Platform door safety protection method and equipment for dual-system signal system and medium

The invention relates to a platform door safety protection method and device for a dual-system signal system and a medium, the dual-system signal system is a quasi-moving block system TBTC system based on a track circuit and a moving block system CBTC system based on continuous communication, and the TBTC system comprises a compatible vehicle-mounted system and a trackside system. The trackside system comprises an interlocking subsystem, a TMLK subsystem and a track circuit, and the platform door safety protection method comprises the steps that according to the running condition of a train in a platform, the trackside system and the compatible vehicle-mounted system are jointly responsible, and safety protection of the platform door is achieved through different protection passages; and meanwhile, the state of the platform door is associated to the control line cutting state, and after the train passes through the signal machine which is introduced into the platform and departs from the platform, the running