation result as well as experiment validates the proposed code

  15. Low Power Data Acquisition System for Bioimplantable Devices

    Directory of Open Access Journals (Sweden)

    Sadeque Reza Khan

    2014-01-01

    Full Text Available Signal acquisition represents the most important block in biomedical devices, because of its responsibilities to retrieve precise data from the biological tissues. In this paper an energy efficient data acquisition unit is presented which includes low power high bandwidth front-end amplifier and a 10-bit fully differential successive approximation ADC. The proposed system is designed with 0.18 µm CMOS technology and the simulation results show that the bioamplifier maintains a wide bandwidth versus low noise trade-off and the proposed SAR-ADC consumes 450 nW power under 1.8 V supply and retain the effective number of bit 9.55 in 100 KS/s sampling rate.

  16. Improving the Defense Acquisition System and Reducing System Costs

    Science.gov (United States)

    1981-03-30

    are closely coordinated and in consonance with the PPBS decisions; require that appropriate long- range business strategies and planning tools are...codified in U.S. Code. There is no single source of acquisition law. The UPS project is the only known tool now available to improve the situation...SYSl’CM SUPIMKT TESTING o RISK REDUCTION/ MVmilAIlOU PLAN »EARLY IMPROVEMENT) SUPPORT RESOURCE DEVOP . oo FIRM-UP CONTRACT SUPPORT PLANS oo

  17. Wireless SAW Sensor Signal Acquisition System Based on the WIFI%基于WIFI的无线声表面波传感器信号采集系统

    Institute of Scientific and Technical Information of China (English)

    文常保; 党双欢; 朱博; 李演明; 巨永锋

    2015-01-01

    The signal wireless fidelity(WIFI)technology is incorporated into the surface acoustic wave(SAW)sen-sor,and the wireless SAW sensor signal acquisition system based on the WIFI is proposed. The system consists of the SAW sensor,the signal conditioning circuits,the processors,the WIFI module and the wireless receiver termi-nal. The mixed SAW sensor signal is converted into the low frequency square wave signal by the signal conditioning circuit. The low frequency square wave signal can be counted by the processor and the collected signal data is trans-mitted to the receiving terminal by the WIFI module wirelessly. The structure and performance of the SAW sensor signal acquisition system based on the WIFI is validated and tested by means of the SAW sensor signal acquisition system with the output frequency range from 100 kHz to 350 kHz. Experimental results show that the signal can be collected,transmitted and received wirelessly within the test range. The average absolute error with input signal and the received signal is about 0.843 kHz,and the maximum relative error is about 0.51%. The effective acquisition range is about 100 meters in the barrier-free environment and about 50 meters in the obstacle environment.%将声表面波传感器与信号无线保真(WIFI)技术相结合,提出了一种基于WIFI的无线声表面波传感器信号采集系统.该系统由声表面波传感器、信号调理电路、处理器、WIFI模块和无线接收终端组成.声表面波传感器混频后的信号经过信号调理电路后,转换为处理器可计频的低频方波信号,并通过WIFI模块将采集到的信号无线发送到接收终端.通过一个输出信号范围在100 kHz~350 kHz声表面波传感器信号采集系统的实现,对该系统的结构、性能进行了验证和测试.实验结果表明,该系统可以实现测试范围内信号的采集、发送和无线接收,系统输入信号与无线接收终端接收信号之间的平均绝对误差为0.843 k

  18. Design of Touch Screen Touch Point Data Acquisition System Based on LPC2210%基于LPC2210的触摸屏触摸点数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    范林; 徐爱钧

    2012-01-01

    Touch screen with touch ponit data acquisition system is proposed in this paper based on ARM7 series LPC2210 microcon- troller and embedded operating system btC/OS-II, and physical layer circuit conversion between microcontroller and the host machine is completed. It achieves data communication based on the LIN bus. The system can acquire exact coordinates of the touch point and con- trol menu information on the host machine, and has features of accurate, reliable and fast transfer rates.%提出了基于ARM7系列LPC2210微控制器和嵌入式操作系统μC/OS-II来实现触摸屏触摸点数据采集系统的设计,并完成了微控制器与上位机之间的物理层电路转换,实现了基于LIN总线的数据通信,能够在上位机得到触摸点的精确坐标以及控制菜单信息,并且准确可靠、传输速率高。

  19. Analysis of Filter-Bank-Based Methods for Fast Serial Acquisition of BOC-Modulated Signals

    Directory of Open Access Journals (Sweden)

    Lohan ElenaSimona

    2007-01-01

    Full Text Available Binary-offset-carrier (BOC signals, selected for Galileo and modernized GPS systems, pose significant challenges for the code acquisition, due to the ambiguities (deep fades which are present in the envelope of the correlation function (CF. This is different from the BPSK-modulated CDMA signals, where the main correlation lobe spans over 2-chip interval, without any ambiguities or deep fades. To deal with the ambiguities due to BOC modulation, one solution is to use lower steps of scanning the code phases (i.e., lower than the traditional step of 0.5 chips used for BPSK-modulated CDMA signals. Lowering the time-bin steps entails an increase in the number of timing hypotheses, and, thus, in the acquisition times. An alternative solution is to transform the ambiguous CF into an "unambiguous" CF, via adequate filtering of the signal. A generalized class of frequency-based unambiguous acquisition methods is proposed here, namely the filter-bank-based (FBB approaches. The detailed theoretical analysis of FBB methods is given for serial-search single-dwell acquisition in single path static channels and a comparison is made with other ambiguous and unambiguous BOC acquisition methods existing in the literature.

  20. Analysis of Filter-Bank-Based Methods for Fast Serial Acquisition of BOC-Modulated Signals

    Directory of Open Access Journals (Sweden)

    Elena Simona Lohan

    2007-09-01

    Full Text Available Binary-offset-carrier (BOC signals, selected for Galileo and modernized GPS systems, pose significant challenges for the code acquisition, due to the ambiguities (deep fades which are present in the envelope of the correlation function (CF. This is different from the BPSK-modulated CDMA signals, where the main correlation lobe spans over 2-chip interval, without any ambiguities or deep fades. To deal with the ambiguities due to BOC modulation, one solution is to use lower steps of scanning the code phases (i.e., lower than the traditional step of 0.5 chips used for BPSK-modulated CDMA signals. Lowering the time-bin steps entails an increase in the number of timing hypotheses, and, thus, in the acquisition times. An alternative solution is to transform the ambiguous CF into an “unambiguous” CF, via adequate filtering of the signal. A generalized class of frequency-based unambiguous acquisition methods is proposed here, namely the filter-bank-based (FBB approaches. The detailed theoretical analysis of FBB methods is given for serial-search single-dwell acquisition in single path static channels and a comparison is made with other ambiguous and unambiguous BOC acquisition methods existing in the literature.

  1. Research of CRP-based irregular 2D seismic acquisition

    Institute of Scientific and Technical Information of China (English)

    Zhao Hu; Yin Cheng; He Guang-Ming; Chen Ai-Ping; Jing Long-Jiang

    2015-01-01

    Seismic exploration in the mountainous areas of western Chinese is extremely diffi cult because of the complexity of the surface and subsurface, which results in shooting difficulties, seismic data with low signal-to-noise ratio, and strong interference. The complexity of the subsurface structure leads to strong scattering of the refl ection points; thus, the curved-line acquisition method has been used. However, the actual subsurface structural characteristics have been rarely considered. We propose a design method for irregular acquisition based on common refl ection points (CRP) to avoid diffi cult-to-shoot areas, while considering the structural characteristics and CRP positions and optimizing the surface-receiving line position. We arrange the positions of the receiving points to ensure as little dispersion of subsurface CRP as possible to improve the signal-to-noise ratio of the seismic data. We verify the applicability of the method using actual data from a site in Sichuan Basin. The proposed method apparently solves the problem of seismic data acquisition and facilitates seismic exploration in structurally complex areas.

  2. Nonredundant Roles of Iron Acquisition Systems in Vibrio cholerae.

    Science.gov (United States)

    Peng, Eric D; Wyckoff, Elizabeth E; Mey, Alexandra R; Fisher, Carolyn R; Payne, Shelley M

    2015-12-07

    Vibrio cholerae, the causative agent of the severe diarrheal disease cholera, thrives in both marine environments and the human host. To do so, it must encode the tools necessary to acquire essential nutrients, including iron, under these vastly different conditions. A number of V. cholerae iron acquisition systems have been identified; however, the precise role of each system is not fully understood. To test the roles of individual systems, we generated a series of mutants in which only one of the four systems that support iron acquisition on unsupplemented LB agar, Feo, Fbp, Vct, and Vib, remains functional. Analysis of these mutants under different growth conditions showed that these systems are not redundant. The strain carrying only the ferrous iron transporter Feo grew well at acidic, but not alkaline, pH, whereas the ferric iron transporter Fbp promoted better growth at alkaline than at acidic pH. A strain defective in all four systems (null mutant) had a severe growth defect under aerobic conditions but accumulated iron and grew as well as the wild type in the absence of oxygen, suggesting the presence of an additional, unidentified iron transporter in V. cholerae. In support of this, the null mutant was only moderately attenuated in an infant mouse model of infection. While the null mutant used heme as an iron source in vitro, we demonstrate that heme is not available to V. cholerae in the infant mouse intestine.

  3. The Research and Implementation of Data Acquisition System Based on PC104 and FPGA%基于PCI04和FPGA的数据采集系统的研究和实现

    Institute of Scientific and Technical Information of China (English)

    程艳; 孙树敏; 张海涛; 李广磊; 袁帅; 赵鹏; 毛庆波

    2012-01-01

    In order to detect the operating state of the dynamic reactive power compensation devicein wind farm, the im plementation of data acquisition system,which is based on PCI04 and FPGA ,has been proposed. PCI04, which is the system host, is merely responsible for the function of date reception and procession ,network communication ,Human Machine Interface, etc.; FPGA, which is the auxiliary equipment, is mainly used to complete the synchronous collection of voltage and electric current signal, and then send the signals to PCI04 by PCI9054 , which is the interface chip of PCI. PCI04 and FPGA have implemented bidirectional data transmission through PCI9054. The connection between FPGA and four six-channel high-speed synchronous A/D can realize the synchronous acquisition of up to twenty-four channel analog.%为了检测风电场动态无功补偿装置的运行状态,提出了基于PCI04工控机和FPGA的数据采集系统的实现方法。以PCI04为系统主机,主要负责数据的接收与处理、网络通信,人机接口等功能;以FPGA为从机,主要完成电压、电流信号的同步采集并通过PCI接口芯片PCI9054传送至PCI04、PCI04和FPGA通过PCI9054实现双向数据传输。FPGA与四片六通道高速同步A/D连结,可以实现最多二十四路模拟量的同步采集。

  4. 基于激光影像的物体三维点云获取系统%The acquisition System of 3D Point Cloud Based on Image With Laser

    Institute of Scientific and Technical Information of China (English)

    王震; 刘进

    2013-01-01

    三维点云获取系统能够快速地获取目标物体的几何信息,生成大量点云,将目标的真实三维形态在计算机中可视化的展现出来。本文提出了一种新的三维点云数据获取的方法,应用在自主开发的基于激光影像的物体三维点云获取系统中,即标定激光面映射目标表面点的一维坐标,利用单像摄影测量后方交会和一维坐标的联合解算,得出目标点三维伪坐标。通过坐标逆向旋转恢复,得到真实的三维坐标数据,据此完整地建立目标物体的三维可视化模型。%The acquisition system of 3D point cloud can get the geometric information fast and provide a lot of point cloud data in order to show the object 3D shape on a computer .This paper gives a new method of getting 3D point cloud data that is applied to the self-made system of object 3D point cloud acquisition based on image with laser .The calibra-ted laser area reflects the one dimension coordinates of object surface .Through the combined calculation of one dimen-sion coordinate and resection of single photogrammetry the original 3D coordinates of object points can be obtained . Through reverse rotation we can get the true 3D coordinates and construct the complete 3D visual model of object.

  5. 基于DSP的CCD信号采集控制系统设计%Design of DSP-based CCD signal acquisition system

    Institute of Scientific and Technical Information of China (English)

    章顺喜

    2014-01-01

    The design process of CCD signal acquisition circuit is introduced, in which the shift pulse that the CCD internal vertical shifting register requires is produced by MCU, and the CCD level shift pulse and reset pulse are produced by TMS320LF2407A chip. The circuit of analog to digital conversion and data storage is designed after the CCD output signal, and the data transmission between DSP and FIFO is controlled by the DSP and MCU. So that the processing of CCD signal is realized and the objective is measured.%介绍了CCD信号采集电路的设计过程,该设计由单片机产生CCD内部垂直移位寄存器工作所需的转移脉冲,并由TMS320LF2407A芯片产生CCD水平移位脉冲和复位脉冲,然后在CCD输出信号之后设计了模数转换和数据存储电路,再由DSP和单片机共同控制DSP和数据存储FIFO之间的数据读取,从而可以实现DSP对CCD信号的处理,最终实现对目标的测量。

  6. A Prototype of Wireless Power and Data Acquisition System for Large Detectors

    CERN Document Server

    De Lurgio, P; Drake, G; Hashemian, R; Kreps, A; Oberling, M; Pearson, T; Sahoo, H

    2013-01-01

    A new prototype wireless data acquisition system has been developed with the intended application to read-out instrumentation systems having a large number of channels. In addition such system could be deployed in smaller detectors requiring increased mobility. The data acquisition and control system is based on 802.11n compliant hardware and protocols. In this paper we describe our case study with a single readout channel performed for a potential large detector containing photomultiplier tubes. The front-end circuitry, including a high-voltage power supply is powered wirelessly thus creating an all-wireless detector readout. The benchmarked performance of the prototype system and how a large scale implementation of the system might be realized are discussed.

  7. Research on Signal Acquisition Technology of Battery Management System Based on LTC6803-4%基于LTC6803-4的电池管理系统信号采集技术研究

    Institute of Scientific and Technical Information of China (English)

    吕杰; 宋文吉; 林仕立; 冯自平

    2013-01-01

    A signal acquisition technology of battery management system(BMS) based on LTC6803-4 is developed, with the objective of improving the lifetime, security and reliability of battery pack and reducing operation costs. The voltage signal of each cell is collected by the circuit, which based on battery stack monitor chip LTC6803-4 LTC6803-4 is powered by the isolated power to monitor battery state. The temperature signal is acquired by the expandable circuit. Meanwhile, the current signal is gathered by the double current sensors. In addition, the data of battery pack are transmitted to the central control unit through CAN. The hardware architecture and software programming are described in detail. The performance shows that the signal acquisition u-nit operates stably and the error is less. The signal acquisition technology can provide precise parameters for cell equalization, state of charge( SOC) estimation and centralized monitoring of the BMS, and meet the requirements of actual use%为延长储能系统电池使用寿命和降低电池使用成本,开发了基于LTC6803-4的电池信号采集单元.采用LTC6803-4解决了电池管理系统中电压信号采集电路复杂的问题,独立电源给芯片供电能够实现掉电情况下的电池状态监控,而可扩展的电路结构实现了温度信号的采集,并借助双重霍尔电流传感器实现了电流信号的精确采集,标准电池包的数据通过CAN总线传输到集中控制单元进行数据处理.从硬件结构和软件编程两方面做了详细讨论,性能测试表明,电池管理系统信号采集单元性能稳定,精度高,能够为电池均衡、荷电状态估算和集中监控提供精确数据,完全能够满足实际需要.

  8. The use of a VAX cluster for the DIII-D data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    McHarg, B.B. Jr.

    1991-11-01

    The DIII-D tokamak is a large fusion energy research experiment funded by the Department of Energy. The experiment currently collects nearly 40 Mbytes of data from each shot of the experiment. In the past, most of this data was acquired through the MODCOMP Classic data acquisition computers and then transferred to a DEC VAX computer system for permanent archiving and storage. A much smaller amount of data was acquired from a few MicroVAX based data acquisition systems. In the last two years, MicroVAX based systems have become the standard means for adding new diagnostic data and account for half the total data. There are now 17 VAX systems of various types at the DIII-D facility. As more diagnostics and data are added, it takes increasing of time to merge the data into the central shot file. The system management of so many systems has become increasingly time consuming as well. To improve the efficiency of the overall data acquisition system, a mixed interconnect VAX cluster has been formed consisting of 16 VAX computers. In the cluster, the software protocol for passing data around the cluster is much more efficient than using DECnet. The cluster has also greatly simplified the procedure of backing up disks. Another big improvement is the use of a VAX console system which ties all the console ports of the computers into one central computer system which then manages the entire cluster.

