A new compact 2D planar fluxgate sensor with amorphous metal core

A new compact 2D planar fluxgate sensor using a ferromagnetic amorphous metal core is described. The fluxgate sensor consists of two orthogonal planar coils and an amorphous magnetic ring core mounted on a PCB substrate. Each planar coil is used alternatively as excitation or as pick-up coil. An electronic interface drives alternatively the two coils and performs a feedback on each sensing coil in order to compensate for the measured magnetic field. The sensing element has a magnetic detectivity of 40nT for an excitation frequency of 10kHz and a 160mApeak driving current.

Presented at:
The European Magnetic Sensors and Actuators Conference, Sheffield, UK

Note: The status of this file is: EPFL only

 Record created 2011-02-10, last modified 2018-01-28

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