Determination of thickness of a tree trunk

Details Determination of thickness of a tree trunk Determination of thickness of a tree trunk

G - Physics

01

B

G01B 5/10 (2006.01) A01G 23/083 (2006.01)

Patent

CA 2725232

Method and device for the determination of a thickness of a crosssection (S) of a tree trunk (30) received in a harvesting assembly (10) comprising a pair of opposite feed wheels (14) engaging with the tree trunk and a delimbing knife (18) abutting against the tree trunk. The mutual position of the feed wheels is detected as a measure of a transverse dimension (D1) of the cross-section of the tree trunk. The position of the delimbing knife (18) in relation to an abutment surface (22) of the tree trunk opposite thereto is detected as a measure of an additional transverse dimension (D2) of the cross-section (S) of the tree trunk, which additional transverse dimension forms an essentially right angle with the first-mentioned transverse dimension. The thickness of the cross-section (S) of the tree trunk is calculated based on the two measures of the transverse dimensions (D1, D2).

Procédé et dispositif pour la détermination dune épaisseur dune section transversale (S) dun tronc darbre (30) reçu dans un ensemble de coupe (10) comprenant une paire de roues dalimentation opposées (14) en prise avec le tronc darbre et un couteau ébrancheur (18) en butée contre le tronc darbre. La position mutuelle des roues dalimentation est détectée comme une mesure dune dimension transversale (D1) de la section transversale du tronc darbre. La position du couteau ébrancheur (18) par rapport à une surface de butée (22) du tronc darbre opposé à celle-ci est détectée comme une mesure dune dimension transversale supplémentaire (D2) de la section transversale (S) du tronc darbre, laquelle dimension transversale supplémentaire forme un angle essentiellement droit avec la dimension transversale mentionnée en premier. Lépaisseur de la section transversale (S) du tronc darbre est calculée sur la base des deux mesures des dimensions transversales (D1, D2).

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