Method and apparatus for recording the rotation angle of a...

Details Method and apparatus for recording the rotation angle of a... Method and apparatus for recording the rotation angle of a...

2011-04-26

2011-04-26

Camby, Richard M. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle diagnosis or maintenance indication

C701S070000

Reexamination Certificate

active

07933697

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−1stored in the ring buffer, across a predetermined recording time T before and after the accident.

REFERENCES:
patent: 6898492 (2005-05-01), de Leon et al.
patent: 2002-267500 (2002-09-01), None
patent: 2003-72600 (2003-03-01), None
patent: 2006-151006 (2006-06-01), None
patent: 2007-4522 (2007-01-01), None

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