摘要
随着列控系统工程化、国产化的不断深入研究,有必要设计实现具备高性能、高带宽、拥有自主知识产权的通用安全计算机平台,为列控系统各装备提供底层的通用基础软硬件载体。提出一种基于千兆以太网的列控系统地面安全计算机平台设计,通过分析平台的系统功能边界、六类通用接口,确定平台的功能与接口;通过分析平台主流架构的可靠性及安全性,设计平台采用二取二乘二架构;通过分析平台的功能层次,划分平台的软硬件层次及边界。硬件上设计了平台的双以太网总线架构,分析各功能板卡的功能分配,设计了安全计算单元板、接口板的双CPU结构,该结构支持国产、非国产芯片的原位替换。软件上分析了系内二取二同步比较及双系间乘二同步的关键功能,设计了双系4个处理器的同步时序与数据流;分析了平台核心功能—双系切换逻辑,定义了双系工作状态,设计了工作状态转移图与转移事件表。最后,对设计平台的性能进行测试,测试结果表明,该平台的计算性能与带宽比既有平台有显著提升。基于千兆高速以太网的列控系统地面安全计算机平台的性能、可靠性能够满足高铁列控系统地面信号装备(CBI、TCC、RBC、TSRS等)的通用运算及扩展开发需求。
With the continuous deepening research on the engineering and localization of train control systems,it is necessary to design and implement a universal safety computer platform with high performance,high bandwidth,and independent intellectual property rights,which will provide a universal hardware-software foundation for various equipment in train control systems.This study proposed a ground safety computer platform design for train control systems based on gigabit Ethernet.By analyzing the system functional boundaries and six types of universal interfaces of the platform,the functions and interfaces of the platform were determined.Then,by analyzing the reliability and safety of the mainstream architecture of the platform,the platform adopted a 2-out-of-2×2 architecture.The functional hierarchy analysis of the platform enabled clear delineation of software and hardware layers and boundaries.In terms of hardware,a dual Ethernet bus architecture for the platform was designed.The functional allocation of each function-specific board was analyzed,and a dual CPU structure for the safety computing unit board and interface board was designed,which supported in-situ replacement of domestic and non-domestic chips.In terms of software,the key functions of 2-out-of-2 synchronization comparison within the module and 2-out-of-2 synchronization between dual modules were analyzed,and the synchronization timing and data flow for four processors in dual modules were designed.Additionally,the core function of the platform—switching logic between dual modules—was analyzed.The operational states of the dual modules were defined,and a state transition diagram and event table were designed.Finally,performance testing was conducted on the designed platform.The results showed that the platform demonstrated significant improvements in computing performance and bandwidth compared to existing platforms.The performance and reliability of the ground safety computer platform for high-speed train control systems based on gigabit Ethernet met the general computing and scalable development requirements of ground signal equipment(CBI,TCC,RBC,TSRS,etc.)in high-speed railway train control systems.
作者
郑长宗
于健洁
任飞
魏东冬
ZHENG Changzong;YU Jianjie;REN Fei;WEI Dongdong(Signal and Communication Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)
出处
《铁道标准设计》
北大核心
2025年第7期171-178,共8页
Railway Standard Design
基金
中国国家铁路集团有限公司科技研究开发计划课题(P2019G034)
中国铁道科学研究院集团有限公司科研项目(2021YJ018)。
关键词
高速铁路
列控系统
安全计算机平台
自主知识产权
千兆以太网
同步比较
切换
high-speed railway
train control system
safety computer platform
independent intellectual property rights
gigabit Ethernet
synchronous comparison
switching
作者简介
郑长宗(1984-),男,副研究员,2011-年毕业于中国铁道科学研究院交通信息工程及控制专业,工学博士,主要从事高铁列控系统研究工作,E-mail:zhengtky@163.com。
