More and more web camera POE power supply, reduce the power wiring multifarious affairs, only reasonable application of new technology can avoid multifarious after-sales problem, let's talk about POE power supply what problem should note in the monitoring and control system. There are many ways to power webcams in the security and surveillance area, but it has been controversial since PoE power came into being. Some people think it is feasible, easy to use and convenient. Others say it is unstable and difficult to maintain later.
Network cameras are made by first motherboard module and infrared lamp board of housing and lens these accessories, network module, power consumption and voltage withstand range and POE, if the network module, high power consumption, high fever, high voltage, low voltage will stall will res POE power supply, true kung fu security module chip are all made of wide voltage, low current design, can fully meet any POE power supply, there is no start slowly, or no image and so on. In addition, the infrared lamp board is a large power consumption, if the power is too large, POE power supply is not suitable.
Network monitoring is different from the traditional monitoring, which has a high demand for real-time and smooth monitoring. It requires high quality work for 24 hours without interruption. And the peace of the city construction, network monitoring is widely used, to ensure the security of the city, tens of thousands of webcams, give the camera power supply is a big job. People who have done this should know that sometimes a place or environment is not suitable for pulling wires or installing power sockets. Where else to install the camera? If so, the best monitoring sites will be lost.
This is when the PoE is powered, and power is provided without moving the camera. PoE power supply is to transmit power and inside the cable to the electric equipment, and network monitoring is also USES the Internet to transmit video signals, so the same cable to transmit power and data signals, greatly saves the cost, and is very convenient. Even if the camera and the PoE switch are 50 meters apart, they can get a constant supply of power to fulfill their monitoring responsibilities.
Because the PoE power standard stipulates that the maximum transmission data of PoE power can reach 100 meters, and power can be provided to any power receiving device within this distance. So PoE power is still very suitable for network monitoring. Can all network monitoring be powered by PoE?
Not really. If the distance of the webcam that needs power supply is too far, it is better to reach more than 100 meters or even thousands of meters, which is not suitable for PoE power supply. Other methods are needed. In addition, the maximum power provided by PoE is no more than 30W. If the power of network camera exceeds 30W, PoE cannot be used for power supply. In addition, PoE power can be used in other cases. Even use PoE power supply, also need to choose the appropriate PoE for electrical appliances or PoE switches, such as power is whether appropriate, the bandwidth of the power supply switch is reasonable, and so on, if there is no right, is likely to appear "opposition" says PoE power supply instability phenomenon
Conclusion: the reasonable application of POE power supply is good and convenient, but it is not suitable for every place. The network cable must be good. The shorter the distance, the better. Unreasonable using there really a problem is more, such as infrared camera at night is not bright, or too much camera interference, dark image, the image sometimes without all these problems may be due to a lack of POE power supply.