With the rapid development of network monitoring in recent years, the technical threshold is also getting higher and higher. As a professional security product manufacturer and solution provider, the technical support provided by XSL is increasingly becoming more systematic and systematic. . In the technical exchanges, there are problems with POE power supply among the most perplexed project providers. For this purpose, we focus on arguing for doubts.
Question 1: What is PoE technology?
PoE (Power Over Ethernet) refers to some IP-based terminals (such as IP phones, wireless LAN access points APs, network cameras) without any changes to the existing Ethernet Cat.5 cabling infrastructure. Etc.) While transmitting data, it is also possible to provide DC powered technology for such devices. PoE technology can ensure the current operation of structured cabling while ensuring the normal operation of existing networks, minimizing costs. A complete PoE system consists of two parts: the power supply equipment and the power receiving equipment. PSE: Ethernet switches, routers, hubs, or other network switch devices that support POE functionality. Powered Device (PD): In the surveillance system, the network camera (IPC)
Question 2: Is PoE power supply stable?
From a technical point of view, PoE technology has developed for many years and is currently at a very mature stage. However, due to current cost pressures in the monitoring market, the quality of PoE switches or cables used is too low, or the design itself is not reasonable, resulting in a large workload of project maintenance using PoE power supply. Therefore, PoE power supply is not universal among engineering firms. Stable point of view. The network monitoring project is different from the ordinary network cabling, the data transmission volume is very large, the power is high, and it requires all-weather uninterrupted work. The use of quality assured PoE equipment and wire is a guarantee for the stability of the entire system.
Question 3: What are the advantages of PoE power supply solutions?
1. Simplify wiring and save labor costs One network cable transmits data and power at the same time. PoE eliminates the time required for expensive power supply and power supply installation, saving cost and time.
2. Safety and convenience The PoE power supply device only supplies power to the devices that need power supply. Only the devices that require power supply are connected, and the voltage of the Ethernet cable will exist. Therefore, the risk of leakage on the line is eliminated. Users can securely mix legacy devices and PoE devices on the network. These devices can coexist with existing Ethernet cables.
3. Facilitating Remote Management Like data transmission, PoE can monitor and control the device by using Simple Network Management Protocol (SNMP). This feature can provide such functions as night shutdown, remote restart, and the like.
Question 4: What are the risks or disadvantages of PoE power supply technology in engineering applications?
1. The power is insufficient, and the power receiving end does not move: The 802.3af standard (PoE) output power is less than 15.4 W, which is sufficient for general IPC, but for a high-power front-end device such as a dome camera, the output power is not sufficient. To the request.
2. Risks are too concentrated: Generally, a PoE switch will power multiple front-end IPCs at the same time. Any failure of the POE power supply module of the switch will cause all cameras to fail to work. The risk is too concentrated.
3. Equipment and maintenance costs are high: Compared to other power supply methods, PoE power supply technology will increase the workload of after-sales maintenance. In the sense of safety and stability, the power supply alone is the best for stability and security.
Question 5: How to choose a PoE switch?
1. The power consumption of devices that require more power consumption: PoE switches use different standards and output power will vary.
2. How many devices can be powered at most: An important indicator of a PoE switch is the total power of a PoE.
3. The number of interfaces required, whether it is with fiber ports, with or without network management, rate (10/100/1000M)
Question 6: How safe is PoE-powered transmission distance? What are the recommendations for choosing a network cable?
The safe transmission distance of POE power supply is 100 meters. It is recommended to use super five-category copper cable. In fact, PoE power supply technology has high requirements for wire rods. It is recommended that in monitoring projects, do not save costs on wire materials.
Non-PoE solutions: Each camera requires wires, network cables, PVC bushings, sockets, security power supplies, and a lot of accessories. The lines are messy, complicated to install and difficult to maintain.
PoE solution: a camera with one line, data, power together, simple and convenient.
