Patent ID: 11928974
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. An unmanned aircraft, comprising:
a sensor that includes at least a microphone that generates sound data by picking up sound; and
a processor,
wherein the processor
determines sound recording quality of a target sound obtained using the sound data generated by the microphone,
obtains a positional relationship between the unmanned aircraft and a sound source of the target sound using data generated by the sensor,
controls movement of the unmanned aircraft to control a distance between the unmanned aircraft and the sound source of the target sound, in accordance with the sound recording quality of the target sound and the positional relationship,
the processor further obtains distance information indicating a predetermined distance from the sound source, and
when causing the unmanned aircraft to approach the sound source, the processor causes the unmanned aircraft to move in accordance with the distance information and the positional relationship so that the unmanned aircraft does not approach any closer to the sound source than a safety position at the predetermined distance from the sound source,
if it is determined in the determination that a quality of a first target sound obtained by using first sound data generated as the sound data by the microphone of the unmanned aircraft which has been moved closer to a first safety position is higher than a predetermined goal quality when the processor has caused the unmanned aircraft to move to approach closer to the sound source to the first safety position, as the safety position, which is away from the sound source by the predetermined distance, the processor further causes the unmanned aircraft to move to a second safety position, wherein a quality of a second target sound is equivalent to the goal quality, the quality of the second target sound being obtained by using second sound data which is generated as the sound data by the microphone of the unmanned aircraft at the second safety position,
a positon of the unmanned aircraft in a height direction included in the first safety position is higher than a position of the sound source in the height direction,
a positon of the unmanned aircraft in the height direction included in the second safety position is lower than the position of the unmanned aircraft included in the first safety position and the second safety position is away from the sound source by the predetermined distance, and
in the movement of the unmanned aircraft to the second safety position, the processor causes the unmanned aircraft to move from the first safety position to the second safety position along a semicircle having a radius of the predetermined distance centered at a position of the sound source, so that the unmanned aircraft is moved in a direction in which the position of the unmanned aircraft in the height direction approaches to the ground and the unmanned aircraft goes away from the sound source in a horizontal direction of the unmanned aircraft.