| NTC热敏电阻器在高精度温度测量中的应用 |
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| 引用本文： | 于丽丽,王剑华,殳伟群. NTC热敏电阻器在高精度温度测量中的应用[J]. 传感器与微系统, 2004, 23(12): 75-77 |
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| 作者姓名： | 于丽丽 王剑华 殳伟群 |
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| 作者单位： | 1. 同济大学,电子信息学院,上海,200092
2. 同济大学,中德学院,上海,200092 |
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| 摘 要： | 介绍了用NTC热敏电阻器进行高精度温度测量的几点考虑。分析了影响测量精度的各种因素,并提出了一些解决方法,主要的措施有:直流恒流源微安级电流;四线制测量电路;高分辨力(24位)ADC;数字滤波;仪器自校准等。实际测量表明:使用恰当的热敏电阻器在较窄的范围内(0～60℃)测量精度可达±0.001℃。
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| 关 键 词： | 热敏电阻器 高精度温度测量 校准 |
| 文章编号： | 1000-9787(2004)12-0075-03 |
| 修稿时间： | 2004-06-27 |
Application of NTC thermistor in high accurate temperature measurement |
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| YU Li-li,WANG Jian-hua,SHU Wei-qun. Application of NTC thermistor in high accurate temperature measurement[J]. Transducer and Microsystem Technology, 2004, 23(12): 75-77 |
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| Authors: | YU Li-li WANG Jian-hua SHU Wei-qun |
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| Affiliation: | YU Li-li~1,WANG Jian-hua~2,SHU Wei-qun~2 |
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| Abstract: | A few resolvents of the problems in high accurate temperature measurement using NTC thermistors are introduced.The various factors affected measurement accuracy are analyzed,and a few resolvents are advanced.Some measures are used:constant current source offering microampere current,4 wire temperature measuring circuit,ADC with excellent resolution,digital filter,instrument recalibration itself,etc.It is indicated that high accuracy of 0.001 ℃ in a narrow range of temperature (0～60 ℃) can be achieved by using fit thermistors. |
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| Keywords: | thermistor high-accurate temperature measurement calibration |
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