SELF-CALIBRATING MAGNETIC FIELD MONITOR

摘要

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.

主权项

1. A computer-implemented method for monitoring a magnetic field in an environment for magnetic field fluctuations, said method comprising:
repeatedly generating an electronic signal to represent said magnetic field; generating a relative baseline signal based on an average value of said electronic signal for a time period; comparing said electronic signal with said relative baseline signal; and generating said output signal if a difference in said comparing is greater than or equal to a threshold.