  9. Data Acquisition System for Electron Energy Loss Coincident Spectrometers

    Institute of Scientific and Technical Information of China (English)

    Zhang Chi; Yu Xiaoqi; Yang Tao

    2005-01-01

    A Data Acquisition System (DAQ) for electron energy loss coincident spectrometers (EELCS) has been developed. The system is composed of a Multiplex Time-Digital Converter (TDC) that measures the flying time of positive and negative ions and a one-dimension positionsensitive detector that records the energy loss of scattering electrons. The experimental data are buffered in a first-in-first-out(FIFO) memory module, then transferred from the FIFO memory to PC by the USB interface. The DAQ system can record the flying time of several ions in one collision, and allows of different data collection modes. The system has been demonstrated at the Electron Energy Loss Coincident Spectrometers at the Laboratory of Atomic and Molecular Physics, USTC. A detail description of the whole system is given and experimental results shown.

  10. The ATLAS Data Acquisition System LHC Run 2

    CERN Document Server

    Panduro Vazquez, William; The ATLAS collaboration

    2016-01-01

    The LHC has been providing pp collisions with record luminosity and energy since the start of Run 2 in 2015. In the ATLAS experiment the Trigger and Data Acquisition system has been upgraded to deal with the increased event rates. The dataflow element of the system is distributed across hardware and software and is responsible for buffering and transporting event data from the Readout system to the High Level Trigger and on to event storage. The dataflow system has been reshaped in order benefit from technological progress and to maximize the flexibility and efficiency of the data selection process. The updated dataflow system is radically different from the previous implementation both in terms of architecture and performance. The previous two level software filtering architecture, known as L2 and the Event Filter, have been merged with the Event Builder function into a single process, performing incremental data collection and analysis. This design has many advantages, among which are: radical simplificatio...

  11. Efficient Network Monitoring for Large Data Acquisition Systems

    CERN Document Server

    Savu, DO; The ATLAS collaboration; Al-Shabibi, A; Sjoen, R; Batraneanu, SM; Stancu, SN

    2011-01-01

    Though constantly evolving and improving, the available network monitoring solutions have limitations when applied to the infrastructure of a high speed real-time data acquisition (DAQ) system. DAQ networks are particular computer networks where experts have to pay attention to both individual subsections as well as system wide traffic flows while monitoring the network. The ATLAS Network at the Large Hadron Collider (LHC) has more than 200 switches interconnecting 3500 hosts and totaling 8500 high speed links. The use of heterogeneous tools for monitoring various infrastructure parameters, in order to assure optimal DAQ system performance, proved to be a tedious and time consuming task for experts. To alleviate this problem we used our networking and DAQ expertise to build a flexible and scalable monitoring system providing an intuitive user interface with the same look and feel irrespective of the data provider that is used. Our system uses custom developed components for critical performance monitoring and...

  12. The ATLAS Data Acquisition System in LHC Run 2

    CERN Document Server

    Panduro Vazquez, William; The ATLAS collaboration

    2017-01-01

    The LHC has been providing pp collisions with record luminosity and energy since the start of Run 2 in 2015. In the ATLAS experiment the Trigger and Data Acquisition system has been upgraded to deal with the increased event rates. The dataflow element of the system is distributed across hardware and software and is responsible for buffering and transporting event data from the Readout system to the High Level Trigger and on to event storage. The dataflow system has been reshaped in order benefit from technological progress and to maximize the flexibility and efficiency of the data selection process. The updated dataflow system is radically different from the previous implementation both in terms of architecture and performance. The previous two level software filtering architecture, known as Level 2 and the Event Filter, have been merged with the Event Builder function into a single process, performing incremental data collection and analysis. This design has many advantages, among which are: radical simplifi...

  13. Timing performances of a data acquisition system for Time of Flight PET

    Energy Technology Data Exchange (ETDEWEB)

    Morrocchi, Matteo, E-mail: matteo.morrocchi@pi.infn.it [University of Pisa and INFN Sezione di Pisa, I 56127 Pisa (Italy); Marcatili, Sara; Belcari, Nicola; Bisogni, Maria G. [University of Pisa and INFN Sezione di Pisa, I 56127 Pisa (Italy); Collazuol, Gianmaria [University of Padova and INFN Sezione di Padova (Italy); Ambrosi, Giovanni [INFN Sezione di Perugia, I 06100 Perugia (Italy); Corsi, Francesco; Foresta, Maurizio; Marzocca, Cristoforo; Matarrese, Gianvito [Politecnico di Bari and INFN Sezione di Bari, I 70100 Bari (Italy); Sportelli, Giancarlo; Guerra, Pedro; Santos, Andres [Universidad Politecnica de Madrid, E 28040 Madrid (Spain); Centro de Investigacion Biomedica en Red en Bioingenieria, Biomateriales y Nanomedicina (CIBER-BBN) (Spain); Del Guerra, Alberto [University of Pisa and INFN Sezione di Pisa, I 56127 Pisa (Italy)

    2012-12-11

    We are investigating the performances of a data acquisition system for Time of Flight PET, based on LYSO crystal slabs and 64 channels Silicon Photomultipliers matrices (1.2 cm{sup 2} of active area each). Measurements have been performed to test the timing capability of the detection system (SiPM matices coupled to a LYSO slab and the read-out electronics) with both test signal and radioactive source.

  14. Design of Parallel Multi-Channel Data Acquisition System Based on Distribution Network%基于分布式网络的并行多通道数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

      为满足工业监测指标多元化、站点管理集中化、数据传输实时性要求,构建一种基于分布式网络的并行多通道数据采集系统。远端数据服务中心与监测站点通过GPRS建立数据传输网络,现场监测站点具备网络管理、同步接收监测点数据及实时监测采集状态等功能。采集器硬件采用FPGA与嵌入式PC模块相结合,采用SRAM双缓存机制实现8通道高速同步采集。采用基于VC++多线程技术的网络管理机制,大幅提高了系统采样率指标,应用LabWindows/CVI集成化仪器控件完成信号分析。经仿真实验和应用于轨道监测领域,该系统稳定可靠、扩充性强、维护性好,实现了对多站点、多通道远程在线实时监测。%This paper proposes the multi-channel parallel data acquisition system based on distribution networkwhich is targeted for the demand of multi-index collection, integration of station management and real-time data transmission. With GPRS the wireless network of data transmission is connected between the remote data service center and the on-site unit. When the on-site monitoring unit is built to handle network management, simultaneous collection of data from each station and real-time monitoring for state of every data collection, the collection station is constructed to combine FPGA with embedded PC modules, and it presents high-speed synchronous data collection from eight channels by cache mechanism based on double SRAM. Multi-thread technology of VC++ , so that the sampling rate of the system is improved to a higher stage. Furthermore, the signal processing is completed by using instrument control integrated in LabWindows/CVI. The simulation experiment and application show thatthe track monitoring system is reliable, extensible and maintainable. The system proposed also realizes the remote online monitoring for multi-station and multi-channel data acquisition.

  15. Joint timing synchronization and frequency offset acquisition algorithm for MIMO OFDM systems

    Institute of Scientific and Technical Information of China (English)

    Liu Qi; Hu Bo

    2009-01-01

    For multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) sys-tems, a joint timing synchronization and frequency offset acquisition algorithm based on fractional Fourier transform (FRFT) is proposed. The linear frequency modulation signals superimposed on the data signals are used as the training signals. By performing FRFT on the receiver signals and searching the peak value of the FRFT results, the receiver can realize timing synchronization and frequency offset acquisition simultaneously. Compared with the existing methods, the proposed algorithm can provide better timing synchronization performance and larger frequency offset acquisition range even under multi-path channels with low signal to noise ratio. Theoretical analysis and simulation results prove this point.

  16. Development of a modular and scalable data acquisition system for calorimeters at a linear collider

    CERN Document Server

    Goodrick, M J; Shaw, R; Ward, D R; Bailey, D S; Kelly, M; Boisvert, V; Green, B; Misiejuk, A; Bartsch, V; Postranecky, M; Warren, M; Wing, M

    2011-01-01

    A data acquisition (DAQ) system has been developed which will read out and control calorimeters serving as prototype systems for a future detector at an electron-positron linear collider. This is a modular, flexible and scalable DAQ system in which the hardware and signals are standards-based, using FPGAs and serial links. The idea of a backplaneless system was also pursued with a commercial development board housed in a PC and a chain of concentrator cards between it and the detector forming the basis of the system. As well as describing the concept and performance of the system, its merits and disadvantages are discussed.

  17. An Incremental Rule Acquisition Algorithm Based on Rough Set

    Institute of Scientific and Technical Information of China (English)

    YU Hong; YANG Da-chun

    2005-01-01

    Rough Set is a valid mathematical theory developed in recent years,which has the ability to deal with imprecise,uncertain,and vague information.This paper presents a new incremental rule acquisition algorithm based on rough set theory.First,the relation of the new instances with the original rule set is discussed.Then the change law of attribute reduction and value reduction are studied when a new instance is added.Follow,a new incremental learning algorithm for decision tables is presented within the framework of rough set.Finally,the new algorithm and the classical algorithm are analyzed and compared by theory and experiments.

  18. 75 FR 2457 - Defense Federal Acquisition Regulation Supplement; Business Systems-Definition and Administration...

    Science.gov (United States)

    2010-01-15

    ... define contractor business systems as accounting systems, estimating systems, purchasing systems, earned... conditions of this contract. Business systems means-- (1) Accounting system, if this contract includes the... Federal Acquisition Regulation Supplement; Business Systems--Definition and Administration (DFARS...

  19. X-Y振镜扫描式舌诊高光谱采集系统%Hyperspectral Acquisition System for Tongue Inspection Based on X-Y Scanning Galvanometer

    Institute of Scientific and Technical Information of China (English)

    李刚; 赵静; 林凌; 张宝菊

    2011-01-01

    针对目前舌诊研究中在舌体信息全面获取方面存在严重不足,将高光谱技术用到舌诊的研究中来,提出了一种基于X-Y振镜扫描式舌诊高光谱采集系统.通过模拟实验,采集与舌体大小相似图片的高光谱信息,验证了该系统可以用于舌体高光谱信息采集,实验结果表明,与现有舌诊客观化研究相比,该系统可以获得更多的舌体信息,为舌诊客观化研究提供了一种新途径.%Hyperspectral was used for tongue inspection in the present work to resolve the problem that information of current research for tongue inspection was inadequate. A hyperspectral acquisition system based on X-Y scanning galvanometer was also proposed due to the high cost of the current hyperspectral apparatus. An experiment was made to test the ability of this system. By collecting the hyperspectral information of color pictures with size similar to the tongue, the results of experiment showed that this system can acquire more information of tongue than other methods, and this method can provide a new way for tongue inspection.

  20. 基于 FPGA 的核信号采集主控系统设计%Design of Main Control System for Nuclear Signal Acquisition Based on FPGA

    Institute of Scientific and Technical Information of China (English)

    葛青; 葛良全; 吴建平

    2014-01-01

    介绍了以FPGA为控制核心的核信号采集主控系统的设计。 FPGA内实现的功能包括与计算机的通信,对ADC采样的控制,对采样信号的数字甄别、存储等。可在线对阈值及ADC的寄存器进行设置。整个控制系统包括存储器( FIFO)在一片FPGA内实现,系统硬件结构简单,能有效地提升核分析仪器的性能并有利于其小型化。%Design of main control system for nuclear signal acquisition based on FPGA was introduced .The functions are all implemented in the FPGA including communicating with the computer , controlling sampling of ADC, threshold discrimination and storage of digital nuclear signal , etc.Threshold and the ADC registers can be set online.The whole control system including a memory (FIFO) is implemented in a FPGA.The hardware of the system is simple and the power consumption is low .The performance of the instrument is improved effec-tively and the size is reduced also .

  1. 基于MSP430的人体生理参数采集系统设计%Design of Human Physiological Parameter Acquisition System Based on MSP430

    Institute of Scientific and Technical Information of China (English)

    袁昌成; 赵治栋; 殷成龙

    2015-01-01

    In view of the increasing aging population and the intention of family health detection equipment and other problems ,the wearable human physiological parameter acquisition system based on MCU MSP 430 is designed.According to the theory of Lambert-Bear,the system exploits the alternate transmission of red and infrared red to measure the pulse blood oxygen , and the negative temperature coefficient thermistor MF 54 is used for the measurement of body temperature .As is shown in the test results , the system has advantages of portability and reliability ,attenuating the risks of the physiological disease efficiently .%针对人口老龄化加剧和家庭健康检测设备紧张等问题,设计了基于MSP430单片机的可穿戴式人体生理参数采集系统。根据Lambert-Beer光吸收定律,利用红光和红外光的交替透射实现脉搏血氧测量,通过负温度系数热敏电阻MF54实现体温测量功能。测试结果表明,生理参数采集系统具有便携、可靠、实时监测的特点,有效地预防生理疾病的发生。

  2. A Design of Dorsal Hand Vein Image Acquisition System Based on Near Infrared Technology%近红外手背静脉图像采集系统的研究与设计

    Institute of Scientific and Technical Information of China (English)

    潘晓苹; 汪天富; 庄礼杰; 刘军

    2013-01-01

    Dorsal hand vein pattern recognition is a new biometric identification technology, with the virtue of living body recognition , inner characteristic, and non-contact. The image acquisition system based on near infrared technology is popular because of lost cost. The system is designed using near infrared technology. The experimental results show that the system can capture high-contrast dorsal hand vein images under 850 nm near infrared.%  手背静脉识别是新颖的身份认证技术,与指纹识别相比,具有活体识别、内部特征、非接触式等优点。基于近红外技术的手背图像采集设备具有制作成本低的优势,是实际应用中首选的技术。文章研究了基于近红外技术的手背静脉图像采集系统及制作,实验结果表明,在850 nm 的近红外光波下,可以采集到高对比度的手背静脉图像。对手背静脉身份识别系统制作具有参考价值。

  3. A multi-parameter data acquisition system for the collision research platform at Shanghai EBIT

    Institute of Scientific and Technical Information of China (English)

    WANG Xincheng; WEI Baoren; YANG Yang; SHEN Yang; XIAO Jun; ZHANG Xuemei; ZOU Yaming

    2009-01-01

    In this work we describe a multi-parameter data acquisition system (DAQ) which has been developed for the Shanghai EBIT.This system is operated at the collision research platform which includes a recoil-ion momentum spectrometer (RIMS).We have employed DAQ based on the VME system,which is a very fast developing system within the RIMS community,and with which we can reach data transfer rates of up to 160 Mb.s-1.The software developed for DAQ based on UnisDX-XP is also described.

  4. 基于 ZigBee 的光伏板数据采集系统设计%Design of a ZigBee-based Photovoltaic Panel Data Acquisition System

    Institute of Scientific and Technical Information of China (English)

    薛彬; 韩如成; 刘利民

    2016-01-01

    In view of high energy consumption,high cost and tedious collection method for increasingly populated photovoltaic panels,a ZigBee-based data acquisition system is designed,using ARMprocessor as control core and CC2530 containing a ZigBee module of low power consumption as coordinator to set up a wireless network.Furthermore,temperature,voltage,current,light intensity and other data of the photovoltaic panel are collected with help of various data acquisition sensors.Experiment tests verify that this design can effectively solve such problems as complex wiring of the cable network,tedious collection method and difficult implementation in the process of photovoltaic panel data acquisition.Moreover,it has strong expandability,low cost,stable data transmission,big collection capacity,high speed,high efficiency and practicability.Therefore,it has good application value.%针对目前光伏板的应用越来越普及,但能量耗损大,成本高,采集方式繁琐等问题,设计一种基于 ZigBee 技术的数据采集系统, ARM处理器作为控制的核心,使用具有低功耗 ZigBee 模块的 CC2530作为协调器来搭建无线网络,同时配合各种数据采集传感器来采集光伏板上的温度,电压,电流和光照强度等数据。通过实验可以验证设计有效解决了光伏板数据采集过程中有线网络复杂的布线,采集方式的繁琐,不易实现等问题,同时具有很强的扩展性,成本低,数据传输稳定,采集量大,速度快,有效实用,具有很好的实用价值。

  5. Design and Implementation of High Speed Data Acquisition System Based on FPGA%基于FPGA的高速数据采集系统设计与实现

    Institute of Scientific and Technical Information of China (English)

    邵磊; 倪明

    2011-01-01

    设计一种基于现场可编程门阵列(FPGA)的高速数据采集系统,将AT84AD001B高速A/D转换器与StratixⅡ系列的FPGA作为数据采集和处理主体,并在紧凑型外部设备互连系统平台上进行性能指标测试.结果表明,该系统可实现采样率为l GS/s的双通道和采样率为2 GS/s的单通道交替并行数据采集性能,以及带宽达到200 MHz、放大倍数达到5倍的前端模拟信号调理性能,具有模块化、坚固性、可靠性和可扩展性等特点.%This paper designs a high speed data acquisition system based on Field Programmable Gate Array(FPGA). It makes AT84AD001B high-speed A/D converter and Stratix II series of FPGA as data collection and processing main body, and goes on performance index test on Compact Peripheral Component Interconnect(cPCI). Result shows that the sampling rate is 1 GS/s dual channel and sampling rate is 2 GS/s single channel alternate parallel data acquisition performance, front analog signal conditioning performance for 200 MHz bandwidth, 5 times magnification. It has the characteristics of modularization, sturdiness, high reliability and scalability.

