Title:
車両回転角度記録方法および車両回転角度記録装置
Document Type and Number:
Japanese Patent JP4594430
Kind Code:
B2
Abstract:
An apparatus for recording the rotation angle of a vehicle comprises an angular velocity sensor adapted to measure an angular velocity ω of the vehicle, an integrator adapted to integrate the measured angular velocity ω across a predetermined unit of time Δt to calculate a differential rotation angle Δα in unit of time Δt, a ring buffer adapted to store the differential rotation angles Δαan acceleration sensor adapted to detect that an accident occurred with the vehicle, and a nonvolatile recording device adapted to record, when an accident is detected by the acceleration sensor, the differential rotation angles ΔαM . . . ΔαM+N−1 stored in the ring buffer, across a predetermined recording time T before and after the accident.
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Inventors:
Fukushima Shinya
Makoto Oda
Makoto Oda
Application Number:
JP2009167305A
Publication Date:
December 08, 2010
Filing Date:
July 15, 2009
Export Citation:
Assignee:
Autoliv Development AB
International Classes:
G07C5/00; G01D9/00; G08G1/00; B62D41/00
Domestic Patent References:
| JP9054889A | ||||
| JP2002267500A | ||||
| JP2003072600A | ||||
| JP2006151006A | ||||
| JP2007045221A |
Attorney, Agent or Firm:
Autoliv Co., Ltd.
Patent business corporation aqua patent office
Patent business corporation aqua patent office