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Computer-controlled power wheelchair navigation system

  • US 7,383,107 B2
  • Filed: 07/14/2004
  • Issued: 06/03/2008
  • Est. Priority Date: 07/02/2002
  • Status: Expired due to Fees
First Claim
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1. A wheeled device navigation system comprising:

  • a motorized wheeled device;

    at least one computer having software that performsnavigational functions,teaching functions,obstacle detection,supervisory tasks, anddiagnostic analysis;

    at least one video camera removably attached to said wheeled device for perceiving visual surroundings of said wheeled device;

    at least one proximity sensor;

    at least one rotation sensor;

    at least one cue sensor removably attached to said wheeled device for sensing surroundings of said wheeled device;

    at least one cue marker disposable in areas surrounding said wheeled device and configured to output a signal to be sensed by said cue sensor; and

    an input device including one of a switch and a microphone,wherein said at least one rotation sensor, said at least one cue sensor and said input device are interfaced to said at least one computer which runs the specialized software, and said at least one proximity sensor performs sensing operations during performance of said teaching functions for thereby permitting avoidance of wheeled device collision with obstacles during navigation of said wheeled device through a taught trajectory and allowing for close approach of said wheeled device to solid bodies present during performance of said teaching functions.

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