Anordning och förfarande för detektering av defekter i virke

摘要

The present invention relates to an arrangement and a method for the detection of defects in timber. The arrangement comprises at least one linear light source (2) for illuminating a wood surface (1a) capable of moving relative to the light source (2) and a light sensor (3) arranged above the aforementioned wood surface. The field of vision of the sensor (3) covers an area next to an illuminated line of light, and the sensor (3) is so arranged as to detect the presence of scattered light in the wood in that area. The sensor (3) is linked to image processing and signal processing circuits, which are so arranged as to identify defects in the timber on the basis of the light scatter detected in the wood. The invention also relates to a method in which the arrangement in accordance with the foregoing is utilized.