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Automated warehouse vehicle position determining system

  • US 4,218,616 A
  • Filed: 03/27/1978
  • Issued: 08/19/1980
  • Est. Priority Date: 03/27/1978
  • Status: Expired due to Term
First Claim
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1. A vehicle position determining system comprising:

  • a vehicle arranged for movement along a path;

    an electro-magnetic wave reflector retaining member;

    one or more electro-magnetic wave reflectors supported by said retaining member, said reflectors arranged in a location information containing pattern;

    electro-magnetic wave transceiver means;

    one of said retaining members and said transceiver means being coupled to said vehicle and the other being fixedly positioned whereby said transceiver means and said retaining member are arranged for relative movement into and out of alignment with one another, said transceiver means adapted to provide an output signal related to said pattern upon the alignment of said transceiver means and said reflectors;

    an activation electro-magnetic wave reflector having a reflector expanse which is less than the reflective expanse of the reflectors arranged in said location information containing pattern supported by said retaining member; and

    wherein said electro-magnetic wave transceiver means includes an activation transceiver,the alignment of said activation transceiver with said activation reflector providing a signal adapted to activate the remainder of said transceiver means whereby said transceiver means is permitted to provide said output signal.

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