5.4: A Textile Based Capacitive Pressure Sensor

  • Sergio M
  • Manaresi N
  • Tartagni M
 et al. 
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Abstract

Abstract This paper introduces an approach for decoding the pressure information exerted over a broad piece of fabric by means of capacitive sensing. The proposed sensor in- cludes a distributed passive array of capacitors (i.e. an array where no active elements are involved), whose ca- pacitance depends on the pressure exerted on the textile surface, and an electronic system that acquire and pro- cess the subsequent capacitance variations. Capacitors can be made in different ways, though, in our demon- strator they have been implemented between rows and columns of conductive fibers patterned on the two op- posite sides of an elastic synthetic foam. Measures per- formed over a prototype has been demonstrated the re- liability of the approach by detecting pressure images at 3 F/s and by measuring capacitances as low as hundreds of fl? spaced apart at meters of distance.

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Authors

  • M Sergio

  • N Manaresi

  • M Tartagni

  • R Guerrieri

  • R Canegallo

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