热敏电阻校准点对分布拟合结果影响研究  

Study on the Influence of Thermistor Calibration Points on Distribution Fitting Results

作　　者：李艾橘 温换英 王海涛 LI Aiju;WEN Huanying;WANG Haitao

机构地区：[1]广东省计量科学研究院东莞计量院 [2]辽宁省计量科学研究院

出　　处：《计量与测试技术》2022年第11期1-3,共3页Metrology & Measurement Technique

基　　金：东莞市社会发展科技项目(项目编号:20211800902252);广东省市场监督管理局2022年度科技项目(项目编号:2022CJ01);广东省计量科学研究院东莞计量院内项目(项目编号:2021KY001)。

摘　　要：负温度系数热敏电阻是电阻值随温度升高而降低的热敏电阻传感器,具有稳定性好、响应快、寿命长、成本低等特点。由于热敏电阻互换性较差,因此,在使用前需要进行温度-电阻曲线拟合。本文针对S-H和HOGE-2两种常用拟合方程,讨论了拟合数据采集方法对拟合结果的影响。结果表明,温度均匀分布选点策略可以得到较好的拟合结果。Negative temperature coefficient thermistor(NTC)is a thermistor sensor which resistance decreases with increasing temperature.NTC has the characteristics of good stability, fast response, long life and low cost.Due to the poor interchangeability of thermistors, temperature-resistance fitting is required before use.In this paper, the influence of fitting data acquisition method on the fitting results is discussed for the two commonly used fitting equations of S-H and HOGE-2,and the results show that the temperature uniform distribution point selection strategy can obtain good fitting results.

关 键 词：负温度系数热敏电阻 温度-电阻拟合 选点策略 

分 类 号：TB9[一般工业技术—计量学]