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How to improve the night vision effect of explosion-proof cameras?
How to protect the night vision effect of the camera is a small problem facing the current high-definition network explosion-proof camera, but the infrared night vision effect is also the main indicator to consider the quality of a surveillance camera, especially the pixels used in the explosion-proof HD network camera are much higher than the analog. In order to make the high-pixel video better, most manufacturers use IRcut to control the infrared rays during the day and night, and use the infrared light with higher power, so the daytime effect is better, but at night, it is prone to insufficient power supply. So how does the night vision effect of the explosion-proof camera improve?
1. Directly use the 220V power cable to the explosion-proof camera terminal, use a small 12V switching power supply; the wiring is troublesome, but the power cable diameter can be thinner, you need to use a better DC12V adapter, do not use inferior quality N"K9nM.
2. Use a power cord with a thick wire diameter to supply DC power to the explosion-proof camera. The scheme is relatively reliable, but the power line is relatively thick and the line cost is relatively high.
3, the distance is not too long, such as 30M, you 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 explosion-proof camera power supply. If used properly, the overall benefits are relatively high.
4. The centralized power supply terminal uses the DV24-48V switching power supply to supply power through the network cable. After the explosion-proof infrared high-definition network camera is added, the step-down module is reduced to DC12V. This solution needs to have a certain circuit foundation. But the cost is the lowest and the reliability is higher.
Compared with high-definition network surveillance explosion-proof cameras, SDI high-definition explosion-proof cameras have the advantages of no compression, low latency, easy installation, etc. These are the high-definition network explosion-proof cameras, and are also favored by engineers and users. The image compression of the SDI HD explosion-proof surveillance camera is at the back end of the monitoring system. Since there is no compressed packet without IP transmission, the image becomes more realistic and the data security becomes higher.
In addition to the normal surveillance image capture function, the explosion-proof cameras on the market nowadays do not capture the resolution by the resolution. It is important to obtain the position through the image, which can capture the moving target through thermal imaging technology. The fusion technology achieves image capture under zero light, and has a tracking of "heating materials", which is a good test.