To solve the shortcomings of long switching time and poor reliability in the double-system hot standby switching of the vital computer platform of existing signaling systems,this paper presents the design of a switching module with high reliability and safety.It also provides the analysis and verification of the system scheme and control logic of the proposed module.When any system of the vital computer platform is abnormal,the main and backup systems of the platform and the safe switching module determine the status of the main and backup systems after the secure communication and operation of the dual-mode interface.This enables the fast,undisturbed and safe switching and smooth operation of the platform,thereby improving system safety and reliability.
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