文档介绍：光机电信息
第28卷第7期
OME Information
文章编号:1007-1180(2011)07-0069-05
NTC 热敏电阻的标定及阻温特性研究
关奉伟, 刘巨, 于善猛, 江帆, 杨近松
(中国科学院长春光学精密机械与物理研究所, 吉林长春 130033)
摘要: NTC 热敏电阻的阻值随温度升高而降低, 阻值与温度呈非线性变化关系, 在实际应用中通常需要
进行逐只标定以确定阻温特性。本文以航天热试验用 MF501 型热敏电阻器为例, 介绍了一种简易有效的标
定及数据处理方法, 通过拟合残差、平均误差、传递误差对标定方法进行评估。结果表明, 在使用温度范围
内, 该方法只需标定 3 个点, 就可以使标定误差控制在 ℃以内, 完全满足使用精度要求。随着适当增加
标定点, 标定精度还可以进一步提高。
关键词: NTC 热敏电阻; 标定; 阻温特性; 误差分析
中图分类号: ; TN371 文献标识码: A
DOI:
Calibration and R-T Characteristics of NTC Thermistor
GUAN Feng-wei, LIU Ju, YU Shan-meng, JIANG Fan, YANG Jin-song
(Changchun Institue of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences,
Changchun 130033, China)
Abstract: The resistance of NTC thermistors is decrease with the increase of temperature, and they generally have
nonlinear resistance(R)-temperature(T) behavior. In practice, such thermistor sensor needs to be individually calibrated
over the operating temperature range to ascertain the R-T characteristics. The MF501 thermistor applied in spacecraft
thermal test was illustrated in this paper to introduce a simple and effective calibration and data processing method.
The fitting residual, average error and function transfer error were selected to assess the adequateness of the method.
The result showed that the calibration error could be controlled within