Determining magnitude and/or direction of magnetic field involves determining time of extreme value(s) of combined field to be measured and time varying magnetic compensation field

摘要

The method involves subjecting at least one magnetoresistive sensor (1) to a first magnetic field to be measured and to a time varying magnetic compensation field, determining a time of at least one extreme value of a combined overall field from the sensor signal and determining the magnitude and/or direction of the magnetic field to be measured from the magnitude and/or direction of the compensation field at the extreme value point(s). Independent claims are also included for the following: an arrangement for determining the magnitude and/or direction of a magnetic field.