Magnetic sensor, magnetic field sensor, contactless position sensor, and contactless position sensor system

摘要

The invention relates to a magnetic sensor, a magnetic field sensor, a contactless position sensor, and a contactless position sensor system. Such a magnetic sensor (100) for detecting a magnetic saturation state of a magnetic permeable core comprised in a sensor coil comprises at least one sensor coil (1) each comprising a magnetic permeable core (5), and a primary and secondary winding (9-1, 9-2) surrounding the magnetic permeable core (5). An electrical circuit (17) is configured to drive a low frequency current (I1) within the primary winding (9-1) of the at least one sensor coil (1) for magnetization of the magnetic permeable core (5) into a magnetic saturation state. The electrical circuit (17) is further configured to detect the magnetic saturation state of the magnetic permeable core (5) based on an inductance of the at least one sensor coil (1) determined by the electrical circuit (17) driving a high frequency current (I2) within the at least one sensor coil (1).