Boots – shoes – and leggings
Patent
1990-04-04
1991-11-12
Lall, Parshotam S.
Boots, shoes, and leggings
36442401, 364726, 180282, 280735, 340429, G06F 770, B60R 2132, B60K 2812, B60R 2510
Patent
active
050653229
ABSTRACT:
A method and apparatus is disclosed for controlling actuation of a passenger restraint system in a vehicle. The apparatus includes an accelerometer for providing a time domain vibratory electric signal having frequency components indicative of a vehicle crash condition. An A/D converter converts the accelerometer signal into a digitized signal. A fast Fourier transform device transforms the digitized time domain vibratory electric signal over at least two time intervals into frequency domain signals. The amplitudes of corresponding frequency bins of the frequency domain signals are summed over the entire frequency spectrum, bin-to-bin. A microcomputer monitors the sum of the amplitudes of at least one selected frequency bin of the frequency domain signals and actuates the passenger restraint system when the sum is greater than a predetermined threshold thereby indicating a particular type of vehicle crash is occurring.
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Blackburn Brian K.
Gentry Scott B.
Mazur Joseph F.
Lall Parshotam S.
Pipala E. J.
TRW Vehicle Safety Systems Inc.
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