The working principle and application of video surveillance system
In our daily life, we basically can't do without the video surveillance system. Whether you go to the hospital, go to the bank, or even go to the supermarket to see the video surveillance system everywhere, then do you know how the video surveillance system works? What is it, the following small series should be briefly introduced for everyone, first introduce the definition of the video surveillance system.
Definition of video surveillance system
The monitoring system consists of 5 parts: camera, transmission, control, display, and record registration. The camera transmits the video image to the control host through the coaxial video cable, and the control host distributes the video signal to each monitor and video recording device, and simultaneously records the voice signal to be transmitted into the video recorder. By controlling the host, the operator can issue commands to control the up, down, left, and right movements of the pan/tilt and focus the zoom on the lens, and can realize the multi-channel camera and the pan/tilt through the control host. Switch between. With special recording processing mode, images can be recorded, played back, processed, etc., so that the recording effect is optimal. The video surveillance system has multi-screen monitoring effects and a specific video wall display mode. This is the definition of the video surveillance system. Here is the working principle of the video surveillance system.
How video surveillance systems work
Monitoring is the physical basis for real-time monitoring of key departments or important places in various industries. The management department can obtain effective data, image or sound information, and timely monitor and remember the process of sudden abnormal events to provide efficient, Timely command and height, layout of police forces, handling of cases, etc. With the rapid development and promotion of current computer applications, a powerful digital wave has emerged around the world, and the digitization of various devices has become the primary goal of security protection. The performance characteristics of digital monitoring alarm are: real-time display of monitoring screen, single-channel adjustment of video image quality, each recording speed can be set separately, fast retrieval, multiple recording mode setting functions, automatic backup, pan/tilt/lens control function , network transmission, etc.
Add a time generator to overlay the time display into the image. Add audio and video amplifiers when the line is long to ensure the quality of audio and video monitoring. Scope of application - banks, securities business premises, enterprises and institutions, institutions, internal and external environments of commercial premises, building passages, parking lots, internal and external environments of high-end community homes, libraries, hospitals, parks.
Product interface
The system innovatively realizes the integration of video surveillance and conference, thus achieving the dual functions of monitoring and communication, and fully meets the requirements of remote monitoring and emergency command in various fields such as transportation, water conservancy, oil field, banking, and telecommunications.
Scope of application: Suitable for real estate, construction, factory, warehouse, logistics, chain stores, store monitoring and kindergarten parent-child online
Maximum feature
The system innovatively realizes the integration of video surveillance and conference, and can flexibly and effectively manage remote devices. Through the application of remote monitoring object recording, playback, linkage alarm, monitoring strategy formulation, emergency command, etc., the dual functions of monitoring and communication are achieved.
Its biggest feature is to support the viewing of video images from mobile terminals such as smartphones/tablets, and support the transfer of monitoring images into video conferences for emergency command and remote scheduling.
Component equipment
Video surveillance system products include optical transceivers, optical cable terminal boxes, PTZ, PTZ decoders, video matrix, DVR, surveillance cameras, lenses, and brackets. The components of the video surveillance system include the monitoring front end, the management center, the monitoring center, the PC client, and the wireless bridge. The description of each component is as follows:
(1) Monitoring front end: used to collect monitoring information of monitored points, and can be equipped with alarm equipment. 1 ordinary camera + video server. A normal camera can be either an analog camera or a digital camera. The original video signal is transmitted to the video server, encoded by the video server, and transmitted to other devices through the network by TCP/IP protocol.
2 webcam. The webcam is an advanced camera device that integrates camera, video encoding and web services, and has a built-in TCP/IP protocol stack. You can connect directly to the network.
(2) Management Center: It undertakes the management, control, alarm processing, video recording, video playback, user management and other work of all front-end equipment. Each part of the function is performed by a dedicated server.
(3) Monitoring Center: It is used to centrally monitor the area under its jurisdiction, including video wall and monitoring client terminal group. There can be one or more monitoring centers in the system.
(4) PC client: In addition to the monitoring center, the PC can also be connected to the network for remote monitoring.
(5) Wireless bridge: The wireless bridge is used to access the wireless data network and access the Internet. Through the wireless bridge, the monitoring information of the IP network can be transmitted to the wireless terminal, or the control command of the wireless terminal can be transmitted to the video monitoring management system of the IP network. A commonly used wireless network is a CDMA network.
Summary: In such a high-tech developed society, the video surveillance system is very necessary and necessary. It is for the safety of others and for our own security. The above is the video surveillance system definition introduced by Xiaobian. Working principle, I hope everyone can learn more about it.
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