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Abnormal noise determination apparatus and method

一种异常声音、判定装置的技术，应用在测量装置、扩音器、传声器等方向，能够解决未考虑异常声音方向、难异常声音判定等问题

Active Publication Date: 2021-09-28
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the device described in Patent Document 1 does not consider the direction in which the abnormal sound is generated, but only determines the presence or absence of abnormal sound based on the sound pressure level, so it is difficult to determine the abnormal sound with high accuracy.

Method used

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  • Abnormal noise determination apparatus and method
  • Abnormal noise determination apparatus and method
  • Abnormal noise determination apparatus and method

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Embodiment Construction

[0017] Below, refer to Figure 1 to Figure 8 Embodiments of the present invention will be described. An abnormal sound determination device according to an embodiment of the present invention is a device for determining whether an abnormal sound is generated while a vehicle is running. For example, when a finished vehicle produced in a factory leaves the factory, it is necessary to have an inspection process of actually driving each finished vehicle to check whether abnormal noise is generated. However, in the inspection step, if the presence or absence of abnormal sound is determined based on the auditory sense of the worker who rides on the finished vehicle, the judgment result may vary widely due to the involvement of the subjective consciousness of the worker.

[0018] Therefore, in order to improve the determination accuracy of the presence or absence of abnormal sounds, it is preferable to obtain abnormal sound data that may be generated when the vehicle is running, and...

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Abstract

The invention provides an abnormal noise determination apparatus including a microphone array (13) disposed inside a vehicle and having a plurality of microphones (131-138); a first data acquisition unit (211) configured to acquire an abnormal noise data including an information on a strength and a generation direction of the abnormal noise collected by the microphone array (13); a second data acquisition unit (221) configured to acquire a traveling noise data including an information on a strength and a generation direction of a traveling noise collected by the microphone array (13) during traveling of the vehicle; and a determination unit (23) determining whether the abnormal noise is included in the traveling noise of the vehicle, based on the abnormal noise data acquired by the first data acquisition unit (211) and the traveling noise data acquired by the second data acquisition unit (221).

Description

technical field [0001] The invention relates to an abnormal sound judging device and method for judging whether there is abnormal sound when a vehicle is running. Background technique [0002] As such a device, there is conventionally known a device that performs frequency analysis on sound data acquired while the vehicle is running, calculates waveforms of frequencies and sound pressure levels within a predetermined frequency range, and uses the waveform data to determine the presence or absence of abnormal sounds. This device is described in Patent Document 1, for example. [0003] However, the device described in Patent Document 1 does not consider the direction in which the abnormal sound occurs, but only determines the presence or absence of the abnormal sound based on the sound pressure level, so it is difficult to determine the abnormal sound with high accuracy. [0004] prior art literature [0005] Patent Document 1: Japanese Patent No. 6089948 (JP6089948B). Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007G01H3/00
CPCG01M17/007G01H3/00H04R1/406H04R3/005H04R2201/401H04R2499/13G10L25/51G10L25/18G01H3/08B60R2011/0003B60R11/0247
Inventor 二宫一史石塚康孝永田英宪饭田稔树
Owner HONDA MOTOR CO LTD