MAGNETIC FIELD SENSOR SYSTEM

摘要

A magnetic field sensor system has a plurality of magnetic field sensor elements, which each are configured to provide an individual sensor value, and of which a first portion is arranged in a first contiguous area and a second portion is arranged in a second contiguous area, and a coil wire arrangement with a first coil portion and at least a second coil portion being connected to the first coil portion, wherein the first coil portion is arranged close to the sensor elements of the first area and the second coil portion is arranged close to the sensor elements of the second area such that, if a predetermined current is applied to the coil wire arrangement, a first magnetic field component is generated at the first area and a second magnetic field component is generated at the second area being opposite to the first magnetic field component. The magnetic field sensor system is configured to produce a total sensor value that is based on a difference between the individual sensor values provided within the areas.

主权项

1. A magnetic field sensor system, comprising
a plurality of magnetic field sensor elements, which each are configured to provide an individual sensor value in response to a magnetic field applied thereto, and of which a first portion is arranged in a first contiguous area, a second portion is arranged in a second contiguous area and a third portion is arranged in a third contiguous area, wherein the first, the second and the third area are distinct from each other; and a coil wire arrangement comprising a first coil portion, a second coil portion and at least a third coil portion being connected in series, such that the second coil portion is connected in series between the first coil portion and the third coil portion, wherein the first coil portion is arranged close to the sensor elements of the first area, the second coil portion is arranged close to the sensor elements of the second area and the third coil portion is arranged close to the sensor elements of the third area such that, if a predetermined current is applied to the coil wire arrangement, a first magnetic field component is generated at the first area, a second magnetic field component is generated at the second area being opposite to the first magnetic field component and a third magnetic field component is generated at the third area having the same orientation as the first magnetic field component; wherein the magnetic field sensor system is configured to produce a total sensor value that is based on a difference between a sum of the individual sensor values provided within the first and the third area and a sum of the individual sensor values provided within the second area.