监控设备描述（Monitoring device description）.docVIP

监控设备描述（Monitoring device description） Monitoring device description: TV monitoring system English abbreviation is: CCTV (closed-circuit television), closed-circuit television monitoring system is a cross sectoral comprehensive security system, the system uses the sensor technology, monitoring the worlds most advanced imaging technology, communication technology and computer technology, high intelligent processing system composed of a full range of multi-functional monitoring. Closed-circuit television monitoring system because it can give the most direct visual and auditory perception, and recording of the monitored object visibility, real-time and objectivity, so it has become the main means of current security field, has been widely applied. A complete CCTV monitoring system mainly consists of front-end audio and video data acquisition equipment, transmission medium, terminal monitoring, monitoring equipment and control equipment. The surveillance area is monitored in real time by installing a fixed camera or omnidirectional camera in the surveillance area. The signal collected by the camera is transmitted to the image distributor or amplifier through the transmission line, and then transmitted to the monitor to realize the overall monitoring of the monitoring area. Front end device: refers to the front of the system to collect what audio and video information equipment. The operator obtains the necessary sound, image, alarm and other information that needs to be monitored by the front-end equipment. The system front-end equipment mainly includes camera, lens, pan head, decoding controller, alarm detector and so on. Transmission medium: transmits the information which the front-end equipment collects to the control equipment and the terminal equipment transmission channel. Mainly including video lines, power lines and signal lines, in general, the video signal is transmitted by coaxial video cable, and also can be transmitted by optical fiber, microwave, twisted w