  6. 基于FPGA的双路高速数据采集系统的设计%Design of dual-channel super high-speed data acquisition system based on FPGA

    Institute of Scientific and Technical Information of China (English)

    王瑶; 杨晓非

    2011-01-01

    以脉冲激光测距为应用背景,设计了1种双路1 Gsps采样率的高速数据采集系统的设计方案,该系统以EP2S60系列的FPGA为核心控制模块,ADC08D1000为模数转换芯片测量I、Q两路脉冲信号时间间隔.FPGA的资源分布决定ADC输出的两路信号(I、Q)需由FPGA的两侧共4个BANK接收,由此会造成系统测量的固定误差,利用ADC的并行交替采样模式修正该固定误差,大量测试数据表明,该系统能够实现双路1 Gsps的采样率,系统工作稳定且测量精度可控制在1 ns.%A design of a dual-channel data acquisition system with each channel up to 1 Gsps sampling rate based on the pulsed laser range finder was described in this paper. The system calculates time-interval between the two pulse signals of I and Q channel using EP2S60 serials FPGA and ADC08D1000 A/D coverter. For the distribution of the resources of the FPGA,the outputs of the ADC which are I and Q signal are received by two sides,four banks,of FPGA. Because of this,system errors are caused. By using the time-interleaved sampling mode of the ADC,a practical method to fix the errors is found. A series of testing prove that the sampling rate of the data acquisition system can be up to 1 Gsps,the system works stably and the precison of time-interval can be controlled in 1 ns.

  7. A High Speed Acquisition System Based on Nios II for the Electronic Cabin Signal Group%基于 Nios II 的导引头电子舱信号群高速采集系统

    Institute of Scientific and Technical Information of China (English)

    秦文姬; 李力

    2016-01-01

    导引头电子舱是导弹探测、跟踪目标的部件,是导弹系统的关键部分,因此电子舱产品使用前的调试和检测至关重要。介绍了一种基于 Nios II 的导引头电子舱信号群高速采集系统。该系统采用 Cyclone II 系列 EP2C35芯片,以 Nios II 软核为核心处理器,完成了对 A /D 转换后的30路信号群的高速采集处理。与之前采用 PCI 总线方案相比,此方案简化了硬件电路、减小了设备体积、降低了成本,可以满足不同产品的各种逻辑电平、编码装定、参数预置及功能拓展升级的需求,提高了系统的可靠性和智能化分析处理实验数据的水平。%As a key part of the missile system ,the electronic cabin can detect and track the target missile,and it is required to be debugged and tested before using.A high speed data acquisition system based on Nios II is designed and realized for the electronic cabin signal group in this paper.Using cyclone series EP2C35 chip and Nios II as core processor,the system can process the signals converted by A /D and complete the high speed data acquisition.Compared with the previous PCI bus program,this system has some advantages,such as simplifying the hardware circuit,reducing equipment size and costs, adapting to a variety of different products'logic level,coding stapling and satisfying needs of presetting parameters and functional expansion upgrade.And it improves the level of reliability and intelligent analysis of experimental data processing system.

  8. Development of a single-shot CCD-based data acquisition system for time-resolved X-ray photoelectron spectroscopy at an X-ray free-electron laser facility.

    Science.gov (United States)

    Oura, Masaki; Wagai, Tatsuya; Chainani, Ashish; Miyawaki, Jun; Sato, Hiromi; Matsunami, Masaharu; Eguchi, Ritsuko; Kiss, Takayuki; Yamaguchi, Takashi; Nakatani, Yasuhiro; Togashi, Tadashi; Katayama, Tetsuo; Ogawa, Kanade; Yabashi, Makina; Tanaka, Yoshihito; Kohmura, Yoshiki; Tamasaku, Kenji; Shin, Shik; Ishikawa, Tetsuya

    2014-01-01

    In order to utilize high-brilliance photon sources, such as X-ray free-electron lasers (XFELs), for advanced time-resolved photoelectron spectroscopy (TR-PES), a single-shot CCD-based data acquisition system combined with a high-resolution hemispherical electron energy analyzer has been developed. The system's design enables it to be controlled by an external trigger signal for single-shot pump-probe-type TR-PES. The basic performance of the system is demonstrated with an offline test, followed by online core-level photoelectron and Auger electron spectroscopy in 'single-shot image', 'shot-to-shot image (image-to-image storage or block storage)' and `shot-to-shot sweep' modes at soft X-ray undulator beamline BL17SU of SPring-8. In the offline test the typical repetition rate for image-to-image storage mode has been confirmed to be about 15 Hz using a conventional pulse-generator. The function for correcting the shot-to-shot intensity fluctuations of the exciting photon beam, an important requirement for the TR-PES experiments at FEL sources, has been successfully tested at BL17SU by measuring Au 4f photoelectrons with intentionally controlled photon flux. The system has also been applied to hard X-ray PES (HAXPES) in `ordinary sweep' mode as well as shot-to-shot image mode at the 27 m-long undulator beamline BL19LXU of SPring-8 and also at the SACLA XFEL facility. The XFEL-induced Ti 1s core-level spectrum of La-doped SrTiO3 is reported as a function of incident power density. The Ti 1s core-level spectrum obtained at low power density is consistent with the spectrum obtained using the synchrotron source. At high power densities the Ti 1s core-level spectra show space-charge effects which are analysed using a known mean-field model for ultrafast electron packet propagation. The results successfully confirm the capability of the present data acquisition system for carrying out the core-level HAXPES studies of condensed matter induced by the XFEL.

  9. Iron acquisition and regulation systems in Streptococcus species.

    Science.gov (United States)

    Ge, Ruiguang; Sun, Xuesong

    2014-05-01

    Gram-positive Streptococcus species are responsible for millions of cases of meningitis, bacterial pneumonia, endocarditis, erysipelas and necrotizing fasciitis. Iron is essential for the growth and survival of Streptococcus in the host environment. Streptococcus species have developed various mechanisms to uptake iron from an environment with limited available iron. Streptococcus can directly extract iron from host iron-containing proteins such as ferritin, transferrin, lactoferrin and hemoproteins, or indirectly by relying on the employment of specialized secreted hemophores (heme chelators) and small siderophore molecules (high affinity ferric chelators). This review presents the most recent discoveries in the iron acquisition system of Streptococcus species - the transporters as well as the regulators.

  10. Design and implementation of information acquisition system architecture for multi-sensor robots

    Institute of Scientific and Technical Information of China (English)

    Chen Guoliang; Huang Xinhan; Wang Min

    2007-01-01

    A multi-layer controller architecture based on digital signal processor(DSP)and on-chip MCU was proposed for multi-sensor information acquisition system;it consisted of a data acquisition unit and a data fusion unit,and used a host controller to connect the two units into all integrated system.Compared with architectures of traditional acquisition system,this architecture had good openness and goad adaptability of algorithms in hardware.To validate its feasibility,a small-scale prototype was cleverly designed,which adopted ADuC812.tMS320F206 and 89C51 as controllers,and had 16-channel ADC and 12-channel DAC with high accuracy of 12-bit.The Interfaces between different controllers were introduced in detail.Some basic parameters of the prototype were presented by board-level tests and by comparison with other two systems.The prototype Was employed to provide on-line state measurement,parameter estimation and decision-making for trajectory tracking of wheeled mobile robot.Experimental results show that the prototype achieves the goals of data acquisition,fusion and control perfectly.

  11. Real-time multi-channels infrared image acquisition system based on FPGA%基于FPGA的多通道红外图像实时采集系统

    Institute of Scientific and Technical Information of China (English)

    李燕; 汤心溢; 葛军; 张浩钧

    2012-01-01

    不同于传统的单通道采集系统,RMCIIA拥有3个独立的数据通道,这些数据通道可以匹配不同数据形式和数据速率的红外探测器,并且根据不同的数据采集需求,FPGA中功能模块的组成结构可以进行重构.RMCIIA还运用新一代的高速总线—PCI Express总线技术,对3个独立通道的大量图像数据进行高速数据传输,并通过实行“循环优先级”的VC仲裁策略进行流量控制和多通道调度,从而为进一步的多波段红外图像处理和图像融合算法提供实时的、同时的多通道数据流.首先详细描述RMCIlA的系统结构和FPGA内算法功能模块,然后对多通道数据采集所面临的新问题提出设计的解决方案,最后由实验测定系统的传输速率,并且与传统的图像采集系统进行对比.总之,RMCIIA 实现了一个统一的多通道红外图像的实时采集系统.%Compared with the traditional imaging system with limited data rate and only one data channel, a real-time multi-channels infrared image acquisition (RMCIIA) system based on FPGA was proposed. RMCIIA has three data channels, each of which can connect up with detectors' interface in different data format and various data rate. And its FPGA architecture is able to be reconfigured for the diverse demands of data collection. RMCIIA also set up a new generation of high-speed bus-PCI Express bus, for rapidly transferring massive image data of three independent channels in high speed, and the flow control and multi-channels dispatch algorithms are applied by implementing "round robin priority arbitration" mechanism among VCs, so as to supply real-time and simultaneous multi-channels data flows for the schemes of multi-bands infrared image processing and image fusion. Firstly, the RMCIIA's system structure and the design of algorithms function modules on FPGA were described in detail. Then, the design solutions for the new problems with which multi-channels data acquisition system

  12. A new acquisition and imaging system for environmental measurements: an experience on the Italian cultural heritage.

    Science.gov (United States)

    Leccese, Fabio; Cagnetti, Marco; Calogero, Andrea; Trinca, Daniele; di Pasquale, Stefano; Giarnetti, Sabino; Cozzella, Lorenzo

    2014-05-23

    A new acquisition system for remote control of wall paintings has been realized and tested in the field. The system measures temperature and atmospheric pressure in an archeological site where a fresco has been put under control. The measuring chain has been designed to be used in unfavorable environments where neither electric power nor telecommunication infrastructures are available. The environmental parameters obtained from the local monitoring are then transferred remotely allowing an easier management by experts in the field of conservation of cultural heritage. The local acquisition system uses an electronic card based on microcontrollers and sends the data to a central unit realized with a Raspberry-Pi. The latter manages a high quality camera to pick up pictures of the fresco. Finally, to realize the remote control at a site not reached by internet signals, a WiMAX connection based on different communication technologies such as WiMAX, Ethernet, GPRS and Satellite, has been set up.

  13. A New Acquisition and Imaging System for Environmental Measurements: An Experience on the Italian Cultural Heritage

    Directory of Open Access Journals (Sweden)

    Fabio Leccese

    2014-05-01

    Full Text Available A new acquisition system for remote control of wall paintings has been realized and tested in the field. The system measures temperature and atmospheric pressure in an archeological site where a fresco has been put under control. The measuring chain has been designed to be used in unfavorable environments where neither electric power nor telecommunication infrastructures are available. The environmental parameters obtained from the local monitoring are then transferred remotely allowing an easier management by experts in the field of conservation of cultural heritage. The local acquisition system uses an electronic card based on microcontrollers and sends the data to a central unit realized with a Raspberry-Pi. The latter manages a high quality camera to pick up pictures of the fresco. Finally, to realize the remote control at a site not reached by internet signals, a WiMAX connection based on different communication technologies such as WiMAX, Ethernet, GPRS and Satellite, has been set up.

  14. A Modular VME Data Acquisition System for Counter Applications at the GSI Synchrotron

    CERN Document Server

    Liakin, D A

    2003-01-01

    Particle counters perform the control of beam loss and slowly extracted currents at the heavy ion synchrotron (SIS) at GSI. A new VME/Lynx - PC/Linux based data acquisition system has been developed to combine the operating purposes beam loss measurement, spill analysis, spill structure measurement and matrix switching functionality in one single assembly. In this paper a detailed PC-side software description is presented. To achieve best system stability, the software has been divided into time critical networking and data deploying threads and low or normal priority interface tasks. Some new abilities in the fields of data computation and presentation are reported. A hardware description is presented, in detail a programmable GSI-EVENT controller, which is based on an ordinary 8 bit RISC microprocessor and which has been integrated into the system, to synchronize the data acquisition with the sophisticated “virtual accelerator” timing at GSI. First experiences gained while the commission...

  15. The Cathode Strip Chamber Data Acquisition System for CMS

    CERN Document Server

    Bylsma, B G; Gilmore, J R; Gu, J H; Ling, T Y

    2007-01-01

    The Cathode Strip Chamber (CSC) [1] Data Acquisition (DAQ) system for the CMS [2] experiment at the LHC [3] will be described. The CSC system is large, consisting of 218K cathode channels and 183K anode channels. This leads to a substantial data rate of ~1.5GByte/s at LHC design luminosity (1034cm-2s-1) and the CMS first level trigger (L1A) rate of 100KHz. The DAQ system consists of three parts. The first part is on-chamber Cathode Front End Boards (CFEB)[4], which amplify, shape, store, and digitise chamber cathode signals, and Anode Front End Boards (AFEB)[5], which amplify, shape and discriminate chamber anode signals. The second part is the Peripheral Crate Data Acquisition Motherboards (DAQMB), which control the onchamber electronics and the readout of the chamber. The third part is the off-detector DAQ interface boards, which perform real time error checking, electronics reset requests and data concentration. It passes the resulting data to a CSC local DAQ farm, as well as CMS main DAQ [6]. All electron...

  16. System design of the METC automatic data acquisition and control system

    Energy Technology Data Exchange (ETDEWEB)

    Goff, D. R.; Armstrong, D. L.

    1982-02-01

    A system of computer programs and hardware was developed by the Instrumentation Branch of the Morgantown Energy Technology Center (METC) to provide data acquisition and control features for research projects at the site. The Automatic Data Acquisition and Control System (ADACS) has the capability of servicing up to eight individual projects simultaneously, providing data acquisition, data feedback, and process control where needed. Several novel software features - including a data table driven program, extensive feedback in real time, free format English commands, and high reliability - were incorporated to provide these functions.

  17. Computer system design description for the spare pump mini-dacs data acquisition and control system

    Energy Technology Data Exchange (ETDEWEB)

    Vargo, G.F. Jr.

    1994-09-29

    The attached document outlines the computer software design for the mini data acquisition and control system (DACS), that supports the testing of the spare pump for Tank 241-SY-101, at the maintenance and storage facility (MASF).

  18. 75 FR 76692 - Defense Federal Acquisition Regulation Supplement; Business Systems-Definition and Administration...

    Science.gov (United States)

    2010-12-09

    ... Federal Acquisition Regulation Supplement; Business Systems--Definition and Administration (DFARS Case... INFORMATION: I. Background DoD published a proposed rule for Business Systems--Definition and...

