Patent ID: 11858443
Assignee: HYUNDAI MOBIS CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method of detecting whether a pulse width modulated (PWM) signal transmitted from an airbag controller to a vehicle component controller is normal, the method comprising:
counting high values and low values of the PWM signal by detecting a number of high values and a number of low values separately during a particular period of the PWM signal;
integrating the high values and the low values of the PWM signal;
comparing count results of the high values and the low values to first comparison values, and comparing integration results of the high values and the low values to second comparison values; and
detecting whether the PWM signal is normal by separately deriving diagnosis results according to comparisons with the count results and diagnosis results according to comparisons with the integration results.