Dual Safety-Oriented Urban Rail Transit Cloud Signaling System

In order to promote overall construction of smart urban rail and improve digitalization level of signaling, on the basis of ensuring functional safety and cyber security, signaling Cloud-Edge collaboration solution is planned to be researched, including system-level cloud platform architecture and failure mode, automatic train supervision ATS subsystem cloud application standardization, wayside automatic train protection ATP/automatic train operation ATO and interlocking subsystems SIL4 data center architecture, onboard ATP/ATO subsystems Cloud-Edge collaboration mechanism, and data communication DCS subsystem integration with cloud platform. At last, for more and more signaling retrofit projects, discuss the feasibility of Cloud-Edge collaboration solution involved in communication-based train control CBTC system, fully automatic operation FAO system, and train autonomous circumambulation TACS system.