| 基于Pt100铂热电阻的测温电路设计 |
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| 引用本文： | 于铄航,李建新,贺琳.基于Pt100铂热电阻的测温电路设计[J].工矿自动化,2014(6):113-115. |
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| 作者姓名： | 于铄航 李建新 贺琳 |
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| 作者单位： | 天地(常州)自动化股份有限公司;鄂尔多斯电业局; |
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| 基金项目： | 天地(常州)自动化股份有限公司研发项目(13GY006-01) |
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| 摘 要： | 针对传统的铂热电阻测温方式存在测量结果受线路阻抗影响有误差、电路接线复杂的问题,设计了一种基于Pt100铂热电阻的测温电路;详细介绍了该电路的硬件设计及参数计算。该电路采用差分方式消除线路阻抗引起的测量偏差,并通过改变电路内参考电压的方式调节测温范围。仿真结果验证了该电路设计的合理性与可靠性。
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| 关 键 词： | 温度测量 Pt100 铂热电阻 线路阻抗 差分测量 |
Design of temperature measuring circuit based on Pt100platinum thermistor |
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| YU Shuohang;LI Jianxin;HE Lin.Design of temperature measuring circuit based on Pt100platinum thermistor[J].Industry and Automation,2014(6):113-115. |
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| Authors: | YU Shuohang;LI Jianxin;HE Lin |
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| Affiliation: | YU Shuohang;LI Jianxin;HE Lin;Tiandi(Changzhou)Automation Co.,Ltd.;Ordos Electric Power Bureau; |
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| Abstract: | In view of problems of measuring error caused by line impedance and complex circuit connection existed in traditional temperature measuring method of platinum thermistor,a temperature measuring circuit based on Pt100platinum thermistor was designed.Hardware design and parameter calculation of the circuit were introduced.Differential method is used to eliminate measuring deviation caused by line impedance,and reference voltage is changed to adjust temperature measuring range.The simulation result verifies rationality and reliability of the circuit design. |
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| Keywords: | temperature measuring Pt100 platinum thermistor line impedance differential measurement |
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