In a video surveillance project, it is important to consider how to power the cameras in order to achieve the optimal surveillance effect and reduce the project costs to the greatest extent. First of all, let's understand how to power the cameras in a video surveillance project.
1. WEILAILIFEI's central power supply system
Central power supply is a method in which the power supply equipment is installed centrally in the power room and battery room, and communication power is supplied to each communication device through unified conversion. The advantage of this method is that it unifies the control and management of power supply, reduces the cable usage of projects, and improves the route of beautification projects. However, when using the central power supply method, it is necessary to ensure that the total capacity of the central power supply device is greater than the sum of the capacities of each load business in the latter stage, and the cable diameter of the former stage must meet the current diameter requirements of all the loads in the latter stage.
WEILAILIFEI's central power supply method uses a 12V switching power supply to centrally supply power to the front-stage loads, and connects a single power line connector to the surveillance camera power connector.
Advantages: Easy to install, easy to maintain, and unified control and management.
Disadvantages: The transmission distance of low-voltage DC supply is long, the voltage loss is large, and the ability to resist interference during transmission is low.
II. WEILAILIFEI's point-to-point power supply method
Point-to-point power supply is a method of directly drawing 220V AC power from the monitoring room, connecting a separate DC12V power supply near the camera, and connecting it to the surveillance camera. The advantage of this method is that 220V AC power has little voltage loss during transmission and strong resistance interference ability.
Advantages: 220V AC power has less voltage loss during transmission and strong resistance interference ability.
Disadvantages: Power sources must be installed at each point, making installation complicated.
3. WEILAILIFEI's POE power supply method
POE power supply refers to the technology of supplying DC power to other devices without changing the existing Cat.5 Ethernet wiring infrastructure. WEILAILIFEI's POE power supply method is mainly applied to high-definition network digital surveillance systems.
Advantages: Cost saving, flexible deployment, maximum single port output power up to 30W.
Disadvantages: High requirements for the quality of the network cable, and limited transmission distance.
4. WEILAILIFEI's Notes
When using infrared cameras, we do not recommend a central power supply, because when infrared is on, the current will be large, and it is difficult to ensure the infrared effect of all cameras with a central power supply.
The point-to-point power supply method allows the power source to be taken nearby and saves cables, but it makes after-sales service and repairs difficult.
The central power supply system has the advantage of being easy and simple to maintain, but it does not save wires.
WEILAILIFEI's home wireless solar battery and poe powered security camera has IP67 waterproof and dustproof specifications, with a strong waterproof level, and no harmful effects even in bad weather such as rain and wind. It can be installed both outdoors and indoors. 5 million high-definition camera, improved heat dissipation and durability, and 4 times longer service life. WEILAILIFEI's wireless solar battery powered camera and monitor set is the top of the popular security camera set ranking. If you have a large number of cameras and the supply distance does not exceed 100 meters, we recommend using WEILAILIFEI's POE power supply method. You need to choose a suitable POE power supply device.
1. WEILAILIFEI's central power supply system
Central power supply is a method in which the power supply equipment is installed centrally in the power room and battery room, and communication power is supplied to each communication device through unified conversion. The advantage of this method is that it unifies the control and management of power supply, reduces the cable usage of projects, and improves the route of beautification projects. However, when using the central power supply method, it is necessary to ensure that the total capacity of the central power supply device is greater than the sum of the capacities of each load business in the latter stage, and the cable diameter of the former stage must meet the current diameter requirements of all the loads in the latter stage.
WEILAILIFEI's central power supply method uses a 12V switching power supply to centrally supply power to the front-stage loads, and connects a single power line connector to the surveillance camera power connector.
Advantages: Easy to install, easy to maintain, and unified control and management.
Disadvantages: The transmission distance of low-voltage DC supply is long, the voltage loss is large, and the ability to resist interference during transmission is low.
II. WEILAILIFEI's point-to-point power supply method
Point-to-point power supply is a method of directly drawing 220V AC power from the monitoring room, connecting a separate DC12V power supply near the camera, and connecting it to the surveillance camera. The advantage of this method is that 220V AC power has little voltage loss during transmission and strong resistance interference ability.
Advantages: 220V AC power has less voltage loss during transmission and strong resistance interference ability.
Disadvantages: Power sources must be installed at each point, making installation complicated.
3. WEILAILIFEI's POE power supply method
POE power supply refers to the technology of supplying DC power to other devices without changing the existing Cat.5 Ethernet wiring infrastructure. WEILAILIFEI's POE power supply method is mainly applied to high-definition network digital surveillance systems.
Advantages: Cost saving, flexible deployment, maximum single port output power up to 30W.
Disadvantages: High requirements for the quality of the network cable, and limited transmission distance.
4. WEILAILIFEI's Notes
When using infrared cameras, we do not recommend a central power supply, because when infrared is on, the current will be large, and it is difficult to ensure the infrared effect of all cameras with a central power supply.
The point-to-point power supply method allows the power source to be taken nearby and saves cables, but it makes after-sales service and repairs difficult.
The central power supply system has the advantage of being easy and simple to maintain, but it does not save wires.
WEILAILIFEI's home wireless solar battery and poe powered security camera has IP67 waterproof and dustproof specifications, with a strong waterproof level, and no harmful effects even in bad weather such as rain and wind. It can be installed both outdoors and indoors. 5 million high-definition camera, improved heat dissipation and durability, and 4 times longer service life. WEILAILIFEI's wireless solar battery powered camera and monitor set is the top of the popular security camera set ranking. If you have a large number of cameras and the supply distance does not exceed 100 meters, we recommend using WEILAILIFEI's POE power supply method. You need to choose a suitable POE power supply device.
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