Center of weight sensor

  • US 5,821,633 A
  • Filed: 01/08/1997
  • Issued: 10/13/1998
  • Est. Priority Date: 01/08/1997
  • Status: Expired due to Term
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First Claim
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1. A sensing system for determining the magnitude and localized equivalent point load position in two-dimensional space of a distributed load comprising:

  • (a) a plurality of sensing elements each having a predetermined area and located in a two-dimensional area subject to distributed loads, each sensing element further producing an output signal proportional to an integral of the applied stress over the area of the sensing element; and

    (b) means for approximating the center of force or position of the equivalent point load in said two-dimensional area by weighting and summing the output signals from said sensing elements that approximate the output of two idealized sensors extending respectively to the X and Z boundaries of said two-dimensional space and each of said two idealized sensors producing an output signal that is weighted along the X and Z axes respectively to get two numerators, and dividing each of said numerators by a denominator which is obtained by summing the output signals from said sensing elements that approximate the output of one idealized sensor extending to the X and Z boundaries of said two-dimensional space and which produces an output signal that is uniformly weighted over both the X and Z directions.

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