Patent ID: 8593136

Claim:
A measuring device for detecting a relative movement between at least one magnetic field sensor array integrated into a semiconductor chip and a transmitter for the sensor array, the transmitter and the sensor array being penetratable by the magnetic flux of a magnet and the transmitter has teeth, which is moved past the sensor array during a relative movement thereof or the transmitter has magnetic poles that are moveable past the sensor array during the relative movement, wherein the sensor array has a differential magnetic field sensor, which has a first measuring plate and a second measuring plate, which are offset relative to one another in a direction of the relative movement and the sensor array has a sensor element, designed for measuring an absolute magnetic field, with a third measuring plate that is arranged between the first measuring plate and the second measuring plate in the direction of the relative movement, wherein the differential magnetic field sensor has at least two of the sensor arrays, each of which include at least the differential magnetic field sensor and the sensor element, and wherein measuring directions of the sensor arrays are oriented transverse and at right angles to one another.