Over the years, the dome camera has become the highlight of our surveillance applications. With the widening of monitoring applications, hemispherical cameras have been widely used in indoor surveillance because of their advantages such as convenience of installation and debugging, and concealment of surveillance. For example, there are applications where ceilings and light are not changed. What are the common dome camera and how to solve it?

Problem 1: Infrared dome camera series shows poor image illumination, white or bright white aperture at night

It should be said that the phenomenon is caused by improper assembly of the machine. When the photosensitive device (photoresistor) is too far away from the infrared hemisphere camera during assembly, it will cause the incomplete start of the infrared lamp to cause the night illumination of the machine to be poor; the phenomenon of image whitening or bright white aperture is mainly caused by The infrared light emitted by the infrared light emitting tube is refracted by the dome cover to the lens. To solve this problem, it is necessary to avoid the infrared light refracting to the lens surface. Usually, a sponge ring is used to isolate the lens from the infrared light. The ball cover must be tightly attached during assembly. Sponge ring.

Problem 2: Vertical bars or bars appear on the screen

This situation is generally the output voltage ripple of the machine power supply is too large, should strengthen the filter and use good performance DC power supply.

Question 3: Infrared dome camera color distortion, color cast

It may be that the white balance switch (awb) is not properly set, or the ambient light conditions may be changed too much. At this time, check whether the switch setting is in the off position and you should think of ways to improve the ambient light conditions.

Problem 4: The waterproof and heat dissipation effects begin to deteriorate

After the infrared hemisphere camera is long, there will be some water vapor in this area. This phenomenon is more common in northern China. The reason for this phenomenon is mainly due to the fact that the sealing effect of the outer shell is not enough and the temperature difference is not considered when the fashion machine is used. When the infrared lamp starts to work, it will generate a lot of heat. Due to the unreasonable design of the shape of the camera casing, the heat dissipation is not timely. To solve this problem, it is considered that the housing of the infrared dome camera is made into a plurality of trunkings, which is conducive to heat dissipation. .

Question 5: Infrared dome camera is normal during the day and white at night

This phenomenon is generally caused by reflection of the machine environment or the use of space is too small, due to infrared light reflection caused by the solution to this phenomenon should first determine whether the use of environmental reflections, to improve the use of the environment as much as possible, followed by inspection of the machine Whether the effective infrared distance corresponds to the actual usage distance; if a long-distance infrared machine is used in a very small space, the machine image will be white because the infrared light is too strong.

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ASME SA335 Boiler Steel Pipe

ASME SA335 Boiler Pipe

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