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Optical tracking robot system

  • US 4,627,511 A
  • Filed: 10/07/1985
  • Issued: 12/09/1986
  • Est. Priority Date: 10/18/1984
  • Status: Expired due to Term
First Claim
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1. An optical tracking robot system comprising:

  • light emitting means attached to a target, said light emitting means including a source of operating voltage;

    at least one light emitting element coupled to said operating voltage source for emitting a light beam modulated into pulses; and

    modulator means for modulating the operating voltage of said light emitting element impulses;

    tracking sensor means for monitoring the light beam emitted from said light emitting means and including means for generating drive control signals to determine the drive direction of a tracking robot;

    approach sensor means including a light receiving element provided at a front portion of the tracking robot at a different height from said light emitting element, for detecting an approach to the target;

    aperture means provided in front of said light receiving element for restricting the light receiving area of said light receiving element such that an approach detection distance from the target can be adjusted to a desired value;

    an amplifier detector means including means for amplifying pulse signals received by said light receiving element, means coupled to said amplifying means for demodulating the amplified signals by means of a band-pass filter, and output means coupled to said demodulating means for generating an output signal; and

    comparator means for comparing the level of the output signal generated by said output means of said amplifier detector means with a predetermined threshold level and generating stop control signals to stop the tracking robot based on the result of said comparison when the tracking robot approaches the target;

    travel control means for receiving said drive control signals from said tracking sensor means and said stop control signals from said approach sensor means and for generating drive signals and stop signals; and

    driver means for driving the tracking robot in response to said drive signals from said travel control means and for stopping the robot in response to said stop signals from said travel control means.

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