  19. Hardware Design and Algorithm Implementation of Three-Dimension Attitude Acquisition System Based on DSP%基于DSP的三维测姿系统硬件设计和算法实现

    Institute of Scientific and Technical Information of China (English)

    王永胜; 钟宜生

    2009-01-01

    For the miniature unmanned helicopter system, a three-dimension attitude acquisition system based on DSP controller is introduced, including implementation and verification of the hardware circuit and the qua-temion algorithm. The system is constituted of yaw rate gyros, filter circuits and a platform based on DSP.Through the filter circuit, the analog signals from gyros are sampled by AD channels in the platform and smoothed by digital filter, then applied to calculate the attitude data by the quatemion algorithm. The problems and corresponding solutions are stated for the design and implementation process of hardware circuits and algo-rithms. The effectiveness of the system is demonstrated by the experiment results.%对于微小型无人直升机系统,本文介绍了基于DSP的三维测姿系统的硬件电路设计和四元数解算算法的实现及验证.该系统的硬件部分由角速率陀螺、滤波电路和DSP系统板等组成.角速率陀螺输出信号经过硬件滤波后由AD通道采集,经过数字滤波后,利用四元数算法解算出姿态数据.文中提出了硬件设计和实现及解算算法实现中需要注意的问题和相应的解决方案,测试结果表明该系统是有效的.

  20. System-of-Systems Acquisition: Alignment and Collaboration

    Science.gov (United States)

    2011-10-11

    uncertainty management in systems engineering, complex systems and complexity theory , system scaling, system-of-systems engineering and architecting...computer timing control, bandwidth allocation, heuristic algorithms, nonlinear estimation, perturbation theory , differential equations, and...production projects espoused in Ishak, Archimede , and Charbonnaud (2010). The kernel of this system is the SCEP (Supervisor, Customer, Environment

  1. A Modular Object Oriented Data Acquisition System for the Gravitational Wave AURIGA Experiment

    CERN Document Server

    Ceseracciu, A; Ortolan, A

    2003-01-01

    The new Data Acquisition system for the gravitational wave detector AURIGA has been designed from the ground up in order to take advantage of hardware and software platforms that became available in recent years; namely, i386 computers running Linux-based free software. This paper describes how advanced software development technologies, such as Object Oriented design and programming and CORBA infrastructure, were exploited to realize a robust, distributed, flexible, and extensible system. Every agent of the Data Acquisition System runs inside an heavyweight framework, conceived to transparently take care of all the agents intercommunication, synchronization, dataflow. It also presents an unified interface to the command and monitoring tools. The DAQ logic is entirely contained in each agent's specialized code. In the case of AURIGA the dataflow is designed as a three tier: frontend, builder, consumer. Each tier is represented by a set of agents possibly running on different hosts. This system is well fit for...

  2. Latency in Distributed Acquisition and Rendering for Telepresence Systems.

    Science.gov (United States)

    Ohl, Stephan; Willert, Malte; Staadt, Oliver

    2015-12-01

    Telepresence systems use 3D techniques to create a more natural human-centered communication over long distances. This work concentrates on the analysis of latency in telepresence systems where acquisition and rendering are distributed. Keeping latency low is important to immerse users in the virtual environment. To better understand latency problems and to identify the source of such latency, we focus on the decomposition of system latency into sub-latencies. We contribute a model of latency and show how it can be used to estimate latencies in a complex telepresence dataflow network. To compare the estimates with real latencies in our prototype, we modify two common latency measurement methods. This presented methodology enables the developer to optimize the design, find implementation issues and gain deeper knowledge about specific sources of latency.

  3. System and method for acquisition management of subject position information

    Energy Technology Data Exchange (ETDEWEB)

    Carrender, Curt (Morgan Hill, CA)

    2007-01-23

    A system and method for acquisition management of subject position information that utilizes radio frequency identification (RF ID) to store position information in position tags. Tag programmers receive position information from external positioning systems, such as the Global Positioning System (GPS), from manual inputs, such as keypads, or other tag programmers. The tag programmers program each position tag with the received position information. Both the tag programmers and the position tags can be portable or fixed. Implementations include portable tag programmers and fixed position tags for subject position guidance, and portable tag programmers for collection sample labeling. Other implementations include fixed tag programmers and portable position tags for subject route recordation. Position tags can contain other associated information such as destination address of an affixed subject for subject routing.

  4. System and method for acquisition management of subject position information

    Energy Technology Data Exchange (ETDEWEB)

    Carrender, Curt

    2005-12-13

    A system and method for acquisition management of subject position information that utilizes radio frequency identification (RF ID) to store position information in position tags. Tag programmers receive position information from external positioning systems, such as the Global Positioning System (GPS), from manual inputs, such as keypads, or other tag programmers. The tag programmers program each position tag with the received position information. Both the tag programmers and the position tags can be portable or fixed. Implementations include portable tag programmers and fixed position tags for subject position guidance, and portable tag programmers for collection sample labeling. Other implementations include fixed tag programmers and portable position tags for subject route recordation. Position tags can contain other associated information such as destination address of an affixed subject for subject routing.

  5. Analysis of System Training Impact for Major Defense Acquisition Programs (MDAPs): Training Systems Acquisition

    Science.gov (United States)

    2012-07-01

    evidenced in our other case studies. However, with the rapid production and deployment of the vehicles in 2007–2008, the operators began to experience...Background The Patriot system began because of the need to replace an aging and limited air defense system in the 1970s, the Nike -Hercules, and...The program sponsors of the Patriot also desired to take advantage of technological innovation and information superiority to enhance overall

  6. Electrical Parameter Acquisition System Based on S7-300/200 PLC and Modbus Protocol%基于S7-300/200PLC和Modbus协议的电力参数采集系统

    Institute of Scientific and Technical Information of China (English)

    徐鹏鹏

    2011-01-01

    介绍了基于S7-300/200 PLC和Modbus协议的电力参数采集系统的硬件结构和S7-200 PLC的程序设计,阐述了S7-300 PLC通过MPI通信读取S7- 200 PLC中存放的电量参数的过程.实际应用表明,该系统应用简便,运行稳定可靠,在工程上具有一定的参考意义.%The paper introduced hardware structure of electrical parameter acquisition system based on S7-300/200 PLC and Modbus protocol and design of program of S7-200 PLC,and expounded process that S7-300 PLC reads electrical parameters stored in S7-200 PLC through MPI communication. The practical application showed that the system is simple and convenient in application,stable and reliable in running,which has certain reference value in engineering.

  7. 基于PCI9118数据采集卡的车削力测量系统设计%The Design of the Cutting Force Measuring System Based on PCI 9118 Data Acquisition Card

    Institute of Scientific and Technical Information of China (English)

    郭浩泽

    2015-01-01

    采用基于应变片式测力仪、PCI9118数据采集卡及Visual Basic编程语言的车削力测量系统,实现了对采集来的切削数据的向间标定系数的基于一元线性回归方程的计算,并分析了数据的相关性;通过实际加工测量,利用标定系数得到了实际切削力的大小,求出了3个方向的关于进给量和背吃刀量的切削力经验公式,为车削加工提供了参考数据。%By using the cutting force measuring system based on strain gage type cutting dynamometer, PCI 9118 data acquisition card and Visual Basic programming language, this paper realizes the monadic linear regression equation based calculation of the interphase calibration coefficient of the collected cutting data, and analyzes the correlation of the data, and th ough the actual processing measurement, obtains the size of the actual cutting force by using the calibration coefficient, establishes the cutting force experience formulas of the cutting feed and back cutting depth on the three directions,providing the reference data for the lathe work.

  8. NanoDrill: 1 Actuator Core Acquisition System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — We propose to design, build, and test a sample acquisition drill weighing less than 1 kg. The drill uses a novel method of core or powder acquisition, and is...

  9. NanoDrill: 1 Actuator Core Acquisition System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — We propose to design, build and test a 1 kg, single actuator, sample acquisition drill. The drill uses a novel method of core or powder acquisition. The core...

  10. PCI express bus design of large format array IRFPA high-speed acquisition system

    Science.gov (United States)

    Huang, Zewu; Zheng, Xing; Zeng, Xingxin; Liu, Ziji

    2012-10-01

    In this paper, a novel solution of PCI Express Bus was designed to improve the data transfer rate for large format array infrared imaging acquisition system. In this structure, an embedded PCI Express hard intellectual property (IP) block of Stratix IV GX FPGA was used, and the protocol stack module is totally compliant with PCI Express base specification Gen 2.0 which includes PHY-MAC, Data Link, and transaction layers. In order to communicate with CPU through computer PCIe root port, a pipeline structure was established with two SSRAMs to carry out the function of real-time data process. The DMA mode was adopted for the high-speed data transmission on the PCI Express Bus. Some other control logic parts such as detector drive signal generator - display controller and PCIe configuration module were also designed and introduced in this paper. According to the evaluation, the data transmission speed was up to 5.6Gbps, which means that this system could meet the qualifications of infrared imaging data acquisition. Compared with traditional infrared imaging data acquisition systems, this solution is more integrated and faster, so it is suitable for larger format and higher frame rate of infrared focal plane image acquisition in nowadays and future.

  11. The Keithley System 570 Data Acquisition Workstation: A tool for setting up control and data acquisition in psychophysiological experiments.

    NARCIS (Netherlands)

    Wijker, W.; van der Molen, M.W.; Molenaar, P.C.M.; Maarsse, F.J.; Mulder, L.J.M.

    1991-01-01

    Discusses an experimental psychophysiological set-up using the Keithley System 570 Data Acquisition Workstation. Keithley System consists of hardware and software components which are capable of dealing with most of the demands required in experimental psychology. Reviews the hardware and software o

  12. 基于XLP技术的超低功耗数据采集系统设计%Design of Ultra-Low Power Data Acquisition System Based on the XLP Technology

    Institute of Scientific and Technical Information of China (English)

    李闯泽; 姚金杰; 王黎明; 张回园

    2011-01-01

    The present portable acquisition device for gas concentration has many disadvantages including big volume, high power consumption and single function. On account of these disadvantages, we designed a new portable gas concentration acquisition device with characters of small volume, low power consumption and multifunction by using the low-power chips-PIC16F193X which was based on the technology of XLP and belonged to Microchip Company. In this paper, we first analyzed the low-consumption design principle of hardware for the whole system, and then a corresponding low- power consumption program was designed according to the character of low- power consumption. The whole software program in fact was designed based on finite state machine. Finally, low-power consumption test was performed for the whole system. Testing results turned out that the new method of design could prolong the working time six times comparing with the conventional method.%针对目前便携式气体浓度数据采集仪体积大、功耗高以及功能单一等缺点,采用Microchip公司基于XLP技术的低功耗器件-PIC16F193X设计了一款多功能、小体积、低功耗的便携式数据采集仪.本文首先分析了整个系统的硬件低功耗设计原理,然后针对系统的低功耗特点,进行了低功耗的软件程序设计.整个软件采用了基于有限状态机的设计,最后对整个系统进行了低功耗特性测试,测试结果表明采用这种设计方法比传统的设计方法能延长便携式数据采集仪的工作时间6倍以上.

  13. Impact of Contract Bundling and Consolidation on Defense Acquisition System and Defense Industrial Base: The Case of the U.S. Department of the Navy

    Science.gov (United States)

    2012-04-27

    or 39% of the value of such contracts. Next, a group of nine firms—EDO Communications and Countermeasures Systems, Lockheed Martin, Sociedad ...49,437,854.00 5.94% SOCIEDAD ESPAIOLA DE MONTAJES INDUSTRIALES SA $60,000,000.00 7.21% LOCKHEED MARTIN CORPORATION $79,342,491.00 9.54% EDO

  14. 基于FPGA的多路数据采集与传输系统设计%Design of Multi-Channel Data Acquisition and Transmission System Based on FPGA

    Institute of Scientific and Technical Information of China (English)

    李华; 刘宝盈; 刘萌; 谢谦

    2014-01-01

    In order to acquire 8 signals and transmit them to the application system accurately,this paper presents an improved FPGA combined with ADC and CAN bus based data acquisition and transmission system. Firstly,AD is controlled by FPGA to acquire 8 analog signals and convert them to one bit digital signal which is sent to FPGA.Then the serial-to-parallel operation and data reconstruction was used to process the one bit signal.At last,the signal was transmitted to application via the CAN bus system.Experimental results proved,when the conversion rate of ADC128 is 50kSPS,the system can work normally.The system has advantages of reliable and steady function,strong real-time and good universality.%为了准确采集8路数据并稳定传输给应用系统,文章设计了一套基于FPGA结合ADC和CAN总线的数据采集与传输系统。首先,AD在FPGA的控制下将8路模拟信号采集并以一位数字信号的形式输出给FPGA,然后经过串并转换与数据重组,最后通过CAN总线传输给应用系统。实验结果表明,AD以50KSPS采集数据时,系统工作正常。整个系统性能稳定可靠、实时性强,具有较好的通用性。

  15. Language acquisition is model-based rather than model-free.

    Science.gov (United States)

    Wang, Felix Hao; Mintz, Toben H

    2016-01-01

    Christiansen & Chater (C&C) propose that learning language is learning to process language. However, we believe that the general-purpose prediction mechanism they propose is insufficient to account for many phenomena in language acquisition. We argue from theoretical considerations and empirical evidence that many acquisition tasks are model-based, and that different acquisition tasks require different, specialized models.

  16. RF and data acquisition systems for Fermilab's ILC SRF cavity vertical test stand

    Energy Technology Data Exchange (ETDEWEB)

    Ozelis, Joseph P.; Nehring, Roger; /Fermilab; Grenoble, Christiana; Powers, Thomas J.; /Jefferson Lab

    2007-06-01

    Fermilab is developing a facility for vertical testing of SRF cavities as part of its ILC program. The RF system for this facility is based on the proven production cavity test systems used at Jefferson Lab for CEBAF and SNS cavity testing. The design approach is modular in nature, using commercial-off-the-shelf (COTS) components. This yields a system that can be easily debugged and modified, and with ready availability of spares. Comprehensive data acquisition and control is provided by a PXI-based hardware platform in conjunction with software developed in the LabView programming environment.

  17. 基于PCI-1713模块的高速数据采集系统的设计%The high-speed data acquisition system based on PCI-1713 module design

    Institute of Scientific and Technical Information of China (English)

    葛宁

    2014-01-01

    数据采集指将模拟信号采集,转换成数字信号后,再由计算机进行存储、处理、显示和输出的过程。数据采集系统的(DAS)是模拟量与数字量之间的转换接口,在自动测试、通信、信号处理领域占有重要地位。本设计利用PCI-1713完成高速数据采集系统的设计。%Data acquisition refers to convert analog signal acquisition,into digital signal after,again by the computer for storage,processing,display and output of the process.Data acquisition system (DAS)is the conversion between analog and digital interface,the automatic testing,communications,occupies an important position in the field of signal processing.This design using the PCI - 1713 high speed data acquisition system design.

  18. Design and implementation of data acquisition and monitoring system based on ZigBee%基于ZigBee的数据采集和监控系统的设计与研究

    Institute of Scientific and Technical Information of China (English)

    何军红; 王袁

    2016-01-01

    基于ZigBee设计了智能工业数据采集和监控系统。该系统主要分为3个部分,底层是以TI公司的CC2530芯片为中央处理器,并且具有采集和传输数据功能的无线传感器网络,网络节点又可分为协调器、路由器和终端节点。中间层是由VS软件和C#语言编程实现,具有从底层协调器接收数据并保存到数据库的功能,而且进一步搭建Web服务器。上层则是PC端的人机界面,通过访问Web服务器得到数据库中的数据,并且呈现给用户。该系统将物联网技术应用于工业领域,能够实现对工业现场数据的远距离实时监控,大大解放了劳动力。%This paper designed a data acquisition and monitoring system based on ZigBee. The sys-tem is mainly divided into three parts. The bottom layer is CC2530 chip of Texas Instruments as central processor. It has the function of data acquisition and transmission of wireless sensor networks. The net-work nodes can be divided into three parts, the coordinator, routers and terminal nodes. Interlayer is a-chieved by Visual Studio software and C# programming language. It can receive data from the underlying coordinator and save the data to the database. Besides, we build the Web server in the interlayer. The upper layer is the PC man-machine interface, getting data in the database mentioned before though the Web server , and presented to the users. The system is an application of Internet of things technology in the industrial field, through which we can realize the real-time monitoring of the remote industrial field data. It can greatly liberate the workforce.

