Optoelectronic sensors and compensation system therefor

A steering wheel shaft (103) position sensor includes a light emitter (110) fixed with respect to the shaft (103) and a pair of light detectors (111, 112) fixed with respect to the emitter (110). A disc (113) is mounted for rotation on the shaft (103) between the emitter (110) and the detectors (111...

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Bibliographische Detailangaben
Hauptverfasser:	DELPOUX, ARNAUD, OSAJDA, MARC
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 steering wheel shaft (103) position sensor includes a light emitter (110) fixed with respect to the shaft (103) and a pair of light detectors (111, 112) fixed with respect to the emitter (110). A disc (113) is mounted for rotation on the shaft (103) between the emitter (110) and the detectors (111, 112) and has a grey scale track extending circumferentially on the disc (113) between the emitter and one of the detectors (111), the grey scale varying from opaque to transparent to the light emitted by the emitter (110). A second, transparent track extends circumferentially on the disc (113) between the emitter and the other detector (112). The outputs of the two detectors (111, 112) are compared to provide an indication of the movement of the shaft (103).