基于STM32H7A3的频分复用型TDLAS激光驱动系统研制  

Development of frequency division multiplexing TDLAS laser drive system based on STM32H7A3

作　　者：王彪[1] 吴剑星 吕婉溧 杨银春 廖辉 吴立彬 张瑞 WANG Biao;WU Jianxing;LYU Wanli;YANG Yinchun;LIAO Hui;WU Libin;ZHANG Rui(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;Jilin University,Changchun 130015,China;University of Chinese Academy of Sciences,Beijing 100049,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]吉林大学,长春130015 [3]中国科学院大学,北京100049

出　　处：《激光杂志》2024年第4期35-39,共5页Laser Journal

基　　金：吉林省科技发展计划重点科技研发项目(No.20220203016SF);中国科学院大学生创新实践训练计划项目(No.2022008090)。

摘　　要：随着气候变化问题日渐凸显,习近平主席作出了碳达峰、碳中和的重要指示,因此对二氧化碳检测的研究具有重要的意义。针对二氧化碳和水汽同时检测的需要,本文设计了一种频分复用型TDLAS激光驱动系统。系统采用STM32H7A3作为主控器,利用其内部高级定时器和多通道DAC产生多路幅值频率可调的电压信号,搭配外部V-I转换电路和光纤合束器研制出频分复用型TDLAS激光驱动系统。系统配备FLASH存储芯片和对应的上位机软件,具有灵活设置系统参数、存储加载控制数据并且在断电时保护数据不丢失的功能。经过测试,该系统输出的电流信号波形稳定,频率误差小,可应用于TDLAS系统进行多个激光器的同时驱动。As the problem of climate change is becoming more and more prominent,President Xi Jinping has made the important instruction of carbon peak and carbon neutral,so the research on carbon dioxide detection is of great significance.For the need of simultaneous detection of carbon dioxide and water vapor,this paper designs a fre-quency division multiplexing TDLAS laser drive system.The system adopts STM32H7A3 as the main controller,and u-ses its internal advanced timer and multi-channel DAC to generate multiple amplitude-frequency-adjustable voltage signals,which are matched with the external V-I conversion circuit and fiber optic combiner to develop the frequency division multiplexing TDLAS laser driving system.The system is equipped with a FLASH memory chip and correspond-ing host computer software,which has the functions of flexibly setting system parameters,storing and loading control data,and protecting the data from being lost in case of power failure.After testing,the output current signal waveform of the system is stable with low frequency error,which can be applied to TDLAS system to drive multiple lasers at the same time.

关 键 词：TDLAS 频分复用 电流驱动 STM32H7A3 

分 类 号：TN271.5[电子电信—物理电子学]