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The current ordinary infrared waterproof camera generally uses a photosensitive element to detect the illumination intensity of the environment, and generates a control signal according to the threshold determined in the design parameters to realize the opening of the infrared light. The threshold is determined by the environment in which it is used, the user's preference, and the designer's consideration of the importance of various factors. The products of each manufacturer are different. Such as 20, 10, 5 Lux. If the threshold is high, the opening time is earlier. It is possible that the camera has not switched color to black and white, and the infrared light is turned on. There are three disadvantages to this:
First, the use time of infrared light camera infrared light is extended, which affects the service life of the product; secondly, the infrared light is turned on when the color image can be generated, which will cause the image quality to decrease at this time; the third is to generate infrared light on the color image. Eyes (infrared eyes are also determined by principles, phenomena that people do not want to see). If the threshold is low, it is possible that the infrared light cannot be turned on in time when additional lighting is required. 
So how to solve the problem of image flashing of infrared waterproof camera? The ambient illuminance detected by the photosensitive element is slightly below the threshold and is a condition for the problem. There are two cases.
First, at some point in the evening, a small meeting time, this problem occurs, if you do not want to increase the cost, use the general heart, explain the reasons to the user, and tolerate it.
Second, this problem must occur if the lighting intensity is stable.
1. Change the threshold.
In the same model, the threshold is also different, and there is dispersion. The problem may be solved by replacing a product.
Products with different design thresholds are supplied by the manufacturer for replacement. Products with higher threshold design parameters are less likely to flicker.
2, change the environment to change the intensity of the illumination, the angle slightly changes the installation angle of the infrared waterproof camera, and move the detector to detect the illumination;
There will be a lot of changes, and it will leave the threshold to solve the flicker problem.
3. High-quality low-illumination camera core with backlight compensation and anti-glare, especially dedicated IR lens;
In addition, when someone or other object near the infrared waterproof camera reflects the infrared light, the detected illuminance changes repeatedly, causing flicker. For example, when doing demonstration test, detection, camera installation position is low, when there is an object blocking the camera at a close distance.
This is not a problem. When the IR waterproof camera is in the normal installation position, this phenomenon is naturally gone. As shown in the demonstration, just be careful not to let the infrared light directly reverse from the close distance to the photosensitive element.
Decomposition infrared camera flash processing coup
[ Huaqiang Security Network News ] It is understood that many infrared waterproof cameras now have the problem of image flicker. In the end, what kind of consequences will the image flicker bring to the image quality? Why does the infrared waterproof camera flash? As mentioned before, when the illumination intensity is lower than the threshold, the infrared light turns on. Closes above the threshold. Let us consider the case when the illumination intensity is slightly lower than the threshold: the photosensitive element detects that the illumination intensity is slightly lower than the threshold, and controls the infrared light to turn on the illumination - after the infrared light is illuminated, the detected illumination is increased (plus the reverse back) Infrared light), and beyond the threshold, controls the infrared light to turn off - causing the detected illuminance to decrease, once again controlling the infrared light to turn on. This does not stop, causing the image to flicker. This situation is the principle, not to mention normal, at least not the quality of the product.