US 2014/0195190 A1 · DYNAMICALLY SELF-ADJUSTING MAGNETOMETER

Abstract

A dynamically self-adjusting magnetometer is disclosed. In one embodiment, a first sample module periodically generates an electronic signal related to at least one magnetic field characteristic of a monitored environment. A second sample module periodically generates an electronic signal related to at least one magnetic field characteristic of a monitored environment. A summing module sums the absolute value of the electronic signal from the first sample module and the electronic signal from the second sample module. A delta comparator module receives the electronic signals from each of the first sample module, the second sample module and the summing module and compares each of the electronic signals with a previously received set of electronic signals to establish a change, wherein an output is generated if the change is greater than or equal to a threshold.

Claims21

Dependent claims

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 said period;
and
generating an output if said total value is greater than a pre-defined threshold.

3 more elements

A dynamically self-adjusting magnetometer comprising:

a first sample module for periodically generating an electronic signal related to at least one magnetic field characteristic of a monitored environment;
a second sample module for periodically generating an electronic signal related to at least one magnetic field characteristic of a monitored environment;
a summing module for summing the absolute value of said electronic signal from said first sample module and said electronic signal from said second sample module over a given period;
and
a delta comparator module configured to receive said electronic signal from each of said first sample module, said second sample module and said summing module, compare at least two of said electronic signals to establish a delta change, and provide an output if the delta change is greater than or equal to a threshold.

2 more elements

Instructions on a non-transitory computer-usable medium wherein the instructions when executed cause a computer system to perform a method for monitoring an environment with a dynamically adjustable sensor, said method comprising:

periodically generating a first channel electronic signal representing a magnetic field of a monitored environment;
periodically generating a first channel average electronic signal representing an average of two or more of said periodically generated first channel electronic signals;
calculating a delta change between two of said electronic signals;
and
generating an output if said delta change is greater than or equal to a pre-defined threshold.

2 more elements

Dependencies are inferred from the claim text.

Dynamically self-adjusting magnetometer

Life of this patent

Dynamically self-adjusting magnetometer

Life of this patent

Abstract

Claims21