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. The implement of java based GUI for data acquisition system

    International Nuclear Information System (INIS)

    Web based technique have been used to produce a Graphic User Interface framework for small Data Acquisition System. A CORBA library used for the communication with the JRCS servers. The GUI was implemented by Java Swing. the integration between Java and CORBA provide a powerful independent distributed environment. (authors)

  7. The wireless data acquisition system based on Bluetooth

    Science.gov (United States)

    Cheng, En; Xu, Xiao-na; Wu, Si-long

    2013-03-01

    Bluetooth is one of the wireless communication technology, which is developing rapidly in recent years. As a result of low cost and short distance, Bluetooth can set up a special connection for portable electronic devices and stationary electronic equipment communication environment. The paper studies a data acquisition system based on Bluetooth. The system can collect the angle of motor rotation and send it to the Receiver through the Bluetooth. The results show that the system can be run normal.[1

  8. 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 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....

  9. 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

  10. Panoramic dynamic data acquisition system based on unmanned helicopter

    Science.gov (United States)

    Yao, Yigang; Zhao, Shuguang; Lin, Zhaorong; Wen, Gaojin; Zhang, Qian; Zhang, Weiwei

    2012-10-01

    In recent years, the archaeological tourism has rapidly been developed all over the world, and it has become more and more popular. However, the scope of the human activities has been restricted by complicated geographical terrain, and the popularization of archaeological tourism has been hampered. For the purpose of solving the above problem, the archaeological tourism system of the panoramic dynamic data acquisition system based on unmanned helicopter is designed, and we got the image of the Chinese Ming Dynasty Great Wall realtime 360˚ panoramic dynamic monitor. The applying of this system will increase the scope of the archaeological tourism activities.

  11. FPGA based data acquisition system for COMPASS experiment

    CERN Document Server

    Bodlak, M; Jary, V; Huber, S; Konorov, I; Levit, D; Novy, J; Paul, S; Salac, R; Virius, M

    2014-01-01

    This paper discusses the present data acquisition system (DAQ) of the COMPASS experiment at CERN and presents development of a new DAQ. The new DAQ must preserve present data format and be able to communicate with FPGA cards. Parts of the new DAQ are based on state machines and they are implemented in C++ with usage of the QT framework, the DIM library, and the IPBus technology. Prototype of the system is prepared and communication through DIM between parts was tested. An implementation of the IPBus technology was prepared and tested. The new DAQ proved to be able to fulfill requirements.

  12. Distributed CAN-BUS-based data acquisition system

    International Nuclear Information System (INIS)

    A distributed remote-control system for large nuclear physical setups is intended to collect, store, and analyze data arriving from detecting devices and to visualize them via the WEB. The system uses the CAN industrial data transmission network and the DeviceNet high-level protocol. The hardware part is the set of controllers, which convert signals of the detecting devices into a frequency and transmit them in the digital form via the CAN network to the host computer. The software realizes the DeviceNet protocol stack, which ensures the data acquisition and transmission. The user interface is based on dynamic WEB pages. The system is used for monitoring dark noises of photomultiplier tubes in the BOREXINO neutrino detector (Italy)

  13. Network Based Data Acquisition and Logging System using PIC Microcontroller

    Directory of Open Access Journals (Sweden)

    Tarun Kumar Sharma

    2014-03-01

    Full Text Available This paper presents the design and implementation of a multi-channel data acquisition and logging system which can be used in a variety of applications. The designed data acquisition and logging system uses analog multiplexer, a bipolar analog to digital converter, a voltage reference and an SD card. The device is developed around PIC Microcontroller. The most important feature of the device which makes it different from other data acquisition devices is the presence of the Ethernet port. This feature enables it to work in networked environment. The performance of the device is tested and crosschecked. The present data acquisition and logging system is expected to be very useful to varieties of our own developmental projects, given its ability to locally store data and availability of general purpose digital I/O.

  14. A microprocessor-based power control data acquisition system

    International Nuclear Information System (INIS)

    The project reported deals with one of the aspects of power plant control and management. In order to perform optimal distribution of power and load switching, one has to solve a specific optimization problem. In order to solve this problem one needs to collect current and power expenditure data from a large number of channels and have them processed. This particular procedure is defined as data acquisition and it constitutes the main topic of this project. A microprocessor-based data acquisition system for power management is investigated and developed. The current and power data of about 100 analog channels are sampled and collected in real-time. These data are subsequently processed to calculate the power factor (cos phi) for each channel and the maximum demand. The data is processed by an AMD 9511 Arithmetic Processing Unit and the whole system is controlled by an Intel 8080A CPU. All this information is then transfered to a universal computer through a synchronized communication channel. The optimization computations would be performed by the high level computer. Different ways of performing the search of data over a large number of channels have been investigated. A particular solution to overcome the gain and offset drift of the A/D converter, using software, has been proposed. The 8080A supervises the collection and routing of data in real time, while the 9511 performs calculation, using these data. (Author)

  15. A LabVIEW- based wind tunnel data acquisition system

    OpenAIRE

    Huff, Michael R.

    1998-01-01

    Approved for public release; distribution is unlimited The NPS Aerolab Low Speed Wind Tunnel located in Halligan Hall of the Navy Postgraduate School has been in operation since 1953. Although the tunnel is well maintained, its data acquisition system has not kept pace with modem technology. An effective but affordable solution for acquiring data was needed. It was determined that a software package known as LabVIEW would provide a low cost, data acquisition solution that will enhance the ...

  16. A Java-based data acquisition system for nuclear physics

    International Nuclear Information System (INIS)

    Jam is a Java-based user-friendly data acquisition and analysis system developed for CAMAC-based nuclear physics experiments. The system is menu-driven and has been designed to minimize the expertise needed to perform the essential tasks necessary to collect and sort data. The front-end hardware is VME based and includes a MVME167 running VxWorks, which is networked to a Sun workstation. The sorting, display, and control routines are all written in Java, and the front-end code is written in C. With a Sparc 5 workstation, events with 10 parameters, 15 histograms, and 10 gate checks the system can collect and sort data up to event rates of 1 kHz. By only sorting a fraction of the events, but storing all events, it can be run at the front-end limit of 10 kHz. Java's promise of platform independence has been found to be realistic, and Jam has been used with no modifications to sort offline on multiple platforms. Jam has a modular design allowing it to be easily modified. For example, Jam has an interface to allow users to write their own fitting routines. This article discusses the system's design and performance, as well as some advantages and disadvantages of using Java

  17. The Data Acquisition System Based on PMC Bus

    CERN Document Server

    Igarashi, Y; Higuchi, T; Ikeno, M; Inoue, E; Itoh, R; Kodama, H; Murakami, T; Nagasaka, Y; Nakao, M; Nakayoshi, K; Saitoh, M; Shimazaki, S; Suzuki, S Y; Tanaka, M; Tauchi, K; Varner, G; Yamauchi, M; Yasu, Y; Katayama, T; Watanabe, K; Ishizuka, M; Onozawa, S

    2003-01-01

    High energy physics experiments in KEK/Japan rush into over KHz trigger stage. Thus, we need a successor of the data acquisition(DAQ) system that replaces the CAMAC or FASTBUS systems. To meet these needs, we have developed a DAQ system which includes a crate, base-board modules, daughter cards for front-end A/D or T/D conversion, and back-end communication cards for data transfer and timing control. The size of the crate is for the 9U Euro-cards with the standard VME32 bus and extension connectors for power supply. The base-board comprises of a local bus with the sequencer connected to the front-end daughter cards via event buffering FIFOs, and the standard PMC (PCI mezzanine card) bus to be set a PMC processor unit to reduce data size from the front-end daughter cards. A data transfer module, which is connected to the event building system, and a trigger control unit, which communicates with the central timing controller are installed on the back-end communication card connected to the rear end of the base-...

  18. Data acquisition system based on the 15 VSM-5 microcomputer

    International Nuclear Information System (INIS)

    Data acquisition system based on the programmable 15 vsm-5 microcomputer is described. Data are accepted from transducers and recorded on a magnetic tape for subsequent processing on the BESM-6 computer. The system comprises transducers, signal commutator, analog-to-digital converter (ADC), magnetic tape recorder ''Majak-203'', the ''CONSUL-260'' printer and is controlled by specially developed microprograms placed in a 15 VCM-5, permanent memory device. Magnetic tape recording reading unit and interface are developed through which microprograms control the whole system. Besides transducer data, two control numbers corresponding to ''zero'' and middle of the range of accepted from the ADC numbers are recorded on the magnetic tape. An means of control numbers the ADC reading drift is determined and corrected at processing. For ensuring data reliability the recorded data are controlled. The minimum inquiry period is 5 ms for each transducer. The magnetic tape can be used for recording dode digit binary or hexadigit binary-decimal codes. The measuring accuracy is determined by ADC accuracy and equals 0.2%

  19. 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.

  20. Design of laser echo data acquisition system based on USB2.0

    Science.gov (United States)

    Shang, Fuzhou; Song, Yong; Hao, Qun; Zhang, Kai; Li, Meinan; Zhang, Wenlong

    2012-11-01

    In this paper, a high-speed data acquisition system based on the technology of USB2.0 (Universal Serial Bus) is designed, in which USB master logic is implemented in an FPGA (Field Programmable Gate Array). Firstly, the hardware of data acquisition system is discussed, which includes chip selection, data acquisition and transmission circuit and power conversion circuit. Secondly, the corresponding software including USB firmware program, USB device driver and application program as well as its modifications have been described. The designed hardware and software will help to achieve a data acquisition system with the characterstics of high speed and high accuracy, etc.

  1. Microprocessor based dual bus structured data acquisition and processing system : DAPS-80

    International Nuclear Information System (INIS)

    The microprocessor based dual bus structured data acquisition and processing system has been designed around Intel 8080 microprocessor. The system is described and operational results are given. (M.G.B.)

  2. A UMLS-based knowledge acquisition tool for rule-based clinical decision support system development.

    OpenAIRE

    Achour, Soumeya,; Dojat, Michel; Rieux, Claire; Bierling, Philippe; Lepage, Eric

    2001-01-01

    International audience Decision support systems in the medical field have to be easily modified by medical experts themselves. The authors have designed a knowledge acquisition tool to facilitate the creation and maintenance of a knowledge base by the domain expert and its sharing and reuse by other institutions. The Unified Medical Language System (UMLS) contains the domain entities and constitutes the relations repository from which the expert builds, through a specific browser, the expl...

  3. 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.

  4. Data acquisition system DAPHNE

    International Nuclear Information System (INIS)

    DAPHNE is a data acquisition system which is being created to satisfy the needs of the accelerator based experimental research program of the division in particular the one at ATLAS. It is CAMAC based with a hardware front end consisting of multiple single board processors in a Multibus cage to provide a parallel processing capability. The host computer, a VAX 750, will provide for data logging, histogram memory space, and user interaction. The first DAPHNE system is being designed and constructed for use by ATLAS and is expected to be ready by late spring, 1985

  5. Course Ontology-Based User's Knowledge Requirement Acquisition from Behaviors within E-Learning Systems

    Science.gov (United States)

    Zeng, Qingtian; Zhao, Zhongying; Liang, Yongquan

    2009-01-01

    User's knowledge requirement acquisition and analysis are very important for a personalized or user-adaptive learning system. Two approaches to capture user's knowledge requirement about course content within an e-learning system are proposed and implemented in this paper. The first approach is based on the historical data accumulated by an…

  6. Comparison between wire and wireless EEG acquisition systems based on SSVEP in an Independent-BCI.

    Science.gov (United States)

    Tello, Richard M G; Müller, Sandra M T; Bastos-Filho, Teodiano; Ferreira, Andre

    2014-01-01

    This paper presents a comparison between two different technologies of acquisition systems (BrainNet36 and Emotiv Epoc) for an Independent-BCI based on Steady-State Visual Evoked Potential (SSVEP). Two stimuli separated by a viewing angle experiments. The class is obtained through a criterion of maxima. The left and right flicker stimuli were modulated at frequencies of 8.0 and 13.0 Hz, respectively. Acquisition via BrainNet system showed better results, obtaining the highest value for accuracy (100%) and the highest ITR (35.18 bits/min). This Independent-BCI is based on covert attention. PMID:25569887

  7. 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.

  8. 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.

  9. FPGA Based High Accuracy Synchronous Acquisition Design for Binocular Vision System

    Directory of Open Access Journals (Sweden)

    Lili Lin

    2011-06-01

    Full Text Available This paper proposes a coarse-to-fine two-level synchronous data acquisition and transmission system for binocular stereo vision, which satisfies strict synchronous requirement of stereo vision. Specifically, this synchronization system design contains: coarse level synchronous based on hardware circuit design and the fine level synchronous based on hardware description language (HDL design. The former includes the synchronization design of clock and external trigger. The latter utilizes a multi-level synchronous control strategy from field-level to pixel-level, which consists of field-synchronous acquisition of the two-channel video inputs, two-channel Ping-pong buffers switch control module, and pixel-synchronous bit-splicing and PCI transmission module. The experiments of synchronous acquisition and display demonstrate the high reliability and great performance of this synchronous system.

  10. 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...

  11. An adaptive structure data acquisition system using a graphical-based programming language

    Science.gov (United States)

    Baroth, Edmund C.; Clark, Douglas J.; Losey, Robert W.

    1992-01-01

    An example of the implementation of data fusion using a PC and a graphical programming language is discussed. A schematic of the data acquisition system and user interface panel for an adaptive structure test are presented. The computer programs (a series of icons 'wired' together) are also discussed. The way in which using graphical-based programming software to control a data acquisition system can simplify analysis of data, promote multidisciplinary interaction, and provide users a more visual key to understanding their data are shown.

  12. Knowledge acquisition and discovery for the textual case-based cooking system WIKITAAABLE

    OpenAIRE

    Badra, Fadi; Cojan, Julien; Cordier, Amélie; Lieber, Jean; Meilender, Thomas; Mille, Alain; Molli, Pascal; Nauer, Emmanuel; Napoli, Amedeo; Skaf-Molli, Hala; Toussaint, Yannick

    2009-01-01

    International audience The textual case-based cooking systemWIKITAAABLE participates to the second Computer cooking contest (CCC). It is an extension of the TAAABLE system that has participated to the first CCC. WIKITAAABLE's architecture is composed of a semantic wiki used for the collaborative acquisition of knowledge (recipe, ontology, adaptation knowledge) and of a case-based inference engine using this knowledge for retrieving and adapting recipes. This architecture allows various mod...

  13. A FADC-based Data Acquisition System for the KASCADE-Grande Experiment

    CERN Document Server

    Walkowiak, W; Apel, W D; Badea, F; Bekk, K; Bercuci, A; Bertaina, M; Blümer, H; Bozdog, H; Brancus, I M; Bruggemann, M; Buchholz, P; Büttner, C; Chiavassa, A; Daumiller, K; di Pierro, F; Doll, P; Engel, R; Engler, J; Feler, F; Ghia, P L; Gils, H J; Glasstetter, R; Haungs, A; Heck, D; Hörandel, J R; Kampert, K H; Klages, H O; Kolotaev, Yu; Maier, G; Mathes, H J; Mayer, H J; Milke, J; Mitrica, B; Morello, C; Müller, M; Navarra, G; Obenland, R; Oehlschläger, J; Ostapchenko, S; Over, S; Petcu, M; Plewnia, S; Rebel, H; Risse, A; Roth, M; Schieler, H; Scholz, J; Stumpert, M; Thouw, T; Toma, G; Trinchero, G C; Ulrich, H; Valchierotti, S; Van Buren, J; Weindl, A; Wochele, J; Zabierowski, J; Zagromski, S; Zimmermann, D

    2006-01-01

    We present the design and first test results of a new FADC-based data acquisition (DAQ) system for the Grande array of the KASCADE-Grande experiment. The original KASCADE experiment at the Forschungszentrum Karlsruhe, Germany, has been extended by 37 detector stations of the former EAS-TOP experiment (Grande array)to provide sensitivity to energies of primary particles from the cosmos of up to $10^{18}$ eV. The new FADC-based DAQ system will improve the quality of the data taken by the Grande array by digitizing the scintillator signals with a 250 MHz sampling rate. events per second. Two Grande stations have been equipped with the FADC-based data acquisition system and first data are shown.

  14. Data acquisition system

    International Nuclear Information System (INIS)

    The topic of this paper deals with a multi parametric acquisition system developed around a four input Analog to Digital Converter working in CAMAC Standard. The acquisition software is built in MS Visual C++ on a standard PC with a USB interface. It has a visual interface which permits Start/Stop of the acquisition, setting the type of acquisition (True/Live time), the time and various menus for primary data acquisition. The spectrum is dynamically visualized with a moving cursor indicating the content and position. The microcontroller PIC16C765 is used for data transfer from ADC to PC; The microcontroller and the software create an embedded system which emulates the CAMAC protocol programming, the 4 input ADC for operating modes ('zero suppression', 'addressed' and 'sequential') and handling the data transfers from ADC to its internal memory. From its memory the data is transferred into the PC by the USB interface. The work is in progress. (authors)

  15. [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.

  16. Improvement of web-based data acquisition and management system for GOSAT validation lidar data analysis

    Science.gov (United States)

    Okumura, Hiroshi; Takubo, Shoichiro; Kawasaki, Takeru; Abdullah, Indra Nugraha; Uchino, Osamu; Morino, Isamu; Yokota, Tatsuya; Nagai, Tomohiro; Sakai, Tetsu; Maki, Takashi; Arai, Kohei

    2013-01-01

    A web-base data acquisition and management system for GOSAT (Greenhouse gases Observation SATellite) validation lidar data-analysis has been developed. The system consists of data acquisition sub-system (DAS) and data management sub-system (DMS). DAS written in Perl language acquires AMeDAS (Automated Meteorological Data Acquisition System) ground-level local meteorological data, GPS Radiosonde upper-air meteorological data, ground-level oxidant data, skyradiometer data, skyview camera images, meteorological satellite IR image data and GOSAT validation lidar data. DMS written in PHP language demonstrates satellite-pass date and all acquired data. In this article, we briefly describe some improvement for higher performance and higher data usability. GPS Radiosonde upper-air meteorological data and U.S. standard atmospheric model in DAS automatically calculate molecule number density profiles. Predicted ozone density prole images above Saga city are also calculated by using Meteorological Research Institute (MRI) chemistry-climate model version 2 for comparison to actual ozone DIAL data.

  17. 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.

  18. Method for signal conditioning and data acquisition system, based on variable amplification and feedback technique

    Energy Technology Data Exchange (ETDEWEB)

    Conti, Livio, E-mail: livio.conti@uninettunouniversity.net [Facoltà di Ingegneria, Università Telematica Internazionale Uninettuno, Corso Vittorio Emanuele II 39, 00186 Rome, Italy INFN Sezione Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome (Italy); Sgrigna, Vittorio [Dipartimento di Matematica e Fisica, Università Roma Tre, 84 Via della Vasca Navale, I-00146 Rome (Italy); Zilpimiani, David [National Institute of Geophysics, Georgian Academy of Sciences, 1 M. Alexidze St., 009 Tbilisi, Georgia (United States); Assante, Dario [Facoltà di Ingegneria, Università Telematica Internazionale Uninettuno, Corso Vittorio Emanuele II 39, 00186 Rome, Italy INFN Sezione Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome (Italy)

    2014-08-21

    An original method of signal conditioning and adaptive amplification is proposed for data acquisition systems of analog signals, conceived to obtain a high resolution spectrum of any input signal. The procedure is based on a feedback scheme of the signal amplification with aim at maximizing the dynamic range and resolution of the data acquisition system. The paper describes the signal conditioning, digitization, and data processing procedures applied to an a priori unknown signal in order to enucleate its amplitude and frequency content for applications in different environments: on the ground, in space, or in the laboratory. An electronic board of the conditioning module has also been constructed and described. In the paper are also discussed the main fields of application and advantages of the method with respect to those known today.

  19. Installation of a digitizer based pulse processing and data acquisition system and related developments

    International Nuclear Information System (INIS)

    The use of digitizer based pulse processing and data acquisition system at the recent campaign of the Indian National Gamma Array (INGA) at Tata Institute of Fundamental Research (TIFR), Mumbai, has emanated the use of digital signal processing in spectroscopic endeavours being pursued in the country. The long and successful operation of the system at TIFR, and several experiments carried out therein, have contributed in edifying the user community on the nuances of the new technology and the possible refinements/ requirements in the context of the γ-ray spectroscopic endeavours

  20. 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.

  1. Performance Confirmation Data Acquisition System

    International Nuclear Information System (INIS)

    The purpose of this analysis is to identify and analyze concepts for the acquisition of data in support of the Performance Confirmation (PC) program at the potential subsurface nuclear waste repository at Yucca Mountain. The scope and primary objectives of this analysis are to: (1) Review the criteria for design as presented in the Performance Confirmation Data Acquisition/Monitoring System Description Document, by way of the Input Transmittal, Performance Confirmation Input Criteria (CRWMS M and O 1999c). (2) Identify and describe existing and potential new trends in data acquisition system software and hardware that would support the PC plan. The data acquisition software and hardware will support the field instruments and equipment that will be installed for the observation and perimeter drift borehole monitoring, and in-situ monitoring within the emplacement drifts. The exhaust air monitoring requirements will be supported by a data communication network interface with the ventilation monitoring system database. (3) Identify the concepts and features that a data acquisition system should have in order to support the PC process and its activities. (4) Based on PC monitoring needs and available technologies, further develop concepts of a potential data acquisition system network in support of the PC program and the Site Recommendation and License Application

  2. The MicroVAX-based data acquisition system for D0

    International Nuclear Information System (INIS)

    A large array of Micro VAX computers will be used for high-speed data acquisition and online filtering in the D0 experiment at Fermi National Laboratory. Described is this system, as well as several smaller data acquisition systems now operational, with particular emphasis on the control and communication software. The computers in this array will run under VAXELN

  3. Python based integration of GEM detector electronics with JET data acquisition system

    Science.gov (United States)

    Zabołotny, Wojciech M.; Byszuk, Adrian; Chernyshova, Maryna; Cieszewski, Radosław; Czarski, Tomasz; Dalley, Simon; Hogben, Colin; Jakubowska, Katarzyna L.; Kasprowicz, Grzegorz; Poźniak, Krzysztof; Rzadkiewicz, Jacek; Scholz, Marek; Shumack, Amy

    2014-11-01

    This paper presents the system integrating the dedicated measurement and control electronic systems for Gas Electron Multiplier (GEM) detectors with the Control and Data Acquisition system (CODAS) in the JET facility in Culham, England. The presented system performs the high level procedures necessary to calibrate the GEM detector and to protect it against possible malfunctions or dangerous changes in operating conditions. The system also allows control of the GEM detectors from CODAS, setting of their parameters, checking their state, starting the plasma measurement and to reading the results. The system has been implemented using the Python language, using the advanced libraries for implementation of network communication protocols, for object based hardware management and for data processing.

  4. 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.

  5. 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.

  6. A microcomputer based multi parametric system for nuclear data acquisition and processing

    International Nuclear Information System (INIS)

    A four-parameter Multi parametric System for the acquisition and processing of nuclear data is described. It is characterized for its flexibility and relatively low cost, also guaranteeing a high acquisition capacity. The system allows to be utilized in a multi parametric manner, in pulse height analysis or in many combination of both for parameter. It is described the hardware and the software of the system

  7. Modular data acquisition system based on transputer technology for bi-dimensional time coincidence counting

    International Nuclear Information System (INIS)

    We describe the rationale and the test of a modular Data AcQuisition system (DAQ) for bi-dimensional (X-Y) digital imaging, based on a 16 channel Time-to-Digital Converter (TDC) NIM module connected to a specially designed TRAnsputer Module (TRAM). TDC time resolution is 12.5 ns (LSB) with a 40 MHz clock, time range is 3.3 s (28 bits), for a maximum rate of 500 kHz/channel guaranteed. The TDC+TRAM pair is the basic unit that can be scaled in modules of 8X+8Y channels to meet the user's requirement for a larger number of X-Y channels to be considered simultaneously. TDC directly accesses the large RAM memory (32 Mbytes) of the INMOS T805 (20 MHz) transputer on the TRAM board. Each transputer in the modular system is a node of a ring network, whose root transputer node is hosted in a i386-based personal computer. After real-time data acquisition, a parallel reconstruction algorithm resolves time coincidences. Laboratory tests give a reconstruction time of 6.2 s for 1.28 105 events on 16 X+16 Y channels (2 TDC+2 TRAM), obtained in 1 s with a fluence of 5x104 events/mm2 (typically used in radiological imaging) on an area of 1.6x1.6 mm2. ((orig.))

  8. The Data Acquisition System For Multichannel Spectrometer On Base Of The NGDP Framework

    Science.gov (United States)

    Isupov, A. Yu.; Kovtun, V. E.; Foshchan, A. G.

    2010-04-01

    In present work it is proposed to implement the data acquisition system (DAQ COMBAS) for the fragment—separator COMBAS under freely distributed UNIX—like operating system (OS) FreeBSD on base of the ngdp framework, which allows to build modular distributed DAQ. As a CAMAC subsystem the camac package (DLNP JINR) is used, which encapsulates code deals with each supported crate controller into corresponding driver. Authors create the driver kh(4) for the PCI adapter of the CC02 controller (Karazin Kharkov National University). The runtime configurable r2h(1) histogram server module is supposed. The histGUI(1) client module is intended for histograms viewing as well as for r2h(1) runtime control and configurating. The histGUI(1) client will not depend on DAQ and ngdp system libraries, so can be compiled under any OS equipped by the ROOT package.

  9. A VMEbus based data acquisition system for a multi-element detector array

    International Nuclear Information System (INIS)

    A data acquisition system based on VME standard modules has been designed for MULTICS, a multi-element detector array. The system is composed of a master crate housing CPUs, Memories, Interface and Pattern boards. Up to 15 VME slave crates can be connected using the VMV vertical bus for ADC and TDC boards. A Macintosh Quadra is used as a console to provide a user friendly environment to send commands to the CPUs. Tools in the system include collecting and storing data, displaying histograms, handling all hardware parameters (high and low thresholds, rise time protection etc.). Diagnostic functions and error messages are also available to detect hardware failures or incorrect settings for the modules

  10. Data Acquisition System Based in MDAS Unit for the FEBEX Project

    International Nuclear Information System (INIS)

    The engineered barrier concept for the storage of radioactive wastes is being tested at CIEMAT facilities. This document describes the data acquisition system of one of that experiments. (Author) 2 refs

  11. 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...

  12. 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...

  13. MIDAS-W: a workstation-based incoherent scatter radar data acquisition system

    Directory of Open Access Journals (Sweden)

    J. M. Holt

    Full Text Available The Millstone Hill Incoherent Scatter Data Acquisition System (MIDAS is based on an abstract model of an incoherent scatter radar. This model is implemented in a hierarchical software system, which serves to isolate hardware and low-level software implementation details from higher levels of the system. Inherent in this is the idea that implementation details can easily be changed in response to technological advances. MIDAS is an evolutionary system, and the MIDAS hardware has, in fact, evolved while the basic software model has remained unchanged. From the earliest days of MIDAS, it was realized that some functions implemented in specialized hardware might eventually be implemented by software in a general-purpose computer. MIDAS-W is the realization of this concept. The core component of MIDAS-W is a Sun Microsystems UltraSparc 10 workstation equipped with an Ultrarad 1280 PCI bus analog to digital (A/D converter board. In the current implementation, a 2.25 MHz intermediate frequency (IF is bandpass sampled at 1 µs intervals and these samples are multicast over a high-speed Ethernet which serves as a raw data bus. A second workstation receives the samples, converts them to filtered, decimated, complex baseband samples and computes the lag-profile matrix of the decimated samples. Overall performance is approximately ten times better than the previous MIDAS system, which utilizes a custom digital filtering module and array processor based correlator. A major advantage of MIDAS-W is its flexibility. A portable, single-workstation data acquisition system can be implemented by moving the software receiver and correlator programs to the workstation with the A/D converter. When the data samples are multicast, additional data processing systems, for example for raw data recording, can be implemented simply by adding another workstation with suitable software to the high-speed network. Testing of new data processing software is also greatly

  14. MIDAS-W: a workstation-based incoherent scatter radar data acquisition system

    Science.gov (United States)

    Holt, J. M.; Erickson, P. J.; Gorczyca, A. M.; Grydeland, T.

    2000-09-01

    The Millstone Hill Incoherent Scatter Data Acquisition System (MIDAS) is based on an abstract model of an incoherent scatter radar. This model is implemented in a hierarchical software system, which serves to isolate hardware and low-level software implementation details from higher levels of the system. Inherent in this is the idea that implementation details can easily be changed in response to technological advances. MIDAS is an evolutionary system, and the MIDAS hardware has, in fact, evolved while the basic software model has remained unchanged. From the earliest days of MIDAS, it was realized that some functions implemented in specialized hardware might eventually be implemented by software in a general-purpose computer. MIDAS-W is the realization of this concept. The core component of MIDAS-W is a Sun Microsystems UltraSparc 10 workstation equipped with an Ultrarad 1280 PCI bus analog to digital (A/D) converter board. In the current implementation, a 2.25 MHz intermediate frequency (IF) is bandpass sampled at 1 µs intervals and these samples are multicast over a high-speed Ethernet which serves as a raw data bus. A second workstation receives the samples, converts them to filtered, decimated, complex baseband samples and computes the lag-profile matrix of the decimated samples. Overall performance is approximately ten times better than the previous MIDAS system, which utilizes a custom digital filtering module and array processor based correlator. A major advantage of MIDAS-W is its flexibility. A portable, single-workstation data acquisition system can be implemented by moving the software receiver and correlator programs to the workstation with the A/D converter. When the data samples are multicast, additional data processing systems, for example for raw data recording, can be implemented simply by adding another workstation with suitable software to the high-speed network. Testing of new data processing software is also greatly simplified, because a

  15. 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.

