CALIBRATION OF A MAGNETIC SENSOR DEVICE

摘要

The invention relates to the calibration of the magnetic sensor device comprising magnetic excitation wires (11, 13) and a magnetic sensor element, for example a GMR sensor (12), for measuring reaction fields (B₂) generated by magnetic particles (2) in reaction to an excitation field (B₁) generated by the excitation wires. The magnetic sensor element (12) can be calibrated by saturating the magnetic particles (2) with a magnetic calibration field (B₃). Thus the direct (crosstalk) action of the excitation field (B₁) on the magnetic sensor element (12) can be determined without disturbing contributions of the magnetic particles (2).