Robot cleaner and control method thereof

摘要

A robot cleaner includes a main brush to sweep or scatter dust off a floor, a main brush motor to rotate the main brush, a Revolution Per Minute (RPM) detector to detect an RPM of the main brush motor, and a control unit to determine a type of floor according to the RPM of the main brush motor acquired by the RPM detector and control an operation of the robot cleaner based on the determined type of floor. A carpet mode to clean only a carpet area and a hard floor mode to clean a hard floor area excluding the carpet area are given based on detected information relating to the material of a floor, which enables partial cleaning with respect to a cleaning area selected by a user and adjustment in the number of cleaning operations or the intensity of cleaning according to the material of the floor.

主权项

1. A robot cleaner comprising:
a main brush to brush a floor; a main brush motor to rotate the main brush; a Revolution Per Minute (RPM) detector to detect an RPM of the main brush motor; a control unit configured to determine whether the floor is a carpeted floor area or a hard floor area based on the detected respective RPM's of the main brush motor, when the robot cleaner is moving across the carpeted floor area or the hard floor area; an input unit on an exterior surface of the robot cleaner to allow a user of the robot cleaner to select between only one of a carpeted floor area cleaning mode or a hard floor area cleaning mode; an upward camera unit to capture an upward image perpendicular to a traveling direction of the robot cleaner; wherein the control unit produces a map using the upward image acquired by the upward camera unit and the detected respective RPM's such that the carpeted area, the hard floor area, a boundary between the carpeted floor area and the hard floor area and a stepped area are marked on the map; a storage for storing the map, wherein the control unit is further configured to clean either the carpeted floor area or the hard floor area based on the map, and wherein the control unit uses only the RPM of the main brush when determining the carpeted floor area or the hard floor area.