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1. (WO2018219889) METHOD FOR ESTIMATING THE POSITION OF A MAGNET COMPRISING A PHASE FOR IDENTIFYING A MAGNETIC DISTURBANCE
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Pub. No.: WO/2018/219889 International Application No.: PCT/EP2018/063981
Publication Date: 06.12.2018 International Filing Date: 29.05.2018
IPC:
G06F 17/10 (2006.01) ,G06F 3/046 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
17
Digital computing or data processing equipment or methods, specially adapted for specific functions
10
Complex mathematical operations
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
3
Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01
Input arrangements or combined input and output arrangements for interaction between user and computer
03
Arrangements for converting the position or the displacement of a member into a coded form
041
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
046
by electromagnetic means
Applicants:
ISKN [FR/FR]; 22 Avenue Benoît Frachon 38400 Saint-Martin-d'Hères, FR
Inventors:
DUPRE LA TOUR, Jean-Marie; FR
HAUTSON, Tristan; FR
Agent:
LE GOALLER, Christophe; FR
DUPONT, Jean-Baptiste; FR
COLOMBO, Michel; FR
Priority Data:
175480631.05.2017FR
Title (EN) METHOD FOR ESTIMATING THE POSITION OF A MAGNET COMPRISING A PHASE FOR IDENTIFYING A MAGNETIC DISTURBANCE
(FR) PROCEDE D'ESTIMATION DE LA POSITION D'UN AIMANT COMPORTANT UNE PHASE D'IDENTIFICATION D'UN PERTURBATEUR MAGNETIQUE
Abstract:
(EN) The invention relates to a method for estimating the position of a magnet (2) using a tracking device comprising an array of magnetometers, the method comprising phases of determining an initial state vector associated with the magnet, of measuring a useful magnetic field, of estimating a magnetic field, of calculating a bias beween the measured magnetic field and the estimated magnetic field, and of updating the state vector on the basis of the bias. It also comprises an identifying phase comprising a step of identifying a magnetic disturbance on the basis of an indicator calculated depending on an estimated magnetic field and a measured magnetic field.
(FR) L'invention porte sur un procédé d'estimation de la position d'un aimant (2) par un dispositif de suivi comportant un réseau de magnétomètres, le procédé comportant les phases de détermination d'un vecteur d'état initial associé à l'aimant, de mesure d'un champ magnétique utile, d'estimation d'un champ magnétique, de calcul d'un biais à partir du champ magnétique mesuré et du champ magnétique estimé, et de mise à jour du vecteur d'état à partir du biais. Il comporte également une phase d'identification comportant une étape d'identification d'un perturbateur magnétique à partir d'un indicateur calculé en fonction d'un champ magnétique estimé et d'un champ magnétique mesuré.
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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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)