With the popularization and deepening of China's modern enterprise system, the informatization construction of enterprises has continued to deepen. Enterprises, especially large and medium-sized enterprises, have accelerated the construction of information network platforms; enterprises are gradually turning to the use of networks and computers for centralized management and production. A large amount of data on important links such as sales, logistics, and after-sales service.
Digital video is an important part of enterprise visual information management system because of its intuitiveness and easy to store, retrieve and share. The enterprise visual information management system is a video data management system based on the network platform for enterprise security and production management. It is the extension and expansion of the traditional video surveillance system. The upgrade and progress in communication means is the future industry. The development direction of television and closed circuit television systems. It is different from the conventional enterprise information (MIS) system, and it is inextricably linked with the MIS system. They all have different emphasis and form the information means of enterprise modern management.
The application and popularization of computer systems, the rapid development of network communication technology and image compression processing technology and transmission technology enable the security technology prevention industry to adopt the latest computer, communication and image processing technologies to transmit digital images through computer networks. Enterprise remote image monitoring and networked alarm systems provide an efficient, cost-effective solution.
In order to meet the security needs of the public security environment monitoring and management monitoring in the plant area, according to the principle of “combination of civil air defense, technical defense and physical defense†and the design philosophy of “strict, reasonable, reliable, economical and perfectâ€, the monitoring is safe and effective. The management is in place in a timely manner. Under the limited police resources, the efficiency of the police is improved, the police force is properly allocated, and the crime of public security is eliminated in the bud and the party is guaranteed to be safe. Tianshitong Technology and xxx jointly developed a “long-range wireless video surveillance system†designed for the region, and established a factory video surveillance and monitoring system based on digital wireless video surveillance to improve the efficiency of the factory security and management system. contribution.
Second, the design purpose and system characteristics:
Wireless video surveillance: Only use the most mature 802.11B wireless technology to solve the difficulty of attaching cables.
Hotspot coverage: As a camera, complete the transmission of wireless video, and provide access nodes to allow other devices to access.
Distributed image processing architecture remote monitoring system: The front-end equipment of the system independently completes image acquisition, video compression and transmission, and forms a distributed structure of image processing in the whole system.
Open Network and Scalability: With a distributed image processing architecture, each front-end device acts as a network node independent of centralized control points, based on aggregation rather than layering principles. This way, you can add front-end devices where you need to add or reduce watchpoints for phase-by-phase expansion. And in highly distributed monitoring points, all front-end devices are managed across multiple devices.
Unlimited extension of your vision: The system uses the most economical image transmission means to achieve real-time remote video surveillance, allowing all relevant staff to remotely monitor any monitoring point in real-time via computer and internet. Everyone can remotely monitor the situation of the viewpoint.
Remote centralized monitoring: The remote video of the substation with the device is all concentrated in the dispatch center. Especially when the screen changes (intrusion, equipment sparks, etc.), the dynamic detection video is automatically concentrated to the dispatch center.
General protection: Realize the functions of traditional video surveillance systems (anti-theft, fire monitoring, management monitoring, environmental monitoring).
Third, the remote video surveillance system structure
It includes three main parts: front-end video design, transmission network, image display and video recording equipment:
1. Front-end video equipment: including video source, digital encoding equipment, transmission interface, distributed independent operation, independent image acquisition, video compression and remote wireless transmission.
2. Transmission network: including ADSL, broadband, leased line, WIFI access to Internet devices, LAN cable (wired and wireless) and network equipment.
3. Image display and recording equipment: mainly adopts the architecture of PC, according to the number of image display and video recording, and install relevant software according to actual needs. Fourth, network camera distribution and transmission network:
Front-end video equipment: 6-inch outdoor high-speed MPEG4 intelligent high-speed network ball machine TS805WA
Front-end video equipment: Enhanced MPEG4 CCD wireless network camera TS804WA
Analysis of the transmission network: The code stream of the front-end video equipment selected in this scheme can be set to 300K~400K. It is necessary to set the code stream of each device according to the network status to achieve the best image effect. Therefore, it is necessary to comprehensively calculate each network. The bandwidth of the node analyzes the bottleneck of the entire network.
