Evice for visualizing the change in state of a system

G - Physics – 08 – B

Patent

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G08B 1/08 (2006.01) F41H 11/12 (2006.01) F42C 11/00 (2006.01)

Patent

CA 2195469

he invention consists of a device for visualizing the change in state of a system (1). The device has at least one passive oscillating circuit (2), which is part of the system, and is tuned to a certain frequency; the oscillating circuit is shunted by a by-pass circuit (6), that can be opened by cut-offs (7) that are activated when there is a change in the state of the system. The passive oscillating circuit is designed to be set in a resonance mode by a means of detection (3) outside the system and containing at least one active oscillating circuit that can be tuned to the specific frequency of the passive oscillating circuit. The invention has applications for visualizing the neutralized state of an ammunition like a mine.

L'invention concerne un dispositif de visualisation du changement d'état d'un système (1), dispositif caractérisé en ce qu'il comporte au moins un circuit oscillant passif (2), solidaire du système, et accordé sur une certain fréquence, circuit aux bornes duquel est monté un court-circuit (6), le court-circuit étant susceptible d'être ouvert par des moyens de coupure (7) actionnés au moment du changement d'état du système, circuit oscillant passif destiné à être mis en résonance par un moyen de détection (3) extérieur au système et comprenant au moins un circuit oscillant actif accordable sur la fréquence propre du circuit oscillant passif. Application à la visualisation de l'état neutralisé d'une munition telle une mine

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