PoE is more stable and fewer nodes, PoE greatly reduces the failure rate PoE is convenient An IPC only needs one network cable, convenient wiring, short construction period PoE is cheaper than using security power scheme PoE equipment difference <security power + power line + PVC pipe + power socket +86 Box + labor costs +...
Question 1: What is PoE technology?
PoE (Power Over Ethernet) refers to some IP-based terminals (such as IP phones, wireless LAN access points APs, network cameras) without any changes to the existing Ethernet Cat.5 cabling infrastructure. Etc.) While transmitting data, it is also possible to provide DC powered technology for such devices. PoE technology can ensure the current operation of structured cabling while ensuring the normal operation of existing networks, minimizing costs. A complete PoE system consists of two parts: the power supply equipment and the power receiving equipment. PSE: Ethernet switches, routers, hubs, or other network switch devices that support POE functionality. Powered Device (PD): In the surveillance system, the network camera (IPC)
Question 2: Is PoE power supply stable?
From a technical point of view, PoE technology has developed for many years and is currently at a very mature stage. However, due to current cost pressures in the monitoring market, the quality of PoE switches or cables used is too low, or the design itself is not reasonable, resulting in a large workload of project maintenance using PoE power supply. Therefore, PoE power supply is not universal among engineering firms. Stable point of view. The network monitoring project is different from the ordinary network cabling, the data transmission volume is very large, the power is high, and it requires all-weather uninterrupted work. The use of quality assured PoE equipment and wire is a guarantee for the stability of the entire system.
Question 3: What are the advantages of PoE power supply solutions?
1. Simplify wiring and save labor costs One network cable transmits data and power at the same time. PoE eliminates the time required for expensive power supply and power supply installation, saving cost and time.
2. Safety and convenience The PoE power supply device only supplies power to the devices that need power supply. Only the devices that require power supply are connected, and the voltage of the Ethernet cable will exist. Therefore, the risk of leakage on the line is eliminated. Users can securely mix legacy devices and PoE devices on the network. These devices can coexist with existing Ethernet cables.
3. Facilitating Remote Management Like data transmission, PoE can monitor and control the device by using Simple Network Management Protocol (SNMP). This feature can provide such functions as night shutdown, remote restart, and the like.
Question 4: What are the risks or disadvantages of PoE power supply technology in engineering applications?
1. The power is insufficient, and the power receiving end does not move: The 802.3af standard (PoE) output power is less than 15.4 W, which is sufficient for general IPC, but for a high-power front-end device such as a dome camera, the output power is not sufficient. To the request.
2. Risks are too concentrated: Generally, a PoE switch will power multiple front-end IPCs at the same time. Any failure of the POE power supply module of the switch will cause all cameras to fail to work. The risk is too concentrated.
3. Equipment and maintenance costs are high: Compared to other power supply methods, PoE power supply technology will increase the workload of after-sales maintenance. In the sense of safety and stability, the power supply alone is the best for stability and security.
Question 5: How to choose a PoE switch?
1. The power consumption of devices that require more power consumption: PoE switches use different standards and output power will vary.
2. How many devices can be powered at most: An important indicator of a PoE switch is the total power of a PoE.
3. The number of interfaces required, whether it is with fiber ports, with or without network management, rate (10/100/1000M)
Question 6: How safe is PoE-powered transmission distance? What are the recommendations for choosing a network cable?
The safe transmission distance of POE power supply is 100 meters. It is recommended to use super five-category copper cable. In fact, PoE power supply technology has high requirements for wire rods. It is recommended that in monitoring projects, do not save costs on wire materials.
Non-PoE solutions: Each camera requires wires, network cables, PVC bushings, sockets, security power supplies, and a lot of accessories. The lines are messy, complicated to install and difficult to maintain.
PoE solution: a camera with one line, data, power together, simple and convenient.
PoE is more stable and fewer nodes, PoE greatly reduces the failure rate PoE is convenient An IPC only needs one network cable, convenient wiring, short construction period PoE is cheaper than using security power scheme PoE equipment difference <security power + power line + PVC pipe + power socket +86 Box + labor costs +...
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