摘要： 以无源电子狗Electronic-dog 为核心，采用RS-485 标准设计了动态树—总线链式拓扑结构；提出按优先级进行分组存储转发的局域网模式，使该网络具备可靠性、实时性、扩展性、硬件互换性、故障诊断性能都十分优良的新型网络结构。

关键词: Electronic-dog；动态树—总线链式结构；双向优先；分组存储转发；时间片；优先轮询

Abstract: While focusing on the no power electronic-dog, the article designs the dynamic tree-bus topology structure which use link, adopting the standard of RS-485 and putting forward LAN pattern saved and transferred by group according to its priority, which make the network be a new outstanding network structure in its reliability, real time, expansibility, hardware interconversion and breakdown diagnose

Key words: Electronicdog; Dynamic tree-bus topology structure using link; Bi-directional priority; Saved and transferred by group; Time slice;Priority polling