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  • Security monitoring techniques: level characteristics and common equipment installation

        Good security monitoring equipment mounting is an important guarantee safe operation of the machine, the entire monitoring security system, in the early stages of supplier selection, the program is scheduled board approved the implementation of bargaining, the product arrived installed in front of the process we occupy too much energy, basic post-installation are ignored, regardless of the process after the former looking like endless effort to buy back the front-end products carefully, in the final minor no good pass, which will reduce the service life, can not achieve the desired results, always complain about the camera manufacturers of quality problems, do not attach importance to the maintenance of the late protection matters, dumbfounding.
         Security monitoring industry technical level features
         From a technical point of view, the development of video surveillance system is divided into first-generation analog standard-definition video surveillance systems (CCTV), to the second generation in the core of the DVR digital video surveillance system, the third generation full network-based IP video monitoring system .
         The first generation of video surveillance is a traditional analog CCTV video surveillance systems (CCTV), rely on cameras, cables, video recorders and monitors, and other special equipment, the presence of a large number of analog CCTV limitations; second-generation video surveillance DVR is at the core of digital video surveillance systems, digital video surveillance system is the core of the DVR video surveillance solutions, from camera to the DVR still using coaxial cable output video signal recording and playback support through the hard disk recorders, and supports a limited network access; the third generation is the future of video surveillance network based entirely on IP video monitoring systems, IP camera and built-in network transmission module provides Ethernet port directly access from anywhere in the network, monitoring, record.
         Currently the video surveillance market is moving from analog to digital, high-definition, networked, intelligent transition, digital video surveillance system has become the mainstream market.
         (1) Digital
         Digitization process security video surveillance products has already begun in the 20th century, mainly as an analog tape recorder is replaced DVR. With the associated video capture, processing, analysis, transmission and display technologies mature, the market share of the analog SD cameras will also be replaced to reduce the full digital security IP camera HD cameras and coaxial. Coaxial-based HD camcorder HD SDI camera, refers to a coaxial transmission via uncompressed HD digital video cameras in real time, with no delay, lossless uncompressed image, follow the existing analog surveillance systems, etc.; IP camera compared to analog cameras then have a higher image resolution and richer video surveillance capabilities through a variety of IP network to complete a full digital process technology security industry.
         (2) high definition
         HD is one of the most mainstream video surveillance industry trends, current, high-definition video surveillance are mainly based on two important development direction of HD and SDI-based network, such as coaxial HD. Compared with the standard definition, whether it is from the resolution, display or fluency, the HD than SD advantage. HD technology will provide more reliable and more efficient basis for intelligent video surveillance, improving functionality and efficiency monitoring system.
         (3) Network
         Structure of networked video surveillance systems means that the system will be lumped to distributed development. Structure of distributed systems using multi-layer hierarchical, so that the whole network of hardware and software resources, tasks, and the load can be shared. In a networked video surveillance system can be coded front acquisition, storage, display, analysis, transmission, management modules distributed in various nodes of the network, a variety of monitoring information can be transmitted along the distribution network and the user can view real-time. Network monitoring system, so that the monitoring more convenient access to information, installation, management and maintenance more flexible and convenient. IP surveillance camera is digital and network development outcomes, and a higher degree of network Network HD DVR will follow the process of promoting the network and the applications.
         (4) Intelligent
         With the rapid development of video surveillance, content and scope of the monitoring will be more extensive. The development will feature intelligent video surveillance systems mainly engaged after tracing prior warning and turned to the analysis of the main things in order to effectively improve the functionality and efficiency of video monitoring system itself. Intelligent video surveillance based on powerful data processing capability and video content analysis technology for video surveillance scenarios were analyzed to extract key information in the scene, and the formation of the corresponding event monitoring and early warning in order to improve the functionality and efficiency of the monitoring system.
         Four types of commonly used security equipment installation
         First, the installation of the monitor
         1, the installation of the monitor should be solid and stable, good ventilation.
         2, the installation location of the monitor screen should be made direct from external light, when there is the inevitable light, shading measures should be taken.
         3, each monitor adjustment knob should be exposed to in a position to facilitate the operation and increase the protective cover.
         Second, install the console
         1, the console´s entire body should be installed vertically stable platform, the equipment components in a rack inside the cabinet should be positioned and reinforced, equipment installation should be firm, correct.
         2, each fixing screws, washers, spring washers shall be required Rugged not missed.
         3, according to the corresponding location cabinets, consoles and other devices, setting cable ducts and cable entries, cable bend radius should be greater than 10 times the cable diameter.
         4, console or rack connectors and equipment access to reliable, firmly installed without distortion off phenomenon.
         5, the laying of cable ends remain appropriate margin and marked clearly and permanently marked to facilitate maintenance and management.
         6, the control room large security monitoring system should be laid antistatic floor.
         Third, the installation of the camera
         After l, prior to installation, you should have power to detect cameras and lenses work properly and adjust the focal length of the coarse and the camera and lens in normal working condition before installation.
         2, check the level of the head, the vertical angle of rotation, check the fastening and shield wiper action, check the head, bracket mounting dimensions.
         3, in the move, set up the camera in the process, do not open the lens cover.
         4, cameras, PTZ installation should be solid and stable. Power, video cable, control cable should be fixed, and the leeway to appropriate rotation does not affect the camera.
         5, after the initial installation is good, energized Look, for fine wind inspection functions, observe the image quality of the surveillance area, meet the requirements and then fixed.
         Fourth, the installation of alarm detector
         Installation l, alarm detector construction drawings should be selected locations, such as the installation site, or anti district obstructions (such as: ventilation pipes, industrial pipes, office furniture, etc.) should be properly exchange detector type (such as ceiling wall replacement exchange ceiling or wall). If the detector does not meet large deviation zone from the zone requirements, the design should be modified to increase the detector.
         2, the detector will be installed the detection zone range to meet the design requirements, such as the scope of the zone failed to meet the design requirements, should be appropriate to adjust the angle and direction of the detector, after adjustment failed to meet the design requirements, the design should be modified to adjust the type of or increase the detectors.