×

Position detection apparatus including a circuit for receiving a plurality of output signal values and fitting the output signal values to a curve

  • US 5,589,769 A
  • Filed: 09/30/1994
  • Issued: 12/31/1996
  • Est. Priority Date: 09/30/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. Apparatus for determining a position of a member movable along a defined path, comprising:

  • means for producing a magnetic field attached to said member;

    an array of magnetic field transducers located adjacent said defined path, each transducer comprising magnetoresistive material and providing a bipolar output signal as said means for producing a magnetic field approaches, passes and moves away from said each transducer, with said magnetic field of sufficient strength to saturate said magnetoresistive material;

    said array of transducers providing a plurality of output signal values for a first position of said means for producing a magnetic field; and

    electronic means for receiving said plurality of output signal values and fitting said plurality of output signal values to a first curve and using a crossover point of said first curve to determine said first position.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×