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Temperature compensated 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 a separate but identical magnetic field sensor 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/ 556,947
November 6, 2006
FEDERAL GOVERNMENT STATEMENT This invention was made with Government support under contract DE-FG03-01ER83228 awarded by the Department of Energy. The Government has certain rights to this invention.