Fluxgate magnetometer: Difference between revisions
Created page with "A fluxgate sensor detects magnetic field strength and direction by measuring changes in magnetic permeability of a core material under an external magnetic field." |
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A fluxgate | |||
==Basic principles== | |||
How does a fluxgate work? | |||
A fluxgate magnetometer works by exploiting the nonlinear magnetic response of a ferromagnetic core to detect an external magnetic field. It detects changes in magnetic permeability due to the presence of an external field, typically producing a signal at 2nd harmonic of the excitation frequency. | |||
In a fluxgate sensor, the core material has very high magnetic permeability <math>\mu</math>. This means, the core material can concentrate magnetic fields very well. | |||
It reacts strongly to changes in external fields. Its permeability changes nonlinearly as the material saturates, which is crucial for generating detectable signals (like the 2nd harmonic) when there's an external field. | |||
Illustrations of a fluxgate: | |||
==Introduction to the fluxgate magenotometer== | |||
We plan for a setup.... | |||
==Modelling and measurements of a permanent magnet== | |||
.... | |||
==Modelling and measurements of a coil== | |||
Latest revision as of 11:46, 23 April 2025
Basic principles
How does a fluxgate work?
A fluxgate magnetometer works by exploiting the nonlinear magnetic response of a ferromagnetic core to detect an external magnetic field. It detects changes in magnetic permeability due to the presence of an external field, typically producing a signal at 2nd harmonic of the excitation frequency.
In a fluxgate sensor, the core material has very high magnetic permeability . This means, the core material can concentrate magnetic fields very well. It reacts strongly to changes in external fields. Its permeability changes nonlinearly as the material saturates, which is crucial for generating detectable signals (like the 2nd harmonic) when there's an external field.
Illustrations of a fluxgate:
Introduction to the fluxgate magenotometer
We plan for a setup....
Modelling and measurements of a permanent magnet
....