  16. 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.

  17. 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.

  18. 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.

  19. 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.

  20. DEAP-3600 Data Acquisition System

    Science.gov (United States)

    Lindner, Thomas

    2015-12-01

    DEAP-3600 is a dark matter experiment using liquid argon to detect Weakly Interacting Massive Particles (WIMPs). The DEAP-3600 Data Acquisition (DAQ) has been built using a combination of commercial and custom electronics, organized using the MIDAS framework. The DAQ system needs to suppress a high rate of background events from 39Ar beta decays. This suppression is implemented using a combination of online firmware and software-based event filtering. We will report on progress commissioning the DAQ system, as well as the development of the web-based user interface.

  1. 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.

  2. 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.

  3. Portable processor based data acquisition system for gamma-ray borehole logging

    International Nuclear Information System (INIS)

    A low power portable processor based data acquisition unit for gross and spectral gamma-ray logging was designed, developed and fabricated for in-situ quantitative measurement of radioactive elemental concentrations in boreholes, trenches, radioactive out crops and mines. The software incorporated in the system corrects for inter-channel contributions and does arithmetic calculations using count rates obtained for a preset time in potassium, uranium, thorium and total channels and displays the radio-elemental concentrations as well as uncorrected count rates in the channels on the front panel Liquid Crystal Display (LCD). Self-test diagnostic software along with appropriate audio-visual indications alleviates the operator problem normally encountered with conventional analog count-rate meters used so far. Bore-hole logging sonde with built-in multichannel analyser is being developed to acquire gamma-ray spectrums in a bore-hole for computation of radio-elemental concentrations, uranium/thorium discrimination and for study of lithology and stratigraphic correlation. This paper describes the hardware and software features developed for the system. (author). 1 ref., 2 figs

  4. 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.

  5. 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).

  6. 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.

  7. 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.

  8. 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.

  9. 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...

  10. A microcomputer-based data acquisition system for diagnostic monitoring and control of high-speed electric motors

    OpenAIRE

    Moyers, Kevin Keith

    1987-01-01

    A microcomputer-based data acquisition and control system was designed for the diagnostic monitoring and control of high-speed electric motors. The system was utilized in high-speed bearing life-testing, using an electric motor as a test vehicle. Bearing vibration and outer race temperature were continuously monitored for each ball bearing in the motor. In addition, the stator winding and motor casing temperature were monitored. The monitoring system was successful i...

  11. Computer-based data acquisition system in the Large Coil Test Facility

    International Nuclear Information System (INIS)

    The utilization of computers for data acquisition and control is of paramount importance on large-scale fusion experiments because they feature the ability to acquire data from a large number of sensors at various sample rates and provide for flexible data interpretation, presentation, reduction, and analysis. In the Large Coil Test Facility (LCTF) a Digital Equipment Corporation (DEC) PDP-11/60 host computer with the DEC RSX-11M operating system coordinates the activities of five DEC LSI-11/23 front-end processors (FEPs) via direct memory access (DMA) communication links. This provides host control of scheduled data acquisition and FEP event-triggered data collection tasks. Four of the five FEPs have no operating system

  12. Distributed mass data acquisition system based on PCs and windows NT for LHD fusion plasma experiment

    International Nuclear Information System (INIS)

    A new data acquisition and management system has been developed for the LHD experiment. It has the capability to process 100 MB - 1 GB raw data within a few tens seconds after every plasma discharge. It employs wholly distributed and loosely-tied parallel tasking structure through a fast network, and the cluster of the distributed database severs seems to be a virtual macro-machine as a whole. A PC/Windows NT computer is installed for each diagnostics data acquisition of about 30 kinds, and it controls CAMAC digitizers through the optical SCSI extenders. The diagnostic timing system consists of some kinds of VME modules that are installed to remotely control the diagnostic devices in real-time. They can, as a whole system, distribute the synchronous sampling clocks and programmable triggers for measurement digitizers. The data retrieving terminals can access database as application service clients, and are functionally separated from the data acquisition severs by way of the switching Ethernet. (author)

  13. Multi spectral scaling data acquisition system

    International Nuclear Information System (INIS)

    In nuclear spectroscopy applications, it is often desired to acquire data at high rate with high resolution. With the availability of low cost computers, it is possible to make a powerful data acquisition system with minimum hardware and software development, by designing a PC plug-in acquisition board. But in using the PC processor for data acquisition, the PC can not be used as a multitasking node. Keeping this in view, PC plug-in acquisition boards with on-board processor find tremendous applications. Transputer based data acquisition board has been designed which can be configured as a high count rate pulse height MCA or as a Multi Spectral Scaler. Multi Spectral Scaling (MSS) is a new technique, in which multiple spectra are acquired in small time frames and are then analyzed. This paper describes the details of this multi spectral scaling data acquisition system. 2 figs

  14. 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...

  15. 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.

  16. Interactive Knowledge Acquisition in Case Based Reasoning

    OpenAIRE

    Cordier, Amélie; Fuchs, Béatrice; Lieber, Jean; Mille, Alain

    2007-01-01

    International audience In Case Based Reasoning (CBR), knowledge acquisition plays an important role as it allows to progressively improve the system's competencies. One of the approaches of knowledge acquisition consists in performing it while the system is used to solve a problem. An advantage of this strategy is that it is not to constraining for the expert: the system exploits its interactions to acquire pieces of knowledge it needs to solve the current problem and takes the opportunity...

  17. 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)...

  18. 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…

  19. Windows-based acquisition and image reconstruction for a multi-element imaging system

    International Nuclear Information System (INIS)

    A system has been developed for acquiring data from a multi-element gamma ray imaging device. Data is acquired and stored in a flexible list mode format, which allows all necessary analyses and hardware diagnostics to be performed in one application. This system is currently used with a Compton scatter camera for detector calibration, data collection, count rate display for individual elements, histogram display, and image reconstruction and display. The software is implemented on a personal computer with a 33 MHz 80486 processor and 8 Mb of RAM under Microsoft Windows copyright Version 3.1. The maximum acquisition rate of the system is 8,000 counts per second. The system allows other applications to operate while it is acquiring data and has been written to easily accommodate additional analysis tools and different imaging systems

  20. Development of data acquisition system for small-scale industrial CT based on USB2.0

    International Nuclear Information System (INIS)

    In order to meet the requirements of the small-scale industrial CT of small size, needing small quantities of detector, in short-transmission distance, it designs a kind of data acquisition system based on a small interval detector, FPGA and USB2.0. The system pick X-CARD 0.2-256G as the detector chip. FPGA is the master chip, which controls the timing of data-collecting-block and detecting-block, storages the data, then sends it to host PC through the USB interface chip EZ-FX2LP CY7C68013A for image reconstruction. The system has been verified by experiment, and the results show that the USB transfer speed can reach 33.2 MB/s. The system satisfies the requirements of data acquisition for small-scale industrial CT. (authors)

  1. System Definition-Enabled Acquisition (SDEA)'A Concept for Defining Requirements for Applying Model-Based Systems Engineering (MBSE) to the Acquisition of DoD Complex Systems

    OpenAIRE

    Paul Montgomery; Ron Carlson; John Quartuccio

    2012-01-01

    Proceedings Paper (for Acquisition Research Program) The complexity of designing and acquiring weapons systems continues to increase due to highly integrated system architectures, rapid technology evolution, and emergence of highly diverse set of missions. The imperatives of system-of-systems integration and interoperability further complicate the system acquisition process. These challenges continue to frustrate completing the acquisition of systems within time and budget goals. The acqui...

  2. 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...

  3. A USB-2 based portable data acquisition system for detector development and nuclear research

    Energy Technology Data Exchange (ETDEWEB)

    Jiang Hao; Ojaruega, M. [Department of Physics, University of Michigan, Ann Arbor, MI 48109 (United States); Becchetti, F.D., E-mail: fdb@umich.edu [Department of Physics, University of Michigan, Ann Arbor, MI 48109 (United States); Griffin, H.C.; Torres-Isea, R.O. [Department of Physics, University of Michigan, Ann Arbor, MI 48109 (United States)

    2011-10-01

    A highly portable high-speed CAMAC data acquisition system has been developed using Kmax software (Sparrow, Inc.) for Macintosh laptop and tower computers. It uses a USB-2 interface to the CAMAC crate controller with custom-written software drivers. Kmax permits 2D parameter gating and specific algorithms have been developed to facilitate the rapid evaluation of various multi-element nuclear detectors for energy and time-of-flight measurements. This includes tests using neutrons from {sup 252}Cf and a 2.5 MeV neutron generator as well as standard gamma calibration sources such as {sup 60}Co and {sup 137}Cs. In addition, the system has been used to measure gamma-gamma coincidences over extended time periods using radioactive sources (e.g., Ra-228, Pa-233, Np-237, and Am-243).

  4. Summary of control and data acquisition systems for Nova based inertial confinement studies

    International Nuclear Information System (INIS)

    The Nova Laser has completed its first year of operation. During this period, emphasis has been placed on activation of the facility and of the numerous target and beam diagnostics. Two separate target chambers are in use. Nova operation is separated into two broad functions: laser operations and experiments. The operations group provides the laser system control, operation and data acquisition and the experiments group provides experiment definition, diagnostic instrumentation and overall data processing. This paper reports on the overall Operations side. VAX 11/780 computers are used to set up diagnostic operating parameters and collect data recorded by the CAMAC and CCD modules. These data are delivered in files by electronic link to the laser experiments and analysis facility (LEAF) VAX 11/785 of the experiments group for processing. Film data are digitized at LEAF and the film data files also processed on the LEAF VAX

  5. 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.

  6. Data acquisition on a VME/68000 system

    International Nuclear Information System (INIS)

    A data acquisition system for correlated or independent events handling has been designed. This system is based on VME boards and 68000 processors. The software include data taking, on line sort and storage on magnetic tape. A driver has been written under the UNIX operating system for a high graphic resolution VME board, this implementation was provided as an off-line facility. (author)

  7. A Scaler-Based Data Acquisition System for Measuring Parity Violation Asymmetry in Deep Inelastic Scattering

    CERN Document Server

    Subedi, Ramesh; Pan, Kai; Deng, Xiaoyan; Michaels, Robert; Reimer, Paul E; Shahinyan, Albert; Wojtsekhowski, Bogdan; Zheng, Xiaochao

    2013-01-01

    An experiment that measured the parity violating asymmetries in deep inelastic scattering was completed at the Thomas Jefferson National Accelerator Facility in experimental Hall A. From these asymmetries, a combination of the quark weak axial charge could be extracted with a factor of five improvement in precision over world data. To achieve this, asymmetries at the $10^{-4}$ level needed to be measured at event rates up to 500 kHz and the high pion background typical to deep inelastic scattering experiments needed to be rejected efficiently. A specialized data acquisition (DAQ) system with intrinsic particle identification (PID) was successfully developed and used: The pion contamination in the electron samples was controlled at the order of $2\\times 10^{-4}$ or below with an electron efficiency of higher than 91% throughout the production period of the experiment, the systematic uncertainty in the measured asymmetry due to DAQ deadtime was below 0.2%, and the statistical quality of the asymmetry measuremen...

  8. 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.

  9. 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...

  10. Models, methods and software for distributed knowledge acquisition for the automated construction of integrated expert systems knowledge bases

    International Nuclear Information System (INIS)

    Based on an analysis of existing models, methods and means of acquiring knowledge, a base method of automated knowledge acquisition has been chosen. On the base of this method, a new approach to integrate information acquired from knowledge sources of different typologies has been proposed, and the concept of a distributed knowledge acquisition with the aim of computerized formation of the most complete and consistent models of problem areas has been introduced. An original algorithm for distributed knowledge acquisition from databases, based on the construction of binary decision trees has been developed

  11. 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 ...

  12. Knowledge acquisition from natural language for expert systems based on classification problem-solving methods

    Science.gov (United States)

    Gomez, Fernando

    1989-01-01

    It is shown how certain kinds of domain independent expert systems based on classification problem-solving methods can be constructed directly from natural language descriptions by a human expert. The expert knowledge is not translated into production rules. Rather, it is mapped into conceptual structures which are integrated into long-term memory (LTM). The resulting system is one in which problem-solving, retrieval and memory organization are integrated processes. In other words, the same algorithm and knowledge representation structures are shared by these processes. As a result of this, the system can answer questions, solve problems or reorganize LTM.

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

    Energy Technology Data Exchange (ETDEWEB)

    Schmidt, S., E-mail: s1376684@stud.uni-frankfurt.de [Goethe University, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main (Germany); Heftrich, T.; Glorius, J. [Goethe University, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main (Germany); Hampel, G. [Johannes Gutenberg University, Saarstrasse 21, 55122 Mainz (Germany); Plag, R. [GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt (Germany); Goethe University, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main (Germany); Reifarth, R.; Slavkovská, Z.; Sonnabend, K. [Goethe University, Max-von-Laue-Strasse 1, 60438 Frankfurt am Main (Germany); Stieghorst, C.; Wiehl, N.; Zauner, S. [Johannes Gutenberg University, Saarstrasse 21, 55122 Mainz (Germany)

    2014-12-21

    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{sub 2}CO{sub 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 {sup 24}Na line.

  14. Seizure onset detection based on a Uni- or multi-modal intelligent seizure acquisition (UISA/MISA) system.

    Science.gov (United States)

    Conradsen, Isa; Beniczky, Sandor; Wolf, Peter; Henriksen, Jonas; Sams, Thomas; Sorensen, Helge B D

    2010-01-01

    An automatic Uni- or Multi-modal Intelligent Seizure Acquisition (UISA/MISA) system is highly applicable for onset detection of epileptic seizures based on motion data. The modalities used are surface electromyography (sEMG), acceleration (ACC) and angular velocity (ANG). The new proposed automatic algorithm on motion data is extracting features as "log-sum" measures of discrete wavelet components. Classification into the two groups "seizure" versus "non-seizure" is made based on the support vector machine (SVM) algorithm. The algorithm performs with a sensitivity of 91-100%, a median latency of 1 second and a specificity of 100% on multi-modal data from five healthy subjects simulating seizures. The uni-modal algorithm based on sEMG data from the subjects and patients performs satisfactorily in some cases. As expected, our results clearly show superiority of the multi-modal approach, as compared with the uni-modal one. PMID:21096611

  15. Design of FPGA based high-speed data acquisition and real-time data processing system on J-TEXT tokamak

    International Nuclear Information System (INIS)

    Highlights: • It is a data acquisition system for polarimeter–interferometer diagnostic on J-TEXT tokamak based on FPGA and PXIe devices. • The system provides a powerful data acquisition and real-time data processing performance. • Users can implement different data processing applications on the FPGA in a short time. • This system supports EPICS and has been integrated into the J-TEXT CODAC system. - Abstract: Tokamak experiment requires high-speed data acquisition and processing systems. In traditional data acquisition system, the sampling rate, channel numbers and processing speed are limited by bus throughput and CPU speed. This paper presents a data acquisition and processing system based on FPGA. The data can be processed in real-time before it is passed to the CPU. It provides processing ability for more channels with higher sampling rates than the traditional data acquisition system while ensuring deterministic real-time performance. A working prototype is developed for the newly built polarimeter–interferometer diagnostic system on the Joint Texas Experimental Tokamak (J-TEXT). It provides 16 channels with 120 MHz maximum sampling rate and 16 bit resolution. The onboard FPGA is able to calculate the plasma electron density and Faraday rotation angel. A RAID 5 storage device is adopted providing 700 MB/s read–write speed to buffer the data to the hard disk continuously for better performance

  16. 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 ...

  17. 基于Labview多数据采集系统设计%Multi-data Acquisition System Based on Labview

    Institute of Scientific and Technical Information of China (English)

    陈茂骁; 焦向东; 朱加雷

    2012-01-01

    在局部干法水下焊接中,排水装置内部的温度、湿度和压力数值及其变化表征着排水过程稳定性和排水效果,对水下焊接稳定性和焊接质量的影响很大.基于Labview8.2和DAQmx8.3软件平台,采用数据采集卡、接线盒和传感检测器件,通过程序设计搭建了气室式局部干法水下焊接数据采集系统,实现了温度、湿度和压力的多数据同步采集和实时显示,经实际排水实验,证明了系统的可靠性.%With the method of local dry underwater welding, the values and the changes of temperature, humidity and pressure in the chamber have great effects on the stableness of the welding and quality of the result, which also indicates the stability of the process and the result of the drainage experiment. Based on Labview 8. 2 and DAQmx 8. 3, the software of National Instruments Corporation, using data acquisition card, connector block and sensors, the data-acquisition system is designed. It can be used for multi-data synchronous acquisition and real-time data display of temperature, humidity and pressure. The dependability of the system is verified by drainage experiments.

  18. Aerial robotic data acquisition system

    International Nuclear Information System (INIS)

    A small unmanned aerial vehicle (UAV) equipped with sensors for physical and chemical measurements of remote environments, is described. A miniature helicopter airframe is used as a platform for sensor testing and development. The sensor output is integrated with the flight control system for real-time, interactive, data acquisition and analysis. Pre programmed flight missions will be flown with several sensors to demonstrate the cost-effective surveillance capabilities of this new technology. (author) 10 refs

  19. Aerial robotic data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    Hofstetter, K.J.; Hayes, D.W.; Pendergast, M.M. [Westinghouse Savannah River Co., Aiken, SC (United States); Corban, J.E. [Guided Systems Technologies, Atlanta, GA (United States)

    1993-12-31

    A small, unmanned aerial vehicle (UAV), equipped with sensors for physical and chemical measurements of remote environments, is described. A miniature helicopter airframe is used as a platform for sensor testing and development. The sensor output is integrated with the flight control system for real-time, interactive, data acquisition and analysis. Pre-programmed flight missions will be flown with several sensors to demonstrate the cost-effective surveillance capabilities of this new technology.

  20. BioWatch - a wrist watch based signal acquisition system for physiological signals including blood pressure.

    Science.gov (United States)

    Thomas, Simi Susan; Nathan, Viswam; Chengzhi Zong; Akinbola, Ebunoluwa; Aroul, Antoine Lourdes Praveen; Philipose, Lijoy; Soundarapandian, Karthikeyan; Xiangrong Shi; Jafari, Roozbeh

    2014-01-01

    A wrist watch based system, which can measure electrocardiogram (ECG) and photoplethysmogram (PPG), is presented in this work. By using both ECG and PPG we also measure pulse transit time (PTT), which studies show to correlate well with blood pressure (BP). The system is also capable of monitoring heart rate using either ECG or PPG and can monitor blood oxygenation by easily replacing the PPG sensors with a different set. In this work, we investigate methods to train a fitting function to convert a PTT measurement to its corresponding systolic BP. We also validate measurements on different postures and show the value of calibrating the device for each posture. This system, called BioWatch, can potentially facilitate continuous and ubiquitous monitoring of ECG, PPG, heart rate, blood oxygenation and BP. PMID:25570444

  1. Sustaining an Acquisition-based Growth Strategy

    DEFF Research Database (Denmark)

    Henningsson, Stefan; Toppenberg, Gustav; Shanks, Graeme

    Value creating acquisitions are a major challenge for many firms. Our case study of Cisco Systems shows that an advanced Enterprise Architecture (EA) capability can contribute to the acquisition process through a) preparing the acquirer to become ‘acquisition ready’, b) identifying resource...... 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...

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

    Energy Technology Data Exchange (ETDEWEB)

    Bettiol, A.A. [Centre for Ion Beam Applications, Department of Physics, National University of Singapore, Blk S7 2 Science Dr. 3, Singapore 117542 (Singapore)], E-mail: phybaa@nus.edu.sg; Udalagama, C.; Watt, F. [Centre for Ion Beam Applications, Department of Physics, National University of Singapore, Blk S7 2 Science Dr. 3, Singapore 117542 (Singapore)

    2009-06-15

    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. 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.

  4. 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.

  5. Development of the fast BPM data acquisition system using windows oscilloscope-based EPICS IOC

    International Nuclear Information System (INIS)

    The KEK Linac is a 600-m-long injector, which provides the beams for the four independent rings (KEKB e-/e+, PF and PF-AR). The non-destructive beam position monitor (BPM) is indispensable diagnostic tool for the long-term stable beam operation. In the KEK Linac, approximately one hundred BPMs with the four strip-line type electrodes are utilized for the beam orbit measurement. The orbit data is used for the orbit and energy feedback loops. Towards the simultaneous top-up injection of KEKB and PF, the Linac has been upgraded for aiming the fast beam-mode switching operation. We developed a new fast BPM DAQ system using a Windows-based digital oscilloscope since the 50 Hz beam position measurement is strongly required for the fast beam-mode switching operation. In this paper, we will present the system description of the new BPM DAQ system and the result of its performance test in detail. (author)

  6. 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 ...

  7. Embedded Linux platform for data acquisition systems

    International Nuclear Information System (INIS)

    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

  8. 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.

  9. Accelerator optimization using a network control and acquisition system

    International Nuclear Information System (INIS)

    Accelerator optimization requires detailed study of many parameters, indicating the need for remote control and automated data acquisition systems. A control and data acquisition system based on a network of commodity PCs and applications with standards based inter-application communication is being built for the l'OASIS accelerator facility. This system allows synchronous acquisition of data at high (> 1 Hz) rates and remote control of the accelerator at low cost, allowing detailed study of the acceleration process

  10. The ALICE data acquisition system

    Science.gov (United States)

    Carena, F.; Carena, W.; 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.

    2014-03-01

    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 a presentation of all the major components of the systems, as currently realized. We also report on the performance achieved during the first period of data taking (from 2009 to 2013) often exceeding those specified in the DAQ Technical Design Report.

  11. The ALICE data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    Carena, F.; Carena, W.; Chapeland, S.; Chibante Barroso, V.; Costa, F. [European Organization for Nuclear Research (CERN), Geneva 23 (Switzerland); Dénes, E. [Research Institute for Particle and Nuclear Physics, Wigner Research Center, Budapest (Hungary); Divià, R.; Fuchs, U. [European Organization for Nuclear Research (CERN), Geneva 23 (Switzerland); Grigore, A. [European Organization for Nuclear Research (CERN), Geneva 23 (Switzerland); Politehnica Univesity of Bucharest, Bucharest (Romania); Kiss, T. [Cerntech Ltd., Budapest (Hungary); Simonetti, G. [Dipartimento Interateneo di Fisica ‘M. Merlin’, Bari (Italy); Soós, C.; Telesca, A.; Vande Vyvre, P. [European Organization for Nuclear Research (CERN), Geneva 23 (Switzerland); Haller, B. von, E-mail: bvonhall@cern.ch [European Organization for Nuclear Research (CERN), Geneva 23 (Switzerland)

    2014-03-21

    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 a presentation of all the major components of the systems, as currently realized. We also report on the performance achieved during the first period of data taking (from 2009 to 2013) often exceeding those specified in the DAQ Technical Design Report.

  12. Development of a new seismic-data acquisition station based on system-on-a-programmable-chip technology

    OpenAIRE

    Zhang Qi-sheng; Deng Ming; Guo Jian; Luo Wei-bing; Wang Qi; Feng Yong-qiang

    2013-01-01

    There has been considerable development of seismic detectors over the last 80 years. However, there is still a need to further develop new earthquake exploration and data acquisition systems with high precision. In particular, for China to keep up with the latest technology of these systems, it is important to be involved in the research and development, instead of importing systems that soon fall behind the latest technology. In this study, the features of system-on-a-programmable-chip (SoPC...

  13. Data acquisition and test system software

    Energy Technology Data Exchange (ETDEWEB)

    Bourgeois, N.A. Jr.

    1979-03-01

    Sandia Laboratories has been assigned the task by the Base and Installation Security Systems (BISS) Program Office to develop various aspects of perimeter security systems. One part of this effort involves the development of advanced signal processing techniques to reduce the false and nuisance alarms from sensor systems while improving the probability of intrusion detection. The need existed for both data acquisition hardware and software. Also, the hardware is used to implement and test the signal processing algorithms in real time. The hardware developed for this signal processing task is the Data Acquisition and Test System (DATS). The programs developed for use on DATS are described. The descriptions are taken directly from the documentation included within the source programs themselves.

  14. 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.

  15. 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.

  16. 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...

  17. Development of Precision-Agriculture Data Acquisition System and Xilinx ChipScope Pro Logic Analyzer based Monitoring

    Directory of Open Access Journals (Sweden)

    S.R. Patil 1

    2015-09-01

    Full Text Available The research paper focuses on the development of a data acquisition system for precision-agriculture by sensing physical parameters; associated with the farm-soil. It requires different modules to be deployed in a system to perform data acquisition process over multiple parameters. However, the prototype developed in this research work deals with an embedded system comprising the less chip-count and consequently reduce overall power utilization. The analogue multiplexer routes electrical signals produced by farm-parameter sensors. Such signals were transformed into their digital equivalents by means of a 12-bit serial Analogue to Digital Converter (ADC; which was driven by the Xilinx Field Programmable Gate Array (FPGA. The research work deals with a standardized real-time hardware-signal monitoring system using the Xilinx ChipScope Pro Logic Analyzer.

  18. 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.)

  19. The BaBar Data Acquisition System

    CERN Document Server

    Scott, I; Grosso, P; Huffer, M E; O'Grady, C; Russell, J J

    1999-01-01

    The BaBar experiment at the Stanford Linear Accelerator Center is designed to perform a search for CP violation by ana-lyzing the decays of a very large sample of B and B(Bar) mesons produced at the high luminosity PEP-II accelerator. The data acquisition system must cope with a sustained high event rate, while supporting real time feature extraction and data compression with minimal dead time. The BaBar data acquisition system is based around a common VME interface to the electronics read-out of the separate detec-tor subsystems. Data from the front end electronics is read into commercial VME processors via a custom "Personality Card" and PCI interface. The commercial CPUs run the Tornado operating system to provide a platform for detector subsystem code to perform the necessary data processing. The data is read out via a non-blocking network switch to a farm of commercial UNIX processors. The current implementation of the BaBar data acquisition sys-tem has been shown to sustain a Level 1 trigger rate of 1.3...

  20. 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.

  1. 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.

  2. 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.

  3. 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.

  4. Case Base Mining for Adaptation Knowledge Acquisition

    CERN Document Server

    D'Aquin, Mathieu; Lafrogne, Sandrine; Lieber, Jean; Napoli, Amedeo; Szathmary, Laszlo

    2007-01-01

    In case-based reasoning, the adaptation of a source case in order to solve the target problem is at the same time crucial and difficult to implement. The reason for this difficulty is that, in general, adaptation strongly depends on domain-dependent knowledge. This fact motivates research on adaptation knowledge acquisition (AKA). This paper presents an approach to AKA based on the principles and techniques of knowledge discovery from databases and data-mining. It is implemented in CABAMAKA, a system that explores the variations within the case base to elicit adaptation knowledge. This system has been successfully tested in an application of case-based reasoning to decision support in the domain of breast cancer treatment.

  5. The DECam data acquisition and control system

    Science.gov (United States)

    Honscheid, K.; Eiting, J.; Elliott, A.; Annis, J.; Bonati, M.; Buckley-Geer, E.; Castander, F.; da Costa, L.; Haney, M.; Hanlon, W.; Karliner, I.; Kuehn, K.; Kuhlmann, S.; Marshall, S.; Meyer, M.; Neilsen, E.; Ogando, R.; Roodman, A.; Schalk, T.; Schumacher, G.; Selen, M.; Serrano, S.; Thaler, J.; Wester, W.

    2010-07-01

    In this paper we describe the data acquisition and control system of the Dark Energy Camera (DECam), which will be the primary instrument used in the Dark Energy Survey (DES). DES is a high precision multibandpath wide area survey of 5000 square degrees of the southern sky. DECam currently under construction at Fermilab will be a 3 square degree mosaic camera mounted at the prime focus of the Blanco 4m telescope at the Cerro-Tololo International Observatory (CTIO). The DECam data acquisition system (SISPI) is implemented as a distributed multi-processor system with a software architecture built on the Client-Server and Publish-Subscribe design patterns. The underlying message passing protocol is based on PYRO, a powerful distributed object technology system written entirely in Python. A distributed shared variable system was added to support exchange of telemetry data and other information between different components of the system. In this paper we discuss the SISPI infrastructure software, the image pipeline, the observer interface and quality monitoring system, and the instrument control system.

  6. 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.

  7. Knowledge acquisition for autonomous systems

    Science.gov (United States)

    Lum, Henry; Heer, Ewald

    1988-01-01

    Knowledge-based capabilities for autonomous aerospace systems, such as the NASA Space Station, must encompass conflict-resolution functions comparable to those of human operators, with all elements of the system working toward system goals in a concurrent, asynchronous-but-coordinated fashion. Knowledge extracted from a design database will support robotic systems by furnishing geometric, structural, and causal descriptions required for repair, disassembly, and assembly. The factual knowledge for these databases will be obtained from a master database through a technical management information system, and it will in many cases have to be augmented by domain-specific heuristic knowledge acquired from domain experts.

