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1. WO2020114858 - CAPACITIVE SENSOR GUARD DIAGNOSTICS FROM REDUNDANT COUPLING MEASUREMENT

Publication Number WO/2020/114858
Publication Date 11.06.2020
International Application No. PCT/EP2019/082735
International Filing Date 27.11.2019
IPC
B60N 2/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
2Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
B60R 21/015 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
21Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
01Electrical circuits for triggering safety arrangements in case of vehicle accidents or impending vehicle accidents
015including means for detecting the presence or position of passengers, passenger seats or child seats, e.g. for disabling triggering
CPC
B60N 2/002
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
2Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
002Passenger detection systems
B60R 21/01532
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
21Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
01Electrical circuits for triggering ; passive; safety arrangements, ; e.g. airbags, safety belt tighteners,; in case of vehicle accidents or impending vehicle accidents
015including means for detecting the presence or position of passengers, passenger seats or child seats ; , and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
01512Passenger detection systems
0153using field detection presence sensors
01532using electric or capacitive field sensors
Applicants
  • IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. [LU]/[LU]
Inventors
  • ALTHAUS, Frank
  • FABER, Thomas
  • HOLZAPFEL, Erik
  • PUETZ, Michael
Agents
  • BEISSEL, Jean
  • KIHN, Pierre
  • KIHN, Henri
  • LAMBERT, Romain
  • OCVIRK, Philippe
Priority Data
LU10102303.12.2018LU
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CAPACITIVE SENSOR GUARD DIAGNOSTICS FROM REDUNDANT COUPLING MEASUREMENT
(FR) DIAGNOSTIC DE PROTECTION DE CAPTEUR CAPACITIF À PARTIR D'UNE MESURE DE COUPLAGE REDONDANT
Abstract
(EN)
A method of operating a capacitive sensing device (10) for diagnosing a galvanic connection of at least one guard electrode (36, 36', 36") is presented. The capacitive sensing device (10) comprises at least one sense-guard capacitive sensor (28, 30, 32) and a capacitive measurement circuit (12) that is configured for determining a complex impedance of an unknown capacitance from a complex sense current flowing in the at least one sense-guard capacitive sensor (28, 30, 32). The sense-guard capacitive sensor (28, 30, 32) includes a first electrically conductive sense electrode (34) and a first electrically conductive guard electrode (36) and at least a second electrically conductive sense electrode (341), which is galvanically separated from the first sense electrode (34), and at least a second electrically conductive guard electrode (361, 36").
(FR)
L'invention concerne un procédé de fonctionnement d'un dispositif de détection capacitif (10) pour diagnostiquer une connexion galvanique d'au moins une électrode de protection (36, 36', 36"). Le dispositif de détection capacitif (10) comprend au moins un capteur capacitif de protection de détection (28, 30, 32) et un circuit de mesure capacitif (12) qui est conçu pour déterminer une impédance complexe d'une capacité inconnue à partir d'un courant de détection complexe circulant dans le ou les capteurs capacitifs de protection de détection (28, 30, 32). Le capteur capacitif de protection de détection (28, 30, 32) comprend une première électrode de détection électroconductrice (34) et une première électrode de protection électroconductrice (36) et au moins une seconde électrode de détection électroconductrice (341), qui est séparée galvaniquement de la première électrode de détection (34) et au moins une seconde électrode de protection électroconductrice (361, 36").
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