G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/898 (2006.01) B27L 1/00 (2006.01) G01N 33/46 (2006.01)
Patent
CA 2287529
The invention relates to a method and an apparatus for defining the amount of wood material present in a bark flow coming out from debarking and for controlling a debarking process on the basis of said data for reducing wood losses in the debarking process. In the apparatus of the invention, a bark flow emerging from debarking is adapted to be imaged by means of a camera (6), said image taken by the camera being adapted to be processed with an image processing unit (8) which uses different whitenesses of the picture elements or pixels of the image as a basis for defining programmatically the amount of wood material in the bark flow. The image processing unit (8) is adapted to produce an output signal (9) for controlling the debarking process. In addition, the invention relates to a method and an apparatus for defining the amount of wood material in a bark flow being moved to a combustion process and for controlling the combustion process on the basis of said data.
L'invention concerne un procédé et un dispositif qui permettent de définir la quantité de matériau ligneux contenu dans un flux d'écorce provenant d'un écorçage, ainsi que de commander le processus d'écorçage sur la base desdites données, de façon à diminuer les pertes de bois durant ledit processus. Le dispositif de l'invention comprend une caméra (6), qui prend une image d'un flux d'écorce provenant de l'écorçage, et une unité de traitement d'images (8), qui traite ladite image en prenant pour base les différents niveaux de blancheur des éléments d'images ou pixels de l'image pour définir, grâce à un programme, la quantité de matériau ligneux contenu dans le flux d'écorce. L'unité de traitement d'images (8) produit un signal de sortie (9) qui permet de commander le processus d'écorçage. L'invention concerne également un procédé et un dispositif qui permettent de définir la quantité de matériau ligneux contenu dans un flux d'écorce que l'on amène à un processus de combustion, ainsi que de commander ledit processus de combustion sur la base desdites données.
Maybock Rudolf
Taipale Esa
Andritz-Patentverwaltungs-Gmbh
Battison Williams Dupuis
LandOfFree
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