Ac- cording to the common use in measurement and control system,such as digital I/O,analog I/O, communication,this article design relevant circuit which use optocoupler to isolate signal.

• 在信号隔离传输中采用光电耦合器,并介绍了在智能测控系统中常用的数字量I/O、模拟量I/O、通讯等光耦隔离技术,在实际应用中已取得了良好的效果。