Elements of a video surveillance system
Posted in Home Security on February 10th, 2006The video surveillance system is used both at home and in commercial establishments to monitor movement of people. Also known as closed circuit TV (CCTV) it is used to monitor pathways and insecure areas around homes to prevent break ins and intrusions.
A video surveillance system is made up of the following:
Monitors: They are used to display video information processed by strategically placed cameras in and around the house. These monitors have better video resolution than the standard television receivers The resolution of a black-and-white CCTV monitor ranges from 700-1000 lines whereas the colored monitors have a resolution of 350-400 lines.
Cameras: They are placed at strategic locations to monitor the movement of unknown or suspicious persons. They beam this information to the monitors.
Coaxial cabling: It is used to transport video information from the cameras to the monitors.
Switchers: They are used to hook two or more cameras to a monitor. Advanced switchers provide facility to hook alarm inputs so that the corresponding camera is targeted and locked when the alarm is activated.
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