Identification of timber deformations

Year: 2002

Authors: Francini F., Longobardi G., Sansoni P., Euzzor S., Ciamberlini C.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: A system to assess timber deformations has been developed using an array of Optical Distance Sensors (ODS), each of which controls a stripe of the timber determining how it deviates from flatness. The main characteristics of the ODS system are compactness, modularity and real-time elaboration software. The shape of the timber is reconstructed sampling the distance between timber and ODS while the timber is running in the wood plant. The working principle of the ODS is based on the triangulation of a light spot. A low power laser diode projects a light spot on the timber surface. The image of the spot, moves on a Position Sensitive Detector (PSD) according to the distance between the optical system and the timber. A suitable software for computer-aided operation was developed at an industrial plant producing wood cutting systems. A demonstrator of the ODS system has been realised and it has been tested under real operating conditions.


Volume: 4 (6)      Pages from: S406  to: S412

KeyWords: Computer aided manufacturing; Computer software; Deformation; Image processing; Position measurement; Sawmills; Semiconductor lasers; Spatial variables measurement; Systems analysis; Timber; Triangulation, Industrial plant producing wood cutting system; Optical distance sensors; Position sensitive detector; Shape defects; Timber deformations; Wood plant, Optical sensors, Cad Cam; Computer Programs; Deformation; Lasers; Lumber; Triangulation
DOI: 10.1088/1464-4258/4/6/388

Citations: 6
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