Magnetic-field-measuring device

摘要

A device ( 16 ) used to measure at least one component of a magnetic field, includes a magnetoresistive sensor ( 102 ) and a measuring chain ( 28 ). The input of the measuring chain is connected to the magnetoresistive sensor ( 102 ), while the output thereof is intended to supply information that is representative of the magnetic field in the region of the sensor. In addition, the measuring chain ( 28 ) includes elements ( 136 ) for isolating a frequency component of the signal from the sensor representative of the magnetic field for a unique pre-determined frequency (FI).