Abstract: A processing method for preventing electromagnetic induction when a main system and a standby system of a safety drive unit co-drive a relay. The method includes the following steps: periodically acquiring and detecting a drive command; detecting a port state of an output port of a safety drive unit when the drive command changes; performing a corresponding processing operation according to the port state of the output port; and repeating the foregoing steps.

Abstract: The present invention relates to a platform door control apparatus based on a double 2-vote-2 architecture, including a security communication and logic processing module, a driver collection module, and a maintenance module, the security communication and logic processing module is separately connected to the driver collection module and the maintenance module, and both the security communication and logic processing module and the driver collection module are devices using the double 2-vote-2 architecture. Compared with the prior art, the present invention has the following advantages of effectively improving linkage efficiency of a signal system and a platform door system, and the like.

Abstract: A redundant network IP smart failover method and system based on a redundant computer. Each computer in any computer group comprises an IP address switching module, a network status detecting module, and a peer fault detecting module. The IP address switching module is configured to smoothly switch an IP address in the redundant network. The peer fault detecting module is configured to mutually exclusively and stably acquire operation statuses of peer computers and quickly obtain a correct redundant network IP when necessary. The network status detecting module is configured to determine statuses of local and remote networks to facilitate the IP address switching module to smartly switch the IP address. Configuring a network status detecting module and a peer fault detecting module to aid the IP address switching module to allocate IP addresses more smartly can significantly improve reliability of the redundant network and effectively reduce IP conflicts during the redundant network failover process.

Abstract: Disclosed are a redundant network IP smart failover method based on a redundant computer and a corresponding system. Each computer in any computer group comprises an IP address switching module, a network status detecting module, and a peer fault detecting module, wherein the IP address switching module is configured to smoothly switch an IP address in the redundant network; the peer fault detecting module is configured to mutually exclusively and stably acquire operation statuses of peer computers and quickly obtain a correct redundant network IP when necessary; and the network status detecting module is configured to determine status of the local network and status of the remote network to facilitate the IP address switching module to smartly switch the IP address.

Abstract: The present invention relates to a platform door control apparatus based on a double 2-vote-2 architecture, including a security communication and logic processing module, a driver collection module, and a maintenance module, the security communication and logic processing module is separately connected to the driver collection module and the maintenance module, and both the security communication and logic processing module and the driver collection module are devices using the double 2-vote-2 architecture. Compared with the prior art, the present invention has the following advantages of effectively improving linkage efficiency of a signal system and a platform door system, and the like.

Abstract: A new type of turnover lift foot valve, including valve body, opening mechanism, valve core, guide mechanism and recovery mechanism; the valve body is set with two guide mechanisms, which are symmetrical and on both sides of valve core. The guide mechanism is provided with main guide rod at one end and with guide groove; there is side guide rod extending into the guide groove; the side guide rod is provided with bearing sleeve. The recovery mechanism includes spring and spring cage, the spring is set between valve core and spring cage; the spring cage is connected to the guide mechanism. Guide groove of the foot valve is in arc shape, so that valve core can deviate from the right above of valve opening and fluid cannot flow into valve body not only from the side of valve opening but also from the right above, which increases flow rate, improves working efficiency and solves the problems of traditional lift foot valve that flow rate is small and unloading is slow due to blockage by valve core.