Patent ID: 9447773
Filing Date: 2016-09-20
CPC Classification: F03D,F05B,G01B,G01S,Y02E

Claim Text:
1. An arrangement to measure deflection of a blade of a wind turbine, comprising a transmitter positioned at a tip end of and within the blade; a receiver positioned at a root end of and within the blade; and a monitoring system arranged at the root end of and within the blade, wherein the monitoring system generates a monitoring signal; wherein the monitoring system is connected to the transmitter by a cable-bound communication line through which the monitoring signal is transferred from the monitoring system to the transmitter at the tip end of the blade, wherein the transmitter transmits a radio-frequency-transmission of the monitoring signal to the receiver, wherein the receiver receives the monitoring signal transmitted as the radio-frequency transmission by the transmitter, wherein the monitoring system is connected to the receiver and the monitoring signal is transferred from the receiver to the monitoring system, and wherein the monitoring system determines the deflection of the blade based on the monitoring signal from the receiver.