Robot cleaner, system thereof and method for controlling same

  • US 6,841,963 B2
  • Filed: 02/20/2002
  • Issued: 01/11/2005
  • Est. Priority Date: 08/07/2001
  • Status: Expired due to Fees
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First Claim
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1. A robot cleaner for performing a cleaning operation while wirelessly communicating with an external device, comprising:

  • a body;

    a driving portion that drives a plurality of wheels mounted on the body of the robot cleaner;

    a dust collecting portion mounted on the body, for collecting dust from a floor surface within a work area;

    a plurality of proximity switches arranged on a lower surface of the body facing the floor surface spaced at a predetermined distance from each other, the plurality of proximity switches being arranged and configured for detecting the existence of a metal member in a floor surface, the proximity switches facing in a direction toward the floor surface;

    a memory device for storing a travel trajectory by using output signals of the proximity switches;

    a controlling portion that generates the travel trajectory, stores the signals at the memory device, calculates a travel distance and a travel trajectory by using an output signal from the proximity switches during the travel of the robot cleaner, and controls the driving portion so that the driving portion performs an assigned job by using the calculated trajectory; and

    a wireless communication device disposed on board the robot cleaner body for wirelessly communicating with an external device.

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