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Infrared cameras appear snow at night, mainly due to the following:
First, the quality of the infrared light is poor, the angle of the infrared light and the infrared distance do not match with the lens, resulting in snow drift
Many companies use a variety of lamps to mix and use them in order to facilitate their own purchases and installations. The advantage of this is that they can barely use different millimeter-sized lenses for the same type of lamp. The disadvantage is that people always feel the light angle. It is not suitable for distance and lens. When the angle is not suitable, flashlight phenomenon or narrow electric phenomenon may occur easily. When the distance does not match, for example, if you use a 12MM lens and use a light of 10 to 20 meters, then there will be a gray phenomenon. The distance is blurred and the snow flutters in the vicinity. In addition, inferior infrared lamps, in addition to decoration, the more lights, the more problems; the more concentrated lights, the greater the heat, the easier it is to burn;
Second, handicraft issues
Many manual installations, infrared lights are not concentrated, astigmatism. The scattered light causes light everywhere, a gray phenomenon. The front light of the infrared lamp is not tightly shaded by cotton, so it is a vast phenomenon.
Third, the lack of current causes snow spots
Some outdoor short-distance use of centralized power supply 12V is very convenient, but if it is a long distance, it should not use switching power supply for centralized 12V power supply. Because the long-range infrared lamp generates a large amount of heat, instability of the 12V power supply may result in insufficient power, and all of the devices do not have built-in heat sinks and are prone to burnout when the current is unstable. Second, the current decay speed, may lead to the infrared light did not work properly, in the CCD illumination is relatively high and can not get the infrared light auxiliary light, so the snow fluttering.
Fourth, the built-in is a poor camera with high illumination.
Many factories artificially increase the sensitivity of the CCD in order to obtain a brighter image with the same infrared light auxiliary light. Because many manufacturers use a very low-quality camera built-in for price competition. This kind of camera is brighter when the infrared light fills up, so we artificially increase the gain sensitivity of the CCD and adjust it up on the DVR. Like high brightness, it is extremely prone to snowflake phenomenon.
Fifth, the circuit design is irrational
We produce infrared cameras, not just to install the infrared light directly into the camera, but to redesign and age the camera circuit before mounting it. Many small-scale processing plants on the market use inexpensive electronic components, buy inexpensive infrared lamps, and directly solder them with soldering iron. There is no redesign or aging of the circuit. In addition, some factories that make low-end products, in order to save money, remove the control circuit control board or integrate it with the light board, which easily leads to infrared lamps that are subject to unstable currents and heat, making the infrared light even worse. Can not work normally.
Sixth, it may be in a dusty environment
Especially in the wild, it is possible that the infrared light in the camera shoots fine particles that are invisible to the naked eye. This phenomenon is not noticeable to the naked eye and the camera during the day when the infrared light does not turn on. This phenomenon is the environment. As it happens.
There are many reasons for producing more snow, but the solution is always more difficult than it is. As long as the real reason is found, it will be much simpler to solve as long as you are willing to spend the cost and spend time.
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. Use high quality infrared lamps. This is equally important. IR lamps are not good and no matter how good the current is.
3, replace the poor camera inside. The illuminance of the camera may be extremely high, and in the case of low outdoor light brightness, snow is easily presented, so a black-and-white camera or a color-to-black camera must be used.
4, using double filter or double glass structure, improve the infrared light intake at night and avoid water spray lens.
Infrared camera to solve the following difficulties
1. After installing the infrared lamp, it is necessary to reset the circuit and aging. Pay attention to manual installation process issues, attention should be paid to the problem of infrared light spotlight, which requires the installation staff have a considerable sense of responsibility and patience.
2. The built-in camera must have 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. The infrared camera of a long-distance camera has a relatively large power, and a 220V-powered camera with a built-in high-quality transformer and fan is generally used.
4, to use high-quality infrared light, to prevent the excessive power of the infrared lamp dazzling or whitening phenomenon, in order to avoid the image is not clear or gray sense of Mongolia, pay attention to the infrared light angle and distance at the same time, pay attention to its life.
5, to prevent astigmatism and excessive collection of light, astigmatism is prone to white, and the light is easy to flashlight phenomenon.
