基于NTC热敏电阻的三种高精度测温系统研究

Study with High Precision on Three Typical Temperature Measurement Based on NTC Thermistor

针对高精度测温的要求,提出了三种基于NTC热敏电阻的高精度测温系统。分别为恒压式测温系统,恒流式测温系统和双积分式测温系统。从系统构成、测温原理等方面对这三种测温系统进行了分析比较,指出各自特点。

Aiming at the requirement of high-precision temperature measurement,this paper presented three typical temperature measurement systems with high-precision based on NTC thermistor.Three systems are constant voltage source temperature measurement system,constant current source temperature measurement system and double-integral principle temperature measurement system.From many aspects like the system constitute,measure principle etc,carry on the analysis comparison to temperature measurement system,and point out respectively a characteristics to these three kinds.