Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1997-03-27
1998-09-29
Elms, Richard T.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
180282, 280735, 701 47, B60R 2132
Patent
active
058148973
ABSTRACT:
The invention is directed to a vehicle passenger restraint system having a restraint device for protecting a passenger in a vehicle. The system includes an acceleration sensor for sensing an acceleration of the vehicle, and an A/D converter for converting an output of the acceleration sensor into a digital signal indicative of the acceleration of the vehicle. A wavelet transform processor transforms the output of the A/D converter by a wavelet function into a wavelet coefficient. The wavelet function is provided on the basis of a mother wavelet function localized in time, scaled in response to a scale parameter, and shifted in response to a shift parameter indicative of a time localization. A speed variation computing unit sets a first condition when the wavelet coefficient transformed by the wavelet transform processor exceeds a predetermined value, and integrates the output of the A/D converter for a predetermined period to provide a speed variation. And, an actuator sets a second condition when the speed variation provided by the speed variation computing unit exceeds a predetermined level. Then, the actuator actuates the restraint device when both of the first and second conditions are set. The wavelet transform processor may be performed in accordance with the Infinite Impulse Response.
REFERENCES:
patent: 5034891 (1991-07-01), Blackburn et al.
patent: 5036467 (1991-07-01), Blackburn et al.
patent: 5065322 (1991-11-01), Mazur et al.
patent: 5185701 (1993-02-01), Blackburn et al.
patent: 5379221 (1995-01-01), Schulter et al.
patent: 5667244 (1997-09-01), Ito et al.
Hattori Katsu
Ito Koji
Shin Seiichi
Aisin Seiki Kabushiki Kaisha
Elms Richard T.
LandOfFree
Vehicle passenger restraint system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vehicle passenger restraint system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vehicle passenger restraint system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-688348