客专安全数据网业务可靠性模型及仿真分析  

Service Reliability Model and Simulation Analysis of PDL Safety Data Work

作　　者：林康莉 徐中伟[1] 梅萌[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《计算机仿真》2015年第11期274-278,共5页Computer Simulation

基　　金：2013年中国铁路总公司科技研究开发计划课题(2013X016-B);2012年国家高技术研究发展计(863计划)课题(2012AA112801);国家"十二五"科技支撑计划项目(2011BAG01B03)

摘　　要：客专安全数据网联结铁路信号系统的各个设备,关系行车安全,有较高的可靠性要求。在研究一般网络可靠性的基础上,针对客专安全数据网的特点,提出由业务连通可靠度以及双指标性能可靠度构成的可靠性度量方法,形成客专安全数据网的业务可靠性模型。然后通过构建二叉决策图求解模型中业务连通可靠度,并通过OPNET网络仿真计算双指标性能可靠度,模型求解的结果验证了客专安全数据网的可靠性。Passenger Dedicated Line （PDL） safety data network connecting devices in railway signal system is related to the safety of train and is required to be highly reliable. On the basis of research of network reliability, this paper proposes a reliability measurement method constituted of connectivity reliability of service and performance reliability of double indexes. A service reliability model is established according to the feature of PDL safety data network. This paper uses Binary Decision Diagram to calculate the connectivity reliability of service. And performance reliability of double indexes is calculated by network simulation of OPNET. The calculation result of the model confirms the reliability of PDL safety data network.

关 键 词：客专安全数据网 业务可靠性模型 二叉决策图 网络仿真 

分 类 号：N945.12[自然科学总论—系统科学]