Surface metering device

G - Physics – 01 – C

Patent

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Details

G01C 15/00 (2006.01)

Patent

CA 2553952

The invention relates to a method for measuring the area of polygonal flat surfaces in a space consisting in using a device comprising a range finder (2) mounted on a leg support (4) by means of a frame (15) provided with a central point (16), means (5, 6) for a space angular tracking in the direction of the range finder line of vision, means (82) for triggering the acquisition of spherical co-ordinates of a point aimed by the range finder and a digital processing unit. A series of measuring points which is determined for each measurable flat polygonal surface enables to topologically and individually determine said surface and also comprises, for each surface edge, two points whose projections on said surface in a predetermined direction belong to said edge. The processing unit is used for producing the digital pattern of the surface by generating segments and/or straight lines on the basis of the spherical co-ordinates of the obtained measuring points and for calculating the surface area of said digital pattern.

L'invention concerne un procédé de mesure de la superficie de surfaces planes polygonales dans l'espace, dans lequel on utilise un dispositif comprenant un télémètre (2) monté sur un piétement (4) par l'intermédiaire d'une monture (15) à point central (16), des moyens (5, 6) de repérage angulaire dans l'espace de la direction de visée du télémètre, des moyens de déclenchement (82) de l'acquisition des coordonnées sphériques du point visé par le télémètre, une unité de traitement numérique. Pour chaque surface plane polygonale à mesurer, on relève une série de points de mesure qui permet de déterminer topologiquement et individuellement ladite surface et qui comprend au plus, pour chaque arête de la surface, deux points dont les projections sur ladite surface selon une direction prédéterminée appartiennent à ladite arête. L'unité de traitement est adaptée pour créer un modèle numérique de la surface en générant des segments et/ou droites à partir des coordonnées sphériques des points de mesure relevés, et calculer l'aire dudit modèle numérique.

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