  8. The Debugging and Development of KODAQ Data Acquisition System

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    KODAQ (Kakuken on-line data acquisition system) data acquisition system was introduced from Japan on Dec., 2000. It is a multi-parameter DAQ system with the advantage of simplestructure, convenient use, stable running and cheap price. At present, lots of institute and university are using the system in Japan.KODAQ system follows the CAMAC standard, is based on PC and CAMAC crate controller,

  9. 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

  10. A marine meteorological data acquisition system

    Digital Repository Service at National Institute of Oceanography (India)

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

    A marine meteorological data acquisition system has been developed for long term unattended measurements at remote coastal sites, ocean surface platforms and for use on board research vessels. The system has an open and modular configuration...

  11. Easy-handling spectrum-management on-line system MMCU for the μ-VAX based data acquisition system in the SF cyclotron facility

    International Nuclear Information System (INIS)

    An easy-handling spectrum-management system for both on-line and off-line analysis has been developed. This system 'Man Machine Communication Utility (MMCU)' is aimed to unify the data acquisition system of INS, CYRIC (Tohoku Univ.) and RIKEN. This system has been successfully tested in a nuclear astrophysical experiment at INS. (author)

  12. LHC beam instrumentation detectors and acquisition systems

    International Nuclear Information System (INIS)

    An overview of some of the detectors and acquisition systems being developed for measuring and controlling beam parameters in the LHC. The two largest systems concern the measurement of beam position, with over 1000 monitors, and beam loss, with over 3000 monitors. For the beam position system a novel wide band time normaliser has been developed to allow bunch-by-bunch 40MHz acquisitions with a dynamic range greater than 30dB and an overall linearity of better than 1%. Also mentioned will be the acquisition system for the fast beam current transformers and the development of CdTe detectors for luminosity monitoring. [author

  13. ZigBee心电信号采集系统%Design of ECG Acquisition System Based on Zigbee

    Institute of Scientific and Technical Information of China (English)

    宋立新; 姜思刚; 周蕾; 李鸿锦; 赵亮

    2012-01-01

    In order to solve the problem of detecting ECG in a form of online, dynamic and wireless, we designed a new type of ECG acquisition system using ZigBee wireless technology. In the system, Sunplus SPCE061 16bit MCU was used as the ECG acquisitions core control components, and the UBEC UZ2400 served for the Zig-bee communication between acquisition node and monitor node. Meanwhile, in order to improve the on line monitoring transmission rate, we designed a simple ECG data compression algorithm, and an ECG monitoring interface of the center monitoring node by means of VC ++ . This system could realize multi-node' s dynamic monitoring and could draw ECG and date analysis on the ECG interface.%针对心电信号在线、动态和无线监测问题,采用ZigBee无线传输技术,设计了一种新型的心电信号采集系统.该系统以凌阳SPCE061十六位微处理器作为系统的核心采集控制器件,以UBEC公司的UZ2400射频芯片实现采集节点与监控节点间的ZigBee通信,同时为了提高多节点在线监测传输速率,设计了简单的心电数据压缩算法,利用VC++设计了中心监控节点的心电监测界面,整个系统可实现多节点的动态监测,并且能够在监测界面上进行心电波形的绘制及其数据分析.

  14. 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.

  15. Critiquing Human Judgment Using Knowledge-Acquisition Systems

    OpenAIRE

    Silverman, Barry G.

    1990-01-01

    Automated knowledge-acquisition systems have focused on embedding a cognitive model of a key knowledge worker in their software that allows the system to acquire a knowledge base by interviewing domain experts just as the knowledge worker would. Two sets of research questions arise: (1) What theories, strategies, and approaches will let the modeling process be facilitated; accelerated; and, possibly, automated? If automated knowledge-acquisition systems reduce the bottleneck associated with a...

  16. 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...

  17. 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.

  18. The DISTO data acquisition system at SATURNE

    International Nuclear Information System (INIS)

    The DISTO collaboration has built a large-acceptance magnetic spectrometer designed to provide broad kinematic coverage of multiparticle 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 rvec pp → pK+rvec Y (Y = Λ, Σ0 or Y*) reaction and vector meson production (ψ, ω and ρ) 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 workstations are connected to the VME CPUs through a fast parallel bus and the Local Area Network. They analyze a subset of events for on-line monitoring. The data acquisition system is able to read and record 3,500 ev/burst in the present configuration with a dead time of 15%

  19. 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...

  20. DABASCO Experiment Data Acquisition and Control System

    International Nuclear Information System (INIS)

    DABASCO experiment wants to study the thermohydraulic phenomena produced into the containment area for a severe accident in a nuclear power facility. This document describes the characteristics of the data acquisition and control system used in the experiment. The main elements of the system were a data acquisition board, PCI-MIO-16E-4, and an application written with LaB View. (Author) 5 refs

  1. Rotor fatigue monitoring data acquisition system

    Science.gov (United States)

    Smith, Scott M.

    1993-01-01

    The 40 by 80 Foot Wind Tunnel of the National Full Scale Aerodynamics Complex (NFAC) had a requirement to monitor rotor fatigue during a test. This test subjected various rotor components to stress levels higher than their structural fatigue limits. A data acquisition system was developed to monitor the cumulative fatigue damage of rotor components using National Instruments hardware and LabVIEW software. A full description of the data acquisition system including its configuration and salient features, is presented in this paper.

  2. Architecture of an acquisition system-multiprocessors

    International Nuclear Information System (INIS)

    To follow the huge increasing of concerned parameters in nuclear detection systems, acquisition systems become bigger and have to present very good rapidity performance. At Ganil, four detection systems have been set in Nautilus reaction chamber, that lead to experiment configurations with 700 parameters to process. In front of present acquisition system limitation, a device more relevant to lecture of a large number of channels show off necessary. Functionalities already operating in other systems and hardware already used have been chosen; specific technical solutions were aldo developed to use the most recent techniques and to take in account the four detection system structure of the device

  3. 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. PMID:23277988

  4. 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.

  5. 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.

  6. Optical image acquisition system for colony analysis

    Science.gov (United States)

    Wang, Weixing; Jin, Wenbiao

    2006-02-01

    For counting of both colonies and plaques, there is a large number of applications including food, dairy, beverages, hygiene, environmental monitoring, water, toxicology, sterility testing, AMES testing, pharmaceuticals, paints, sterile fluids and fungal contamination. Recently, many researchers and developers have made efforts for this kind of systems. By investigation, some existing systems have some problems since they belong to a new technology product. One of the main problems is image acquisition. In order to acquire colony images with good quality, an illumination box was constructed as: the box includes front lightning and back lightning, which can be selected by users based on properties of colony dishes. With the illumination box, lightning can be uniform; colony dish can be put in the same place every time, which make image processing easy. A digital camera in the top of the box connected to a PC computer with a USB cable, all the camera functions are controlled by the computer.

  7. MADOCA II data acquisition and storage system

    International Nuclear Information System (INIS)

    In SPring-8, we are constructing MADOCA II, next generation accelerator control framework. It will be installed in the spring of 2014. We describe the part of the data acquisition and the storage system of MADOCA II. MADOCA was built on the bases of ONC-RPC for communication between processes and a relational database for data management. We designed the new framework with the long experience on MADOCA. We employ Zeromq messages packed by Messagepack for communication. NoSQL databases, Redis and Apache Cassandra, store log data. We obtained a high performance, highly reliable, well scalable and flexible data management system. In this paper, we will discuss requirements, design, implementation and the result of the long run test. (author)

  8. 基于CAN的多通道数据采集系统的设计%Design of a Multi-Channel Data Acquisition System Based on CAN

    Institute of Scientific and Technical Information of China (English)

    赵海生; 胥效文

    2012-01-01

    提出了一种基于CAN总线,应用于航空发动机动态测试的多通道数据采集系统的设计方案.完成了对各传感器输出信号及电源信号的调理、采集、分析处理及上传,并对系统进行了非线性误差标定.给出了数据采集系统各模块的设计思想及系统软件设计流程.试验结果表明,该多通道数据采集系统具有抗干扰性强、采集精度高、接口灵活等优点,满足该型航空发动机测试系统的需求.%A CAN bus-based multi-channel data acquisition system applied in aero-engine dynamic test is proposed. Signal conditioning, acquisition, analysis, process and upload of various sensors signal and powers signal are completed in system design. Meanwhile system nonlinear error calibration is done. Detailed module design concept and software design process are presented also. The results show that the proposed multi-channel data acquisition system achieves good anti-jamming performance, high accuracy, flexible interface, and satisfies the requirements of aero-engine dynamic test.

  9. Data acquisition system for nuclear reactor environment

    International Nuclear Information System (INIS)

    We have designed an online real time data acquisition system for nuclear reactor environment monitoring. Data acquisition system has eight channels of analog signals and one channel of pulsed input signal from detectors like GM Tube, or any other similar input. Connectivity between the data acquisition system and environmental parameters monitoring computer is made through a wireless data communication link of 151 MHz/100 mW RF power and 10 km maximum communication range for remote data telemetry. Sensors used are gamma ionizing radiation sensor made from CsI:Tl scintillator, atmospheric pressure sensor with +/-0.1 mbar precision, temperature sensor with +/-l milli degree Celsius precision, relative humidity with +/-0.1RH precision, pulse counts with +/-1 count in 0-10000 Hz count rate measurement precision and +/-1 count is accumulated count measurement precision. The entire data acquisition system and wireless telemetry system is 9 V battery powered and the device is to be fitted on a wireless controlled mobile robot for scanning the nuclear reactor zone from remote. Wireless video camera has been planned for integration into the existing system on a later date for moving the robotics environmental data acquisition system beyond human vision reach. System development cost is Rs.25 Lacs and has been developed for Department of Atomic Energy, Government of India and Indian Defense use. (author)

  10. The multi-crate VME data acquisition system

    International Nuclear Information System (INIS)

    The VME (Versa Module Europe) based data acquisition (DAQ) system is being used for many nuclear physics experiments at VECC. The current version of the software supports both VME and CAMAC system. The DAQ system has been recently upgraded to support the multi-crate VME system

  11. 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.

  12. 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,...

  13. The Data Acquisition System for LZ

    International Nuclear Information System (INIS)

    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 data rate of 1,500 MB/s. During calibrations, it is estimated that only 33% of the system resources are utilized. The digital filters that are used for event selection operate with an aggregate throughput in excess of 595,000 MB/s. Event selection decisions are based on, for example, the amount of scintillation (S1) and photoluminescence S2 light, S1 and S2 hit-patterns, and total energy deposition

  14. 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.

  15. The Giga Bit Transceiver based Expandable Front-End (GEFE)—a new radiation tolerant acquisition system for beam instrumentation

    Science.gov (United States)

    Barros Marin, M.; Boccardi, A.; Donat Godichal, C.; Gonzalez, J. L.; Lefevre, T.; Levens, T.; Szuk, B.

    2016-02-01

    The Giga Bit Transceiver based Expandable Front-End (GEFE) is a multi-purpose FPGA-based radiation tolerant card. It is foreseen to be the new standard FMC carrier for digital front-end applications in the CERN BE-BI group. Its intended use ranges from fast data acquisition systems to slow control installed close to the beamlines, in a radioactive environment exposed to total ionizing doses of up to 750 Gy. This paper introduces the architecture of the GEFE, its features as well as examples of its application in different setups.

  16. The Giga Bit Transceiver based Expandable Front-End (GEFE)—a new radiation tolerant acquisition system for beam instrumentation

    International Nuclear Information System (INIS)

    The Giga Bit Transceiver based Expandable Front-End (GEFE) is a multi-purpose FPGA-based radiation tolerant card. It is foreseen to be the new standard FMC carrier for digital front-end applications in the CERN BE-BI group. Its intended use ranges from fast data acquisition systems to slow control installed close to the beamlines, in a radioactive environment exposed to total ionizing doses of up to 750 Gy. This paper introduces the architecture of the GEFE, its features as well as examples of its application in different setups

  17. Multiple-user data acquisition and analysis system

    International Nuclear Information System (INIS)

    The nuclear physics program at the Brookhaven National Laboratory High Flux Beam Reactor (HFBR) employs a pair of PDP-11 computers for the dual functions of data acquisition and analysis. The data acquisition is accomplished through CAMAC and features a microprogrammed branch driver to accommodate various experimental inputs. The acquisition computer performs the functions of multi-channel analyzers, multiscaling and time-sequenced multichannel analyzers and gamma-ray coincidence analyzers. The data analysis computer is available for rapid processing of data tapes written by the acquisition computer. The ability to accommodate many users is facilitated by separating the data acquisition and analysis functions, and allowing each user to tailor the analysis to the specific requirements of his own experiment. The system is to be upgraded soon by the introduction of a dual port disk to allow a data base to be available to each computer

  18. A scaler-based data acquisition system for measuring parity-violating asymmetry in deep inelastic scattering

    Energy Technology Data Exchange (ETDEWEB)

    Subedi, Ramesh R. [Virginia U.; Wang, Diancheng [Virginia U.; Pan, Kai [MIT; Deng, Xiaoyan [Virginu U.; Michaels, Robert W. [JLAB; Shahinyan, Albert [Yerevan Institute; Wojtsekhowski, Bogdan B. [JLAB; Zheng, Xiaochao [JLAB

    2013-10-01

    An experiment that measured the parity violating asymmetries in deep inelastic scattering was completed at the Thomas Jefferson National Accelerator Facility in experimental Hall A. From these asymmetries, a combination of the quark weak axial charge could be extracted with a factor of five improvement in precision over world data. To achieve this, asymmetries at the 10^-4 level needed to be measured at event rates up to 500 kHz and the high pion background typical to deep inelastic scattering experiments needed to be rejected efficiently. A specialized data acquisition (DAQ) system with intrinsic particle identification (PID) was successfully developed and used: The pion contamination in the electron samples was controlled at the order of 2 × 10^-4 or below with an electron efficiency of higher than 91% throughout the production period of the experiment, the systematic uncertainty in the measured asymmetry due to DAQ deadtime was below 0.2%, and the statistical quality of the asymmetry measurement agreed with the Gaussian distribution to over five orders of magnitudes. The DAQ system is presented here with an emphasis on its design scheme, the achieved PID performance, deadtime effect and the capability of measuring small asymmetries.

  19. A scaler-based data acquisition system for measuring parity-violating asymmetry in deep inelastic scattering

    Energy Technology Data Exchange (ETDEWEB)

    Subedi, R.; Wang, D. [University of Virginia, Charlottesville, VA 22904 (United States); Pan, K. [Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Deng, X. [University of Virginia, Charlottesville, VA 22904 (United States); Michaels, R. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Reimer, P.E. [Physics Division, Argonne National Laboratory, Argonne, IL 60439 (United States); Shahinyan, A. [Yerevan Physics Institute, Yerevan 0036 (Armenia); Wojtsekhowski, B. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Zheng, X., E-mail: xiaochao@jlab.org [University of Virginia, Charlottesville, VA 22904 (United States)

    2013-10-01

    An experiment that measured the parity-violating asymmetries in deep inelastic scattering was completed at the Thomas Jefferson National Accelerator Facility in experimental Hall A. From these asymmetries, a combination of the quark weak axial charge could be extracted with a factor of five improvement in precision over world data. To achieve this, asymmetries at the 10{sup −4} level needed to be measured at event rates up to 600 kHz and the high pion background typical to deep inelastic scattering experiments needed to be rejected efficiently. A specialized data acquisition (DAQ) system with intrinsic particle identification (PID) was successfully developed and used: the pion contamination in the electron samples was controlled at the order of 2×10{sup −4} or below with an electron efficiency of higher than 91% during most of the production period of the experiment, the systematic uncertainty in the measured asymmetry due to DAQ deadtime was below 0.5%, and the statistical quality of the asymmetry measurement agreed with the Gaussian distribution to over five orders of magnitudes. The DAQ system is presented here with an emphasis on its design scheme, the achieved PID performance, deadtime effect and the capability of measuring small asymmetries.

  20. A scaler-based data acquisition system for measuring parity-violating asymmetry in deep inelastic scattering

    International Nuclear Information System (INIS)

    An experiment that measured the parity-violating asymmetries in deep inelastic scattering was completed at the Thomas Jefferson National Accelerator Facility in experimental Hall A. From these asymmetries, a combination of the quark weak axial charge could be extracted with a factor of five improvement in precision over world data. To achieve this, asymmetries at the 10−4 level needed to be measured at event rates up to 600 kHz and the high pion background typical to deep inelastic scattering experiments needed to be rejected efficiently. A specialized data acquisition (DAQ) system with intrinsic particle identification (PID) was successfully developed and used: the pion contamination in the electron samples was controlled at the order of 2×10−4 or below with an electron efficiency of higher than 91% during most of the production period of the experiment, the systematic uncertainty in the measured asymmetry due to DAQ deadtime was below 0.5%, and the statistical quality of the asymmetry measurement agreed with the Gaussian distribution to over five orders of magnitudes. The DAQ system is presented here with an emphasis on its design scheme, the achieved PID performance, deadtime effect and the capability of measuring small asymmetries

  1. A scaler-based data acquisition system for measuring parity-violating asymmetry in deep inelastic scattering

    Science.gov (United States)

    Subedi, R.; Wang, D.; Pan, K.; Deng, X.; Michaels, R.; Reimer, P. E.; Shahinyan, A.; Wojtsekhowski, B.; Zheng, X.

    2013-10-01

    An experiment that measured the parity-violating asymmetries in deep inelastic scattering was completed at the Thomas Jefferson National Accelerator Facility in experimental Hall A. From these asymmetries, a combination of the quark weak axial charge could be extracted with a factor of five improvement in precision over world data. To achieve this, asymmetries at the 10-4 level needed to be measured at event rates up to 600 kHz and the high pion background typical to deep inelastic scattering experiments needed to be rejected efficiently. A specialized data acquisition (DAQ) system with intrinsic particle identification (PID) was successfully developed and used: the pion contamination in the electron samples was controlled at the order of 2×10-4 or below with an electron efficiency of higher than 91% during most of the production period of the experiment, the systematic uncertainty in the measured asymmetry due to DAQ deadtime was below 0.5%, and the statistical quality of the asymmetry measurement agreed with the Gaussian distribution to over five orders of magnitudes. The DAQ system is presented here with an emphasis on its design scheme, the achieved PID performance, deadtime effect and the capability of measuring small asymmetries.

  2. LAMPF nuclear chemistry data acquisition system

    International Nuclear Information System (INIS)

    The LAMPF Nuclear Chemistry Data Acquisition System (DAS) is designed to provide both real-time control of data acquisition and facilities for data processing for a large variety of users. It consists of a PDP-11/44 connected to a parallel CAMAC branch highway as well as to a large number of peripherals. The various types of radiation counters and spectrometers and their connections to the system will be described. Also discussed will be the various methods of connection considered and their advantages and disadvantages. The operation of the system from the standpoint of both hardware and software will be described as well as plans for the future

  3. Design of data acquisition system based on AVR microcontroller%基于AVR单片机的数据采集系统的设计

    Institute of Scientific and Technical Information of China (English)

    叶军

    2013-01-01

    介绍了基于AVR单片机的数据采集系统的硬件和软件设计。该系统分为数据采集传输和数据显示两部分。数据采集以ATMEGA328P为核心,利用该单片机进行多路数据采集。通过CH340T芯片的USB转串口的功能,实现AVR单片机与PC机间采集数据的传输。数据显示模块,通过Visual studio开发环境下的C#语言,运用.Net Framework提供的SerialPort类实现上位机采集数据的收集和显示。%The paper introduces the hardware design and the software design of a data acquisition system based on AVR Microcontroller. The whole system can be divided into data acquisition module and data display module. In data acquisition module, ATMEGA328P is used to collect data in multi-channels. In order to send the converted data to PC port, the communication between AVR microcontroller and pc is achieved by utilizing the serial port function of CH340T chip. In the data display module, data is collected by and displayed in Visual studio environment.

  4. 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。

  5. IT-based Value Creation in Serial Acquisitions

    DEFF Research Database (Denmark)

    Henningsson, Stefan; Yetton, Philip

    2013-01-01

    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......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...

  6. 基于ARM的高精度数据采集系统设计%Design of high-accuracy data acquisition system based on ARM

    Institute of Scientific and Technical Information of China (English)

    刘满仓; 雷卫宁; 王春成

    2012-01-01

    针对传统数据采集系统结构复杂,体积大,成本高的问题,设计了一种基于ARM的新型、低成本、高精度数据采集系统,并提出了该系统的设计方案.详细论述了数据采集系统的硬件实现方案、抗干扰措施及控制时序,重点分析了高精度并行A/D的工作时序.实际应用结果表明,该数据采集系统精度高,体积小,成本低,工作性能强,具有较高的实用价值和借鉴意义.%For the problems of structure complexity, big volume and high cost of traditional data acquisition systems, a low-cost and high-accuracy data acquisition system based on ARM was designed. The design scheme of the system is given. The hardware implementation scheme, anti-interference measures and control time sequence of data acquisition system are elaborated. The working time sequence of high accuracy parallel A/D is analyzed emphatically. The practical application shows that the system has the characteristics of high accuracy, small size, low cost and strong working ability, and has a high pragmatic value and a reference for the design of similar systems.

  7. EEG Acquisition System Based on MCU and Hypothesized Instrument%基于MCU与虚拟仪器的脑电信号采集系统

    Institute of Scientific and Technical Information of China (English)

    杨名龙; 刘泉; 艾青公

    2011-01-01

    针对人体表皮脑电信号特点提出了基于MCU与虚拟仪器的脑电信号采集系统.采用生物电信号前置放大电路、滤波电路、50 Hz工频陷波电路、电平抬升电路有效滤除信号噪声并放大脑电信号,同时采用MSP430 MCU高速采样技术和串口通信技术并结合LabVIEW开发上位机软件低成本地完成对脑电信号的数字化采集和实时波形显示.系统仿真和实验表明,系统能够有效地实时采集人体生物电信号,为脑机接口研究提供支持.%The EEG acquisition system is put forward based on the character of electrical signal of human scalp. The electric circuit that consists of biological signal preamplifier circuit, filter circuit, 50 Hz frequency trap circuit can effectively filter the signal noise and amplify the EEG signals. Simultaneously, the system in which the technology of highspeed sampling and serial communication based on MSP430 microcontroller and PC software developed on Lab VIEW are adopted could complete the work of digital EEG signal acquisition and real-time waveform display at low cost. The result of system circuit simulation and experiment of data acquisition test indicates that the system put forward could process human bioelectricity signal effectively in real time, and it could be a support for BCI research.

  8. 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.

  9. Treebank-based grammar acquisition for German

    OpenAIRE

    Rehbein, Ines

    2009-01-01

    Manual development of deep linguistic resources is time-consuming and costly and therefore often described as a bottleneck for traditional rule-based NLP. In my PhD thesis I present a treebank-based method for the automatic acquisition of LFG resources for German. The method automatically creates deep and rich linguistic presentations from labelled data (treebanks) and can be applied to large data sets. My research is based on and substantially extends previous work on automatically ac...

  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. Long- distance Wireless Data Acquisition System Based on Wi -Fi%基于Wi-Fi的远距离无线数据采集系统

    Institute of Scientific and Technical Information of China (English)

    吴世玉; 曾强; 赵娟; 张志杰

    2012-01-01

    传统的军用摩托车测试系统大多是存储测试系统,无法将测试数据实时地传递到远端的控制台,这给数据的读取和分析带来不便.论文设计并实现了一种基于Wi - Fi远距离无线数据采集系统.相比目前其它无线传输系统该无线采集系统具有传输速度快、距离远、抗干扰能力强、能与以太网整合等优点.在满足传输速率的前提下,通信距离可达10 km.%Most of conventional motorcycle measurement system is storage measurement system which can not transmit real - time data to remote console, so it is inconvenient to read data and analysis data . Therefore, design and implement a WiFi - based long - distance wireless acquisition system. Compared other wireless transmission systems in present this wireless acquisition system has faster transfer rate, longer distances , anti - interference ability and integration with Ethernet. Communication distance is up to 10km on condition that transmission rate is met the requirement.

  12. LabVIEW中DAQ数据采集系统设计%Design of the Data Acquisition System Based on LabVIEW DAQ

    Institute of Scientific and Technical Information of China (English)

    王平; 杨涛; 侯守全; 李广义

    2015-01-01

    The open test for rocket nozzle closure is difficult to simulate, control and measure, by using DAQ data acquisition module in LabVIEW software, the pressure rising rate can be easily simulated when the closure is opened, and this rising rate can be adjustable and measured. Based on platform of NI-cDAQ9174 chassis, digital modules NI9421, NI9472 and analog modules NI9221, NI9227, the data acquisition system including pressure signal acquisition with digital combination and analog combination, and target line voltage record has been developed, to implement pressure data acquisition and target voltage signal record when the closure of rocket nozzle is opened.%针对模拟火箭喷管堵盖打开试验难模拟、难控制、难测量等特点,采用LabVIEW软件中DAQ数据采集系统。考虑到模拟火箭喷管堵盖打开时的压力上升速率,且要求压力上升速率可调可测,提出基于NI-cDAQ9174机箱、数字量NI9421 NI9472模块和模拟量NI9221 NI9227模块的程序平台。开发了一套包含数字量组合与模拟量混合的压力信号采集、靶线电压记录的数据采集系统,最终实现了模拟火箭喷管堵盖打开时压力数据的采集与靶线电压信号的记录。

  13. 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.

  14. Data acquisition system issues for large experiments

    International Nuclear Information System (INIS)

    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. NASA Data Acquisitions System (NDAS) Software Architecture

    Science.gov (United States)

    Davis, Dawn; Duncan, Michael; Franzl, Richard; Holladay, Wendy; Marshall, Peggi; Morris, Jon; Turowski, Mark

    2012-01-01

    The NDAS Software Project is for the development of common low speed data acquisition system software to support NASA's rocket propulsion testing facilities at John C. Stennis Space Center (SSC), White Sands Test Facility (WSTF), Plum Brook Station (PBS), and Marshall Space Flight Center (MSFC).

  16. The house keeping data acquisition system in space detection

    International Nuclear Information System (INIS)

    The house keeping data acquisition system in space detection is introduced. It is based on micro-controller 80C196. The system can automatically collect the data such as the temperature, high voltage power supply and the events counter, and communication data with 1553B bus interface

  17. 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.

  18. Case Base Mining for Adaptation Knowledge Acquisition

    OpenAIRE

    D'Aquin, Mathieu; Badra, Fadi; Lafrogne, Sandrine; Lieber, Jean; Napoli, Amedeo; Szathmary, Laszlo

    2007-01-01

    International audience In case-based reasoning, the adaptation of a source case in order to solve the target problem is at the same time crucial and difficult to implement. The reason for this difficulty is that, in general, adaptation strongly depends on domain-dependent knowledge. This fact motivates research on adaptation knowledge acquisition (AKA). This paper presents an approach to AKA based on the principles and techniques of knowledge discovery from databases and data-mining. It is...

  19. Applicability of Agent-Based Technology for Acquisition, Monitoring and Process Control Systems at Real Time for Distributed Architectures

    International Nuclear Information System (INIS)

    Modern industrial plants are characterized by their large size and higher complexity of the processes involved in their operations.The real time monitoring systems of theses plants must be used a distributed architecture.Due to the pressure of competitive markets, an efficient adaptability to changes must be present in the plants.Modifications in the plants due to changes in the lay-out, the introduction of newer supervision, control and monitoring technologies must not affect the integrity of the systems.The aim of this work is give an introduction to the agent-based technology and analyze it advantage for the development of a modern monitoring system

  20. 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.

  1. Performance confirmation data acquisition system

    International Nuclear Information System (INIS)

    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

  2. Pulse Signal Data Acquisition System Based on LabVIEW%基于LabVIEW的脉象信息采集系统

    Institute of Scientific and Technical Information of China (English)

    邹建; 应苑松; 卢平; 钱波

    2011-01-01

    One kind of pulse condition information acquisition system based on LabVIEW with the function of storage and analysis was developed. For the better use of the storage and analysis function of human body' s pulse condition information, a self-made capacitive pressure sensor is used to obtain the human pulse signal, and it joins the related hardware circuit to make signal conditioned. Through the USB2004 date acquisition card gathering human pulse signal, and applying the powerful function of virtual instrument technology to construct a human pulse data acquisition system by making full use of the powerful function of LabVIEW developing platform. The system can realize the following functions such as real-time data acquisition on the human body pulse information, data storage, waveform playback, spectral analysis,pulse frequency display,warning for pulse too slow or too fast. This system put the collected pulse signal into analysis, and can effectively obtain the spectrum information which contains rich human physiological condition for medical research use,and it can provide reference data which is of great significance. The experimental results indicate the system has good stability and reliability.%为了更好地对人体脉象信息进行存储、分析,便于医学研究,利用自行研制的电容式压力传感器来获取脉象信息,设计了相关的硬件电路对信号进行调理;通过USB2004数据采集卡采集脉象信息,并借助虚拟仪器技术充分利用LabVIEW开发平台的强大功能,构建出人体脉象信息采集系统.该系统能够实现对人体脉象信息的实时数据采集、数据存储、波形回放、频谱分析、脉搏频率的显示、脉搏过缓或过速的警示等功能.通过对采集到的脉象信息进行分析,能有效获得包含人体生理状况的丰富的频谱信息,为医学研究提供极具参考价值的数据.实验结果表明,系统具有良好的可靠性和稳定性.

  3. 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.

  4. 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.

  5. 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...

  6. 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.

