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  • Wireless network video surveillance applications

        With the rapid development of video surveillance, a simple wired network can not fully meet the demand, nor the most economical way. Therefore, wireless network monitoring as a special wireless network used by integrators increasingly optimistic about the increasing number of monitoring systems using wireless means, to establish a point of being monitored and the connection between the monitoring center.

    1. The advantages of wireless video surveillance network

        Traditional wireless network monitoring and surveillance program compared with the following advantages: (1) easy to install (2) flexible networking (3) low maintenance costs (4) scalability.

    2.  wireless range of network video surveillance applications

        Video surveillance can be widely used in WLAN range, scattered security monitoring, traffic monitoring, industrial monitoring, home monitoring and many other fields, in general, are:
        (1) teller machines, bank tellers, supermarket, factory, etc. wireless network monitoring;
        (2) care, kindergartens, schools and other services to provide remote wireless monitoring;
        (3) power station, the mobile base station unattended system;
        (4) oil, drilling, exploration and other wireless monitoring system;
        (5) intelligent buildings, intelligent community wireless management system;
        (6) pipeline monitoring, wireless monitoring warehouse;
        (7) 24-hour monitoring of road traffic;
        (8) forest, and water resources of the wireless remote monitoring;
        (9) Outdoor equipment monitoring and management;
        (10) bridges, tunnels, crossing traffic control system.

    3. outdoor networking

        There are outdoor Wireless LAN in the following structure: point-based, multi-point and mixed.
        (1) point type
        Fixed-point type to be used in the network between two locations is a common way of wireless networking. This networking built network, the advantage of transmission distance, transmission rate is high, less affected by the external environment, the pattern shown in Figure 1.
        (2) multipoint type
        Multipoint type commonly used in a center, more remote spots. Its biggest advantage is low cost networking, maintenance is simple, Second, because of the use of omni-directional antenna center, equipment commissioning is relatively easy. The disadvantage is that the network because of the use of omni-directional antenna, omni-directional beam spread so much power attenuation, the network transmission rate is low, for a more long-distance remote point, network reliability can not be guaranteed.
        (3) mixed
        This type was built for long-distance network in the point, close the point, there are buildings or mountains blocking point. In the formation of this network, the integrated use of the several types of networks, is critical for long-distance point to use point to point mode, close-to-multipoint mode using multiple-point, point have stopped using relay mode.

    4. Projects

        "Wireless network video monitoring system" project in the unified planning and management, based on the way fixed camera locations, using a variety of video capture terminal equipment (gun-type network cameras, digital network ball cameras, network video server, infrared night view camera, etc.), in the traffic environment, the mountain environment and the high-rise environment, different location, different angles of the important scenes of the regional community and the main part of the high-quality image capture and the captured image transmission via radio waves transmitted to the monitoring center.

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