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There are three ways to use optical fiber transmission in video surveillance engineering: video optical transceiver access, optical fiber transceiver access, and PON access. Among them, the video optical transceiver access and optical fiber transceiver access are used in traditional engineering projects, and they can provide high network transmission bandwidth. However, the utilization of optical fiber resources is low and the component cost is high. PON access is only gradually applied in recent years, but it can solve the monitoring distance problem. For PON access and optical fiber access two fiber transmission methods, how much difference between them in the end?
Optical Video Optical access <br> <br> in the photoelectric conversion lossless way point to point fiber access local monitoring police access platform, a local monitor, adjust if needed Branch * see surveillance video matrix The system provides video and control interfaces that are connected to the * branch office. Through the * private network for the transmission of control signals and video signals, the second and third levels of image monitoring are performed at the branch and city offices.
This access method is currently a widely used video surveillance system solution, but this access method has the following deficiencies:
1) Only applicable to analog surveillance camera access requirements;
2) The networking technology is old, the network structure is complex, the expansion performance is poor, and the expansion cost is high;
3) The network adaptability is poor. On the one hand, the access requirements for 720P and 1080P resolution high-definition surveillance cameras (IPCs) cannot be applied. On the other hand, when the system functional requirements change greatly, the amount of equipment cutover engineering is large;
4) The peer-to-peer system consumes a lot of line resources and the utilization rate of line resources is low;
5) Each police station stores it separately, which requires high requirements for the space of the engine room and a large demand for the energy consumption of the engine room.
PON access monitoring point <br> <br> camera output image signal of the digital video stream through the ONU PON access, then through the optical splitter (1:32 commonly used, may be arranged as needed) multi-point to point Access.
This access method has the following features:
1) Applicable to various HD, Ultra HD camera access requirements such as 720P/1080P/4K;
2) PON bearer technology as the industry's mainstream access network networking technology, the network structure is simple, the system stability is high;
3) The network has strong adaptability, and it can respond flexibly when the system functions and performance requirements change greatly.
4) The network expansion performance is strong. In the initial stage of construction, sufficient ports can be reserved for the equipment, and the cost of the subsequent expansion is low;
5) The utilization ratio of the line resources is high, and the optical ratio can be flexibly configured according to the actual situation of the front-end point so as to maximize the utilization rate of the line resources.
PON technology is the mainstream access technology of “urban optical network†in recent years. It has flexible networking modes and various types of access services. It can better solve the problem of wide access coverage of video surveillance systems, uncertain access point location, and access. The front-end equipment is very adaptable in terms of digitization and other aspects.
Optical Video Optical access <br> <br> in the photoelectric conversion lossless way point to point fiber access local monitoring police access platform, a local monitor, adjust if needed Branch * see surveillance video matrix The system provides video and control interfaces that are connected to the * branch office. Through the * private network for the transmission of control signals and video signals, the second and third levels of image monitoring are performed at the branch and city offices.
This access method is currently a widely used video surveillance system solution, but this access method has the following deficiencies:
1) Only applicable to analog surveillance camera access requirements;
2) The networking technology is old, the network structure is complex, the expansion performance is poor, and the expansion cost is high;
3) The network adaptability is poor. On the one hand, the access requirements for 720P and 1080P resolution high-definition surveillance cameras (IPCs) cannot be applied. On the other hand, when the system functional requirements change greatly, the amount of equipment cutover engineering is large;
4) The peer-to-peer system consumes a lot of line resources and the utilization rate of line resources is low;
5) Each police station stores it separately, which requires high requirements for the space of the engine room and a large demand for the energy consumption of the engine room.
PON access monitoring point <br> <br> camera output image signal of the digital video stream through the ONU PON access, then through the optical splitter (1:32 commonly used, may be arranged as needed) multi-point to point Access.
This access method has the following features:
1) Applicable to various HD, Ultra HD camera access requirements such as 720P/1080P/4K;
2) PON bearer technology as the industry's mainstream access network networking technology, the network structure is simple, the system stability is high;
3) The network has strong adaptability, and it can respond flexibly when the system functions and performance requirements change greatly.
4) The network expansion performance is strong. In the initial stage of construction, sufficient ports can be reserved for the equipment, and the cost of the subsequent expansion is low;
5) The utilization ratio of the line resources is high, and the optical ratio can be flexibly configured according to the actual situation of the front-end point so as to maximize the utilization rate of the line resources.
PON technology is the mainstream access technology of “urban optical network†in recent years. It has flexible networking modes and various types of access services. It can better solve the problem of wide access coverage of video surveillance systems, uncertain access point location, and access. The front-end equipment is very adaptable in terms of digitization and other aspects.
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