| 摘要 |
The invention relates to a sensor device for measuring aerodynamic loads of at least one rotor blade (9, 10, 18) of a wind power installation (1), said rotor blade being secured at the blade root (23) on a rotor hub (8) of a rotor (6), the sensor device comprising at least one reflector (25) which is arranged in a cavity (24) of a rotor blade (9, 10, 18) and is coupled via a signal (29, 30) to a signal evaluation device (28) that is arranged at a distance from the reflector (25), said signal evaluation device detecting and quantifying physical changes of the rotor blade (9, 10, 18) from the reflected signal (30). A cleaning device (34) for the reflector (25) is arranged on the reflector (25) and can be activated and/or is activated by the centrifugal force (36) generated during the rotation of the rotor, cleaning the reflector (25). |
