Methods and apparatus for security device removal detection

Details Methods and apparatus for security device removal detection Methods and apparatus for security device removal detection

G - Physics

08

B

G08B 29/04 (2006.01)

Patent

CA 2670959

A security device, according to various aspects of the present invention, detects removal of the device from a provided surface. The security device includes a body; at least one magnet coupled to the body; and a sensor coupled to the body proximate to at least one of the at least one magnet. The sensor does not move with respect to the at least one magnet. The at least one magnet magnetically couples the body to the surface. Each one magnet provides a magnetic flux. When the body couples to the surface, at least a portion of the magnetic flux conducts away from the sensor. When the body is not coupled to the surface, at least a portion of the magnetic flux from at least one magnet of the at least one magnet conducts through the sensor thereby indicating removal of the body from the surface.

La présente invention concerne un dispositif de sécurité, qui, selon ses divers aspects, détecte le retrait du dispositif depuis une surface fournie. Le dispositif de sécurité comporte un corps; au moins un aimant couplé au corps; et un capteur couplé au corps à proximité du ou des aimants. Le capteur ne se déplace pas par rapport à l'aimant ou aux aimants. L'aimant ou les aimants couplent magnétiquement le corps à la surface. Chaque aimant fournit un flux magnétique. Lorsque le corps est couplé à la surface, au moins une partie du flux magnétique s'éloigne du capteur. Lorsque le corps n'est pas couplé à la surface, au moins une partie du flux magnétique provenant d'au moins un aimant de l'aimant ou des aimants circule à travers le capteur indiquant de ce fait le retrait du corps de la surface.

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