  7. 基于虚拟仪器的生理信号采集分析系统%Physiological signal acquisition and analysis system based on virtual instrument

    Institute of Scientific and Technical Information of China (English)

    于璐; 索永宽; 沙宪政

    2011-01-01

    Objective To build a multi-channel physiological signal acquisition and analyais system using computer hardware and software technique, and provide the methods and instruments for related medical research. Methods The system was designed based on the virtual instrument platform(software: LabVIEW 8.2; hardware: physiological signal detection and analog digital conversion circuit), utilized several key techniques that included data acquisition card configuration, implementation of data collection, display, storage and playback, and control of data acquisition with software. In the part of system expansion,Pearson correlation between the current system and the reference system was performed, which was based on the cardiovascular parameters collected from 15 healthy volunteers. Results The system was well designed to implement the acquisition and procession of all kinds of physiological signals. In addition, the system was further expanded for the recogniLion and analysis of physiological signals. The detection results between the two systems were perfectly correlated, with heart rate r = 0.959 (P <0.001), mean arterial blood pressure r = 0.976(P < 0.001). stroke volume r = 0.877(P < 0.001), stroke index r = 0.785(P < 0.001)and arterial compliance r = 0.869 (P < 0001). Conclusion It is demonstrated that the system could be applied in all kinds of physiological signal acquisition and procession, and also in aome teaching areas, such as physiological function experiments and animal physiology experiments.%目的 利用计算机软硬件技术构建多通道生理信号采集分析系统,为医学相关研究提供方法 与工具.方法 在基于虚拟仪器的软硬件半台下(软件为LabVIEW 8.2,硬件为生理信号榆测电路和模/数转换电路)对系统进行设计,利用了数据采集(DAQ)卡配置方法 、DAQ显示存储回放的实现方法 及使用软件灵活地控制数据采集等关键技术.在系统扩展部分,利

  8. Design of audio data acquisition system based on ARM and DSP%基于ARM与DSP的声频数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    周静雷; 江浩; 乔站仙

    2012-01-01

    结合1个基于ARM与DSP双核架构的声频数据采集系统的开发,介绍了ARM和DSP之间基于HPI通信的接口设计以及A/D、D/A接口设计,说明了接口工作原理及相关配置.提出了一种声频数据采集方案,利用ARM实现控制与人机交互,用DSP做信号处理,给出了数据采集的系统框图和软件流程图.该方案可充分利用DSP的McASP接口实现高精度A/D、D/A转换,利用HPI主机并行接口实现ARM与DSP之间的快速数据传输,从而实现海量声频数据流的高效、实时传输.%According to an audio data acquisition system,this paper introduces the communication interface design on the basis of HPI between ARM and DSP,and A/CD/A converter design,describes the operating principle of interfaces and relevant configuration. A method of audio data acquisition is presented, control is based on ARM, DSP takes charge of signal processing,it provides the system chart of data acquisition and software flow chart. This design scheme can take full advantage of McASP interface to achieve high-precision AD & DA converter,and HPI interface is used to realize high speed data transfer between ARM and DSP, thereby achieving efficient and real-time transmission of huge amounts of audio data stream.

  9. Microcomputer-controlled ultrasonic data acquisition system

    International Nuclear Information System (INIS)

    The large volume of ultrasonic data generated by computer-aided test procedures has necessitated the development of a mobile, high-speed data acquisition and storage system. This approach offers the decided advantage of on-site data collection and remote data processing. It also utilizes standard, commercially available ultrasonic instrumentation. This system is controlled by an Intel 8080A microprocessor. The MCS80-SDK microcomputer board was chosen, and magnetic tape is used as the storage medium. A detailed description is provided of both the hardware and software developed to interface the magnetic tape storage subsystem to Biomation 8100 and Biomation 805 waveform recorders. A boxcar integrator acquisition system is also described for use when signal averaging becomes necessary. Both assembly language and machine language listings are provided for the software

  10. Design of Diesel Engine Data Acquisition System Based on CAN Bus%基于CAN总线的柴油机数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    杨薇; 魏青; 范燕朝; 杨凤秋; 胡勇; 焦玉琴; 李晨

    2012-01-01

    设计了基于CAN总线的柴油机运行参数采集系统,以C8051F040单片机为核心,采用传感器、信号调理模块和AT45DB161存储芯片实现数据的采集与存储,阐述了系统的硬件结构和程序设计.试验表明,设计的系统可快速准确地采集柴油机各种运行参数,实现实时采集、历史数据存储,扩展方便,经济实用.%Based on CAN bus, the data acquisition system for diesel engine operating parameters was designed. Taking C8051F040 single-chip as a core, the acquisition and storage of data were realized with sensors, signal conditioning modules and AT45DB161 memory chip. The hardware structure and program design were demonstrated in detail. The result shows that the designed system can collect the operating parameters of diesel engine quickly and accurately, and realize the real-time collection and history data storage. In addition, it is easy to expand and hence convenient.

  11. Design of High-Speed Data Acquisition System Based on FPGA%一种基于FPGA的高速数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    徐萌萌; 刘晓娜; 陶灿辉; 丁力; 宋志平

    2013-01-01

    提出了一种基于FPGA的数据采集系统,并对系统的硬件电路、逻辑电路以及应用软件的设计过程作了详细的介绍.利用FPGA控制单元和USB传输模块,实现数据的高速采集、存储和传输.试验结果表明,该系统可以完成动态环境下实时数据采集、事后数据读取和处理,系统精度高、速度快、界面友好,具有较高的使用价值.%A data acquisition system based on FPGA is presented. The design process of hardware circuit, logic circuit and application software is introduced in detail. High-speed capability of data acquisition, data storage and transmission is implemented with FPGA control unit and USB transfer module. The experimental results show that this system can sample data on real time in dynamic environment and read data after reclaim, which has the advantages of high precision, high speed, friendly user interface and a high value in use.

  12. 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

    2014-01-01

    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.

  13. Wavelets for full reconfigurable ECG acquisition system

    Science.gov (United States)

    Morales, D. P.; García, A.; Castillo, E.; Meyer-Baese, U.; Palma, A. J.

    2011-06-01

    This paper presents the use of wavelet cores for a full reconfigurable electrocardiogram signal (ECG) acquisition system. The system is compound by two reconfigurable devices, a FPGA and a FPAA. The FPAA is in charge of the ECG signal acquisition, since this device is a versatile and reconfigurable analog front-end for biosignals. The FPGA is in charge of FPAA configuration, digital signal processing and information extraction such as heart beat rate and others. Wavelet analysis has become a powerful tool for ECG signal processing since it perfectly fits ECG signal shape. The use of these cores has been integrated in the LabVIEW FPGA module development tool that makes possible to employ VHDL cores within the usual LabVIEW graphical programming environment, thus freeing the designer from tedious and time consuming design of communication interfaces. This enables rapid test and graphical representation of results.

  14. Smart data acquisition system for utilities metering

    Science.gov (United States)

    Ileana, I.; Risteiu, M.; Tulbure, A.; Rusu, M.

    2009-01-01

    The paper approaches the task of automatically reading and recognition of registered data on the utility meters of the users and is a part of a more complex project of our team concerning the remote data acquisition from industrial processes. A huge amount of utility meters in our country is of mechanical type without remote acquiring facilities and as an intermediate solution we propose an intelligent optical acquisition system which will store the read values in desktop and mobile devices. The main requirements of such a system are: portability, data reading accuracy, fast processing and energy independence. The paper analyses several solutions (including Artificial Neural Networks approach) tested by our team and present the experimental results and our conclusions.

  15. Design of Data Acquisition System Based on Android%基于Android平台的数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    朱洪涛; 吴洪波; 李铮

    2013-01-01

    Using serial connection in traditional track inspection instrument reduces the range of movement of surveyor and operational flexibility,designed a handheld platform based on Bluetooth data acquisition system to achieve separation of the Upper and Lower host computer and the microcontroller and reach the purpose of wireless acquisition. The system uses Bluetooth communication technology to replace traditional wired serial mode,use mobile terminal with Android operating system which was widely used as host computer. Design the system software in the terminal, to achieve portable,mobile data collecting,and the host computer store received data in files.Test the system under actual working environment.Practice has proved that the wireless acquisition system collects data steadily,effectively and achieve wireless transmission of data.%传统数据采集系统因其上下位机采用串口连接致使测量人员移动范围与操作灵活性降低,基于此,该文设计一种基于手持平台的蓝牙数据采集系统,以实现采集过程中上下位机的无绳分离,达到无线采集的目的.系统采用蓝牙通讯协议作为通讯方案取代传统的有线串口,以时下应用广泛的Android操作系统移动终端作为上住机,并在该终端设计系统软件,实现移动、便携地进行数据采集,并将接收到的有效数据以文件方式存储.在实际工作环境下对该系统进行测试,实践证明该无线采集系统能稳定、有效地采集数据,实现测量数据无线传输.

  16. 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。

  17. Data-acquisition method for multichannel systems

    International Nuclear Information System (INIS)

    An economical method is described for data acquisition from multichannel systems such as multiwire chambers in which the channels are combined into a matrix via analog adders and analog to digital converters. An implementation for a 1024-channel system was considered. The number of channels interrogated was reduced to 127. Simulation shows that the input data may be recovered completely if not more than 10 channels have operated. Recovery performance is shown as a function of number of triggered channels in a 1024-channel systems for two groups and three groups where the numbers on the curves are the tolerances in comparing the signal amplitudes in matrix projections

  18. 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.

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

    OpenAIRE

    Adrian Iglesias-Benitez; Abel Toledano-Hernández; Dainelys Toledo-Enriquez; Jorge Gentile MartínezCasado; Dennys Julián González-Aguilera

    2014-01-01

    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 ...

  20. 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.

  1. Temperature Acquisition System Based on Token Ring Networks%基于令牌环网的温度采集控制系统

    Institute of Scientific and Technical Information of China (English)

    匡畅; 刘传林

    2014-01-01

    This paper designs a temperature acquisition system based on MSC-51 micro-controller token ring networks. The system uses simplified IEEE 802.5 token ring protocol and DS18B20 temperature sensor module for temperature acquisition. With RS485 bus, the system allows single-chip node to send message to central node MCU without collision. The central-node MCU displays temperature data from single-chip node on LCD, and also continuously control the token ring net. The simulation experiment test proves that the system can acquire the temperature data of all 16 nodes in 0.43 seconds with real-time efficiency.%本设计为一套基于MSC-51单片机令牌环网的温度采集系统,该系统采用简化的IEEE802.5令牌环网协议,使用DS18B20温度传感模块获取温度数据,通过RS485总线让分布的单片机站点能够将温度数据无冲突地传给主站单片机,主站单片机收到数据后将温度数据显示在LCD上,并不断监控令牌环的运行情况。经过模拟实验测试,该系统能够在约0.43秒内采集环网上所有16个站点的温度数据,具有较高的实时性。

  2. Based on the SOA fire integrated maintenance information acquisition system design%基于SOA的消防一体化运维信息采集系统

    Institute of Scientific and Technical Information of China (English)

    吴君

    2013-01-01

    从消防信息化系统的基本结构出发,分析了运维信息采集系统的需求,采用SOA技术设计了信息采集系统的架构,探讨了信息采集中的几个关键问题.%With the rapid development of information construction of fire,operation platform construction is becoming more and more important.Maintenance information acquisition system is playing a role in the foundation of operation platform.This article from the basic structure of fire information system,analyzes the operation information acquisition system needs,the use of SOA technology to design a information acquisition system,discusses some key problems in information collection.

  3. Data Acquisition and Compression System Based on FPGA and DSP%基于FPGA和DSP的数据采集与压缩系统∗

    Institute of Scientific and Technical Information of China (English)

    连猛; 丑修建; 李庆; 崔丽杰

    2015-01-01

    The test of each module function which is applied to the body of the arrow,has a special technical index for the data acquisition,for examples,the requirement of reading the data of large capacity,the error rate is extreme-ly low. By referring to the existing data collection and compression technology designs the data acquisition and com-pression system which bases on FPGA and DSP. This system can realize the acquisition and processing of 12 analog signals,the sample rate is 324 ksample/s. To compress the data through using DSP chip,the compression removal rate can reach 75%. According to the data error problems,this system comes up with the design of data stream frame transmission. Finally,the tests have been carried out,the experiments show that systematic work is stable,the system solves the problem of the unity of the performance,power consumption and speed.%应用于箭体各模块功能测试,对数据采集有特殊的技术指标,要求系统能读取大容量数据、误码率极低。基于此参考已有的压缩技术,设计了基于FPGA和DSP的数据采集与压缩系统,能够实现12路模拟信号的采集与处理,采样率为324 ksample/s。采用DSP对数据进行压缩,压缩去除率达到75%。针对采集数据误码问题,提出对数据分帧传输的设计方案。最后对系统进行了测试验证,实验表明系统性工作稳定、各项技术指标均达到要求。

  4. 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

  5. FPGA high-speed data acquisition system based on USB communication%基于USB通信的FPGA高速数据采集系统

    Institute of Scientific and Technical Information of China (English)

    刘吉; 杨德伟; 文怀涛; 刘超

    2011-01-01

    A FPGA high-speed data acquisition system based on USB communication is designed to solve the problems of high-speed data acquisition and transmission. The system takes FPGA as a controlling core to implement three functions of A/D control, data buffering dual-port RAM and CY7C68013A control. The programme is compiled with Verilog HDL language and ISE software to control multi-AD7356 to acquire data, store the acquired data in dual-port RAM, and control CY7C68013A to upload data to PC via USB. The experiment testifies that the system works well when CY7C68013A's trans-mission velocity is set as 16. 7 Mb/s.%为了解决高速数据采集以及数据传输问题,设计了基于USB通信的FPGA高速数据采集系统.方案以FPGA为控制核心,实现A/D控制、数据缓存双口RAM和控制CY7C68013A三个功能.系统采用Verilog HDL语言,通过ISE软件编程控制多个AD7356同时进行数据采集,将采集所得数据存入双口RAM,控制CY7C68013A将数据通过USB总线上传到PC机.系统进行实测实验表明,在CY7C68013A设定为16.7 Mb/s的传输速率下,系统工作正常.

  6. FPGA based on the image acquisition system design%基于FPGA的图像采集系统的设计

    Institute of Scientific and Technical Information of China (English)

    潘明; 陈元枝; 李强

    2012-01-01

    This paper is based on FPGA and CMOS image sensor image acquisition and processing system. After the system on the electricity, FPG A initializes the internal registers of CMOS image sensors by SCCB bus interface to set the CMOS image at work. Then according to the synchronization signal, FPGA collects of valid data of the original image. The FPGA chooses the right algorithm of color to recover for the traditional RGB format of digital image data and a frame for image data will turn to external storage SDRAM. At last the image data will be sent forward to PC by the UART for processing or displaying at real time. The design of acquisition system can work normally,so this method is reliable and effective.%研究一种基于FPGA和CMOS图像传感器的图像采集处理系统的实现方案.FPGA芯片的I/O口模拟SCCB串线总线写CMOS传感器中的寄存器,来设置CMOS图像传感器的工作方式,然后FPGA根据同步信号采集有效原始图像数据,在FPGA内还原出传统数字RGB格式图像数据,接着以帧为单位将图像数据转存到外部存储器SDRAM中,最后通过UART串口将图像数据转发到PC,进行实时处理或显示.所设计的采集系统能够正常工作,介绍的设计方案可靠有效.

  7. 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).

  8. GNSS array-based acquisition: theory and implementation

    OpenAIRE

    Arribas Lázaro, Javier

    2012-01-01

    This Dissertation addresses the signal acquisition problem using antenna arrays in the general framework of Global Navigation Satellite Systems (GNSS) receivers. The term GNSS classi es those navigation systems based on a constellation of satellites, which emit ranging signals useful for positioning. Although the American GPS is already available, which coexists with the renewed Russian Glonass, the forthcoming European contribution (Galileo) along with the Chinese Compass will be operative s...

  9. 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

    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...

  10. 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.

  11. Research on Power Distributed Data Acquisition System with Integration Mode of City and Counties Based on D5000 System%地县一体化分布式数据采集系统

    Institute of Scientific and Technical Information of China (English)

    晏亮; 阎博; 丁盛舟; 郭子明; 温昭琦; 张昊; 王鑫; 李新鹏

    2015-01-01

    针对电网调度技术支持系统的分布式一体化运行需求,在分析传统数据采集系统和分布式一体化技术的基础上,设计了一套基于D5000系统(智能电网调度技术支持系统)的地县一体化分布式数据采集系统。该系统通过采用分布式数据采集系统负载均衡运行管理技术,基于公共信息模型( Common Information Model, CIM)的高速模型交换格式CIM/E的模型维护及同步技术,以及分布式数据采集实时数据共享和监视技术,提升了数据采集的采集处理和调度运行能力,保证地县一体化分布式系统的可靠性和高效性,从而满足未来大电网运行对数据采集的要求。%According to the operation requirements of distributed integrated technology supporting system of power grid scheduling system, based on the analysis of the traditional technology of data acquisition system and distributed integrated technology, we design a power distributed data acquisition system with integration mode based on D5000 system. This system uses a distributed data acquisition system of load balancing operation and management technology, the CIM/E model maintenance and synchronization tech-nology and distributed data acquisition sharing and data monitoring technology, enhancing the processing ability of data acquisition and operation, ensuring the reliability of the integration of distributed system and efficiency of city and counties, and meeting the needs of data acquisition of large power grid in the future.

  12. Scalable multichannel MRI data acquisition system.

    Science.gov (United States)

    Bodurka, Jerzy; Ledden, Patrick J; van Gelderen, Peter; Chu, Renxin; de Zwart, Jacco A; Morris, Doug; Duyn, Jeff H

    2004-01-01

    A scalable multichannel digital MRI receiver system was designed to achieve high bandwidth echo-planar imaging (EPI) acquisitions for applications such as BOLD-fMRI. The modular system design allows for easy extension to an arbitrary number of channels. A 16-channel receiver was developed and integrated with a General Electric (GE) Signa 3T VH/3 clinical scanner. Receiver performance was evaluated on phantoms and human volunteers using a custom-built 16-element receive-only brain surface coil array. At an output bandwidth of 1 MHz, a 100% acquisition duty cycle was achieved. Overall system noise figure and dynamic range were better than 0.85 dB and 84 dB, respectively. During repetitive EPI scanning on phantoms, the relative temporal standard deviation of the image intensity time-course was below 0.2%. As compared to the product birdcage head coil, 16-channel reception with the custom array yielded a nearly 6-fold SNR gain in the cerebral cortex and a 1.8-fold SNR gain in the center of the brain. The excellent system stability combined with the increased sensitivity and SENSE capabilities of 16-channel coils are expected to significantly benefit and enhance fMRI applications. PMID:14705057

  13. 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.

  14. Data acquisition system of Moller polarimeter hall a Jefferson lab

    International Nuclear Information System (INIS)

    The structure, parameters and test results of a new data acquisition system for Moller polarimeter based on flash- ADC are presented. Flash-ADC is electronic module in VME format that consists of high-speed multichannel ADC piped type and FPGA unit on board. The use of flash-ADC has a lot of advantages: reduce of cable interconnections, events registration with higher rate, considerable decreases of system deadtime and, as result, the accuracy of polarization measurements is increases.

  15. 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.

  16. 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.

  17. 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.

  18. 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. PMID:26061553

  19. 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...

  20. 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.

  1. 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.

  2. 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.

  3. 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.

  4. 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

  5. MIPI CSI-2 Image Acquisition System Design Based on FPGA%基于FPGA的MIPI CSI-2图像采集系统设计

    Institute of Scientific and Technical Information of China (English)

    赵清壮

    2015-01-01

    This paper elaborates a design of MIPI CSI-2 high-definition camera interface image acquisition system based on FPGA. Now, MIPI high-definition CCD is used widely, this design uses FPGA to achieve MIPI high-definition CCD collect and provides two outputs of LCD screen and USB, the data transmission is stable and reliable, it make MIPI interface camera applied widely by the other circuit systems, accelerates system development and saves cost.%阐述一种基于FPGA的MIPI CSI-2接口高清摄像头图像采集系统设计,该设计用FPGA实现当前应用广泛的MIPI高清CCD采集,并提供LCD屏、USB两路输出,数据传输稳定可靠,把MIPI接口摄像头应用到更广泛的其他电路系统中,加快系统开发,节省成本。

  6. 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

    test subjects were used for this pilot project. Each subject simulated 15 seizures and in addition performed some predefined normal activities, during a 4-hour monitoring with electromyography (EMG), accelerometer, magnetometer and gyroscope (AMG), electrocardiography (ECG), electroencephalography (EEG......) and audio and video recording. The results showed that a non-subject specific MISA system developed on data from the modalities: accelerometer (ACM), gyroscope and EMG is able to detect 98% of the simulated seizures and at the same time mistakes only 4 of the normal movements for seizures. If the system...

  7. 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

  8. 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.

  9. 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...

  10. 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.

  11. 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.

  12. 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.

  13. Acquisition and representation of knowledge related to crack formation in power plant components - practical implementation in a knowledge-based system (ESR)

    International Nuclear Information System (INIS)

    The damage analysis in general and analysis of crack formation in particular, must rely on a careful balance of generic principles (e.g. generic knowledge about damage mechanisms) and information regarding the analyzed component (e.g. operating history, manufacturing data or construction records). Use of non-standard and/or advanced approaches (for damage parameters, monitoring techniques, etc.) can, on the one hand, enhance the solution by making it more comprehensive, but, on the other hand, it can also make the final decision more complex. In both cases, at the current state of practice, only heuristic knowledge can assure that all the important factors be properly considered. The examples shown in the paper illustrate the feasibility of obtaining useful interim results, which, through a continued long-term effort invested in knowledge acquisition and representation, and its integration into a knowledge-based system allow to achieve progressively the goals formulated at the beginning of the expert system for remaining life assessment project. (orig./DG)

  14. 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.

  15. Realization and Research on Data Acquisition System Based on LabVIEW%基于LabVIEW原理数据采集系统的实现和研究

    Institute of Scientific and Technical Information of China (English)

    姜光

    2012-01-01

    文中基于LabVIEW 7.0Express开发平台,设计开发了虚拟数据采集系统,并能对接收的信号进行参数设定。通过实验证明,虚拟数据采集系统实现了传统采集系统的基本功能,同时增强了系统的灵活性,与网络技术结合进行远程数据采集,充分发挥了虚拟仪器的优势。%Based on LabVIEW 7.0 Express development platform,the paper develops a virtual data acquisition system,which can set parameters for the signals received.It is shown in the experiment that the basic function of traditional data acquisition system can be fully realized by the the virtual data acquisition system,and the system flexibility is enhanced and the remote date acquisition is able to be realized via internet technology.The virtual data acquisition system can give full play to the advantages of virtual instruments.

  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. Design of Data Acquisition System for Submarines Combat System Based on Multi- Protocol Conversion%基于多协议转换的潜艇作战数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    王黎明; 郑健; 龙长江

    2012-01-01

    According to the need of data acquisition for independent and centralized Submarines Combat System, and considering the Distributed Combat System in future, the Data Acquisition System for Submarines Combat System based on Multi -Protocol Conversion is designed. Currently, data acquisition for submarines is scattered at different positions. Consequently, the existing data acquisition equipments can only be used for the specific submarines. The designed system could overcome this problem and provide equipments for general submarines and for general use. By a system performance test in laboratory environment, system response time is short, the network throughput meet current wireless network bandwidth requirements, and CPU usage is low. The test has proved this system meets the demand for data acquisition at different positions in submarines, and it has the following advantages: high stability, fast response, and strong processing power. Furthermore, its low system resource occupancy shows its high Scalability.%针对目前独立式以及集中式潜艇作战系统数据采集需要,并兼顾未来分布式作战系统发展要求,设计了一种基于多协议转换的潜艇作战数据采集系统;克服了目前由于潜艇数据采集点分散而造成研制的数据采集设备专艇专用、通用性不强的问题;通过在实验室环境下的系统性能测试,其中系统响应时间短,网络备吐率指标满足当前无线网络带宽要求,CPU使用率较低;由此证明该系统稳定、响应快、处理能力强,满足潜艇多点数据采集的要求,另外较小的系统开销也带来较强的系统可扩展性.

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

    OpenAIRE

    Liang Zhao; Jili Zhang; Ruobing Liang

    2013-01-01

    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 thr...

  19. CCD image data acquisition system for optical astronomy.

    Science.gov (United States)

    Bhat, P. N.; Patnaik, K.; Kembhavi, A. K.; Patnaik, A. R.; Prabhu, T. P.

    1990-11-01

    A complete image processing system based on a charge coupled device (CCD) has been developed at TIFR, Bombay, for use in optical astronomy. The system consists of a P-8600/B GEC CCD chip, a CCD controller, a VAX 11/725 mini-computer to carry out the image acquisition and display on a VS-11 monitor. All the necessary software and part of the hardware were developed locally, integrated together and installed at the Vainu Bappu Observatory at Kavalur. CCD as an imaging device and its advantages over the conventional photographic plate is briefly reviewed. The acquisition system is described in detail. The preliminary results are presented and the future research programme is outlined.

  20. 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.

  1. 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。

  2. 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

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

    International Nuclear Information System (INIS)

    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

  4. 基于STM32的脑电信号采集系统设计%Design of Electroencephalogram Acquisition System Based on STM32

    Institute of Scientific and Technical Information of China (English)

    王琼颖; 张宏民; 李竹琴; 刘志勇; 王乐凡; 孙金玮

    2015-01-01

    脑电信号包含大量的脑功能状态信息,已被广泛应用于脑神经疾病诊断、脑机接口、睡眠分期、麻醉深度监测等领域。脑电信号是幅度为微伏级的生物电信号,频率不超过150 Hz,极易受到眼电、心电等信号干扰,因此,有效提取脑电信号是分析脑电信号的前提。文章设计了基于 STM32的脑电信号采集系统,实现脑电信号的有效采集。通过贴在前额的三导联生物电极,将脑电信号感应至预处理电路,在前端模拟电路中对信号进行多级放大,并设计了无源滤波网络及多个有源滤波器对信号进行滤波和调理,同时加入电平抬升电路、电极连接状态检测电路。利用12位模数转换器将脑电信号转换为数字信号,并通过蓝牙模块传至上位机,实现脑电信号的有效提取与传输,为下一步处理分析提供基础。通过对比采集到的脑电信号和国外同类产品的输出,验证了该脑电采集系统的有效性。%Electroencephalogram(EEG) contains a large amount of brain function state information, and has been widely applied in many ifelds, such as cranial nerve disease diagnosis, brain-computer interface, and sleep stage and anesthetic depth monitoring. EEG is a weak bio-electric signal, whose amplitude is just microvolt and frequency is lower than 150 Hz. Since EEG is easily interfered by signals, like electro-oculogram and electrocardiogram, effective extraction of EEG is key to EEG analysis. An EEG acquisition system based on STM32 was designed to realize effective acquisition of EEG. In this system, EEG signals were sensed by three lead biological electrodes on the forehead, then ampliifed through multistage ampliifcation in the front analog circuit and ifltered by passive iflter or active iflters. Meanwhile, electrical level rising circuit and electrode connection state detection circuit were also added in. After that, EEG signals were converted to

  5. 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.

  6. 基于GPRS的无线采集终端开发%Development of the Wireless Data Acquisition System Based on GPRS

    Institute of Scientific and Technical Information of China (English)

    臧峰; 王江伟; 赵刚; 陈俊

    2015-01-01

    Dispersed regional data acquisition features low efficiency and poor real time performance, thus the data acquisition and control terminal based on GPRS has been designed. The MCF5213 from Freescale is adopted as the core processor;the hardware structure of wireless acquisition terminal is designed combining with the wireless transmission module EM310 from Huawei. On the basis of software design concept of multi-state and multi-task, the operational process of GPRS and the data acquisition monitoring functions are described in detail.%分散区域数据采集具有效率低、实时性差等缺点,因此设计了一种基于GPRS的数据采集控制终端。采用Freescale公司的MCF5213为核心处理器,结合华为公司的EM310无线发送模块,设计了无线采集终端的硬件结构。依据多状态、多任务的软件设计思想,详细阐述了GPRS的工作流程和对下数据采集监控功能。

  7. 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.

  8. 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.

  9. The Nuclotron internal target control and data acquisition system

    Energy Technology Data Exchange (ETDEWEB)

    Isupov, A.Yu., E-mail: isupov@moonhe.jinr.ru [Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation); Krasnov, V.A.; Ladygin, V.P.; Piyadin, S.M.; Reznikov, S.G. [Joint Institute for Nuclear Research, Dubna 141980 (Russian Federation)

    2013-01-11

    The new control system of the Nuclotron (JINR, Dubna) internal target is described in both hardware and software aspects. The CAMAC hardware is based on the use of the standard CAMAC modules developed and manufactured at JINR. The internal target control and data acquisition (IntTarg CDAQ) system software is implemented using the ngdp framework under the Unix-like operating system (OS) FreeBSD to allow easy network distribution of the online data collected from internal target and accompanying detectors, as well as the internal target remote control.

  10. The Nuclotron internal target control and data acquisition system

    Science.gov (United States)

    Isupov, A. Yu.; Krasnov, V. A.; Ladygin, V. P.; Piyadin, S. M.; Reznikov, S. G.

    2013-01-01

    The new control system of the Nuclotron (JINR, Dubna) internal target is described in both hardware and software aspects. The CAMAC hardware is based on the use of the standard CAMAC modules developed and manufactured at JINR. The internal target control and data acquisition (IntTarg CDAQ) system software is implemented using the ngdp framework under the Unix-like operating system (OS) FreeBSD to allow easy network distribution of the online data collected from internal target and accompanying detectors, as well as the internal target remote control.

  11. 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.

  12. 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...

  13. 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...

  14. 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.

