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Применить Всего найдено 3. Отображено 3.
18-04-2013 дата публикации

AUTONOMOUSLY CALIBRATED MAGNETIC FIELD SENSOR

Номер: US20130093412A1
Автор: Ajbl Andrea, Anelli Giovanni Maria, Kayal Maher, Pastre Marc
Принадлежит: LEM INTELLECTUAL PROPERTY SA

Magnetic field sensor including a magnetic field sensing circuit () comprising a reference magnetic field generator () and a magnetic field sensing cell (), and a signal processing circuit () connected to the output of the magnetic field sensing cell and comprising a demodulator circuit and a gain correction feedback circuit () for correcting error fluctuations in the transfer characteristic of the magnetic field sensor. The sensor further comprises a reference current generator () configured to generate a reference current I ref, the reference current generator connected to the magnetic field sensing circuit () configured for generating the reference magnetic field B ref and to the gain correction feedback circuit configured for providing a reference signal (y) to which an output signal of the demodulator circuit may be compared. 112-. (canceled)13. Magnetic field sensor including a magnetic field sensing circuit comprising a reference magnetic field generator and a magnetic field sensing cell , and a signal processing circuit connected to the output of the magnetic field sensing cell and comprising a gain correction feedback circuit for correcting fluctuations in the transfer characteristic of the magnetic field sensor , characterized in that the sensor further comprises a reference current generator configured to generate a reference current I , the reference current generator connected to the magnetic field sensing circuit configured for generating the reference magnetic field Band to the gain correction feedback circuit configured for providing a reference signal yto which an output signal of the demodulator circuit may be compared.14. Sensor according to claim 13 , wherein the reference current generator is connected to a reference coil of the reference magnetic field generator via a current mirror circuit configured to copy the reference current Iand to generate a second reference current Ithat drives the coil to generate the reference magnetic field B.15. ...

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Номер записи: 1
05-01-2012 дата публикации

Autonomously calibrated magnetic field sensor

Номер: WO2012001612A1
Автор: Andrea Ajbl, Giovanni Maria Anelli, MAHER Kayal, Marc Pastre
Принадлежит: Liaisons Electroniques-Mecaniques LEM S.A.

Magnetic field sensor including a magnetic field sensing circuit (2) comprising a reference magnetic field generator (8) and a magnetic field sensing cell (6), and a signal processing circuit (4) connected to the output of the magnetic field sensing cell and comprising a demodulator circuit and a gain correction feedback circuit (30, 28, 47) for correcting error fluctuations in the transfer characteristic of the magnetic field sensor. The sensor further comprises a reference current generator (3)configured to generate a reference current I ref, the reference current generator connected to the magnetic field sensing circuit (2) configured for generating the reference magnetic field B ref and to the gain correction feedback circuit configured for providing a reference signal (y ref ) to which an output signal of the demodulator circuit may be compared.

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Номер записи: 2
02-08-2016 дата публикации

Autonomously calibrated magnetic field sensor

Номер: US09404991B2
Автор: Andrea Ajbl, Giovanni Maria Anelli, MAHER Kayal, Marc Pastre
Принадлежит: LEM INTELLECTUAL PROPERTY SA

Magnetic field sensor including a magnetic field sensing circuit ( 2 ) comprising a reference magnetic field generator ( 8 ) and a magnetic field sensing cell ( 6 ), and a signal processing circuit ( 4 ) connected to the output of the magnetic field sensing cell and comprising a demodulator circuit and a gain correction feedback circuit ( 30, 28, 47 ) for correcting error fluctuations in the transfer characteristic of the magnetic field sensor. The sensor further comprises a reference current generator ( 3 ) configured to generate a reference current I ref, the reference current generator connected to the magnetic field sensing circuit ( 2 ) configured for generating the reference magnetic field B ref and to the gain correction feedback circuit configured for providing a reference signal (y ref ) to which an output signal of the demodulator circuit may be compared.

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Номер записи: 3