模拟量及数字通信隔离电路

Analog and digital communication isolation circuit

自动控制系统中,经常需要对模拟量的集中输入或集中输出及通过RS-485总线的主从式控制。如果不加以隔离,整个系统共用一个地,系统将工作在非常不稳定的状态,存在一定的安全隐患。本文介绍的模拟及数字通信隔离电路可以根本上解决上述问题。

In the automatic control systems,we often need centralized input or centralized output of analog and Master-Slave control through RS-485 bus.If the whole system share a common ground without isolating,the system will work in a very unstable state and are safety risks.The analog and digital communication isolation circuit introduced in this article can fundamentally solve the above problems.