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Capacitor array sensors tactile and proximity sensing and methods of use thereof

  • US 4,766,389 A
  • Filed: 09/03/1986
  • Issued: 08/23/1988
  • Est. Priority Date: 09/03/1986
  • Status: Expired due to Term
First Claim
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1. A capacitance sensor array for proximity and tactile sensing of properties of an object comprising a plurality of capacitor plate elements formed in an array of known topology, means for actively connecting each of said plate elements and said object to one of a plurality of corresponding oscillator circuits so that the oscillation frequency of each said circuit is a function of the capacitance between each said plate element and said object, when said sensor array and said object are in contact, and means for generating an output from said sensor which is a function of the tactile properties of said object from the said plurality of oscillator circuits.

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