The first chapter an overview
1.1 the project background analysis
With the rapid development of economy, all walks of life for the security monitoring consciousness is higher and higher. But with the rapid development of modern science and technology can make people go out working environment for remote monitoring and video verification, to shelter around things are under control. Campus security is paid great attention by people gradually.
Social from all walks of life in today's modern management needs by means of advanced science and technology, electronic technology and computer control integration in a complete system, using the existing mature and advanced security monitoring equipment and system architecture, which can effectively strengthen on various occasions, special equipment and personnel management, intuitive timely reflect important location, area of the site situation, enhance security measures, further standardize the management of various industries. Current monitoring method has been developed from traditional analog video surveillance in network digital video monitoring, at present in the rapid development of network communication technology and network digital camera to the success of research and development has been for a new generation hd network digital video monitoring provides a good technical basis and operation platform. Use of the existing office network, the enterprise private network, optical fiber private network laying, and even the Internet and wireless networks are able to build a digital monitoring platform according to different needs. It provides users with more structure, multi-purpose, good scalability of the solution.
Campus security work for a long time just by civil air defense and simple technology to guarantee, but now more and more advanced theft invasion method, high strength of frequency, and even cruel crime will produce serious interference to the normal production order of the factory. So as the scene of safe guard system in video recording, forensics, the advantages of the previously identified, and its remote monitoring capabilities are is a strong deterrent to criminals, and after the forensics, effective investigation and a lot of help. So in our life built around video security system is urgently needed.
1.2 project demand analysis
Monitoring area: in order to the factory normal work and life order, avoid artificial or non-artificial damage to property, need to be safe and effective prevention, to plant the entrances and exits, accounting office, production workshop, outdoor public areas, parks and other locale video security monitoring system.
Local monitoring: the whole video can meet the all-weather 24-hour monitoring local monitoring requirements. Front end USES the most advanced the most stable hd digital camera as a front-end monitoring equipment. Can record video data, can set up multiple video methods, such as motion detecting video, you can scroll video playback, video data backup; Network camera for the integration of design, installation is simple, quick, can direct docking with the campus LAN.
Remote monitoring: in the complete plant of local monitoring and video at the same time, customers can also through the Internet, long distance, even the mobile phone in the office can view the video image factory related area.
1.3 project summary
This hd monitor projects for the factory security hd video monitor, the inward and outward in the factory, the main channel, production workshop, office, warehouse, perimeter fence, and other important places to install hd webcam; Entrances and exits, the factory main channel, wall surrounding outdoor place to install 720 p is low as hd gun webcams 24 hours monitor; Offices and other indoor places to install 720 p hd half spherical webcam; Production workshop and other indoor places to install 720 p normal hd webcam. In order to ensure the system is practical and advanced, this processing system adopts full digital video monitoring system. Front all the cameras via the factory internal LAN switches connected to the center, and to set up a special monitoring center control room, in the center installed 16 sets of 21 inch LCD TV wall, equipped with hd decoder for front-end high-definition video output signal decoding, display; Central control room to install four storage server, control server through a management center switches on the front hd webcam complete control, scheduling, cloud mirror control, digital matrix, electronic maps, alarm linkage, and other functions.
The second chapter system design
2.1 design principles
High reliability: the system of main equipment are chosen internationalization, specialization, large-scale production of high quality products. Its high technological level, quality assurance means perfect, stable performance, so as to lay a solid foundation for high reliability of the system. The surveillance industry the latest technology and high quality equipment. Considering the technology advancement and open at the same time, also should from the system structure, technical measures, equipment performance, system management, manufacturer's technical support and maintenance aspects, to ensure reliability and stability of the system operation.
Advanced: the equipment to ensure the leading technology, reliable performance, easy operation, practical, simple maintenance, optimal price performance ratio, and extend the leeway. Equipment adopts adopted the advanced technology and production process manufacturing. System design should not only adopt advanced design concept, technology, methods, and to pay attention to the maturity structure, equipment, not only can reflect today's technology level, and has the development potential.
