Patent ID: 6271747
Filing Date: 2001-08-07
Classification: B60R,G01D,G01P

Abstract:
A method for preventing a premature deployment of a protection device for occupants of a vehicle, said method comprising the following steps:(a) sensing a vehicle motion signal;(b) sensing a precrash signal (S1);(c) sensing a crash signal (S2);(d) generating a first high threshold level (TH, VTH) for preventing said premature deployment as long as said motion signal remains lower than said first high threshold level;(e) combining said precrash signal (S1) and said crash signal (S2) for activating a second low threshold level (TL, VTL) lower than said first high threshold level (TH, VTH) in response to said crash signal (S2) following said precrash signal (S1); and(f) comparing said vehicle motion signal with said second lower threshold level (TL, VTL) for producing a deployment signal (DS) for said protection device when said vehicle motion signal is higher than said second lower threshold level (TL, VTL) when said crash signal (S2) is following said precrash signal (S1).