Apparatus and method for diagnosing failure of microphone of vehicle
AssigneeHyundai Mobis Co., Ltd.
InventorJae Young Lee
Life of this patent
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Abstract
An apparatus and method for diagnosing a microphone of a vehicle reduce an interior noise by applying an active road surface noise reduction method, learn sounds collected using a plurality of microphones to generate a simulated signal for a specific microphone, and detect a failure of the specific microphone by comparing the simulated signal with an actually measured sound of the specific microphone so that noise reduction efficiency can be improved by distinguishing a noise from an interior sound, a failed microphone can be accurately detected using the sounds of the plurality of microphones, the spread of an unnecessary noise can be prevented by diagnosing a failure of the specific microphone, and a more comfortable and stable interior environment can be provided to occupants.
Claims20
An apparatus for diagnosing a microphone of a vehicle comprising (1) a plurality of microphones including a first microphone and (2) a plurality of speakers, the apparatus comprising:
- a processor;
- and
- a non-transitory computer-readable medium storing executable instructions which, when executed by the processor, cause the processor alone or in combination with other processors to control the apparatus to perform:
- processing a sound captured by each of the microphones to generate a digital signal from each of the microphones to provide a plurality of digital signals representing the sound;
- generating a simulated signal for the first microphone using a learning process based on the digital signals of the plurality of microphones excluding the digital signal of the first microphone;
- comparing a measured signal of the first microphone with the simulated signal to calculate a loss value of the first microphone;
- and
- determining, based on the calculated loss value, whether a failure has occurred to the first microphone.
A method of diagnosing a microphone of a vehicle, the vehicle comprising (1) a plurality of microphones including a first microphone and (2) a plurality of speakers, the method comprising:
- processing a sound captured by each of the microphones to generate a digital signal from each of the microphones to provide a plurality of digital signals representing the sound;
- generating a simulated signal for the first microphone using a learning process based on the digital signals of the plurality of microphones excluding the digital signal of the first microphone;
- comparing a measured signal of the first microphone with the simulated signal to calculate a loss value of the first microphone;
- and
- determining, based on the calculated loss value, whether a failure has occurred to the first microphone.
Dependencies are inferred from the claim text.