In order to improve the precision of temperature measurement in the solar heat pump system,a calibration method of temperature measurement is proposed to improve the temperature sensor of the Cu50 thermal resistance.Using multi-point calibration of Cu50 thermal resistance temperature sensor measures the data of the R-T relationship characteristics,and this relationship is segmented.Then optimal correction equation of Cu50 thermal resistance temperature sensor is obtained using the principle of least squares fitting and accuracy evaluation.The experimental results show that this calibration equation has a high degree of approximation to the measured R-T characteristics,which improved the accuracy of the measurement of the solar heat pump system.%为了提高太阳能热泵系统中温度测量的精度,该文提出一种Cu50热电阻温度传感器的校正测温方法.首先采用多点标定Cu50热电阻温度传感器测出的数据得出R-T特性关系并对此关系进行分段,然后利用最小二乘法拟合和拟合精度评估原理得出Cu50热电阻温度传感器的最佳校正方程.经实验验证,此校正方程与实测R-T特性关系的逼近度高,提高了太阳能热泵系统测温的准确性.
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