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CCTV monitoring system is a cross-industry comprehensive security system that uses the world's most advanced sensing technology, surveillance camera technology, communications technology and computer technology to form a multi-functional all-round monitoring of high intelligence processing system. Closed-circuit television monitoring system has become the main method in the field of security and prevention because it can give people the most direct visual and auditory experience, as well as the visibility of the objects being monitored, real-time and objectivity. It has been widely used and applied. .
A complete closed-circuit television monitoring system is mainly composed of front-end audio and video data acquisition equipment, transmission media, terminal monitoring and monitoring equipment and control equipment. By installing a fixed camera or omnidirectional camera in the monitoring area, the monitoring area is monitored in real time. The signal collected by the camera is transmitted to the image distributor or amplifier through the transmission line, and then passed to the monitor, so as to realize the comprehensive monitoring of the monitoring area.
Front-end equipment: refers to the device that collects audio and video information at the front end of the system. The operator acquires necessary information such as sounds, images, and alarms through the front-end device. The front-end equipment of the system mainly includes cameras, lenses, heads, decoding controllers, and alarm detectors.
Transmission medium: It is the transmission channel that transmits the information collected by the front-end device to the control device and the terminal device. Mainly includes video lines, power lines and signal lines. Generally speaking, video signals are transmitted using coaxial video cables. Fibers, microwaves, and twisted-pair cables can also be used for transmission. control
Equipment: It is the most important part of the entire system. It plays a role in coordinating the operation of the entire system. It is through control devices that people get the monitoring functions they need. Meet the needs of different monitoring purposes. The control equipment mainly includes audio and video matrix switching controllers, control keyboards, alarm controllers and operation consoles.
Terminal equipment: It is the equipment that the system integrates the acquired sounds, images, alarms and other information and displays them in various ways. It is through the display of the terminal equipment that the system provides people with the most direct visual and auditory experience, as well as the records of the visibility, real-time and objectivity provided by the monitored object. System terminal equipment mainly includes monitors, video recorders and so on.
CCTV monitoring system is the application of optical fiber, coaxial cable, microwave transmission of television signals in its closed loop, and constitute an independent and complete television system from the camera to the image display. It can reflect the monitored objects in real time, vividly and truly. It not only greatly prolongs the viewing distance of the human eye, but also expands the capabilities of the human eye. It can replace humans for long time monitoring in harsh environments and people can see. Everything that actually happened at the monitored site was recorded by video.
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