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

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 non-cloud part of ATS is realized through the core switching network of the cloud platform. The application server and interface server are configured with blade servers, and the database server is configured 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. [ABSTRACT FROM AUTHOR]