Navigational control system for a robotic device

  • US 9,128,486 B2
  • Filed: 03/06/2007
  • Issued: 09/08/2015
  • Est. Priority Date: 01/24/2002
  • Status: Expired due to Fees
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First Claim
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1. A robotic system comprising:

  • a set of positionable emitting units including a first emitting unit adjacent to an interior wall of a room and a second emitting unit adjacent an interior doorway of the room and configured to emit a beam;

    a robot for movement within a defined interior working area of the room, wherein the defined interior working area is bounded in part by the interior wall;

    a first transmit-receive system for transmitting from the robot to the set of positionable emitting units, the first transmit-receive system including;

    a transmitting subsystem on the robot comprising an infrared (IR) beam emitter configured to emit a number of directed IR beams in a substantially planar manner about the robot into the defined working area, each directed IR beam having a predetermined emission pattern; and

    a receiving subsystem on the first emitting unit and configured to detect the directed IR beams; and

    a second transmit-receive system for transmitting from the set of positionable emitting units to the robot, the second transmit-receive system including;

    a transmitter disposed in the first emitting unit and configured to transmit a control signal; and

    an omnidirectional detector on the robot configured to receive the control signal and to detect the beam emitted by the second emitting unit;

    wherein the set of positionable emitting units includes a processor and a navigation control algorithm, and wherein the navigation control algorithm defines a predetermined triggering event for the robot and the predetermined triggering event is caused by the receiving subsystem on the first emitting unit receiving one or more of the directed IR beams from the robot, wherein the processor is configured to execute the navigation control algorithm by transmitting the control signal to the robot in response to determining that the predetermined triggering event has occurred; and

    wherein the robot is configured to receive the control signal from the set of positionable emitting units using the omnidirectional detector and, in response to receiving the control signal and detecting the beam emitted by the second emitting unit adjacent to the interior doorway, implement a triggered prescribed conduct that alters the movement activity of the robot by restricting the robot to one or more operations within the defined working area.

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