公开(公告)号：EP2898216B1

公开(公告)日：2016-12-07

申请号：EP13763023.2

申请日：2013-09-10

Applicant: Technische Universität München

Inventor： MÜLLER, Mathias ,  WOJTECH, Rolf ,  BUCK, Thorbjörn

IPC: F03D80/00

CPC classification number: G01N3/20 ,  F03D7/0296 ,  F03D17/00 ,  F05B2260/80 ,  F05B2260/83 ,  F05B2270/332 ,  F05B2270/334 ,  F05B2270/807 ,  F05B2270/808 ,  F05B2270/821 ,  G01M5/0016 ,  G01M5/0041 ,  G01M7/025 ,  G01M11/083 ,  G01M15/14 ,  G01P15/093 ,  Y02E10/722

公开(公告)号：EP2475971A1

公开(公告)日：2012-07-18

申请号：EP10752800.2

申请日：2010-09-09

Applicant: Technische Universität München

Inventor： BUCK, Thorbjörn ,  MÜLLER, Mathias

IPC: G01J3/18 ,  G01J3/36 ,  G01D5/353 ,  G02B6/12

CPC classification number: G01J3/18 ,  G01B11/18 ,  G01J3/0259 ,  G01J3/1809 ,  G01J3/1895 ,  G01J3/36 ,  G02B6/12019

Abstract: The invention relates to a measuring device for reading out measuring sensors disposed in a fiber optical waveguide. The measuring device comprises a grid array which distributes an input signal generated by the measuring sensors to different outputs. The transmission characteristics (12) associated with the outputs have as large an overlap region as possible so as to increase the measuring range of the measuring device.

公开(公告)号：EP2856096B1

公开(公告)日：2016-08-10

申请号：EP13726550.0

申请日：2013-06-04

Applicant: Technische Universität München

Inventor： BUCK, Thorbjörn ,  HOFFMANN, Lars ,  MÜLLER, Mathias ,  WOJTECH, Rolf

IPC: G01L1/24 ,  G01M11/02

CPC classification number: G01L1/246 ,  G01B21/042 ,  G01D5/35303 ,  G01L25/00

公开(公告)号：EP2856097A1

公开(公告)日：2015-04-08

申请号：EP13726797.7

申请日：2013-06-04

Applicant: Technische Universität München

Inventor： BUCK, Thorbjörn ,  HOFFMANN, Lars ,  MÜLLER, Mathias ,  WOJTECH, Rolf

IPC: G01L1/24 ,  G01L1/26

CPC classification number: G01L1/246 ,  G01L1/26

Abstract: The invention relates to a method for compensating, e.g. for compensating the temperature of a fibre-optic measuring system designed to detect a mechanical variable. First and second fibre Bragg gratings have a respective Bragg wavelength and the fibre Bragg gratings are irradiated with primary light. After the mechanical variable is applied to the first and second fibre Bragg gratings, the Bragg wavelengths of the fibre Bragg gratings are modified by the mechanical variable. The first and second secondary light that has been produced by the primary light and modified by the Bragg wavelength of the fibre Bragg grating in conjunction with the mechanical variable is filtered by means of an optical filter device, in such a way that the Bragg wavelength of the first fibre Bragg grating lies in the region of the rising filter edge and the Bragg wavelength of the second fibre Bragg grating lies in the region of the falling filter edge of the optical filter device. Once the intensities of the filtered first and second secondary light have been detected, said intensities are compared, as a result of which the mechanical variable can be determined from said intensity comparison.

公开(公告)号：EP2855930B1

公开(公告)日：2016-01-13

申请号：EP13727863.6

申请日：2013-06-04

Applicant: Technische Universität München

Inventor： BUCK, Thorbjörn ,  HOFFMANN, Lars ,  MÜLLER, Mathias ,  WOJTECH, Rolf

IPC: F03D11/00 ,  F03D3/06 ,  G01M5/00

CPC classification number: F03D11/0091 ,  F03D3/062 ,  F03D17/00 ,  F05B2270/802 ,  F05B2270/804 ,  F05B2270/821 ,  G01M5/0091 ,  Y02E10/721 ,  Y02E10/722 ,  Y02P70/523 ,  Y10T29/37 ,  Y10T29/49336

公开(公告)号：EP2898216A1

公开(公告)日：2015-07-29

申请号：EP13763023.2

申请日：2013-09-10

Applicant: Technische Universität München

Inventor： MÜLLER, Mathias ,  WOJTECH, Rolf ,  BUCK, Thorbjörn

IPC: F03D11/00

CPC classification number: G01N3/20 ,  F03D7/0296 ,  F03D17/00 ,  F05B2260/80 ,  F05B2260/83 ,  F05B2270/332 ,  F05B2270/334 ,  F05B2270/807 ,  F05B2270/808 ,  F05B2270/821 ,  G01M5/0016 ,  G01M5/0041 ,  G01M7/025 ,  G01M11/083 ,  G01M15/14 ,  G01P15/093 ,  Y02E10/722

Abstract: The invention relates to a method for monitoring the state of a rotor blade of a wind turbine. The method comprises the following steps: measuring an acceleration of the rotor blade by means of a first signal, said acceleration being measured at a first position at a predetermined distance from the rotor blade root in at least one direction, comprising a first direction component perpendicular to the axis of the rotor blade; measuring an elongation of the rotor blade by means of a second signal, said elongation being measured at a second position arranged in the region between the first position and the rotor blade root; determining a first position change at the first position by means of the acceleration; determining a first value corresponding to the rotor blade stiffness or to the rotor blade elasticity by means of calculation using the first position change and the elongation; and determining the state of the rotor blade from the first value.