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User carried sensor for detecting displacement relative to the ground

  • US 4,876,500 A
  • Filed: 08/03/1988
  • Issued: 10/24/1989
  • Est. Priority Date: 08/03/1988
  • Status: Expired due to Fees
First Claim
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1. A motion-sensing arrangement, comprising:

  • (a) sensor means positioned in a predetermined relationship relative to the body of a user performing a movement relative to the ground, said sensor means being operative for sensing changes in the elevation, and in the size of the contact area, between the user and the ground, said sensor means being further operative for generating, in response to said sensing, an electrical signal having a variable voltage amplitude proportional to said changes;

    (b) converter means for converting the variable electrical signal into a rectified electrical signal having a component with a generally fixed voltage amplitude; and

    (c) comparator means operatively connected to the converter means, and operative for generaing an output signal when the generally fixed voltage component falls within a predetermined voltage range.

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