Analysis of the Vehicle EMC Interference from A2B Automotive Audio Bus
In the vehicle test of electrical disturbances from narrowband radiated electromagnetic energy,the audio of the vehicle was disturbed.After analysis of the test method,dismantle the test vehicle,and the EMC simulation analysis of the vehicle audio bus,it was confirmed that there are differences in the immunity of Automotive Audio Bus(A2B),which is due to different manufacturing processes.And the factors that affect the immunity of the audio bus is the number of the A2B connector,the unclosed length and no-twisted distance of the audio bus.By optimizing the wire harness process of A2B,the interference problem of the vehicle A2B is solved during the vehicle development process,and the overall immunity of A2B is improved.
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