System and method for reducing erroneous crash discrimination

Details System and method for reducing erroneous crash discrimination System and method for reducing erroneous crash discrimination

B - Operations, Transporting

60

R

B60R 21/01 (2006.01)

Patent

CA 2174349

A system and method for controlling actuation of a vehicle passenger safety device in response to an event possibly requiring actuation of the safety device, wherein a modified differentiated measure is generated from received vehicle acceleration information a(t) by substracting (22) the absolute value of a prior-in-time value (20) therefor from its current value, whereby the distortion introduced by negative prior-in-time values is significantly reduced. The resulting modified jerk measure is more useful in discriminating crash events than is a nominal jerk measure, given the latter's predisposition to fail as a useful measure upon encountering negative prior-in-time values. .

Système et procédé commandant le déclenchement du dispositif de sécurité d'un véhicule de transport de passagers en réponse à un événement nécessitant éventuellement l'actionnement dudit dispositif. Le procédé consiste à générer une mesure différenciée modifiée à partir des informations d'accélération du véhicule reçues a (t) par soustraction (22) de la valeur absolue d'une valeur antérieure (20) de sa valeur actuelle, de façon à réduire sensiblement la distorsion introduite par les valeurs antérieures négatives. La mesure modifiée du choc ainsi obtenue est plus utile qu'une mesure nominale pour discerner les événements de collisions, compte tenu de la prédisposition de cette dernière à être inutilisable lorsque les valeurs antérieures sont négatives.

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