基于Simulink手持式激光甲烷遥测仪标定方法仿真分析与试验研究  

Simulation Analysis and Experimental Research on Calibration Method of Handheld Laser Methane Telemeter Based on Simulink

作　　者：刘东 程跃 周振 李云飞 徐俊 姜静 檀剑飞 Liu Dong;Cheng Yue;Zhou Zhen;Li Yunfei;Xu Jun;Jiang Jing;Tan Jianfei(School of Mechanical and Electrical Engineering,Anhui Jianzhu University,Hefei,Anhui 23060l,China;Hefei Institute of Public Safety Research,Tsinghua University,Hefei,Anhui 230601,China;Anhui Zeone Safety TechnologyCo.,Ltd.,Hefei,Anhui 230601,China;School of Electric and Information Engineering,Anhui Jianzhu University,Hefei,Anhui 23060l,China)

机构地区：[1]安徽建筑大学机械与电气工程学院,安徽合肥230601 [2]清华大学合肥公共安全研究院,安徽合肥230601 [3]安徽泽众安全科技有限公司,安徽合肥230601 [4]安徽建筑大学电子与信息工程学院,安徽合肥230601

出　　处：《应用激光》2022年第12期106-118,共13页Applied Laser

基　　金：安徽省人工智能产业创新发展项目(基于非合作目标激光危化气体遥测系列化智能装备研发及应用)。

摘　　要：围绕目前市场上手持式激光甲烷遥测仪测量误差大、测量精度低的问题,建立了基于可调谐半导体激光吸收光谱技术(TDLAS)的CH4积分浓度遥测仿真系统,并根据仿真结果进行了手持式激光甲烷遥测仪标定试验与相关测量分析。通过CH4积分浓度遥测仿真系统,开展了吸收峰峰值拟合标定法和吸收峰积分面积拟合标定法两种标定方法的仿真试验。通过对同一组积分浓度的两种标定方法试验数据的仿真测量和分析,结果表明积分浓度与吸收峰积分面积的线性相关性为0.999 99,高于积分浓度与吸收峰峰值的线性相关性0.999 88,同时采用吸收峰积分面积标定法的测量误差范围为-0.26%~0.86%,远小于吸收峰峰值拟合标定法的测量误差范围-1.22%~1.16%。根据仿真结果采用吸收峰积分面积拟合标定法对遥测仪进行标定试验和相关测量分析,结果表明该标定方法的平均误差为4.35%,误差范围为-2.89%~7.20%,比市场现有遥测仪的误差范围(±10%)缩小了5.65%。研究结果表明,选用吸收峰积分面积拟合标定法能够显著提高遥测仪的检测精度,缩小测量误差范围。Aiming at the problems of large measurement error and low measurement accuracy of handheld laser methane telemetry instrument in the current market, a telemetry simulation system of CH4integral concentration based on tunable diode laser absorption spectroscopy(TDLAS) is established, and the calibration experiment and related measurement analysis of handheld laser methane telemetry instrument are carried out according to the simulation results. Through the CH4integrated concentration telemetry simulation system, the simulation experiments of two calibration methods, namely, the absorption peak-peak value fitting calibration method and the absorption peak integral area fitting calibration method, were carried out. Through the simulation measurement and analysis of the experimental data of two calibration methods for the same group of integral concentration, the results show that the linear correlation between the integral concentration and the integral area of the absorption peak is 0.999 99, which is higher than the linear correlation between the integral concentration and the peak value of the absorption peak 0.999 88. At the same time, the measurement error range of the absorption peak integral area calibration method is-0.26%~0.86%, which is far less than the measurement error range of the absorption peak peak-value fitting calibration method-1.22%~1.16%. According to the simulation results, the calibration experiment and related measurement analysis of the telemetry instrument are carried out by using the absorption peak integral area fitting calibration method. Results show that the average error of the calibration method is 4.35%, and the error range is-2.89%~7.20%, which is 5.65% smaller than the error range(±10%) of the existing telemetry instrument in the market. Results show that the absorption peak integral area fitting calibration method can significantly improve the detection accuracy of the telemetry instrument and reduce the measurement error range.

关 键 词：甲烷遥测 TDLAS SIMULINK 标定方法 仿真分析 试验分析 

分 类 号：TH744[机械工程—光学工程]