Device for compensation of external magnetic stray fields or to compensate the influence of a magnetic field gradient to a magnetic field sensor

摘要

Device for compensation of an external magnetic stray field, comprising– at least two magnetic field sensors (17, 18),– the a to a ferromagnetic component (1) acting external can detect the magnetic field, and– each of which have a mutually differing sensitivity,– wherein the magnetic field sensor (17, 18), which compared with the other magnetic field sensor (17, 18) a higher strength of the external magnetic field is detected, a sensitivity, the of the sensitivity of the other magnetic field sensor (17, 18) deviates.