In the after-sales work, many customers and friends often hear the user calls, reflecting the camera they use in addition to the usual whitening, glare, there are still a lot of snow point, at night, when the snow is generally. At the beginning, we also found it incredible that a special trip to the low-grade infrared electronic security market took a few brands and tried it. Sure enough, the effect of the day was still in hand. Once in the evening, the snow fluttered. So, we did a variety of experiments, tried to change the infrared light and circuit board, also tried to change the CCD, have also been to different places to experiment, and later, Zhejiang Red Apple electronic summary snow point has the following reasons:
First, the lack of current causes generation <br> <br> snow point number with a short distance outside the power supply 12V is convenient concentration, but it should not be used if it is a long distance to centralized switching power supply 12V. 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.
Second, the quality of infrared light is poor, infrared light angle and infrared distance with the lens does not match the snow
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;
Third, handicrafts problem <br> <br> often manually mounted, infrared light is not focused, 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.
Fourth, the built-in camera is poor, high illuminance <br> <br> many factories in order to obtain a brighter image of the auxiliary light under the same premise of infrared light, artificially increase the sensitivity of the CCD. 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 unreasonable <br> <br> We produce infrared cameras, infrared light is not just mounted directly to the camera inside the line, but to before loading on its redesigned circuit cameras and aging treatment. 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 could be the next in the outdoor environment more dust <br> <br> especially in the field, there may be cameras in the infrared light can not watch the meat of small particles shot out, this infrared light in the daytime Without the opening, the naked eye and the camera do not feel obvious. This phenomenon is caused by the environment.
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 is much simpler to solve, as long as you are willing to spend the cost and spend time.
Ø 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.
Ø Use high quality infrared light. This is equally important. IR lamps are not good and no matter how good the current is.
Ø 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.
Ø Use double filter or double glass structure to increase the intake of infrared light at night and avoid water spray affecting the lens.
Infrared camera should pay attention to the following difficulties . After installing infrared light, 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.
v 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.
v The infrared camera of a long-distance camera has a relatively large power. Generally, a 220V-powered camera with built-in high-quality transformers and fans is required. v High-quality infrared lamps must be used to prevent the excessively bright or dazzling phenomenon of the power of the infrared lamp. The image appears unclear or gray, and pay attention to the infrared lamp angle and distance while paying attention to its life.
v To prevent astigmatism and excessive light collection, astigmatism is easy to appear white, and light collection is prone to flashlight phenomenon.
First, the lack of current causes generation <br> <br> snow point number with a short distance outside the power supply 12V is convenient concentration, but it should not be used if it is a long distance to centralized switching power supply 12V. 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.
Second, the quality of infrared light is poor, infrared light angle and infrared distance with the lens does not match the snow
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;
Third, handicrafts problem <br> <br> often manually mounted, infrared light is not focused, 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.
Fourth, the built-in camera is poor, high illuminance <br> <br> many factories in order to obtain a brighter image of the auxiliary light under the same premise of infrared light, artificially increase the sensitivity of the CCD. 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 unreasonable <br> <br> We produce infrared cameras, infrared light is not just mounted directly to the camera inside the line, but to before loading on its redesigned circuit cameras and aging treatment. 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 could be the next in the outdoor environment more dust <br> <br> especially in the field, there may be cameras in the infrared light can not watch the meat of small particles shot out, this infrared light in the daytime Without the opening, the naked eye and the camera do not feel obvious. This phenomenon is caused by the environment.
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 is much simpler to solve, as long as you are willing to spend the cost and spend time.
Ø 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.
Ø Use high quality infrared light. This is equally important. IR lamps are not good and no matter how good the current is.
Ø 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.
Ø Use double filter or double glass structure to increase the intake of infrared light at night and avoid water spray affecting the lens.
Infrared camera should pay attention to the following difficulties . After installing infrared light, 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.
v 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.
v The infrared camera of a long-distance camera has a relatively large power. Generally, a 220V-powered camera with built-in high-quality transformers and fans is required. v High-quality infrared lamps must be used to prevent the excessively bright or dazzling phenomenon of the power of the infrared lamp. The image appears unclear or gray, and pay attention to the infrared lamp angle and distance while paying attention to its life.
v To prevent astigmatism and excessive light collection, astigmatism is easy to appear white, and light collection is prone to flashlight phenomenon.
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