This is the first paper in a new series. The main goal is to determine a coherent theory of sensing frontal crashes and the resulting required properties of future airbag sensor systems. In this paper a general theory of crash sensing is developed by combining conclusions from previous papers with new analysis. The key features of future systems should be as follows: (1) crush zone sensors which sense relevant impacts to alt portions of the vehicle front; (2) an occupant position sensor as an input to the sensing system; and (3) a mechanical safing/arming sensor having a long dwell. It is further concluded that cars should be designed so that only impacts involving the front of the vehicle need be sensed for the deployment of frontal protection airbags. A sensor system is presented which has the required features.
Samenvatting