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Multi-channel high-precision data acquisition devi ce for aerospace

         

摘要

This paper describes the detailed desi gn of data acquisition device with multi-channel and high-precision for aerosp ace.Based on detailed analysis of the advantages and disadvantages of tw o common acquisition circuits,the design factors of acquisition device focus o n accuracy,sampling rate,hardware overhead and design space.The me chanical structure of the system is divided into different card layers according to different functions and the structure has the characteristics of high reliability,conveni ence to install and scalability.To ens ure reliable operation mode,the interface uses the optocoupler isolated from th e e xternal circuit.The transmission of signal is decided by the current in the cur rent loop that consists of optocouplers between acquisition device and t est bench.In multi-channel switching circuit,by establ ishing analog multiplexer model,the selection principles of circuit modes are given.

著录项

  • 来源
    《测试科学与仪器:英文版》 |2013年第2期|184-189|共6页
  • 作者单位

    Science and Technology on Electronic Test & Mea surement Laboratory;

    University of China;

    Key Laboratory of Instrumentation Science & Dynamic Measurement(North Univer sity of China);

    Ministry of Education;

    College of Electronics and Information Engineering;

    Taiyuan University of Sci ence and Technology;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 TP274.2;
  • 关键词

    数据处理; 数据收集; FPGA; DSP;

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