G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 17/02 (2006.01) G01B 11/22 (2006.01)
Patent
CA 2195102
For measuring the tread depth of the tyre of a motor vehicle by means of a measuring head containing a laser, the laser measuring head is positioned relative to the tyre of the motor vehicle in such a way, that a reference surface or plane adopts a well-defined position with respect to the tyre. The laser beam of the laser is directed through the reference surface at an angle to the bottom of the tyre tread, whereby a light spot is generated on this bottom of the tyre tread. The position of the light spot is observed by an image resolving sensor. Therefrom, a measure of the depth of the tyre tread is gained.
Afin de mesurer la profondeur de sculpture d'un pneu de véhicule automobile à l'aide d'une tête de mesure à laser (67), cette dernière est positionnée par rapport au pneu de telle manière qu'une surface de référence (68) adopte une position définie par rapport au pneu. Le faisceau (66) du laser (67) est guidé à travers la surface de référence (68) sous un angle alpha jusqu'au fond (64) de la sculpture du pneu pour y produire une tache de lumière (78). La position (e) de cette tache de lumière (78) est observée avec un capteur à résolution d'image (82) et permet d'obtenir une mesure (t) de la profondeur de sculpture du pneu.
Burger Joachim
Riches Mckenzie & Herbert Llp
LandOfFree
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