US 11,988,193 B2
Device for a wind turbine
Eirik Nagel, Flensburg (DE); and John Nieuwenhuizen, Horsens (DK)
Assigned to SIEMENS GAMESA RENEWABLE ENERGY A/S, Brande (DK)
Appl. No. 17/276,940
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Aug. 28, 2019, PCT No. PCT/EP2019/072917
§ 371(c)(1), (2) Date Mar. 17, 2021,
PCT Pub. No. WO2020/057917, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 18196037 (EP), filed on Sep. 21, 2018.
Prior Publication US 2022/0034304 A1, Feb. 3, 2022
Int. Cl. F03D 17/00 (2016.01); H01Q 13/20 (2006.01)
CPC F03D 17/00 (2016.05) [H01Q 13/203 (2013.01); F05B 2270/805 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A wind turbine including a tower, a nacelle and at least one rotatable blade and an object position and/or speed and/or size detection device comprising:
at least one coaxial leaky cable;
at least one electromagnetic transmitter connected to the least one leaky feeder for transmitting a first electromagnetic signal along the least one coaxial leaky cable towards a target object, whose position is to be detected;
at least one electromagnetic receiver connected to the least one coaxial leaky cable for receiving from the at least one coaxial leaky cable a second electromagnetic signal, the second electromagnetic signal being reflected from the target object when the first electromagnetic signal hits the target object; and
a processing unit connected to the electromagnetic transmitter and the electromagnetic receiver and configured to analyze the first electromagnetic signal and the second electromagnetic signal for determining the position and/or speed and/or direction and/or the size of the target object.