LOW-NOISE FLUXGATE MAGNETOMETER WITH INCREASED OPERATING TEMPERATURE RANGE

LOW-NOISE FLUXGATE MAGNETOMETER WITH INCREASED OPERATING TEMPERATURE RANGE

A magnetic field measurement device includes an excitation circuit including an excitation coil that is coupled to a resonation control circuit. The excitation coil is wound around an amorphous soft magnetic core. The magnetic field measurement device includes a detection circuit including a detecti...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Li, Wenquan, Beste, Randal Thomas, Roberson, Brian
Format: Patent
Sprache:eng
Schlagworte:
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:A magnetic field measurement device includes an excitation circuit including an excitation coil that is coupled to a resonation control circuit. The excitation coil is wound around an amorphous soft magnetic core. The magnetic field measurement device includes a detection circuit including a detection coil that is wound around the amorphous soft magnetic core. The resonation control circuit is coupled to the excitation circuit and to the detection circuit to adjust a resonant frequency of the detection circuit responsive to temperature variations of the amorphous soft magnetic core.