Software Supermarket chain monitoring

First, the classroom monitoring system plans

Second, the technical principle
With the development of broadband technology, remote monitoring on the needs of a growing number, size is also growing, is a reconstruction of private networks, use of the existing CATV technologies, including WDM technology, the analog signal will not directly deal with spread Monitoring Centre, centralized control, the drawback is the very high cost of building the network, using WDM technology, must be bare-brazing (intermediate is passive), and in some applications, in a small regional context, or feasible. Centralized Monitoring only achieve significant cost, high cost. Another way to use existing technology to digital networks, video and audio digital signal compression, compressed bit stream will be composed of IP packets through the TCP / IP protocol, to spread these IP Packet monitoring center real-time decoding the video images , centralized monitoring, this figure can be VPN network, it could be the network, it can also be a public networks, such as PSTN, ISDN, GPRS, CDMA, ADSL, broadband MAN, such as INTERNET.
PC management console through IP networks, each of the front of the network video server configuration, management, control, real-time monitoring network video server each video image. If the number of video images too much, too much the whole network, a management console can control a lot of front-end equipment-image through the PC and the display of video images, and adopted the rules on pre-switching image signal. If a switch 15 seconds to one minute to conduct a cycle of a PC to function at the same time decoding Road 16, a PC-64 can simultaneously monitor video images, two PC-128 can monitor video images, can be and so on.
The use of independent network video decoder can be a network video servers and digital video encoding the hard drive of the data D / A conversion, the final output to a TV wall, allows users to direct real-time monitoring to see clear images.

Third, functional modules that
Mainly to provide front-end modules provide real-time images of the site supervisor, the on-site real-time image recording and video information on demand, but also need to provide remote monitoring (the network) to control peripheral monitoring equipment.
Take into account image storage (decentralized), image quality, video compression performance (net to the low-flow code, that is, higher compression ratio), stability, security (virus) and the cost and other factors, taking into account the support of the achievement of good will centralized monitoring network to meet the necessary software applications modules (SDK development kit), we recommend using a sharp Shenzhen billion peacekeeping independent research company network video server equipment.
Master control operations management console is the main module, the equivalent analog video monitoring control Keyboard functions. Control the operating environment software modules:
n software environment: Windows2000Profesional or XP;
n hardware environment: CPU/P4, RAM256MB, HD/20GB more scalable graphics support.
Control software module features and functions are as follows:
n long-range here: friendly interface is simple to see more clearly the purpose. After authentication server management, combined manual free-on-demand, can be very intuitive, easy to read permissions permit real-time video (1/4/8/9/16 split screen, real-time video, grasping frame) or non-real-time video (fast / slow / Dizheng intervals).
n alarm information processing: When the scope of the licensing authority in front of equipment alarm, alarm information transmitted by the host police, the police will be able to accurately transmit information to the machine, along with voice and images (pop-up screen), the full text Auto tips, and the generator alarm log, according to the police suggested that equipment has been in effect, termination condition is the operator manual intervention or regular removal; over by the police when the police are after all priority queue.
n remote operation: the scope of the licensing authority for remote operation of front-end equipment, such as equipment parameters, the channel parameter settings, serial configuration parameters and alarm parameter settings, as well as remote control Haeundae shot.
n high security: all operations only under the authority of, we can operate.
4, System Design
Network video servers, network equipment (switches, routers, network connectivity equipment), network facilities, control centres, the network management centre as a whole, use of functional modules building blocks of the way to build digital Centralized Monitoring System.
Manage the design of strengthening "supervision", the unusual event can do real-time processing Show, and can be done in person at the scene as the command effect, the system