利用可调谐半导体激光吸收光谱法在1.626 μm处实现乙烯和甲烷的同步检测

研制了基于可调谐激光吸收光谱法的甲烷和乙烯的同步检测系统.该系统主要利用工作在1.626 μm附近的DFB激光器结合长光程吸收池来实现的.通过系统检测以及光谱数据库获取乙烯和甲烷在1.626 μm波长附近的吸收光谱信息,分析谱线的强度、位置以及相互之间的关系,采用最小二乘法建立谱线分析方法.以质量流量计为标准,系统的浓度测量精度可达到5％....

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Published in红外与毫米波学报 Vol. 32; no. 6; pp. 486 - 490
Main Author 潘卫东 张佳薇 戴景民 张宇峰
Format Journal Article
LanguageChinese
Published 哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨,150001%东北林业大学机电工程学院,黑龙江哈尔滨,150040 2013
Subjects
TDLAS
同步检测
多峰值
同步检测
TDLAS
multi-peak
多峰值
simultaneous measurement
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ISSN1001-9014
DOI10.3724/SP.J.1010.2013.00486

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Summary:研制了基于可调谐激光吸收光谱法的甲烷和乙烯的同步检测系统.该系统主要利用工作在1.626 μm附近的DFB激光器结合长光程吸收池来实现的.通过系统检测以及光谱数据库获取乙烯和甲烷在1.626 μm波长附近的吸收光谱信息,分析谱线的强度、位置以及相互之间的关系,采用最小二乘法建立谱线分析方法.以质量流量计为标准,系统的浓度测量精度可达到5％.
Bibliography:A tunable diode laser absorption spectroscopy system with a multi pass cell and a DFB laser diode at wavelength 1. 626 txm has been developed for simultaneous measurement of ethylene and methane. A line separation method based on multi absorption peak using the least squares algorithm has been established. The characteristic peak positions and relative intensities of ethylene and methane were determined by available spectral structures from previous investigations and available databases. The accuracy of the measured concentration is within 5% comparing with the mass flow meter.
TDLAS, simultaneous measurement, multi-peak
31-1577/TN
PAN Wei-Dong, ZHANG Jia-Wei, DAI Jing-Min , ZHANG Yu-Feng （ 1. School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China; 2. College of Electromechanical Engineering, Northeast Forestry University, Harbin 150040, China）
ISSN:1001-9014
DOI:10.3724/SP.J.1010.2013.00486