  19. 基于TMS320VC5509与AD7322的数据采集系统的设计%Design of a data acquisition system based on TMS320VC5509 and AD7322

    Institute of Scientific and Technical Information of China (English)

    高峰

    2012-01-01

    In order to enhance the signal sampling rate and conversion accuracy and to reduce system power consumption,a kind of dada acquisition system is designed based on the fixed-point DSP TMS320VC5509 and 2-channel,software-selectable,true bipolar input,1MSPS,12-Bit plus sign,successive approximation type ADC,AD7322,and the principle of hardware circuit and the method of connection and acquisition process are introduced.TCD1206SUP linear CCD with 2160 cells is adopted as image sensor,after CCD completes scanning data,the output of video signals will be filtered by a second-order active low pass circuit,these signals will be collected by the high speed serial ADC,AD7322,which will convert them to digital signals and be sent into DSP.The test result indicates that the system scheme designed is reasonable and design purpose and requirement are reached.%为了提高数据采集系统的采样速度、转换精度、降低系统功耗,设计了一种采用TI公司的C5000系列定点DSP芯片TMS320VC5509和ADI Device公司的2通道的、软件可选的、双极性输入的、最高转换速率是1MSpS、12位的带符号的逐次逼近型串行AD7322的数据采集系统,并阐述了该系统的主要硬件电路的搭建原理、连接方法以及采集过程。该系统的前端数据采集单元采用2160像元的TCD1206SUP线阵CCD作为图像传感器,CCD输出的视频信号经过一个二阶有源低通滤波电路进行滤波后,被高速串行A/D转换器AD7322采集并转换成数字信号,然后将数字信号送进DSP。通过测试表明,该系统设计方案合理,达到了设计目的和要求。

  20. Design of Real-time ECG Acquisition System Based on LabVIEW%基于LabVIEW的实时心电信号采集系统的设计

    Institute of Scientific and Technical Information of China (English)

    成清清; 吴蒙

    2013-01-01

    In order to acquire real-time ECG data and reduce costs,design a system of ECG data acquisition based on LabVIEW. The sys-tem is composed of hardware and software. Hardware is made up of signal acquisition and processing circuit and MSP430 microcontroller for AD conversion. The software mainly contains configuring LabVIEW communication module to realize serial communication with MSP430 and uses robust signal processing capabilities of LabVIEW and wavelet transformation to remove noise,multi-resolution decom-posing,and then reconstruct noiseless QRS,detect peak of R wave and finally calculate the heart rate. It also uses LabVIEW friendly user interface for real-time displaying received data to make the data more intuitive and read more easily. The designed system runs stably and achieves good result in the experiment.%  为了实现对心电信号实时监测,且尽可能节约成本,文中设计了一套基于LabVIEW的心电信号采集系统。系统的设计分为硬件和软件两部分:硬件部分主要包括信号采集、信号调理及MSP430单片机的AD转换电路;软件部分主要是通过配置LabVIEW通信模块与单片机实现串口通信,并利用其功能强大的高级信号处理包,借助于小波变换的优势对心电信号进行去噪、多分辨率分解等处理,最后重建无噪的QRS波,并检测R波峰值,从而计算心率。文中还利用LabVIEW友好的用户界面对接收的数据及处理过程进行实时波形显示,使数据更直观、读取更方便。本系统在实验的过程中,运行较稳定,取得了良好的结果。

  1. A low cost concept for data acquisition systems applied to decentralized renewable energy plants.

    Science.gov (United States)

    Jucá, Sandro C S; Carvalho, Paulo C M; Brito, Fábio T

    2011-01-01

    The present paper describes experiences of the use of monitoring and data acquisition systems (DAS) and proposes a new concept of a low cost DAS applied to decentralized renewable energy (RE) plants with an USB interface. The use of such systems contributes to disseminate these plants, recognizing in real time local energy resources, monitoring energy conversion efficiency and sending information concerning failures. These aspects are important, mainly for developing countries, where decentralized power plants based on renewable sources are in some cases the best option for supplying electricity to rural areas. Nevertheless, the cost of commercial DAS is still a barrier for a greater dissemination of such systems in developing countries. The proposed USB based DAS presents a new dual clock operation philosophy, in which the acquisition system contains two clock sources for parallel information processing from different communication protocols. To ensure the low cost of the DAS and to promote the dissemination of this technology in developing countries, the proposed data acquisition firmware and the software for USB microcontrollers programming is a free and open source software, executable in the Linux and Windows® operating systems.

  2. Hybrid control and data acquisition system for geographically distributed sensors for environmental monitoring

    Science.gov (United States)

    Garufi, Fabio; Acernese, Fausto; Boiano, Alfonso; De Rosa, Rosario; Romano, Rocco; Barone, Fabrizio

    2007-10-01

    In this paper we describe the architecture and the performances of a hybrid modular acquisition and control system prototype for environmental monitoring and geophysics. The system, an improvement of a VME-UDP/IP based system we developed for interferometric detectors of gravitational waves, is based on a dual-channel 18-bit low noise ADC, a 16-bit DAC module at 1MHz, and a 20-bit slower ADC necessary for the acquisition of an external calibration signal. The module can be configured as stand-alone or mounted on a motherboard as mezzanine in parallel with other modules. Both the modules and the motherboard can send/receive the configuration and the acquired/correction data for control through a standard EPP parallel port to a standard PC, where the real-time computation is performed. Experimental tests have demonstrated that the distributed control systems implemented with this architecture exihibit a delay time of less than 25 μs on a single channel, that is a sustained sampling frequency of more than 40kHz. The system is now under extensive test in two different experiments: the remote control and data acquisition of a set of seismometers, velocimeters and accelerometers to simulate a geophysics networks of sensors and the remote control of the end mirrors of a suspended Michelson interferometer through electrostatic actuators for interferometric detectors of gravitational waves.

  3. A Low Cost Concept for Data Acquisition Systems Applied to Decentralized Renewable Energy Plants

    Directory of Open Access Journals (Sweden)

    Fábio T. Brito

    2011-01-01

    Full Text Available The present paper describes experiences of the use of monitoring and data acquisition systems (DAS and proposes a new concept of a low cost DAS applied to decentralized renewable energy (RE plants with an USB interface. The use of such systems contributes to disseminate these plants, recognizing in real time local energy resources, monitoring energy conversion efficiency and sending information concerning failures. These aspects are important, mainly for developing countries, where decentralized power plants based on renewable sources are in some cases the best option for supplying electricity to rural areas. Nevertheless, the cost of commercial DAS is still a barrier for a greater dissemination of such systems in developing countries. The proposed USB based DAS presents a new dual clock operation philosophy, in which the acquisition system contains two clock sources for parallel information processing from different communication protocols. To ensure the low cost of the DAS and to promote the dissemination of this technology in developing countries, the proposed data acquisition firmware and the software for USB microcontrollers programming is a free and open source software, executable in the Linux and Windows® operating systems.

  4. 基于LabVIEW的切削力采集和建模系统%The Acquisition and Modeling System of Cutting Force Based on LabVIEW

    Institute of Scientific and Technical Information of China (English)

    陈雪华; 岳文辉

    2012-01-01

    With back cutting depth,spindle speed,feeding and cutting width as design variables,and cutting force as response,a second-order mathematical model of cutting force is built using the response surface method of statistics.The hardware test system of cutting experiment for 45 steel is built.The response surface method is incorporated in LabVIEW 8.6 programming to design the software system.By inputting the number of impact factor and the factor value scope,the software system can automatically generate a center combination experimental design scheme and it can collect,calculate and analyze the experimental data,and,finally build the response surface model.%应用统计学中的响应面方法,以背吃刀量,主轴转速,进给量和切削宽度为设计变量,切削力为响应,建立切削力的二阶数学模型。以45钢铣削试验为例搭建硬件测试系统。将响应面方法融入到LabVIEW8.6编程之中,设计软件系统。该系统功能丰富,输入影响因子的个数,给定因子的取值范围,就能自动生成中心组合设计试验方案,并对试验数据进行采集、计算和分析,得到切削力响应面模型。

  5. Research on intelligent vehicles based on servo information acquisition system%基于随动式信息采集系统的智能车研究

    Institute of Scientific and Technical Information of China (English)

    李登峰; 宋广发; 赵彩霞

    2011-01-01

    为改善固定前瞻式信息采集系统模型车赛道检测范围有限、检测精度较低的缺点,提高智能模型车的行驶速度和稳定性,提出了基于随动式激光传感器采集系统的智能模型车设计及控制算法,通过将模型车的信息采集前瞻板安装在可以旋转的平台上,采用比例微分算法控制旋转平台,最终根据前瞻板的转动角度可以精确计算出赛道位置.测试结果表明,随动激光前瞻与固定前瞻相比增加了横向检测范围,提高了检测精度,减小了高速行驶状态下丢失赛道信息的概率,使转向控制更为平滑、精确.使用随动式激光前瞻系统使模型车平均行驶速度提高了0.6m/s.%To deal with the problem of the low detection accuracy and the small detection range of intelligent vehicles with the fixed detection system, a servo detection system with laser sensors and a new control strategy are proposed. In the design of the system, the detection system is fixed on a servo platform, and finally the track information can be calculated by the angle between the platform and the body. Moreover, the PD strategy is adopted to control the servo platform. Our result shows that the detection range is extended, the detection accuracy is improved, and the possibility of losing the track information is reduced in the high speed mode. Besides, the average speed is increase by 0.6m/s with continuous and smooth steering.

  6. Book Acquisition System Based on Mobile Agent%基于移动代理的图书采访系统

    Institute of Scientific and Technical Information of China (English)

    胡朝明; 黄志强

    2010-01-01

    结合图书采访工作需要,介绍移动代理系统的基本功能和使用扩展的MaSE(Multiagent System Engineering)软件开发方法,探讨基于移动代理的图书采访系统的功能需求,设计出系统框架结构,并就系统实现的关键技术问题进行分析和论述.

  7. Quadrature Signal Acquisition System of Encoder Based on LPC2103%基于LPC2103的编码器正交信号采集系统

    Institute of Scientific and Technical Information of China (English)

    吕慧; 朱翚; 黄鹏举; 徐丽莉

    2012-01-01

    We adopt LPC2103 as main CPU of the system to collect the signals of incremental rotary encoder and achieve pulse counting and distinguishing direction.Via RS232 communication,we achieve reverse counting and other fuctions.%以LPC2103为控制芯片,对增量型旋转编码器信号进行采集,完成计数和辨向功能,并且通过RS232与上位机通信,通过上位机完成计数器反向计数及其他功能。

  8. An automated data acquisition system for isolated tissue studies.

    Science.gov (United States)

    Gross, D M; Weitz, D

    1982-09-01

    The automation of an isolated atria assay is described. Data acquisition, operation of the strip chart recorder, data reduction and manipulation and generation of notebook pages showing final EC50's, dose-ratios and local pA2's has been completely automated. The data are acquired via a SYM-1 (6502 CPU) 8-bit single board computer running an assembly language program stored on an EPROM chip. The data from a physiological recorder system are stored by the SYM-1 and, at the conclusion of the experiment, transmitted to a DEC MINC-11 microminicomputer running a sequence of programs in BASIC for the mathematical manipulation of the data and the automatic generation of lab notebook pages. The automated system totally eliminates hand transcription of data, manual plotting of curves and mathematical errors.

  9. 基于TMS320DM6437的掌静脉图像采集系统设计%Design based on TMS320DM6437 palm vein image acquisition system

    Institute of Scientific and Technical Information of China (English)

    苑玮琦; 卢守波

    2015-01-01

    The design and implementation of a TMS320DM6437 to DSP as the core of the palm vein image acquisition system. This system adopts the wavelength of 470nm blue light and wavelength of 850nm near infrared light as the main light source and light source system by contactless palm hand imageacquisition mode, after the hand image acquisition, feature extraction ofinformation for the hand, and then combine the feature recognitionalgorithm for identification. Video processing subsystem of the system mainly consists of CMOS sensor, the TMS320DM6437 (VPSS) and display.Experimental results show that the image acquisition to the system clear,good system stability, fast acquisition speed, meet the requirement ofsystem design.%设计并实现了一种以TMS320DM6437 DSP为核心的掌静脉图像采集系统. 本系统采用了波长为470 nm蓝光和波长为850 nm近红外光作为主要光源,通过手掌和光源系统非接触的方式采集手部图像,采集完手部图像后,提取手部的特征信息,然后结合特征识别算法进行身份识别.该系统主要包括CMOS传感器、TMS320DM6437的视频处理子系统(VPSS)和显示器. 实验结果表明:该系统采集到的图像清晰、系统稳定性好、采集速度快,满足了系统的设计要求.

  10. Hybrid control and acquisition system for remote control systems for environmental monitoring

    Science.gov (United States)

    Garufi, Fabio; Acernese, Fausto; Boiano, Alfonso; De Rosa, Rosario; Romano, Rocco; Barone, Fabrizio

    2008-10-01

    In this paper we describe the architecture and the performances of a hybrid modular acquisition and control system prototype for environmental monitoring and geophysics. The system, an alternative to a VME-UDP/IP based system, is based on a dual-channel 18-bit low noise ADC and a 16-bit DAC module at 1 MHz. The module can be configured as stand-alone or mounted on a motherboard as mezzanine. Both the modules and the motherboard can send/receive the configuration and the acquired/correction data for control through a standard EPP parallel port to a standard PC for the real-time computation. The tests have demonstrated that a distributed control systems based on this architecture exhibits a delay time of less than 25 us on a single channel, i.e a sustained sampling frequency of more than 40 kHz (and up to 80 kHz). The system is now under extensive test in the remote controls of seismic sensors (to simulate a geophysics networks of sensors) of a large baseline suspended Michelson interferometer.

  11. Collection and evaluation of salt mixing data with the real time data acquisition system. [LMFBR

    Energy Technology Data Exchange (ETDEWEB)

    Glazer, S.; Chiu, C.; Todreas, N.E.

    1977-09-01

    A minicomputer based real time data acquisition system was designed and built to facilitate data collection during salt mixing tests in mock ups of LMFBR rod bundles. The system represents an expansion of data collection capabilities over previous equipment. It performs steady state and transient monitoring and recording of up to 512 individual electrical resistance probes. Extensive real time software was written to govern all phases of the data collection procedure, including probe definition, probe calibration, salt mixing test data acquisition and storage, and data editing. Offline software was also written to permit data examination and reduction to dimensionless salt concentration maps. Finally, the computer program SUPERENERGY was modified to permit rapid extraction of parameters from dimensionless salt concentration maps. The document describes the computer system, and includes circuit diagrams of all custom built components. It also includes descriptions and listings of all software written, as well as extensive user instructions.

  12. Knowledge acquisition and rapid protyping of an expert system: Dealing with real world problems

    Science.gov (United States)

    Bailey, Patrick A.; Doehr, Brett B.

    1988-01-01

    The knowledge engineering and rapid prototyping phases of an expert system that does fault handling for a Solid Amine, Water Desorbed CO2 removal assembly for the Environmental Control and Life Support System for space based platforms are addressed. The knowledge acquisition phase for this project was interesting because it could not follow the textbook examples. As a result of this, a variety of methods were used during the knowledge acquisition task. The use of rapid prototyping and the need for a flexible prototype suggested certain types of knowledge representation. By combining various techniques, a representative subset of faults and a method for handling those faults was achieved. The experiences should prove useful for developing future fault handling expert systems under similar constraints.

  13. Data Processing and Acquisition System for the HT-7 Multipulse Thomson Scattering Diagnostic

    Institute of Scientific and Technical Information of China (English)

    陈卓天; 赵君煜; 方自深; 李亚东; 杨利

    2003-01-01

    This article describes the data processing and acquisition system for the HT-7 mul-tipulse Thomson scattering diagnostic. An eight-pulse laser is used in the Thomson scatteringsystem to obtain electron temperature profiles at eight different times throughout an entire plasmadischarge. The major components of the diagnostic system consist of a multipulse Nd-glass laser,system. The data processing software along with LeCroy 2250L will perform the data acquisition.In order to simplify the operation and extend the capability of its compatibility with other mathsoftwares, the processing software has been improved by the authors. The new software based onthe VC++ easily utilizes some math softwares to calculate the electron temperature. The newsoftware is simpler and more operational than the old one.

  14. Fourth Data Challenge for the ALICE data acquisition system

    CERN Multimedia

    Maximilien Brice

    2003-01-01

    The ALICE experiment will study quark-gluon plasma using beams of heavy ions, such as those of lead. The particles in the beams will collide thousands of times per second in the detector and each collision will generate an event containing thousands of charged particles. Every second, the characteristics of tens of thousands of particles will have to be recorded. Thus, to be effective, the data acquisition system (DAQ) must meet extremely strict performance criteria. To this end, the ALICE Data Challenges entail step-by-step testing of the DAQ with existing equipment that is sufficiently close to the final equipment to provide a reliable indication of performance. During the fourth challenge, in 2002, a data acquisition rate of 1800 megabytes per second was achieved by using some thirty parallel-linked PCs running the specially developed DATE software. During the final week of tests in December 2002, the team also tested the Storage Tek linear magnetic tape drives. Their bandwidth is 30 megabytes per second a...

