影响实用化实时测温系统测温精度的几个因素  

SEVERAL FACTORS OF INFLUENCING MEASUREMENT ACCURACY FOR A PRACTICAL REAL-TIME TEMPERATURE MEASUREMENT SYSTEM

作　　者：施德恒[1] 刘玉芳[1] 孙金锋[1] 朱遵略[1] 

机构地区：[1]河南师范大学物理系

出　　处：《红外与毫米波学报》2004年第5期396-400,共5页Journal of Infrared and Millimeter Waves

基　　金：河南省科技攻关计划 ( 0 0 112 0 3 2 1)

摘　　要：基于Kirchhoff定律 ,利用半导体激光器及钽酸锂热释电探测器设计了一种实用化的实时测温系统 .从待测目标表面的红外辐射特性、待测表面周围的其它辐射体、大气的透射特性以及测温系统本身这四个方面出发 ,对影响该系统测温精度的因素进行了详尽分析 ,并提出了提高测温精度的相应措施 .实验结果表明 ,在测温范围 6 73～14 73K内 ,温度测量的不确定度在 0 .3%以内 ,符合设计要求 .Based on the Kirchhoff law, a practical temperature real-time measurement system using laser diode and LiTaO3 pyroelectric detector was developed. According to the infrared radiation characteristics of the measurement surface, surroundings, transmission features of atmosphere and the temperature measurement system itself, detailed analyses were given on the factors of influencing temperature measurement accuracy. And the measures on improving the temperature measurement accuracy were put forward. Experimental results show that the temperature measurement inaccuracy is within 0. 3%, and it is suitable for the requirements.

关 键 词：测温精度 透射特性 半导体激光器 红外辐射特性 热释电探测器 Kirchhoff定律 测温系统 测温范围 钽酸锂 温度测量 

分 类 号：TN247[电子电信—物理电子学] TH811[机械工程—仪器科学与技术]