Summary: Introduced wireless the progress that sheds media monitoring technology, relevant technology and modern communication technology to carry video monitoring, wired network to cannot arrive at the application of the monitoring place such as the place in the car. Be based on supervisory system of our country automation to develop the current situation, the characteristic of net of the fixed position that the article adopts dug automation supervisory system, group, concrete step that advanced construction of automation supervisory system.
Develop as economic high speed, topological features of security of society is sophisticated with each passing day, case of of all kinds sudden incident, criminal, public security case and calamity accident happen from time to tome, it is important that large assembly is mixed guard the task very onerous. Chinese the Ministry of Public Security started urban couplet net formally to call the police to be built with supervisory system in September 2005 (3111 projects) , in countrywide limits introspection, city, county 3 class are begun call the police to be built with supervisory system, drive " restful city " construction pace. Each are at present main the city already began to accelerate supervisory system of construction city video like Beijing, Guangzhou, Shenzhen, Hangzhou. Shanghai public security bureau strengthens the configuration of wireless communication equipment that to patrolling patron wagon reachs fuzz, rely on have / wireless communication, image communication, GPS patrols, geographical information of automatic fixed position, GIS, computer assists car of carry bank note decision-making system and computer network platform, linkage of the lash-up reaction that promotes direct the center further, society, direct attempers and assist decision-making ability.
1, wireless shed overview of media monitoring technology
Wireless shed monitoring of media network multimedia to run platform market wireless communication, shed network of processing of media, video, computer and automation technology at a suit, it is the solution of video, frequency, data and graphic representation unifinication. Have both the function such as living broadcast of conference of network video monitoring, video, video, have exceed capacity of wholesale group net, technical safeguard was provided in the application of public security industry for wireless supervisory system, provide good preparation for all sorts of sudden incident and lash-up incident, make the car carries tool of monitoring, public traffic (bus, subway, long-distance car) the monitoring with the greater difficulty such as monitoring becomes a possibility. Wireless network, shed media business to basically face GPRS/EDGE, CDMA, 3G to wait offer taller bandwidth (100kbit/s above) wireless in group network. The addition of bandwidth of the interface in 3G network sky is those who shed media business to begin provide good basis, combine wireless system not to suffer the characteristic that time, place restricts, dislodge sheds media business to have appeal more. Video coder and suit oneself high-powered shed media server equipment to make image definition achieves FullD1 (DVD) the effect, real time sex is good, convenient use, can have long-range monitoring and long-range government through Web means directly, offer map of agile monitoring picture choice, electron to use for the user, make full use of firewall / VPN, add close, attributive management, safe attestation, the technology such as real time clock, assure supervisory system and kinescope data to use and be not destroyed by exceed one's authority.
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