The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2024
Filed:
Jan. 16, 2020
Nec Corporation, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A structure diagnosis apparatusfor diagnosing a state of a structure in which there is a small change in the natural frequency includes: a natural vibration extraction unitconfigured to acquire, from a plurality of sensorsthat a structure is provided with, vibration information indicating vibration generated in the structure, and extracting natural vibration using the vibration information; a spectral shape extraction unitconfigured to extract spectral shape information indicating a shape of a spectrum using the natural vibration; an index calculation unitfor calculating an index indicating a relationship between the spectral shape information and reference spectral shape information that is a preset reference; and a state estimation unitfor estimating the state of the structure based on the index.