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1. (WO2020002079) CAPACITIVE DEVICE FOR DETECTING THE PRESENCE OF A PERSON CLOSE TO OR IN CONTACT WITH A COMPONENT OF A MOTOR VEHICLE
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2020/002079 International Application No.: PCT/EP2019/066177
Publication Date: 02.01.2020 International Filing Date: 19.06.2019
IPC:
B62D 1/04 (2006.01) ,B62D 1/06 (2006.01) ,G01R 35/00 (2006.01) ,G01R 27/02 (2006.01) ,B60W 40/08 (2012.01) ,G01D 18/00 (2006.01) ,G01V 13/00 (2006.01) ,A61B 5/00 (2006.01) ,G01V 3/08 (2006.01) ,G01R 31/00 (2006.01) ,G01R 27/26 (2006.01) ,B60R 21/015 (2006.01) ,G01D 5/24 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
62
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
D
MOTOR VEHICLES; TRAILERS
1
Steering controls, i.e. means for initiating a change of direction of the vehicle
02
vehicle-mounted
04
Hand wheels
B PERFORMING OPERATIONS; TRANSPORTING
62
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
D
MOTOR VEHICLES; TRAILERS
1
Steering controls, i.e. means for initiating a change of direction of the vehicle
02
vehicle-mounted
04
Hand wheels
06
Rims, e.g. with heating means; Rim covers
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
35
Testing or calibrating of apparatus covered by the other groups of this subclass
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
27
Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
02
Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
W
CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
40
Estimation or calculation of driving parameters for road vehicle drive control systems not related to the control of a particular sub-unit
08
related to drivers or passengers
G PHYSICS
01
MEASURING; TESTING
D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
18
Testing or calibrating apparatus or arrangements provided for in groups G01D1/-G01D15/124
G PHYSICS
01
MEASURING; TESTING
V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
13
Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/-G01V11/144
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
5
Measuring for diagnostic purposes; Identification of persons
G PHYSICS
01
MEASURING; TESTING
V
GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
08
operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31
Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
27
Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
02
Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
26
Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
R
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
21
Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
01
Electrical circuits for triggering safety arrangements in case of vehicle accidents or impending vehicle accidents
015
including means for detecting the presence or position of passengers, passenger seats or child seats, e.g. for disabling triggering
G PHYSICS
01
MEASURING; TESTING
D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5
Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12
using electric or magnetic means
14
influencing the magnitude of a current or voltage
24
by varying capacitance
Applicants:
AUTOLIV DEVELOPMENT AB [SE/SE]; Wallentinsvägen 22 44783 Vargarda, SE
Inventors:
SABOURIN, Pierre; FR
Agent:
KOCH, Henning; DE
Priority Data:
185574327.06.2018FR
Title (EN) CAPACITIVE DEVICE FOR DETECTING THE PRESENCE OF A PERSON CLOSE TO OR IN CONTACT WITH A COMPONENT OF A MOTOR VEHICLE
(FR) DISPOSITIF CAPACITIF DE DÉTECTION DE LA PRÉSENCE D'UNE PERSONNE À PROXIMITÉ OU AU CONTACT D'UN COMPOSANT D'UN VÉHICULE AUTOMOBILE
Abstract:
(EN) The invention relates to a capacitive detection device (100) comprising at least one electrode (20) of a capacitive sensor of said component, an alternating voltage source (23), a device (24) for measuring a complex value of impedance or admittance between the detection electrode (20) and an electrical circuit reference point and a calibration resistance (Rc1, Rc2), and a switching device (26, SW1-SW6) arranged so as to connect the voltage source (23) to the electrode (20), in the measurement mode, and to connect the voltage source (23) to the calibration resistance (Rc1, Rc2)and disconnect the voltage source from the electrode (20), in the calibration mode. The measuring device (24) is arranged so as to measure a first complex value of the calibration resistance (Rc1, Rc2) during operation in the calibration mode, to measure a second complex value between the electrode (20) and the electrical circuit reference point during operation in the measurement mode, and to correct the second measured complex value according to the first measured complex value.
(FR) Le dispositif capacitif de détection (100) comprend au moins une électrode (20) d'un capteur capacitif équipant ledit composant, une source de tension alternative (23), un dispositif (24) de mesure d'une valeur complexe d'impédance ou d'admittance entre l'électrode de détection (20) et un point de référence de circuit électrique et une résistance de calibration (Rc1, Rc2), et un dispositif de commutation (26, SW1-SW6) agencé pour connecter la source de tension (23) à l'électrode (20), en mode mesure, et pour connecter la source de tension (23) à la résistance de calibration (Rc1, Rc2) et déconnecter la source de tension de l'électrode (20), en mode calibration. Le dispositif de mesure (24) est agencé pour mesurer une première valeur complexe de la résistance de calibration (Rc1, Rc2), lors d'un fonctionnement en mode calibration; mesurer une deuxième valeur complexe entre l'électrode (20) et le point de référence de circuit électrique lors d'un fonctionnement en mode mesure, et corriger la deuxième valeur complexe mesurée en fonction de la première valeur complexe mesurée.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)