SYSTEM AND METHOD FOR DISCRIMINATING SHORT-PERIOD CRASHES

摘要

In a system (10) and method for controlling actuation of a vehicle passenger safety device in response to events possibly requiring actuation of the safety device, a differential measure (m1(t)) is generated (18) based on stored consecutive values for vehicle acceleration while a measure (m2(t)) correlated with the progress of the events are generated (26 and 30) by providing as input to a first accumulator (24) either a weighted transitory value for received acceleration, or a weighted alternative value that is equal to twice a first predetermined threshold value (x1) minus the transitory value. The differential measure (m1(t)) is thereafter combined (32) with the progress measure (m2(t)) to effectively "damp" or weight the former as a function of an event progress, whereupon the resulting combination is accumulated in a second accumulator (34) to obtain a measure (m3(t)) predictive of event severity, with the safety device being actuated when the predictive measure (m3(t)) exceeds a second predetermined threshold (x2).