(Application field: network * classification range: monitoring alarm * classification code: * text code: * application case:
Details:
1、 Overview * with the rapid development of science and technology, especially the continuous development and progress of computers and communication means, high-tech means have gone deep into various fields: industrial control automation, office automation, building automation, intelligent buildings, etc. have blossomed everywhere, digital technology has penetrated into every corner of social life, and traditional analog monitoring has been gradually replaced by digital network monitoring, It has achieved a revolutionary leap from analog to digital* In order to create a civilized school with modern security precautions, create a safe, civilized and orderly teaching environment, so as to ensure the safety of teachers, students and school property, our company has designed a set of digital network monitoring system. The system adopts the most advanced all digital monitoring technology - wv600 series camerserver of Songchuan company. It is a webserver, and the images from the camera are picked up and compressed in real time, Then, the images of monitoring points are transmitted in real time through the school LAN and monitored through the general browser to realize digital network remote video monitoring. At the same time, wv600 also has the current popular DVR function to realize the local video recording of monitoring images through the DVR function. The dynamic video images are directly stored on the hard disk of the equipment, which is different from the traditional video tape method. It is more convenient and effective to use and maintain* II Design basis * general technical conditions for intrusion detectors gb10408.1-89 * industrial standards for public security of the people's Republic of China ga/t70-94*ga/t74-94*ga/t75-94* cable distribution system for 30mhz-1ghz sound and television signals *gb6510-86* code for electrical design of civil buildings jgj-t16-92* technical code for cable television system engineering gb50200-94* technical code for civil closed circuit television monitoring system engineering *Gb50198-94* safety engineering procedures and requirements ga/t75-94* code for design of communication grounding in industrial enterprises gbj779-85 * III. design idea * in the system design, a star topology network connecting all monitoring points is established in accordance with the design principles of user first, openness, progressiveness, reliability, practicality and scalability, and the guiding ideology of networking and digitalization combined with the actual situation of the school, The wv600 digital monitoring equipment connected to the network can collect the video and alarm information of the monitoring points in real time, and realize the real-time transmission of images, alarm signals and voice on the campus network. Any user on the network, including the president's office, the general affairs chief office, the leaders of the security office or the leaders' dormitories, can directly view the real-time images of the monitoring points of the school from the desktop computer, and monitor the monitoring points with the help of the computer on the network, The system completely adopts the advanced distributed monitoring mode, which is different from the traditional centralized control mode of analog monitoring. It is even connected to the Internet. Even if the principal is not at school or at home, he can remotely monitor all the conditions of the school, and truly achieve the function of "thousands of miles"* 4、 System composition * the monitoring system is divided into four parts: front-end analog monitoring equipment, digital video system, terminal display equipment and network* Front end equipment * mainly includes camera, PTZ, decoder, protective cover and other equipment to realize image information collection. Through PTZ and decoder, all-round control of camera, lens and aperture control are realized* The main equipment of digital system * is wv600 series products, which are connected to the network through video cable. Wv600 digitizes the image captured by the camera, compresses the image, and then transmits it remotely through the network* For terminal display equipment *tv or computer, local users can use the remote control to monitor on the TV, and can also use the browser on the LAN to monitor the network and control the camera without installing any software. Remote users can access the Internet through the telephone line to view their authorized image information* The network part * supports 10/100mbps Ethernet or switched Ethernet, and supports tcp/ip and HTTP protocols* For large systems with multiple wv600, netrecorder (fornt/2000/linux) network recording and playback management software can be used to manage up to 100 wv600 at the same time. Wv600 adopts embedded structure* 5、 Equipment configuration description* ××× The main key prevention areas monitored by the vocational and technical college are the main entrances and exits of the main teaching building, administrative building, school gate and other buildings. At the same time, the office area, walkway and control center on each floor are monitored and fortified in an all-round way. According to the above