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High accuracy pedometer and calibration method

  • US 5,117,444 A
  • Filed: 07/30/1990
  • Issued: 05/26/1992
  • Est. Priority Date: 07/30/1990
  • Status: Expired due to Fees
First Claim
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1. A pedometer, comprising:

  • an output means to communicate numbers to a user;

    a switching means to select among a plurality of functions and to set a plurality of event values;

    at least one memory to store an event;

    a computing means for calculating the activity of the user from an output pulse stream from an acceleration field detection means for detecting motions of the user;

    an enclosure comprising a housing with an attached flip open door, said flip open door having a means to reduce the sensitivity of said acceleration field detection means; and

    a calibration means for accurately correlating the acceleration field detection means output to activities of a user, the calibration means able to count the total number of output pulses from the acceleration field detection means and to thereafter use said total as being equal to a fraction of a standard unit of measure, the calibration means able to divide said output pulses by a number.

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