基于NDIR和PID传感器的气体检测系统设计  

Design of a Gas Detection System Based on NDIR and PID Sensors

作　　者：吴焱[1] WU Yan(Department of Mechanical and Automotive Engineering,Anhui Vocational and Technical College of Industry and Trade, Huainan 232001, China)

机构地区：[1]安徽工贸职业技术学院机械与汽车工程系,安徽淮南232001

出　　处：《安徽电气工程职业技术学院学报》2020年第1期111-119,共9页Journal of Anhui Electrical Engineering Professional Technique College

基　　金：安徽省高等学校质量工程项目(项目编号:2018jxtd110);安徽省高等学校质量工程省级示范实验实训中心项目(项目编号:2017sxzx63)。

摘　　要：针对电化学气体检测传感器的不足,基于NDIR和PID传感器设计了气体检测系统。采用AD8605+AD7190设计了带增益的IV转换和同相放大电路采样传感器数据,辅以ADM3202+MCP2200+AD5420+AD5700提供了串口、USB和兼容HART的4~20 mA输出的通信接口。详细介绍了电路的基本原理、关键参数选型和配置流程。下位机软件负责采样数据的计算和传输,基于java和LabVIEW的上位机软件实现了数据的hsqldb存储和显示。以海曼NDIR-CO2传感器和S1226为例进行了测试,结果表明系统运行稳定,丰富了气体检测的设计方法,具有一定的实用价值。In view of the shortcomings of electrochemical gas sensors,a gas detection system based on NDIR and PID sensors is designed.IV conversion and in-phase amplifier circuits with gain are designed by using AD8605+AD7190 for sensor sampling,supplemented by ADM3202+MCP2200+AD5420+AD5700 providing communication interfaces for RS232,USB and hart-compatible 4~20 mA outputs.The basic principle of circuits,key parameters selection and configuration flow are introduced in detail.The lower computer software is responsible for data sampling and transmission,and the upper computer software realizes hsqldb storage and display of data based on java and LabVIEW.HEIMANN NDIR-CO2 sensor and S1226 are taken as examples to undergo the tests.The results show that the system runs stably and enriches the methods of designing gas detection,which is of certain practical value.

关 键 词：气体检测 IV转换 LABVIEW JAVA hsqldb 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]