压强变化对氢气激光检测吸收谱线影响分析  

Analysis of the Influence of Pressure Changes on the Absorption Spectra of Hydrogen Laser Detection

作　　者：吕妍[1] 龙倩倩 王迪[1,2,3] 李玉爽 濮御 LYU Yan;LONG Qianqian;WANG Di;LI Yushuang;PU Yu(School of Physics and Electronic Engineering,Northeast Petroleum University,Daqing Heilongji-ang 163318,CHN;Heilongjiang Provincial Key Laboratory of Thermal Utilization and Disater Reduction of New Energy in Cold Ragion,Daqing Heihongjiang 163318,CHN;National Key Laboratory of Multi-resource Collaboration for Green Extraction of Onshore Shale Oil,Daqing Hei-longjiang 163318,CHN)

机构地区：[1]东北石油大学物理与电子工程学院,黑龙江大庆163318 [2]黑龙江省寒区新能源热利用及防灾减灾重点实验室,黑龙江大庆163318 [3]多资源协同陆相页岩油绿色开采全国重点实验室,黑龙江大庆163318

出　　处：《光电子技术》2024年第1期65-71,共7页Optoelectronic Technology

基　　金：黑龙江省“揭榜挂帅”科研攻关项目(NO.2023ZXJ06A04);黑龙江省“双一流”学科协同创新成果项目(NO.LJGXCG2023-108)。

摘　　要：为解决涉氢装备泄漏氢气激光检测光谱信号分析中线型选择的问题,建立了氢气激光吸收光谱直接吸收浓度反演过程仿真模型,结合Hitran数据库开展了对三种不同线型函数谱线的重构精度研究,研究了压强变化对三种线型函数下氢气吸收谱线吸收系数的影响。结果表明:Gauss线型函数的氢气吸收谱线重构精度在三种线型函数中最高,其重构误差≤0.02%,Voigt线型函数和Lorentz线型函数的最大重构误差分别为0.37%和2.58%,验证了该仿真算法的精确性和可靠性;三种线型仿真得到峰值吸收系数均随压强增加而增大,在1.01325×10^(4)~5.06625×10^(5)Pa范围内,Lorentz线型的峰值吸收系数最大,该线型下仿真得到的吸收系数峰值最小为Gauss线型的1.38倍、最大为Gauss线型的17.77倍;其值最小为Voigt线型的2.07倍,最大为Voigt线型的18.41倍。本研究为后续深入研究氢气激光吸收光谱检测提供了科学依据,为实际应用提供理论指导和一定参考。In order to solve the problem of line selection in the analysis of hydrogen laser leakage detection spectral signal,a simulation model of direct absorption concentration inversion process of hy‐drogen laser absorption spectrum was established,and the reconstruction accuracy of spectral lines of three different linear functions was studied by combining Hitran database,and the influence of pressure change on the absorption coefficients of hydrogen absorption spectra under three linear functions was studied.The results showed that the reconstruction accuracy of the Gauss linear function was the highest among the three linear functions,and its reconstruction error was less than 0.02%.The maximum reconstruction error of Voigt linear function and Lorentz linear function were 0.37%and 2.58%,respectively,which could verify the accuracy and reliability of the simulation algorithm.The simulation results showed that the peak absorption coefficients of the three types of lines increase with the increased of pressure.In the range of 0.1~5.0 atm,the peak absorption coefficient of Lorentz linear was the largest,and the simulated peak absorption coefficient of Lorentz linear was the minimum 1.38 times and the maximum 17.77 times of Gauss linear.The minimum value was 2.07 times that of Voigt and the maximum value was 18.41 times that of Voigt.This study has laid a scientific basis for further research on hydrogen laser absorption spectrum detection,thus providing theoretical guidance and reference for practical application.

关 键 词：直接吸收 线型函数 重构精度 吸收系数 

分 类 号：TN247[电子电信—物理电子学] O433.1[机械工程—光学工程]