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
投稿时间:2013-01-17  修订日期:2013-09-05  点此下载全文
引用本文:潘卫东,张佳薇,戴景民,张宇峰.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[J].红外与毫米波学报,2013,32(6):486~490].PAN Wei-Dong,ZHANG Jia-Wei,DAI Jing-Min,ZHANG Yu-Feng.Tunable diode laser absorption spectroscopy for simultaneous measurement of ethylene and methane near 1.626μm[J].J.Infrared Millim.Waves,2013,32(6):486~490.]
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作者单位E-mail
潘卫东 哈尔滨工业大学 电气工程及自动化学院 whispe@163.com 
张佳薇 东北林业大学 机电工程学院  
戴景民 哈尔滨工业大学 电气工程及自动化学院  
张宇峰 哈尔滨工业大学 电气工程及自动化学院  
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要: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%.
中文关键词:TDLAS  同步检测  多峰值
 
Tunable diode laser absorption spectroscopy for simultaneous measurement of ethylene and methane near 1.626μm
Abstract:A tunable diode laser absorption spectroscopy system with a multi pass cell and a DFB laser diode at wavelength 1.626 μm 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.
keywords:TDLAS, simultaneous measurement, multi-peak
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