First, the requirements analysis

With the development of economy, the chain on a large scale in the national economic development. In the economic development of faster, higher per capita income level, chain have become the main place, the consumer daily shopping traditional consumption habits started to change. Chain management fresh ability enhancement, chain network convenience and centralized purchasing price advantage, make the chain more attractive than a traditional store, chain enterprises in the status of large and medium-sized city commodity circulation also improved significantly.

Chain operation mode has the following features:

1, a center, multiple remote chain, each chain distribution in different areas

2, each basic chain operation for a long time, and passenger flow has a certain randomness

3, chains, and can use the Internet in real time communication between head office

4, each chain, there is no specific system administrator for the application system for maintenance

5, a lot of chain stores are open 24 hours a day, the shop assistant and property of high demand for monitoring

According to the characteristics of the industry chain, monitoring and control system in the field of application must meet the following requirements:

Planning applications:

1, can be distributed in the center of the headquarters to monitor centralized management, system configuration, site monitor and alarm response, etc.), chain distribution in primary storage (data storage, local monitor, etc.).

2, give priority to with video monitor with alarm management.

3, the video data can be adaptive bandwidth, relieve pressure on limited network resources.

4, the embedded system should be used in the front-end equipment, minimize maintenance, system should be a free maintenance of the system.

5, system must have good scalability, in order to meet the needs of the growing chain.

Second, the introduction of system

Chain, the core equipment of remote monitoring system USES: network video server and network video monitoring system software. Around the former installed in chain, mainly perform the camera video image coding compressed into IP packets and upload network function; Which is installed in the headquarters (or chain stores local monitoring center) monitoring computer, mainly performed to restore data into video signals, and a series of control, video, management functions.

1, the system network structure

Covered chain remote monitoring system for remote viewing monitor there is no limit to the number of chain stores, mainly depending on the application environment of network conditions. So basically system according to the need to monitor chain number free combination definition, system can way multistage network at the same time, the formation of large-scale remote centralized monitoring network. At present the company a total of 20 July, along with the increase in joining chain, its expansion, it is very convenient. Chain headquarters of remote monitoring system is basically divided into the remote monitoring center, chain network structure of local monitoring center and front-end system. System equipped with one or more in each of the chain network video server (specific amount depending on the size of the population of the testing surveillance cameras), complete digital compression and coding of visual audio signal processing, packaged into IP packets on the IP network transmission; Based remote monitoring center monitoring host over the network channel, real-time image monitoring the chain, the chain of local at the same time also can be real-time monitoring.

2, system composition,

As mentioned earlier, according to the application of remote monitoring chain characteristics and management mode, this system basically divided into headquarters remote monitoring center, the chain local monitoring center and front-end system. Among them, the function of remote monitor center and local monitor center, mainly including host, display devices, video monitoring management information storage devices and network video monitoring system application software. Front end system including cameras and accessories, audio equipment, network video server, alarm equipment (optional), etc. Video, audio, alarm information, the network video server after compression, uploaded to the monitoring center through the network, complete the real-time monitoring, grasp the chain scenario. The monitoring center can implement the management of the chain monitoring equipment, alarm information query, image browse and control, and other functions.

Considering the characteristic of chain construction of monitoring system, this system has good scalability. Each function part adopts modular structure, very easy expansion, convenient, flexible configuration, network and has a good user interface.

Low in the system to add new test point, the test will only access networks and network video server in the center to do simple configuration;

Low is not affected by the expansion of the system functions and operation;

Low system has the capability of multistage network.

Part 1, the front-end monitoring

Chain monitoring front part of the installation of equipment at the scene of the chain stores, complete the various kinds of video, audio, alarm information collection, processing, upload, mainly can be divided into network video server, the monitoring and controlling of the peripheral equipment of two parts. Configuration of each part and the request is as follows:

The network video server is the core of the remote monitoring system equipment, the main features include:

Low to collect the testing field of video images and background sound,

After compression uploaded to the local tour to take an examination of the monitoring center and remote network center;

When necessary, through the network connection decoder, according to the monitoring center of operation command control video switching,

Control the lens focus, close shot/vision, aperture adjustment, yuntai, up and down or so control and automatic touring action;

According to the alarm message of alarm equipment, realize JingShi linkage video recording, warning lights, alarm control equipment such as automatic start, automatic with subtitles, hints of sound and light alarm. Achieve a certain area of anti-theft alarm function.

2, the monitoring center

The concept of the monitoring center including remote monitor center and local monitor center. Remote monitoring center management monitoring the chain in the form of rights management, the function of the remote monitoring center and the function of the local monitoring center are basically the same, so in the narrative in the local monitoring center, for example.

The basic function of the monitoring center is completed to reduce the local chain monitoring image real-time display, control, storage, management, and other functions, the hardware system is mainly composed of monitoring host, display devices, network interface and other components of the equipment, storage, printing equipment, its core is "network video monitoring system software.

Monitoring center monitoring host install Windows operating system and network video monitoring system software, and according to the need to equipped with large capacity hard disk or external storage devices, the host hardware requirements for more than 2 g P4 CPU, more than 512 MB of memory, with 64 m

Memory card of the computer. Monitoring host as the center of the monitoring system operation platform, is mainly responsible for receiving, storage, analysis and synthesis

Meter and query chain upload audio, alarm, data signal, at the same time perform powerful system management functions, including management

Users of the system and set user permissions, manage, and configure the system equipment, linkage alarm information processing, as a web service

Device management network users and network equipment, etc. And all this functions are based on network video monitoring system software as the core to implement

Third, network video monitoring system function

1, remote image transmission

2, the remote monitoring equipment

3, monitoring picture

4, round tour more picture

5, the priority control mechanism

6, videos and playback

6.1 planning video

6.2 alarm automatic video

6.3 manual video

6.4 the video playback

6.5 video management

6.6 manually capture function

6.7 remote alarm and linkage control

6.8 user management functions

6.9 the password protection function

6.10 electronic map function

7, system lock function

 8, hard disk space