DEVICE AND METHOD FOR VISUAL ANALYSIS OF A WIND TURBINE BLADE

摘要

The device (200) comprises image capturing means (210) for acquiring at least one image of at least one portion of wind turbine blade (40) are adapted for being triggered to acquire said image according to parameters related to the wind turbine blade such as blade azimuth and blade pitch at a given time. Acquired images are compared with predetermined reference images having such parameters associated therewith. Other parameters such as blade surface temperature or wind speed may be used. The image capturing means may comprise a CCD device mounted on an upper portion in a wind turbine nacelle. An alarm signal can be sent to warn an operator for any abnormalities on the wind turbine blade surface.