Economy: under the premise that meet the requirements of security level, in ensuring that the system is stable and reliable, the performance good, on the basis of considering the system's advanced at the same time, on-demand systems and equipment choice, be reasonable, practical, reduce the cost, so as to achieve high cost performance, reduce the operation cost of safety management. The construction of the system should adhere to the principle of application oriented, pragmatic, combine practicability and economy. System equipment passes elaborate collocation, considering the quality of the optimal performance and price, both economic and practical, and minimize the system cost.
System integrity: the management system is a relatively complete set of integrated management system, the system design must consider the expensive unit focuses on other systems of comprehensive management, interactive integration and other factors.
The operation is simple and practical, using high-tech means, the intelligent design, reduce the complexity of system operation.
Development: the system should be in the preliminary design, think of the future good expansibility, to reduce the cost of future development, make the system has a good sustainable development, to be prepared for the second phase.
Appearance is beautiful: the front-end device to install all consider security, concealment and beautiful sex, according to the principle of practical and beautiful, front-end and back-end we chose appearance technology security products that are better and stable performance.
Open and standard: to satisfy the system of the technology and equipment used in the long-term effects of the collaborative operation ability, system investment to expanding into the system function demand, must be the pursuit of openness and the standard of the system.
Security and privacy: when in system design, considering both the full use of the information resources, more attention should be paid to the protection of the information and isolation, so the system should be separately according to different applications and different network communication environment, take different measures, including system security mechanism, data access permissions control etc.
Scalability and maintainability: in order to adapt to the requirement of system change, must fully consider the needs of the future system expansion, when the design should be flexible, and in the most simple method, the most suitable investment, realize the system expansion and maintenance.
2.2 design goal
According to actual, advancing with The Times, economy applicable, unified planning, resources sharing, save money, reduce cost, the security of the guiding ideology, at the same time of factory local correlation area monitoring, and can realize remote monitoring via the Internet, make full use of the computer, video monitoring, communication and other areas of the most advanced technology, realize the workshop internal and surrounding environment, personnel entering and leaving, suspicious behavior and other kinds of scientific and effective management and utilization of information resources, further the factory safety management work.
2.3 the overall design
System is divided into the front part design, the back-end network transmission design, the system adopts full network digital video monitoring architecture, using gigabit network transmission system, the architecture of the full guarantee fast smooth transmission of hd video, through the monitoring center in the factory configuration corresponding back-end server for centralized monitoring and management of network video. Overall design strictly follow the requirements of customers and industry standards, to meet user functional requirements, improve the prevention efficiency of management.
2.4 design front end point
Front end point in the design of video monitoring system layout is reasonable, and adoption of proper equipment is the key to the whole system. Therefore, in the design of the front-end monitoring equipment according to user requirements analysis are all made of network digital video camera. Through the demand analysis we know that the whole surveillance area according to the geographical location can be divided into internal production workshop entrances monitored and workshop area monitoring. In all key areas design about a total of 97 points. Relevant points respectively using common hd webcam or low illumination hd network camera for all-weather monitoring. Due to adopt the whole network digital architecture, so the front camera we choose progressive scan high-definition digital camera, through the high-definition digital camera can be monitored area high-resolution monitor and the details of the video. We chose to use the resolution of the camera at up to 720 p (1920 * 720 p / 30 FPS) full hd video real-time video. Minimum illumination 0.8 LUX, 0.1 LUX, entrances and exits, workshop in the factory gate, and other important outdoor place 150 w energy-saving lamps auxiliary lighting installation. Digital cameras do not need to undertake complex wiring, the whole front end is just a super five kind of twisted pair can complete all the signal transmission. So can decrease as far as possible to break ground for plant construction, digging ditches and cloth of buried pipes, cable work, try to reduce the influence of the factory environment.
