一种新型的直流电压隔离变送器

使用V／F与F／V转换器可以实现电压与频率、频率与电压的转换，中间用光电耦合器进行隔离，就可以构成一个物美价廉的直流电压隔离变送器，为了改善V／F转换器的线性，增加一些外围线路，经过实验，证明此设计具有高线性、低温漂；隔离性能好、抗干扰能力强等优点，可以广泛应用于以计算机实施的过程控制与自动监测系统中。

A New Kind of DC Voltage Isolation Transducerc

V/F and F/V are used to make the conversion between DC voltage and frequency. Between the two converter, an optoelectroic coupler is used as a isolater. Thus, a DC voltage isolation of high performance and low cost is constructed .some peripheral circuits are added to improve the linearity of the V/F converter. And it has been proved by experiments that this design has good linearity, low temperature drift, high isolation, good capability of anti_interference, etc. It can be widely used in process control and automatic monitoring systems which are implemented with computers.