The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1999
Filed:
Oct. 29, 1996
Tsutomu Fukui, Wako, JP;
Kazuo Matsuda, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
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.