用于CO激光TDLAS型气体检测系统的光电检测电路研制  

Development of photoelectric detection circuit for CO laser TDLAS gas detection system

作　　者：黄硕 王彪[1] 戴童欣 连厚泉 程林祥 俞泳波 HUANG Shuo;WANG Biao;DAI Tongxin;LIAN Houquan;CHENG Linxiang;YU Yongbo(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;University of Chinese Academy of Sciences,Beijing 100049,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院大学,北京100049 [3]中国科学技术大学,合肥230026

出　　处：《激光杂志》2021年第2期62-65,共4页Laser Journal

基　　金：国家重大科研仪器设备研制项目(No.61727822)。

摘　　要：准确检测CO浓度对环境保护和安全生产具有重要的意义,TDLAS技术是一种高效、高精度的CO气体浓度检测方案。设计了一种用于CO激光TDLAS型气体检测系统的光电检测电路。CO气体选择性吸收由激光器发出的特定波长信号,而后光信号经过光电探测电路转换为有效的电压信号,运用TLC4545模数转换芯片进行数据采集,并将其发送到主控芯片STM32F105R8进行处理,使用W25Q128闪存完成对实验数据的存储,最后数据通过串口调试助手进行显示。经过实验表明,该电路可以实时、稳定、精确地将光信号转换为电信号,且灵活性强,可应用于其它气体检测系统。Accurate detection of CO concentration is of great significance for environmental protection and safety production.TDLAS technology is an efficient and high-precision CO gas concentration detection scheme.In this paper,a photoelectric detection circuit for CO laser TDLAS gas detection system is designed.CO gas selectively absorbs the specific wavelength signal from the laser,and the optical signal is converted into effective voltage signal by photoelectric detection circuit.The data is collected by TCL4545 analog-to-digital conversion chip,and sent to the main control chip STM32 F105 R8 for processing.At the same time,the W25 Q128 flash memory completes the storage of experimental data,and finally the data is displayed through the serial port debugging assistant.Experiments show that the circuit can convert optical signal into electrical signal in real time,stably and accurately,and has strong flexibility,which can be applied to other gas detection systems.

关 键 词：CO TDLAS 光电探测器 TLC4545 

分 类 号：TN271.5[电子电信—物理电子学]