Flexible potentiometer in a horn control system

Details Flexible potentiometer in a horn control system Flexible potentiometer in a horn control system

H - Electricity

01

C

H01C 3/06 (2006.01) B60Q 5/00 (2006.01) B60R 21/20 (2006.01) H01C 10/10 (2006.01)

Patent

CA 2162484

A flexible potentiometer acts as a horn actuator in an automobile horn control system. In a preferred embodiment, the flexible potentiometer is adhered to a flexible substrate, which is in turn adhered to the inside surface of an air bag hub cover. The shape of the flexible potentiometer is chosen so that the automobile horn will sound when the driver presses against particular potions of the outside of the hub cover. The resistance of the flexible potentiometer changes as its shape changes as the user presses against the hub cover. A horn control circuit responds to extremely rapid changes in the resistance of the flexible potentiometer, but not to more gradual changes caused by, for example, temperature changes. Additional flexible potentiometers may be used to control other functions such as cruise control.

Un potentiomètre flexible (74) fonctionne comme un actionneur d'avertisseur dans un système de commande d'avertisseur d'automobile. Dans un mode préféré de réalisation, le potentiomètre flexible est collé sur un substrat flexible (78) qui est lui-même collé sur la surface intérieure du cache-moyeu à sac gonflable (70). La forme du potentiomètre flexible (74) est conçue de sorte que l'avertisseur de l'automobile retentisse lorsque le conducteur appuie sur des parties particulières de l'extérieur du cache-moyeu (70). Un circuit de commande de l'avertisseur (96) répond aux changements extrêmement rapides de résistance du potentiomètre flexible (74) mais ne réagit pas aux changements plus graduels dus aux variations de température. Des potentiomètres flexibles supplémentaires peuvent être utilisés pour commander d'autres fonctions tellesque le régulateur de vitesse.

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