A MAGNETIC SENSOR DEVICE FOR AND A METHOD OF SENSING MAGNETIC PARTICLES

摘要

A magnetic sensor device (300) for sensing magnetic particles (15), the magnetic sensor device (300) comprising a magnetic field generator unit (12) adapted for generating a plurality of different magnetic field configurations assigned to a plurality of different magnetic excitation states of the magnetic particles (15), a sensing unit (11) adapted for sensing a plurality of detection signals influenced by the magnetic particles (15) in the different magnetic field configurations, and a combining unit (30) adapted for combining the plurality of signals to thereby derive information indicative of the presence of the magnetic particles (15).