Method and apparatus for determining the alignment of motor...

G - Physics – 01 – B

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G01B 11/275 (2006.01) G01B 11/26 (2006.01)

Patent

CA 2143844

An apparatus for determining the alignment of a motor vehicle's wheels and including targets (22L, 22R, 24L, 24R) which either form part of the wheels or are attached thereto, an optical sensing means such as a television camera (30) for viewing the targets, an electronic processing means (32) connected to the optical sensing means for processing the target images to determine wheel alignment, and a display means (34, 36) for displaying the alignment information. The optical sensing means (30) views a target located on each wheel and forms an image of each target. Electronic signals corresponding to each of the images are transferred to the electronic processing means (32) which correlates the perspective image of each of the targets with the true shape of each target and calculates the alignment of the wheels of the vehicle.

Appareil permettant de déterminer l'alignement des roues d'une automobile et comprenant: des cibles (22L, 22R, 24L, 24R) qui soit font partie intégrante des roues soit sont rapportées sur celles-ci, un moyen de détection optique tel qu'une caméra de télévision (30) permettant de visualiser les cibles, un moyen de traitement électronique (32) relié au moyen de détection optique et destiné à traiter les images de la cible de manière à déterminer l'alignement des roues, et un moyen d'affichage (34, 36) destiné à afficher les informations d'alignement. Le moyen de détection optique (30) visualise une cible située sur chaque roue et constitue une image de chaque cible. Des signaux électroniques correspondant à chacune des images sont transférés vers le moyen de traitement électronique (32) qui établit la corrélation entre l'image en perspective de chacune des cibles et la forme réelle de chaque cible, et calcule l'alignement des roues du véhicule.

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