1. System Introduction The scale of the factory is large, the production and management departments are complex, and the safety factor is high. The combination of on-site monitoring and production command and dispatch in numerous production workshops, logistics channels, special outdoor venues and functional departments will greatly improve the factory's intelligent management level. Therefore, the installation of a network video surveillance system in the factory area has always been one of the indispensable management measures of many production enterprises or factories. Shenzhen Youtepu Technology Co., Ltd. specializes in the production of monitoring transmission equipment and has rich experience in designing solutions for factory monitoring systems. In recent years, with the popularization and deepening development of the Internet in China, the informatization of enterprises has been continuously deepened. Enterprises are gradually turning to the use of networks and computers to centrally process various data in important stages such as management, production, sales, logistics, and after-sales service. All industries have accelerated the construction of information network platforms. Most companies have or are laying internal computer local area networks; at the same time, the network has also provided a good platform for advanced emerging applications. In modern enterprise management, due to the increase in safety protection requirements, the monitoring system plays an increasingly important role. Combining the existing and pending network systems with the monitoring system can not only minimize the transformation period of the project, At the same time, it avoids the repeated investment of funds and improves the utilization rate of network resources. 2. System analysis The initial design plan of the factory video surveillance system should meet the performance of existing resources and network requirements. The construction of the front-end video acquisition subsystem and the video management system of the surveillance center all meet the "Opinions on the Construction of Urban Alarm and Surveillance Technology System" of the Ministry of Public Security. Performance requirements, strive for stable system operation, reliable data storage, and regular archiving of video data. First of all, the video surveillance system should ensure the personal safety of the workers in the factory and public activity areas, the safety of production equipment and other important facilities, prevent human sabotage, and obtain the process of the incident immediately after the accident. The video provides strong evidence for timely handling and accountability. This is the basic functional requirement of video surveillance. Another important aspect, the video surveillance system can play a role in assisting production in the daily production process of the factory, and realize the unattended production line. According to the requirements of government departments and relevant regulations of internal safety production management of enterprises, and according to the relevant national standards, combined with the factory video surveillance requirements, the network video surveillance system function is developed to achieve the following goals: 1) Video capture function: The front-end video capture system collects video and compresses and encodes it according to the transmission requirements, and converts it into an information format that can pass through the access gateway to meet the transmission on the digital exchange network. 2) Video transmission function: The compressed and encoded video information is transmitted in the factory's private network according to the work process, and according to the security management authority, it forms a transmission network system at all levels. At the same time, it can meet the management needs of the monitoring system, and transmitted to the superior system and stored. 3) Information processing function: all levels of systems process the received video information, etc. according to video classification and attribution, and process the stored information called. 4) Video storage and backup function: The monitoring center server should store video information and system logs, and the historical data information can be played back and stored in the network system according to the authority. 5) System control function: According to the authorization, the control commands issued by network users are transmitted to the front-end system, so that the monitoring center and authorized users can call and control any one of the front-end monitoring images. 3. System Design In modern enterprises, the factory implements a comprehensive network video surveillance system: the security monitoring section can perform real-time all-weather video surveillance on the company's factory entrances, workshops, office buildings, perimeter walls, warehouses, and other targets, and conduct major factory channels and production sites Monitoring; the administrative monitoring section conducts video surveillance on the office premises to understand the working conditions of employees, strengthen employee attendance management, and improve work efficiency; the production management section implements full monitoring of production lines and shipments, and timely understands the work conditions and assembly lines of each workshop Production situation. Some video images need to be kept secret, or some workshops need to be unattended due to the harmful work environment, and the production process can be monitored remotely; some equipment is not easy to access, and the manual inspection is more dangerous. You can use the camera to conduct Remote supervision; enterprise leaders use desktop computers in the office to keep abreast of the real-time production status of all major production links, deal with emergencies, and conduct two-way voice communication with the scene. You can use the browser access method to enter the system when you are out, and understand the production status at any time. Factory monitoring system diagram The components of this monitoring system are as follows: 1. Front end: install millions of high-definition network cameras at each monitoring point, and select different models such as ordinary gun machine, infrared gun machine, infrared hemisphere and high-speed ball according to different monitoring environments. 2. Transmission: Select the transmission method according to the distance from the camera to the monitoring center. The closest distance (within 400 meters) enters the monitoring center by cascading with the switch and the switch, and the longer distance is cascaded by the network cable and the switch plus the backbone fiber and fiber The transceiver enters the monitoring center. 3. Monitoring center: The monitoring center is mainly composed of four parts, a computer room switch, a DVR host, a TV wall, and a management host. 4. Sub-control center: The sub-control center is composed of a management host and a display device. 5. Client: The client host uses the client software to access the camera, and supports a maximum of 36 channels on the same screen. The signals of all cameras in the front end are connected to the switch in the computer room, and each DVR host is also connected to the switch. Each host displays 16 images, and is connected to the LCD TV or monitor through the VGA signal. In addition to the LCD TV connected to the DVR host, The number of TVs can be increased (for example, with LCD splicing screens), and these TVs are connected to the computer room switch through a high-definition decoding box (each TV is equipped with a decoding box). The recording data is stored in each DVR host, and different sizes of hard disks or disk cabinets need to be mounted according to the recording time. All operations of the monitoring center are realized through the management of the host, including image preview, screen switching on the wall, viewing the host video, and the function of alarm linkage can also be realized as needed. Each DVR host in the monitoring center is connected to the Internet through a switch, and remote users (such as superior leaders) can perform image preview, snapshot, and video recording operations through the client (setting different permissions according to different users). 4. System advantages and features The network video surveillance system is not only powerful, but also surpasses the conventional analog video surveillance system in performance. The advantages of this system are mainly manifested in the following aspects: 1. Realize high-quality remote video monitoring: the system is completely based on the network, advanced architecture, stable performance, high-definition picture quality, dynamic image processing, intelligent analysis. 2. There is no blind spot in monitoring: the current network technology can support various transmission lines. The network video monitoring system transmits through the network and uses POE switches for networking without laying power supply cables. The camera can be installed anywhere that the network can reach. Later It is convenient to change the network and maintain. 3. Unified platform management: centralized management, diverse methods, easy operation, fully support common network protocol, highly integrated. 4. Unlimited recording time and easy expansion: The network video surveillance system supports centralized and distributed network storage, which is extremely easy to expand. Capacity can be expanded at any time as needed, storage devices can be distributed anywhere on the network, and storage backup strategies can be flexibly formulated. 5. Make full use of the existing network: reasonable use of existing network resources, save wiring costs, and shorten the project cycle. Choose Power-over-Ethernet (POE), which provides stable power supply with twisted-pair cables to minimize engineering costs. 6. Provide more product and function options: Network video technology has the ability to provide a high level of integration, can integrate other functions and services, so that the system can continue to develop. Adopting recognized standard protocols and information networks can make it easy to integrate a large number of products in the system. Switching to network technology means investing in a system that will continue to be used in the future. 7. Allow the system to continuously upgrade and expand smoothly: The network system is both flexible and fully upgradeable to meet the user's changing and expansion needs. The increase of monitoring front-end and monitoring workstations is plug and play, smooth upgrade, continuous expansion, and deployment at anytime and anywhere.
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