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The subway monitoring system is mainly used to realize real-time video monitoring of stations, trains, depots, parking lots, main substations, ground and elevated lines. At present, the newly-built subway monitoring subsystem adopts a fully digital network monitoring system. It is mainly composed of front-end CCTV camera China, management servers, video display terminals, control keyboards, and storage equipment, and related application software. The front-end video image is transmitted to the weak current comprehensive machinery room of the station, and images are output through the video distributor: one way is compressed and encoded by the digital video encoder and then connected to the access switch of the station to complete the video exchange and transmission functions of the station; The digital hard disk video recorder in the police communication machinery room is connected to the local video switching matrix through the loop output port; one is used for intelligent analysis.

Under normal circumstances, a server is set up in the weak current integrated machinery room to realize the configuration and management of the closed-circuit television monitoring system of the site; an integrated security management terminal is set up in the vehicle control room to monitor, control, query, call and manage video images; The control room will also have two monitors and control keyboards for traffic and disaster prevention monitoring; monitors are set up at the platform monitoring booth for traffic monitoring; the monitoring terminal is generally set in the station master's room, mainly for station affairs monitoring; at the driver's parking space Set up a monitor to realize real-time monitoring of the waiting situation of passengers on the side of the platform by the driver. Disk arrays are installed in the control center, stations and depots, and the IPSAN method is used to store local video information. Usually, the storage time of the image of the station will reach more than 7 days.

The subway is in an underground closed environment with a large flow of people. If an emergency occurs, rescue is extremely difficult. In addition, the subway system is highly intelligent, the software and hardware systems are huge, and the entire system is in a semi-automatic and fully automatic operation state. Therefore, the subway video monitoring system must monitor the flow of people on the one hand, and provide early warnings for emergencies; on the other hand, it also requires monitoring of the operating status of many equipment, which can provide the monitoring center with the operating status of the equipment in real-time.