Robot cleaner and control method thereof
First Claim
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1. A robot cleaner comprising:
- a main body;
a driving unit moving the main body in a traveling direction at a traveling velocity;
a sensor unit sensing obstacles around the main body, the sensor unit including a front sensor and side sensors, the side sensors including a first side sensor and a second side sensor;
a main brush unit formed on the main body;
side brush units installed on both sides of a front portion of the main body; and
a controller reducing the traveling velocity of the main body and causing the main body to approach a front obstacle when an area where a plurality of obstacles contacts each other is sensed through the sensor unit,wherein the controller includesa corner judgment unit judging that the area where a plurality of obstacles contacts each other is present in front of the main body when the front sensor and at least one of the first side sensor and the second side sensor simultaneously sense obstacles, anda travel pattern control unit rotating the main body by a predetermined angle in the direction of a corner where the plurality of obstacles contacts each other when the main body approaches the front obstacle, whereby one of the side brush units is rotated in the direction of the corner to further approach the corner.
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Abstract
A robot cleaner includes a main body traveling along a floor surface and removing foreign substances in a cleaning travel mode, a sensor unit sensing obstacles around the main body, brush units sweeping foreign substances on a floor surface through rotation, and a controller reducing the traveling velocity of the main body and causing the main body to approach a front obstacle, if an area where a plurality of obstacles contacts each other is sensed by the sensor unit.
26 Citations
17 Claims
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1. A robot cleaner comprising:
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a main body; a driving unit moving the main body in a traveling direction at a traveling velocity; a sensor unit sensing obstacles around the main body, the sensor unit including a front sensor and side sensors, the side sensors including a first side sensor and a second side sensor; a main brush unit formed on the main body; side brush units installed on both sides of a front portion of the main body; and a controller reducing the traveling velocity of the main body and causing the main body to approach a front obstacle when an area where a plurality of obstacles contacts each other is sensed through the sensor unit, wherein the controller includes a corner judgment unit judging that the area where a plurality of obstacles contacts each other is present in front of the main body when the front sensor and at least one of the first side sensor and the second side sensor simultaneously sense obstacles, and a travel pattern control unit rotating the main body by a predetermined angle in the direction of a corner where the plurality of obstacles contacts each other when the main body approaches the front obstacle, whereby one of the side brush units is rotated in the direction of the corner to further approach the corner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A control method of a robot cleaner comprising:
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traveling a main body of the robot cleaner along a floor surface based on a normal cleaning travel pattern in a cleaning travel mode, the main body including a main brush unit formed on the main body and side brush units installed on both sides of a front portion of the main body; sensing whether or not an area where a plurality of obstacles contacts each other is present in front of the main body through a sensor unit, the sensor unit including a front sensor and side sensors, the side sensors including a first side sensor and a second side sensor; causing the main body to approach a front obstacle by reducing a traveling velocity when the area where a plurality of obstacles contacts each other is present, as a result of sensing; and rotating the main body by a predetermined angle in the direction of a corner where the plurality of obstacles contacts each other, whereby one of the side brush units is rotated in the direction of the corner to further approach the corner. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification