Wireless monitoring systems
2009-12-18 04:51:30
I will try to explain the principles of the state and the basic advantages and disadvantages of monitoring systems based on wireless cameras
Wireless cameras have a built-in transmitter. Responsible for sending the image via radio to the receiver, which is chosen by our site such as near the CCTV operator position where they can no longer directly connected to a recorder or monitor.
Such a solution is much more convenient, that does not require a direct cable connection from the recorder, cctv 1, however, if the server does not mean that the camera is completely devoid of wiring. Each camera requires power to work we need to somehow bring the camera. This may be directly from the mains (230V) or via UPS. (Eg, 12V) or from the battery in places where the supply of power cable is impossible.
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However, despite their advantages of wireless systems are also quite a few drawbacks. The main drawback of systems based on closed-circuit television cameras wireless is sensitive to external factors, such as electromagnetic interference. Also the range of transmitters is not unlimited and depends on the terrain in which to operate closed-circuit TV, even the weather conditions. Please note that due to the limited bandwidth used by wireless cameras in one system can work a limited number of such cameras. Wireless systems are usually more expensive than the systems connected via cable (also taking into account the cost of cable)
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