Magnetometer sampling to determine an electric power parameter

A method of analyzing an alternating electrical current includes polling a magnetometer at a constant sampling frequency to generate a plurality of magnetic field strength readings. The polling occurs over a plurality of cycles of the alternating electrical current. A time stamp is then assigned to...

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Bibliographic Details
Main Authors Wisniewski Joseph S, Tilchen Matthew
Format Patent
LanguageEnglish
Published 16.01.2018
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:A method of analyzing an alternating electrical current includes polling a magnetometer at a constant sampling frequency to generate a plurality of magnetic field strength readings. The polling occurs over a plurality of cycles of the alternating electrical current. A time stamp is then assigned to each of the plurality of magnetic field strength readings, and the readings are saved within a common circular buffer according to each reading's respective time stamp and the fundamental frequency of the electrical current. A processor may then determine one or more harmonics of the magnetic field by analyzing the common circular buffer using a Fourier transform.
Bibliography:Application Number: US201414201041