Motion sensor for flat objects

Details Motion sensor for flat objects Motion sensor for flat objects

G - Physics

01

B

G01B 13/24 (2006.01) B65H 7/02 (2006.01) G01P 13/00 (2006.01) G07D 7/00 (2006.01)

Patent

CA 2391171

A simple method and apparatus for contactless rapid and inexpensive motion checking of flat objects, preferably of currency papers. The objects need not be identical in size, thickness, surface appearance, configuration nor deterioration. The checking is carried out by detecting of airflow oscillation under unexpected stoppage of testing object or air movement around the object especially on its front and back edges.

Un procédé et un appareil simples et peu coûteux pour la vérification de mouvement rapide et sans contact pour objets plats, de préférence des papiers pour billets de banque. Les objets n'ont pas besoin d'avoir la même taille, épaisseur, surface, configuration ou détérioration. La vérification se fait par la détection d'une oscillation de flux d'air dès l'arrêt inattendu d'un objet testé ou d'un mouvement d'air autour de l'objet, surtout sur ses bords avant et arrière.

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