ANGLE DETECTION DEVICE AND SURVEY INSTRUMENT INCLUDING THE SAME

An angle detection device (30) includes photoemitters (35), photodetectors (36), a scale plate (34) disposed therebetween, and a control section (33) to control them. The control section (33) includes an AFE (43) to convert analog signals (Ia) of the photodetectors (36) to digital signals (Id) and a...

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Bibliographische Detailangaben
1. Verfasser:	YANOBE, Satoshi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS GYROSCOPIC INSTRUMENTS MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS SURVEYING TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	An angle detection device (30) includes photoemitters (35), photodetectors (36), a scale plate (34) disposed therebetween, and a control section (33) to control them. The control section (33) includes an AFE (43) to convert analog signals (Ia) of the photodetectors (36) to digital signals (Id) and an arithmetic processor (44) to detect a rotating posture of the scale plate (34) based on the digital signals (Id). The control section (33) simultaneously emits lights from the photoemitters (35) and simultaneously receives the lights by the photodetectors (36). The control section (33) then executes the following data processing for each photodetector (36) one by one in sequence: outputting the analog signals representing an entire area of a light-receiving area of one of the photodetectors and outputting the digital signals converted by the AFE to the processor (44).