Magnetoresistive sensor for measuring relative displacement of construction parts

Magnetoresistive sensor (1) for measuring relative displacements of construction parts (2, 3). A magnetoresistive element (4) is formed on a surface (7) of a substrate (8). A magnet system (5) generates a magnetic field (13) having a component (14) directed parallel to the substrate surface at the a...

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Bibliographische Detailangaben
Hauptverfasser:	LENSSEN KARS-MICHIEL H, ADELERHOF DERK J
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING ELECTRIC VARIABLES MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEASURING MAGNETIC VARIABLES MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	Magnetoresistive sensor (1) for measuring relative displacements of construction parts (2, 3). A magnetoresistive element (4) is formed on a surface (7) of a substrate (8). A magnet system (5) generates a magnetic field (13) having a component (14) directed parallel to the substrate surface at the area of the magnetoresistive element. Upon the relative displacement of the construction parts, this field component extends at different angles alpha to the magnetoresistive element and is so large that the magnetoresistive element is always magnetically saturated during the displacement. Upon a relative displacement of the construction parts, the magnetoresistive element describes a path (20, 21) with respect to the magnet system. The sensor is suitable for measuring rotations through angles up to 360° and for measuring large translations.