Velocity change sensor with a cylindrical magnet

Details Velocity change sensor with a cylindrical magnet Velocity change sensor with a cylindrical magnet

G - Physics

01

P

G01P 15/135 (2006.01) H01H 35/14 (2006.01) B60R 21/32 (1990.01)

Patent

CA 2071073

An accelerometer for sensing velocity changes particularly suited for passenger restraint systems in a motor vehicle for the deployment of an air bag includes a housing with contact blades and a magnetically biased contacting element. The contacting element is arranged to move toward the contact blades when a deceleration exceeding a threshold level is sensed. A cylindrical permanent magnet is used to bias the contacting element.

Un accéléromètre pour détecter les changements de vitesse convenant particulièrement à des systèmes de protection des occupants d'un véhicule moteur par déploiement d'un coussin gonflable comprend un boîtier avec des lames de contact et un élément de contact à polarisation magnétique. L'élément de contact est arrangé de manière à se déplacer vers les lames de contact quand est détectée une décélération excédant une valeur de seuil. Un aimant permanent cylindrique est utilisé pour polariser l'élément de contact.

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