High-definition network cameras are security monitoring equipment. If they lack a waterproof design, water will enter inside, the circuit board will be burned, and eventually they will not be able to operate normally. Therefore, after waterproof testing of each component of the high-definition network camera, the overall waterproof test is also essential.This time, Hairis Technology will bring you a high-definition network camera waterproof testing solution. We hope that our case can inspire manufacturers to improve the waterproofness of testing equipment and waterproofing processes.Below is the content related to the solution.
1. Analysis of the appearance and detection difficulties of this high-definition network camera
The picture above is the high-definition network camera that Hairis Technology is testing this time. We can see that the camera is completely sealed.
It has a box-like shape, but the overall design has edges and grooves.This design, coupled with the inconvenience caused by the larger body of the camera, is currently a problem for waterproof detection of cameras.
There is also a length of wire on the external connection. Since the wire part of the high-definition network camera is not sealed, we need to seal the wire part during detection. This is also a major difficulty in the detection plan, which involves eliminating the impact of the wire on the overall waterproof detection of the camera.
There are two transparent lenses under the camera. The mirror surface and the equipment surface are almost on the same plane. It is easy to damage the mirror surface during inspection. Hairis Technology also needs to take this aspect into consideration during inspection.
In addition, the metal sheet on the front is fixed by screws, and the airtightness of the screw opening will also affect the waterproof performance of the HD network camera. We must pay special attention to this part during inspection.
2. How did the high-definition network camera get water?
In terms of waterproofing, HD network cameras, in addition to preventing surface rain, the most important thing is to prevent water mist inside the camera.The temperature of the camera changes greatly when it is working, and fog is prone to occur, especially in seasons with heavy rainfall. The formation of fog and frost is caused by the condensation of saturated water vapor in the air. Depending on the strength of the low-temperature environment, it condenses into frost and fog respectively.The camera works in an environment with high humidity and dust. The window glass of the protective cover is prone to dirt, causing the light entering the camera to be blocked, causing the camera to be unable to capture objects clearly, directly affecting the monitoring effect, and in severe cases, it can directly cause equipment paralysis.
3. Sealing process of high-definition network camera
There are certain technical problems in the sealing of surveillance cameras, such as the design of the casing, joints and screw interfaces, which are prone to leakage.Generally, waterproofing is enhanced by adding a waterproof rubber sleeve, adding a drain pad at the interface, applying waterproof glue at the wiring screw port, and using high-quality silicone materials for waterproofing.
4. Waterproof testing requirements for high-definition network cameras
1. High-definition network cameras are easily damaged equipment. We must not damage the camera appearance, lens, etc. during inspection.
2. During inspection, you should also pay attention to dust prevention to avoid excessive dust on the body and lens, which will affect the appearance.
3. Because it contains wires, it is necessary to reduce the influence of wires on the overall waterproof detection of high-definition network cameras.
4. The irregular shape and overall sealing characteristics of high-definition network cameras require indirect inspection.
5. How to solve the problem of waterproof testing of high-definition network cameras?
Hairuisi Technology divides the tester into three parts: tester, air source, and tooling.Because the tester, air source, and tooling are self-contained, molds and corresponding tooling can be equipped according to different product shapes or details to meet the needs for testing different products.During the inspection, Hairis Technology will customize a specific tooling for the high-definition network camera to assist in indirect waterproof inspection without damaging the equipment.After the upper and lower molds are closed, a closed inspection space will be formed. On the one hand, indirect inspection is achieved, and on the other hand, the camera is protected from unnecessary damage during inspection.Below is a close-up of the tooling and mold.
During the inspection, put the high-definition network camera that needs to be inspected into the mold. The mold slot and the sealing ring slot are just right for the wire part. Both the size and pressure must be accurate to avoid air leakage in this part of the wire during inspection and reduce their impact on the camera's waterproof detection.
After the tester is started, the upper and lower molds will be closed, and then the air source will inflate the mold of the high-definition network camera. The precision pressure sensor of the high-definition network camera waterproof detection equipment senses the change in air pressure in the mold, and will transmit the value of the air pressure change to the detection system and display it. Finally, after a series of calculations, the gas leakage value can be obtained. Based on the leakage value, the high-definition network camera waterproof performance and IP waterproof level are detected. The following is a detailed picture of the detection.
The waterproof test of this high-definition network camera from Hairis Technology has been put into production line testing. The equipment operates stably and has high accuracy, and is favored by many users.
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