Celestial navigation system for an autonomous robot

  • US 8,594,840 B1
  • Filed: 03/31/2009
  • Issued: 11/26/2013
  • Est. Priority Date: 07/07/2004
  • Status: Active Grant
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First Claim
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1. An autonomous robot system comprising:

  • a transmitter disposed within a working area and comprising first and second emitters for emitting respective first and second signals onto a ceiling above the working area; and

    a mobile robot moving within the working area relative to the transmitter, the mobile robot comprising;

    a robot body;

    a drive system disposed on the robot body and configured to maneuver the robot over a surface within the working area; and

    a navigation system in communication with the drive system, the navigation system comprising;

    a receiver responsive to reflections of the first and second emitted signals from the ceiling; and

    a processor connected to the receiver and configured to determine a relative location of the robot within the working area in response to the receiver responding to the reflections of the first and second emitted signals;

    wherein the first and second emitted signals are directable onto the ceiling.

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