摘要
在通信可靠性和安全性要求较高的实时网络中,建议采用改进的环形拓扑.该网络拓扑的主机采用双端口结构.在正常工作时,其主机利用一个端口发送数据;而另一个端口接收自己发送的数据,以监督网络的通信质量.在网络中断时,接收端口也作为应急发送端口使用,以保证网络的畅通;并且系统可以在空闲时自动的查找网络的故障位置.该网络结构在通信质量上与线性拓扑和树型拓扑相同,相比之下仅仅增加了网络的总长.最后以1-wire身份认证系统为例,讨论了该拓扑结构的优点.
This paper proposes an effective improved ring topology for the real-time network with high communication reliability and security. The dual-ports architecture is used in the master of the network. The master will send data by one port and receive data by another in order to monitor the communication quality in the network. When the network breaks down, the receiver can also send data as an emergent port to keep expedite communication. In the meantime, the broken- down position could be checked automatically at free time. The communication quality of this network is similar to the qualities of the linear and tree topologies. It only increases the total network length. Based on an example of the 1-wire identity authentication system, the advantages in this topology are discussed.
出处
《浙江工业大学学报》
CAS
2006年第1期94-96,共3页
Journal of Zhejiang University of Technology