  15. The Unit control of an acquisition system for ocean bottom seismometer (OBS)

    OpenAIRE

    Carreras Pons, Normandino; Roset Juan, Francesc Xavier; Shariat Panahi, Shahram; Artero Delgado, Carola; Manuel Lázaro, Antonio; Owen, Tim; Antonijuan Rull, Josefina

    2012-01-01

    In this paper we talk about an acquisition system for seismic data. The Ocean Bottom Seismometer (OBS) is equipment designed to obtain the seismic marine data from the seabed. The main part of this paper is based in an application which controls the acquisition data of four measurement channels. This system has been tested in lab, getting the corresponding results.

  16. 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. PMID:26410329

  17. 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.

  18. Data acquisition system for a deuteration chamber

    International Nuclear Information System (INIS)

    The work present is focusing auxiliary in the experiment the reaction of fusion in cold in the laboratory of Physical of Plasmas of Instituto Nacional de Investigaciones Nucleares. These systems of acquisition of data concrete to register in line surface of pressure and temperature in the gap of 5.6 x 10-4 to 1 x 103 and -270 to 1300 Centigrade degrees with help of personal computer. The manner of purchase in chamber of Deuterium is per middle of thermocouple with the object of whereas any control of the temperature in different point in the some of manner the signal of in for the system is the thermocouple (milli volts), the conversion analogy a digital is mean of Cad of 12 bits rate double slope the out is mean the PPI to send the signal to P C of these manner the read of the thermocouples is translate graphic or digital in the screen of the P C. In the phase of pressure element sensor is measure type Pirani, the measure is of manner of temperature. (Author)

  19. 3D - Acquisition systems - test in Chooz B nuclear plant

    International Nuclear Information System (INIS)

    EDF needs 3D-acquisition systems to get the precise geometry of critical nuclear spaces in order to prepare computer simulations of operations in these areas. The simulations must lead to an increase of the efficiency of the operation. The acquisition of the 3-D geometry can be done using 3D-acquisition systems. To answer the needs of the Construction Division, four different systems are compared by the Research Division in Chooz B nuclear plant in order to determine the right solution for each 3D-acquisition problem

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

    CERN Document Server

    Aleksandrov, Igor; The ATLAS collaboration

    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...

  1. Software upgradation of PXI based data acquisition for Aditya experiments

    International Nuclear Information System (INIS)

    Aditya Data Acquisition and Control System is designed to acquire data from diagnostics like Loop Voltage, Rogowski, Magnetic probes, X-rays etc and for control of gas feed, gate valve control, trigger pulse generation etc. CAMAC based data acquisition system was updated with PXI based Multifunction modules. The System is interfaced using optical connectivity with PC using PCI based controller module. Data is acquired using LabVIEW graphical user interface (GUI) and stored in server. The present GUI based application does not have features like module parameters configuration, analysis, webcasting etc. So a new application software using LabVIEW is being developed with features for individual module support considering programmable channel configuration - sampling rate, number of pre and post trigger samples, number of active channel selection etc. It would also have facility of using multi-functionality of timer and counter. The software would be scalable considering more modules, channels and crates along with security of different access level of user privileges. (author)

  2. 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.

  3. 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.

  4. The new digital data acquisition system for Gammasphere

    Science.gov (United States)

    Carpenter, M. P.; Albers, M.; Anderson, J. T.; Ayangeakaa, A.; David, H. M.; Hoffman, C. R.; Janssens, R. V. F.; Lauritsen, T.; Madden, T.; Oberling, M.; Seweryniak, D.; Wilt, P.; Zhu, S.

    2015-10-01

    A new digital-based data acquisition system (DAQ) for Gammasphere has been developed. This system leverages the electronics designed for the GRETINA collaboration. At the center of this development are the GRETINA 10-channel digitizer modules which handle the Ge preamp signals at a 100MHz rate, and master trigger and router modules which allow triggers to be constructed from information obtained from the digitizer channels. The new DAQ increases event throughput significantly over the existing system while addressing multiple repair and maintenance issues. New hardware and firmware to integrate the DAQ with Gammasphere and its suite of ancillary detectors has been developed allowing for a seamless changeover from the analog DAQ to the new digital system. An overview of the system and illustrative results from several recent experiments will be presented. This material is based on work supported by the DOE, Office of Science, Office of Nuclear Physics under Contract No. DE-AC02-06CH11357.

  5. Acoustic imaging systems (for robotic object acquisition)

    Science.gov (United States)

    Richardson, J. M.; Martin, J. F.; Marsh, K. A.; Schoenwald, J. S.

    1985-03-01

    The long-term objective of the effort is to establish successful approaches for 3D acoustic imaging of dense solid objects in air to provide the information required for acquisition and manipulation of these objects by a robotic system. The objective of this first year's work was to achieve and demonstrate the determination of the external geometry (shape) of such objects with a fixed sparse array of sensors, without the aid of geometrical models or extensive training procedures. Conventional approaches for acoustic imaging fall into two basic categories. The first category is used exclusively for dense solid objects. It involves echo-ranging from a large number of sensor positions, achieved either through the use of a larger array of transducers or through extensive physical scanning of a small array. This approach determines the distance to specular reflection points from each sensor position; with suitable processing an image can be inferred. The second category uses the full acoustic waveforms to provide an image, but is strictly applicable only to weak inhomogeneities. The most familiar example is medical imaging of the soft tissue portions of the body where the range of acoustic impedance is relatively small.

  6. 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

  7. Remote Data Acquisition Using Wireless - Scada System

    Directory of Open Access Journals (Sweden)

    Dr. Aditya Goel

    2009-03-01

    Full Text Available Supervisory Control and Data Acquisition (SCADA is a field of constant devel¬opment and research. This project investigates on creating an extremely low cost device which can be adapted to many different SCADA applications via some very basic program¬ming, and plugging in the relevant peripherals. Much of the price in some expensive SCADA applications is a result of using specialized communication infrastructure. The application of infrastructure, in the proposed scheme the cost will come down. Additionally the generic nature of the device will be assured. Wireless SCADA deals with the creation of an inexpensive, yet adaptable and easy to use SCADA device and infrastructure using the mobile telephone network, in particular, the General Packet Radio Service (GPRS. The hardware components making up the device are relatively unsophisticated, yet the custom written software makes it re-programmable over the air, and able to provide a given SCADA application with the ability to send and receive control and data signals at any non predetermined time. GPRS is a packet-based radio service that enables “al¬ways on” connections, eliminating repetitive and time-consuming dial-up connections. It will also provide real throughput in excess of 40 Kbps, about the same speed as an excellent landline analog modem connection.

  8. Data acquisition system for a cabled ocean bottom seismometer (OBS)

    OpenAIRE

    Rogalski, Tomasz; Shariat Panahi, Shahram; Río Fernandez, Joaquín del; Manuel Lázaro, Antonio

    2010-01-01

    Ocean Bottom Seismometers (OBS) are highly used to monitor seismic activities at sea. They are also used to detect tsunamis and generate warning alarms. This paper presents a data acquisition system built for an OBS with capability to synchronize time through IEEE-1588 protocol. This acquisition system provides real time data through the Ethernet making it suitable for OBSs deployed at seafloor observatories.

  9. Knowledge Acquisition for Semantic Search Systems

    OpenAIRE

    W. Wei; Barnaghi, PM; Bargiela, A

    2008-01-01

    Semantic search extends the scope of conventional information search and retrieval paradigms from documentoriented and to entity and knowledge-centric search and retrieval. By attempting to provide direct and intuitive answers such systems alleviate information overload problem and reduce information seekers’ cognitive overhead. Ontologies and knowledge bases are fundamental cornerstones in semantic search systems based on which sophisticated search mechanisms and efficient search services ar...

  10. 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 .

  11. Design of Inertial Data Acquisition and Storage System Based on FPGA%基于FPGA的惯性数据采集与存储系统设计

    Institute of Scientific and Technical Information of China (English)

    王楠; 韩焱; 王鉴; 李凯

    2011-01-01

    After the comparison of the characteristics of MCU., DSP and FPGA, a hardware platform is built with FPGA as the core controller. It used NAND FLASH as a storage medium and ADIS16355 as vehicle' s stance information acquisition. Finally real-time inertial data acquisition and storage is realized. The module of USB realizes the data communication between the acquisition and storage system and the computer. Firstly, the paper introduced the design of the system. Then it discussed the design method of timing logic of control and the read-write of data. The system has high stability. If put it into a camera, it can avoid the image motion because of the camera attitude and assure the steady precision of the platform.%在比较了MCU、DSP和FPGA的特性后,搭建了一个以FPGA为核心控制器的硬件平台;它采用NAND Flash作为存储介质,利用ADIS16355获取载体姿态信息,最终实现惯性数据的实时采集与存储,并通过USB模块完成与上位机的通讯;在简要介绍系统总体设计的基础上,重点讨论了系统的时序控制和数据的读写方法;该系统具有较高的角稳定度(陀螺漂移率小于0.015°/s),将其置于相机内,可较好地消除由于相机姿态变化产生的像移,保证了成像系统的稳定精度.

  12. 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...

  13. 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.

  14. Design of distributed signal synchronization data acquisition system base on ARM9%基于ARM9分布信号同步数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    邱杰锋; 樊战友; 吴成英

    2011-01-01

    Distribution of signals for synchronous data acquisition,gives a method and process of design of synchronous data acquisition system base on ARM9, analysis and solution the main problems. This paper were introduced by the system's hardware composition and software design. The main function of system is the distribution of various parameters (such as temperature, pressure, sound) at different point in synchronization data acquisition, after the acquisition will be the analog to digital conversion. The biggest advantages of the system is use of the GPS signals control the ADC conversion time in order to realize high-precision synchronization of each acquisition node. Finally,the synchronous accuracy of the system can be achieved within 100ns by experiment.%针对分布信号的同步数据采集,给出了1种基于ARM9的同步数据采集系统的设计方法和过程,并对设计中遇到的主要问题进行了分析和解决.本文从系统的硬件组成、软件设计进行了说明.本系统主要功能是对分布在各个点的各种物理量(如温度、压力、声音)进行同步数据采集,将采集后的数据进行模数转换.系统最大的优点是利用GPS信号控制ADC芯片的转换时间从而实现各个采集节点的高精度同步.最后,通过实验验证了该系统的同步精度可以达到100ns以内.

  15. An automated system for whole microscopic image acquisition and analysis.

    Science.gov (United States)

    Bueno, Gloria; Déniz, Oscar; Fernández-Carrobles, María Del Milagro; Vállez, Noelia; Salido, Jesús

    2014-09-01

    The field of anatomic pathology has experienced major changes over the last decade. Virtual microscopy (VM) systems have allowed experts in pathology and other biomedical areas to work in a safer and more collaborative way. VMs are automated systems capable of digitizing microscopic samples that were traditionally examined one by one. The possibility of having digital copies reduces the risk of damaging original samples, and also makes it easier to distribute copies among other pathologists. This article describes the development of an automated high-resolution whole slide imaging (WSI) system tailored to the needs and problems encountered in digital imaging for pathology, from hardware control to the full digitization of samples. The system has been built with an additional digital monochromatic camera together with the color camera by default and LED transmitted illumination (RGB). Monochrome cameras are the preferred method of acquisition for fluorescence microscopy. The system is able to digitize correctly and form large high resolution microscope images for both brightfield and fluorescence. The quality of the digital images has been quantified using three metrics based on sharpness, contrast and focus. It has been proved on 150 tissue samples of brain autopsies, prostate biopsies and lung cytologies, at five magnifications: 2.5×, 10×, 20×, 40×, and 63×. The article is focused on the hardware set-up and the acquisition software, although results of the implemented image processing techniques included in the software and applied to the different tissue samples are also presented.

  16. Spent fuel test. Climax data acquisition system integration report

    Energy Technology Data Exchange (ETDEWEB)

    Nyholm, R.A.; Brough, W.G.; Rector, N.L.

    1982-06-01

    The Spent Fuel Test - Climax (SFT-C) is a test of the retrievable, deep geologic storage of commercially generated, spent nuclear reactor fuel in granitic rock. Eleven spent fuel assemblies, together with 6 electrical simulators and 20 guard heaters, are emplaced 420 m below the surface in the Climax granite at the Nevada Test Site. On June 2, 1978, Lawrence Livermore National Laboratory (LLNL) secured funding for the SFT-C, and completed spent fuel emplacement May 28, 1980. This multi-year duration test is located in a remote area and is unattended much of the time. An extensive array of radiological safety and geotechnical instrumentation is deployed to monitor the test performance. A dual minicomputer-based data acquisition system collects and processes data from more than 900 analog instruments. This report documents the design and functions of the hardware and software elements of the Data Acquisition System and describes the supporting facilities which include environmental enclosures, heating/air-conditioning/humidity systems, power distribution systems, fire suppression systems, remote terminal stations, telephone/modem communications, and workshop areas. 9 figures.

  17. Spent fuel test. Climax data acquisition system integration report

    International Nuclear Information System (INIS)

    The Spent Fuel Test - Climax (SFT-C) is a test of the retrievable, deep geologic storage of commercially generated, spent nuclear reactor fuel in granitic rock. Eleven spent fuel assemblies, together with 6 electrical simulators and 20 guard heaters, are emplaced 420 m below the surface in the Climax granite at the Nevada Test Site. On June 2, 1978, Lawrence Livermore National Laboratory (LLNL) secured funding for the SFT-C, and completed spent fuel emplacement May 28, 1980. This multi-year duration test is located in a remote area and is unattended much of the time. An extensive array of radiological safety and geotechnical instrumentation is deployed to monitor the test performance. A dual minicomputer-based data acquisition system collects and processes data from more than 900 analog instruments. This report documents the design and functions of the hardware and software elements of the Data Acquisition System and describes the supporting facilities which include environmental enclosures, heating/air-conditioning/humidity systems, power distribution systems, fire suppression systems, remote terminal stations, telephone/modem communications, and workshop areas. 9 figures

  18. Dumand-array data-acquisition system

    International Nuclear Information System (INIS)

    An overall data acquisition approach for DUMAND is described. The scheme assumes one array to shore optical fiber transmission line for each string of the array. The basic event sampling period is approx. 13 μsec. All potentially interesting data is transmitted to shore where the major processing is performed

  19. The on-line data acquisition system for the MHD facility of Frascati

    International Nuclear Information System (INIS)

    An on-line data acquisition system for the MHD facility of the Laboratorio Conversione Diretta at Frascati is described. After a brief description of the MHD facility and of the measurement requirements, the criteria a,d the configuration of the minicomputer-based data acquisition system chosen are presented. Then the general philosophy and the flow-charts of the software implemented are shown, with particular emphasis to the real-time requirements of the measurement system. At last it is illustrated an off-line program, running on a large computer, that elaborates the output data of the data acquisition system

  20. Generic data acquisition system for robotic waste characterization

    International Nuclear Information System (INIS)

    This paper describes a generic data acquisition system for robotic characterization of DOE production facilities and waste sites. While the specific suite of characterization sensors on the end of a robotic arm or vehicle will depend on site needs, many of the data acquisition, display, archival and interpretation requirements of the sites are common. Therefore, the objective is to create a generic, reusable computing and data acquisition system which can accept a multitude of sensors. This paper discusses the progress to date and future plans for the system

  1. 基于TMS320F2812的高速数据采集系统%High-speed Data Acquisition System Based on TMS320F2812

    Institute of Scientific and Technical Information of China (English)

    黄惠钦; 杨威棣; 潘雪峰

    2011-01-01

    8 roads sync signal was collection by using TMS320F2812 DSP and MAX13O8 AD coverter. Collected data rela-time transited to the computer by CH372 USB inerface chip, and the data acquisition process controled and displayed by computer. The system can realized 800kbps real-time date transmission in single road of date acquisition and 400kbps in 8 roads synchronous collection.%采用TMS320F2812型号的DSP和MAX1308型号的AD转换器完成对8路同步信号的采集,通过USB接口芯片CH372将采集到的数据实时传输给计算机,计算机对整个数据采集过程进行控制并显示.该系统对单路的数据采集,可以实现800kbps的实时数据传输,8路同步采集可以实现400kbps的实时数据传输.

  2. 基于CMOS图像传感器的视频采集系统设计%Design of video acquisition system based on CMOS image sensor

    Institute of Scientific and Technical Information of China (English)

    丁昊杰; 刘敬彪; 盛庆华

    2012-01-01

    提出了一种采用Altera公司CycloneⅡ系列的FPGA作为主控芯片,采用OV7670这款CMOS图像传感器作为视频信号源并采用SRAM(静态随机存储器)作为数据缓存的实用方案,实现了对图像传感器寄存器配置、图像传感器输出信号采集、图像数据格式转换、图像数据缓存及最终在VGA显示器上进行图像显示的一系列过程.该视频采集系统设计能够很好地满足实时图像的输出需求.%The configuration of the image sensor's registers, image sensor output signal acquisition, image data format conversion, image data buffer and final image displays on VGA monitor were realized by taking Altera's Cyclone II FPGA as a control chip, OV7670 CMOS image sensor as the video source and SRAM(Static Random Access Memory) as a data cache. The digital video acquisition system is able to satisfy the demand for real-time image output.

  3. 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

  4. The data acquisition system for the JADE detector

    International Nuclear Information System (INIS)

    An outline of the data acquisition system for the JADE experiment at PETRA, DESY is presented. After describing the hardware configuration, we describe our guiding ideas for the design of the data acquisition system, which is followed by accounts of the implementation of real time software, the data flow, the monitoring and detector control as well as the online event analysis and filtering. Finally we summarise our experience with the system. (orig.)

  5. 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.

  6. A Flexible Microcontroller-Based Data Acquisition Device

    OpenAIRE

    Darko Hercog; Bojan Gergič

    2014-01-01

    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 d...

  7. 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.

  8. Data acquisition system for light-ion irradiation creep experiment.

    Energy Technology Data Exchange (ETDEWEB)

    Hendrick, P.L.; Whitaker, T.J.

    1979-07-01

    Software was developed for a PDP11V/03-based data acquisition system to support the Light-Ion Irradiation Creep Experiment installed at the University of Washington Tandem Van de Graaff Accelerator. The software consists of a real-time data acquisition and storage program, DAC04, written in assembly language. This program provides for the acquisition of up to 30 chennels at 100 Hz, data averaging before storage on disk, alarming, data table display, and automatic disk switching. All analog data are acquired via an analog-to-digital converter subsystem having a resolution of 14 bits, a maximum throughput of 20 kHz, and an overall system accuracy of +-0.01%. These specifications are considered essential for the long-term measurement of irradiation creep strains and temperatures during the light-ion bombardment of irradiation creep specimens. The software package developed also contains a collection of FORTRAN programs designed to monitor a test while in progress. These programs use the foreground/background feature of the RT-11 operating system. The background programs provide a variety of services. The program, GRAFTR, allows transient data (i.e., prior to averaging) to be graphed at the graphics terminal. The program, GRAFAV, allows averaged data to be read from disk and displayed graphically at the terminal. The program, TYPAV, reads averaged data from disk and displays it at the terminal in tabular form. Other programs allow text messages to be written to disk, read from disk, and allow access to DAC04 initialization data. 5 figures, 18 tables.

  9. Data acquisition system for light-ion irradiation creep experiment

    International Nuclear Information System (INIS)

    Software was developed for a PDP11V/03-based data acquisition system to support the Light-Ion Irradiation Creep Experiment installed at the University of Washington Tandem Van de Graaff Accelerator. The software consists of a real-time data acquisition and storage program, DAC04, written in assembly language. This program provides for the acquisition of up to 30 chennels at 100 Hz, data averaging before storage on disk, alarming, data table display, and automatic disk switching. All analog data are acquired via an analog-to-digital converter subsystem having a resolution of 14 bits, a maximum throughput of 20 kHz, and an overall system accuracy of +-0.01%. These specifications are considered essential for the long-term measurement of irradiation creep strains and temperatures during the light-ion bombardment of irradiation creep specimens. The software package developed also contains a collection of FORTRAN programs designed to monitor a test while in progress. These programs use the foreground/background feature of the RT-11 operating system. The background programs provide a variety of services. The program, GRAFTR, allows transient data (i.e., prior to averaging) to be graphed at the graphics terminal. The program, GRAFAV, allows averaged data to be read from disk and displayed graphically at the terminal. The program, TYPAV, reads averaged data from disk and displays it at the terminal in tabular form. Other programs allow text messages to be written to disk, read from disk, and allow access to DAC04 initialization data. 5 figures, 18 tables

  10. 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.

  11. 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.

  12. Spent Fuel Test - Climax data acquisition system operations manual

    International Nuclear Information System (INIS)

    The Spent Fuel Test-Climax (SFT-C) is a test of the retrievable, deep geologic storage of commercially generated, spent nuclear reactor fuel in granite rock. Eleven spent fuel assemblies, together with 6 electrical simulators and 20 guard heaters, are emplaced 420 m below the surface in the Climax granite at the US Department of Energy Nevada Test Site. On June 2, 1978, Lawrence Livermore National Laboratory (LLNL) secured funding for the SFT-C, and completed spent fuel emplacement May 28, 1980. The multi-year duration test is located in a remote area and is unattended much of the time. An extensive array of radiological safety and geotechnical instrumentation is deployed to monitor the test performance. A dual minicomputer-based data acquisition system (DAS) collects and processes data from more than 900 analog instruments. This report documents the software element of the LLNL developed SFT-C Data Acquisition System. It defines the operating system and hardware interface configurations, the special applications software and data structures, and support software

  13. Evolutionary analysis of iron (Fe) acquisition system in Marchantia polymorpha.

    Science.gov (United States)

    Lo, Jing-Chi; Tsednee, Munkhtsetseg; Lo, Ying-Chu; Yang, Shun-Chung; Hu, Jer-Ming; Ishizaki, Kimitsune; Kohchi, Takayuki; Lee, Der-Chuen; Yeh, Kuo-Chen

    2016-07-01

    To acquire appropriate iron (Fe), vascular plants have developed two unique strategies, the reduction-based strategy I of nongraminaceous plants for Fe(2+) and the chelation-based strategy II of graminaceous plants for Fe(3+) . However, the mechanism of Fe uptake in bryophytes, the earliest diverging branch of land plants and dominant in gametophyte generation is less clear. Fe isotope fractionation analysis demonstrated that the liverwort Marchantia polymorpha uses reduction-based Fe acquisition. Enhanced activities of ferric chelate reductase and proton ATPase were detected under Fe-deficient conditions. However, M. polymorpha did not show mugineic acid family phytosiderophores, the key components of strategy II, or the precursor nicotianamine. Five ZIP (ZRT/IRT-like protein) homologs were identified and speculated to be involved in Fe uptake in M. polymorpha. MpZIP3 knockdown conferred reduced growth under Fe-deficient conditions, and MpZIP3 overexpression increased Fe content under excess Fe. Thus, a nonvascular liverwort, M. polymorpha, uses strategy I for Fe acquisition. This system may have been acquired in the common ancestor of land plants and coopted from the gametophyte to sporophyte generation in the evolution of land plants. PMID:26948158

  14. 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。

  15. Online event filtering in the JADE data acquisition system

    International Nuclear Information System (INIS)

    The data acquisition system developed for the JADE experiment at PETRA, DESY includes the facility to use software to filter out background events. The design, implementation, testing and experience gained are discussed. (orig.)

  16. 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...

  17. 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...

  18. 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.

  19. 基于无线传感网的多功能低功耗数据采集平台设计%Design of Low Power and Multi-functional Data Acquisition System Based on Wireless Sensor Network

    Institute of Scientific and Technical Information of China (English)

    虞致国; 万书芹; 陈子逢; 魏斌; 黄召军

    2012-01-01

    针对有线数据传输方式成本高、布线不易等缺陷,采用以MC1322X为核心,设计实现了一套基于ZigBee技术的数据无线传输系统。系统由采集节点、路由节点、协调器节点和上位机监控软件组成。介绍了系统原理结构,详细阐述了系统的硬件设计、系统的软件流程图。测试结果表明,采集节点具备低功耗特性,系统能够进行实时可靠通信。%For the defects of high cost and wiring complexity of wired network, a low power and wireless data acquisition system based on ZigBee technology and MC1322X is designed. The system is composed of data acquisition nodes, routing nodes, coordinator node and monitoring software. The system structure is in- troduced and hardware design, software flow chart are elaborated in detail. The testing result shows the data acquisition node has the advantage of low-power consumption and the whole system can communicate reliably.

  20. Optimal Acquisition and Inventory Control for a Remanufacturing System

    OpenAIRE

    Zhigang Jiang; Shuo Zhu; Hua Zhang; Yanhong Wang

    2013-01-01

    Optimal acquisition and inventory control can often make the difference between successful and unsuccessful remanufacturing. However, there is a greater degree of uncertainty and complexity in a remanufacturing system, which leads to a critical need for planning and control models designed to deal with this added uncertainty and complexity. In this paper, a method for optimal acquisition and inventory control of a remanufacturing system is presented. The method considers three inventories, on...

  1. 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.

  2. 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.

  3. 基于Android的医疗设备无线数据采集与维护系统的设计%Design of Wireless Data Acquisition and Maintenance System for Medical Equipment based on Android

    Institute of Scientific and Technical Information of China (English)

    俸皓; 陈俊彦; 牛旭

    2015-01-01

    为了提高医疗设备数据采集与维护的效率,设计了基于Android终端的数据采集系统.终端可通过低功耗蓝牙对医疗设备实施数据采集、参数设置和维护操作,采集得到的数据可在终端上进行暂存和统计分析管理,并可通过移动互联网上传至服务器.以血液细胞分析仪的数据采集为实际背景实现了本系统,测试和部署结果表明,本设计能够满足应用需求.%To improve the efficiency of data acquisition and maintenance of medical devices, the data acquisition system has been designed based on Android terminal. This kind of terminal can do data acquisition, parameter configuration and maintenance on the medical device by low power consumption bluetooth. The collected data could be temporarily restored for statistical analysis and management on the terminal, finally it will be transferred to the server through mobile Internet. We implement the system based on the data collected by blood cell analysis device, and the design can reach the practical requirement.

  4. Explanation-based knowledge acquisition of electronics

    Science.gov (United States)

    Kieras, David E.

    1992-08-01

    This is the final report in a project that examined how knowledge of practical electronics could be acquired from materials similar to that appearing in electronics training textbooks, from both an artificial intelligence perspective and an experimental psychology perspective. Practical electronics training materials present a series of basic circuits accompanied by an explanation of how the circuit performs the desired function. More complex circuits are then explained in terms of these basic circuits. This material thus presents schema knowledge for individual circuit types in the form of explanations of circuit behavior. Learning from such material would thus consist of first instantiating any applicable schemas, and then constructing a new schema based on the circuit structure and behavior described in the explanation. If the basic structure of the material is an effective approach to learning, learning about a new circuit should be easier if the relevant schemas are available than not. This result was obtained for both an artificial intelligence system that used standard explanation-based learning mechanisms and with human learners in a laboratory setting, but the benefits of already having the relevant schemas were not large in these materials. The close examination of learning in this domain, and the structure of knowledge, should be useful to future cognitive analyses of training in technical domains.

  5. Comparison Framework of FPGA-based GNSS Signals Acquisition Architectures

    OpenAIRE

    Leclère, Jérôme; Botteron, Cyril; Farine, Pierre-André

    2013-01-01

    The acquisition of Global Navigation Satellite Systems signals using Code Division Multiple Access can be performed through classical correlation or using a Fourier transform. These methods are well known but what is missing is a comparison of their performance for a given hardware area or target. This paper presents this comparison for Field Programmable Gate Arrays, describing the different parameters involved in the acquisition, detailing some optimized implementations where hardware eleme...

  6. Experiences at HERA with the H1 data acquisition system

    International Nuclear Information System (INIS)

    The recently commissioned HERA collider provides a significant pointer to the problems that have to be surmounted in data acquisition systems at the next generation of hadron machines. With bunch crossings, between 30 GeV electrons and 820 GeV protons, 96 nanoseconds apart, the H1 experiment illustrates the application of sophisticated pipelining solutions in the readout of several hundred thousand electronic channels. A modular, multiprocessor design structure emphasis the architectural concepts necessary to cope with large data throughput and yet remain flexible enough to exploit ongoing technological advances in both hardware and software. The range of techniques implemented will be surveyed, covering various digitisation solutions at the front-end through to embedded microprocessor arrays in standard busses controlled by graphics-based stations executing object- orientated code. The experiences gained in developing such a system are also discussed. (orig.)

  7. 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.

  8. 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.

  9. Optic fibber data acquisition and transmission system dedicated to a neutron generator

    International Nuclear Information System (INIS)

    Hereby, are presented the design, construction and application of a virtual data acquisition system based on the usage of microcontrollers, optic fibber, and PC. System is aimed to the reestablishment of the communication between the basic modules of a Neutron Generator. The work shows, how the original interface design is upgraded by the automation of the data acquisition, on the Neutron Generator exploitation parameters. The PC usage is being introduced in the Neutron Generator and the precedent is established for further subsystem

  10. Upgrade and extension of the data acquisition system for propulsion and gas dynamic laboratories.

    OpenAIRE

    Wendland, Richard A.

    1992-01-01

    Approved for public release; distribution is unlimited The goal of the present work was to upgrade the data acquisition system (DAS) in the high-speed building of the Turbopropulsion Laboratory (TPL) and to develop a high-speed acquisition capability for pressure measurements for both the TPL and the new Gas Dynamics Laboratory (GDL) . Based on the use of the Hewlett Packard HP9000 Series 300 Computer as the system controller, a 96-channel high-speed pressure DAS was d...

