工矿自动化2017，Vol.43Issue(10)：65-69,5.DOI:10.13272/j.issn.1671-251x.2017.10.013
分布式多点激光甲烷检测系统研究
Research of distributed multi-point laser methane detection system
摘要
Abstract
For problems of being easily affected by environment,low detection decision and poor stability in traditional methane detection system,a distributed multi-point laser methane detection system was designed based on tunable diode laser absorption spectroscopy technology and space division multiplexing technology.The system adopts distributed feedback semiconductor laser with wavelength of 1 653.7 nm as light source,uses ratio of the second harmonic and the first harmonic gotten by harmonic detection to invert methane concentration,and employs 1/8 beam splitter and reference air chamber to realize real-time multi-point methane concentration detection.The system has been tested in laboratory.The test results show that the system has high accuracy and good stability,can realize monitoring points within 10 km effectively covered,and measurement error is less than 2％ when methane concentration is 2.00％-85.0％.关键词
激光甲烷检测/分布式多点激光检测/甲烷检测/可调谐半导体激光吸收光谱Key words
laser methane detection/distributed multi-point laser detection/methane detection/tunable diode laser absorption spectroscopy分类
矿业与冶金引用本文复制引用
谭凯,郭清华,张远征,苟怡..分布式多点激光甲烷检测系统研究[J].工矿自动化,2017,43(10):65-69,5.基金项目
国家重点研发计划专项资助项目(2016YFC0801405). （2016YFC0801405）
