How to deal with electromagnetic interference in the design of electronic welding harness processing?

How to deal with electromagnetic interference in the design of electronic welding harness processing? Automotive electronics are suitable for vehicles with a constantly changing driving environment. The complexity and variability of electromagnetic energy in the environment means that the system is subject to a wide range of sources of electromagnetic interference. Automotive electronics soldering harness processing is spread throughout the entire vehicle, and is the main source of electromagnetic interference in the vehicle. And itself is often subject to electromagnetic anti-interference, so automotive electronic welding harness processing how to deal with electromagnetic interference is particularly important.

With the continuous development of automotive electronic control technology, the number of automotive electronic equipment has increased greatly, the working frequency is gradually increased, the power gradually increased, making the automotive working environment is filled with electromagnetic waves, resulting in electromagnetic radiation is increasingly prominent. Electronic welding harness processing interference problems, may affect the normal operation of electronic equipment. If it works normally, it will damage the corresponding electrical components. Therefore, the electromagnetic compatibility performance of automotive electronic equipment is receiving more and more attention, and there is an urgent need for electronic welding harness processing to widely apply the electromagnetic improvement technology of automotive electronic equipment. With many years of automotive electronic welding harness processing processing experience, generally take the following measures: reduce the area of electronic welding harness processing interference: electronic welding harness processing should be designed to have the minimum length, minimum impedance and minimum loop area, better use of stranded and other small loop area of power supply a pair of ways. Increase the distance from the equipment to the source of interference: in the case of interference with the layout of the equipment remains unchanged, modify the installation location of sensitive components to increase the distance to the source of interference. Shield the interference source equipment and related wiring harness: electronic control system used in the electronic control unit should be encapsulated in a shielded enclosure. Reasonable planning of electronic welding harness processing: wire harness arrangement so that low-power sensitive circuits near the signal source, high-power interference circuits near the load, low-power circuits and high-power circuits as far as possible to separate, in order to reduce the inductive interference between the wire harness and radiated interference. Increase harness filtering: for longer electronic welding harness processing, in order to reduce conducted and radiated interference, the harness should increase filtering, and insert the appropriate ferrite ring is more convenient. Improve equipment grounding: Good grounding arrangements and improved ground splicing can reduce high frequency impedance. The grounding of automotive electronic equipment is primarily a shield that connects the body to the wiring harness. In addition, electromagnetic interference in automotive systems comes from external sources and from the body. External interference is the interference when the car encounters various external electromagnetic environments during traveling, and the electrostatic interference of the car body is related to the car and the external environment. These two kinds of electromagnetic interference are also often found in the daily operation of the car and deserve attention.

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