  11. Multiple multichannel spectra acquisition and processing system with intelligent interface

    International Nuclear Information System (INIS)

    A Multiple multichannel spectra acquisition and processing system with intelligent interface is described. Sixteen spectra measured with various lengths, channel widths, back biases and acquisition times can be identified and collected by the intelligent interface simultaneously while the connected computer is doing data processing. The execution time for the Ge(Li) gamma-ray spectrum analysis software on IBM PC-XT is about 55 seconds

  12. Object Tracker Using Fmcw System And Image Acquisition

    Directory of Open Access Journals (Sweden)

    C.Abhishek

    2014-06-01

    Full Text Available This paper discusses the design and implementation of FMCW systems and tracking an object by using the data given by these systems followed by image acquisition. It concludes with an overview of the effects of oscillator phase noise and reflected power on the performance of these systems.

  13. Configuration for the WNR data acquisition system for neutron measurements

    International Nuclear Information System (INIS)

    The configuration for a new data acquisition system for the Weapons Neutron Research Facility at the Los Alamos National Laboratory is introduced. The system utilizes a FASTBUS front-end for real-time data collection and DEC computers for the experiment control and analysis. A local area network is used extensively within the overall system. 6 refs., 3 figs

  14. 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.

  15. 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.

  16. Uplink coarse acquisition for a mobile user satellite system

    Science.gov (United States)

    Biederman, L.

    For the purpose of the present investigation, coarse time acquisition is defined as the time required to receive a successful acknowledgement from the satellite. This definition can be justified if the false alarm probability is selected to be relatively low. It is assumed that the ground platforms are mobile, the uplink signal is frequently hopped, and all users have a preassigned uplink time synchronization channel. Attention is given to acquisition algorithm and system concept, the optimum detector structure, aspects of optimum detector performance, and coarse acquisition performance tradeoffs. For the optimum choice, the detector performance is shown as a function of the number of hops accumulated by the video integrator. It is found that the coarse acquisition detector performance could be severely degraded if the uplink signal-to-noise ratio drops by more than 1 dB below the threshold requirement.

  17. A High Performance Virtualized Seismic Data Acquisition System

    Science.gov (United States)

    Davis, G. A.; Eakins, J. A.; Reyes, J. C.; Franke, M.; Sánchez, R. F.; Cortes Muñoz, P.; Busby, R. W.; Vernon, F.; Barrientos, S. E.

    2014-12-01

    As part of a collaborative effort with the Incorporated Research Institutions for Seismology, a virtualized seismic data acquisition and processing system was recently installed at the Centro Sismológical Nacional (CSN) at the Universidad de Chile for use as part of their early warning system. Using lessons learned from the Earthscope Transportable Array project, the design of this system consists of dedicated acquisition, processing and data distribution nodes hosted on a high availability hypervisor cluster. Data is exchanged with the IRIS Data Management Center and the existing processing infrastructure at the CSN. The processing nodes are backed by 20 TB of hybrid Solid State Disk (SSD) and spinning disk storage with automatic tiering of data between the disks. As part of the installation, best practices for station metadata maintenance were discussed and applied to the existing IRIS sponsored stations, as well as over 30 new stations being added to the early warning network. Four virtual machines (VM) were configured with distinctive tasks. Two VMs are dedicated to data acquisition, one to the real-time data processing, and one as relay between data acquisition and processing systems with services for the existing earthquake revision and dissemination infrastructure. The first acquisition system connects directly to Basalt dataloggers and Q330 digitizers, managing them, and acquiring seismic data as well as state-of-health (SOH) information. As newly deployed stations become available (beyond the existing 30), this VM is configured to acquire data from them and incorporate the additonal data. The second acquisition system imports the legacy network of CSN and data streams provided by other data centers. The processing system is connected to the production and archive databases. The relay system merges all incoming data streams and obtains the processing results. Data and processing packets are available for subsequent review and dissemination by the CSN. Such

  18. Design of Embedded Data Acquisition Terminal Based on RFID in Manufacturing Execution System of Textile Enterprise%面向纺织MES系统的RFID嵌入式数据采集终端设计

    Institute of Scientific and Technical Information of China (English)

    刘昊

    2012-01-01

    Oriented to the textile enterprise information-based transformation, this article designed the overall frame and structure of manufacturing execution system based on RFID technology. According to the existing deficiencies on enterprise production line data acquisition terminal, data collection terminal system adopted combinative of the three technologies based on RFID, embedded and Internet technology is designed and realized. According to the test, the system could achieve data acquisition, production management and control of enterprise information integration.%面向纺织企业信息化改造,设计了基于RFID技术的生产制造执行系统总体框架结构,并针对企业现有生产线数据采集终端的一些不足,构建了基于RFID技术、嵌入式技术与Internet技术3者相结合的数据采集终端系统.经测试,该系统实现数据采集、生产管理以及企业信息控制的无缝集成.

  19. 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.

  20. 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。

  1. 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.

  2. 基于IPad的管线数据采集系统设计与应用%Design and Application of Pipeline Data Acquisition System Based On IPad

    Institute of Scientific and Technical Information of China (English)

    尹志永; 沈飞飞; 徐运; 李仕佳

    2013-01-01

    地下管线是城市的重要基础设施,关系到城市经济发展和整体运行,采集地下管线数据,管理管线的各种信息资料,是城市规划建设和可持续发展的需要.本文结合天津市地下管线信息管理相关规范,设计并应用了基于IPad的管线数据采集系统,实现了管线数据外业高效采集及内业自动成图一体化.同时,详述了该系统的体系结构设计、数据库设计、业务逻辑设计、功能应用设计等,为移动GIS在测绘领域的应用提供了新思路.%Underground pipeline is the important infrastructure of the city, which is related to the urban economic development and o-verall operation. It is very important for urban construction and sustainable development to capture pipeline data and manage various kinds of information material. Combined with technical specification for information management of underground pipelines and cables in Tianjin, this paper designs and implements pipeline data acquisition system running on IPad device, which acquires pipeline data efficiently and draws pipeline map automatically. At the same time, the paper describes system structure design, database design, logic design and function design, which provides a new train of thought for mobile GIS applications in the field of surveying and mapping.

  3. 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.

  4. Faillure Analysis for Domain Knowledge Acquisition in a Knowledge-Intensive CBR System

    OpenAIRE

    Cordier, Amélie; Fuchs, Béatrice; Lieber, Jean; Mille, Alain

    2007-01-01

    International audience A knowledge-intensive case-based reasoning system has profit of the domain knowledge, together with the case base. Therefore, acquiring new pieces of domain knowledge should improve the accuracy of such a system. This paper presents an approach for knowledge acquisition based on some failures of the system. The CBR system is assumed to produce solutions that are consistent with the domain knowledge but that may be inconsistent with the expert knowledge, and this inco...

  5. An acquisition system of digital nuclear signal processing for the algorithm development

    International Nuclear Information System (INIS)

    A principle and method of constructing the digital acquisition system is presented in this work, which is convenient for the study on the theories and algorithms of digital nuclear signal processing. The hardware system of the digital acquisition system consists of front-end controller, waveform digitizer and PC workstation, on which the software system has been developed based on Visual C++ under Windows environment. The alterable-frequency sampling (AFS) algorithm and the alterable-frequency trapezoidal filter (AFTF) algorithm have also been studied in the real-time environment, along with a digital nuclear spectrum acquisition system being set up based on the new algorithms and the γ-ray spectra of 241Am being shown. A useful experimental platform could be provided by this work for the successive work such as the development of global digitized nuclear measurement system and the study of digital nuclear signal processing. (authors)

  6. Subject Acquisition for Web-Based Surveys

    OpenAIRE

    Alvarez, R. Michael; Sherman, Robert P.; VanBeselaere, Clara

    2003-01-01

    This article provides a basic report about subject recruitment processes for Web-based surveys. Using data from our ongoing Internet Survey of American Opinion project, two different recruitment techniques (banner advertisement and subscription campaigns) are compared. This comparison, together with a typology of Web-based surveys, provides insight into the validity and generalizability of Internet survey data. The results from this analysis show that, although Internet survey respondents dif...

  7. 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…

  8. An Overview of the LIGO Control and Data Acquisition System

    CERN Document Server

    Bork, R G; Barker, D; Heefner, J W

    2001-01-01

    The LIGO Control and Data system (CDS) features a tightly coupled and highly integrated control and data acquisition system. Control of the interferometers requires many Multiple Input Multiple Output (MIMO) control loops closed both locally and across the 4-kilometer interferometer arm lengths. In addition to providing the closed loop control, the control systems front end processors act as Data Collection Units (DCU) for the data acquisition system. Data collected by these front ends and the data acquisition system must be collected and time stamped to an accuracy of 1 microsecond and made available to on-line analysis tools such as the Global Diagnostics System (GDS)[1]. Data is also sent to the LIGO Data Analysis System (LDAS)[2] for long-term storage and off-line analysis. Data rates exceed 5 Mbytes per second per interferometer continuous. Connection between the various front end processors and the data acquisition system is achieved using fiber optic reflective memory networks. Both controls and data a...

  9. The ATLAS Data Acquisition and High Level Trigger system

    Science.gov (United States)

    The ATLAS TDAQ Collaboration

    2016-06-01

    This paper describes the data acquisition and high level trigger system of the ATLAS experiment at the Large Hadron Collider at CERN, as deployed during Run 1. Data flow as well as control, configuration and monitoring aspects are addressed. An overview of the functionality of the system and of its performance is presented and design choices are discussed.

  10. 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…

  11. 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.)

  12. 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.

  13. The data acquisition system of the OPAL detector at LEP

    International Nuclear Information System (INIS)

    This report describes the 1991 implementation of the data acquisition system of the OPAL detector at LEP including the additional services and infrastructure necessary for its correct and reliable operation. The various tasks in this 'on-line' environment are distributed amongst many VME subsystems, workstations and minicomputers which communicate over general purpose local area networks and special purpose buses. The tasks include data acquisition, control, monitoring, calibration and event reconstruction. The modularity of both hardware and software facilitates the upgrading of the system to meet new requirements. (orig.)

  14. 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.

  15. Waste retrieval sluicing system data acquisition system acceptance test report

    International Nuclear Information System (INIS)

    This document describes the test procedure for the Project W-320 Tank C-106 Sluicing Data Acquisition System (W-320 DAS). The Software Test portion will test items identified in the WRSS DAS System Description (SD), HNF-2115. Traceability to HNF-2115 will be via a reference that follows in parenthesis, after the test section title. The Field Test portion will test sensor operability, analog to digital conversion, and alarm setpoints for field instrumentation. The W-320 DAS supplies data to assist thermal modeling of tanks 241-C-106 and 241-AY-102. It is designed to be a central repository for information from sources that would otherwise have to be read, recorded, and integrated manually. Thus, completion of the DAS requires communication with several different data collection devices and output to a usable PC data formats. This test procedure will demonstrate that the DAS functions as required by the project requirements stated in Section 3 of the W-320 DAS System Description, HNF-2115

  16. 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.

  17. 基于ADSP-BF561的视频采集与显示系统设计与开发%Design and development of real-time video acquisition and display system based on ADSP-BF561

    Institute of Scientific and Technical Information of China (English)

    王晓卫; 樊海荣; 李明哲

    2014-01-01

    Tin order to realize the real-time video acquisition and display in the BF561video processing system,the design and developing method of the acquisition and output modules in the video processing system based on ADSP-BF561 are de-scribed in the aspects of hardware and software. According to the analysis of the system hardware architecture and video signal format,the design scheme ensured the continuity of video transmission,realized the real-time acquisition and display of video images,and laid out a foundation for the development of video processing system through the reasonable arrangement and con-figuration of video input/output working flow management and the peripheral resource on BF 561.%针对BF561视频处理系统中视频实时采集和显示这一基础问题,从软硬件两个方面对以ADSP-BF561为核心的视频处理系统中的采集和输出模块的设计和开发方法进行描述。该设计方案在分析系统硬件结构和所采集的视频信号格式的基础上,通过对视频输入/输出工作流程以及BF561片上外设资源的合理安排和配置,保证视频传输的连续性,实现了视频图像的实时采集和显示,为视频处理系统的工作奠定了基础。

  18. 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.

  19. 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...

  20. [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.

  1. Design of high definition video acquisition and display system based on FPGA%基于FPGA的高清视频采集与显示系统设计

    Institute of Scientific and Technical Information of China (English)

    左事君; 刘新朝; 何巧珍; 傅兴华

    2011-01-01

    A design of high definition video acquisition and display system based on FPGA is presented. The system uses FPGA as the main processor cooperated with the high definition CCD image sensor, ADC analog-digital convertor, video coder etc. The real-time high definition video acquisition and display system is realized. The FPGA implementation of the Bayer interpolation, color space conversion and BURST transmission are detailedly delivered. The test shows that the system works well, can satisfy the real-time video surveillance requirement.%介绍了一种基于FPGA的视频采集与显示系统的设计.系统以FPGA为核心,配合高分辨率CCD图像传感器、ADC模数转换、视频编码器等,实现了高清视频实时采集与显示.详细阐述了色彩插值与色彩空间转换算法和BURST传输的FPGA硬件实现.测试表明,该系统运行良好,能够满足高清视频实时监控要求.

  2. 基于ZigBee无线传感器网络数据采集系统设计与开发%Design and Development of Data Acquisition System Based on ZigBee Wireless Sensor Network

    Institute of Scientific and Technical Information of China (English)

    唐敏

    2015-01-01

    The article suggest a novel WSN data acquisition system based on Zigbee. The system is used in the teaching and experi⁃ment. The sensor nodes of the system can form the net topology architecture of star. Secondly, the information from sensor can be transmitted to PC via Zigbee and data acquisition module, and then doing analyze and deal with together. The system will be used in many fields in the future.%该文提出了一种基于ZigBee的无线传感器网络数据采集系统,该系统直接应用于课程教学实训,本系统由若干个传感器节点组成星型网络拓扑结构,终端节点将采集到的数据通过ZigBee无线传感器网络发送给协调器节点,由协调器节点通过串中发送到PC机,然后进行统一的分析和处理。该系统也可以应用于其他领域。

  3. 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...

  4. A data acquisition system with mass storage

    NARCIS (Netherlands)

    Elswijk, P.B.J. van; Engmann, R.; Hoogenboom, A.M.; Wit, P. de

    1971-01-01

    data handling system consisting of a small computer with disk storage and magnetic tape has been developed for various kinds of nuclear spectroscopy experiments. The operator can specify the data structure and parameters of the experiment in a suitable code to the computer.

  5. Upgrade of the HADES data acquisition system

    International Nuclear Information System (INIS)

    Next years HADES will be moved to the upcoming FAIR accelerator complex. Here, HADES-at-FAIR will continue its experimental program. Due to mentioned future plans, the detector undergoes an upgrade. In order to be able to take the data in the Au+Au collision system at 8 GeV/u with a sustained trigger rate of 20 kHz (in peak 100 kHz) and expected average amount of the data 300 MB/s, our trigger and readout system has to be improved. A major part of the new DAQ system is the general-purpose Trigger and Readout Board (TRB), which serves as a platform for all other subsystems. To broaden the spectrum of possible applications, in the future DAQ-systems, we added a very high data-rate digital interface connector to this board (15 Gbit/s). It gives the possibility to mount an add-on boards to the TRB. The add-on boards then provide the detector-specific interfaces (special connectors) or FEE (like ADCs) and additional computing resources (FPGAs). All required add-on modules for the HADES-at-FAIR upgrade have been built and their basic functionality has been tested. The major steps of the upgrade program are shown in several parts: overview of the general DAQ concept, general readout platform, readout electronics for our detectors (add-ons), new event building concept, slow control, trigger distribution system and moreover also a part of the front-end electronics.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. Design of acquisiting data system for blue water based on MSP430F169%基于MSP430F169的深海环境数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    林毓梁; 张锐; 王伟

    2011-01-01

    To solve the difficult problem of acquisiting data for blue water, this paper introduced one type of data acquisition system based on MSP430F169. It collected the information of environment, such as temperature, salinity and pressure, and sent these data to PC for dynamic display and data analysis on HMI. It can work for long time with Iow power. We use the single chip MSP430F169 as the core controller of the system. Some key program is given. It has been proved that the system is practicable.%为解决深海环境信息采集问题.介绍一种基于MSP430F169的数据采集系统.本系统可实现对温度、盐度、压力等信息的采集和存储.并可上传至上位机.通过人机界面进行动态曲线显示、数据分析.系统采样精度高.功耗低.一次充电可长期工作.并给出以MSP430F169为核心的硬件电路图和关键源程序.经过海洋实验证明.此系统可以完成对深海环境信息的采集.

  11. The design of data acquisition system of the machine tools based on LabVIEW%基于LabVIEW的机床数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    韩广亮; 曹文智; 马晓波; 林剑峰

    2011-01-01

    This paper discusses how to design multifunction data acquisition system which is used on CNC machine tools based on controller, LabVIEW and related hardware of NI. This system is simple, user-friendly interface, functional, safe and reliable. It can be widely used on types of CNC machine tools. Through data acquisition and processing, it gives the performance of various aspects of machine diagnosis, and helps to improve the overall performance of CNC machine tools. The future of this system is bright and broad.%主要论述如何通过控制器、LabVIEW及NI相关硬件设备搭建能够应用在数控机床行业的多功能数据采集系统.该系统具有实现简单、界面友好、功能齐全、安全可靠等优点,可以广泛应用到各种类型的数控机床上.通过数据采集及处理,对机床各方面性能进行诊断分析,有利于提高数控机床的整体性能,应用前景广阔.

  12. Effective Location Acquisition Control Algorithms for the Location-Based Alert Services in Mobile Environments

    Directory of Open Access Journals (Sweden)

    So-Young Kang

    2010-01-01

    Full Text Available The location-based alert services can be regarded as the one of the most practical locationbasedservices. For the services, an alert service system for the services alerts mobile device users whenthey enter into or leave from predefined specific regions, and provides certain services previously askedby the users for special purposes such as security. For providing proper services the alert service systemshould acquire the location information of the users periodically. However, the system that handles thelocations of the users may face serious problems as the number of users increases fast. Hence it is acritical issue to properly adjust the time interval of location data acquisitions while maintaining theaccuracy of the services. In this paper we propose effective location acquisition algorithms; the speedbasedacquisition algorithm, the angle–based acquisition algorithm, and the hybrid algorithm combiningthe speed with the angle-based algorithms. We also present three grid-based acquisition algorithms inwhich a longer time interval is used when a user is not near the alert areas. The proposed algorithmscould reduce the amount of location information to be acquired based on the movement of the users. Theaverage numbers of location acquisitions of the speed-based, the angle–based, and the hybrid algorithmswere reduced by 19.2%, 35.8%, and 35.6% over the distance-based algorithm, respectively, while theymaintained the almost same level of accuracy. Among the grid-based algorithms, the grid-angleacquisition algorithm further improved the average number of acquisitions by 5.2% over the angle-basedalgorithm, which is 41.0% improvement over the distance-based algorithm. The experimental results alsoshow that all the grid-based algorithms showed almost equal accuracy.

  13. Wireless data acquisition system for IoT applications

    Directory of Open Access Journals (Sweden)

    C. Lung

    2013-06-01

    Full Text Available This paper presents an innovative implementation of a data acquisition, which is able to communicate with a chest belt in order to obtain the heart rate value and accelerometer data from a EZ Chronos watch. The main goal of the work presented is to implement an embedded system, which can be used in various life assisted or medical applications.

  14. Data acquisition systems for high energy Physics experiments

    International Nuclear Information System (INIS)

    We describe here the Data Acquisition Systems most frequently used in High Energy Physics experiments. This report begins with a brief description of the main elements of a typical signal processing chain, following with a detailed exposition of the four most popular instrumentation standards used in this kind of experimental: NIM, CAMAC, FASTBUS and VME. (Author) 9 refs

  15. Engineered barrier experiment. Power control and data acquisition systems

    International Nuclear Information System (INIS)

    The engineered barrier concept for the storage of radioactive wastes is being tested at almost full scale at CIEMAT facilities. A data acquisition and control is an element of this experiment. This system would be operating for next three years. (Author)

  16. 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...

  17. The data acquisition system for the TASSO experiment

    International Nuclear Information System (INIS)

    The TASSO experiment at PETRA uses a Norsk Data NORD-10S for monitoring and control of the experiment. Trigger rates of typically 1 to 10 Hz are accepted and data are sent via a high speed link to the Central DESY IBM Triplex for later off-line analysis. This data acquisition system is described. (author)

  18. Aerial data acquisition system for earth survey

    Science.gov (United States)

    Uhl, Bernd

    1990-11-01

    Zeiss, in cooperation with Niletus, have developed an airborne Data Recording and Control System using high resolution reconnaissance cameras combined with video tape recording. Sensors are installed in a Dornier DO-228 aircraft for special earth survey missions which provide forest damage assessment in mountainous regions. Sensors include KS-153A wide angle- and telelens camera configurations. A laser distance meter provides autofocus capability for the telelens camera. Flight and mission data are recorded on film and video for cross-reference purposes during photo-interpretation. Special photogrammetric interpretation equipment then produces detailed maps used to direct corrective activities.

  19. L-C Measurement Acquisition Method for Aerospace Systems

    Science.gov (United States)

    Woodard, Stanley E.; Taylor, B. Douglas; Shams, Qamar A.; Fox, Robert L.

    2003-01-01

    This paper describes a measurement acquisition method for aerospace systems that eliminates the need for sensors to have physical connection to a power source (i.e., no lead wires) or to data acquisition equipment. Furthermore, the method does not require the sensors to be in proximity to any form of acquisition hardware. Multiple sensors can be interrogated using this method. The sensors consist of a capacitor, C(p), whose capacitance changes with changes to a physical property, p, electrically connected to an inductor, L. The method uses an antenna to broadcast electromagnetic energy that electrically excites one or more inductive-capacitive sensors via Faraday induction. This method facilitates measurements that were not previously possible because there was no practical means of providing power and data acquisition electrical connections to a sensor. Unlike traditional sensors, which measure only a single physical property, the manner in which the sensing element is interrogated simultaneously allows measurement of at least two unrelated physical properties (e.g., displacement rate and fluid level) by using each constituent of the L-C element. The key to using the method for aerospace applications is to increase the distance between the L-C elements and interrogating antenna; develop all key components to be non-obtrusive and to develop sensing elements that can easily be implemented. Techniques that have resulted in increased distance between antenna and sensor will be presented. Fluid-level measurements and pressure measurements using the acquisition method are demonstrated in the paper.

  20. The data-acquisition and second level trigger system for the ZEUS calorimeter

    International Nuclear Information System (INIS)

    ZEUS and HERA are introduced in chapter 1 with emphasis on the ZEUS Calorimeter and the ZEUS trigger system. The analog and digital electronics developed for the readout of the Calorimeter signals, and the hardware for the Calorimeter Second Level Trigger and data-acquisition system, is described in chapter 2. Emphasis is put on the hardware developed at NIKHEF, which is based on the transputer as the main processing element. The ZEUS trigger and data-acquisition environment as well as the calibration procedures needed for the Calorimeter impose several requirements on the design of the data-acquisition system. The requirements, their implications for the design of the transputer network architecture and the design itself, are described in detail in chapter 3. The software developed for the Calorimeter data-acquisition is described in chapter 4. It includes both the software for the Calorimeter data-acquisition as that required for the calibration of the Calorimeter. First experiences with the CAL-SLT algorithms, obtained during the 1992 HERA running periods, are presented in chapter 5. Chapter 6 discusses the performance of the Calorimeter data-acquisition system. (orig.)

  1. A magnetic investigation of phase transitions for metal-hydrogen systems based on nickel by means of computer-aided data acquisition

    International Nuclear Information System (INIS)

    In the present thesis the magnetic behaviour of Nickel-based metal-hydrogen systems is investigated in relation to its background in metal physics, in order to get information on the formation and the decomposition of metal-hydrogen phases. The magnetic investigations are performed at the systems Ni-Cu-H and Ni-Cr-H with Cu up to 40 at% and Cr up to 7 at%. The differential susceptibility is measured during hydration and decomposition of hydrides and the connection between magnetic moment and hydrogen concentration is discussed. (BHO)

  2. 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)

  3. Control and Data Acquisition System for the Spanish Beamline (BM25) at the ESRF

    International Nuclear Information System (INIS)

    A new control and data acquisition system has been developed for BM25 Spanish Line at the ESRF. The system is based in VMEbus, Motorola PreP architecture and Linux Operating System and it's linked to a local ETHERNET network which provides the way of communicate with the servers (PC workstations). In these computers, the data are available for general usage in order to analyze them. The data acquisition consists of many channels connected to the VME crates mainly, independent between them, and fully programmable by drivers, CLUI's and GUI's interfaces, and a set of independent systems (embedded ones, PLCs, others) controlling the security aspects. This report is described in terms of their architecture, their electronic system to the process hard ware and the functionality and the application development facilities they provide using the software and the data acquisition. (Author) 18 refs

  4. Upgrade of a LabVIEW based data acquisition system for wind tunnel test of a 1/10 scale OH-6A helicopter fuselage

    OpenAIRE

    Lines, Philipp A.

    2003-01-01

    Approved for public release, distribution is unlimited For over half a century the NPS Aerolabʼ Low Speed Wind Tunnel located in Halligan Hall of the Naval Postgraduate school has served to provide students and faculty with meaningful aerodynamic data for research and problem analysis. New data acquisition hardware was installed three years ago but never fully verified, and contained no integrated software program to collect data from the strain-gauge balance pedestal. Existing National I...

  5. 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。

  6. 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

    International Nuclear Information System (INIS)

    A single-shot CCD-based data acquisition system for time-resolved photoelectron spectroscopy using an X-ray free-electron laser has been developed. The basic performance of the system is demonstrated using XFEL-induced and synchrotron-radiation-induced Ti 1s core-level spectroscopy. 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

  7. 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.

  8. Four-channel high speed synchronized acquisition multiple trigger storage measurement system

    International Nuclear Information System (INIS)

    A new storage measurement system based on the CPLD, MCU and FLASH (large-capacity flash memory) is proposed. The large capacity storage characteristic of the FLASH MEMORY is used to realize multi channel synchronized acquisition and the function of multiple records and read once. The function of multi channel synchronization, high speed data acquisition, the triggering several times, and the adjustability of working parameters expands the application of storage measurement system. The storage measurement system can be used in a variety of pressure and temperature test in explosion field. (authors)

  9. 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.

  10. Underwater Acoustic Signal Acquisition System Based on ZigBee and Fuzzy PID Control%采用 ZigBee 和模糊 PID 控制的水声信号采集系统

    Institute of Scientific and Technical Information of China (English)

    张国光

    2015-01-01

    In the research of underwater guidance weapons development and field test ,it needs to receive the signal ac‐quisition of underwater acoustic array ,records the data for collection .According to the need ,field data analysis and real‐time or offline processing are taken .It is important to analyze performance data to effectively improve guided weapons research of underwater acoustic signal acquisition system .An underwater acoustic signal acquisition system is proposed based on ZigBee and fuzzy PID control .The underwater acoustic signal is obtained with the ZigBee recognizer and identification model ,signal filtering and intermediate frequency amplifier design are taken ,and the effective suppression of interference noise is obtained . The experimental results show that the system has real‐time data acquisition performance ,and signal processing performance is good ,to improve the signal detection performance through the fuzzy PID control .Human‐computer interaction perform‐ance is good ,and it has good application value in underwater acoustic signal processing and information acquisition and other fields .%在水下制导武器的研究、开发、外场试验中,都需要采集水声基阵的接收信号,并实时记录采集数据,根据需要进行现场数据分析和实时或离线处理。研究水声信号采集系统对有效提高制导武器的数据分析性能具有重要意义。提出一种基于 ZigBee 和模糊 PID 控制的水声信号采集系统设计方案,通过 ZigBee 识别模型中的识别器获取 ZigBee 水声信号,进行信号滤波和中频放大设计,实现对干扰噪声的有效抑制。实验结果表明,设计的系统具有较好的实时数据采集和信号处理性能,通过模糊 PID 控制提高信号检测性能,系统的实时性和人机交互性好,在水声信号处理和信息采集等领域具有较好的应用价值。

  11. 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.

  12. The Dark Energy Camera Data Acquisition and Control System

    Science.gov (United States)

    Buckley-Geer, Elizabeth J.; Annis, J.; Bonati, M.; Eiting, J.; Elliot, A.; Haney, M.; Hanlon, W.; Honscheid, K.; Karliner, I.; Kuehn, K. W.; Kuhlmann, S. E.; Marshall, S.; Roodman, A. J.; Schalk, T.; Schumacher, G.; Thaler, J.; Wester, W.

    2011-01-01

    The Dark Energy Camera (DECam) data acquisition and control system is called the Survey Image System Process Integration (SISPI). Implemented as a distributed multi-processor system, SISPI consists of a set of processes that will coordinate and perform image acquisition and deliver images to the data management system for processing. Separate processes for instrument control, image building and analysis, image acquisition and observatory control are built on top of an infrastructure layer that provides message passing and communications. Additional system components include a flexible configuration system and the facility database. The command protocol is implemented in Python using a client-server design pattern derived from the SML and SCLN communications software developed at CTIO. A publish-subscribe model has been added to support the distribution of telemetry data and alarm messages. The design of the graphical user interfaces follows the Model-View-Controller approach to distinguish between the actual information and the graphical representation of the data. We will present the software architecture of the SISPI system and report on the current status of the project.

