The front-end acquisition part is mostly composed of one or more cameras, infrared lights, sound acquisition equipment, protective cover, etc., mainly to collect picture, sound, alarm information and status information. After the camera records the picture, it is transmitted to the video monitoring system, and can realize the zoom in, zoom out and zoom control of the lens. As an important equipment to control the lens and PTZ, the decoder can control the movement of the lens through the computer at the monitoring station.
The transmission process in the video security monitoring system refers to the transmission of control instructions and status information by using optical fiber, twisted pair and wireless network. The transmission part is divided into digital signal and analog signal according to different types of transmission. The cost and transmission performance of the two signal systems are different. You can choose and combine them according to your own needs.
The control part is the most important part of the video monitoring system. It can control the display switching of video and audio signals, the allocation of resources of the whole system, the push and pull of lens, control PTZ, switch various communication interfaces, control monitor, supporting power supply and other equipment. In the modern new digital system, the security monitoring system is combined with the latest computer technology, and the control part has more powerful functions. It can set management authority, control area, control network, bandwidth control, etc., becoming a more powerful security system.
The display part is mainly responsible for outputting the obtained video and audio signals in the terminal equipment. Terminal display devices have been updated in several times, from the earliest monitors and LCD monitors to projectors and now LCD splicing screens.
97506075
Wechat QR code
