Solution to prevent fog from blocking the lens of infrared waterproof camera

    Speaking of venue monitoring, there are many benefits. It can not only detect hidden dangers in time and block potential security threats, but also save personnel costs and energy. Therefore, more and more newly built sports venues are taking video surveillance as an important part of venue construction. As a result, it also brings a series of problems. Recently, a friend asked about installing monitoring equipment in the swimming pool. Because the venue is relatively humid, there is often fog on the monitoring camera, which affects the monitoring quality. Shenzhen Penganshi Technology Co., Ltd. has found through years of experience that problems such as fog and water vapor can be solved in the following ways.

    In the first case, fog appears inside the machine

    Fog and frost are formed when saturated water vapor in the air condenses when it encounters cold. The strong and weak cold environments condense into frost and fog respectively. During the operation of infrared cameras, especially indoor cameras, fog or frost often forms on the protective cover window glass due to fog or water vapor in the venue, which makes the camera unable to see objects clearly, directly affecting the monitoring effect.

    Different companies have different solutions to this problem. They add defrosting circuits, open vents, fill with nitrogen, add fans, add desiccant, etc. Different methods will produce different results. Some can solve the problem, while others cannot. However, from the most basic perspective, it is necessary to strictly control the cleaning of materials and try to eliminate the presence of volatile substances. For example, there should be no residual flux on the PCB board, and the light-shielding rubber sleeve should be made of high-quality silicone material.

    In the second case, frost and fog appear on the outside of the machine.

    When the camera works in an environment with high humidity, dirt easily appears on the window glass of the protective cover, which blocks the camera's view.

    The solution:

    1. Add wipers to the protective cover and clean the glass by controlling the wipers.

    2. Use invisible wiper window glass. Compared with ordinary window glass, invisible wiper window glass has the function of repelling water and dust. Finally, for high humidity conditions, there are some requirements for the sealing of the shell. If the infrared waterproof camera is used in the north, there will be a large temperature difference between the inside and outside of the machine, and the front lens will be fogged. Therefore, the machine must have good sealing performance, and the protective cover must also have good rainproof performance.

    At present, there are certain technical problems with mainland technology in terms of sealing. For example, the design of the outer shell and the joints and screw interfaces are often where water leaks occur.

    How to make the sealing better? The basic solution is this:

    1. Add waterproof rubber sleeve and water pad at the interface to play a waterproof role, the effect is ideal.

    2. Apply waterproof glue to the connection screw holes to enhance waterproofness.

    3. The infrared waterproof camera uses an aluminum alloy shell to improve the accuracy of the interface, and is bonded with high-quality silicone material, the effect is also relatively ideal.