Communications: electrical – Land vehicle alarms or indicators – Of collision or contact with external object
Patent
1996-10-29
1999-08-10
Hofsass, Jeffery A.
Communications: electrical
Land vehicle alarms or indicators
Of collision or contact with external object
340438, 280735, 701 36, 701 47, B60Q 100
Patent
active
059365188
ABSTRACT:
A method for judging vehicle collision in which an output signal from an acceleration sensor carried on a vehicle, which is obtained from a time of start of judgment on collision, is outputted through interval windows each having a predetermined time width of a plurality of sampling cycles and provided as those successively delayed by one sampling cycle respectively. A waveform of the output signal is Hadamard-transformed and decomposed into frequency components for each of the interval windows by using an Hadamard-transforming unit. A threshold value set for a predetermined frequency component and outputted from a threshold-outputting unit is compared with a level value of the predetermined frequency component selected from the frequency components obtained by the decomposition in the Hadamard-transforming unit, by using a collision-judging unit. Occurrence of collision of the vehicle is judged on the basis of a result of the comparison.
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Fukui Tsutomu
Matsuda Kazuo
Hofsass Jeffery A.
Honda Giken Kogyo Kabushiki Kaisha
Mannava Ashok
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