  15. MRI-based motion correction of thoracic PET: initial comparison of acquisition protocols and correction strategies suitable for simultaneous PET/MRI systems

    Energy Technology Data Exchange (ETDEWEB)

    Dikaios, Nikolaos; Fryer, Tim D. [University of Cambridge, Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, Cambridge (United Kingdom); Izquierdo-Garcia, David; Mani, Venkatesh; Fayad, Zahi A. [Mount Sinai School of Medicine, Imaging Science Laboratories, Translational and Molecular Imaging Institute, Department of Radiology, New York, NY (United States); Graves, Martin J. [University of Cambridge, Department of Radiology, Cambridge (United Kingdom)

    2012-02-15

    Magnetic resonance imaging (MRI) acquired on equipment capable of simultaneous MRI and positron emission tomography (PET) could potentially provide the gold standard method for motion correction of PET. To assess the latter, in this study we compared fast 2D and 3D MRI of the torso and used deformation parameters from real MRI data to correct simulated PET data for respiratory motion. PET sinogram data were simulated using SimSET from a 4D pseudo-PET image series created by segmenting MR images acquired over a respiratory cycle. Motion-corrected PET images were produced using post-reconstruction registration (PRR) and motion-compensated image reconstruction (MCIR). MRI-based motion correction improved PET image quality at the lung-liver and lung-spleen boundaries and in the heart but little improvement was obtained where MRI contrast was low. The root mean square error in SUV units per voxel compared to a motion-free image was reduced from 0.0271 (no motion correction) to 0.0264 (PRR) and 0.0250 (MCIR). Motion correction using MRI can improve thoracic PET images but there are limitations due to the quality of fast MRI. (orig.)

  16. 基于FPGA的GPS信息采集与显示系统设计与实现%Design and Implementation of GPS Information Acquisition and Display System Based on FPGA

    Institute of Scientific and Technical Information of China (English)

    刘玉民; 张雨虹; 姚明林

    2011-01-01

    The paper proposes a new approach for the acquisition and display of GPS information based on K8051 MCU IP core embedded in FPGA,introduces the system hardware composition, explains the design procedures of Quartus Ⅱ logic diagram file and assembler desing program in detail and finally makes a hardware experiment using GPS module, FPGA experiment board and LCD. Experiment results proves its effectiveness.%提出了一种基于FPGA技术的K8051单片机IP核采集与显示GPS信息的新方法。介绍了系统的硬件组成,详细说明了QuartusⅡ原理图文件的设计方法和汇编程序设计流程图,并利用GPS模块、FPGA实验开发板和液晶显示器进行了硬件实验,结果证明了该方法的有效性。

  17. Principle of Coordinates Acquisition Based on Single Camera

    Institute of Scientific and Technical Information of China (English)

    HUANG Guiping; YE Shenghua

    2005-01-01

    The principle and accuracy of 3-D coordinates acquisition using one single camera and the Aided Measuring Probe(AMP) are discussed in this paper. Using one single camera and one AMP which has several embedded targets and one tip with known coordinates, the single camera's orientation and location can be calculated. After orientation, the global coordinate system is obtained. During measurement, the camera is fixed firstly, then the AMP is held and the feature point is touched.The camera is triggered lastly. The position and orientation of the AMP are therefore calculated from the size and position of its image on the sensor. Since the tip point of AMP has known relation with the embedded targets, the feature point can be measured. Tests show that the accuracy of length measurement is 0.2 mm and accuracy for flatness measurement in XSY-plane is 0.1 mm.

  18. Sentence Topics Based Knowledge Acquisition for Question Answering

    Science.gov (United States)

    Oh, Hyo-Jung; Yun, Bo-Hyun

    This paper presents a knowledge acquisition method using sentence topics for question answering. We define templates for information extraction by the Korean concept network semi-automatically. Moreover, we propose the two-phase information extraction model by the hybrid machine learning such as maximum entropy and conditional random fields. In our experiments, we examined the role of sentence topics in the template-filling task for information extraction. Our experimental result shows the improvement of 18% in F-score and 434% in training speed over the plain CRF-based method for the extraction task. In addition, our result shows the improvement of 8% in F-score for the subsequent QA task.

  19. Research of aerial imaging spectrometer data acquisition technology based on USB 3.0

    Science.gov (United States)

    Huang, Junze; Wang, Yueming; He, Daogang; Yu, Yanan

    2016-11-01

    With the emergence of UAV (unmanned aerial vehicle) platform for aerial imaging spectrometer, research of aerial imaging spectrometer DAS(data acquisition system) faces new challenges. Due to the limitation of platform and other factors, the aerial imaging spectrometer DAS requires small-light, low-cost and universal. Traditional aerial imaging spectrometer DAS system is expensive, bulky, non-universal and unsupported plug-and-play based on PCIe. So that has been unable to meet promotion and application of the aerial imaging spectrometer. In order to solve these problems, the new data acquisition scheme bases on USB3.0 interface.USB3.0 can provide guarantee of small-light, low-cost and universal relying on the forward-looking technology advantage. USB3.0 transmission theory is up to 5Gbps.And the GPIF programming interface achieves 3.2Gbps of the effective theoretical data bandwidth.USB3.0 can fully meet the needs of the aerial imaging spectrometer data transmission rate. The scheme uses the slave FIFO asynchronous data transmission mode between FPGA and USB3014 interface chip. Firstly system collects spectral data from TLK2711 of high-speed serial interface chip. Then FPGA receives data in DDR2 cache after ping-pong data processing. Finally USB3014 interface chip transmits data via automatic-dma approach and uploads to PC by USB3.0 cable. During the manufacture of aerial imaging spectrometer, the DAS can achieve image acquisition, transmission, storage and display. All functions can provide the necessary test detection for aerial imaging spectrometer. The test shows that system performs stable and no data lose. Average transmission speed and storage speed of writing SSD can stabilize at 1.28Gbps. Consequently ,this data acquisition system can meet application requirements for aerial imaging spectrometer.

  20. 基于移动网络及短距离通讯技术的电表数据采集系统%Based on Mobile Network and Short Distance Communication Technology of the Electric Meter Data Acquisition System

    Institute of Scientific and Technical Information of China (English)

    张勇波

    2013-01-01

    This paper introduces the electric meter data acquisition system.Through the industrial field remote meter reading con-centrator,the short distance wireless communication technology and GPRS wireless network communication technology together,it successful applied to electric power data remote meter reading and realized the power of real-time data acquisition and transmission.Finally,the system software design is introduced.%介绍了电表数据采集系统,它通过工业现场远程抄表集中器,将短距离无线通讯技术和GPRS无线网络通讯技术结合在一起,成功的运用到电力数据远程抄表上,实现了电力数据的实时采集与传输,最后对系统后台软件的设计进行了介绍.

  1. 基于电力载波技术的水下生产数据采集系统%Subsea Production Data Acquisition System Based on Power Line Carir er Technology

    Institute of Scientific and Technical Information of China (English)

    陈浩; 程武山; 刘义勇; 张鹏举

    2015-01-01

    针对深水生产系统的工作特点,采用基于脐带缆的电力线载波通信传输技术,不仅解决水上与水下的长距离数据传输问题,同时降低海底布线的复杂度与生产成本。文中利用Mi200e载波芯片,采用QPSK扩频调相调制方式,设计了水下生产系统数据采集硬件模块。实验测试表明,该模块能够高效稳定地采集采油树管汇上的各路传感信号与反馈数据,保证水下控制系统的稳定工作。%According to the characteristics of subsea production systems , using the umbilical cable communication transmis-sion technology based on power line carrier , the problems of long distance data transmission between on and under water were solved, and wiring complexity and the cost of production were reduced .In this paper, the Mi200e carrier chip and modulation mode of the QPSK were adopted .The data acquisition hardware module of subsea production system was designed .As tested by ex-periments, the module can acquire highly efficient and stable sensing signal and feedback data on each manifold of tree , so as to ensure the stable work of subsea control system .

  2. Dopamine systems adaptation during acquisition and consolidation of a skill

    Directory of Open Access Journals (Sweden)

    Wolfgang H Sommer

    2014-11-01

    Full Text Available The striatum plays a key role in motor learning. Striatal function depends strongly on dopaminergic neurotransmission, but little is known about neuroadaptions of the dopamine system during striatal learning. Using an established task that allows differentiation between acquisition and consolidation of motor learning, we here investigate D1 and D2-like receptor binding and transcriptional levels after initial and long-term training of mice. We found profound reduction in D1 binding within the dorsomedial striatum (DMS after the first training session on the accelerated rotarod and a progressive reduction in D2-like binding within the dorsolateral striatum (DLS after extended training. Given that similar phase- and region-specific striatal neuroadaptations have been found also during learning of complex procedural tasks including habit formation and automatic responding, the here observed neurochemical alterations are important for our understanding of neuropsychiatric disorders that show a dysbalance in the function of striatal circuits, such as in addictive behaviours.

  3. Strategic Planning and Management in Defense Systems Acquisition

    Science.gov (United States)

    2014-04-30

    somewhere in the middle on the usefulness reports, included scenario planning, Balanced Scorecard , use of process consultants, and use of industry...Program analysis/assessment  Needs assessment  Mission/strategy mapping  SWOT analyses  Root cause analyses  Balanced Scorecard  Stakeholder...bäÉîÉåíÜ=^ååì~ä=^Åèìáëáíáçå= oÉëÉ~êÅÜ=póãéçëáìã= qÜìêëÇ~ó=pÉëëáçåë= sçäìãÉ=ff= = Strategic Planning and Management in Defense Systems Acquisition

  4. Data Acquisition System for the SND2000 Experiment

    Institute of Scientific and Technical Information of China (English)

    M.N.Achasov; A.G.Bogdanchikov; 等

    2001-01-01

    SND is a spherical non-magnetic detector,which operated since 1996 at VEPP-2M electron-positron collider in Novosibirsk.Now VEPP-2M collider is dismantled to be replaced by a new VEPP-2000 machine with higher energy and luminosity.The SND detector is also performing upgrade of its subsystems including electronics,and software,Expected substantial growth of events dataflow requires radical changes in the Data Acquisition (DAQ) system software.This paper describes the SND2000 software architecrure and its principal components.First the main events flow processuing components are considered-the readout process and the L3-trigger farm.After processing by L3 the events flow is either logged to tape or fed to calibration and slow control process.Using auxiliary control and service software components,which are also described.performs the management of these activities.

  5. Integration of the Trigger and Data Acquisition Systems in ATLAS

    Energy Technology Data Exchange (ETDEWEB)

    Abolins, M.; /Michigan State U.; Adragna, P.; /Queen Mary, U. of London; Aleksandrov, E.; /Dubna, JINR; Aleksandrov, I.; /Dubna, JINR; Amorim, A.; /Lisbon, LIFEP; Anderson, K.; /Chicago U., EFI; Anduaga, X.; /La Plata U.; Aracena, I.; /SLAC; Asquith, L.; /University Coll. London; Avolio, G.; /CERN; Backlund, S.; /CERN; Badescu, E.; /Bucharest, IFIN-HH; Baines, J.; /Rutherford; Barria, P.; /Rome U. /INFN, Rome; Bartoldus, R.; /SLAC; Batreanu, S.; /Bucharest, IFIN-HH /CERN; Beck, H.P.; /Bern U.; Bee, C.; /Marseille, CPPM; Bell, P.; /Manchester U.; Bell, W.H.; /Glasgow U.; Bellomo, M.; /Pavia U. /INFN, Pavia /Regina U. /CERN /Annecy, LAPP /Paris, IN2P3 /Royal Holloway, U. of London /Napoli Seconda U. /INFN, Naples /Argonne /CERN /UC, Irvine /Barcelona, Autonoma U. /CERN /Montreal U. /CERN /Glasgow U. /Michigan State U. /Bucharest, IFIN-HH /Napoli Seconda U. /INFN, Naples /New York U. /Barcelona, Autonoma U. /Salento U. /INFN, Lecce /Pisa U. /INFN, Pisa /Bucharest, IFIN-HH /UC, Irvine /CERN /Glasgow U. /Genoa U. /INFN, Genoa /Lisbon, LIFEP /Napoli Seconda U. /INFN, Naples /UC, Irvine /Valencia U. /Rio de Janeiro Federal U. /University Coll. London /New York U. /University Coll. London; /more authors..

    2011-11-09

    During 2006 and the first half of 2007, the installation, integration and commissioning of trigger and data acquisition (TDAQ) equipment in the ATLAS experimental area have progressed. There have been a series of technical runs using the final components of the system already installed in the experimental area. Various tests have been run including ones where level 1 preselected simulated proton-proton events have been processed in a loop mode through the trigger and dataflow chains. The system included the readout buffers containing the events, event building, level 2 and event filter trigger algorithms. The scalability of the system with respect to the number of event building nodes used has been studied and quantities critical for the final system, such as trigger rates and event processing times, have been measured using different trigger algorithms as well as different TDAQ components. This paper presents the TDAQ architecture, the current status of the installation and commissioning and highlights the main test results that validate the system.

  6. The new data acquisition system of the HADES experiment

    Energy Technology Data Exchange (ETDEWEB)

    Palka, Marek [Jagiellonian University, Cracow (Poland); Gesellschaft fuer Schwerionenforschung, Darmstadt (Germany)

    2008-07-01

    The main goal of the HADES DAQ upgrade project is to achieve a primary data acquisition rate of 20 kHz also for events with maximum charged particle multiplicity (i.e Au+Au collisions). We favor a modular design to increase the scope of applications (e.g. to integrate new detector systems) and simplify the debugging. A first version (TRBv1) of a system fullfiling the above requirements was recently used during the production runs to read out four detector subsystems. However, in order to work at the highest rates and provide fast pre-processing for the different trigger levels, an improved board was necessary (TRBv2). Such a board has been built, featuring a fast optical link (2.5Gb/s), Tiger-Shark DSP (600 MHz), 2 Gb SDRAM and ETRAX-FS multiprocessor. In this talk, the real-world performance of this upgraded TRB is presented. To this board customized Add-On boards are plugged providing the connectivity and functionality necessary to interface the different detector systems used in HADES. Following the same concept, an optical Hub with 16 transceivers (32 Gb/s) and the central Trigger system have been implemented as Add-On boards. We present the current status of all these different components and describe how they interact in a complete system.

  7. Study on the new model of CCCelectricity information acquisition system based on%基于用电信息采集系统的抄核收新模式研究

    Institute of Scientific and Technical Information of China (English)

    李君

    2016-01-01

    随着电力系统信息化要求的不断提高,用电信息采集应用也逐渐深化,替代了传统的抄核收模式,促使电力营销抄核收工作逐步向信息化、自动化、互动化方式转变.本文针对传统抄核收模式的弊端和用电信息采集模式的优势引出了抄核收模式向信息化采集系统发展的必然趋势,并对用电信息采集系统下的抄核收管理新模式进行了阐述.%With continuous improvement of power information system requirements,electricity information collection and application,gradually deepening,instead of the traditional mode of copy the resumption of nuclear,prompting power marketing copy the resumption of nuclear work gradually to the information tec hnology,automation,interactive mode.The according to the drawbacks of the traditional mode of copy the resumption of nuclear and the advantages of electric energy data acquisition mode leads to copy the resumption of nuclear model to the information acquisition system development inevitable trend,and the electric energy data acquisition system copy and acceptance check management new model are described.

