Measuring, counting & classifying fish

In order to count, measure sizes and classify fish, the fish are passed along an inclined track 1 in which two light detectors and corresponding transmitters (12, 13) are disposed. A fish will interrupt the beam of the light sensors (12, 13). From the relative instants at which the sensors (12, 13)...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HERMANN KRISTJANSSON, OLAFUR SKULASON
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY CARE OF BIRDS, FISHES, INSECTS FISHING FORESTRY HUMAN NECESSITIES HUNTING MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS NEW BREEDS OF ANIMALS PERFORMING OPERATIONS PHYSICS POSTAL SORTING REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR SEPARATING SOLIDS FROM SOLIDS SORTING SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTEDPIECE-MEAL, e.g. BY PICKING TESTING TRANSPORTING TRAPPING
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Beschreibung
Zusammenfassung:	In order to count, measure sizes and classify fish, the fish are passed along an inclined track 1 in which two light detectors and corresponding transmitters (12, 13) are disposed. A fish will interrupt the beam of the light sensors (12, 13). From the relative instants at which the sensors (12, 13) sense the presence of the fish, and the time during which one sensor continues to sense the fish can be used to derive the velocity of the fish and its length. from which its overall size may be calculated. The track has a V-section and the fish may be directed into different tanks according to size.