Patent ID: 9618318
Date: 2017-04-11
CPC Classifications: G01B,G01D

Claim:
1. A method for contactlessly measuring a relative position of a magnetic field source which produces a magnetic field and a magnetic field sensor in relation to each other, wherein the magnetic field source and the magnetic field sensor are movable relative to each other, wherein the magnetic field sensor detects at least two spatial components (By, Bz) of a magnetic flux density of the magnetic field and a position signal is produced from the measured components, and wherein the method comprises the following steps: calculating the position signal on the basis of a quotient of the two magnetic flux density components, calculating a magnitude of the magnetic flux density and comparing the magnitude with a predetermined threshold value, outputting the current calculated position signal if the magnitude of the magnetic flux density is higher than the threshold value, outputting a preceding stored position signal if the magnitude of the magnetic flux density is smaller than or equal to the threshold value, and storing the output position signal.