Infrared cameras are quite strict in the installation and matching process because of their particularity. If not done properly, the IR camera has more noise than usual (white spots), especially in the evening.
Cause 1. Insufficient infrared camera current causes noise (snow spots). Some outdoor short-distance use of centralized power supply 12V is very convenient, but if it is long-distance, it should not use switching power to concentrate on 12V power supply; because it is a long-distance infrared lamp. Large heat output, 12V power supply instability may lead to insufficient power; and all without built-in heat sink is prone to burnout in the presence of unstable current; Second, the current decay speed, may lead to infrared light can not work properly, in the CCD The illuminance is relatively high and the infrared light auxiliary light is not obtained, so the snow flutters;
2, the circuit design is not reasonable; we produce infrared cameras, not only the infrared light directly into the camera and then on the line, but to be installed before the camera circuit redesigned and aging treatment. Many small-scale processing plants on the market use cheap electronic components, buy inexpensive infrared lamps, and directly use soldering irons for soldering. There are no redesigns or aging treatments for circuits; other factories that make low-end products, in order to save money, put The control board of the control circuit board is removed or integrated with the light board, which easily leads to the infrared light being subject to unstable current and heat, so that the inferior infrared light can not work normally.
3, infrared camera infrared light quality is poor, infrared light angle and infrared distance with the lens does not match the snow floating many companies in order to facilitate their own procurement and installation, use a variety of different angles of light mixed together, so that the use of benefits is They can barely use different millimeter-sized lenses for the same type of lamp. The disadvantage is that people always feel that the angle and distance of the lamp are not suitable for the lens. When the angle is not suitable, flashlight phenomenon or narrow electric phenomenon is prone to occur; when the distance is not When you match, for example, if you use a 12mm lens, but use a light of 10 to 20 meters, then you will have a gray phenomenon; in the distance is a muddy, near fluttering snow; also, poor quality infrared light, In addition to decoration, the more lights, the more problems, the more concentrated the lights, the greater the amount of heat, the easier it is to burn;
4, handicraft problems: Many people when hand-made, the infrared light is not concentrated, astigmatism; scattered light leads to light everywhere, but a gray phenomenon; infrared light front end of the cotton file is not tight, concentrated infrared red scattered light Therefore, it is a vast phenomenon;
5, built-in is a poor infrared camera, illumination is very high, many factories in order to obtain a brighter image under the same premise of infrared lights, artificially increase the sensitivity of the CCD; because many manufacturers use very low for price competition The built-in camera, this kind of camera in the case of insufficient light to fill the infrared light, in order to mention more bright, so artificially increase the gain sensitivity of the CCD, with us on the hard disk video recorder to adjust the high brightness, is prone to snow phenomenon .
6. Another possibility is that in the case of more dust outside, especially in the wild, it is possible that the infrared light in the camera shoots tiny particles that are invisible to the naked eye. This does not turn on the infrared light during the day. Under the circumstances, the inner eye and the camera do not feel obvious; this is the environment.
Solution:
1. Use a high-stability transformer to solve the problem of insufficient current. Use a multimeter to test the voltage and current to ensure that the infrared lamp works normally.
2, the use of high-quality infrared light; this is equally important, infrared light is not good, no matter how good the current is also useless.
3, replace the poor camera inside. It is possible that the camera's illumination is extremely high, and in the case of low outdoor lightness, snow is easily presented; a black-and-white camera or a color-to-black and white color camera is used.
4, using double filter piece or double glass structure, improve the infrared light intake at night and the effective impact of water mist into the lens.
Cause 1. Insufficient infrared camera current causes noise (snow spots). Some outdoor short-distance use of centralized power supply 12V is very convenient, but if it is long-distance, it should not use switching power to concentrate on 12V power supply; because it is a long-distance infrared lamp. Large heat output, 12V power supply instability may lead to insufficient power; and all without built-in heat sink is prone to burnout in the presence of unstable current; Second, the current decay speed, may lead to infrared light can not work properly, in the CCD The illuminance is relatively high and the infrared light auxiliary light is not obtained, so the snow flutters;
2, the circuit design is not reasonable; we produce infrared cameras, not only the infrared light directly into the camera and then on the line, but to be installed before the camera circuit redesigned and aging treatment. Many small-scale processing plants on the market use cheap electronic components, buy inexpensive infrared lamps, and directly use soldering irons for soldering. There are no redesigns or aging treatments for circuits; other factories that make low-end products, in order to save money, put The control board of the control circuit board is removed or integrated with the light board, which easily leads to the infrared light being subject to unstable current and heat, so that the inferior infrared light can not work normally.
3, infrared camera infrared light quality is poor, infrared light angle and infrared distance with the lens does not match the snow floating many companies in order to facilitate their own procurement and installation, use a variety of different angles of light mixed together, so that the use of benefits is They can barely use different millimeter-sized lenses for the same type of lamp. The disadvantage is that people always feel that the angle and distance of the lamp are not suitable for the lens. When the angle is not suitable, flashlight phenomenon or narrow electric phenomenon is prone to occur; when the distance is not When you match, for example, if you use a 12mm lens, but use a light of 10 to 20 meters, then you will have a gray phenomenon; in the distance is a muddy, near fluttering snow; also, poor quality infrared light, In addition to decoration, the more lights, the more problems, the more concentrated the lights, the greater the amount of heat, the easier it is to burn;
4, handicraft problems: Many people when hand-made, the infrared light is not concentrated, astigmatism; scattered light leads to light everywhere, but a gray phenomenon; infrared light front end of the cotton file is not tight, concentrated infrared red scattered light Therefore, it is a vast phenomenon;
5, built-in is a poor infrared camera, illumination is very high, many factories in order to obtain a brighter image under the same premise of infrared lights, artificially increase the sensitivity of the CCD; because many manufacturers use very low for price competition The built-in camera, this kind of camera in the case of insufficient light to fill the infrared light, in order to mention more bright, so artificially increase the gain sensitivity of the CCD, with us on the hard disk video recorder to adjust the high brightness, is prone to snow phenomenon .
6. Another possibility is that in the case of more dust outside, especially in the wild, it is possible that the infrared light in the camera shoots tiny particles that are invisible to the naked eye. This does not turn on the infrared light during the day. Under the circumstances, the inner eye and the camera do not feel obvious; this is the environment.
Solution:
1. Use a high-stability transformer to solve the problem of insufficient current. Use a multimeter to test the voltage and current to ensure that the infrared lamp works normally.
2, the use of high-quality infrared light; this is equally important, infrared light is not good, no matter how good the current is also useless.
3, replace the poor camera inside. It is possible that the camera's illumination is extremely high, and in the case of low outdoor lightness, snow is easily presented; a black-and-white camera or a color-to-black and white color camera is used.
4, using double filter piece or double glass structure, improve the infrared light intake at night and the effective impact of water mist into the lens.
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