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:
Sep. 01, 2026
Filed:
Feb. 28, 2023
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Nagisa Matsumoto, Tokyo, JP;
Masayuki Kakida, Tokyo, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
A performance measuring and diagnosing device for a machine includes an information acquisition section, an information preprocessing section, a frequency feature distinguishing section, a frequency feature estimating section, a performance measuring and diagnosing section, and a display section. The information acquisition section acquires state information of the machine. The information preprocessing section preprocesses the state information acquired by the information acquisition section. The frequency feature distinguishing section executes frequency analysis on the data after preprocessing by the information preprocessing section to distinguish between a state frequency feature candidate and a frequency feature indicating noise. The state frequency feature candidate is a candidate for a frequency feature indicating a state of the machine. The frequency feature estimating section estimates the frequency feature corresponding to the state of the machine from among the state frequency feature candidates based on the state frequency feature candidate and the frequency feature indicating noise.