Patent ID: 9529086
Filing Date: 2016-12-27
CPC Classification: A47L,B64C,G01N,G01S

Claim Text:
1. A dust detection apparatus comprising: a memory that stores predetermined dust accumulation candidate positions, including a first position and a second position; a dust sensor that measures a first plurality of air dust amounts at the first position in a plurality of directions, the first plurality of air dust amounts including a first air dust amount at the first position in a first direction of the plurality of directions; a controller that determines a moving direction of the dust detection apparatus, the moving direction being a direction directed toward the second position, when the first plurality of air dust amounts do not exceed a threshold, and the moving direction being the first direction when the first air dust amount exceeds the threshold and is the largest of the first plurality of the air dust amounts; a flight controller that controls a flight of the dust detection apparatus to the determined moving direction; and a communicator that sends, to a server, location information of a dust accumulation position an air dust amount at the dust accumulation position, wherein the dust sensor further measures a second plurality of air dust amounts at a location during movement of the dust detection apparatus in the first direction, and when the second plurality of air dust amounts are less than the first plurality of air dust amounts, the controller determines the location as the dust accumulation position, and changes the moving direction from the first direction to the direction directed toward the second position.