摘要
本文通过对影响测温精确度的主要因素分析，提出了一种提高测量精确度的方法，并且给出了一个实用的电路原理图。文中详细叙述了几个主要单元的功能和工作原理以及计算温度的方法。利用新方法测量，其精确度与环境温度及元器件的参数变化无关。实验结果证实了这种测量方法的优越性。
By analyzing the principal factors which influences the measure-ment precision. an advanced method to improve the measurement prec-ision and a practical circuit diagram is presented. The operation priciple of some primary units and the temperature calculating method are described in details. The measured results are independent of the surrounding temperature. The variation of component values etc. The experimental results have confirmed the advantages of the method.
关键词
温度检测系统
传感器
热敏电阻
constant current source. amplifier. thermal resistor. A/D converter
