Solution for the presence of dirt inside and outside the surveillance camera

When the surveillance camera is in use, it will encounter dirt inside or outside the machine. So, when encountering these problems, how should we solve it smoothly?

If there is dirt inside the surveillance camera, it is actually caused by fog, water vapor, etc., and can be solved by the following ways:

There is fog inside the machine: the formation of fog and frost is caused by the condensation of saturated water vapor in the air, and it is condensed into frost and fog due to the strong and weak cold environment. In the process of working in the infrared camera, especially indoors, fog or frost is often formed on the window glass of the protective cover due to fog or moisture in the stadium, which may cause the camera to be unable to see the object and directly affect the monitoring effect.

The solution to this problem is different. Increase the defrosting circuit, open the vent, fill the nitrogen, add the fan, put the desiccant and so on. The method is different, and the effect is certainly different. Some can solve the problem, and some still can't solve the problem. However, from the most basic point of view, it is necessary to strictly control the cleaning of the materials and try to eliminate the existence of volatiles. For example, the PCB board can not have residual flux, and the shading rubber sleeve is made of high quality silicone material.

Frost and fog appear on the outside of the machine: the camera works in a humid environment, and the window glass of the protective cover is prone to dirt, causing the camera to block the line of sight.

The solution:

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

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, some requirements for housing sealing.

If the infrared waterproof camera is used in the north, there will be a large temperature difference inside and outside the machine, and the front lens will be fogged. Therefore, it is required to have a good seal inside the machine, and the protective cover must have good rainproof water. performance. At this stage, there are certain technical problems in the sealing technology of the mainland technology, such as the design of the outer casing, where the joints and screw joints are mostly leaking places.