Abstract:
A robot cleaner includes: a suction unit (60) installed at a cleaner body (1), for sucking dirt on a floor; a driving unit (50) for moving the cleaner body; a sensing unit (100) mounted at the cleaner body (1), for sensing a depressed portion and a stepped portion such as a doorsill of a floor; and a control unit (10) receiving a signal of the sensing unit, for controlling the driving unit (50) to allow the cleaner body (1) to avoid the depressed portion and the stepped portion, thereby correctly sensing the depressed portion or the stepped portion of the floor and avoiding such a portion. Accordingly, the cleaning operation is stably carried out.
Abstract:
An automatic charging system of a robot cleaner includes: a rotating plate (306) installed at a robot cleaner; an infrared ray receiving unit (304,305) mounted at the rotating plate (306) and receiving an infrared signal generated from a power supply unit (400) while being rotated; a microcomputer (303) for moving the robot cleaner to the power supply unit (400) on the basis of the received infrared signal; and an ultrasonic generator (308) for generating a stop signal when the robot cleaner nears to the power supply unit (400). A robot cleaner can be accurately and quickly moved to a power supply unit for a rapid charging operation, and a cost for implementing the robot cleaner can be reduced.