矿用CH4-CO2红外传感器温度补偿算法模型研究  

Study on temperature compensation algorithm model of mine CH4-CO2 infrared sensor

作　　者：马砺 范新丽[1,2] 张晓龙 张鹏宇 黄霄 王烨 MA Li;FAN Xin-li;ZHANG Xiao-long;ZHANG Peng-yu;HUANG Xiao;WANG Ye(College of Safety Science and Engineering,Xi′an University of Science and Technology,Xi′an 710054,China;Key Laboratory of Western Mine Exploitation and Hazard Prevention,Ministry of Education,Xi′an University of Science and Technology,Xi′an 710054,China)

机构地区：[1]西安科技大学安全科学与工程学院,陕西西安710054 [2]西安科技大学陕西省煤火灾害防控重点实验室,陕西西安710054

出　　处：《激光与红外》2020年第12期1456-1462,共7页Laser & Infrared

基　　金：国家重点研发计划项目(No.2018YFC0808104)资助。

摘　　要：红外气体传感器检测气体浓度具有响应速度快、稳定性高等特点,但检测精度受温度变化影响大。本文对不同温度下矿用CH4-CO2红外传感器待测气体响应信号进行实验研究,并研究传感器的温度补偿算法模型,消除温度对传感器响应信号的影响。研究结果表明:在环境温度20℃时,CH4-CO2红外传感器响应信号与待测气体浓度之间呈现良好的线性关系;温度越高,CH4-CO2红外传感器的响应信号越大。通过建立随机森林模型进行温度补偿,CH4红外传感器和CO2红外传感器的响应信号和待测气体浓度之间的相关系数分别为0.9203和0.9099,响应信号与待测气体浓度之间的线性相关度提高、均方误差和平均绝对误差均减小,CH4红外传感器精度更高。基于随机森林温度补偿模型在10~25℃温度变化范围内可减小温度对矿井气体浓度监测的影响。The infrared gas sensor has the characteristics of fast response speed and high stability,but the detection accuracy is greatly affected by temperature changes.In this paper,experiments are performed on the gas response signal of the CH4-CO2 infrared sensor for mining at different temperatures,and the temperature compensation algorithm model of the sensor is studied to eliminate the influence of temperature on the sensor response signal.The results show:at an ambient temperature of 20℃,a good linear relationship exists between the response signal of the CH4-CO2 infrared sensor and the concentration of the gas to be measured.The higher the temperature is,the larger the response signal of the CH4-CO2 infrared sensor is.The correlation coefficients between the response signals of the CH4 infrared sensor and CO2 infrared sensor and the gas concentration to be measured are 0.9203 and 0.9099,respectively.The linear correlation between the response signal and the concentration of the gas to be measured is increased,and the mean square error and the average absolute error are reduced.The accuracy of CH4 infrared sensor is higher.Based on the random forest temperature compensation model,the influence of temperature on the monitoring of mine gas concentration can be reduced in the temperature range of 10~25℃.

关 键 词：红外气体传感器 温度补偿 随机森林 检测精度 

分 类 号：TN215[电子电信—物理电子学]