Method of encoding and decoding a glassy alloy strip to be...

G - Physics – 08 – B

Patent

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G08B 13/24 (2006.01) G01V 15/00 (2006.01)

Patent

CA 2115921

A process for making a large number of magneto-mechanically resonant markers having distinct resonant characteristics is disclosed. The process comprises modifying at least one surface of a glassy metal alloy strip so as to cause the effective length of the alloy strip to be different from the physical length thereof. Resonant markers comprising alloy strips treated by the process of the present invention display unique and distinguishable resonant characteristics which gives the marker a unique identity. The resonant markers can be used for article surveillance, inventory control and personnel identification.

On décrit un procédé de fabrication en grande quantité de marqueurs à résonance magnéto-mécanique présentant des caractéristiques de résonance distinctes. Le procédé consiste à modifier au moins une surface d'une bandelette d'alliage métallique vitreux de façon à ce que la longueur effective de la bandelette soit différente de sa longueur physique. Les marqueurs à résonance comportant des bandelettes d'alliage traitées selon le procédé de l'invention présentent des caractéristiques de résonance uniques et que l'on peut distinguer, ce qui donne au marqueur une identité unique. Les marqueurs à résonance peuvent être utilisés pour la surveillance d'articles, la gestion de stocks et l'identification de personnes.

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