Sensor device for measuring aerodynamic loads of a rotor blade of a wind turbine
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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Abstract
A sensor device for measuring aerodynamic loads of a rotor blade for a wind power installation. The sensor device includes a reflector arranged in a cavity of the rotor blade which signals a signal evaluation device arranged at a distance from the reflector. The signal evaluation device detects and quantifies physical changes of the rotor blade from the reflected signal. A cleaning device for the reflector is arranged on the reflector for activation by a centrifugal force generated during the rotation of the rotor to clean the reflector.
14 Citations
17 Claims
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1. A sensor device for measuring aerodynamic loads of a wind turbine rotor blade comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A sensor device for measuring aerodynamic loads of a wind turbine rotor blade comprising:
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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 reflector signal from the reflector, the signal evaluation device detecting and quantifying a physical change of the rotor blade from the reflector signal; a cleaning device associated with the reflector for cleaning the reflector, the cleaning device being activated by a centrifugal force generated during rotation of the rotor hub, the cleaning device being activated in response to an increase in hydraulic or pneumatic pressure with increasing centrifugal force. - View Dependent Claims (17)
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Specification