Measuring system

摘要

A measuring system having a magnetic device for generating a magnetic field and having a magnetic field sensor for detecting a flux density of the magnetic field at least in a first spatial direction, whereby the magnetic field sensor is fixedly positioned relative to the magnetic device. The magnetic device has at least two main poles for generating a main magnetic field and at least two secondary poles for generating a secondary magnetic field. The magnetic field in the magnetic field sensor is formed by superposition of the main magnetic field and the secondary magnetic field. The magnetic field sensor is designed to measure the flux density of the superposition in the first spatial direction, and, in the magnetic field sensor, the secondary magnetic field compensates at least partially the main magnetic field in the first spatial direction.

主权项

1. A measuring system comprising:
a fixed magnetic device including a first permanent magnet for generating a magnetic field, the first permanent magnet having a main extension surface along a second spatial direction and at least two magnetic protrusions opposite the main extension surface, the at least two magnetic protrusions extending in a third spatial direction to a protrusion plane, the third spatial direction being perpendicular to the second spatial direction, and the protrusion plane being parallel to the main extension surface; and a magnetic field sensor for detecting a flux density of the magnetic field at least in a first spatial direction, the magnetic field sensor being fixedly positioned further from the main extension surface than the protrusion plane, and offset by a distance from the protrusion plane of the magnetic device, wherein the magnetic device has at least two main poles for generating a main magnetic field and at least two secondary poles for generating a secondary magnetic field, wherein the magnetic field in the magnetic field sensor is formed by superposition of the main magnetic field and the secondary magnetic field, wherein the magnetic field sensor is configured to measure the flux density of the superposition in the first spatial direction, and wherein, in the magnetic field sensor, the secondary magnetic field compensates at least partially the main magnetic field in the first spatial direction.