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:
May. 11, 2021
Filed:
Aug. 22, 2018
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Toshiba Energy Systems & Solutions Corporation, Kawasaki, JP;
Akihiko Enamito, Kawasaki, JP;
Osamu Nishimura, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Toshiba Energy Systems & Solutions Corporation, Kawasaki, JP;
Abstract
Diagnostic device including a hammering sound signal acquisition unit, a frequency characteristic conversion unit, and an abnormality determination unit. The hammering sound signal acquisition unit acquires an i-th hammering sound signal and a j-th hammering sound signal representing hammering sounds with respect to striking applied to an i-th and a j-th struck position of an inspection target. The frequency characteristic conversion unit respectively converts the i-th hammering sound signal and the j-th hammering sound signal into an i-th frequency characteristic and a j-th frequency characteristic. The abnormality determination unit determines presence or absence of an abnormality in the inspection target on the basis of a matching degree of waveforms around peaks in the i-th frequency characteristic and waveforms around peaks in the j-th frequency characteristic. The diagnostic device can be used with an inspection robot to automatically analyze for loose stator wedges.