Electronic sensor for identifying objects to prevent them...

G - Physics – 08 – B

Patent

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G08B 13/14 (2006.01)

Patent

CA 2322710

The invention concerns an electronic sensor in particular for detecting theft or loss of objects comprising a central electronic unit (1) exchanging coded data by radio frequency with at least a transponder (11), associated with an object to be monitored to verify its presence in a located volume (12) and emitting an alarm (13) when said transponder (11) is no longer present in the monitored volume (12). The invention is characterised in that said transponder (11) is automatically set in stand-by mode outside the transponder active phases (11) and the central unit (1) selectively corresponds with said transponder.

Détecteur électronique destiné notamment à la détection du vol ou de la perte d'objets du type comprenant une unité centrale électronique (1) échangeant des informations codées par radiofréquence avec au moins un transpondeur (11), associé à un objet à surveiller en vue de vérifier sa présence dans un volume défini (12) et émettant une alarme (13) lorsque ledit transpondeur (11) n'est plus présent dans le volume de surveillance (12) caractérisé en ce que ledit transpondeur (11) est mis automatiquement en état de veille en dehors des phases actives dudit transpondeur (11) et en ce que l'unité centrale (1) correspond de manière sélective avec ledit transpondeur.

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