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Sensor device for measuring aerodynamic loads of a rotor blade of a wind turbine

  • US 9,657,720 B2
  • Filed: 02/22/2012
  • Issued: 05/23/2017
  • Est. Priority Date: 03/19/2011
  • Status: Active Grant
First Claim
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1. A sensor device for measuring aerodynamic loads of a wind turbine rotor blade comprising:

  • a reflector arranged in a cavity of a rotor blade extending from a rotor hub;

    a signal evaluation device arranged at a distance from the reflector and operable to receive a signal from the reflector, the signal evaluation device detecting and quantifying a physical change of the rotor blade from the reflector signal; and

    a cleaning device associated with the reflector for cleaning the reflector, the cleaning device activated by a centrifugal force during rotation of the rotor hub; and

    wherein the cleaning device is operable for activation when the rotor hub is rotating slowly and deactivation when the rotor hub is rotating quickly.

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