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Temperature compensated and self-calibrated current sensor using reference magnetic field

United States Patent

October 9, 2007
View the Complete Patent at the US Patent & Trademark Office
A method is described to provide temperature compensation and self-calibration of a current sensor based on a plurality of magnetic field sensors positioned around a current carrying conductor. A reference magnetic field generated within the current sensor housing is detected by the magnetic field sensors and is used to correct variations in the output signal due to temperature variations and aging.
Yakymyshyn; Christopher Paul (Seminole, FL), Brubaker; Michael Allen (Loveland, CO), Yakymyshyn; Pamela Jane (Seminole, FL)
Field Metrics, Inc (Seminole, FL)
11/ 556,932
November 6, 2006
FEDERAL GOVERNMENT STATEMENT This invention was made with Government support under contract DE-FG03-01 ER83228 awarded by the Department of Energy. The Government has certain rights to this invention.