车载冰箱与车载娱乐系统的电磁干扰检测与规避

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中图分类号：U463.6 文献标识码：A 文章编号：1003-8639（2026）02-0085-03

Detection and Avoidance of Electromagnetic Interference Between Vehicle Refrigerators and Vehicle Entertainment Systems

Cai Xin

Jiangsu Provincial InstituteofProduct Quality Supervisionand Inspection,Nanjing 21Ooo7,China

【Abstract】This article takes the electromagnetic radiation source of car refrigerators and car entertainment systems as research objects,analyzes their electromagnetic radiation sensitivity characteristics,clarifies the frequency band distribution characteristics,designs targeted interference detection schemes,obtainscore interference data,and formulates diferentiated avoidance strategies.Onthis basis,acomprehensive avoidance plan for allworking conditions is constructed,which includes hardware protection,software adaptation,and layout processoptimization.Through experimental verification,the method proposed inthisarticlecanefectivelysuppressconductedandradiated interference in the 3OkHz-5GHz frequency band,reduce the signal distortion rate of entertainment systems to within 2.8% , limit the ground resistance to ≤0.5Ω and the shielding effectiveness to ≥ 40dB,and improve the electromagnetic compatibility performance of both types of equipment.

【Key words】vehicle electromagneticcompatibility；interferenceavoidance；optimizationofalloperatingconditions

0 引言

随着车载电子设备集成度的不断提高，车载冰箱及娱乐系统电磁兼容干扰问题日趋严重，存在信号失真、功能异常等安全隐患。（剩余4842字）