Based On The Ip Network Remote Video Surveillance System

With the development of the application of Internet, Picture code and stream media Evolves gradually, system handling ability largely promotion, the digital information technology becomes a leading technical method. benefited from these technological breakthroughs, network picture application is promoted gradually in the remote video surveillance system which based on the wide band technology.Because of the network picture service application expansion, the electronic monitoring not merely to limit to the safe guard, but becomes a kind of effective surveillance method in various trades and occupations. its application domain also already far exceeded the tradition which the monitoring defined.The network video surveillance service means providing the video, the audio and each kind of alarm long-distance gathering, the transmission, the storage, processing and a retransmission brand-new telecommunication increment service in the use wide band network foundation. Through this kind of service, the user may not limited by the time and the place. they can facilitate the real-time monitoring, the surveillance management and the video recording, also may monitor the place arrangement panalarm with to monitor the terminal device connection realization to report to the police the linkage. When some unusual situation happens, the system call the User by E-MAIL, mobile telephone which is established beforehand. and carries on the video recording and snapshot to the unusual situation. The video surveillance system is the hot spot in the domain of surveillance all the time. It is applied in each profession by intuitionistic, convenient, and rich information., for example: Transportation, electric power, correspondence, petroleum, wharf, warehouse, financial, governmental agency business department and core department, army, public security, jail, water conservancy /water works, commercial aviation.In this article first we introduced the development of network video surveillance system including history, background as well as the development tendency, then we introduced the Audio/video encoded international standard, and elaborated the Core technology of network video surveillance. Especially we discussed each kind of code technology, the network transmission technology and Stream media technology in the video surveillance domain. And realized the long-distance video frequency surveillance system in these foundation. This article studies the essential technology, innovation and does work as follows:1. Discussed the current international Audio/video encoded standard in detail, and analysed the new generation of object-oriented code standard MPEG-4 in storage space, picture clarity, network transmission, error correction ability .At last gives in the practical work to realize.2. Research the carrier of video surveillance system -network, and realized how to transmit thevideo data based on wide band IP technology . (1) this article designs the video surveillance system establishment above the existing network foundation, using IP over ATM technology IP over SDH technology and so on that are the current most advanced network transmission technology. (2) for in MCU and the customer unit, front end the video frequency server and in the MCU multi- spots communication application realized the high efficiency grouping correspondence to use the technology which the IP group broadcast to cause the information packet total quantity which in the network transmitted greatly to reduce.3. Realize how to support the web way monitoring in the central server, the user may watch the monitoring picture on ordinary PC through the IP network, supports the multi- pictures poll function. Thus the user does not need to install any software only to have to use the browser to visit the central server then.4. Realize centralized, divisional management to all users. User management include login management, searching users, adding users deleting users as well as the jurisdiction management and so on. We can fractionize the popedom changes into the system administration, the video frequency browsing the jurisdiction, controling the camera and so on, dividing into the users to the telecommunication manager, the telecommunication operator, the customer manager, the average consumer four kinds. uses the user level-to-level administration mechanism, according to user's different status, gives the different operation jurisdiction.5. Research how to support the distributional video recording, in the identical system may dispose many digital video recording server to cooperate. We also have provided the video recording server all services logic, including with the MCU correspondence, the distributional cascade management, recording and playing the task management, the video recorder status management, customer unit request processing and so on.6. Using embed encoder and center management server, which have high reliability, security, rich interface.they are also easy to expand.so it is easy to satisfy nobody defending.7. Realize how to ally a lot of center management server, which form the tree shape structure. thus the audio/video stream can be allowed the level-to-level administration. The high-level central management server is responsible to manage its sub- central management server. Thus it can provides the cross city, cross provincial area video surveillance service easily.8. Participate the design of the workshop monitoring solution, according to the enterprise's demand.the solution can coordinate the scene environment to realize the real-time monitoring workshop situation, including record and process the related data, detect the breakdown immediately, informs the administrative personnel.9. Participate the design of the municipal transportation system the solution, according to the municipal transportation's demand. The solution can make video surveillance system to monitor and contorl the running status of the transportation, means of transportation and the transportation environment,.so it guarantee the traffic safety and the path are unimpeded.This video surveillance system is the digitization, network supervisory system, this systemuses the MPEG-4 high efficiency encode/decode technology and embed technology.it can provide the high clear monitoring picture, software encode/decode, recording and playing back, long-distance control, long-distance signal capture, web service, entire journey common control. The system may use point-to-point encode/decode way to transport surveillance picture. It also may select the centralism monitoring method. The system has advanced function, high reliability, and high network adaptiveness, which is suitable to network monitoring and long-distance monitoring.