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1. WO2020109181 - SENSOR ARRANGEMENT FOR CAPACITIVE POSITION DETECTION OF A HAND ON A STEERING WHEEL

Publication Number WO/2020/109181
Publication Date 04.06.2020
International Application No. PCT/EP2019/082314
International Filing Date 22.11.2019
IPC
B62D 1/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
1Steering controls, i.e. means for initiating a change of direction of the vehicle
02vehicle-mounted
04Hand wheels
06Rims, e.g. with heating means; Rim covers
CPC
B62D 1/046
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
1Steering controls, i.e. means for initiating a change of direction of the vehicle
02vehicle-mounted
04Hand wheels
046Adaptations on rotatable parts of the steering wheel for accommodation of switches
B62D 1/06
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
1Steering controls, i.e. means for initiating a change of direction of the vehicle
02vehicle-mounted
04Hand wheels
06Rims, e.g. with heating means; Rim covers
H03K 17/955
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and –breaking
94characterised by the way in which the control signals are generated
945Proximity switches
955using a capacitive detector
H03K 17/9622
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and –breaking
94characterised by the way in which the control signals are generated
96Touch switches
962Capacitive touch switches
9622using a plurality of detectors, e.g. keyboard
Applicants
  • IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. [LU]/[LU]
Inventors
  • FABER, Thomas
  • FAVALLI, Gianluca
  • GIERENS, Heinrich
  • LAMESCH, Laurent
  • PUETZ, Michael
Agents
  • BEISSEL, Jean
  • KIHN, Pierre
  • KIHN, Henri
  • LAMBERT, Romain
  • OCVIRK, Philippe
Priority Data
LU10101827.11.2018LU
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SENSOR ARRANGEMENT FOR CAPACITIVE POSITION DETECTION OF A HAND ON A STEERING WHEEL
(FR) ARRANGEMENT DE CAPTEURS POUR LA DÉTECTION DE POSITION CAPACITIVE D'UNE MAIN SUR UN VOLANT DE DIRECTION
Abstract
(EN)
The invention relates to a sensor arrangement (1) for capacitive position detection of a hand (31) on a steering wheel (20), comprising: - a plurality of capacitive sensors (2 - 6) disposed along a detection surface (21), which is an outer surface of the steering wheel (20), each sensor (2 - 6) comprising at least one sensor electrode (2a - 6a); and - a measurement device (10) electrically connected to the sensors (2 - 6). In order to increase the reliability of capacitive hand detection on a steering wheel, the invention provides that the measurement device (10) is adapted to perform a sequence of detection operations, and in each detection operation, to activate at least one sensor (2 - 6) by applying a detection signal to its at least one sensor electrode (2a - 6a) in order to capacitively detect the hand (31) while grounding at least one other sensor (2 - 6) by connecting at least one of its sensor electrodes (2a - 6a) to ground, and to activate different sensors (2 - 6) in consecutive detection operations.
(FR)
L'invention concerne un arrangement de capteurs (1) pour la détection de position capacitive d'une main (31) sur un volant de direction (20), comprenant : une pluralité de capteurs capacitifs (2 - 6) disposés le long d'une surface de détection (21), qui est une surface extérieure du volant de direction (20), chaque capteur (2 - 6) comprenant au moins une électrode de capteur (2a - 6a) ; et un dispositif de mesure (10) relié électriquement aux capteurs (2 - 6). L'invention vise à augmenter la fiabilité de la détection capacitive de la main sur un volant de direction et se caractérise à cet effet en ce que le dispositif de mesure (10) est conçu pour exécuter une séquence d'opérations de détection et, dans chaque opération de détection, activer au moins un capteur (2 - 6) en appliquant un signal de détection à sa dite électrode de capteur (2a - 6a) afin de détecter de manière capacitive la main (31) tout en reliant à la masse au moins un autre capteur (2 - 6) en reliant au moins l'une de ses électrodes de capteur (2a - 6a) à la masse, et pour activer différents capteurs (2 - 6) dans des opérations de détection consécutives.
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