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

摘要

A magnetic sensor device (1000) for sensing magnetic particles (15), the magnetic sensor device (1000) comprising a first magnetic field generator unit (12) excitable for generating a first magnetic field, a sensing unit (11) adapted for sensing a signal indicative of the presence of the magnetic particles (15) in the first magnetic field, a second magnetic field generator unit (1001) adapted for generating a second magnetic field affecting the sensing unit (11), and a processing circuitry (1002) adapted for processing the signal to form a digitized signal and adapted for feeding back the processed signal to the second magnetic field generator unit (1001).