Title :
A new two-axis magnetic position sensor
Author :
Schott, Christian ; Racz, Robert ; Betschart, Fredy ; Popovic, Radivoje S.
Author_Institution :
Sentron AG, Zug, Switzerland
Abstract :
Describes a new contactless sensor, which measures the position of a magnet along two axes. The sensor is inherently non-sensitive to the magnet movement along the third axis, temperature variations and aging, and does not require calibration. This is achieved by transforming a translation of the magnet into a rotation of a magnetic field, and by measuring the direction of the magnetic field rather than its strength. The direction of the magnetic field is then measured by two two-axis Hall sensors.
Keywords :
Hall effect transducers; ageing; magnetic sensors; position measurement; Hall sensors; aging; contactless sensor; field direction; magnet movement; magnetic field rotation; temperature variations; two-axis magnetic position sensor; Aging; Calibration; Hall effect; Magnetic devices; Magnetic field measurement; Magnetic fields; Magnetic sensors; Pollution measurement; Position measurement; Temperature sensors;
Conference_Titel :
Sensors, 2002. Proceedings of IEEE
Print_ISBN :
0-7803-7454-1
DOI :
10.1109/ICSENS.2002.1037230
