摘要
NTC热敏电阻阻值-温度的关系具有非线性特征,本文应用Matlab GUI编写热敏电阻阻值-温度数据处理界面,采用基本指数方程、Steinhart-Hart方程和Hoge-3方程三种不同的校准方程对实验数据进行拟合,研究了校准方程对NTC热敏电阻温度测量精度的影响。结果表明,Hoge-3方程在本文所选取的温度范围内相对于其它两种校准方程具有更精确的拟合能力。
There is a nonlinear relationship between the resistance value( R) of NTC thermistor and temperature( T). In this paper,the MATLAB GUI was used to design the processing interface of R-T data. The experiment data was fitted by employing exponential equation、Steinhart-Hart equation and Hoge-3 equation,respectiely. The effects of the measurement accuracy obtained by different calibration equations were also explored.Our results showed that the Hoge-3 equation could gain a more accurate fitting than that of the other two equations in the temperature range selected in this paper.
出处
《大学物理实验》
2016年第4期78-81,共4页
Physical Experiment of College
基金
上海市磁共振重点实验室研究项目(20151204)
武汉理工大学教学研究项目(W2014081)
