Siemens Aktiengesellschaft

Roland Gierlich

Andreas Ziroff

Jörg Hüttner

Jörg HÜTTNER

A method and an arrangement for determining the delay of a signal between a first station and a second station of the arrangement, with the aim of determining the spatial distance between the stations. A first series of first signal pulses is generated in the first station at a first pulse repetition rate f. A second and a third series of second and third signal pulses is generated in the second station, comprising a second fand third pulse repetition rate f, where f=f+&#x394;f and f=f&#x2212;&#x394;f. The second and third series of second and third signal pulses are transmitted to the first station, where the series are correlated with the first series of first signal pulses. The delay of the signal can be determined from the time elapsed between two successive pulses of the signal arising from the correlation.

Method and arrangement for measuring delay of a signal between two stations of the arrangement

An arrangement for detecting bending deflection of a wind turbine blade is provided. The arrangement for the wind turbine includes a radio transmitter and a linear antenna array assigned to the radio transmitter. The radio transmitter is mounted on the blade tip and emits a signal. The antenna array is mounted on the rotor of the wind turbine in a co-rotating manner and receives the signal. On the basis of the transit times of the signal from the rotor to the individual antennas of the array, the position of the radio transmitter relative to the array is determined. In the event of blade deflection, for example when a high wind load is present, the relative position changes which is detected by the arrangement.

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Rheinbach, Germany

Roland Gierlich