Low profile non-contacting position sensor

A rotary position sensor operable by rotational engagement with a shaft comprises a magnetic assembly (30) having first and second pole pieces (42,44). A back-strap (46) retains the first and second pole pieces (42,44) in parallel and opposing relationship. A shaft (19) passes through at least one o...

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Bibliographische Detailangaben
1. Verfasser:	FROMER, ERIC E
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS 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:	A rotary position sensor operable by rotational engagement with a shaft comprises a magnetic assembly (30) having first and second pole pieces (42,44). A back-strap (46) retains the first and second pole pieces (42,44) in parallel and opposing relationship. A shaft (19) passes through at least one of the pole pieces. The pole piece is held to the shaft by a shaft retainer (22). First and second magnets (34) are disposed on the first and second pole pieces, respectively. A magnetic sensor (37) such as a Hall effect sensor is positioned in an air gap between the pole pieces and operates to provide an output signal representative of the field strength of the magnet as the shaft rotates. The output signal changes magnitude in relation to the relative position of the magnet with respect to the magnetic field sensor.