  13. Experiment data acquisition and analysis system. Vol. 1

    International Nuclear Information System (INIS)

    The Experiment Data Acquisition and Analysis System EDAS was created to acquire and analyze data collected in experiments carried out at the heavy ion accelerator UNILAC. It has been available since 1975 and has become the most frequently used system for evaluating experiments at GSI. EDAS has undergone constant development, and the many enhancements make this completely revised third edition of the EDAS manual necessary. EDAS consists of two sub-systems: GOLDA for experimental data acquisition on PDP-11's and SATAN mainly for off-line analysis in replay mode on large IBM mainframes. The capacity of one IBM 3081 CPU is mainly dedicated to EDAS processing and is almost fully utilized by this application. More than 200 users from GSI as well as from collaborating laboratories and universities use SATAN in more than 100 sessions daily needing 10 to 20 hours of user CPU time. EDAS is designed as an open system. (orig./HSI)

  14. 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

  15. 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

  16. WRPA: A system for relational paraphrase acquisition from Wikipedia

    OpenAIRE

    Vila Rigat, Marta; Rodríguez Hontoria, Horacio; Martí Antonin, M. Antònia

    2010-01-01

    In this paper we present WRPA, a system for Relational Paraphrase Acquisition from Wikipedia. WRPA extracts paraphrasing patterns that hold a particular relation between two entities taking advantage of Wikipedia structure. What is new in this system is that Wikipedia's exploitation goes beyond infoboxes, reaching itemized information embedded in Wikipedia pages. WRPA is language independent, assuming that there exists Wikipedia and shallow linguistic tools for that particular language, and a...

  17. 一种基于 Android 平台数据采集系统的设计与实现%Design and Implementation of a Data Acquisition System Based on the Android Platform

    Institute of Scientific and Technical Information of China (English)

    王柯; 马宏斌

    2014-01-01

    针对快速变化的地理环境实体的数据采集作业,首先基于Android平台的二次开发技术进行了研究,分析了Android平台的开发框架和开发环境搭建流程;然后,针对数据采集作业进行了需求分析,设想了一种基于Android平台的数据采集系统,提出了该系统的逻辑设计和功能模块设计;最后,对所设想的系统进行了技术验证和效果实现。该系统的设计与实现对数据采集作业方式具有重要的技术参考价值。%In view of the rapid changes on the data collection work of geographical entity, firstly, the paper studies the secondary de-velopment technology based on the Android platform, analyzing the development framework and the development environment to build process of the Android platform.Then, aiming at the demand analysis on the data collection work, imagines a data acquisition system based on the Android platform, and puts forward the logical design and the function module design of the system.Finally, makes the technical verification and effect implementation on the envisioned system .The design and implementation of the system has important technology reference value for the data acquisition practices.

  18. 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.

  19. New data acquisition system for the lujan center

    International Nuclear Information System (INIS)

    To meet the data acquisition requirements for six new neutron scattering instruments at the Los Alamos Science Center (LANSCE), we are building systems using Web tools, commercial hardware and software, software developed by the controls community, and custom hardware developed by the neutron scattering community. To service these new instruments as well as seven existing instruments, our data acquisition system needs common software and hardware core capabilities and the means to flexibly integrate them while differentiating the needs of the diverse instrument suite. Neutron events are captured and processed in VXI modules while controls for sample environment and beam line setup are processed with PCs. Typically users access the system through web browsers. (author)

  20. 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。

  1. 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.

  2. Data acquisition system for the Pelletron electron accelerator

    International Nuclear Information System (INIS)

    In this work, a system is developed that allows to know and view of immediate manner the conditions occurred during the operation of the Pelletron. This is carried out by means of the design of a data acquisition system which displays in graphic form, in the screen of a computer, the operation conditions like pressure of the tank, current of the electron beam, voltage in the inductors of the elctrostatic generator, level of produced radiation, etc., all of this parameters determine the behavior of the accelerator. The hardware of the system includes the design and construction of conditioning and transmission circuits used to send the information to an interface board that allows th communication between the analog world and the computer. In this case, the utilized board is the AT-MIO-16L-25, that is a high-performance multifunction analog, digital and timing input/output (I/O) board for the IBM PC/AT and compatibles. The software implicates the design of the necessary programs to manipulate the interface board, for the processing and presentation of information in the screen of the computer and also for the storage of the acquired data in a permanent medium. In this case, a relatively new tool, known like Virtual instrumentation is utilized. Concretely, the LabVIEW programming software package is used (Laboratory Virtual Instrument Engineering Workbench), which is designed for applications in instrumentation and control. This programming package gives the necessary elements for the analysis and processing of the acquired data. The system is developed in base to the requirements done for the users and designers of the Pelletron. (Author)

  3. 应用GPRS的洪泽湖环境数据在线采集系统设计%GPRS Based Designs of Environment Online Data Acquisition System of Hongze Lake

    Institute of Scientific and Technical Information of China (English)

    王立飞; 宋志程; 徐斌; 付丽辉

    2014-01-01

    The environment online data acquisition system of Hongze Lake based on GPRS was designed based on detecting the temperature, pH and dissolved oxygen of water, and using SOPC technology in a FPGA chip to construct a NiosII micro-processor and its peripheral interface circuit. A custom microprocessor system consistent with the task demand of system was formed. After the NiosII microprocessor converted temperature, pH and dissolved oxygen parameters read by the Modbus pro-tocol, the data were sent to GPRS mobile data transmission module for data transmission, and displayed in numerical and waveform by remote data acquisition server. The wireless data acquisition mode’ construction and operation cost was low, with advantages of wide monitoring range, high real-time performance. The construction of NiosII microprocessor made the system easy to upgrade, which could better meet the requirements of water environment monitoring.%设计一种基于GPRS的洪泽湖环境数据在线采集系统,以检测洪泽湖水质温度、pH和溶氧量为基础,使用SOPC技术在FPGA芯片上构建一个Nios II微处理器及其外围电路的接口电路,从而形成一个与系统任务需求相一致的自定义微处理器系统。由Nios II微处理器将使用Modbus协议读取的水质温度、pH和溶氧量参数经过协议转换后送GPRS移动数据传输模块进行数据远传,同时远程数据采集服务器将其以数值和波形方式进行显示。这种无线数据采集方式的建设、运营成本低,监控范围宽,实时性高,而NiosII微处理器的构建使得整个系统易于升级换代,能更好地满足水环境监测的需求。

  4. 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.

  5. Data Acquisition and Database Management System for Samsung Superconductor Test Facility

    OpenAIRE

    Chu, Y; Baek, S.; Yonekawa, H; Chertovskikh, A.; Kim, M.; J.S. Kim; K. Park; Baang, S.; Chang, Y.; Kim, J. H.; Lee, S.; Lim, B; Chung, W.; Park, H.; Kim, K

    2001-01-01

    In order to fulfill the test requirement of KSTAR (Korea Superconducting Tokamak Advanced Research) superconducting magnet system, a large scale superconducting magnet and conductor test facility, SSTF (Samsung Superconductor Test Facility), has been constructed at Samsung Advanced Institute of Technology. The computer system for SSTF DAC (Data Acquisition and Control) is based on UNIX system and VxWorks is used for the real-time OS of the VME system. EPICS (Experimental Physics and Industria...

  6. Development of the embedded spatial data acquisition system based on smart phones%基于智能手机的嵌入式空间数据采集系统研制

    Institute of Scientific and Technical Information of China (English)

    蔡国林; 宋旭东; 张奥丽; 杨骏

    2015-01-01

    随着北斗定位系统、GIS、网络通讯及智能设备等技术的快速发展,基于智能手机的嵌入式移动GIS将具有高精度定位、野外数据采集、实时动态数据传输等功能。结合嵌入式GIS产品ArcGIS for Android、无线通讯技术、GPS技术、移动计算机设备等,研究人员研发了一个基于智能手机的嵌入式空间数据采集系统。该系统具有GPS定位、野外数据采集、坐标转换、数据预处理、数据存储与输出等功能,可为国土、测绘及电力等部门野外空间数据的快速获取提供技术支撑。%With the rapid development of the Beidou positioning system, GIS, network communications and smart devices, the embedded mobile GIS based on smart phones would have some remarkable functions, such as a high-precision positioning, field data acquisition, and real-time dynamic data transmission. In this paper, ArcGIS for Android of embedded GIS products, wireless communication technology, GPS technology and mobile computing equipment are combined with each other, and an embedded spatial data acquisition system based on smart phones is developed. This system has many functions, such as GPS positioning, field data collection, coordinate conversion, data pre-processing, data storage and output, and can provide technical support for land, mapping, power and other sectors in terms of rapid access to spatial data.

  7. 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 .

  8. 基于LabVIEW的颤振激励信号生成与测试系统研究%Design of excitation signal generation and data acquisition system for flutter test based on LabVIEW

    Institute of Scientific and Technical Information of China (English)

    冉景洪; 赵玲; 季辰; 刘子强

    2011-01-01

    基于NI公司的数据采集硬件设备,结合跨音速风洞颤振试验特点,用LabVIEW语言为颧振试验设计了一套激励信号生成与多通道同步动态信号采集系统.设计的系统成功实现了新型IEPE传感器和传统电荷式传感器兼容、加速度信号与应变信号同步采集、激励信号生成与多通道数据采集同步、直接内存读取数据、数据尤限时存盘、信号实时显示等方面的功能.经试验验证,该系统设计方案完全满足颤振试验数据采集的要求,获得良好的测试结果,在多功能同步采集系统设计方丽取得了技术性应用成果.%Based on the characteristics of flutter test in wind tunnel and NI DAQ equipments, a dynamic synchronous data acquisition (DAQ) system with excitation signal generation was designed for flutter test based on LabVIEW.The system can realized several functions, such as compatibility for IEPE transducer and traditional charge transducer, synchronous data acquisition of acceleration signal and strain signal, synchronous signal generation and DAQ, direct memory access, unlimited data streaming as well as dynamic signal real-time display.The validation test showed that the designed system could meet the requirements of flutter test and it was a successful technique application of signal generation and multi-channel dynamic DAQ for flutter test in wind tunnel.

  9. A high-throughput data acquisition architecture based on serial interconnects

    International Nuclear Information System (INIS)

    This paper describes a data acquisition architecture based on a simple, high-bandwidth event builder and serial data transmission. Extensive parallelism allows collection and building of event data at combined rates of several Gigabytes per second. Many of the concepts used in this system are routinely employed in the telecommunications industry

  10. A Novel Approach to Synchronous Image Acquisition from Near Infrared Camera in Optical-Surgery Navigation System

    Directory of Open Access Journals (Sweden)

    Rongqian Yang

    2015-10-01

    Full Text Available The positional accuracy of an optical-surgery navigation system is significantly affected by two factors. One is the acquisition synchronism of the two cameras in the system, and the other is the phase difference in image transmission acquired by these cameras. To further enhance image-acquisition synchronism, a field programmable gate array (FPGA- based synchronous-acquisition method is introduced in this paper. The FPGA control circuit board is independently designed to equalize the length of all data lines, thereby reducing differences in image transmission. Two Complementary Metal Oxide Semiconductors (CMOS image sensor chips of MT9V032 are also adopted to enable synchronous acquisition in passive acquisition mode. Moreover, the control of exposure time and frame number of MT9V032 under the passive acquisition mode is discussed. Finally, the proposed method is validated and the experimental results the two cameras show h

  11. Design of high speed data acquisition system based on S3C2440 and AD9248%基于S3C2440和AD9248的高速采集系统的设计

    Institute of Scientific and Technical Information of China (English)

    张自嘉; 徐向明

    2011-01-01

    A high speed data acquisition system is designed based on a high-speed A/D, FIFO and the ARM9. ARM9 is used to control A/D's conversion and FIFO's read and write, and large-capacity onboard data storage, as well as to achieve longer continuous acquisition. At the same time the design of network interface and USB interface to the preservation and transmission of data, GPS timing module interface to achieve data acquirement multiple sites at the same time.%设计了一个利用高速A/D、FIFO以及ARM9实现的高速数据采集系统.通过ARM9控制高速A/D转换和FIFO的读写,并采用大容量的板载数据存储器,可以实现较长时间的连续采集.设计了网络接口和USB接口实现数据的保存和传输,并设计了GPS授时模块接口以实现多个站点的同时数据采集.

  12. 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。

  13. Evolution of the ATLAS Trigger and Data Acquisition System

    CERN Document Server

    Pozo Astigarraga, M E; The ATLAS collaboration

    2014-01-01

    ATLAS is a Physics experiment that explores high-energy particle collisions at the Large Hadron Collider at CERN. It uses tens of millions of electronics channels to capture the outcome of the particle bunches crossing each other every 25 ns. Since reading out and storing the complete information is not feasible (~100 TB/s), ATLAS makes use of a complex and highly distributed Trigger and Data Acquisition (TDAQ) system, in charge of selecting only interesting data and transporting those to permanent mass storage (~1 GB/s) for later analysis. The data reduction is carried out in two stages: first, custom electronics performs an initial level of data rejection for each bunch crossing based on partial and localized information. Only data corresponding to collisions passing this stage of selection will be actually read-out from the on-detector electronics. Then, a large computer farm (~17 k cores) analyses these data in real-time and decides which ones are worth being stored for Physics analysis. A large network a...

  14. Evolution of the ATLAS Trigger and Data Acquisition System

    CERN Document Server

    Pozo Astigarraga, M E; The ATLAS collaboration

    2015-01-01

    ATLAS is a Physics experiment that explores high-energy particle collisions at the Large Hadron Collider at CERN. It uses tens of millions of electronics channels to capture the outcome of the particle bunches crossing each other every 25 ns. Since reading out and storing the complete information is not feasible (~100 TB/s), ATLAS makes use of a complex and highly distributed Trigger and Data Acquisition (TDAQ) system, in charge of selecting only interesting data and transporting those to permanent mass storage (~1 GB/s) for later analysis. The data reduction is carried out in two stages: first, custom electronics performs an initial level of data rejection for each bunch crossing based on partial and localized information. Only data corresponding to collisions passing this stage of selection will be actually read-out from the on-detector electronics. Then, a large computer farm (~17 k cores) analyses these data in real-time and decides which ones are worth being stored for Physics analysis. A large network a...

  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. 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.

  17. 脱粒滚筒圆柱度数据采集系统设计-基于 VB 串口通信%Threshing Drum Cylindrical Degree Data Acquisition System Design-Based on VB Serial Communication

    Institute of Scientific and Technical Information of China (English)

    荣耀; 苑严伟; 周利明; 张俊宁; 董鑫

    2016-01-01

    In order to solve the problem of low efficiency and great error in cylindrical degree detection, this paper puts forward a method of threshing drum cylindrical degree data acquisition system design based on VB serial communication, first the system realize the laser displacement sensor and host computer communication through program, then the laser displacement sensor collect the data of outer cylinder, and finally deal with the data.Experiments show that the system can complete the acquisition, storage and analysis of data within 5min, the error of collected data and real value is in the range of ±0.9 mm, the system has a simple interface, convenient operation, and wide range of application.%针对稻麦收获机脱粒滚筒圆柱度检测效率低、误差大的现状,提出了一种基于 VB 串口通信的脱粒滚筒圆柱度数据采集系统设计方法,首先通过程序实现激光位移传感器与上位机的通信,激光传感器再对脱粒滚筒外圆柱面进行数据采集,最后对采集的数据进行处理。实验表明:该系统能在5 min 以内完成数据的采集、存储和分析,采集到的数据与真实值的误差在±0.9 mm 范围内,采集系统界面简洁、操作方便,应用范围十分广泛。

  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. 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

  20. Multi-Channel Data Acquisition System with Absolute Time Synchronization

    CERN Document Server

    Włodarczyk, Przemysław; Budker, Dmitry; Lipiński, Marcin

    2013-01-01

    A low-cost, stand-alone Global-Positioning-System-time-synchronized data acquisition system is described. The constructed prototype allows recoding up to four analog signals with a 16-bit resolution in variable ranges and a maximum sampling rate of 1000 S/s. Additionally, two digital readouts of external sensors can be acquired. A complete data set 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 0.2 {\\mu}s. The device is envisioned for the use in a global distributed sensor network (the Global Network of Optical Magnetometers for Exotic physics - GNOME), whose aim is to search for new particles and interactions.

  1. 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.

  2. Optimal Acquisition and Inventory Control for a Remanufacturing System

    Directory of Open Access Journals (Sweden)

    Zhigang Jiang

    2013-01-01

    Full Text Available Optimal acquisition and inventory control can often make the difference between successful and unsuccessful remanufacturing. However, there is a greater degree of uncertainty and complexity in a remanufacturing system, which leads to a critical need for planning and control models designed to deal with this added uncertainty and complexity. In this paper, a method for optimal acquisition and inventory control of a remanufacturing system is presented. The method considers three inventories, one for returned item and the other for serviceable and recoverable items. Taking the holding cost for returns, recoverable and remanufactured products, remanufacturing cost, disposal cost, and the loss caused by backlog into account, the optimal inventory control model is established to minimize the total costs. Finally, a numerical example is provided to illustrate the proposed methods.

  3. Remote multipoint temperature acquisition system based on MATLAB%基于MATLAB的远程多点温度采集系统

    Institute of Scientific and Technical Information of China (English)

    和晓杰; 李世中

    2014-01-01

    本文利用AT89C51和温度传感器DS18B20,及RS485串口通信技术,来实现远距离温度的采集。通过MATLAB的GUI设计,构建控制界面,实现温度曲线的绘制,高低温报警,数据存储,温度变化分析等功能。%In this paper,by using AT89C51 and the temperature sensor DS18B20,and RS485 serial communication technology,to realize the remote temperature acquisition. Through MATLAB GUI design and build a control interface,realize the temperature curve drawing,high and low temperature alarm,data storage,temperature variation analysis,and other functions.

  4. 基于LabVIEW的安全阀型式试验数据采集系统%The Data Acquisition System Based on LabVIEW of Safety Valve Type Testing

    Institute of Scientific and Technical Information of China (English)

    谢青延; 谢常欢; 孙琦

    2014-01-01

    Based on the relationship between lift and the other performances of safety valve, the safety valve type testing data acquisition system charts lift, pressure and lfow capacity in one diagram using the same X-axis but different Y-axis. According to the different states of lift, performances of safety valve are ifgured out.%安全阀型式试验数据采集系统结合安全阀开启高度与其他性能指标的关系,创新性地将开启高度、压力和流量三组数据整合到同一个曲线监控图中分别显示,根据开启高度的不同状态读取相应试验数据,从而得到安全阀各项性能指标。

  5. Dopamine systems adaptation during acquisition and consolidation of a skill

    OpenAIRE

    Wolfgang H. Sommer; Costa, Rui M.; Hansson, Anita C.

    2014-01-01

    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...

  6. 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.

  7. Increasing Interactivity and Authenticity of Chemistry Instruction through Data Acquisition Systems and Other Technologies

    Science.gov (United States)

    Milner-Bolotin, Marina

    2012-01-01

    Interactivity and inquiry-based learning science are effective ways of helping students overcome their perception of chemistry as an alien and abstract topic and instead approach the subject as a creative way of understanding ideas and applying mastered concepts to new contexts. Data acquisition systems are an extremely useful form of educational…

  8. Design of Wireless Multi-point Temperature Acquisition System Based on ZFO1 Data Transmission Module%基于ZF01数传模块的无线多点温度采集系统设计

    Institute of Scientific and Technical Information of China (English)

    张洁琼; 徐东明; 付秀华; 田野; 邸旭

    2011-01-01

    The traditional multi-point temperature measurements have many defects, such as the complex interconnection, the high demand for measurement environment. Because of the advantages of easy installation, small impact on the measuring environment, network flexible, the wireless multi-point temperature acquisition system using wireless communication technology has wide application value in the environment which needs multi-point temperature acquisition. This paper describes a wireless multi-point temperature acquisition system controlled by single chip microcomputer (SCM ) based on wireless data transmission module ZF01 and digital temperature sensor DS18B20, and we also provide the system block diagram, principle diagram of the hardware circuit and the software flow chart. This system uses a TFT liquid crystal display touch screen as the man-machine interface, and SD card to save measure data. It is very easy to use, and has achieved good effect through the actual application.%传统的多点温度测量存在着连线复杂、对测量环境要求高的缺点.采用无线通信技术构成的无线多点温度测量系统,由于具有安装方便、对测量环境影响小、组网灵活等优点,在需要多点温度测量的场合具有广泛的应用价值.本文详细介绍了单片机控制的基于无线数据传输模块ZF01和数字温度传感器DS18B20的无线多点温度采集系统,给出了系统框图、硬件电路原理图及软件流程图.本系统采用TFT液晶触摸屏作为人机界面,采用SD卡存储测量数据,使用便捷,通过实际应用,取得了良好的效果.

  9. 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.

  10. Design of Data Acquisition and Monitoring System Based on ZigBee%基于ZigBee的数据采集监测系统设计

    Institute of Scientific and Technical Information of China (English)

    汪华斌; 罗中良

    2011-01-01

    为采集和监测生产现场中室内环境温度和湿度的数据,提出一种基于ZigBee无线传感器网络技术的解决方案.通过ZigBee星型网络的实测,表明系统具有稳定的采集效果,同时有效减少线缆连接,具有安装方便、应用灵活、易于扩展等优点.为ZigBee无线传感器网络的应用研究提供科学依据.%In order to collect and monitor the data of indoor environment temperature and humidity in production site, this paper proposes a kind of technical solution based on ZigBee wireless sensor network. The experimental results of ZigBee star network system show that the system has a stable collecting effect, and the characteristics of fixing easily, using flexibly, economy, expanding easily and so on. It offers a scientific ground for application research on wireless sensor network.

  11. Research of bunch by bunch data acquisition system in SSRF

    International Nuclear Information System (INIS)

    Background: In order to improve the synchrotron performance in the constant current mode, attentions should be paid to problems such as non-linear beam dynamics, broadband beam impedance, and position disturbance, etc. Purpose: To address these problems, a bunch by bunch data acquisition system (BBDAQ) is implemented for real-time bunch position monitoring, as well as the off-line data analysis for the Shanghai Synchrotron Radiation Facility (SSRF) storage ring. It can be applied to optimize new equipment impedance, filling pattern, injection mode, and raise threshold value of current instability. Methods: This BBDAQ developed at SSRF consists a RF front end to filter and expand bunch signal to 2 ns, a data acquisition and processing card to sample bunch signal with four 125-MHz ADCs, which make an equivalent 500-MHz sampling rate, and the EPICS for post-processing to give bunch position and tune value. Results: Online experimental results show that the system can measure bunch by bunch position and tune value successfully. Conclusion: The development of bunch by bunch data acquisition system provides an efficient tool to analyze beam impedance, coupling instability, nonlinear dynamics. It makes further improvement of synchrotron performance visible. (authors)

  12. 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.

  13. 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

  14. Design of data acquisition system based on TMS320F2812%基于TMS320F2812的数据采集系统的设计

    Institute of Scientific and Technical Information of China (English)

    陈超波; 何宁; 袁晓伟

    2011-01-01

    To meet the requirement of practical production at oil field and master the parameter variations of internal well fully, a data acquisition system based on TMS320F2812 is proposed. The design applies abundant internal devices of DSP to accomplish hardware modules of data acquisition system, complete USB2. 0 protocol to improve data transmission under the cooperation of SCI interface and CH375, and also design FIR digital filter to ensure the effective of data processing results in software. The practice has proved that this system meets the requirement and has broad application prospects.%为了满足油田实际生产的要求,全面掌握油井内部的参数变化情况,提出了一种基于TMS320F2812的数据采集系统的设计方案.该设计方案使用了DSP丰富的片内外设,构建了数据采集系统的硬件电路模块,并利用SCI接口与CH375相互配合实现了USB2.0协议,提高了系统的数据传输速率,而软件部分则设计了FIR数字滤波器,明显增强了数据处理结果的有效性.实践证明,该系统能够满足生产测井的需要,具有广阔的应用前景.

  15. Research and design of portable photoelectric rotary table data-acquisition and analysis system

    Science.gov (United States)

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

    2015-02-01

    Photoelectric rotary table as the main test tracking measurement platform, widely use in shooting range and aerospace fields. In the range of photoelectric tracking measurement system, in order to meet the photoelectric testing instruments and equipment of laboratory and field application demand, research and design the portable photoelectric rotary table data acquisition and analysis system, and introduces the FPGA device based on Xilinx company Virtex-4 series and its peripheral module of the system hardware design, and the software design of host computer in VC++ 6.0 programming platform and MFC package based on class libraries. The data acquisition and analysis system for data acquisition, display and storage, commission control, analysis, laboratory wave playback, transmission and fault diagnosis, and other functions into an organic whole, has the advantages of small volume, can be embedded, high speed, portable, simple operation, etc. By photoelectric tracking turntable as experimental object, carries on the system software and hardware alignment, the experimental results show that the system can realize the data acquisition, analysis and processing of photoelectric tracking equipment and control of turntable debugging good, and measurement results are accurate, reliable and good maintainability and extensibility. The research design for advancing the photoelectric tracking measurement equipment debugging for diagnosis and condition monitoring and fault analysis as well as the standardization and normalization of the interface and improve the maintainability of equipment is of great significance, and has certain innovative and practical value.

  16. Data acquisition and processing system of the electron cyclotron emission imaging system of the KSTAR tokamak

    International Nuclear Information System (INIS)

    A new innovative electron cyclotron emission imaging (ECEI) diagnostic system for the Korean Superconducting Tokamak Advanced Research (KSTAR) produces a large amount of data. The design of the data acquisition and processing system of the ECEI diagnostic system should consider covering the large data production and flow. The system design is based on the layered structure scalable to the future extension to accommodate increasing data demands. Software architecture that allows a web-based monitoring of the operation status, remote experiment, and data analysis is discussed. The operating software will help machine operators and users validate the acquired data promptly, prepare next discharge, and enhance the experiment performance and data analysis in a distributed environment.

  17. 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.

  18. SIDA - System for importation distribution and acquisition of radioisotope - User manual

    International Nuclear Information System (INIS)

    The SIDA manual (system for importation, distribution and acquisition of radioisotopes) is presented. The SIDA is a system of consult and update to control importation and distribution of radioisotopes in the country. It allows to accompany processes from importation requirement to distribution of radioisotopes, executing the accountancy of I-125, which is distributed for several interprises. The system was developed in CLIPPER87 using DBASE III PLUS data base management. (M.C.K.)

  19. 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

  20. 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.

  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. 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。

  3. 基于卫星通信的海洋气象数据采集系统设计%Marine Meteorological Data Acquisition System Based on Satellite Communication Network

    Institute of Scientific and Technical Information of China (English)

    谭鉴荣; 吕雪芹; 郎东梅; 陆土金

    2013-01-01

    根据我国海洋综合气象监测装备建设网点不继扩大和加密的现状,依靠现有的卫星通信网络,利用其覆盖范围广、通信稳定、实时在线和维持经费等优势,设计一种基于卫星通信网络的海洋气象数据采集系统.介绍该系统的数据采集结构和功能,智能处理终端的硬件组成,硬件电路芯片选型与使用;介绍系统软件的控制和编制方法,简述在可视化编程语言Microsoft Visual Studi0 6.0集成包环境下开发海洋气象数据采集系统软件的步骤;讨论基于我国北斗卫星通信网络的海洋气象数据采集系统的实际应用情况.%The marine meteorological data acquisition system is designed based on the satellite communication network with the advantages of extensive range coverage, real-time online, high-quality communication, and low maintenance expense, according to the current situation of comprehensive marine meteorological monitoring equipment. The system architecture and functions of the system are demonstrated in detail, in the aspects of both hardware and software. The crucial techniques of the system hardware architecture include the structure of remote terminal unit and the usage of circuit chip. The system development methodology is elaborated on the basis of the Microsoft Visual Studio 6. 0 integrated package environment. The practical application of the marine meteorological data acquisition system based on the Bcidou satellite communication network is introduced.

  4. 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。

  5. System design description for mini-dacs data acquisition and control system

    International Nuclear Information System (INIS)

    This document describes the hardware computer system, for the mini data acquisition and control system (DACS) that was fabricated by Los Alamos National Laboratory (LANL), to support the testing of the spare mixer pump for SY-101

  6. 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.

  7. 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.

  8. 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.

  9. Signal distortion from microelectrodes in clinical EEG acquisition systems

    Science.gov (United States)

    Stacey, William C.; Kellis, Spencer; Patel, Paras R.; Greger, Bradley; Butson, Christopher R.

    2012-10-01

    Many centers are now using high-density microelectrodes during traditional intracranial electroencephalography (iEEG) both for research and clinical purposes. These microelectrodes are FDA-approved and integrate into clinical EEG acquisition systems. However, the electrical characteristics of these electrodes are poorly described and clinical systems were not designed to use them; thus, it is possible that this shift into clinical practice could have unintended consequences. In this study, we characterized the impedance of over 100 commercial macro- and microelectrodes using electrochemical impedance spectroscopy (EIS) to determine how electrode properties could affect signal acquisition and interpretation. The EIS data were combined with the published specifications of several commercial EEG systems to design digital filters that mimic the behavior of the electrodes and amplifiers. These filters were used to analyze simulated brain signals that contain a mixture of characteristic features commonly observed in iEEG. Each output was then processed with several common quantitative EEG measurements. Our results show that traditional macroelectrodes had low impedances and produced negligible distortion of the original signal. Brain tissue and electrical wiring also had negligible filtering effects. However, microelectrode impedances were much higher and more variable than the macroelectrodes. When connected to clinical amplifiers, higher impedance electrodes produced considerable distortion of the signal at low frequencies (60 Hz), which caused significant changes in amplitude, phase, variance and spectral band power. In contrast, there were only minimal changes to the signal content for frequencies above 100 Hz. In order to minimize distortion with microelectrodes, we determined that an acquisition system should have an input impedance of at least 1 GΩ, which is much higher than most clinical systems. These results show that it is critical to account for variations

  10. A DSP based data acquisition module for colliding beam accelerators

    International Nuclear Information System (INIS)

    In 1999, the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory will accelerate and store two beams of gold ions. The ions will then collide head on at a total energy of nearly 40 trillion electron volts. Attaining these conditions necessitates real-time monitoring of beam parameters and for this purpose a flexible data acquisition platform has been developed. By incorporating a floating point digital signal processor (DSP) and standard input/output modules, this system can acquire and process data from a variety of beam diagnostic devices. The DSP performs real time corrections, filtering, and data buffering to greatly reduce control system computation and bandwidth requirements. We will describe the existing hardware and software while emphasizing the compromises required to achieve a flexible yet cost effective system. Applications in several instrumentation systems currently construction will also be presented

  11. 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.

