一种具有USB接口的通信控制器的设计实现

变电站自动化系统中常采用CAN总线实现间隔层与变电站层之间的数据通信，因而CAN总线到变电站层PC主机的数据通信成为影响系统性能的一个重要因素。USB总线是一种串行总线标准。文中介绍了一种具有USB接口的CAN通信控制器，该通信控制器具有USB的连接简单、传输速率高的优点，同时在软硬件实现上充分考虑了变电站环境的特点，采取多种措施保证系统通信的可靠性。

DESIGN AND IMPLEMENTATION OF A COMMUNICATION CONTROLLER WITH USB INTERFACE

CAN bus is always used to carry outcom munication between the partition layer and substation layer in a substation autom ation system.Comm unication between CAN bus and PC bus in the substation layer is an im portant factor that affects system perform ance. A CAN comm unication controller with USB interface is described,which has the merits of simple connection and high transmission speed.The features of substation environment have been fully considered in the software and hardware implementation of the com munication controller and many m easures have been taken to guarantee the com munication reliability.