Verfahren und Vorrichtung zur Bestimmung des Zündzeitpunktes einer Insassen-Rückhaltevorrichung unter Verwendung von Insassensensoreingängen

摘要

A method for sensing the occurrence of a vehicle crash is provided for a vehicle having an occupant restraint system operatively connected with a crash sensor (50) having an accelerometer, which produces an accelerometer signal, and with an occupant position sensor (48) which produces a position signal. The crash sensor (50) includes an adjustable filter (52). The method includes the steps of: a) calculating an estimated occupant displacement by integrating the accelerometer signal twice; b) comparing the estimated occupant displacement to the position signal; and c) adjusting the adjustable filter (52) based upon the comparing step to optimise control of the occupant restraint system. In this manner, actual body position of the occupant may be more accurately predicted and measured, which allows optimisation of air bag deployment.