SENSOR UNIT FOR MEASURING MAGNETIC FIELDS

SENSOR UNIT FOR MEASURING MAGNETIC FIELDS

The invention relates to a sensor unit (100) for measuring weak magnetic fields without shielding, comprising: two magnetometers (300, 400a, 400b) which are arranged at a fixed distance from one another, wherein each magnetometer has a sensor medium (101, 102, 304) and is configured to detect a magn...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ROELVER, Robert, STUERNER, Felix Michael, BRENNEIS, Andreas, FUCHS, Tino, BUCK, Thomas
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:The invention relates to a sensor unit (100) for measuring weak magnetic fields without shielding, comprising: two magnetometers (300, 400a, 400b) which are arranged at a fixed distance from one another, wherein each magnetometer has a sensor medium (101, 102, 304) and is configured to detect a magnetic field strength at a measurement location by reading a spin resonance that is dependent on the magnetic field strength in the sensor medium, wherein the sensor unit also has at least one excitation light source (120) for radiating light (124) into the sensor media (101, 102) of the magnetometers, wherein the sensor unit also has at least one signal processing unit (406) for determining a magnetic field gradient (100, 200, 300, 400) as the difference between the output signals from the two magnetometers.