VIBRATION DETECTION DEVICE, VIBRATION DETECTION METHOD, AND ABNORMALITY DETERMINATION SYSTEM

Title:

VIBRATION DETECTION DEVICE, VIBRATION DETECTION METHOD, AND ABNORMALITY DETERMINATION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2021/049008

Kind Code:

A1

Abstract:

This vibration detection device (4) comprises: an A/D conversion unit (41) that receives a sinusoidal signal of an AE wave corresponding to vibrations generated in a target machine (2) from an AE sensor (3) for detecting the AE wave, and converts the input sinusoidal signal into digital data; and an extraction unit (42) that extracts, from the digital data, a data point of a maximum value for each cycle of the sinusoidal signal.

Inventors:

SHINOHARA SHINJI (JP)
HATANO TERU (JP)

Application Number:

PCT/JP2019/036117

Publication Date:

March 18, 2021

Filing Date:

September 13, 2019

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Assignee:

MITSUBISHI ELECTRIC ENG (JP)

International Classes:

G01M99/00; G01H17/00

Domestic Patent References:

WO2018193617A1

2018-10-25

Foreign References:

JP2002107347A	2002-04-10
JP2018128467A	2018-08-16
JPH07286893A	1995-10-31
JP2003344150A	2003-12-03
JP2011020221A	2011-02-03
US20160109329A1	2016-04-21

Attorney, Agent or Firm:

TAZAWA, Hideaki et al. (JP)

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