热敏电阻特性测量实验的拓展研究  

Expanding Research on Experimental Measurement of Thermistor Characteristics

作　　者：李志华[1] 宋佩君[1] Li Zhihua;Song Peijun(Wuhan University of Technology,Wuhan,China)

机构地区：[1]武汉理工大学,湖北武汉

出　　处：《科学技术创新》2023年第20期39-43,共5页Scientific and Technological Innovation

摘　　要：负温度系数(Negative Temperature Coefficient,NTC)热敏电阻阻值-温度的关系具有非线性特征,本文使用基本指数方程、Steinhart-Hart方程和Hoge-3方程分别对三种不同的NTC热敏电阻的实验数据进行拟合,应用MATLAB编写程序,评估了校准方程对NTC热敏电阻温度测量精度的影响。对应用热敏电阻设计温控电路进行了拓展研究,并给出了设计实例。The relationship between resistance value and temperature of Negative temperature Coefficient(NTC)thermistors has nonlinear characteristics.In this paper,the basic exponential equation,Steinhart Hart equation and Hoge-3 equation are used to fit the experimental data of three different NTC thermistors,and the MATLAB program is used to evaluate the impact of the calibration equation on the temperature measurement accuracy of NTC thermistors.We have conducted extensive research on the application of thermistors to design temperature control circuits,and provided design examples.

关 键 词：负温度系数热敏电阻 校准方程 MATLAB 

分 类 号：O4-34[理学—物理]