Magnetic field sensor
The magnetic field sensor uses a transducer with superparamagnetic material coils, a capacitor, and an analysis module to measure excitation current and voltage, addressing impedance issues in large and rapidly varying fields for accurate current measurement.
FR3170009A1Pending Publication Date: 2026-06-19SOCOMEC SPA
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- SOCOMEC SPA
- Filing Date
- 2024-12-16
- Publication Date
- 2026-06-19
Smart Images
Figure 00000000_0000_ABST
Abstract
The invention relates to a magnetic field sensor for measuring an electric current, comprising: - a transducer (1), including at least one coil of superparamagnetic material (LN1, LN2), - an excitation voltage generator (VEXC), configured to inject an excitation current into at least one coil of superparamagnetic material (LN1, LN2), - a means for measuring the voltage across the coil of superparamagnetic material (LN1, LN2) vSPM(t), in order to estimate the value of the circulation of the external magnetic field C(t). This sensor is particular in that it further comprises a means for measuring the excitation current iexc(t), in order to estimate the value of the circulation of the external magnetic field C(t). The invention also relates to a method for estimating the value of the circulation of a magnetic field for measuring an electric current, using a magnetic field sensor according to the invention. Figure for the abstract: Fig 2
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