The development of the security industry for decades, regardless of the development of technology or the needs of the market, has increasingly tended to the development of the industry, industry solutions! No matter from the front-end, transmission equipment, or back-end centralized management, and decoding on the large screen or video wall, there have been certain technological changes, but from analog cameras, to network cameras, to smart cameras, intermediate transmission The equipment ranges from ordinary video cable, network cable, optical fiber, wireless, back-end analog matrix, video splitter, splitter, upper monitor, to decoding card plus platform software, upper display, to the current network digital matrix set storage, Remote switching, remote management is equivalent to one, decoding on the TV wall, or large-screen display for multi-screen output, multi-screen split display, truly let peers enter an era of network monitoring, and then look at the slow fever of 3G monitoring.
1) Demand analysis:
The design requirements include video surveillance and anti-theft alarm system;
The camera is divided into two types: fixed installation and control with PTZ, and two devices with uniform speed and high speed dome with PTZ control;
The control room requires that all camera images can be monitored simultaneously;
The control room is designed with a TV wall function, which can display any camera image on the TV wall monitor through matrix switching;
You can set and make a schedule for the recording work plan. Multiple video retrieval methods are required.
The system can store the image data of all cameras through the hard disk recorder, and the video data is automatically saved;
You can control the various actions of the gimbal and the lens at the same time through the matrix master keyboard and hard disk recorder (including up and down, left and right, lens zoom, distance control, and high-speed ball speed control and pre-position control);
Important video data can be backed up and archived;
DVRs have user rights management functions, and users of different levels have different rights of use.
The alarm system can arm and disarm regularly;
Support electronic map function, when a certain probe probe alarm, it is required to display the location of the alarm point in the electronic map.
The alarm system is linked with the video recording system. When a certain alarm probe alarms, the monitoring center requires instant sound and light alarm, and can automatically turn on the front spotlight or other lighting system;
2) System block diagram:
3) System function:
This monitoring system consists of front-end equipment (cameras, lenses, PTZ, protective cover, brackets, decoders, alarm probes, spot lights, etc.) and central control equipment (hard disk recorder, matrix host, monitor, alarm box, video distributor, etc. ) Composition; central control equipment is divided into hard disk video recording system, matrix control system, and alarm system according to function. The following is a brief introduction according to the function of each module:
â‘ Main functions of hard disk video recording system
At present, a digital hard disk recorder supports up to 32 video inputs;
Local monitoring, recording and playback;
Support multiple screen split display, single-screen round-robin display; video support multiple recording methods such as mobile sensing video, conventional video, alarm video, etc .; support multi-screen simultaneous playback in both LAN and WAN;
Recording data storage time can be set according to user needs (the conventional calculation basis of the amount of recording data: 150M / hour / way);
The clock and camera title can be superimposed on the video window.
PTZ lens control (including high-speed ball control, support variable speed control and pre-position control);
Optional special alarm decoder, at the same time can connect infrared, smoke and other alarm detectors as alarm input device;
The hard disk video recorder has an electronic map function. The user can draw an electronic map and set an alarm point according to the actual situation. After the alarm, the electronic map automatically pops up and displays the alarm location;
Users can set up multi-level user password login, different operators can enjoy different permissions to avoid illegal operations.
Video data backup; backup video data can be played on any machine through stand-alone playback software.
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