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Measuring system

  • US 4,586,576 A
  • Filed: 09/28/1983
  • Issued: 05/06/1986
  • Est. Priority Date: 09/28/1982
  • Status: Expired due to Term
First Claim
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1. A measuring system comprising:

  • a magnetic pickup means for responding to magnetic fields;

    a magnetic scale formed by a succession of discrete, uniformly spaced scaling units each of which individually consists of a pair of opposed magnetic poles (N,S), the successive pairs of opposed magnetic poles alternating in their magnetic polarities in a direction which is the same as or substantially parallel to a direction in which a deformable member is deformed, said magnetic scale being arranged to be displaced relative to the magnetic pickup means by an amount related to a deformation of the deformable member whereby the magnetic pickup means successively senses the passage of the magnetic scaling units; and

    circuit means for counting the number of said magnetic scaling units sensed and producing an electrical output signal representing said deformation, or a physical quantity which is a function thereof.

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