Tamper respondent enclosure

G - Physics – 08 – B

Patent

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Details

G08B 13/12 (2006.01)

Patent

CA 2306101

A tamper respondent enclosure (10) comprises a wall including at least two layers (34, 35; 34, 24). A first layer of the wall (34) comprises a sheet of insulating material (36) having lines of conductive material (38, 39) on first and second sides thereof, the lines forming part of a sensor circuit. A detector (16) is provided part of a sensor circuit. A detector (16) is provided for detecting an interruption in the circuit. A second layer of the wall (35; 24) comprises an area of conductive material (40, 41; 24) separated from the lines (38, 39) by insulating material. The detector (16) will also detect an electrical connection between the lines and the conductive area. The layers of the wall are arranged such that, at any point in the wall, the wall section includes at least one of the lines and the conductive area.

Cette enceinte (10), sensible à toute tentative de violation, comprend une paroi comportant au moins deux couches (34, 35; 34, 24). Une première couche (34) de cette paroi comprend une feuille de matériau isolant (36) présentant sur son premier et son second côté des lignes d'un matériau conducteur (38, 39), lesquelles font partie d'un circuit de détection. Un détecteur (16) sert à détecter toute interruption dans le circuit. Une seconde couche (35; 24) de la paroi comprend une zone de matériau conducteur (40, 41; 24), séparée des lignes (38, 39) par un matériau isolant. Le détecteur (16) détecte également une connexion électrique entre les lignes et la zone conductrice. Les couches de la paroi sont disposées de telle manière qu'à n'importe quel point de la paroi, la section de celle-ci comprend au moins l'une des lignes et la zone conductrice.

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