Invention Grant
- Patent Title: Impedance compensation method for giant magneto-impedance magnetic sensors to null out the terrestrial residual magnetic field
- Patent Title (中): 用于巨大的磁阻抗磁传感器的阻抗补偿方法来消除地面残余磁场
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Application No.: US13373250Application Date: 2011-10-31
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Publication No.: US08686715B1Publication Date: 2014-04-01
- Inventor: James D. Hagerty
- Applicant: James D. Hagerty
- Applicant Address: US DC Washington
- Assignee: The United States of America as represented by the Secretary of the Navy
- Current Assignee: The United States of America as represented by the Secretary of the Navy
- Current Assignee Address: US DC Washington
- Agent James M. Kasischke; Jean-Paul A. Nasser; Michael P. Stanley
- Main IPC: G01R33/02
- IPC: G01R33/02
Abstract:
The invention is a method, described with the appropriate auxiliary electronic circuitry, for compensating the effect of the earth's magnetic field on Giant Magneto-Impedance magnetic sensors. The method as taught is an alternate way of cancelling out the effect of the very large residual earth's magnetic field using an impedance-tuning circuit (i.e. electrical compensation) rather than the usual magnetic type of compensation.
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