Abnormal sound diagnostic system

Patent metadata

Field	Value
Publication number	US-12424036-B2
Application number	US-202318234941-A
Country	US
Kind code	B2
Filing date	Aug 17, 2023
Priority date	Sep 27, 2022
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

The abnormal sound diagnostic system of the present disclosure includes an abnormal sound diagnostic system including a diagnostic device for diagnosing abnormal sound generated in a vehicle based on data of sound emitted from a vehicle and inquiry information about abnormal sound generated in a vehicle, the abnormal sound diagnostic system including an calculation processing unit for acquiring a spectrogram indicating a relationship between time, frequency, and sound pressure from the sound data, a voice recognition unit for extracting a vocal time zone that is a time zone including a human voice from the sound data by speech recognition, a display unit for displaying a spectrogram, and a display control unit for causing the display unit to display a spectrogram so that the vocal time zone extracted by the voice recognition unit is visually distinguished from a time zone that does not include a human voice.

First claim

What is claimed is:

1. An abnormal sound diagnostic system including a diagnostic device configured to diagnose an abnormal sound that is generated in a vehicle, based on data of a sound emitted from the vehicle and inquiry information about the abnormal sound that is generated in the vehicle, the abnormal sound diagnostic system comprising:
a mobile terminal configured to:
acquire a spectrogram showing a relationship between time, frequency, and sound pressure from the data of the sound;
extract an utterance time zone that is a time zone in which a human voice is included, from the data of the sound by voice recognition;
a display panel configured to display the spectrogram;
the mobile terminal configured to cause the display panel to display the spectrogram such that the utterance time zone extracted is visually distinguished from a time zone in which the human voice is not included by graying out a first utterance time zone representing a time zone from a first time to a second time, and a second utterance time zone representing a time zone from a third time to a fourth time, and displaying the grayed out first utterance time and the second utterance time zone that are extracted;
the mobile terminal configured to cause the display panel to display a confirmation message whether a diagnosis range is available;
the mobile terminal configured determine whether the diagnosis range has been adjusted;
the mobile terminal configured to acquire the diagnosis range that is adjusted, and cause the display panel to display the spectrogram including the diagnosis range that is adjusted;
the mobile terminal configured to identify an occurrence of a new abnormal sound, and re-learn the new abnormal sound via machine learning;
the mobile terminal configured to display and receive input of the inquiry information including vehicle identification information, commission, occurrence data and time, occurrence frequency, occurrence location of the abnormal sound, a type of sound, a physical quantity that changes when the vehicle travels, selection items selected during driving of the vehicle; and
the mobile terminal configured to transmit, in response to confirmation of the inquiry information, a diagnosis result that includes a cause of the abnormal noise generated in the vehicle, a component that is a generation source of the abnormal noise, and a measure for eliminating the abnormal noise.

2. The abnormal sound diagnostic system according to claim 1 , wherein the mobile terminal makes a range corresponding to the utterance time zone of the spectrogram unselectable on the display panel.

3. The abnormal sound diagnostic system according to claim 1 , wherein when two of the utterance time zones are extracted by the mobile terminal, the mobile terminal causes the display panel to display a range between the two of the utterance time zones in the spectrogram as the diagnosis range of the diagnostic device.

4. The abnormal sound diagnostic system according to claim 3 , wherein when one or three or more of the utterance time zones are extracted by the mobile terminal, the mobile terminal causes the display panel to display an instruction for selecting the diagnosis range of the diagnostic device from a range corresponding to a time zone other than the utterance time zone of the spectrogram.

5. The abnormal sound diagnostic system according to claim 1 , further comprising the mobile terminal that is configured to: acquire the data of the sound, acquire the inquiry information, and exchange information with the diagnostic device by communication.

6. The abnormal sound diagnostic system according to claim 1 , wherein the physical quantity comprises a vehicle speed, an engine speed, an ON/OFF time of a brake ramp switch, a steering angle, a hybrid electric vehicle, and a battery electric vehicle high-voltage battery SOC.

7. The abnormal sound diagnostic system according to claim 5 , wherein the selection items comprise a shift position, a traveling mode, and an operating state of an auxiliary machine.

Assignees

• Toyota Motor Co Ltd

Inventors

• Ueda Yu

Classifications

• G07C5/0808

  Diagnosing performance data (testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005) · CPC title

• G01M13/028 Primary

  Acoustic or vibration analysis · CPC title

• G07C5/0825 Primary

  using optical means · CPC title