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1. (WO2017136145) CIRCULAR VERTICAL HALL (CVH) SENSING ELEMENT WITH SIGNAL PROCESSING AND ARCTANGENT FUNCTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/136145 International Application No.: PCT/US2017/014060
Publication Date: 10.08.2017 International Filing Date: 19.01.2017
IPC:
G01D 5/14 (2006.01)
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
Applicants:
ALLEGRO MICROSYSTEMS, LLC [US/US]; 115 Northeast Cutoff Worcester, Massachusetts 01606, US
Inventors:
ALPAGO, Octavio, H.; AR
ALVES, Ezequiel; AR
ROMERO, Hernán , D.; AR
Agent:
MILMAN, Seth, A.; US
WHITE, James, M.; US
DURKEE, Paul, D.; US
ROBINSON, Kermit; US
CROWLEY, Judith, C.; US
MOOSEY, Anthony, T.; US
MOFFORD, Donald, F.; US
DALY, Christopher, S.; US
DOWNING, Marianne, M.; US
LANGE, Kristoffer, W.; US
CROOKER, Albert, C.; US
Priority Data:
15/012,14201.02.2016US
Title (EN) CIRCULAR VERTICAL HALL (CVH) SENSING ELEMENT WITH SIGNAL PROCESSING AND ARCTANGENT FUNCTION
(FR) ÉLÉMENT DE DÉTECTION À EFFET HALL VERTICAL CIRCULAIRE (CVH) AVEC TRAITEMENT DU SIGNAL ET FONCTION ARC-TANGENTE
Abstract:
(EN) A magnetic field sensor includes a circular vertical Hall (CVH) sensing element to produce a signal representing an external magnetic field as detected by the CVH sensing element, a sigma-delta analog-to-digital converter to generate a converted signal, modulators to produce quadrature modulated signals from the converted signal, and a processor to produce an estimated angle of the external magnetic field using the quadrature modulated signals. An arctangent function may be used to calculate the estimated angle. A sliding window integration scheme may be used over one or more CVH cycles.
(FR) La présente invention concerne un capteur de champ magnétique comprenant un élément de détection à effet Hall vertical circulaire (CVH) pour produire un signal représentant un champ magnétique externe détecté par l'élément de détection CVH, un convertisseur analogique/numérique sigma-delta pour générer un signal converti, des modulateurs pour produire des signaux modulés en quadrature à partir du signal converti, et un processeur pour produire un angle estimé du champ magnétique externe en utilisant les signaux modulés en quadrature. Une fonction arc-tangente peut être utilisée pour calculer l'angle estimé. Un schéma d'intégration de fenêtre glissante peut être utilisé sur un ou plusieurs cycles CVH.
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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, 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: English (EN)
Filing Language: English (EN)
Also published as:
EP3408618