Grain angle sensor

G - Physics – 01 – N

Patent

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G01N 21/956 (2006.01)

Patent

CA 2657798

A grain angle sensor system (40) for measuring grain angle direction of surface fibers of a wood object (26) with respect to at least one of a surface plane direction or a transverse direction, such as a dive angle, or with respect to both the surface plane and transverse direction. The system (40) includes multiple laser diodes (44) and photosensor detectors (52) integrated into an electro-optical assembly (54) that can sequence the firing of the lasers (44) to minimize crosstalk. An exemplary assembly (54) includes an enclosure housing an electronic control board connected to circuit cards containing multiple laser diodes (44) and multiple photosensor detectors (52).

L'invention concerne un système de capteur d'angle de grain (40) pour mesurer la direction d'angle de grain de fibres de surface d'un objet en bois (26) par rapport à au moins une direction de plan de surface ou une direction transversale, comme un angle de piqué, ou par rapport à la direction de plan de surface et à la direction transversale. Le système (40) comporte de multiples diodes laser (44) et des détecteurs photocapteurs (52) intégrés dans un ensemble électro-optique (54) qui peut séquencer l'allumage des lasers (44) pour minimiser l'interférence. Un assemblage type (54) comporte une enceinte recevant une carte de contrôle électronique reliée à des cartes de circuit contenant de multiples diodes laser (44) et de multiples détecteurs photocapteurs (52).

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