一种利用激光并采用热电器件实现的实时测温系统  

A Real-time Temperature Measurement System Using Lasers and Pyroelectric Detector

作　　者：施德恒[1] 黄国庆[1] 刘玉芳[2] 陈玉科[1] 李继芳[3] 

机构地区：[1]空军第一航空学院基础部,信阳464000 [2]河南师范大学物理系,新乡453002 [3]信阳师范学院计算机中心,信阳464000

出　　处：《仪器仪表学报》2004年第3期288-293,297,共7页Chinese Journal of Scientific Instrument

基　　金：河南省科技攻关计划项目 ( 0 0 112 0 3 2 1)

摘　　要：介绍了一种利用半导体激光器 In Ga As/ I作光源 ,使用钽酸锂热释电探测器作光接收器件 ,以 80 31单片机为核心实现的中、高温度实时测量系统。该系统主要由光学发射与接收系统、信号放大与处理系统及显示系统三部分组成。还介绍了该系统的基本原理与结构 ,讨论了调制盘的设计与光干扰及其抑制的方法 ,并分析了温度的测量精度。实验结果表明 ,在要求的测温范围 4 0 0～ 12 0 0℃内 ,测温精度符合设计要求 ,且与理论分析结果相一致 。It presents a new kind of the temperature real-time measurement system using laser diode InGaAs/I as a light source,using pyroelectric detector LiTaO 3 as optical receiving unit and 8031 chip microprocessor as signal processing center.This instrument consists of three parts:optical emitting and receiving system,signal amplifying and controlling system,and display system.The principle and structure of the instrument are introduced.Design of the chopper,light disturbing and its suppression are discussed.Temperature measurement accuracy is analyzed.Experimental results also show that the measurement accuracy is suitable for our requirements in the range of 400～1200℃ and coincides with theory.These prove that the design is suitable.

关 键 词：热释电探测器 温度测量 半导体激光器 实时测量 辐射测温 单片机 热电器件 

分 类 号：TH811[机械工程—仪器科学与技术] TP274[机械工程—精密仪器及机械]