非色散红外CO2传感器温度补偿模型研究  

Research on Temperature Compensation Model of Non-dispersive Infrared CO2 Sensor

作　　者：牛萍娟[1,2] 程峥 田海涛[1] 李舒舒 NIU Ping-juan;CHENG Zheng;TIAN Hai-tao;LI Shu-shu(School of Electrical Engineering and Automation,Tianjin Polytechnic University,Tianjin 300387,China;Engineering of Research Center of High Power Solid State Lighting Application System of Ministry of Education,Tianjin Polytechnic University,Tianjin 300387,China;School of Electronics and Information Engineering,Tianjin Polytechnic University,Tianjin 300387,China)

机构地区：[1]天津工业大学电气工程与自动化学院,天津300387 [2]天津工业大学大功率半导体照明应用系统教育部工程中心,天津300387 [3]天津工业大学电子与信息工程学院,天津300387

出　　处：《仪表技术与传感器》2019年第8期17-20,共4页Instrument Technique and Sensor

基　　金：国家火炬计划项目(2015GH611592);中小企业发展专项资金中欧国际合作项目(SQ2013ZOA100010);天津市高等学校创新团队培养计划(TD13-5035)

摘　　要：针对农业温室大棚中CO2浓度监测易受到温度影响的问题,建立了一种利用热释电探测器对非色散红外CO2传感器进行温度补偿的模型。从安装在红外探测器上的热敏电阻的输出电压中提取环境温度。为了建立温度补偿模型,进行了温度对传感器模块性能影响的实验,并采用卡尔曼滤波对足够的稳态数据进行处理。在建立温度补偿模型之后,其在30℃温度变化范围内的精度在±150 ppm以内,能够实现较准确的CO2浓度在线监测。According to the problem that the monitoring of CO 2 concentration in agricultural greenhouse was easily affected by temperature,a model of temperature compensation for non-dispersive infrared CO 2 sensor using pyroelectric detector was established.The temperature was extracted from the output voltage of the thermistor mounted on the infrared detector.In order to establish a temperature compensation model,the effect of temperature on the performance of sensor module was tested,and Kalman filter was used to deal with the enough steady state data.After establishing the temperature compensation model,the accuracy of the sensor module within the range of 30 ℃ temperature is within the ±150 ppm,which can achieve accurate online monitoring of CO 2 concentration.

关 键 词：温室 非色散红外 CO2传感器 热释电探测器 温度补偿 卡尔曼滤波 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]