Patent ID: 8768639

Claim:
A computer-implemented method for monitoring an environment with a dynamically adjustable magnetometer, said method comprising: periodically generating a first channel electronic signal representing a magnetic field of a monitored environment; periodically generating at least a second channel electronic signal representing said magnetic field of said monitored environment; calculating a delta change between the total value for a first period and the total value for a second period; summing an absolute value of said first channel electronic signal and an absolute value of said at least a second channel electronic signal over a period to generate a total value for a first period and the total value for a second period; generating an output if said total value is greater than a pre-defined threshold; utilizing an average total value for more than two periods to repeatedly generate a second floating average; calculating an average delta change between two different period second floating averages; and generating said output if the average delta change is greater than a pre-defined threshold.