一种光纤隔离式温度采集变送器设计

Design of an Optical Fiber Isolated Temperature Acquisition Transmitter

阐述基于变频器散热器的温度测量,设计一套基于PT100热电阻的温度采集变送器,将被测温度转换为频率信号后经光纤隔离输出。探讨硬件设计,进行了测温实验,实验结果表明该变送器测试精度高,抗干扰性能强。

This paper describes the temperature measurement based on frequency converter radiator, designs a set of temperature acquisition transmitter based on PT100 thermal resistance, converts the measured temperature into frequency signal and outputs it through optical fiber isolation. The hardware design is discussed and the temperature measurement experiment is carried out. The experimental results show that the transmitter has high measurement accuracy and strong antiinterference performance.