Apparatus and method of warning rear-end collision

G - Physics – 08 – G

Patent

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Details

G08G 1/16 (2006.01) G01S 13/93 (2006.01) G01S 15/93 (2006.01) G06F 17/00 (2006.01)

Patent

CA 2085325

An apparatus of warning a possible rear-end collision of a vehicle having the apparatus against a preceding vehicle, including a computer, a distance sensor measuring a vehicle-to-vehicle distance to the preceding vehicle, a velocity sensor measuring the velocity of the present vehicle. The computer computes a relative velocity of the present and preceding vehicles from a differential of the vehicle-to-vehicle distance and then an anticipated rear-end collision time by a division of the vehicle-to-vehicle distance by the relative velocity. The computer corrects the anticipated rear-end collision time in response to an acceleration on the relative velocity. The computer produces a warning signal on an alarm in response to the corrected anticipated rear-end collision time. A method of warning a possible rear-end collision is also disclosed.

L'invention est un appareil servant à signaler au conducteur d'un véhicule la possibilité de collision avec un véhicule le précédant. L'appareil comporte un ordinateur, un dispositif de mesure de la distance entre le véhicule doté de l'appareil et le véhicule qui le précède, et un capteur de vitesse qui mesure la vitesse du véhicule équipé de l'appareil. L'ordinateur calcule la vitesse relative des deux véhicules à partir de la différentielle de la distance des véhicules, puis il calcule le temps qui devrait s'écouler jusqu'à la collision en divisant la distance entre les véhicules par la vitesse relative. L'ordinateur corrige l'instant de collision anticipé en cas d'augmentation de la vitesse relative. L'ordinateur transmet un signal à un dispositif d'alerte en réponse à une correction de l'intervalle de temps calculé pour une collision. Une méthode d'alerte en cas de possibilité de collision est également révélée.

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