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The neighborhood is surrounded by a rectangular wall of 1100*360 meters, each with a gate on the east and west. Video surveillance is applied to all walls and gates. A high-power lens can be used to monitor the area 180 meters in front. This requires the deployment of 22 monitoring sites: a total of 16 monitoring sites on both sides of the fence, corresponding to a 16-channel high-multiplexing monitoring host; the four corners of the fence (the northeast corner of the community, Northwest corner, southeast corner, southwest corner, east-west direction monitoring), use four-channel video server; north-south front gate corresponds to two single-channel servers. The property center and each monitoring center establish a local area network with thick cables and Cat 5e cables. As shown in the figure:
A video server (community monitoring center 1) is installed at the gate guard at the front gate (East Gate) of the community, which is mainly responsible for monitoring and recording the entrance and exit of people and vehicles at the front gate. (Ximen handles the same thing)
A surveillance point is set up every 160 meters on the north and south walls of the community to monitor the activities on the wall. The surveillance point cameras are connected to the monitoring center (community monitoring center 2) through analog signal lines (some of which need to be connected to the video amplifier distributor and wireless equipment) )connect. Considering that the monitoring points of the fence, especially the sides where the door is not open, will not generate a lot of valid data (referring to the video data generated when there is activity). The main application is to plan the defense function. Events such as crossing the wall trigger the video movement detection function. The monitoring personnel of the monitoring center 2 can deal with it in time, or obtain evidence after the accident.
Monitoring points are placed at the four corners of the community, and a 20-fold lens is used to monitor an area 180 meters ahead. Since it is basically similar to a side wall, it is also managed by the monitoring center 2.
Save disks in the above two types of monitoring centers, and make unified backups by the property center. The property management department can monitor the surveillance scene through images transmitted through the network.
When you need to obtain evidence, you can use the dedicated playback software to obtain evidence from the video data on a certain day of the previous month or earlier through the backup data of the property center.
The picture shows the network structure diagram of the digital surveillance video recording system established by the community:
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