云联锁系统冗余结构研究  

Research on redundant structure of cloud-based interlocking systems

作　　者：何志彬 邢科家 梁志国 魏东冬 郑长宗 HE Zhibin;XING Kejia;LIANG Zhiguo;WEI Dongdong;ZHENG Changzong(Postgraduate Department,China Academy of Railway Sciences,Beijing 100081,China;Signal&Communication Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院研究生部,北京100081 [2]中国铁道科学研究院集团有限公司通信信号研究所,北京100081

出　　处：《机车电传动》2023年第6期147-155,共9页Electric Drive for Locomotives

基　　金：中国国家铁路集团有限公司科技研究开发计划项目(J2021G006);中国铁道科学研究院集团有限公司科研项目(2022YJ063)。

摘　　要：为保障联锁系统在云平台中的运行安全,文章通过对既有计算机联锁系统冗余结构进行分析,结合云平台特征,提出了基于虚拟机容错技术的云联锁系统冗余结构。首先,阐述了云联锁冗余结构的特点和优势。其次,通过对云联锁冗余结构的工作模式和服务器失效因素进行分析,建立服务器故障树模型、云联锁系统冗余结构关于危险失效概率PFD和安全失效概率PFS的动态故障树模型。最后,对云联锁冗余结构的可靠性进行研究,对动态故障树模型进行仿真分析。研究结果表明:云平台更适合部署形如Moo N结构的多重冗余结构联锁系统,开展云联锁冗余结构研究对云联锁的发展具有一定的借鉴意义。In order to ensure the operational safety of interlocking systems within cloud platforms,this paper presented a redundant structure for cloud-based interlocking systems based on virtual machine fault tolerance technology,through analyzing the redundant structure of the existing computer-based interlocking systems and considering the characteristics of cloud platforms.Firstly,the characteristics and advantages of the redundant structure of cloud-based interlocking systems were elaborated.Subsequently,this paper analyzed the working mode and server failure factors,and established a server fault tree model and dynamic fault tree model to evaluate the probability of failure on danger(PFD)and probability of failure to safety(PFS).Finally,the reliability of the redundant structure of cloudbased interlocking systems was assessed by simulation analysis using the dynamic fault tree model.The results indicate that cloud platforms are more suitable for deploying interlocking systems in multiple redundant structures such as MooN structures.This research on the redundant structure for cloud-based interlocking holds certain reference significance for the development of cloud-based interlocking systems.

关 键 词：铁路联锁系统 云计算 冗余结构 动态故障树 失效概率 高速铁路 

分 类 号：U284.3[交通运输工程—交通信息工程及控制]