The Application And Design Of Based On USB Interface Of Communication Controller Which Is In Substation Automatization System

Substation automatization system often uses communication controller to carry out communication with field computer and remote computer. Anti-interference ability of traditional design is usually on ISA or PCI bus, it is not good, and it' s installation is not simple. Now USB is applied abroadly because it has merits of simple installation, good anti_interference , etc. This design was on USB bus, made use of merits of CAN and USB, furthermore many measures had been taken to guarantee the communication reliability. IEC 60870-5-101 protocol is adopted in communication between field computer and remote computer.This article firstly expounded communication controller' s application environment in substation automatization system. Secondly it particularly recommend CAN' s and USB' s protocol and comment. This article combined controller' s hardware design , and explained how to select chip and explained chip' s function. Furthermore this article analysis controller' s software and work principle. And it simply explained WDM' s USB drivers. Lastly, it explained Anti-interference measure.