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:
Jul. 23, 2019
Filed:
Sep. 27, 2013
Korea Electric Power Corporation, Seoul, KR;
Jae Kyung Lee, Daejeon, KR;
Joon Young Park, Daejeon, KR;
Jun Shin Lee, Daejeon, KR;
Byung Mok Park, Daejeon, KR;
Keum Seok Kang, Daejeon, KR;
Moo Sung Ryu, Daejeon, KR;
Ji Young Kim, Daejeon, KR;
Seok Tae Kim, Daejeon, KR;
Dae Soo Lee, Daejeon, KR;
Korea Electric Power Corporation, Seoul, KR;
Abstract
The present invention relates to a signal processing device for monitoring states of wind-power turbine blades and a method thereof, the signal processing device comprising: an optical fiber sensor unit for sensing moment of rotation of three blades so as to output the moment of rotation as blade signals; a signal transformation unit for converting three blade signals into two fore-ape signals; a rotation information input unit for sensing rotation information of the blades; a rotation speed estimation unit for estimating a rotation speed of the blades on the basis of the rotation information; a state determination unit which removes rotation components from the fore-ape signals and determines whether an operation of a blade is abnormal; and an output unit for outputting the determination result. According to the present invention, two fore-ape signals which are simpler than three blade signals can be processed such that an efficient signal analysis is enabled and the efficiency of determining a state of blades is improved, thereby efficiently managing and maintaining the blades.