Analysis of the network structure of the whole station:
In order to ensure that the high-quality signals of the 20 microwave network cameras are transmitted to the security center, the microwave wireless cameras are transmitted through two sets of WLANs, so that all the bottlenecks of the network transmission of the remote video monitoring solution can be solved. The average code stream that can be set in this project is 200K, so that the best effect setting can be achieved. The 200K code stream calculation of each front-end video device, according to the following formula, the total required bandwidth of 20 front-end devices is 4M+, so The monitoring center must divide 20 cameras into 2 zones, each zone is no more than 15 cameras, and use one server (PC) to monitor the transmission network equipment: this solution can fully utilize the existing network equipment, including the network. Switch and network cable, as long as the front-end video device is installed with an Ethernet interface (network cable), if the Ethernet interface is not enough, add the switch and network cable on the original network. Image display and recording equipment hardware configuration: According to the previous analysis, the program tries to use the equipment that is shipped or existing.
Security surveillance image display device and recording hardware configuration requirements
1. Central Processing Unit (CPU): Intel P4 2.4GHz or above.
2. Main memory: 512MB (inclusive) or more.
3. Built-in 160 GB (including) hard disk & TImes; 2, keyboard, mouse.
4. Operating system: Windows XP Professional Professional Chinese operating system.
5. Install the TOPSEE Player client software (version 1.0).
6. Display 17-inch (inclusive) or more color liquid crystal display or CRT display, resolution 1024x768 (inclusive) or more.
7. Simultaneous display of 16 screens, the highest image configuration of the front-end camera (resolution 352x244, 25 frames/sec)
8. Realize (7*24 hours video recording) Hard disk minimum capacity: 7 days & TImes; 10 channels & TImes; 24 hours & TImes; 0.18G = 302.4G
Factory related personnel image display equipment hardware configuration (completely using the office PC to achieve):
1. Central Processing Unit (CPU): Intel P4 1.6GHz or above.
2. Main memory: 512MB (inclusive) or more.
3. Built-in 80 GB (including) hard disk × 1, keyboard, mouse.
4. Operating system: Windows XP Professional Professional Chinese operating system.
5. Install the TOPSEE Player client software (version 1.0).
6. Display 17-inch (inclusive) or more color liquid crystal display or CRT display, resolution 1024x768 (inclusive) or more.
7. Simultaneous display of 16 screens, the highest image configuration of the front-end camera device (resolution 352x244, 25 frames / sec).
V. System design basis and specifications:System planning and design must be carried out in accordance with relevant international and national standards and specifications. In addition, the overall structure of the system and the various subsystems must be structured and standardized and represent the latest technological achievements today.
This design will be based on and reference to the following design specifications and requirements:
"People's Republic of China Public Safety Industry Standards" GA/T75-94.
"Design Code for Safety and Prevention Engineering of Bank Business Places" GB/T16676-1996.
"Technical Requirements for Centralized Monitoring System for Communication Power Supply and Air Conditioning", former Ministry of Posts and Telecommunications YDN 023-1996
"Communication Bureau (Station) Power, Air Conditioning and Environmental Centralized Monitoring and Management System Front-end Intelligent Device Communication Protocol" (March 1999)
"Interim Provisions on Engineering Design of Communication Power Centralized Monitoring System" (YD5027-96), former Ministry of Posts and Telecommunications
"Intelligent Building Design Standards" (GB/T50314-2000)
Code for Electrical Design of Civil Buildings (JGJ/T 16-1992)
"Code for Design of Integrated Wiring Systems for Buildings and Buildings" (GB/T50311-2000)
Code for Acceptance of Construction and Building Group Integrated Cabling System Engineering (GB/T50312-2000)
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