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Magnetic position and orientation measurement system

  • US 4,622,644 A
  • Filed: 05/10/1984
  • Issued: 11/11/1986
  • Est. Priority Date: 05/10/1984
  • Status: Expired due to Fees
First Claim
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1. A magnetic position and orientation measurement system, comprising:

  • (a) a three dimensional space of known dimensions;

    (b) an object located within said space, the position and orientation of which is to be measured;

    (c) a single elongated bar permanent magnet fixedly attached to said object; and

    (d) a plurality of three-axis Hall-effect antennas mounted within said space for sensing the magnetic field of said permanent magnet, each axis of each said antenna being substantially parallel to a corresponding axis of all other ones of said antenna;

    (e) said antennas being connected to electrical circuitry enabling the inputting thereto of data related to the magnetic field of said permanent magnet as sensed by said antennas and therefrom calculating the position and orientation of said permanent magnet and thereby of said object.

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