Comparison of advantages and disadvantages of the three transmission systems of monitoring system
Currently, the monitoring of the three major transmission technologies: PoE, EoC and PLC. Whether it is an analog monitoring system or a network monitoring system, different system architectures apply different types of transmission. However, what are the advantages and disadvantages of each of these three transmission technologies? This is the focus of our discussion for this issue. PoE transmission power supply PoE technology has many advantages. It transmits data through the same Ethernet cable, with a versatile function. As the insiders said, if the surveillance camera supports PoE, then not only simplifies the installation process. Reduce installation and maintenance costs, reflecting the objective data also increased the stability of the monitoring system. Three advantages and disadvantages of transmission contrast To build a simulation monitoring system must be installed power lines and laying power pipes, it is necessary to have a stable power supply, but also consider the outdoor use of the environment. As a single Power over Ethernet system and data transmission channel, the network cable simplifies many processes. In addition, centralized management of power solved the problem. PoE transmission saves space and greatly reduces labor costs by eliminating the need for complex cable infrastructure. The entire monitoring system without our usual understanding of the power supply, wire, greatly improved security. Pure weak electric office to reduce the risk. Complex wiring and wiring headache? The most easy way to transfer - EoC The biggest advantage of EoC transmission is the ability to take advantage of the existing coaxial cable, saving installation costs for new transmission media. Without changing any monitoring architecture, EoC has a long transmission distance and fast transmission speed. Of course, as the distance further increases, the video signal also decays, but the rate can still maintain the ideal value of 1.5Mbps. One of the added benefits of using SLOC is that it supports a hybrid analog and network camera monitoring system that allows people to change network surveillance cameras in places of importance other than through a coaxial cable power supply simulation system reduce. The most used PLC power line transmission I have introduced the power line monitoring technology, has also been the industry insiders call it a "no change" monitoring transmission. Compared with the above transmission technology, PLC does not need to install additional wires, plug and play mode to do; there is no surveillance camera compatibility issues, because no surveillance camera does not require power. The best interpretation of the PLC power line transmission is to monitor the camera as the home appliances, whether in series or in parallel, video transmission, power supply are relied on the wire to complete. With cable quality ideal, PLCs support data rates up to 200Mpbs for distances up to 500 meters; it supports 128-bit AES-encrypted data and is ideal for applications that require a high level of security. It also supports multipoint connections, which is the popular understanding of the series and parallel circuits. Power line transmission is very simple No one in the field of video surveillance is perfect. This is like network monitoring is still not able to completely replace analog monitoring, the same transmission also has limitations. Each monitoring technology is to better help integrators to complete the installation, to meet the final needs of users. Objectively understand their shortcomings, as far as possible to make up for deficiencies. The most obvious drawback of PoE lies in the transmission distance. The transmission within 100 meters can also be handled. If you want to achieve long-distance transmission, you have to go to the repeater. When the monitoring system requires high-power power supply equipment, PoE can not be completed, when the power exceeds a certain limit, the network cable power supply voltage is difficult to load. It solves the problem of transmission distance compared to EoC transmission, but the continued emergence of a moderate increase in the monitored signal-noise ratio value. In addition, EoC transport only supports point-to-point connection, the operation is not flexible. Compared to other transmission media, SLOC and VDSL2 support lower data rates, fewer cameras to support, and 1.3 megapixel surveillance cameras only support up to four. PLC application area is slightly limited, PLC application is a form of home automation system, smart meters, smart home, etc. may become the most widely used PLC. As the smart home market continues to grow, we can see more about PLC transmission technology, which is also a manifestation of surveillance camera data transmission. Hang the shock absorber bracket,Shock Absorber Bear,Shock Absorber,Auto Spare Parts Dongguan ganzoo prototype manufacture co.,ltd , https://www.gz-proto.com
