一种多点长距离有线通信系统的设计

Design for a Kind of Multi-point and Long Distance Wire Communication System

提出了一种新颖的多点长距离有线通信系统的设计方案 ,它采用令牌环总线的通信方式 ,在其基础上又加入了一条专门的通信检测电路 ,从而保证了通信的可靠性并克服了现在一般数据采集站中从站间通信困难的缺点。当主站广播数据至各从站时 ,采用硬件转发方式 ,大大提高了通信效率 。

Introducesa new solution formulti- pointand long distancewire communication system,in which thetoken ring bus is used.Additional,a special test circuit for communication is affiliated to increase the reliablity of the system.This design overcomes the obvious difficulty of the communication between the slave stations in data acquiration station.In this system,the hardware relay mode is used when the master station propagating datas to each slave station,which improves the communication efficiency and at the same time extends the valid communication distance to kilometers.