Robot cleaner, docking station, robot cleaner system including robot cleaner and docking station, and method of controlling robot cleaner
First Claim
1. A docking system comprising:
- a docking station comprising;
a first transmission unit to transmit a first docking guide signal to both a first short-distance guide area and to a first long-distance guide area, the first docking guide signal comprising a first signal pulse and a second signal pulse having an amplitude different than an amplitude of the first signal pulse, and wherein the first signal pulse and the second signal pulse are transmitted by the first transmission unit within a single period of a signal;
a second transmission unit to transmit a second docking guide signal to both a second short-distance guide area and to a second long-distance guide area, the second docking guide signal comprising a first signal pulse and a second signal pulse having an amplitude different than an amplitude of the first signal pulse; and
a controller to control a time delay between the first signal pulse and the second signal pulse of the first docking guide signal to be different than a time delay between the first signal pulse and the second signal pulse of the second docking guide signal,and the docking station is configured to communicate with a robot cleaner comprising;
a reception unit configured to receive the first docking guide signal or the second docking guide signal from the docking station; and
a control unit configured to determine whether the first docking guide signal or second docking guide signal is received in the short-distance docking guide area or in the long-distance guide area based on the received first signal pulse and second signal pulse of the first docking guide signal or second docking guide signal.
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Abstract
A robot cleaner system is described including a docking station to form a docking area within a predetermined angle range of a front side thereof, to form docking guide areas which do not overlap each other on the left and right sides of the docking area, and to transmit a docking guide signal such that the docking guide areas are distinguished as a first docking guide area and a second docking guide area according to an arrival distance of the docking guide signal. The robot cleaner system also includes a robot cleaner to move to the docking area along a boundary between the first docking guide area and the second docking guide area when the docking guide signal is sensed and to move along the docking area so as to perform docking when reaching the docking area.
29 Citations
10 Claims
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1. A docking system comprising:
a docking station comprising; a first transmission unit to transmit a first docking guide signal to both a first short-distance guide area and to a first long-distance guide area, the first docking guide signal comprising a first signal pulse and a second signal pulse having an amplitude different than an amplitude of the first signal pulse, and wherein the first signal pulse and the second signal pulse are transmitted by the first transmission unit within a single period of a signal; a second transmission unit to transmit a second docking guide signal to both a second short-distance guide area and to a second long-distance guide area, the second docking guide signal comprising a first signal pulse and a second signal pulse having an amplitude different than an amplitude of the first signal pulse; and a controller to control a time delay between the first signal pulse and the second signal pulse of the first docking guide signal to be different than a time delay between the first signal pulse and the second signal pulse of the second docking guide signal, and the docking station is configured to communicate with a robot cleaner comprising; a reception unit configured to receive the first docking guide signal or the second docking guide signal from the docking station; and a control unit configured to determine whether the first docking guide signal or second docking guide signal is received in the short-distance docking guide area or in the long-distance guide area based on the received first signal pulse and second signal pulse of the first docking guide signal or second docking guide signal. - View Dependent Claims (2, 4, 5, 6, 7, 8)
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3. A docking station comprising:
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a first transmission unit to transmit a first docking guide signal in a first direction, wherein the first docking guide signal is configured such that the first docking guide signal sensed by a robot cleaner in a first short-distance docking guide area is distinguishable from the first docking guide signal sensed by the robot cleaner in a first long-distance docking guide area, wherein the first docking guide signal comprises at least a first signal pulse and a second signal pulse having an amplitude greater than an amplitude of the first signal pulse, the first signal pulse and the second signal pulse being transmitted within a single period of a signal, and wherein the first short-distance docking guide area and a second short-distance docking guide area do not overlap each other.
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9. A method of transmitting a docking guide signal to a robot cleaner, the method comprising:
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transmitting, by way of a first transmission unit, a first docking guide signal to both a first short-distance guide area and to a first long-distance guide area, the first docking guide signal comprising a first signal pulse and a second signal pulse having an amplitude different than an amplitude of the first signal pulse, and wherein the first signal pulse and the second signal pulse are transmitted within a single period of a signal; transmitting, by way of a second transmission unit, a second docking guide signal to both a second short-distance guide area and to a second long-distance guide area, the second docking guide signal comprising a first signal pulse and a second signal pulse having an amplitude different than an amplitude of the first signal pulse; controlling a time delay between the first signal pulse and the second signal pulse of the first docking guide signal to be different than a time delay between the first signal pulse and the second signal pulse of the second docking guide signal; receiving, by the robot cleaner, the first docking guide signal from the first transmission unit or the second docking guide signal from the second transmission unit; and distinguishing, by the robot cleaner, between the first docking guide signal received in the short-distance guide area and the first docking guide signal received in the long-distance guide area or between the second docking guide signal received in the short-distance guide area and the second docking guide signal received in the long-distance guide area.
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10. The docking system comprising:
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a docking station comprising; a first transmission unit to transmit a first docking guide signal in a first direction, wherein the first docking guide signal comprises at least a first signal pulse and a second signal pulse having an amplitude different than an amplitude of the first signal pulse, and the first signal pulse and the second signal pulse are transmitted within a single period of a first signal; and a second transmission unit to transmit a second docking guide signal in a second direction, wherein the second docking guide signal comprises at least a first signal pulse and a second signal pulse having an amplitude different than an amplitude of the first signal pulse, and the first signal pulse and the second signal pulse are transmitted within a single period of a second signal, and wherein a time delay between the first signal pulse and the second signal pulse of the first docking guide signal is different than a time delay between the first signal pulse and the second signal pulse of the second docking guide signal; and a robot cleaner comprising; a reception unit to receive the first docking guide signal from the first transmission unit or the second docking guide signal from the second transmission unit; and a control unit configured to determine if the received first docking guide signal or second docking guide signal is an unreflected wave received directly from the first transmission unit or the second transmission unit or if the received first docking guide signal or second docking guide signal is a reflected wave produced by reflection of the first docking guide signal or the second docking guide signal by an obstacle.
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Specification