APPARATUS AND METHOD FOR DETERMINING A DISTANCE TO AN OBJECTIN A FIELD

An optical proximity sensor (1) generates information indicative of a distance (DI) to an object (14A) in a field and in some embod- iments also generates information indicative of a spectral reflectance characteristics of the object (14A). The information indicative of the spectral reflectance char...

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Bibliographische Detailangaben
Hauptverfasser:	BECK, JAMES L, KINTER, MALCOLM L
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUSPLANTS CATCHING, TRAPPING OR SCARING OF ANIMALS COLORIMETRY CONTROLLING FISHING FORESTRY GYROSCOPIC INSTRUMENTS HUMAN NECESSITIES HUNTING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING MEASURING ANGLES MEASURING AREAS MEASURING DISTANCES, LEVELS OR BEARINGS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS NAVIGATION OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS RADIATION PYROMETRY REGULATING SURVEYING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TESTING TRAPPING
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Beschreibung
Zusammenfassung:	An optical proximity sensor (1) generates information indicative of a distance (DI) to an object (14A) in a field and in some embod- iments also generates information indicative of a spectral reflectance characteristics of the object (14A). The information indicative of the spectral reflectance characteristic can be used to determine whether the object (14A) in the field is a living plant (14A) or another object such as soil (10). Light emitted from the optical sensor (1) for reflection off the object (14A) is modulated so that reflected light from the optical sensor can be discriminated from reflected ambient sunlight. The opti- cal sensor (1) is scanned over the field to map objects in the field and/or to determine the location of rows of crop plants. A sensor in accor- dance with the present invention has many uses in agriculture including spraying, cultivation and vehicle guidance.