First, the quality of the infrared light is poor, the angle of the infrared light and the infrared distance do not match with the lens, resulting in snow drift
Many companies use a variety of lamps to mix and use them in order to facilitate their own purchases and installations. The advantage of this is that they can barely use different millimeter-sized lenses for the same type of lamp. The disadvantage is that people always feel the light angle. It is not suitable for distance and lens. When the angle is not suitable, flashlight phenomenon or narrow electric phenomenon may occur easily. When the distance does not match, for example, if you use a 12MM lens and use a light of 10 to 20 meters, then there will be a gray phenomenon. The distance is blurred and the snow flutters in the vicinity. In addition, inferior infrared lamps, in addition to decoration, the more lights, the more problems; the more concentrated lights, the greater the heat, the easier it is to burn;
Second, handicraft issues
Many manual installations, infrared lights are not concentrated, astigmatism. The scattered light causes light everywhere, a gray phenomenon. The front light of the infrared lamp is not tightly shaded by cotton, so it is a vast phenomenon.
Third, the lack of current causes snow spots
Some outdoor short-distance use of centralized power supply 12V is very convenient, but if it is a long distance, it should not use switching power supply for centralized 12V power supply. Because the long-range infrared lamp generates a large amount of heat, instability of the 12V power supply may result in insufficient power, and all of the devices do not have built-in heat sinks and are prone to burnout when the current is unstable. Second, the current decay speed, may lead to the infrared light did not work properly, in the CCD illumination is relatively high and can not get the infrared light auxiliary light, so the snow fluttering.
Fourth, the built-in is a poor camera with high illumination.
Many factories artificially increase the sensitivity of the CCD in order to obtain a brighter image with the same infrared light auxiliary light. Because many manufacturers use a very low-quality camera built-in for price competition. This kind of camera is brighter when the infrared light fills up, so we artificially increase the gain sensitivity of the CCD and adjust it up on the DVR. Like high brightness, it is extremely prone to snowflake phenomenon.
Fifth, the circuit design is irrational
We produce infrared cameras, not just to install the infrared light directly into the camera, but to redesign and age the camera circuit before mounting it. Many small-scale processing plants on the market use inexpensive electronic components, buy inexpensive infrared lamps, and directly solder them with soldering iron. There is no redesign or aging of the circuit. In addition, some factories that make low-end products, in order to save money, remove the control circuit control board or integrate it with the light board, which easily leads to infrared lamps that are subject to unstable currents and heat, making the infrared light even worse. Can not work normally.
Sixth, it may be in a dusty environment
Especially in the wild, it is possible that the infrared light in the camera shoots fine particles that are invisible to the naked eye. This phenomenon is not noticeable to the naked eye and the camera during the day when the infrared light does not turn on. This phenomenon is the environment. As it happens.
There are many reasons for producing more snow, but the solution is always more difficult than it is. As long as the real reason is found, it will be much simpler to solve as long as you are willing to spend the cost and spend time.
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. Use high quality infrared lamps. This is equally important. IR lamps are not good and no matter how good the current is.
3, replace the poor camera inside. The illuminance of the camera may be extremely high, and in the case of low outdoor light brightness, snow is easily presented, so a black-and-white camera or a color-to-black camera must be used.
4, using double filter or double glass structure, improve the infrared light intake at night and avoid water spray lens.
Infrared camera to solve the following difficulties
1. After installing the infrared lamp, it is necessary to reset the circuit and aging. Pay attention to manual installation process issues, attention should be paid to the problem of infrared light spotlight, which requires the installation staff have a considerable sense of responsibility and patience.
2. The built-in camera must have 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. The infrared camera of a long-distance camera has a relatively large power, and a 220V-powered camera with a built-in high-quality transformer and fan is generally used.
4, to use high-quality infrared light, to prevent the excessive power of the infrared lamp dazzling or whitening phenomenon, in order to avoid the image is not clear or gray sense of Mongolia, pay attention to the infrared light angle and distance at the same time, pay attention to its life.
5, to prevent astigmatism and excessive collection of light, astigmatism is prone to white, and the light is easy to flashlight phenomenon.
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