As the most widely used fiber optic access network technology, it has been widely used in video surveillance transmission networks due to its advantages of full optical, high bandwidth, easy management, low cost, and saving fiber optic resources, such as traffic monitoring, intelligent campuses, intelligent communities, and other projects.
The video surveillance transmission network provides a complete equipment solution, which can meet the needs from initial construction to large-scale construction.
The characteristics of the "Ping An City Video" frequency monitoring system are as follows:
1. Meeting the high bandwidth requirements for uplink, video surveillance data is mainly transmitted from monitoring points to the monitoring center. The bandwidth of each PON port in the Su Shan Wei Da OLT is as high as 1.25G
2. Meet the requirements of wide area distribution and support multi-level splitting within a range of 30KM;
3. Supports flexible networking, with the option to provide 1-24 port ONU, or ONU+switch, POE-ONU
4. Support clustered management, with unified visual management of several to tens of thousands of monitoring system access points
5. Support for multi service concurrency across IPs. Support the integration and parallel operation of monitoring, television, internet and other businesses.
6. Support IP multicast technology to enable multiple monitoring centers to simultaneously view a point\\'s video in real-time;
EPON (Ethereum Passive Optical Network) is a combination of several best technologies and network structures currently available, and is the most suitable remote video monitoring technology for application in terms of technical indicators, cost-effectiveness, and development prospects.
2、 Ping An County "Ping An City" Video Surveillance System
1. System structure
The reference structure of the EPON system is shown in Figure 1:
Figure 1 EPON Network Structure Diagram
The video surveillance system mainly consists of a front-end video collector, transmission system, terminal controller, and display and recording equipment. This time, image information is mainly collected through an integrated intelligent camera, and the front-end camera is operated and controlled through a matrix control host. The matrix host also controls the switching of TV wall images. All the way through disk array storage. The top video surveillance system for "Ping An City" in Ping An County is shown in Figure 2
2. System implementation functions
The system mainly consists of front-end equipment, EPON network system, and video monitoring center.
The front-end equipment includes a camera. The pan tilt camera is used to collect real-time video signals from various monitoring points and can be controlled by the computer in the control center. Users can control the camera horizontally 360 degrees, vertically 90 degrees, and zoom. The front-end camera is connected to the EPON network system through a network cable, and the encoded and compressed monitoring information is collected to the monitoring management center through the EPON communication network. The monitoring center can see the real-time status of each monitoring point, and monitoring personnel can browse video images and remotely control the pan tilt camera through the monitoring center\\'s local area network or Internet.
The EPON network serves as a communication network with a wide coverage and adopts a point-to-point structure, which can cover a large range of users; Flexible networking, allowing for the design of different networking structures based on the layout of monitoring points; Strong scalability, EPON has reserved links or interfaces, and if needed in the later stage, monitoring points can be added. Short distance optical cables only need to be laid in the front end, and there is no need to add any hardware configuration in the back end; Simultaneously providing high bandwidth and high reliability, it will come from the front-end camera