热催化瓦斯传感器的特性及其补偿方法  

Thermo catalysis gas sensor characteristics and its compensation

作　　者：于震[1] 张正勇[2] 

机构地区：[1]渤海大学,辽宁锦州121000 [2]中国科学院合肥智能机械研究所,安徽合肥230031

出　　处：《传感器与微系统》2010年第1期42-44,48,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金重点资助项目(50534050);国家"863"计划资助项目(2007AA04Z332)

摘　　要：针对热催化瓦斯传感器特性漂移严重的问题,在对热催化瓦斯传感器灵敏度、零点时漂以及环境温度、湿度对其影响实测数据的基础上,通过最小二乘法建立了传感器特性漂移的数学模型,并提出了对其特性进行补偿的方法。实验结果表明:补偿后的瓦斯检测精度大大提高。对热催化瓦斯传感器特性漂移的机理进行了分析。Aimed at the serious drift problem of thermo catalysis gas sensor properties, mathematical model of sensor characteristics drift is built by least squares method on the basis of measured data of sensitivity, zero drift with time of gas catalysis sensor, and the effect of ambient temperature ＆ humidity. The method of temperature compensation is proposed. The experimental results show that the gas detection accuracy has been greatly improved after compensation. The mechanism of thermo catalysis gas sensor characteristics drift is analyzed.

关 键 词：催化传感器 瓦斯检测 数学建模 特性补偿 特性漂移机理 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]