基于单片机的非分散红外多组分气体检测系统

摘要

The principle of the Non-Dispersive Infrared (NDIR) is introduced, a multi-component gas-line detection system is designed based on Atmega128 that is a single - chip computer in this paper.The pnnciple and construction (hardware and software) are discussed. The advanced techniques include Filter related wheels and sample cell, highly sensitive infrared weak signal amplifier technique, low-power single-chip microcomputer, the experimental apparatus was simplified and the system detection sensitivity was improved ,which can realize the measurement for SOz, NO and N02 .%介绍了非分散红外(NDIR)吸收基本原理,设计了一种基于Atmega128单片机多组分污染气体在线监测系统,讨论;了统硬件和软件的实现方法.它采用滤光片相关轮技术和怀特池技术,红外微弱信号高灵敏放大技术,低功耗单片机数据采集等先进技术,简化了实验装1并提高了系统检浏灵敏度,可实现对S02,NO和CO:气体的连续在线测量.