水泵效率在线监控系统中温差测量的研究

A study of the temperature difference measurement for the pump efficiency online monitoring system

采用频率同步检测、时钟晶体恒温控制和低频传输等方法 ,研制出用石英晶体温度传感器和以单片机为核心的二次仪表构成的温差测量仪 ,实现了精度为± 0 .0 5℃的温差测量 。

Using the method of low frequency transmission, temperature controlled clock quartz crystal and frequency synchronous detection, the author designed a temperature difference detector with the quartz crystal as the temperature sensor and a microcomputer as the main part. The accuracy of the temperature difference hereby measured is within + 0.05 ℃, which has satisfied the requirement of pump efficiency online monitoring system.