Autonomous robot auto-docking and energy management systems and methods

  • US 8,390,251 B2
  • Filed: 08/06/2007
  • Issued: 03/05/2013
  • Est. Priority Date: 01/21/2004
  • Status: Active Grant
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First Claim
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1. An autonomous robotic device responsive to signals from a base station, the robotic device comprising:

  • electric contacts for contacting a charging terminal of a base station; and

    a microprocessor that, based on a measured robotic device energy level, instructs the robotic device to;

    avoid a short-range omni-directional base station signal to avoid contact with the base station when the measured energy level is above a predetermined energy level;

    seek the short-range omni-directional base station signal and a directional base station signal extending beyond the range of the omni-directional signal when the measured energy level is below the predetermined energy level, including following the omni-directional signal to encounter the directional signal; and

    follow the directional signal in order to dock with the base station for charging.

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