Title:
STRUCTURE DIAGNOSIS DEVICE, STRUCTURE DIAGNOSIS METHOD, AND COMPUTER-READABLE RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2020/179241
Kind Code:
A1
Abstract:
This structure diagnosis device 1 for diagnosing the state of a structure having low natural frequency variation comprises: a natural vibration extraction unit 2 for acquiring, from a plurality of sensors 21 provided on a structure 20, vibration information expressing vibration produced in the structure 20 and using the vibration information to extract natural vibration; a spectral shape extraction unit 3 for using the natural vibration to extract spectral shape information expressing a spectral shape; an index calculation unit 4 for calculating an index expressing the relationship between the spectral shape information and preset standard spectral shape information serving as a standard; and a state estimation unit 5 for estimating the state of the structure on the basis of the index.
Inventors:
KINOSHITA SHOHEI (JP)
KASAI SHIGERU (JP)
KIYOKAWA YU (JP)
KASAI SHIGERU (JP)
KIYOKAWA YU (JP)
Application Number:
PCT/JP2020/001377
Publication Date:
September 10, 2020
Filing Date:
January 16, 2020
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01H17/00; G01M99/00
Foreign References:
| JP2015102363A | 2015-06-04 | |||
| JP2001296214A | 2001-10-26 | |||
| JP2016218032A | 2016-12-22 | |||
| JP2018179863A | 2018-11-15 | |||
| JP2013040774A | 2013-02-28 | |||
| US20170363504A1 | 2017-12-21 | |||
| US20070052426A1 | 2007-03-08 | |||
| CN103530275A | 2014-01-22 |
Attorney, Agent or Firm:
BRIGHTAS IP ATTORNEYS (JP)
Download PDF:
Previous Patent: IMAGE VERIFICATION SYSTEM
Next Patent: BEARING DIAGNOSTIC DEVICE, BEARING DIAGNOSTIC METHOD, AND COMPUTER READABLE RECORDING MEDIUM
Next Patent: BEARING DIAGNOSTIC DEVICE, BEARING DIAGNOSTIC METHOD, AND COMPUTER READABLE RECORDING MEDIUM