| 基于对数的NTC热敏电阻测温系统的设计 |
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| 引用本文： | 梅小雨,许昌,魏艳红.基于对数的NTC热敏电阻测温系统的设计[J].自动化与仪表,2011,26(5):54-57. |
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| 作者姓名： | 梅小雨 许昌 魏艳红 |
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| 作者单位： | 中国计量学院,机电工程学院,杭州,310018 |
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| 摘 要： | 针对NTC热敏电阻阻值与温度(R-T)的非线性特性,为了提高测温精度,提出一种三阶对数公式法对R-T特性进行分段曲线拟合.该测温系统以三阶对数公式为基础进行了软硬件设计,实现了对船用柴油机的机油温度、冷却水温度的高精度测量.通过实验测试表明,在0～120℃温度范围内,采用该测温系统的测温误差小于±0.3℃.该测温系统已...
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| 关 键 词： | NTC热敏电阻 对数公式法 分段曲线拟合 测温系统 |
Design of Temperature Measurement System for NTC Thermistor Based on Natural Logarithm |
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| MEI Xiao-yu,XU Chang,WEI Yan-hong.Design of Temperature Measurement System for NTC Thermistor Based on Natural Logarithm[J].Automation and Instrumentation,2011,26(5):54-57. |
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| Authors: | MEI Xiao-yu XU Chang WEI Yan-hong |
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| Affiliation: | MEI Xiao-yu,XU Chang,WEI Yan-hong(College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou 310018,China) |
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| Abstract: | Since the NTC thermistor's resistance and temperature(R-T) there is a serious non-linear characteristics,in order to improve the temperature measurement accuracy,design idea about the third-order natural logarithm formula method was put forward which was used for piecewise curve-fitting of R-T's characteristics.The temperature measurement system's hardware and software design is based on the third-order natural logarithm formula method,which realizes high-precision measurements for oil temperature and cooli... |
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| Keywords: | NTC thermistor natural logarithm formula method piecewise curve-fitting temperature measurement system |
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