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VEHICLE CONTROL SYSTEM

  • US 3,734,229 A
  • Filed: 04/11/1969
  • Issued: 05/22/1973
  • Est. Priority Date: 04/11/1969
  • Status: Expired due to Term
First Claim
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1. A vehicle control system for controlling the operation of a warehousing vehicle and directing its movement over at least two intersecting vehicle paths, comprising:

  • a first guidance conductor disposed along one of said paths and a second guidance conductor disposed along the other of said paths;

    means for electrically energizing said first and second conductors with signals of different frequencies to develop a first magnetic guidance field along said one path and a second magnetic guidance field along said other path;

    a transmission line extending longitudinally along both said paths and operative to develop an electro-magnetic communication field along the length thereof when energized by a first communication signal, said transmission line being further operative to conduct a first response signal induced therein by an electro-magnetic response field;

    a warehouse control unit including first control logic for developing said first communication signal and for receiving said first response signal; and

    a vehicle control unit carried by said vehicle including, a first transducer responsive to said communication field and operative to develop a second communication signal, said first transducer being additionally responsive to a second response signal and operative to develop said electro-magnetic response field, second control logic responsive to said second communication signal and operative to develop a function control signal, a path selection signal and said second response signal, function control means responsive to said function control signal and operative to control at least one function of said vehicle, a second transducer responsive to said magnetic guidance field and operative to develop guidance signals, and guidance means responsive to said guidance signals and said path selection signal and operative to guide said vehicle along a selected one of said paths.

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