| Summary: | [Objective] With the theme of promoting urban rail transit information, developing intelligent system, and building 'smart urban rail' for a highly integrated urban rail transit cloud platform is the direction of technological development in the new era. The integration of signaling system and cloud platform is an important development trend of signaling systems. In-depth research is needed on how to build an efficient, reliable, and cost-effective signaling system based on cloud architecture. [Method] Combining the needs of Changzhou Metro new round of urban rail transit construction scheme, based on the technological characteristics of existing cloud platform and current situation of signaling system, the feasibility and construction scheme of signaling system cloudification are analyzed and verified. The research of contents such as line network unified ATS (automatic train supervision) construction scheme, signaling system cloudification scope, cloud platform architecture selection, and signaling system ATS interoperability scheme after cloudification are emphasized. [Result & Conclusion] The definition of signaling system cloudification is clarified, discussing the feasibility of signaling system ATS cloudification. According to the estimation whether the signaling system can pass SIL2 (safety, integrity level 2) after cloudification, a list of specific equipment for ATS cloudification is determined. The new-generation signaling system construction scheme based on cloud architecture is proposed, and the urban rail transit cloud platform architecture carrying ATS is suggested to transit from mode 1 to mode 3 gradually, possessing the ability to update and iterate. Signaling system equipment can level up the processing capacity of the signaling system and reduce hardware device amount after integration into cloud platform, contributing to realizing line network resource/information exchange and promoting modulating the development of intelligent scheduling.
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