基于NDIR方法的机动车排放气体传感器

作者：姜炎材，陈红岩* 日期：2010-11-22/span> 浏览：3665 查看PDF文档

基于NDIR方法的机动车排放气体传感器

姜炎材，陈红岩*

(中国计量学院 机电工程学院，浙江 杭州 310018)

摘要：针对机动车尾气成分检测中存在的各种问题，根据不分光红外（NDIR）方法的基本原理设计了新的测量方案。传感器同时测得了CO、CO2、HC化合物3种气体的浓度，并以数字信号方式通过串行口输出测量结果，避免了传输过程中的干扰，可以很方便地应用到具有串口的各种数字处理设备中。用标准气体对传感器进行了实验标定，其结果表明传感器测量精度达到国家标准要求。
关键词：不分光红外；气体传感器；机动车尾气检测
中图分类号：TH86；TN215
文献标识码：A文章编号：1001-4551(2010)10-0077-04

Vehicle gas emissions sensor based on NDIR method
JIANG Yancai, CHEN Hongyan
(School of Mechatronics Egineering, China Jiliang University, Hangzhou 310018, China)

Abstract: Aiming at many problems in vehicle emissions detection, a new detecting system was designed according to the nondispersive infrared(NDIR) method. The concentration of CO, CO2, HC was detected by the sensor at the same time. The results were transformed to the digital signals and exported through the serial port in order to avoid the interference during the transmission, and it can be used to the digital processors conveniently. The precision experiments was done with standard gas samples. The results indicate that the sensor precision fits to the country standards.
Key words: nondispersive infrared(NDIR); gas sensor; vehicle emissions detection