Design of Electromagnetic Compatibility in Electronic Devices Based on Grounding and Shielding

Modern electronic devices commonly operate in a complicated electromagnetic environment.As electromagnetic interference frequently results in failures or even accidents of electronic devices,the design of electromagnetic compatibility of electronic systems is explored in this paper.First,the sources of electromagnetic interference are analyzed,the design idea of electromagnetic compatibility is elaborated and the design mechanism of anti-electromagnetic interference(anti-EMI)is researched.Then,with the common faults appearing in electronic devices in mind,the technical countermeasures of anti-electromagnetic interference are put forward.Taking as an example the specific measures of electromagnetic compatibility design adopted by a certain control device,the paper demonstrates that the electromagnetic compatibility design has satisfactory effect of anti-EMI and has significantly improved the safety and reliability of the control device.Engineering practice shows that the most important technical measures of anti-EMI are good grounding and shielding and reasonable wiring of the system.