Self-calibrating magnetic field monitor
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United States of America Patent
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May 20, 2014
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app pub date -
Feb 7, 2012
filing date -
May 1, 2008
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Abstract
A self-calibrating magnetic field monitor is disclosed. In one embodiment, a magnetic field sensor repeatedly generates an electronic signal related to the magnetic field. In addition, a calibration module generates a relative baseline signal based on an average value of the electronic signals for a given time period. A comparator compares the electronic signal with the relative baseline signal and generating an output signal if a difference in the comparing is greater than or equal to a threshold.
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