Method and apparatus for detecting bark and for determining...

Details Method and apparatus for detecting bark and for determining... Method and apparatus for detecting bark and for determining...

G - Physics

01

N

G01N 21/84 (2006.01) G01N 21/898 (2006.01) G01N 33/34 (2006.01) G01N 33/46 (2006.01)

Patent

CA 2068650

2068650 9107653 PCTABS00005 The present invention relates to a method and to an apparatus for detecting the presence of bark and for determining the barking degree of wood or chips. Accordingly, the apparatus includes a light source (12) which directs a concentrated light beam (14) onto the measurement object (16), for instance a log which is moved continuously in a transport chute (20). The shape and/or size of the light image obtained on the log (16) at the point (18) on which the light beam (14) impinges on the log is detected with the aid of a camera (10), preferably a CCD-camera. The shape and/or size of the light image is mutually different for wood and bark. The detection values obtained by the CCD-camera (10) are evaluated in a processing means.

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