In fact, fog and water vapor problems can be solved by the following ways :
Fog in the interior of the machine: The formation of fog and frost is caused by the condensation of saturated steam in the air, and is condensed into frost and fog due to the strong or weak cold environment. During the working process of the infrared camera, especially the indoor camera often causes fog or frost on the shield window glass due to fog or water vapor in the stadium, resulting in the camera being unable to see the object and directly affecting the monitoring effect.
The solution to this problem is also different for each family. Increase the defrosting circuit, open vent holes, charge nitrogen, add fans, put desiccants and so on. The method is not the same, and the effect is certainly not the same. Some can solve the problem, and some still cannot solve the problem. However, from the most basic point of view, it is necessary to strictly control the cleaning of materials and try to prevent the presence of volatiles. For example, the PCB board cannot have residual flux, and the light-shielding rubber sleeve is made of high-quality silicone material.
Frost and fog appear on the outside of the machine: The camera works in a high-humidity environment. The window glass of the protective cover is prone to dirt, causing the camera's line of sight to block.
Solution: 1. Increase the wiper on the protective cover and clean the glass by controlling the wiper. 2. Use invisible wiper window glass. Compared with ordinary window glass, the invisible wiper window glass has functions of repelling water, dust and the like. Finally, there are some requirements for shell seals for high humidity conditions.
If the infrared waterproof camera is used in the north, there will be a large temperature difference between the inside and outside of the camera, and the front lens will be atomized. Therefore, it is required that the machine must have a good seal, and the protective cover must also have good rainwater protection. performance. At this stage, there are certain technical problems in the sealing technology of the mainland, such as the design of the housing, and in places such as joints and screw interfaces, where leakage occurs.
Fog in the interior of the machine: The formation of fog and frost is caused by the condensation of saturated steam in the air, and is condensed into frost and fog due to the strong or weak cold environment. During the working process of the infrared camera, especially the indoor camera often causes fog or frost on the shield window glass due to fog or water vapor in the stadium, resulting in the camera being unable to see the object and directly affecting the monitoring effect.
The solution to this problem is also different for each family. Increase the defrosting circuit, open vent holes, charge nitrogen, add fans, put desiccants and so on. The method is not the same, and the effect is certainly not the same. Some can solve the problem, and some still cannot solve the problem. However, from the most basic point of view, it is necessary to strictly control the cleaning of materials and try to prevent the presence of volatiles. For example, the PCB board cannot have residual flux, and the light-shielding rubber sleeve is made of high-quality silicone material.
Frost and fog appear on the outside of the machine: The camera works in a high-humidity environment. The window glass of the protective cover is prone to dirt, causing the camera's line of sight to block.
Solution: 1. Increase the wiper on the protective cover and clean the glass by controlling the wiper. 2. Use invisible wiper window glass. Compared with ordinary window glass, the invisible wiper window glass has functions of repelling water, dust and the like. Finally, there are some requirements for shell seals for high humidity conditions.
If the infrared waterproof camera is used in the north, there will be a large temperature difference between the inside and outside of the camera, and the front lens will be atomized. Therefore, it is required that the machine must have a good seal, and the protective cover must also have good rainwater protection. performance. At this stage, there are certain technical problems in the sealing technology of the mainland, such as the design of the housing, and in places such as joints and screw interfaces, where leakage occurs.
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