  8. Low-power analog integrated circuits for wireless ECG acquisition systems.

    Science.gov (United States)

    Tsai, Tsung-Heng; Hong, Jia-Hua; Wang, Liang-Hung; Lee, Shuenn-Yuh

    2012-09-01

    This paper presents low-power analog ICs for wireless ECG acquisition systems. Considering the power-efficient communication in the body sensor network, the required low-power analog ICs are developed for a healthcare system through miniaturization and system integration. To acquire the ECG signal, a low-power analog front-end system, including an ECG signal acquisition board, an on-chip low-pass filter, and an on-chip successive-approximation analog-to-digital converter for portable ECG detection devices is presented. A quadrature CMOS voltage-controlled oscillator and a 2.4 GHz direct-conversion transmitter with a power amplifier and upconversion mixer are also developed to transmit the ECG signal through wireless communication. In the receiver, a 2.4 GHz fully integrated CMOS RF front end with a low-noise amplifier, differential power splitter, and quadrature mixer based on current-reused folded architecture is proposed. The circuits have been implemented to meet the specifications of the IEEE 802.15.4 2.4 GHz standard. The low-power ICs of the wireless ECG acquisition systems have been fabricated using a 0.18 μm Taiwan Semiconductor Manufacturing Company (TSMC) CMOS standard process. The measured results on the human body reveal that ECG signals can be acquired effectively by the proposed low-power analog front-end ICs.

  9. Asphalt pavement surface 3D data acquisition system based on line-structure light%基于线结构光的沥青路面三维数据采集系统

    Institute of Scientific and Technical Information of China (English)

    孙朝云; 呼延菊; 李伟; 魏子尧; 刘祝

    2016-01-01

    To solve the problem of poor real-time,low accuracy of current asphalt pavement surface 3D data acquisition system,which can not provide 3D pavement data comprehensively,this paper studied an asphalt pavement 3D data acquisition system based on line-structure light.The system was a three-dimensional equipment with optical and electrical integration and automation,which was designed for domestic road three-dimensional information detection.It could realize data collection,analysis,processing,3D display for asphalt pavement surface topography.The system used infrared laser light source,planar array CCD camera and digital image detection technology.This system computed the 3D depth information based on laser triangulation algorithm,finished 3D reconstruction of road surface morphology by use of MATLAB software to obtain 3D display after reconstruction,and did quantitative analysis of detection results.Based on modular design,this system mainly consisted of power supply module,salve computer control module,counting trigger module,laser triangulation detection module,GPS module and data processing module.The 3D data of asphalt pavement were obtained through testing software's driving hardware modules.The results show that modular design improves anti-interference,making the system structure simple and clear,and relieve from the complex wires.It is convenient for debugging,maintenance,shorten development cycle,and the cost for development and maintenance is also reduced.The results also show that the system can not only meet the requirements of asphalt pavement 3D data acquisition and the requirements of real-time detection,but also provide vivid and visualized 3D visual topography.17 figs,21 refs.%针对目前沥青路面表面形貌三维数据采集实时性差、精确度低,难以准确全面地提供路面三维构造形态的问题,研究了基于线结构光的沥青路面表面形貌三维数据采集系统.该系统是针对中国道路三维信息检测要求

  10. 77 FR 39125 - Defense Acquisition Regulations System; Defense Federal Acquisition Regulation Supplement; Only...

    Science.gov (United States)

    2012-06-29

    ... one offer is received. This rule implements a DoD Better Buying Power initiative. The revisions to... the simplified acquisition threshold. Response: The intent of the DoD Better Buying Power initiative... level above the contracting officer. DoD has not seen evidence of abuse of this waiver...

  11. Research on a High-Precision Delay Circuit in Data Acquisition Systems

    Institute of Scientific and Technical Information of China (English)

    MA Kai; SU Hong-qi; YANG Gong-xun

    2006-01-01

    This paper presents a novel precision delay circuit design for high-speed data acquisition systems. Many studies have suggested that various advanced electronic measurement apparatuses require that the delay circuit should have a high precision and a short delay interval. Practically, however, such measurement apparatuses are low in precision and long in delay interval at present. The structure and function of a data acquisition system is introduced first; then the principle of ramp-based precision delay circuits and the digitally programmable delay generator is studied and the precision delay circuit is designed. The authors also demonstrated 8-bit programmable delay circuits with a timing precision of 10 ps. Therefore the programmable precision delay circuit here presented has a higher precision, shorter interval and more detectable function than any other precision delay circuit.

  12. A high speed data acquisition and processing system for real time data analysis and control

    Science.gov (United States)

    Ferron, J. R.

    1992-11-01

    A high speed data acquisition system which is closely coupled with a high speed digital processor is described. Data acquisition at a rate of 40 million 14 bit data values per second is possible simultaneously with data processing at a rate of 80 million floating point operations per second. This is achieved by coupling a commercially available VME format single board computer based on the Intel i860 microprocessor with a custom designed first-in, first-out memory circuit that transfers data at high speed to the processor board memory. Parallel processing to achieve increased computation speed is easily implemented because the data can be transferred simultaneously to multiple processor boards. Possible applications include high speed process control and real time data reduction. A specific example is described in which this hardware is used to implement a feedback control system for 18 parameters which uses 100 input signals and achieves a 100 μs cycle time.

  13. FEREAD: Front End Readout software for the Fermilab PAN-DA data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    Dorries, T.; Haire, M.; Moore, C.; Pordes, R.; Votava, M.

    1989-05-01

    The FEREAD system provides a multi-tasking framework for controlling the execution of experiment specific front end readout processes. It supports initializing the front end data acquisition hardware, queueing and processing readout activation signals, cleaning up at the end of data acquisition, and transferring configuration parameters and statistical data between a ''Host'' computer and the readout processes. FEREAD is implemented as part of the PAN-DA software system and is designed to run on any Motorola 68k based processor board. It has been ported to the FASTBUS General Purpose Master (GPM) interface board and the VME MVME133A processor board using the pSOS/Microtec environment. 12 refs., 2 figs.

  14. Integration of VICbus, FDL, SCI and Ethernet in the CERN CASCADE data acquisition system

    CERN Document Server

    Petersen, J; Bogaerts, A; Burckhart, Doris; Divià, R; Ingebritsen, L; Joos, M; Liebhart, M; Niewold, J; Parkman, C; Perrin, Yves; Thiercelin, B; Tremblet, L J; Vascotto, Alessandro; Werner, P

    1995-01-01

    Cascade is a multi-processor real-time data-acquisition system for HEP experiments developed at CERN by the ECP-DS group. Configurations supported today include VMEbus processors running OS-9 and UNIX workstations. The CASCADE data acquisition processes, called stages communicate via links, at present VICbus between VME crates and Ethernet between VMEbus processors and workstations. Work is in progress to introduce new inter-stage links based on the Fast Data Link between VME crates and on SCI for data exchange between SUN stations. The paper gives a short description of the architecture of CASCADE with emphasis on the link aspects. The implementation and current status of the inter-stage links based on VICbus, Ethernet, FDI, and SCI will be described and results on the performances presented.

  15. The H.E.S.S. data acquisition system

    CERN Document Server

    Balzer, A; Gajdus, M; Göring, D; Lopatin, A; Murach, T; de Naurois, M; Schlenker, S; Schwanke, U; Stegmann, C; Wagner, P

    2014-01-01

    The High Energy Stereoscopic System (H.E.S.S.) is an array of five Imaging Atmospheric Cherenkov Telescopes located in the Khomas Highland in Namibia. It measures cosmic gamma-rays with very high energies (> 100 GeV) using the Earth's atmosphere as a calorimeter. The H.E.S.S. experiment has entered Phase II in September 2012 with the inauguration of a fifth telescope that is larger and more complex than the other four. The very large mirror area of 600 m(2) in comparison to the 100 m(2) of the smaller telescopes results in a lower energy threshold as well as an increased overall sensitivity of the system. Moreover, the huge effective area, due to the large mirror size, is crucial in the detection of short time scale low energy transient events. This paper will give a brief overview of the design principles of the current H.E.S.S. data acquisition and array control system. Particular emphasis is given to the new Target of Opportunity alert system that has recently been introduced to the array and allows the in...

  16. Design and implementation of a data acquisition system for the study of dynamics signals in the time Domain

    Energy Technology Data Exchange (ETDEWEB)

    Daza, Arnoldo; Hinojosa, Ana; Diaz, Xavier; Neira, Oscar, E-mail: gelunicesar@gmail.com [Laser Spectroscopy Group, Room 204 Block I, Universidad Popular del Cesar, Valledupar - Cesar (Colombia)

    2011-01-01

    The purpose of this research was to design and implement a data acquisition system for the study of dynamic signals in the time in order of nanoseconds, through the use of electronic instrumentation to obtain the temporal profiles of light signals, such as pulses of light from a laser or fluorescent light signals. To carry out the design and implementation of the data acquisition system proposed, we used a rapid response transducer and a data acquisition card of high speed. As well, it was developed a graphical user interface for visualization, analysis and study of the data acquired. Thus, it was possible to perform the digitization of a pulse on the order of nanoseconds, as well as the acquisition of fluorescence signals of different wavelengths, from which to obtain theoretical and experimental valuable knowledge based on the physics of spectroscopy.

  17. LabVIEW: a software system for data acquisition, data analysis, and instrument control.

    Science.gov (United States)

    Kalkman, C J

    1995-01-01

    Computer-based data acquisition systems play an important role in clinical monitoring and in the development of new monitoring tools. LabVIEW (National Instruments, Austin, TX) is a data acquisition and programming environment that allows flexible acquisition and processing of analog and digital data. The main feature that distinguishes LabVIEW from other data acquisition programs is its highly modular graphical programming language, "G," and a large library of mathematical and statistical functions. The advantage of graphical programming is that the code is flexible, reusable, and self-documenting. Subroutines can be saved in a library and reused without modification in other programs. This dramatically reduces development time and enables researchers to develop or modify their own programs. LabVIEW uses a large amount of processing power and computer memory, thus requiring a powerful computer. A large-screen monitor is desirable when developing larger applications. LabVIEW is excellently suited for testing new monitoring paradigms, analysis algorithms, or user interfaces. The typical LabVIEW user is the researcher who wants to develop a new monitoring technique, a set of new (derived) variables by integrating signals from several existing patient monitors, closed-loop control of a physiological variable, or a physiological simulator.

  18. Supervisory Fertigation System Using Interactive Graphical Supervisory Control and Data Acquisition System

    Directory of Open Access Journals (Sweden)

    Fadhli Dzul Mohd Fauzi

    2016-08-01

    Full Text Available Mostly, farmers spent most of their time to supervise wide area of planting and it exhausted. The objective of this project is to develop an advanced monitoring system. In this paper, an attempt has been made by using Interactive Graphical Supervisory Control and Data Acquisition (SCADA System (IGSS software and Programmable Logic Controller (PLC which integrate with a fertigation system to solve the problem. The SCADA monitoring system is built based on Graphical User Interface (GUI by using IGSS software. As a result, the project is able to control and supervise the fertigation system prototype process smoothly. The project operates in two conditions which indicate the water level in tank and detect the humidity in the soil, thus the user can supervise their plant without perforce to the site of planting area. It can support two ways communication system, which is the main uniqueness and the special features of the project compared to today’s technology. The project can be improved by using the analog type device, where user can see a real time data on screen through supervised mode. The idea of making current project to online is also one of the improvements that can be made.

  19. Designof temperature acquisition system based on STC12CSA16S2%基于STC12C5A16S2的温度采集系统的设计

    Institute of Scientific and Technical Information of China (English)

    王鑫; 崔忠林; 刘建

    2012-01-01

    Based on the semiconductor physical and electrical properties of semiconductor devices, a low temperature self-start heater thermostat is designed for making sure the low temperature self-start and using as few components as possible to form a complete closed-loop control system. In this paper, using the temperature characteristic of PT100 metal platinum resistance with three wire connection and STC12C5A165S2 to acquire temperature signal, and 485 line of industry is used as communication of the temperature transfer in order to improving the reliability of information transmission. Through the thermal simulation experiment, the feasibility of the low-temperature self-start temperature acquisition system is verified.%以半导体器件的物理特性和电学特性为依据,设计了一种低温自启动恒温加热器,保证系统内部温度处于芯片正常工作范围内,并以尽可能少的元件构成完整的闭环控制系统。剃用PT100型金属铂电阻温度特性,使用三线制接法,采用STC12C5A16S2型单片机芯片对温度信号进行采集。使用工业上常用的RS485总线作为温度传输的通讯方式,以提高信息传输的可靠性。通过在高低温环境下实验,验证了该温度采集系统的可行性。

  20. Marketing Information Management Based on Electric Energy Data Acquisition System%以用电信息采集系统为基础的营销信息化管理

    Institute of Scientific and Technical Information of China (English)

    杜敏

    2011-01-01

    In this paper,based on constructing electric energy data acquisition system,the information and communications technology for support,real-time online collection to all of the customers and the exchange point data is realized and marketing business ″SG186″ is provided basic data timely,completely and accurately.The marketing information management system is realized and interactive ability of rapid response to market changes and response of customer demands is enhanced.To lay the foundation on promoting two-way interaction,implementing more competitive marketing strategy and optimizing marketing process,the marketing service level of grid corporations is continuously improved.%文章介绍了以建设用电信息采集系统为基础,以信息、通信技术为支撑,实现对所有客户和关口数据实时在线采集,及时、完整、准确地为"SG186"营销业务系统提供基础数据;实现营销信息化管理,提升快速响应市场变化、快速反应客户需求的互动能力,为推动双向互动营销、实施更具竞争力的市场营销策略、优化完善营销业务奠定基础,不断提升电网经营企业营销服务水平。

  1. Recent Development of Data Acquisition System on HL-2A

    Institute of Scientific and Technical Information of China (English)

    阳洋; 陈燎原; 李强; 潘莉

    2005-01-01

    This paper introduced recent development of data acquisition system(DAS) on the HL-2A tokamak. The existing DAS has to be remodeled because of the evident improvement on HL-2A itself and the increasing amount of corresponding experimental data. First, the experimental network on HL-2A Tokamak as a communication center is described in detail. Secondly,"The File's Format & Criterion of Experimental Data on HL-2A Tokamak" as the core of the new software is also presented. Thirdly, not only a multi-screen image display system on HL-2A is discussed, but also the build-up of a new display wall system is dealt with. Finally, on the graphical WINDOWS platform and on the basis of the new Data File's Format & Criterion, the new software on HL-2A is described, including a new multi-layer database management program,a real-time processing program, a common interactive analytic processing program and a data post-processing program, which is now under development.

  2. An earthquake data acquisition system for mobile ob-servation

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    @@Besides the same performance as the earthquake observation system possess used on the fixed earthquake station, such as wide dynamic range, high resolution, following special features are necessary for the earthquake data acquisition system (EDAS) applied for mobile observing in order to suit for running in the field: a) Reliability. The EDAS must work stably long time without being cared. b) Adaptability to the field environments. Earthquake observing in the field often encounters awful environments, such as dampness, dust, and abnormal climate, so how to make the instrument run well in the field circumstance must be considered. c) Ability of anti-vibration. The instrument for outdoor application must keep free from being destroyed during being transported long distance to the destination. d) Storage capacity. Because seismological data is large, how to store and collect the large amount data conveniently from the field is always a difficult point in the mobile observing system design. e) Automation. Timing and positioning automatically is necessary in the field. f) Power consumption. To reduce the power con-sumption as low as possible is very important to the mobile instrument which are powered with battery. g) Ability of testing itself. Testing itself automatically make it convenient in the fieldwork. h) Portability. The instrument must be portable and simply operated.

  3. Feasibility of a driver performance data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    Carter, R.J.; Spelt, P.F. [Oak Ridge National Lab., TN (United States); Goodman, M.J. [National Highway Traffic Safety Administration, Washington, DC (United States). Office of Crash Avoidance Research

    1994-06-01

    The National Highway Traffic Safety Administration (NHTSA) envisions many future situations in which the effectiveness and consequences of new intelligent vehicle-highway systems technologies will need to be studied in actual production vehicles. Such studies will enable evaluations in vehicles which are familiar to drivers. These studies would be future enhanced by the availability of an instrumentation package that can be easily installed in these vehicles to enable specific vehicle configurations of interest to be evaluated, thereby increasing the variety of vehicle options that are available for study. Ideally, an approach is needed that would allow data collection from a variety of vehicle models and types, and would address the issue of driver familiarity. Such an approach is embodied in the concept of a driver performance data acquisition system that could be installed in a wide range of vehicles within a relatively short period of time. As a universally adaptable system, it would provide researchers with the ability to manually input data as well as directly record information on driver, vehicle, roadway, and environmental parameters. Furthermore, it would enable the measurement of driver performance in the driver`s own vehicle, thereby ensuring vehicle familiarity. In addition, it would be possible to measure driver performance in relation to any vehicle design characteristic at relatively little expense and effort, and would make it easy to update existing models of driver/vehicle behavior to reflect performance characteristics in vehicles of current manufacture.

