一种基于热电效应的微型CO2浓度检测系统

量子电子学报 , 2011, 28(6): 726-729. doi: 10.3969/j.issn.1007-5461.2011.06.014

一种基于热电效应的微型CO2浓度检测系统

陈晓宁 ^1, , 刘建国 ^2, , 阎庆 ^3, , 王强 ^4, , 黄学平 ^5, , 张延长 ^6,

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基金项目: 中国科学院环境光学与技术重点实验室开放基金(2005DP173065-11-01) 安徽大学青年基金(02303305)

关键词：光谱学 , 热电效应 , 微型系统 , CO2检测

Concentration detecting system of CO2 based on thermoelectric effect

基于CO2在4.26 μm处的特征吸收,采用抽取式密闭小型怀特池以及热电传感器,设计了一种微型CO2气体检测系统,并进行了实际测量,反演了CO2浓度,相关性达到0.99973,最低检测CO2浓度为1 ppm.此系统结构简单,运行稳定,避免了光学轮盘调制方式的复杂结构,减小了开放式结构对探测器带来的不稳定影响.

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