Measuring the profile of a pavement

G - Physics – 01 – C

Patent

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G01C 7/04 (2006.01) E01C 23/01 (2006.01)

Patent

CA 2395280

The invention concerns a method for reconstructing the profile of a road (3) which consists in: moving above the road (2) three contact-free distance measuring sensors (Cav, Cmi, Car), aligned horizontally in the forward moving direction and equidistant from one another, said sensors supplying signals representing their height above the road; measuring the distance covered by the sensors and subtracting twice the height (H2) measured by the meridian sensor (Cmi) from the sum of heights (H1, H3) of the end sensors (Cav, Car). The device comprises a horizontal beam equipped with three sensors, a distance measuring member and a calculator, the whole set being mounted on a support frame or vehicle.

La méthode pour reconstituer le profil d'une chaussée (3) consiste à: déplacer au-dessus de la chaussée (2) trois capteurs (Cav, Cmi, Car) de mesure de distance sans contact, alignés horizontalement dans la direction de déplacement et équidistants, ces capteurs fournissant des signaux représentatifs de leur hauteur au-dessus de la chaussée, mesurer la distance parcourue par les capteurs et soustraire le double de la hauteur (H2) mesurée par le capteur médian (Cmi) de la somme des hauteurs (H1, H3) des capteurs d'extrémité (Cav, Car). Le dispositif comporte une poutre horizontale équipée de trois capteurs, un dispositif de mesure de la distance et un calculateur, l'ensemble étant monté sur un châssis porteur ou un véhicule.

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