通用车载安全平台及内部数据通信接口优化方案研究  

Research on the Optimization Scheme of General Onboard Safety Platform and Internal Data Communication Interface

作　　者：周宇恒 陈宜航 ZHOU Yuheng;CHEN Yihang

机构地区：[1]卡斯柯信号有限公司,上海200072

出　　处：《铁道通信信号》2024年第6期50-56,共7页Railway Signalling & Communication

基　　金：上海市科学技术委员会课题(17DZ1100402)。

摘　　要：为支持多种车载列控产品应用,提升产品的研发效率,对通用车载安全平台及其内部通信进行研究。通过分析通用车载安全平台需实现的功能和接口,确定其系统架构;设计千兆以太网通信,实现平台内部各功能板卡间的高效数据传输;对各功能板卡和内部网络采用冗余设计,提高平台的可用性;为通用车载安全平台的内部通信设计安全通信协议栈,确保数据传输的安全性、完整性、时效性、真实性、有序性。测试结果表明,该安全通信协议可防御标准GB/T24339.1和EN50159中针对封闭式传输系统定义的威胁,通用车载安全平台内部的网络传输时延满足实时性要求。In order to support various onboard train control product application and enhance the research and development efficiency of product,a research is conducted on the general onboard safety platform and its internal communication.The system architecture of general onboard safety platform is determined by analyzing the functions and interfaces that the platform shall fulfill.Gigabit Ethernet communication is designed to achieve efficient data transmission among various functional boards within the platform.Redundancy design is applied to both the functional boards and the internal network to enhance the availability of platform.A set of safety communication protocol stack is designed for the internal communication of platform,ensuring the safety and integrity and timeliness and authenticity and sequence of data transmission.Test results indicate that the safety communication protocol can defend against threats defined in the standards GB/T 24339.1 and EN 50159 for closed transmission system,the network transmission delay within the platform meets the real-time requirements.

关 键 词：通用车载安全平台 安全通信协议 通信协议栈 冗余层 网络传输时延 

分 类 号：U285.49[交通运输工程—交通信息工程及控制]