Capacitive sensor for morphological discrimination of a motor vehicle seat occupant
First Claim
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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Accused Products
Abstract
A detection assembly for detecting a morphology of a person is provided. The assembly includes a sensor and a processing unit. The sensor includes (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. The processing unit is connected to the electrodes and is for (i) powering the electrodes at controlled voltage levels, (ii) making use of signals taken from the electrodes in the 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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Citations
29 Claims
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1. A detection assembly for detecting a morphology of a person, comprising:
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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, and a 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A sensor for a detection assembly for detecting a morphology of a person, the sensor comprising:
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(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, wherein the assembly further comprises a 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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19. A motor vehicle seat that comprises at least one detection assembly for detecting a morphology of a person, comprising:
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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, and a 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. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification