| 摘要 |
In order e.g. to provide a wind turbine with a blade deflection monitoring which is relatively easy to maintain there is disclosed a wind turbine including a nacelle and a hub rotatably mounted to the nacelle via a main shaft. The hub includes at least one wind turbine blade. The blade includes a blade reflector which reflector displaces with the blade when the blade is subjected to a change in load. The nacelle includes an electromagnetic radiation emitter output and an electromagnetic radiation receiver input arranged to provide an electromagnetic radiation path from the electromagnetic radiation emitter output to the blade reflector and back towards the electromagnetic radiation receiver input, and a deflection of the blade can be determined by a monitoring device from a change in the electromagnetic radiation received in the electromagnetic radiation receiver input when the at least one blade is subjected to the change in load. |
