At present, the high-definition video surveillance in the security market has risen rapidly and has been rapidly developed, but the infrared effect at night needs to be further improved. Based on some of our company's accumulated experience in HD projects over the years, we will discuss with you.
The engineering reasons affect the night vision effect of HD network explosion-proof cameras for the following reasons:
High-definition network explosion-proof cameras use much more pixels than simulations. In order to make high-pixel video better, most manufacturers use IRcut to control day and night infrared, and use more powerful infrared lights, so that the daytime effects are comparable. OK, but at night, it is prone to power shortages.
The solution is:
1. Use the 220V power cable directly to the camera and use a small 12V switching power supply; this solution is troublesome, but the power cable diameter can be smaller, and you need to use a better DC12V adapter. Do not use a poor quality adapter. N"K9nM
2. Use a thicker power cord for centralized DC power supply. This scheme is more reliable, but the power cord is relatively thick and the line cost is relatively high.
3, the distance is not too long, such as 30M, can use 4-5 and 7-8 pairs to transmit DC12V, so that the transmission line cross-sectional area has doubled, can significantly improve the quality of power supply. If used properly, the overall efficiency is relatively high. 4. The centralized power supply uses the DV24-48V switching power supply to supply power through the network cable. After the HD network camera is added to the buck module, it is reduced to DC12V. The program needs a certain circuit basis. However, the cost is the lowest and the reliability is relatively high. 5. POE switches and POE modules are directly used for power supply, but the price is the highest in several scenarios.
The engineering reasons affect the night vision effect of HD network explosion-proof cameras for the following reasons:
High-definition network explosion-proof cameras use much more pixels than simulations. In order to make high-pixel video better, most manufacturers use IRcut to control day and night infrared, and use more powerful infrared lights, so that the daytime effects are comparable. OK, but at night, it is prone to power shortages.
The solution is:
1. Use the 220V power cable directly to the camera and use a small 12V switching power supply; this solution is troublesome, but the power cable diameter can be smaller, and you need to use a better DC12V adapter. Do not use a poor quality adapter. N"K9nM
2. Use a thicker power cord for centralized DC power supply. This scheme is more reliable, but the power cord is relatively thick and the line cost is relatively high.
3, the distance is not too long, such as 30M, can use 4-5 and 7-8 pairs to transmit DC12V, so that the transmission line cross-sectional area has doubled, can significantly improve the quality of power supply. If used properly, the overall efficiency is relatively high. 4. The centralized power supply uses the DV24-48V switching power supply to supply power through the network cable. After the HD network camera is added to the buck module, it is reduced to DC12V. The program needs a certain circuit basis. However, the cost is the lowest and the reliability is relatively high. 5. POE switches and POE modules are directly used for power supply, but the price is the highest in several scenarios.
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