基于中红外LED的CO_2气体浓度检测系统研究  

Research on CO_2 gas concentration test system based on mid-infrared LED

作　　者：陈子聪[1] 高致慧[1] 曹志[1] 杨勇[1] 钟德辉[1] 

机构地区：[1]深圳大学电子科学与技术学院,广东深圳518060

出　　处：《激光与红外》2012年第11期1255-1258,共4页Laser & Infrared

基　　金：深圳市科技计划项目(No.SY200806270158A);深圳市微纳光子信息技术重点实验室开放基金项目(No.MN201105)资助

摘　　要：介绍了基于中红外LED的CO2气体浓度检测系统。通过运用差分吸收和相关检测等手段提高系统灵敏度,系统在检测0%～10%CO2浓度条件下,示值误差约为±0.9%。实验结果与理论数据得到良好的吻合,对LED实现气体检测提供了新思路。This paper presents a test system of CO2 gas concentration using mid-infrared LED. Differential absorption method and coherent detecting technology are used to enhance sensitivity. The measurement precision of the system is about 1% SF on condition that the concentration of CO2 is within the range of 0% to 10%. The experimental results conform to the theoretical analysis. This paper provides a new idea for LED-based gas detecting system.

关 键 词：气体浓度检测 红外吸收光谱 中红外LED CO2 

分 类 号：TN219[电子电信—物理电子学]