System, method and device for checking blades of wind power plant

A method for checking blades of a wind power plant, the method comprising:

• causing a first unmanned aerial vehicle with a transmitter of electromagnetic waves mounted thereon to wait in surroundings of rotating surfaces of the blades;
• causing a second unmanned aerial vehicle with a receiver of electromagnetic waves mounted thereon to wait in the surroundings of the rotating surfaces;
• emitting electromagnetic waves from the transmitter toward the rotating surfaces in a state where the first unmanned aerial vehicle and the second unmanned aerial vehicle face each other with the rotating surfaces sandwiched therebetween;
• receiving, by the receiver, at least one of a reflected wave and a diffracted wave generated by the blades due to emission of the electromagnetic waves from the transmitter;
• and
• determining whether or not there is an abnormality in the blades through analysis processing of the reflected wave or the diffracted wave received by the receiver.

A device for checking blades of a wind power plant, the device comprising:

• an antenna;
• receiving circuitry that is configured to receive, by using the antenna, at least one of a reflected wave and a diffracted wave generated by the blades due to emission of electromagnetic waves from a transmitter of electromagnetic waves in a case where the antenna faces the transmitter with rotating surfaces of the blades sandwiched therebetween;
• and
• analysis processing circuitry that is configured to determine whether or not there is an abnormality in the blades through analysis processing of the reflected wave or the diffracted wave received by the receiving circuitry.