  12. Data acquisition and management system for a nuclear processes simulator

    International Nuclear Information System (INIS)

    In the development of this work (Data acquisition and management system for a simulator of nuclear processes (SAMAD)), is important to mention the main modules that involve the operation of the same one. At the beginning it was necessary to contemplate the possible programming languages, as well as the compatibility and handling easiness among them. The used languages to be able to land the contemplated ideas are: C++, PHP, HTML, as well as the My SQL database manager. After this it was designed the database (DB), which contains the tables of each one of the components, this according to the enter file type of the RELAP5 code that will be use for each simulation, as well as, tables that will allow us to relate and to maintain the control of the information supplied to the DB. Once created the database is interacting with it through an application program based on PHP (Preprocessor). The application basically consists, in extracting the data from each one of the components to work in that moment, that is to say, to obtain the data of the enter file, as well as, to depurate the data, excluding comments. The preprocessor gives bigger easiness to place the data in the DB. Also, it was developed an graphic interface that allows to register variables to the DB, depending from the unfolding to visualize. Another application that has been implemented is the Data Collector that has as function, to obtain in a direct way the data of the display variables of the RELAP5 code, with the purpose of storing them in the DB, this will be carry out in real time and it was updated in a very small time period. (Author)

  13. 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... are in support of contingency, humanitarian, or peacekeeping operations, or to facilitate defense...) At or below the simplified acquisition threshold; or (ii) In support of contingency, humanitarian...

  14. 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.

  15. 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.

  16. 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...

  17. 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...

  18. 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.

  19. Floating data acquisition system for microwave calorimeter measurements on MTX

    International Nuclear Information System (INIS)

    A microwave calorimeter has been designed for making 140-GHz absorption measurements on the MTX. Measurement of the intensity and spatial distribution of the FEL-generated microwave beam on the inner wall will indicate the absorption characteristics of the plasma when heated with a 140 GHz FEL pulse. The calorimeter works by monitoring changes of temperature in silicon carbide tiles located on the inner wall of the tokamak. Thermistors are used to measure the temperature of each tile. The tiles are located inside the tokamak about 1 cm outside of the limiter radius at machine potential. The success of this measurement depends on our ability to float the data acquisition system near machine potential and isolate it from the rest of the vault ground system. Our data acquisition system has 48 channels of thermistor signal conditioning, a multiplexer and digitizer section, a serial data formatter, and a fiber-optic transmitter to send the data out. Additionally, we bring timing signals to the interface through optical fibers to tell it when to begin measurement, while maintaining isolation. The receiver is an HP 200 series computer with a serial data interface; the computer provides storage and local display for the shot temperature profile. Additionally, the computer provides temporary storage of the data until it can be passed to a shared resource management system for archiving. 2 refs., 6 figs

  20. 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。

  1. Data Acquisition, Monitoring and Control System Based on C8051F040 Microchip%C8051F040单片机的数据采集与控制系统设计

    Institute of Scientific and Technical Information of China (English)

    史荣燕; 许晖; 康健; 陈婉荣

    2013-01-01

    介绍了一种基于C8051F040单片机的数据采集和监测控制系统,给出了系统的总体设计方案,对各组成电路模块进行了详细的设计,编写了相应的上位软件对系统运行进行监控.系统可以工作在手动、软手动和自动状态.经过长时间的现场测试,系统工作稳定,能够很好满足供水现场的控制需求.%A data acquisition,monitoring and control system based on C8051F040 was intro duced.The general scheme of the system was giv en,and modules of constituted circuits were de tailedly presented.The software of position ma chine was written for monitoring.The system can be used in three modes,Manual,Soft manual and Automation.Through a series of field testing,It works steadily and can meet the control needs well.

  2. 低速风洞无线数据采集与处理系统设计%DESIGN OF DATA ACQUISITION AND PROCESSING SYSTEM FOR LOW- SPEED WIND TUNNEL BASED ON WIRELESS TECHNOLOGY

    Institute of Scientific and Technical Information of China (English)

    郭旺; 陈智; 宣传忠; 张永

    2012-01-01

    The data acquisition and processing aystem for the low - speed wind tunnel is introduced in this paper. Based on the theo-ries of modem test, a set of hardware and software system of high precision data collection, stable transmission and reception on wireless network has been developed. And the software system has realized data analysis, wind speed calibration, curves of real - time wind speed, and history data replay via VC + + programming language. The experiment results demonstrate the effectiveness of the system.%本文综合介绍了风洞数据采集和处理,并在现代测试技术理论的基础上,对风洞数据无线采集、传输和接收进行了设计,最后利用Visual C++语言平台开发出一套实现数据采集分析及处理的软件系统,系统具有很好的使用效果.

  3. Design and Implementation of Wireless Temperature Acquisition System Based on SimpliciTI%基于SimpliciTI协议的无线温度采集系统的设计与实现

    Institute of Scientific and Technical Information of China (English)

    季国鹏; 郭晋楠; 葛立峰

    2012-01-01

    A scheme of wireless temperature acquisition was designed based on a SimpliciTI communication protocol for the effective information collection from temperature sensors. The hardware platform was established by using MSP430 microcontroller, CC1100 RF transceiver and monobus digital temperature sensor DS18B20,and a star-type wireless temperature acquisition network was built with the protocol and the data acquired were processed and displayed by using LabVIEW virtual instrument technique in real-time. The experimental results indicate that the system is robust,and is able to collect ambient temperature accurately. It has the merits of low-power,low-cost and easy networking.%为了实施有效的无线温度采集,设计了一种基于SimpliciTI通信协议的无线温度采集方案.该方案采用MSP430微处理器、CC1100射频收发器和单总线数字温度传感器DS18B20进行硬件平台的搭建,并利用此协议组建了星型无线温度采集网络,并由LabVIEW虚拟仪器技术实时处理和显示采集的温度.试验表明,该系统运行稳定,能准确采集环境温度,具有低能耗、低成本和易组网等优点.

  4. 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.

  5. 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.

  6. Design of the control and data acquisition system for SPICA II

    International Nuclear Information System (INIS)

    The main features of the computerized control and data acquisition system that will be used in the new screw-pinch experiment SPICA II are described. The system is based on a PDP 11/10 computer, interfaced to the experiment via CAMAC equipment and linked to a remote PDP 11/70. This provides long-term archiving facilities and allows several data analysis programs to be run simultaneously. (author)

  7. New software of the control and data acquisition system for the Nuclotron internal target station

    OpenAIRE

    Isupov, A. Yu.

    2012-01-01

    The control and data acquisition system for the internal target station (ITS) of Nuclotron (LHEP, JINR) is implemented. The new software is based on the ngdp framework under the Unix-like operating system FreeBSD to allow easy network distribution of the online data collected from ITS, as well as the internal target remote control. The investigation has been performed at the Veksler and Baldin Laboratory of High Energy Physics, JINR.

  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. PMID:24365935

  9. 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.

  10. 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.

  11. Measured radioactivity data acquisition and evaluation system (REA)

    International Nuclear Information System (INIS)

    In Germany, authorities in the Federal States are obliged to monitor the environment for radioactivity. Various institutions run radioactivity measurements for this purpose. The measured results are made available to the competent authorities in a variety of ways. Computer systems are now used for central collection and evaluation of these data. LfU has developed a concept to support by DP technologies also the procedures between the measurement site and the central authority. This facilitates data acquisition and speeds up data transmission. The REA concept will streamline procedures and improve data quality. (orig.)

  12. Data acquisition in a wireless diabetic and cardiac monitoring system.

    Science.gov (United States)

    Harvey, Paul; Woodward, Bryan; Datta, Sekharjit; Mulvaney, David

    2011-01-01

    A telemedicine system is described for monitoring the vital signs and general health indicators of patients with cardiac and diabetic conditions. Telemetry from wireless sensors and readings from other instruments are combined into a comprehensive patient health dataset. The data can be stored, accessed and displayed using mobile Internet communications with a server. The paper concentrates on the data acquisition process, using an alternative sensor network protocol to Bluetooth and manual data entry into a smartphone application and HTML5 web browser. PMID:22255009

  13. Wind tunnel real-time data acquisition system

    Science.gov (United States)

    Cole, P.

    1979-01-01

    The hardware configuration is described for the data acquisition system (DAS) which consists of an analog front end that can process up to 260 channels of data, a multichannel analog-to-digital subsystem that can process up to 50,000 samples of data per second, and a digital computer with standard and nonstandard devices, including graphics capability. Also described are the software configuration of the DAS and complex hardware/software interfaces providing, for example, automatic amplifier gain and offset adjustment for each data channel. Specific DAS applications are summarized, including the real time processing of dynamic deflection data, unsteady pressure measurements, and flutter and buffet data.

  14. 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.

  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. 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...

  17. 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.

  18. A Study of Wind Tunnel Data Acquisition System Based on LabWindows/CVI 8.5%基于虚拟仪器的扫描阀风洞数据采集系统研究

    Institute of Scientific and Technical Information of China (English)

    李蓓; 李一滨

    2011-01-01

    This paper presents the data acquisition about scanning valve system in wind tunnel test which is based on the virtual instrument environment, such as the LabWindows/CVI. The test system provided a good measure interface for the users by the LabWindows/CVI and completed the information configuration about module parameters of the system, scanning parameters of the system and trigger mode. It also provided a real - time measurement, display, save and print output about the channel measurement which can selected in the stress testing experimental system. This system possessed a friendly man - machine interface and easy maneuverability,it greatly increased the effectiveness and reliability of measurement.%针对增压连续式风洞扫描阀测量系统的实验,设计了一种基于虚拟仪器LabWindows/CVI开发环境下的风洞扫描阀系统实验数据采集系统,阐述了该系统的方案设计,给出了系统的主要软件涉及构成及采集流程图.该系统为用户提供友好的人机交互界面和易操作性,完成对扫描阀测试实验系统模块参数、系统扫描参数、触发模式的信息配置,实现了对压力测试各通道数据的实时测量、显示、保存及打印输出.实验结果证实该系统提高了测量的有效性和可靠性.

  19. 基于LabVIEW液压成形机数据采集系统的设计%Design of data acquisition system for hydraulic pressure molding machine based on LabVIEW

    Institute of Scientific and Technical Information of China (English)

    朱彦; 雷君相; 罗宇舟; 骆协海

    2012-01-01

    A method based on concept of virtual instruments was proposed to construct an intelligent automatic testing platform using Lab VIEW and existing apparatus. The characteristics of opening Virtual instrument Lab VIEW were described. Based on that, data acquisition system controlled by computer was developed. The data of tensile force and tensile displacement were collected using this system. The results show that the method may improve the testing speed and accuracy and has a strong portability. It can measure many kinds of objects. Based on the characteristics of Lab-VIEW, the visual design of this operating system may show the real-time data concretely and provide detailed data to the experiment.%针对现有测量设备使用中存在的问题,基于虚拟仪器的思想,提出一种利用LabVIEW和现有设备构建智能化自动测试平台的方法.阐述了开放式虚拟仪器平台LabVIEW的特点,在此基础上开发了一个由计算机控制的数据采集系统,并对液压成形机拉伸力、拉伸位移等信号进行了实际采集.实验表明,本方法有利于提高数据采集的速度和准确性,并且具有较强的可移植性,可对多种测量对象进行测量.同时,基于LabVIEW的特点,本操作系统的可视化设计能详细具体的显示所需采集的实时数据,为实验提供详细的数据资料.

  20. 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.

  1. 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.

  2. 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

    2014-01-01

    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. PMID:24859030

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. Computer system design description for the spare pump mini-dacs data acquisition and control system

    International Nuclear Information System (INIS)

    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)

  9. 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).

  10. 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.

  11. 基于USB2.O的线阵CCD数据采集系统驱动电路设计%Design of Driver Circuit for Linear CCD Data Acquisition System Based on USB2.0

    Institute of Scientific and Technical Information of China (English)

    张德军; 张俊俊; 刘自红

    2011-01-01

    The driver circuit for linear CCD data acquisition system was designed based on USB2.0. The system's overall design concept and the realization of drive circuit were focused on. Complex programmable logic device (CPLD) was used as core, and rich interface signals were provided for users with the help of programmable technology. The experimental result indicates that the driver circuit meets the design requirements and has certain practicability.%设计基于USB2.0的线阵CCD数据采集系统的驱动电路,重点介绍系统的整体设计思路和驱动电路的实现。以复杂可编程逻辑器件(CPLD)为核心,充分发挥其“可编程”的技术特性。实验结果表明:该电路符合设计要求,具有很强的实用性。

  12. 基于LabVIEW的数据采集及分析系统的开发%Development of data acquisition and analysis system based on LabVIEW

    Institute of Scientific and Technical Information of China (English)

    罗孟

    2013-01-01

    The virtual instrument technology can be used to realize the sharing of software and hardware resources. Thus, it facilitates the setting up of different automatic test systems. At the same time, an advantage can be taken of various functions of computer, including image display, signal analysis, processing and storage of data, and other operations. In this article, the virtual instrument technology based on the LabVIEW is used for the research and analysis of the development of data acquisition and analysis system.%采用虚拟仪器技术可实现软硬件资源的共享,便于不同自动测试系统的组建,同时还可更加有效地应用计算机所具备的各种功能,实施图像化显示、信号分析、处理和存储数据等各种作业。文章基于LabVIEW的虚拟仪器技术对数据采集及分析系统的开发进行研究和分析。

  13. Application Research of Data Acquisition in Wind Tunnel System Based on LabWindows/CVI%基于LabWindows/CVI风洞数据采集系统的应用研究

    Institute of Scientific and Technical Information of China (English)

    李一滨; 李蓓

    2011-01-01

    介绍了基于LabWindows/CVI虚拟仪器开发环境下动态风洞实验数据的采集.测试系统由主控(上位机)和从控(下位机)两部分构成,上位机用LabWindows/CVI开发,为用户提供良好的测试界面,下位机实现对动态系统压力测试的实时测量.该系统具有友好的人机交互界面和易操作性,大大提高了测量的有效性和可靠性.%The data acquisition about dynanuc wind tunnel test which based on the yutual instrument in LabWindows/CVI is presented.The test system consists of the client( host computer) and the servers ( hypogyny computer) . The client( host computer) provides a good test interface for the users with the LabWindows/CVI.The servers ( hypogyny computer) provides a real-time measurement about Lhe stress tests. This system possesses a friendly man-machine interface and easy operating, the effectiveness and reliability of measurement are increased greatly.

  14. 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...

  15. 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...

  16. 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.

  17. 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。

  18. The Wireless Data Acquisition System for the Vibration Table

    Science.gov (United States)

    Teng, Y. T.; Hu, X.

    2014-12-01

    The vibration table is a large-scaled tool used for inspecting the performance of seismometers. The output from a seismometer on the table can be directly monitored when the vibration table moves in certain pattern. Compared with other inspection methods, inspecting seismometers' performance indicators (frequency response, degree of linearity, sensitivity, lateral inhibition and dynamic range etc). using vibration tables is more intuitive. Therefore, the vibration tables are an essential testing part in developing new seismometers and seismometer quality control. Whereas, in practice, a cable is needed to connect the seismometer to the ground equipments for its signal outputs and power supply, that means adding a time-varying nonlinear spring between the vibration table and ground. The cable adds nonlinear feature to the table, distorts the table-board movement and bring extra errors to the inspecting work and affected the testing accuracy and precision. In face of this problem, we developed a wireless acquiring system for the vibration table. The system is consisted of a three-channel analog-to-digital conversion, an acquisition control part, local data storage, network interface, wireless router and power management, etc. The analog-to-digital conversion part uses a 24-digit high-precision converter, which has a programmable amplifier at the front end of its artificial circuit, with the function of matching outputs with different amplifier from the vibration table. The acquisition control part uses a 32 bit ARM processor, with low-power dissipation, minute extension and high performance. The application software platform is written in Linux to make the system convenient for multitasking work. Large volume local digital storage is achieved by a 32G SD card, which is used for saving real time acquired data. Data transmission is achieved by network interface and wireless router, which can simplify the application software by the supported TCP/IP protocol. Besides

  19. 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...

  20. 基于PIC18F1320微控制器的信号采集系统%A signal acquisition system based on PIC18F1320 microcontroller

    Institute of Scientific and Technical Information of China (English)

    陈鹏

    2011-01-01

    便携式信号采集在机器健康诊断系统中有较高的应用价值.机器健康诊断的信号特点是包括低频信号.本文研究是为了实现简易而且低成本的低频便携式信号采集.以Microchip公司单片机PIC18FI320为核心设计信号采集电路,实现了信号的采集和保存.系统采用串行电可擦除芯片24LC32A保存数据,经过有线通信,信号数据由串行口通过MAX232芯片输送到微型计算机接收和保存,最后绘制出信号波形.微型计算机程序采用Visual Basic编程.研究成功采样频率为3 kHz的复杂信号,证明该方案符合设计要求.%Portable signal acquisition is useful in machine health monitoring systems. The signal characteristics of machine health monitoring includes low frequency signals. The goal of this study is to realize simple, inexpensive and portable low frequency signal sampling. This paper provides the project of signal acquisition system design based on PIC18F1320 microcontroller manufactured by the Microchip Technology Incorporation to achieve signal sampling and storage. The system adopted EEPROM 24LC32A to store the signal data. The microcomputer received data via wired link with the MAX232 IC through the serial port. The microcomputer program, programmed in Visual Basic, received the data, stored it and plotted the signal. The study successfully samples 3kHz complicated signals and thus meets the design requirement.

  1. 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.

  2. 基于S3C2440的图像采集与显示系统%Image Acquisition and Display System Based on S3C2440

    Institute of Scientific and Technical Information of China (English)

    郑凯华; 章旭东; 俞立; 鲍荣; 蒋国华

    2011-01-01

    设计一种基于S3C2440硬件平台和嵌入式Linux操作系统的图像采集与显示系统.该系统通过USB摄像头采集图像数据,利用Video4Linux模块提供的编程接口,实现图像的采集设计,基于Qt/Embedded实现LCD实时显示,并经JPEG压缩算法对图像进行压缩编码用于图像处理或网络传输.整个系统建立在嵌入式架构上,能独立完成实时图像采集、显示及压缩功能,可广泛应用于智能交通、计算机视觉等领域.%An image acquisition and display system based on S3C2440 and embedded Linux is designed. The image data is captured through USB camera, while the programming interfaces provided by the Video4Linux module are used to implement the image collection. Based on Qt/Embedded, the collected image is real-time displayed on LCD. Further, the images are compressed according to JPEG compression algorithm for subsequent process or transmission. The proposed system which is based on the embedded framework performs image data collection, real-time display and image compression. It can be widely used in the fields of intelligent transportation, computer vision and so on.

  3. 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.)

  4. CAMAC acquisition system for industrial X-ray tomograph

    International Nuclear Information System (INIS)

    A 400 kV X-ray industrial scanner has been developed. The present paper describes the CAMAC acquisition system. This unit with its 3 microprocessors, 2 mass memories and TV graphic display is very flexible; it will be used to optimise measurement parameters along with pieces to be checked and to establish application limits of this non destructive inspection method. This system allows internal inspection of objects as big as 400 mm in diameter with an elementary volume of 1 x 1 x 5 mm3 and specific weight in the range of 0.7 to 10 g/cm3. Relative precision of 10-3 in density for moulded objects is expected. The first results obtained are shown

  5. Development of Data Acquisition System for Consolidated Undrained Triaxial Test

    Science.gov (United States)

    Lee, L. M.; Yasuo, T.; Wei, L. C.; Yuan, L. C.

    2016-07-01

    Consolidated Undrained (CU) triaxial test is a common laboratory test used in practice for determining effective and total shear strength parameters of soil. This paper reported works carried out to develop a data acquisition system for a self-assembled triaxial machine. The developed system was capable of acquiring signals from the installed sensors (i.e. pressure transducer, load cell, LVDT), interpreting and presenting the data in real-time graphs. In addition, the study highlighted the advantages of performing double vacuuming method to saturate the soil specimen. The saturation can be obtained quicker and at a significantly lower cell pressure compared to the conventional stepwise increment of back pressure and cell pressure method.

  6. System of acquisition and processing of images of dynamic speckle

    International Nuclear Information System (INIS)

    In this paper we show the design and implementation of a system to capture and analysis of dynamic speckle. The device consists of a USB camera, an isolated system lights for imaging, a laser pointer 633 nm 10 mw as coherent light source, a diffuser and a laptop for processing video. The equipment enables the acquisition and storage of video, also calculated of different descriptors of statistical analysis (vector global accumulation of activity, activity matrix accumulation, cross-correlation vector, autocorrelation coefficient, matrix Fujji etc.). The equipment is designed so that it can be taken directly to the site where the sample for biological study and is currently being used in research projects within the group

  7. System of acquisition and processing of images of dynamic speckle

    Science.gov (United States)

    Vega, F.; >C Torres,

    2015-01-01

    In this paper we show the design and implementation of a system to capture and analysis of dynamic speckle. The device consists of a USB camera, an isolated system lights for imaging, a laser pointer 633 nm 10 mw as coherent light source, a diffuser and a laptop for processing video. The equipment enables the acquisition and storage of video, also calculated of different descriptors of statistical analysis (vector global accumulation of activity, activity matrix accumulation, cross-correlation vector, autocorrelation coefficient, matrix Fujji etc.). The equipment is designed so that it can be taken directly to the site where the sample for biological study and is currently being used in research projects within the group.

  8. 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...

  9. 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.

  10. 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.

  11. 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.

  12. 基于虚拟仪器技术的高速多通道信号采集系统设计%Design of high-speed multi-channel data acquisition system based on virtual instrument technology

    Institute of Scientific and Technical Information of China (English)

    李忠奎

    2012-01-01

    With the advantage of efficient development and low input cost, the virtual instrument technology is used in the field of dynamic test and controlling more and more abroad. In this article, designed high speed and multi-channel data acquisition system which is used for testing of explosive stress wave is based on virtual instrument technology. It can test 64- channel data in the same time. The sample rate of every channel is 1MSPS. By field experiment, we have got effective data.%虚拟仪器技术以其开发高效、投入成本低等优点,在动态测试及控制领域应用越来越广泛。文中基于虚拟仪器技术设计的的高速多通道信号采集系统,用于爆炸应力波测试,能够同时测试64通道的测点数据,每通道采样速率为1MSPS。进行现场实验.取得了有效数据。

  13. Design and Implementation of Multi-channel Data Acquisition System Based on CPLD and AD7865%基于CPLD和AD7865的多通道数据采集系统的设计与实现

    Institute of Scientific and Technical Information of China (English)

    刘静; 姜恒; 石晓原; 郑善军

    2012-01-01

    介绍了一种基于PC104总线的多通道高速同步数据采集系统的设计方法,在硬件设计上采用四通道模数转换芯片AD7865组成模数转换模块,利用CPLD组成功能电路模块进行逻辑控制与数据传输的实现,简化了硬件电路,同时也提高了其设计的灵活性,具有采集数据速率快,准确率高的优点.%A multi-channel and high-speed synchronous data acquisition system based on PC104 bus is introduced. The analog and data signal conversion module performed by 4 passageway conversion chip AD7865 ,the data transmission and the control logics performed by CPLD in hardware simplify the cirOcuit greatly. It has the advantage of flexible design, high accuracy and high speed.

  14. Design of Iris Acquisition and Recognition System Based on TMS320DM6437%基于 TMS320DM6437的虹膜采集和识别系统设计

    Institute of Scientific and Technical Information of China (English)

    袁晓飞; 李临生

    2014-01-01

    The iris recognition technology is considered to be one of most promising biometric authentication technologies,and it has been widely used in finance,electronic commerce,defense and other areas.A real-time iris acquisition and recognition platform is designed based on TI TMS320DM6437.The system framework,and the relevant software design such as the Codec Engine software framework and network transmission are analyzed.The platform can be applied to the different image recognition fields.%虹膜识别技术被认为是最有前途的生物认证技术之一,并且已经广泛应用于金融、电子商务、国防等领域。本课题基于 TI 公司的 TMS320DM6437设计了一款实时的虹膜采集和识别平台,介绍了系统的框架,并分析了相关的软件设计,如 Codec Engine 软件框架和网络传输。该平台也可以应用于不同的图像识别领域。

  15. Development of the bunch-by-bunch beam current acquisition system at SSRF

    Institute of Scientific and Technical Information of China (English)

    HUANG Siting; LENG Yongbin; YAN Yingbing

    2009-01-01

    In this paper, we report the development of a bunch-by-bunch beam current acquisition system. Through a waveform-reconstruction algorithm, the system realizes high equivalent sampling rate with a relatively low inherent rate. Based on the EPICS environment, information communication with other systems can be achieved. Preliminary test results in commissioning the SSRF storage ring show that the system can reconstruct the beam waveform of single bunch, providing a convenient and reliable method for the top-up operation in the future.

  16. 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.

  17. 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.

  18. Infrasound acquisition system for debris flow monitoring based on ST M 32%基于STM32微处理器的泥石流次声采集系统

    Institute of Scientific and Technical Information of China (English)

    冷小鹏; 刘敦龙; 韦方强

    2015-01-01

    对泥石流次声波的监测分析有助于泥石流灾害的预警。泥石流次声采集系统基于STM32高性能32位微处理器设计,结合次声传感器、GPS授时、本地文件存储与远程实时传输等功能,与接入互联网的PC上位机进行数据传输与通信,实现次声信号的远程采集。在泥石流观测研究站的测试应用结果表明,该系统运行稳定,达到预期设计目的。%The monitor and analysis of debris flow infrasound is very helpful for early warning of debris flow .An infrasound sig‐nal acquisition system for debris flow monitoring was designed based on the efficient microprocessor of STM 32 with functiona‐lities of infrasound sensor ,GPS timing ,local data storage and remote real‐time transmission .This system had functions of com‐munication and data transmission with online PC ,which realized the remote collection and transmission of infrasound signal .Ac‐cording to the results of the tests in debris flow observation and research station ,the system runs with stability and meets the de‐sign objective .

  19. Design of Ultrasonic Data Acquisition System%超声数据采集系统设计

    Institute of Scientific and Technical Information of China (English)

    杨勃; 欧阳竟成

    2013-01-01

    本文涉及水下微地形超声探测仪的研发,主要探讨超声探测仪核心系统—超声数据采集系统的设计.首先确定该数据采集系统的基本结构,然后依据探测精度要求对数据采集卡进行选型,最后完成基于PCI-1714高速数据采集卡的超声数据采集软件系统设计,成功开发超声数据采集系统.%Design of ultrasonic data acquisition system, which is the key sub-system of underwater micro-terrain ultrasonic exploring instrument, is discussed in this paper. Firstly, the base structure of ultrasonic data acquisition system is determined. And then, the data acquisition card is selected according to requirement of detecting precision. Finally, design of ultrasonic data acquisition soft system based on PCI-1714 data acquisition card is finished. The whole ultrasonic data acquisition system is developed successfully.

  20. S3DACS - SPACE SIMULATOR SYSTEM DATA ACQUISITION AND CONTROL

    Science.gov (United States)

    De, Freitas Bart F.

    1994-01-01

    The S3 Data Acquisition and Control System, S3DACS, was developed for the Environmental Test Laboratory and Space Simulator at NASA's Jet Propulsion Laboratory. The program is used for monitoring, controlling, and recording information acquired during tests and presenting this information in various formats for easy access by a large number of users. All testing is initiated by a setup procedure that defines what will be tested, limits to be checked, formulas to use, etc. Test results (e.g. temperature, resistance) are then automatically stored in a database for real time display and for future reference. Measurements obtained may be used in various computations defined for the test and selectively presented in tabular, graphical, or electronic representation. Reports may show current or historical events. The S3DACS network software is written in FoxPro/LAN 1.02 and 80386 Assembler for IBM PC and compatibles running MS-DOS 3.31 or higher. Machine requirements include: an 80386 33MHz machine with 10Mb RAM set up as a file server; an 80386 33MHz machine with 4Mb RAM connected to a FLUKE 2240B or 2280 data acquisition device; and an 80386 20MHz machine with 5Mb RAM used as a workstation. Also needed is a National Instruments General Purpose Interface Bus-compatible (GP-IB) Board to enable S3DACS to communicate with IEEE-488 control instruments. Software requirements include: Novell Netware 386 for network management; FoxPro/LAN 1.02 for database management; QEMM 386 version 5.0 for memory management; and DGE version 4, Saywhat, Viewlib, and DBSHOW for graphics and screen displays. The previous list of hardware is the minimum configuration which will allow installation of S3DACS. The addition of workstations and data acquisition devices can occur transparently. S3DACS is distributed on one 5.25 inch 1.2Mb MS-DOS format diskette. The extensive documentation includes a Quick Reference Guide, a Software User's Manual, a Computer Systems Operator's Manual, and a Software