Patent ID: 8885168
Filing Date: 2014-11-11
Classification: F03D,F05B,G01H,G01N,Y02B,Y02E

Abstract:
1. A wind turbine including an optical sensor system comprising one or more sensors, each sensor comprising: a reflective sensor membrane; a light source for illuminating a surface of the sensor membrane with a light beam; an optical dispersive element arranged to disperse the light beam from the light source to produce a dispersed light beam; and a light detector for receiving a portion of the light beam after reflection of the light beam from the surface of the sensor membrane and after dispersion of the light beam by the optical dispersive element, wherein the wavelength of the light received at the light detector varies as a function of the displacement of the sensor membrane and wherein the light detector operatively provides an output based on changes in the wavelength of the received light, wherein the wind turbine further comprises a controller for receiving data from the sensor system and based on the received data controlling an operating parameter of the wind turbine.