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介绍一种以热敏电阻为基础的电子式体温计。该温度计由以下几部分组成:热敏电阻制成的测温探头,惠斯顿电桥、取样保持电路和一个微安表。温度的变化引起热敏电阻阻值的变化,从而使电桥失去平衡,引起流过微安表的电流发生变化。就利用这个电流的变化作为温度的量度。这种体温计的测温范凼为35～41℃,测温精度为0.1℃。还给出了该温度计的理论及部分实验结果。
A thermistor-based electronic thermometer is introduced. The thermometer consists of the following components: temperature probe made of thermistor, Wheatstone bridge, sample and hold circuit and a microammeter. Changes in temperature cause changes in the resistance of the thermistor, causing the bridge to become unbalanced, causing the current flowing through the microammeter to change. Take advantage of this current change as a measure of temperature. The temperature measurement of this thermometer Taipa 35 ~ 41 ℃, temperature measurement accuracy of 0.1 ℃. Also given the thermometer theory and some experimental results.