Object sensor system for automatic swing door

E - Fixed Constructions – 05 – F

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E05F 15/20 (2006.01)

Patent

CA 2196377

A object sensor system for a swing door includes swing-side and approach-side sensors. Each of the sensors includes light-emitters and light-receivers which are mounted on a swing door. The light-emitters emit light toward a floor, and the light-receivers receive the light as reflected from the floor. The light emitted and received provides an object sensing zone which has a rectangular shape on the floor having a width equal to or larger than the width of the door. The sensing zone includes a main sensing area closer to the door and an auxiliary sensing area extending along the main sensing area. The auxiliary sensing area is disabled when the door moves.

L'invention est un système de détection d'objets pour porte va-et-vient comportant un capteur pour chaque sens. Chacun des capteurs contient des émetteurs de lumière et des récepteurs de lumière qui sont montés sur la porte. Les émetteurs de lumière projettent leur lumière vers le plancher et les récepteurs de lumière reçoivent la lumière réfléchie par le plancher. La lumière émise et reçue produit sur le plancher une zone de détection d'objets rectangulaire dont la largeur est égale ou supérieure à la largeur de la porte. Cette zone de détection se divise en une zone de détection principale qui se trouve près de la porte et une zone de détection auxiliaire qui entoure la zone de détection principale. La zone de détection auxiliaire devient inopérante quand la porte se déplace.

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