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Capacitive proximity tactile sensor

  • US 8,627,716 B2
  • Filed: 02/05/2010
  • Issued: 01/14/2014
  • Est. Priority Date: 02/06/2009
  • Status: Active Grant
First Claim
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1. A capacitive proximity tactile sensor comprising an electrode layer and a compressible non-conductive layer exposed to a conductive object, said compressible layer defining a progressive compressibility range of contact forces, wherein upon application of a contact force within said progressive compressibility range by said conductive object onto said compressible layer, a capacitance sensor is formed between said electrode layer and said conductive object with said compressible non-conductive layer therebetween, whereby said sensor generates two signals:

  • a location of touch signal and a force of touch signal representative of said contact force, said force of touch signal is generated by measuring capacitance between said electrode layer and said conductive object indicating a degree of compression of said compressible non-conductive layer by said conductive object.

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