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YU Shuohang, LI Jianxin, HE Lin. Design of temperature measuring circuit based on Pt100 platinum thermistor[J]. Journal of Mine Automation, 2014, 40(6): 113-115. DOI: 10.13272/j.issn.1671-251x.2014.06.030
Citation: YU Shuohang, LI Jianxin, HE Lin. Design of temperature measuring circuit based on Pt100 platinum thermistor[J]. Journal of Mine Automation, 2014, 40(6): 113-115. DOI: 10.13272/j.issn.1671-251x.2014.06.030
shu

Design of temperature measuring circuit based on Pt100 platinum thermistor

  • 1.

    Tiandi (Changzhou) Automation Co., Ltd., Changzhou 213015, China

  • 2.

    Ordos Electric Power Bureau, Ordos 017000, China

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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 Pt100 platinum 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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