一种非主从式通信的多单片机测控系统

A multi processor control system based on non_masterslave communication

在共享总线结构的计算机网络中,通常使用CSMA/CD作为介质访问控制协议。在访问发生冲突时,CSMA/CD使冲突的各节点都退避一段时间后再重发,这降低了介质的利用率。本文以一个多单片机通信系统为例,给出了一种新的介质访问控制协议。该协议基于各节点输出的线与连接和各节点的优先权链式安排,即使在访问发生冲突时,总有一个优先权最高的节点取得通信控制权。因此,与CSMA/CD相比,新协议的介质利用率较高。

Presents a new media access control protocol based on a wired_AND output interconnected and a priority chain,to improve the utilization ratio of medium in a network, illustrates by a multiple computer on-slice communication system using the protocol, and the protocol ensures the highest priority access point obtain the right to the use of media even if collision occurs,and concludes the protocol is more efficient than CSMA/CD (Carrier Sense Multiple Access/Conllision Detection).