user requirements, in the selection process of the monitoring system, we fully consider that the selected equipment should not only ensure the safety and daily work management needs of the school, but also ensure the long-term stable and normal work under various school monitoring environments, eliminate the adverse effects of internal and external interference signals, have sufficient overload protection capacity, and be easy to manage, detect and maintain, It has the characteristics of progressiveness technology, and the equipment components comply with standardization* In the design process, the basic starting points for equipment selection are as follows: * (1) the investment status of the investor in the real-time monitoring system* (2) The functions that the system can achieve and the convenience of maintenance, repair and upgrade after completion* (3) The ability of system operators to master, realize and bear the system* Therefore, the equipment configuration of the monitoring and alarm system is as follows: *1. Color cameras and wide-angle lenses: * are mainly installed in: the hall on the first floor, the stairwell on the first floor, the stairwell on the second floor, the stairwell on the second floor, the stairwell on the second floor, the stairwell on the third floor, the stairwell on the third floor, the stairwell on the third floor, the stairwell on the fourth floor, and the stairwell on the fourth floor. Main functions: responsible for real-time image monitoring of all entrances to the building* 2. Infrared / microwave dual detector: * it is mainly installed in the hall on the first floor, the stairway on the first floor, the stairway on the second floor, the stairway on the second floor, the stairway on the third floor, the stairway on the third floor, the stairway on the third floor, the stairway on the fourth floor, and the stairway on the fourth floor. Main functions: cooperate with the image monitoring of each monitoring point, trigger the alarm, and improve the safety factor of each monitoring point* 3. Linkage light: * each monitoring point is configured with one. When the alarm is triggered, the linkage light is turned on* 4. The system adopts wv600 digital network monitoring equipment, which has the dual functions of network real-time transmission of dynamic images and local digital video (DVR), and has the functions of alarm layout, alarm linkage, time and date superposition. Through the campus network, any user on the network can monitor each monitoring point anytime and anywhere* 6、 Description of main equipment *6.1 color camera: * model: wv600 － 460f* origin: pananic (Songchuan) * performance and features: * ● 1/3& quot; The color 480TV line 0.5lux12dcv* ● has an output socket that directly drives the aperture lens, so that the low-cost automatic aperture lens without amplifier can be selected* ● with automatic gain control, the best sensitivity can be obtained under low illumination* ● electronic aperture, so that both manual and fixed aperture lenses can get the best exposure under certain illumination conditions* ● background light compensation, which can improve the details of the visible scene* ● line locking and phase adjustment to synchronize the cameras in the multi picture processor or matrix system to avoid picture scrolling* ● background light compensation, white balance adjustment, automatic gain control (AGC), electronic aperture, synchronization, line locking - phase adjustment, shutter speed, etc. can be selected on/off (used or not) by dip switch* 6.2 lens: * model: ssg0284* origin: Seiko Japan * product performance: 1/3& quot; 2.8mmf1.4-64 automatic aperture, CS interface *6.3wv600cameraserver:* product features: * ● built in webserver, no need to cooperate with other software and hardware * ● easy installation, plug and play * high cost efficiency, wide range of applications * ● hardware has self detection function, easy maintenance * ● images from the camera are picked up and compressed in real time, and then transmitted via the Internet Intranet or general telephone line transmission * ● transmit video images on the network (different from the general video network, which transmits video through coaxial cable) * ● it is not affected by the video network wiring and breaks the regional restrictions * ● the system setting is simple (it can be through httphomepage or rs-232terminal mode) * ● it supports three connection modes: dial-up Internet access, fixed Internet access or direct connection * ● the minimum bandwidth requirement is 6kbytes/seconds. Without bandwidth restrictions, 25 frames can be transmitted per second (PAL) * ● GIF files and HTML files can be uploaded as personalized and diversified web pages * ● H.263 low bandwidth compression method is supported, and the network bandwidth requirements are very small * ● the client only needs to use a general browser without adding special software and hardware * ● it can browse or capture real-time dynamic pictures anytime and anywhere, and can connect up to 4 black-and-white / color cameras V8 or video recorder * ● specially designed security software. In addition to providing password to restrict the permission to view images, it also provides regular callback to transmit images)
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