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《长春地质学院学报》 1991-02
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THE DATA ACQUISITION AND COMMUNICATION OF THE SWVR-2COO INTELLIGENT ENGINEERING INVESTIGATION INSTRUMENT

Lin Jun(Department of Electronic Instrumentation)Zhang Xiaopei(Department of Hydrogeology and Engineering geology)  
SWVR-2000 Intelligent Engineering Investigation Instrument is a multifunction computer-based investigation system, which is mainly used in the areas of sallow seismic, primary location investigation of the geotechnical engineering, the concrete engineering evaluation, pile base test for engineering architecture and telluric microseism monitoring.The data acquisition is the main part of the instrument. This paper discusses how to improve the sampling speed. If N expresses the numbers of the signal channel, fmax the maximum signal frequence, t the conversion time of A/D converter and T is the sum of all the other time (starting converter, interrupting, fetching, storaging polling and modifying pointers, etc.), according to the sampling theorem and the needs of engineering, the sampling frequence f0 should be:There are some ways to improve sampling speed, one way is to shorten T, another way is to cut downt, still the other way is to increase A/D chips to decrease the numbers of the sampling channels of one A/D converter or to make use of several A/D converters to sample one channel signal in proper order. As T is determined by the hardware and the high speed A/D chip is much higher to the common speed A/D in the market, so that how to use the other ways mentioned above is important and possesses the practical value. This paper discusses the techniques designing the high speed acquisition system by use of common A/D converter(ADC 0804)and gives the details of sampling control tactics of the system. In the last part of the paper, the communicating with IBM PC and its compatible computer is also discussed. The handy way to communicate with other computer is to transmit data with printer interface, which need not to increase any hardware.
【CateGory Index】: TP368.1;;TP311.5
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【References】
Chinese Journal Full-text Database 2 Hits
1 Lin Jun;Ren Ren;Liu Fuchun(Changchun University of Earth Sciences ,Changchun 130026);MULTI-MODULE INTERLEAVING DATA ACQUISITION TECHNIQUE[J];长春地质学院学报;1996-01
2 Lin Jun; Bie HongXia; Qin RuiJie;Study on Testable Design for Data Acquisition System[J];石油仪器;1995-01
China Proceedings of conference Full-text Database 1 Hits
1 Lin Jun Wang Yanzhang Liu Changsheng (College of Instrumentation & Electric Engineering;Key Lab of Geo-Exploration and Instrumentation(Ministry of Education), Jilin University,Changchun 130026,China);The research progress and industrialization status in our country of High-technology geophysical instrumentation[A];[C];2010
【Co-references】
Chinese Journal Full-text Database 4 Hits
1 Lin Jun; Bie HongXia; Qin RuiJie;Study on Testable Design for Data Acquisition System[J];石油仪器;1995-01
2 Wang,Ying一li; Yang,Shi一yuan; Tong,Shi一bai(Automation Department, Tsinghua University, 100084);The Design of a Fault一Tolerant A/D,D/A Converter with High Reliability[J];仪器仪表学报;1994-04
3 Lin Jun(Department of Electronic Instrumentation)Zhang Xiaopei(Department of Hydrogeology and Engineering geology);THE DATA ACQUISITION AND COMMUNICATION OF THE SWVR-2COO INTELLIGENT ENGINEERING INVESTIGATION INSTRUMENT[J];长春地质学院学报;1991-02
4 Lin Maoliu, Gao Xiaoming, Sun Shenghe (Harbin Institute of Technology).;On the Digital Spectra of Nonuniformly Sampled Periodic Signal[J];电子学报;1991-03
【Secondary References】
Chinese Journal Full-text Database 8 Hits
1 ZHENG Jia,REN Yongfeng,LI Huijing,DU Zhi(National Key Laboratory for Electronic Measurement Technology;MOE Key Laboratory of Instrumentation Science & Dynamic Measurement,North University of China,Taiyuan 030051,China);Research and Design of Multiple Data Acquisition Cards Based On FPGA[J];电视技术;2013-01
2 LI Nan,CHEN Yi-Fang,YUAN Ke-Yi(Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China);The Design of 8Bits-400MSPS High-Speed Data Acquisition Card Based on CPLD[J];无损检测;2009-04
3 LIAN Hong-yun1,2,WU Ding-yun3,LI Nan2(1.Mechanical & Electronic Engineering Department,Henan Vocational & Technical College,Zhengzhou 4500462,China;2.Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China;3.Department of Physics & Electronic Engineering,Zhoukou Normal University,Zhoukou 466000,China);Development of High-speed Signal Acquisition System on Industrial Ultrasonic Microscope[J];仪表技术与传感器;2008-09
4 LI Qing,CHEN Yi-fang,CHEN Xuesong(Tsinghua University,Beijing 100084,China);6-Channel High-speed Parallel Data Acquisition Card for Ultrasonic Signal Based on PCI Bus[J];无损检测;2006-09
5 Xue Jian, Tian Gang, Wang Zhejiang, Zeng Zhaofa (Changchun University of Science and Technology, Changchun 130026);3D SEISMIC MODELING EXPERIMENT SYSTEM[J];长春科技大学学报;1998-03
6 Qin Ruijie;Li Wenquan; Lin Jun;A Type of Instantaneous Floating Amplifier with New Pattern[J];航空计测技术;1997-04
7 Lin Jun;Ren Ren;Liu Fuchun(Changchun University of Earth Sciences ,Changchun 130026);MULTI-MODULE INTERLEAVING DATA ACQUISITION TECHNIQUE[J];长春地质学院学报;1996-01
8 Lin Jun ; Zhu Baolong;The Consideration for Data Acquisition System Design[J];石油仪器;1995-04
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