摘要
为解决涉氢装备泄漏氢气光谱信号分析中吸收线型选择的问题,研究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线型函数谱线的重构精度研究,对比分析了仿真结果与HITRAN数据库氢气吸收谱线在不同线型函数重构条件下的吸收系数,研究了温度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:Guass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2.63%,验证了该仿真模型的精确性和可靠性;随着温度升高,三种线型的吸收系数呈线性下降,峰值吸收系数分别下降了8.2%、16.8%和13.5%,半宽变化幅度分别为4.5%、6.2%和5.2%,氢气激光吸收光谱吸收系数在Lorentz线型下的峰值和半宽温度敏感度均最低;同等温度条件下,Lorentz线型峰值吸收系数最小为Guass和Voigt线型的6.3倍和7.1倍,吸收效果最好。为后续深入研究氢气激光吸收光谱检测线型选择提供了依据,为实际应用提供理论指导。
In order to solve the problem of absorption line type selection in hydrogen leakage spectrum signal analysis of hydrogen-related equipment,a simulation model of hydrogen laser absorption spectrum direct absorption concentration inversion process is established.This research combined the HITRAN database to investigate the reconstruction accuracy of three types of line shape functions.The absorption coefficients obtained from the simulation results with those from the HITRAN database under different conditions of line shape function reconstruction are compared and analyzed.The influence of temperature variations on the absorption coefficients of hydrogen absorption lines under the three linear functions is examined.The results show that among the three linear functions,the Guass linear function has the highest reconstruction accuracy of hydrogen absorption spectral lines,and its reconstruction error is≤0.02%,and the maximum reconstruction error of the Voigt line type function and the Lorentz line type function is 0.37%and 2.63%,respectively,which verifies the accuracy and reliability of the simulation model.As the temperature increases,the absorption coefficients of the three line types exhibit a linear decrease.The peak absorption coefficients decrease by 8.2%,16.8%,and 13.5%respectively,while the changes in the half-width are 4.5%,6.2%,and 5.2%respectively.The Lorentz line type exhibits the lowest temperature sensitivity for both the peak absorption and FWHM in hydrogen gas laser absorption spectra.Under the same temperature conditions,the peak absorption coefficient of Lorentz linear type is 6.3 times and 7.1 times that of Guass and Voigt linear type,and the absorption effect is the best.This study provides a basis for subsequent in-depth research on the selection of linear type detection by hydrogen laser absorption spectroscopy.Additionally,it offers theoretical guidance for practical applications.
作者
周围
赵丽娟
王迪
吕妍
李玉爽
濮御
ZHOU Wei;ZHAO Li-juan;WANG Di;LU Yan;LI Yu-shuang;PU Yu(School of Physics and Electronic Engineering,Northeast Petroleum University,Daqing 163318,China;International Joint Laboratory on Low-Carbon and New-Energy Nexus,Northeast Petroleum University,Daqing 163318,China;National Key Laboratory of Multi-resource Collaboration for Green Extraction of Onshore Shale Oil,Daqing 163318,China)
出处
《光学与光电技术》
2024年第3期70-77,共8页
Optics & Optoelectronic Technology
基金
黑龙江省“揭榜挂帅”科技攻关项目(2023ZXJ06A04)
黑龙江省“双一流”学科协同创新成果项目(LJGXCG2023-108)
国家市场监督管理总局科技计划项目(S2023MK0658)
杭州杭燃工程科技有限公司科技计划项目(z20220203)资助。
