发明名称 |
CONTINUOUSLY CALIBRATED MAGNETIC FIELD SENSOR |
摘要 |
<p>A magnetic field sensor comprises a reference magnetic field generator (8), a magnetic field sensing cell (6) including Hall effect sensing elements (12), and a signal processing circuit (4) connected to the output (11) of the magnetic field sensing cell and comprising one or more feedback lines (27, 28) for correcting error fluctuations in the transfer characteristic of the magnetic field sensor. The reference magnetic field generator is adapted to generate a frequency modulated reference magnetic field. The signal processing circuit further includes a modulator connected to the magnetic field sensing cell, adapted to modulate the output signal thereof at a frequency different from the modulation frequency of the reference magnetic field generator.</p> |
申请公布号 |
WO2006056829(A1) |
申请公布日期 |
2006.06.01 |
申请号 |
WO2005IB02856 |
申请日期 |
2005.09.14 |
申请人 |
LIAISONS ELECTRONIQUES-MECANIQUES LEM S.A.;PASTRE, MARC;BLANCHARD, HUBERT;KAYAL, MAHER |
发明人 |
PASTRE, MARC;BLANCHARD, HUBERT;KAYAL, MAHER |
分类号 |
G01R33/07 |
主分类号 |
G01R33/07 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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