In recent years, with the development of science and technology and the wide application of electronic products, the topic of electromagnetic interference (EMI) and radio frequency interference (RFI) has attracted great attention. As electromagnetic wave is an invisible wave phenomenon, can not be directly perceived, how to improve the anti-interference ability of the product? In view of this problem, in the wiring harness manufacturing process, what methods need our attention?

First, understand the nature of interference

To improve the anti-interference ability of products, it is necessary to understand the nature of electromagnetic interference. EMI and RFI interference mainly occur in the interaction of electromagnetic fields, the current and voltage changes in electronic components cause changes in electromagnetic fields, and then produce a certain interference signal in the surrounding space. These signals may cause different degrees of failure or damage to other electronic equipment or electronic components. Therefore, when designing the wiring harness and circuit board, it is necessary to consider the coupling mode and distance of the device to reduce the strength of the interference signal. In order to enhance the anti-interference ability of the product.

Second, choose high-quality materials

The different material properties in the wire harness will affect its electrical properties and anti-interference ability. Therefore, in the wiring harness manufacturing process, the selection of high-quality materials is crucial. Especially for electromagnetic compatibility issues, more attention needs to be paid to the choice of materials. Quality insulation can play an important role in anti-interference. For example, polyolefin materials have the characteristics of low dielectric loss, which improves the anti-interference performance of the wire harness.

Third, reasonable layout and laying

In the manufacture of wire harnesses, the length of wire harnesses and the direction of laying them both affect the ability to counter interference. Therefore, when designing the wiring harness, it is necessary to consider the number of characters and the shape of the wiring harness, so that the direction of the wiring harness is optimized. At the same time, the wiring harness is placed reasonably to reduce the strength of the interference signal and strengthen the anti-interference ability of the product through the coupling mode and distance of the equipment.

Fourth, shielding processing

In wire harness manufacturing, shielding treatment is also an important method to improve anti-interference ability. On the one hand, the grounding choke should be added to the core magnet and connected to a longer ground wire. This increases the resistance of the harness to EMI and RFI. On the other hand, various shielding materials, such as tin foil and copper mesh, can be laid around the wire harness to prevent interference electromagnetic waves from entering the wire harness. This method can effectively reduce the amount of interference electromagnetic wave and improve the EMI and RFI anti-interference ability of the product.

In general, in the wiring harness manufacturing process, improving the anti-interference ability of the product needs to pay attention to the choice of materials, reasonable layout and laying, shielding and other methods, so as to reduce the strength of interference signals and combat EMI and RFI interference. In this way, we can maximize the performance of the product and bring more convenience to our life and work.