Patent ID: 8714912

Claim:
An arrangement for detecting a deformation of a blade of a wind turbine, the wind turbine comprising: a tower, a nacelle disposed on the tower and containing a bearing, a rotor which is mounted in the bearing such that the rotor rotates about an axis of rotation, and the blade being fixed to the rotor such that the blade co-rotates with the rotor about the axis of rotation, wherein the arrangement comprises: a radio transmitter mounted on a first component of the wind turbine, and an antenna device mounted on a second component of the wind turbine such that the antenna device co-rotates with the radio transmitter, the antenna device includes a plurality of individual antennas assigned to the radio transmitter, each of the individual antennas being embodied to receive a signal emitted by the radio transmitter, the antenna device mounted such that the signal emitted by the radio transmitter is received continuously over a 360 degree rotation of the rotor, wherein the signal continuously received by the antenna device is used to detect a position of the radio transmitter relative to the antenna device in the direction of the axis of rotation, wherein the first component is the blade and the second component is the rotor or wherein the first component is the rotor and the second component is the blade.