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Force-sensing net

  • US 9,764,212 B2
  • Filed: 12/09/2015
  • Issued: 09/19/2017
  • Est. Priority Date: 01/04/2012
  • Status: Active Grant
First Claim
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1. An apparatus comprising in combination:

  • (a) a net that has an aperture and that includes one or more cords, which one or more cords(i) are stretchable,(ii) are electrically conductive,(iii) have an electrical resistance that varies depending on the extent to which the one or more cords are stretched, and(iv) are positioned such that the one or more cords stretch when a ball passes through the aperture;

    (b) at least one sensor for measuring the electrical resistance; and

    (c) at least one processor for performing a computation that includes(i) calculating a duration of a time period, which period starts when the electrical resistance exceeds a baseline plus a first amount and ends when the electrical resistance is less than the baseline minus a second amount, and(ii) calculating, based at least in part on the duration of the time period, the translational kinetic energy of the ball that passes through the aperture.

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