基于Slave_B并行传输模式的双绞线LON节点

摘要

为解决LonWorks节点在复杂对象中控制能力较弱的问题,介绍了一种利用单片机AT89S51和神经元芯片MC143150构成主机型节点的设计过程.主机AT89S51与从机MC143150之间采用Slave_B并行传输模式,数据通信通过传递虚拟令牌得以实现,解决了数据总线冲突问题.节点利用FTT-10双绞线收发器搭建的节点网络接口,通过iLON100服务器构建的主干式网络实现了节点实时性高的多进程、多任务的并行处理.在电力系统的实际应用表明基于Slave_B并行传输模式的LonWorks节点运行稳定可靠.%Host LonWorks node based on microcontroller AT89S51 and neuron-chip MC143150 was designed aimed at improving its control abiliiy in complex control object.LonWorks node realized data communication throught Slave_B parallel transmission mode between master processor AT89S51 and slave processor MC143150.It solved the problem of data bus preemption through virtual token transmission.Node network intedace was constructed by twisted-pair line transceiver FTT-10 , backbone network constructed by LonWorks node and iLON100 server peTformed real-time and multi-process and multi-task parallel processing.Practical application in electric power system shows LonWorks nodes based on Slave_B parallel kansmission mode keep stable and reliable operation.