  4. Infrared image acquisition system for vein pattern analysis

    Science.gov (United States)

    Castro-Ortega, R.; Toxqui-Quitl, C.; Padilla-Vivanco, A.; Solís-Villarreal, J.

    2016-09-01

    The physical shape of the hand vascular distribution contains useful information that can be used for identifying and authenticating purposes; which provide a high level of security as a biometric. Furthermore, this pattern can be used widely in health field such as venography and venipuncture. In this paper, we analyze different IR imaging systems in order to obtain high visibility images of the hand vein pattern. The images are acquired in the range of 400 nm to 1300 nm, using infrared and thermal cameras. For the first image acquisition system, we use a CCD camera and a light source with peak emission in the 880 nm obtaining the images by reflection. A second system consists only of a ThermaCAM P65 camera acquiring the naturally emanating infrared light from the hand. A method of digital image analysis is implemented using Contrast Limited Adaptive Histogram Equalization (CLAHE) to remove noise. Subsequently, adaptive thresholding and mathematical morphology operations are implemented to get the vein pattern distribution.

  5. The H.E.S.S. Central Data Acquisition System

    CERN Document Server

    Balzer, A; Gajdus, M.; Göring, D.; Lopatin, A.; de Naurois, M.; Schlenker, S.; Schwanke, U.; Stegmann, C.

    2014-01-01

    The High Energy Stereoscopic System (H.E.S.S.) is a system of Imaging Atmospheric Cherenkov Telescopes (IACTs) located in the Khomas Highland in Namibia. It measures cosmic gamma rays of very high energies (VHE; $>100$) GeV using the Earth's atmosphere as a calorimeter. The H.E.S.S. Array entered Phase II in September 2012 with the inauguration of a fifth telescope that is larger and more complex than the other four. This paper will give an overview of the current H.E.S.S. central data acquisition (DAQ) system with particular emphasis on the upgrades made to integrate the fifth telescope into the array. At first, the various requirements for the central DAQ are discussed then the general design principles employed to fulfil these requirements are described. Finally, the performance, stability and reliability of the H.E.S.S. central DAQ are presented. One of the major accomplishments is that less than $0.8$ % of observation time has been lost due to central DAQ problems since 2009.

  6. Application of DSPs in Data Acquisition Systems for Neutron Scattering Experiments at the IBR—2 Pulsed Reactor

    Institute of Scientific and Technical Information of China (English)

    V.Butenko; B.Gebauer; 等

    2001-01-01

    DSPs are widely used in data acquisition systems on neutron spectrometers at the IBR-2 pulsed reactor.In this report several electronic blocks,based on the DSP of the TMS 320CXXXX family by the TI firm and intended to solve different tasks in DAQ systems,are described.

  7. 基于FPGA的小型化线列红外探测器数据采集系统设计%Design of IR linear data acquisition system based on FPGA

    Institute of Scientific and Technical Information of China (English)

    赵凯生; 汪江华; 潘晓东

    2012-01-01

    This paper introduces an IR linear detector data acquisition system.Quad differential amplifier and octal serial LVDS ADC are used in the system. Besides, serial-to-parallel convert, data abstract and joint are finished in the FPGA. Test results shows that the data acquisition system is stable and reliable,the SNR of system is 68.5 dB.The test results also shows the system can be used in many IR imaging system.%介绍了一种线列红外探测器数据采集系统的设计.该系统以FPGA作为逻辑控制核心,采用高度集成的4路差分放大器和8路串行LVDS输出的高精度模数转换器进行模拟信号处理,具备差分输入的FPGA控制器完成采集数据的实时串并转换和抽取拼接,具有小型化和高性能的特点.测试结果表明,该采集系统工作稳定可靠,信噪比达到68.5 dB,可以满足大部分红外成像系统的性能和体积要求.

  8. Developing Control and Monitoring Software for the Data Acquisition System of the COMPASS Experiment at CERN

    Directory of Open Access Journals (Sweden)

    Martin Bodlák

    2013-01-01

    Full Text Available This paper focuses on the analysis, design and development of software for the new data acquisition system of the COMPASS experiment at CERN. In this system, the data flow is controlled by custom hardware; the software will therefore be used only for run control and for monitoring. The requirements on the software have been analyzed, and the functionality of the system has been defined. The system consists of several distributed nodes; communication between the nodes is based on a custom protocol and a DIM library. A minimal version of the system has already been implemented. Preliminary results of performance and stability tests have shown that the system fulfills the defined requirements, and is stable. In the next phase of development, the system will be tested on the real hardware. It is expected that the system will be ready for deployment in 2014.

  9. Pointing, acquisition, and tracking considerations for mobile directional wireless communications systems

    Science.gov (United States)

    Rzasa, John; Ertem, Mehmet Can; Davis, Christopher C.

    2013-09-01

    High capacity directional wireless communications networks are an active research area because of their Gb/s or greater data rates over link lengths of many kilometers, providing fiber-like networks through the air. Their high data rates arise partly from their very high carrier frequencies (characteristic requires that transceivers be pointed precisely to their counterparts. In almost all cases this means that the transceiver aperture is mechanically pointed by a rotation stage, commonly known as a gimbal. How these platforms initially point at a target, acquire the signal, and then stay locked on the signal is known as pointing, acquisition, and tracking (PAT). Approaches for PAT in both RF and FSO have some similarities, but require overall divergent solutions, especially if the platforms are moving. This paper elaborates on the various considerations required for designing and implementing a successful PAT system for both directional RF and FSO systems. Approaches for GPS or beacon based pointing, types of acquisition scans, and the effects of platform vibration are analyzed. The acquisition time for a spiral scan of a given radius with an initial pointing error has been measured experimentally for a gimbal pointing system.

  10. Integrated data acquisition, storage, retrieval and processing using the COMPASS DataBase (CDB)

    Energy Technology Data Exchange (ETDEWEB)

    Urban, J., E-mail: urban@ipp.cas.cz [Institute of Plasma Physics AS CR, v.v.i., Za Slovankou 3, 182 00 Praha 8 (Czech Republic); Pipek, J.; Hron, M. [Institute of Plasma Physics AS CR, v.v.i., Za Slovankou 3, 182 00 Praha 8 (Czech Republic); Janky, F.; Papřok, R.; Peterka, M. [Institute of Plasma Physics AS CR, v.v.i., Za Slovankou 3, 182 00 Praha 8 (Czech Republic); Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, 180 00 Praha 8 (Czech Republic); Duarte, A.S. [Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa (Portugal)

    2014-05-15

    Highlights: • CDB is used as a new data storage solution for the COMPASS tokamak. • The software is light weight, open, fast and easily extensible and scalable. • CDB seamlessly integrates with any data acquisition system. • Rich metadata are stored for physics signals. • Data can be processed automatically, based on dependence rules. - Abstract: We present a complex data handling system for the COMPASS tokamak, operated by IPP ASCR Prague, Czech Republic [1]. The system, called CDB (COMPASS DataBase), integrates different data sources as an assortment of data acquisition hardware and software from different vendors is used. Based on widely available open source technologies wherever possible, CDB is vendor and platform independent and it can be easily scaled and distributed. The data is directly stored and retrieved using a standard NAS (Network Attached Storage), hence independent of the particular technology; the description of the data (the metadata) is recorded in a relational database. Database structure is general and enables the inclusion of multi-dimensional data signals in multiple revisions (no data is overwritten). This design is inherently distributed as the work is off-loaded to the clients. Both NAS and database can be implemented and optimized for fast local access as well as secure remote access. CDB is implemented in Python language; bindings for Java, C/C++, IDL and Matlab are provided. Independent data acquisitions systems as well as nodes managed by FireSignal [2] are all integrated using CDB. An automated data post-processing server is a part of CDB. Based on dependency rules, the server executes, in parallel if possible, prescribed post-processing tasks.

  11. Automatic Speech Acquisition and Recognition for Spacesuit Audio Systems

    Science.gov (United States)

    Ye, Sherry

    2015-01-01

    NASA has a widely recognized but unmet need for novel human-machine interface technologies that can facilitate communication during astronaut extravehicular activities (EVAs), when loud noises and strong reverberations inside spacesuits make communication challenging. WeVoice, Inc., has developed a multichannel signal-processing method for speech acquisition in noisy and reverberant environments that enables automatic speech recognition (ASR) technology inside spacesuits. The technology reduces noise by exploiting differences between the statistical nature of signals (i.e., speech) and noise that exists in the spatial and temporal domains. As a result, ASR accuracy can be improved to the level at which crewmembers will find the speech interface useful. System components and features include beam forming/multichannel noise reduction, single-channel noise reduction, speech feature extraction, feature transformation and normalization, feature compression, and ASR decoding. Arithmetic complexity models were developed and will help designers of real-time ASR systems select proper tasks when confronted with constraints in computational resources. In Phase I of the project, WeVoice validated the technology. The company further refined the technology in Phase II and developed a prototype for testing and use by suited astronauts.

  12. 基于DSP和C语言的变压器振动信号采集与分析系统%Transformer vibration signal acquisition and analysis system based on DSP and C language

    Institute of Scientific and Technical Information of China (English)

    陶新民; 李震; 姜述杰

    2015-01-01

    电力变压器作为电力设备的枢纽具有重要的作用. 变压器器身的振动信号含有丰富的运行状况信息. 文中设计了基于DSP的多路振动信号采集板和基于C语言的上位机软件,利用该系统能够实时准确地采集到变压器器身各部位的振动状况;同时在上位机软件上利用小波包分析对变压器振动信号的频段-能量分布进行分析,可以提取变压器故障诊断的判决特征值.%A power transformer as the hub of power equipment plays an important role, and the vibration signals of the transformer body have rich transformer' s operation status information. This paper designed the multi-channel vi-bration signal acquisition board based on DSP and the PC software programmed by C language. This system can col-lect each part of the transformer body' s real-time vibration condition correctly;at the same time, the wavelet pack-et is used to analyze the frequency bands-energy distribution of the transformer' s vibration signal, and then the fea-tures of the transformer fault diagnosis can be calculated effectively.

  13. 基于MFC的AUV多传感器数据采集系统设计及测试%Design and test for AUV multi-sensor data acquisition system based on MFC

    Institute of Scientific and Technical Information of China (English)

    高菲; 张东昆; 侯建钊

    2014-01-01

    由于海底环境的复杂性与任务的多样性,这就对AUV航向位姿环境等信息的实时性和可靠性提出很高的要求。为了降低海试成本和风险,以智能小车为硬件平台,装载AHRS、GPS、激光测距仪(LMS)等多个传感器,组成数据采集系统,采用模块化分布,使用多线程编程技术和串口通信技术,创建基于对话框的MFC应用程序,实现人机交互。%In the 21st century,the ocean resources have been attracting more and more attentions from human,and AUV re⁃search has gradually become the mainstream trend. A higher requirement for the real⁃time performance and reliability of the heading,altitudes and location information of AUV is proposed Due to the complexity of underwater environment and varieties of task. In order to reduce the test cost and risk on sea,an intelligent vehicle is taken as a platform with AHRS,GPS,laser range finder and several sensors to constitute a data acquisition system,and modular distribution,multi⁃thread programming technolo⁃gy and serial port communication technology are adopted to establish a MFC application program based on dialog box,so as to realize the human⁃computer interaction.

  14. Idaho National Laboratory Supervisory Control and Data Acquisition Intrusion Detection System (SCADA IDS)

    Energy Technology Data Exchange (ETDEWEB)

    Jared Verba; Michael Milvich

    2008-05-01

    Current Intrusion Detection System (IDS) technology is not suited to be widely deployed inside a Supervisory, Control and Data Acquisition (SCADA) environment. Anomaly- and signature-based IDS technologies have developed methods to cover information technology-based networks activity and protocols effectively. However, these IDS technologies do not include the fine protocol granularity required to ensure network security inside an environment with weak protocols lacking authentication and encryption. By implementing a more specific and more intelligent packet inspection mechanism, tailored traffic flow analysis, and unique packet tampering detection, IDS technology developed specifically for SCADA environments can be deployed with confidence in detecting malicious activity.

  15. Analyzing Systems Integration Best Practices and Assessment in DoD Space Systems Acquisition

    Science.gov (United States)

    2009-12-01

    insufficient monitoring of Systems Engineering & Integration (SE&I) progress. Resolving these program and technical maladies first requires an accurate...System Acquisition program, the subject of this thesis is the first step in curing these maladies . Scanning through Government Accountability Office (GAO...design and interface level.‖ (20:11) ―The JPO decided to retain core systems engineering/system integration responsibility. Col. Parkinson had a

  16. Data Acquisition and Control System for Broad-band Microwave Reflectometry on EAST

    CERN Document Server

    Wen, Fei; Zhang, Shoubiao; Kong, Defeng; Wang, Yuming; Han, Xiang; Qu, Hao; Gao, Xiang

    2014-01-01

    Microwave reflectometry is a non-intrusive plasma diagnostic tool which is widely applied in many fusion devices. In 2014, the microwave reflectometry on Experimental Advanced Superconducting Tokamak (EAST) had been upgraded to measure plasma density profile and fluctuation, which covered the frequency range of Q-band (32-56 GHz), V-band (47-76 GHz) and W-band (71-110 GHz). This paper presented a dedicated data acquisition and control system (DAQC) to meet the measurement requirements of high accuracy and temporal resolution. The DAQC consisted of two control modules, which integrated arbitrary waveform generation block (AWG) and trigger processing block (TP), and two data acquisition modules (DAQ) that was implemented base on the PXIe platform from National Instruments (NI). All the performance parameters had satisfied the requirements of reflectometry. The actual performance will be further examined in the experiments of EAST in 2014.

  17. English Vocabulary Teaching Based on learners’Acquisition

    Institute of Scientific and Technical Information of China (English)

    朱文会

    2013-01-01

    Vocabulary is very important in language study, but it is not easy for students to learn efficiently. This essay first has a deep insight into the acquisition by learners, and then gives some ideas about teaching vocabulary in ELT classroom.

  18. Data acquisition and meter unit based in wifi communication protocol

    Directory of Open Access Journals (Sweden)

    Gerardo Cázarez Ayala

    2012-05-01

    Full Text Available Without doubt, the competitive fast rhythm of the industries is one of the main causes helped bring to the accelerated growth of the electronic technology and the communication. The need to develop new products with a best quality, cheaper and faster as assure and increase the quality of the products in the international markets, requires of new technologies to the metering, monitoring and control of their production processes, of which finality is to improve the processes to guaranteed their products in the market in the less time possible, the best quality and low cost for the final consumer. This work is based in the design and implementation of a Wireless Data Acquisition Unit based in WiFi protocol, which is oriented to meter, monitoring and the control of processes in the industry, commercial and the home automation applications, using one of the wirelessprotocols with the biggest acceptance in the market, with the main objective of to take advantage of the installed physical infrastructure in the place of the application, like industry, company or house. The Unit is based in the RN-131G, a Roving Network company module, which is able to work in stand-alone mode with ultralow power consummation and supporting the IEEE 802.11b/g protocols, in which is possible to achieve transfer rates of up to 11 Mbps and 54 Mbps in /b & /g specifications respectively. Whit this unit is possible to meter up to 5 analogs signals with 14 bits precision and has include a temperature and relative humidity sensors. This unit can meter two digital signals and act mean two digitals outputs, and gas include an USB port for communication and programming tasks.

  19. Analytical models and system topologies for remote multispectral data acquisition and classification

    Science.gov (United States)

    Huck, F. O.; Park, S. K.; Burcher, E. E.; Kelly, W. L., IV

    1978-01-01

    Simple analytical models are presented of the radiometric and statistical processes that are involved in multispectral data acquisition and classification. Also presented are basic system topologies which combine remote sensing with data classification. These models and topologies offer a preliminary but systematic step towards the use of computer simulations to analyze remote multispectral data acquisition and classification systems.

  20. 75 FR 71560 - Defense Federal Acquisition Regulation Supplement; Cost and Software Data Reporting System (DFARS...

    Science.gov (United States)

    2010-11-24

    ... is provided for contractors with accounting software that does not accommodate the additional data... Acquisition Regulation Supplement; Cost and Software Data Reporting System (DFARS Case 2008-D027) AGENCY... Cost and Software Data Reporting system requirements for Major Defense Acquisition Programs and...