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Capacitive sensor for morphological discrimination of a motor vehicle seat occupant

  • US 8,033,182 B2
  • Filed: 07/21/2006
  • Issued: 10/11/2011
  • Est. Priority Date: 07/28/2005
  • Status: Expired due to Fees
First Claim
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1. A detection assembly for detecting a morphology of a person, comprising:

  • a sensor that comprises (i) first and second main linear electrodes covering different zones of a plane, and (ii) a third auxiliary linear electrode having substantially at least an open loop shape and almost entirely surrounding the first and second main electrodes in said plane, anda processing unit connected to the electrodes, wherein the processing unit is for;

    (i) powering the electrodes at controlled voltage levels,(ii) making use of signals taken from the electrodes in a form of ratios between two of the signals, and(iii) delivering binary signals representing a percentage by which a main electrode is covered by comparison of a signal taken from the main electrodes with a predetermined threshold, and analog signals representing a percentage of covering of at least one electrode.

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