基于STM32和FPGA的激光甲烷检测系统设计  

Design of laser methane detecting system based onSTM32 and FPGA

作　　者：范松涛[1] 周燕[1] 潘教青[2] 张强[3] 曹忆南[1] 

机构地区：[1]中国科学院半导体研究所光电系统实验室,北京100083 [2]中国科学院半导体研究所光电子研究发展中心,北京100083 [3]北京光电技术研究所,北京100010

出　　处：《传感器与微系统》2012年第10期116-118,共3页Transducer and Microsystem Technologies

基　　金：国家"863"计划资助项目(2009AA03Z442)

摘　　要：为了开发小型化的实用激光甲烷检测系统,设计了基于STM32单片机和FPGA的系统方案。FPGA实现系统中正交矢量锁相放大器和激光器调制驱动信号的产生。STM32负责半导体激光器温度控制,气体体积分数计算,通信接口等功能。设计的激光甲烷检测系统对4种标准甲烷气体进行了实际测试,在10%量程范围内示值误差不超过±0.2%。此方案可以作为激光气体检测系统的通用平台,实现对其他气体的测量。The system scheme based on STM32 and FPGA is designed in order to develop the miniaturization practical laser methane detecting system.The generation of the orthogonal vector lock-in amplifier and laser modulation driving signal is implemented on the FPGA chip.STM32 is responsible for the temperature control of semiconductor lasers,calculation of gas volume fraction,communication interface and other functions.Four standard methane samples are tested by the designed laser methane detecting system,indicating error is less than ±0.2% at the full scale of 10%.This scheme can be used as a common platform for the laser gas detecting system to realize measurement of other gases.

关 键 词：气体检测 激光 甲烷 STM32 现场可编程门阵列 

分 类 号：TN216[电子电信—物理电子学]