Lonworks技术在保护接入通讯装置中的应用研究

对变电站中的保护接入通讯装置的设计进行了简要的介绍,主要讨论了Lonworks技术在装置中的应用.Lonworks技术体现在装置的Lonworks接口模块中,其核心器件是32位MC68332单片机和神经元芯片CY7C531 20E2,神经元芯片具备了通信与控制功能,并且固化了ISO/OSI的全部7层通信协议,Neuron C语言使得程序编写简单.处于slave B模式的神经元芯片实现MC68332与Lonworks节点通讯,处于master模式下的MC68332通过与神经元芯片并行口交换令牌将Lonworks总线上各节点传来的数据转换,再经过以太网控制器送入以太网中,解决了原有控制网络通信速度慢、拓扑结构不合理的问题.

Application and Study of Lonworks Technique in Protection Insert Communication Device

A proctection insert communication device in transformer substaction is described. It describes the application of Lonworks technique used in device in detail. Lonworks technique applies to Lonworks interface module. MC68322 and Neuron Chip CY7C53120E2 are nucleus of Lonworks interface module. Neuron Chip which contains LonTalk protocol in all seven lays has the function of communication and control. The application of Neuron C programming language gives programmers convenience. Neuron Chip in slave B mode is a communication bridge between MC68332 and Lonworks BUS. It controls ISA Ethernet controller and passes token with Neuron Chip by parallel I/O interface, then transforms datum from nodes in Lonworks BUS and transfers them to ISA Ethemet. The Lonworks technology improves communication perormance of original control networks.