Mobile robot charge station return system
First Claim
1. A mobile robot charge station return system comprising:
- a charge station for transmitting charge station position guidance signals to different areas in such a way that different emitting distances of the charge station position guidance signals change according to a predetermined time period; and
a mobile robot for receiving the charge station position guidance signals, calculating direction and distance information, and returning to the charge station according to the calculated direction and distance information,wherein the charge station includes;
a guidance signal transmitter including a plurality of infrared light emitting sections formed at a front of the charge station for transmitting the charge station position guidance signals to different areas, and a drive power control circuit for adjusting an amplitude of a drive power applied to the infrared light emitting sections; and
a controller for outputting a control signal to control the amplitude of the drive power with a predetermined period, andwherein the drive power control circuit includes;
first resistors connected to one terminal of the infrared light emitting sections, which is connected to a power supply in a forward direction;
second resistors having one terminal connected to an output terminal of the controller; and
a transistor having a collector, an emitter and a base, the collector connected to another terminal of the first resistor, the emitter connected to a ground, and the base connected to another terminal of the second resistor.
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Accused Products
Abstract
Disclosed is a mobile robot charge station return system, which may return a mobile robot to a charge station exactly and rapidly according to a charge station position guidance signal emitted from the charge station. The mobile robot charge station return system includes a charge station for transmitting charge station position guidance signals to different areas in such a way that different emitting distances of the charge station position guidance signals change according to a predetermined time period; and a mobile robot for receiving the charge station position guidance signals, calculating direction and distance information, and returning to the charge station according to the calculated direction and distance information.
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Citations
14 Claims
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1. A mobile robot charge station return system comprising:
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a charge station for transmitting charge station position guidance signals to different areas in such a way that different emitting distances of the charge station position guidance signals change according to a predetermined time period; and a mobile robot for receiving the charge station position guidance signals, calculating direction and distance information, and returning to the charge station according to the calculated direction and distance information, wherein the charge station includes; a guidance signal transmitter including a plurality of infrared light emitting sections formed at a front of the charge station for transmitting the charge station position guidance signals to different areas, and a drive power control circuit for adjusting an amplitude of a drive power applied to the infrared light emitting sections; and a controller for outputting a control signal to control the amplitude of the drive power with a predetermined period, and wherein the drive power control circuit includes; first resistors connected to one terminal of the infrared light emitting sections, which is connected to a power supply in a forward direction; second resistors having one terminal connected to an output terminal of the controller; and a transistor having a collector, an emitter and a base, the collector connected to another terminal of the first resistor, the emitter connected to a ground, and the base connected to another terminal of the second resistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mobile robot charge station return system comprising:
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a charge station for outputting charge station position guidance signals having different transmitting distances by adjusting an amplitude of a drive power applied to a plurality of infrared light emitting sections for transmitting charge station position guidance signals having different frequencies; and a mobile robot for calculating direction information of the charge station using the frequencies of the charge station position guidance signals, calculating distance information with the charge station according to reception or non-reception of the charge station position guidance signals having different transmitting distances, and returning to the charge station according to the calculated direction and distance information, wherein the charge station includes; a drive power control circuit for controlling an amplitude of a drive power applied to the infrared light emitting sections, the drive power control circuit including; first resistors connected to one terminal of the infrared light emitting sections, which is connected to a power supply in a forward direction; second resistors having one terminal connected to an output terminal of the controller; and a transistor having a collector, an emitter and a base, the collector connected to another terminal of the first resistor, the emitter connected to a ground, and the base connected to another terminal of the second resistor. - View Dependent Claims (11, 12, 13, 14)
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Specification