The intensity calculation of the gas absorption line by multi-line Voigt fitting  

作　　者：周孟然 李振璧 钟鸣宇 何刚 

机构地区：[1]School of Electrical & Information Engineering,Anhui University of Science and Technology,Anhui 232001,China

出　　处：《Journal of Coal Science & Engineering(China)》2008年第4期534-537,共4页煤炭学报（英文版）

基　　金：the National Natural Science Foundation of China(50574005);Natural Science Foundation of Education Department of Anhui,China(2005KJ081)

摘　　要：Adopted the distribution feedback type （DFB） laser to measure the coal mine gas methane, according to the methane located 1.6 μm nearby 2v3 with a R9 direct absorption spectrum, attraction wire intensity of each line was calculated through the multi-line Voigt fitting. The experimental result indicates that in the obtained four attraction recover of wire, the maximum deviation is 2.7%, and the minimum deviation is 0.02%, other results are all in experimental error scope. This research method may apply in the spectrum survey methane gas density, it has characteristics including high precision, strong selectivity, fast response and so on.Adopted the distribution feedback type (DFB) laser to measure the coal mine gas methane,according to the methane located 1.6 tJm nearby 2v3 with a R9 direct ab- sorption spectrum,attraction wire intensity of each line was calculated through the multi-line Voigt fitting.The experimental result indicates that in the obtained four attraction recover of wire,the maximum deviation is 2.7%,and the minimum deviation is 0.02%, other results are all in experimental error scope.This research method may apply in the spectrum survey methane gas density,it has characteristics including high precision, strong selectivity,fast response and so on.

关 键 词：coal mine gas absorption line intensity multi-line Voigt fitting spectrum survey 

分 类 号：TP274.4[自动化与计算机技术—检测技术与自动化装置]