The Development Course of Video Surveillance Technology

Video surveillance technology can be divided into three stages according to the development process of equipment: analog video surveillance, digital video surveillance and intelligent video surveillance. The first generation of video surveillance system, also known as CCTV (Closed Circuit Television), came into being in 1970s.

Equipment composition of analog monitoring system

Video acquisition equipment: mainly includes camera, lens, shell, bracket, decoder and video distributor.

Signal transmission equipment: mainly includes various cables and connectors, signal transceivers and signal amplifiers.

Switch control equipment: mainly composed of matrix, control code generator, keyboard and man-machine interface.

Display and recording equipment: mainly includes multi-screen processor, multi-screen splitter, monitor and video recorder. The iconic product of the digital video surveillance era is the hard disk video recorder (DVR), which came into being in the 1990s.

DVR concept

Digital video recorder or digital hard disk video recorder, we are used to calling it hard disk video recorder. Hard disk video recorder is a computer system for image storage and processing, which has the functions of long-term video recording, audio recording, remote monitoring and control of images/sounds, etc. DVR integrates five functions, such as video recorder, picture splitter, pan-tilt lens control, alarm control and network transmission. One device can replace many functions of analog monitoring system.

Main features of hard disk video recorder (DVR)

1, long video recording time.

2. A large number of audio and video channels are supported.

3. The video quality will not deteriorate with time.

4, more powerful application software support.

5. The networking ability is strong, and the large-scale system composed of multiple video recorders has been widely used and developed in recent years. The system is mainly composed of intelligent video analysis server and intelligent monitoring management host.

Main equipment

1, intelligent video analysis server: JIVA, the intelligent analysis core machine, runs intelligent analysis software to complete the intelligent analysis of the specified video and provide intelligent alarm information to JIVM. It originated from computer vision, which can establish the mapping relationship between images and image descriptions, so that computers can understand the content of images through image processing and analysis. Its essence is "automatically analyzing and extracting key information from video sources".

2. Intelligent monitoring management host: the main control machine JIVM runs the intelligent monitoring platform to complete the management of equipment and alarm information in the intelligent monitoring system. The main functions are resource management, media distribution, storage management, alarm service and user service.