2.5 the back-end design of centralized monitoring
Due to the whole system adopts full hd video network processing method, so the back-end video processing system configuration is quite important. Front with digital cameras, digital video signal transmission through the network to the back-end through backend image management server or image browse server control, management and browsing, as well as for digital video signal that send back for storage. So we in the back-end management server configuration 1 VMP center, to provide the user login authentication, equipment management, image browsing, yuntai control, real-time browsing, video playback, user switching, circular image, streaming media forwarding, and other functions, can support up to 8 road hd video browsing at the same time; In order to be able to treat all other points of hd video signal for video, we configure a 16 dish a special storage server, through this server to storage, front end 13 hd video signals stored time according to customer's specific requirements for customization.
2.6 network transmission system design
Network transmission is vital for network digital video monitoring, if the transport system can't satisfy the requirement of the network video transmission, so the network monitoring also is impossible. This system has a total of 97 sets of network digital video cameras, high-definition every road network transmission bandwidth digital video signal need not less than 2 MBPS by factory components by gigabit LAN transmission of digital video data. In a transmission network needs fixing the position of each point, closer to the adjacent point gathers switches can be used to access the backbone transmission system after convergence.
Together with 2 MB switch can, but need to have this part gigabit port to and gigabit butt, conditions allow, of course, but all adopt the gigabit architecture, the switch port number according to the specific circumstances. Uniform deployment for network transmission system planning, such as to other campus LAN planning. Suggest that the entire transmission system and other campus LAN unified planning, so that we can convenient resources reasonable use, reduce duplication of investment and the difficulty of wiring.
2.7 remote monitoring design
As a network digital video monitoring, remote network monitoring infinite extension is one big characteristic. Via the user requirement analysis, in building the factory related area of local monitoring at the same time, also need to be able to let users in other places of work, travel, or to remote monitoring, this system has the strong ability in developing network, as long as provide Internet interfaces and necessary equipment (router, etc.) can access the Internet, users in other places through land premises can access the network camera, to view the video image.
Since each network digital camera has its own data communications port and network IP address, the network can directly by the camera network IP access. Network digital cameras can be seen as a network device in the internal LAN, how do you make topical or public users can access to the network camera in other cities, need to understand clearly the internal LAN and the network structure. But network cameras outside network access all follow a bit, is just on the export router LAN network camera's IP address and port mapping to the public, require prior to network camera's IP address and gateway, and port and other network parameters are defined, and then map, respectively, by Internet explorer or a dedicated client and public IP communications port can access to the corresponding network camera. Also may apply for the domain name resolution, in Internet explorer browser or client add domain name can also access the network video camera. Dynamic DNS dynamic IP applications.
At the same time, we chose to use the network camera for the standard h. 264 encoding, support 720 p + FULLD1 DCIF, CIF, etc. Various combinations with double stream, and support RTSP protocol, can use PDA/PPC mobile monitoring so as long as the mobile phone can support play standard h. 264 video files can be mobile remote monitoring, it need to open mobile phone Internet access, and the ability to play h. 264 format video function.
2.8 the power supply system
System has a total of 97 points, the center have 5 servers, UPS selection according to the power of the whole system equipment size and quantity to decide, but the system design is not included in the scope of design. Outdoor point of lightning protection measures are recommended because of outdoor basically adopts the network cable, so can consider when lightning protection using anti surge at both ends and network equipment. Individual is higher and outdoor exposure point direct lightning prevention measures should be adopted.
The third chapter system function is introduced
3.1 hd video monitoring
The new h. 264 Main profile @ level algorithm 4.1 megapixels network cameras and wide Angle lens on the building internal monitoring of each office. Network camera support 32 gb SD card local rolling storage. Camera support UpnP protocol, but by the backend debugging tool detection and management network camera easily. Centralized management of the backend configuration server to front-end web camera to a centralized management, can support various browsing (group, cutting wheel, cutting of the combined images), through centralized management software manual and video (storage network data on the management server), front-end web camera for remote configuration, etc.
3.2 remote network monitoring:
In the local monitoring at the same time, through the network configuration, can realize remote monitoring and management, the superior remote viewing images, is in travel or at home can be easily monitored.
3.3 easily upgrade extensions
Using network video monitoring, to avoid the tedious video cable power cable wiring, network camera directly through the POE power supply, can make full use of existing network conditions.
