Infrared cameras are quite strict in the installation and matching process because of their particularity. If it is not done properly, infrared cameras have many snow spots in addition to their whitening and dazzling. In the evening, if the snow falls in the sky, it will be like snow. The following are the reasons why the snow conditions have been summarized:
　 First, the infrared camera current lack causes the snow point to produce some outdoor short distance with centralized power supply 12V is very convenient, but if it is a long distance, it should not use the switch power original concentrated 12V power supply; because one is long-range infrared light heat, 12V power supply instability may lead to insufficient power; and all without built-in heat sink device is prone to burnout under unstable current conditions; second, current decay speed may cause infrared light to fail to work properly, and the CCD illumination is relatively high. I don't get the auxiliary light of the infrared lamp, so the snow flutters.
Second, the 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 It is because they can use different millimeter-size lenses with the same type of lamp. The disadvantage is that people always feel that the angle and distance between the lamp and the lens are not suitable. When the angle is not suitable, flashlight phenomenon or narrow electric phenomenon will easily occur; when the distance When you don't 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 blemish, fluttering in the near place; and, poor quality infrared light In addition to decoration, the more lights there are, the more problems there are, the more concentrated the lights, the greater the amount of heat, and the easier it is to burn.
Third, handicraft issues
When many people do it by hand, the infrared light is not concentrated, astigmatism; scattered light leads to light everywhere, but a gray phenomenon; the infrared light front end of the cotton file is not tight, concentrated infrared red light so a vast phenomenon.
Fourth, the built-in is a poor infrared camera, high illumination, 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 The poor camera built-in, this kind of camera in the case of insufficient light in the infrared light, in order to mention more bright, so artificially increase the gain sensitivity of the CCD, with us on the hard disk recorder to adjust the high brightness, is likely to appear snow phenomenon of.
Fifth, the circuit design is irrational; we produce infrared cameras, not just to install infrared light directly into the camera and then on the line, but to be installed before the redesign and aging of its camera circuit. 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 lamp being subject to unstable current and heat, so that the inferior infrared light can not work normally.
Sixth, another possibility is that in the case of outdoor dust, especially in the wild, it is possible that the infrared light in the camera shoots tiny particles that are invisible to the naked eye. In the daytime, the infrared light does not When turned on, the inner eye and the camera do not feel obvious; this is the environment.
In summary, there are many reasons for having more raw snow flakes, but the method is always more difficult than that. If only the real reasons are found, the solution is much simpler. As long as you are willing to spend the cost, take the time:
First, the use of high-stability transformers to solve the problem of current shortage; use a multimeter to test the voltage and current size to ensure the normal operation of infrared light;
Second, the use of high-quality infrared light; this is equally important, infrared light is not good, even the best current is not useful;
Third, replace the poor camera inside. It is possible that the camera's illumination is extremely high, and in the case of low outdoor brightness, snow is easily presented; a black-and-white camera or a color-to-black and white color camera is used;
Fourth, the use of double filter or dual glass structure, to improve the infrared light intake at night and the effective impact of water mist into the lens;
Infrared cameras need to solve the following difficulties:
1 After installing the infrared lamp, it is necessary to re-set the circuit and aging; pay attention to manual issues, pay attention to the problem of infrared light spotlight; this requires the installation staff have a considerable sense of responsibility and patience;
2 The built-in camera requires a minimum of 0.1 illuminance, otherwise it is prone to snowflake; this requires the manufacturer to have the necessary investment and determination to deal with it carefully;
3 Infrared cameras with long-distance infrared cameras have relatively large power, and generally use 220V-powered cameras with built-in high-quality transformers and fans.
4 to use high-quality infrared light, to prevent the excessive power of the infrared lamp glare or whitening phenomenon; resulting in the image is not clear or gray sense of monstrous; pay attention to the infrared light angle and distance, but also pay attention to its life;
5 To prevent astigmatism and excessive collection of light, astigmatism is prone to whiteness, and the collection of light is prone to flashlight phenomenon.
　 First, the infrared camera current lack causes the snow point to produce some outdoor short distance with centralized power supply 12V is very convenient, but if it is a long distance, it should not use the switch power original concentrated 12V power supply; because one is long-range infrared light heat, 12V power supply instability may lead to insufficient power; and all without built-in heat sink device is prone to burnout under unstable current conditions; second, current decay speed may cause infrared light to fail to work properly, and the CCD illumination is relatively high. I don't get the auxiliary light of the infrared lamp, so the snow flutters.
Second, the 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 It is because they can use different millimeter-size lenses with the same type of lamp. The disadvantage is that people always feel that the angle and distance between the lamp and the lens are not suitable. When the angle is not suitable, flashlight phenomenon or narrow electric phenomenon will easily occur; when the distance When you don't 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 blemish, fluttering in the near place; and, poor quality infrared light In addition to decoration, the more lights there are, the more problems there are, the more concentrated the lights, the greater the amount of heat, and the easier it is to burn.
Third, handicraft issues
When many people do it by hand, the infrared light is not concentrated, astigmatism; scattered light leads to light everywhere, but a gray phenomenon; the infrared light front end of the cotton file is not tight, concentrated infrared red light so a vast phenomenon.
Fourth, the built-in is a poor infrared camera, high illumination, 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 The poor camera built-in, this kind of camera in the case of insufficient light in the infrared light, in order to mention more bright, so artificially increase the gain sensitivity of the CCD, with us on the hard disk recorder to adjust the high brightness, is likely to appear snow phenomenon of.
Fifth, the circuit design is irrational; we produce infrared cameras, not just to install infrared light directly into the camera and then on the line, but to be installed before the redesign and aging of its camera circuit. 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 lamp being subject to unstable current and heat, so that the inferior infrared light can not work normally.
Sixth, another possibility is that in the case of outdoor dust, especially in the wild, it is possible that the infrared light in the camera shoots tiny particles that are invisible to the naked eye. In the daytime, the infrared light does not When turned on, the inner eye and the camera do not feel obvious; this is the environment.
In summary, there are many reasons for having more raw snow flakes, but the method is always more difficult than that. If only the real reasons are found, the solution is much simpler. As long as you are willing to spend the cost, take the time:
First, the use of high-stability transformers to solve the problem of current shortage; use a multimeter to test the voltage and current size to ensure the normal operation of infrared light;
Second, the use of high-quality infrared light; this is equally important, infrared light is not good, even the best current is not useful;
Third, replace the poor camera inside. It is possible that the camera's illumination is extremely high, and in the case of low outdoor brightness, snow is easily presented; a black-and-white camera or a color-to-black and white color camera is used;
Fourth, the use of double filter or dual glass structure, to improve the infrared light intake at night and the effective impact of water mist into the lens;
Infrared cameras need to solve the following difficulties:
1 After installing the infrared lamp, it is necessary to re-set the circuit and aging; pay attention to manual issues, pay attention to the problem of infrared light spotlight; this requires the installation staff have a considerable sense of responsibility and patience;
2 The built-in camera requires a minimum of 0.1 illuminance, otherwise it is prone to snowflake; this requires the manufacturer to have the necessary investment and determination to deal with it carefully;
3 Infrared cameras with long-distance infrared cameras have relatively large power, and generally use 220V-powered cameras with built-in high-quality transformers and fans.
4 to use high-quality infrared light, to prevent the excessive power of the infrared lamp glare or whitening phenomenon; resulting in the image is not clear or gray sense of monstrous; pay attention to the infrared light angle and distance, but also pay attention to its life;
5 To prevent astigmatism and excessive collection of light, astigmatism is prone to whiteness, and the collection of light is prone to flashlight phenomenon.
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