基于云架构的城市轨道交通信号系统方案研究

Research on Urban Rail Transit Signal System Scheme Based on Cloud Architecture

传统架构下信号系统有很高的独立性,无法实现多系统间信息融合。为实现与城轨生产网的信息共享及大数据挖掘,可选择将信号ATS子系统纳入城轨云平台。在保证信号系统核心设备独立性、安全性的基础上,将ATS子系统中心级服务器、工作站纳入云平台,以1.0的复用比为例计算了ATS子系统的计算资源需求。ATS上云部分与非云部分的连接通过云平台核心交换网络实现;应用服务器及接口服务器配置刀扇式服务器,数据库服务器配置机架式服务器。为满足ATS子系统冗余及无扰切换要求,云平台为ATS子系统提供两套配置相同的服务器资源;考虑到城轨信号系统需满足信息安全等级保护3级的要求,云平台均应按照信息安全等级保护三级进行建设。

The signal systems under the traditional architecture have a high degree of independence and cannot achieve information fusion among multiple systems.In order to realize information sharing with the urban rail production network and enable big data mining,the signal ATS subsystem can be included in the urban rail cloud platform.On the basis of ensuring the independence and safety of the core equipment of the signal systems,the ATS subsystem center-level servers and workstations are included in the cloud platform.This paper calculates the computing resource requirements of the ATS subsystem with a reuse ratio of 1.0 as an example.The connection between the cloud part and the noncloud part of ATS is realized through the core switching network of the cloud platform.The application server and interface server are confi gured with blade servers,and the database server is confi gured with a rack server.To meet the requirements of ATS subsystem redundancy and undisturbed switching,the cloud platform provides two sets of server resources with the same configuration for the ATS subsystem.Considering that the urban rail signal systems need to meet the requirements of Level 3 of Information Security Level Protection,the cloud platform should also be built according to Level 3.