System for evaluating abnormal sound, sound recorder and apparatus for evaluating abnormal sound

• US 20040015251A1
• Filed: 04/28/2003
• Published: 01/22/2004
• Est. Priority Date: 12/01/2000
• Status: Active Grant

• Current Assignee: Daihatsu Motor Company Limited (Toyota Motor Corporation)
• Original Assignee: Daihatsu Motor Company Limited (Toyota Motor Corporation)
• Inventors: Ryoichi, Endo, Ando, Masaru, Kusao, Nozomi, Ogino, Michiaki, Hamada, Tsuyoshi
• Granted Patent: US 7,187,773 B2
• Time in Patent Office: Days
• US Class Current: 700/94
• CPC Class Codes: G01M 15/12 by monitoring vibrations
• CPC Class Codes: G01N 29/14 using acoustic emission techniques echo of particles G01N29/046; measuring mechanical vibrations or acoustic waves in solids in general G01H1/00

Abstract

An abnormal sound evaluation system according to this invention includes a sound recording device for recording a sound generated from equipment at a location adjacent the equipment, and an abnormal sound evaluation device for evaluating the sound recorded, wherein: the sound recording device includes sound data conversion means for converting the recorded sound into digital sound data, and sound data output means for outputting the digital sound data thus converted for the abnormal sound evaluation device; and the abnormal sound evaluation device includes sound data input means for receiving the digital sound data, and abnormal sound evaluation means for evaluating the sound as to abnormality based on the digital sound data inputted and outputting a conclusion of the evaluation including abnormality information about the equipment.

Claims

1. An abnormal sound evaluation system characterized by comprising a sound recording device for recording a sound generated from equipment at a location adjacent the equipment, and an abnormal sound evaluation device for evaluating the sound recorded, wherein:

the sound recording device includes sound data conversion means for converting the recorded sound into digital sound data, and sound data output means for outputting the digital sound data thus converted for the abnormal sound evaluation device; and

the abnormal sound evaluation device includes sound data input means for receiving the digital sound data, and abnormal sound evaluation means for evaluating the sound as to abnormality based on the digital sound data inputted and outputting a conclusion of the evaluation including abnormality information about the equipment.

3. The abnormal sound evaluation system according to claim 1 or 2, wherein the conclusion of the evaluation includes at least one selected from abnormality information items about presence or absence of an abnormality, a location of the abnormality, an abnormality condition, a replacement part, and a repairing method.

2. An abnormal sound evaluation system characterized by comprising a sound recording device for recording a sound generated from equipment at a location adjacent the equipment, and an abnormal sound evaluation device for evaluating the sound recorded, wherein:

the sound recording device includes sound data conversion means for converting the recorded sound into digital sound data, sound data output means for outputting the digital sound data thus converted for the abnormal sound evaluation device, and evaluation conclusion input means for receiving a conclusion of evaluation outputted from the abnormal sound evaluation device; and

the abnormal sound evaluation device includes sound data input means for receiving the digital sound data outputted from the sound recording device, abnormal sound evaluation means for evaluating the sound based on the digital sound data inputted and outputting a conclusion of the evaluation including abnormality information, and evaluation conclusion output means for outputting the conclusion of the evaluation outputted by the abnormal sound evaluation means for the sound recording device.

4. A sound recording device characterized by comprising:

sound recording means for recording a sound generated from equipment at a location adjacent the equipment;

sound data conversion means for converting the sound recorded into digital sound data; and

sound data output means for outputting the digital sound data thus converted for an abnormal sound evaluation device.

5. An abnormal sound evaluation device characterized by comprising:

sound data input means for receiving digital sound data converted from a sound generated from equipment and recorded at a location adjacent the equipment;

data storage means for storing reference digital sound data corresponding to an abnormal sound generated when an abnormality occurs in the equipment while relating the reference digital sound data to condition data representing a condition of the abnormality; and

abnormal sound evaluation means for evaluating the abnormal sound by comparing the digital sound data inputted with the reference digital sound data and outputting a conclusion of the evaluation including abnormality information.

6. The abnormal sound evaluation device according to claim 5, wherein the conclusion of the evaluation includes at least one selected from abnormality information items about presence or absence of an abnormality, a location of the abnormality, an abnormality condition, a replacement part, and a repairing method.