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1. (WO2007000746) CIRCUIT CONFIGURATION FOR OBTAINING A BINARY OUTPUT SIGNAL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/000746 International Application No.: PCT/IB2006/052155
Publication Date: 04.01.2007 International Filing Date: 28.06.2006
IPC:
G01R 33/02 (2006.01) ,G01D 3/036 (2006.01) ,G01D 5/244 (2006.01)
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33
Arrangements or instruments for measuring magnetic variables
02
Measuring direction or magnitude of magnetic fields or magnetic flux
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
3
Measuring arrangements with provision for the special purposes referred to in the subgroups of this group
028
mitigating undesired influences, e.g. temperature, pressure
036
on measuring arrangements themselves
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
244
influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
Applicants:
NXP B.V. [NL/NL]; High Tech Campus 60 NL-5656 AG Eindhoven, NL (AllExceptUS)
BUTZMANN, Stefan [DE/DE]; DE (UsOnly)
Inventors:
BUTZMANN, Stefan; DE
Agent:
VOLMER, Georg; Philips Intellectual Property & Standards Gmbh Weisshausstr. 2 52066 Aachen, DE
Priority Data:
05105780.029.06.2005EP
Title (EN) CIRCUIT CONFIGURATION FOR OBTAINING A BINARY OUTPUT SIGNAL
(FR) CONFIGURATION DE CIRCUIT PERMETTANT D'OBTENIR UN SIGNAL DE SORTIE BINAIRE
Abstract:
(EN) A circuit configuration for obtaining a binary output signal from a current signal delivered by a magnetic-field sensor comprises a magnetic-field sensor (1), which is supplied at two terminals (2; 3) with a supply voltage and which delivers from these terminals (2; 3) a current signal essentially alternating in pulse shape between two current values, a voltage-supply unit (50) to supply the magnetic-field sensor (1) with a stabilized supply voltage, a measuring device (51) for tapping the pulse-shaped current signal from the magnetic-field sensor (1) and for delivering a measuring signal, a signal-conditioning stage (52) for forming an analogue voltage signal from the measuring signal, an analogue/digital converter stage (6) for obtaining a digital voltage signal from the analogue voltage signal, a control stage (7) for obtaining a first and a second signal value from the digital voltage signal, wherein the signal values represent the two current values of the current signal, alternating in pulse shape, as supplied by the magnetic-field sensor (1), for supplying the currently obtained first and second signal values to a memory device (8) after every pulse- shaped change in the current signal and for identifying a digital changeover-threshold signal in accordance with a first algorithm from the real-time first and second signal values, the memory device (8) for storing the currently obtained first and second signal values, a digital/analogue converter stage (9) for obtaining an analogue changeover-threshold signal from the digital changeover-threshold signal and a comparator (10) for comparing the analogue voltage signal with the analogue changeover-threshold signal and for creating the binary output signal in accordance with this comparison.
(FR) L'invention concerne une configuration de circuit permettant d'obtenir un signal de sortie binaire d'un signal de courant transmis par un capteur de champ magnétique. La configuration de circuit présente: un capteur de champ magnétique (1) alimenté au niveau de deux bornes (2; 3) par une tension d'alimentation et produisant à partir de ces bornes (2; 3) un signal de courant alternant sensiblement en forme d'impulsions entre deux valeurs de courant; un bloc d'alimentation en tension (50) pour alimenter le capteur de champ magnétique (1) en tension d'alimentation stabilisée; un dispositif de mesure (51) pour dériver le signal de courant à impulsions mises en forme du capteur de champ magnétique (1) et pour transmettre un signal de mesure; un étage de conditionnement du signal (52) pour former un signal de tension analogique à partir du signal de mesure; un étage de conversion analogique-numérique (6) pour obtenir un signal de tension numérique du signal de tension analogique; un étage de commande (7) pour obtenir une première et une seconde valeurs de signal du signal de tension numérique, lesquelles valeurs de signal représentent les deux valeurs du courant du signal de courant alternant en forme d'impulsions, alimenté par le capteur de champ magnétique (1), pour transmettre la première et la seconde valeurs de signal ainsi obtenues à un dispositif à mémoire (8) après chaque changement par impulsions mises en forme dans le signal de courant, et pour identifier un signal de seuil de commutation numérique, selon un premier algorithme, à partir de la première et de la seconde valeurs de signal numérique en temps réel; le dispositif à mémoire (8) pour stocker la première et la seconde valeurs de signal ainsi obtenues; un étage de conversion numérique-analogique (9) pour obtenir un signal de seuil de commutation analogique du signal de seuil de commutation numérique; et un comparateur (10) pour comparer le signal de tension analogique au signal de seuil de commutation analogique et pour créer le signal de sortie binaire sur la base de cette comparaison.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, 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, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
KR1020080024221EP1899740JP2008545133US20100321224CN101213466