摘要
令牌总线具有无竞争冲突、可靠性好、实时性好、在重负载情况下吞吐量不受影响等优点 ,是一种应用广泛的局域网络标准 (IEEE80 2 .4 ) .提出了一种基于令牌总线的楼宇访客系统的方案设计 ,较好的解决了总线上信息碰撞的问题 .与查询方式相比 ,主机的通信负担较轻 .系统中任意两个站点之间均可直接通信 ,不须经主机转发 .系统维护由各分站点和主站点共同完成 ,故障站点可随时从网络中去除 ,不会影响系统的工作 .对所采用的网络拓扑结构和维护算法进行了讨论 .
As a widely used LAN standard(IEEE802.4), token bus has many advantages such as no competitive conflict, good reliability, good real-time quality, being unacted on throughput in heavy load and so on. In this paper, the design of building calling system based on token bus is introduced. It solves the problem of information collision in bus. Compared with query mode, the main node has less load in communication. Any two nodes in system can communicate directly instead of transmission by main node. Sub-nodes and main node do the maintenance of system together. Failure nodes can be wiped off from the network at any moment without impact to system. The network topology used and the maintenance algorithm are discussed.
出处
《山东大学学报（工学版）》
CAS
2004年第5期122-124,共3页
Journal of Shandong University（Engineering Science）
