Awakening level estimation apparatus for a vehicle and...

Details Awakening level estimation apparatus for a vehicle and... Awakening level estimation apparatus for a vehicle and...

2006-04-25

2006-04-25

Nguyen, Tai T. (Department: 2632)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S576000, C600S554000, C600S555000, C600S558000

Reexamination Certificate

active

07034697

ABSTRACT:
An awakening level estimation apparatus for vehicle has: a signal processing part; a frequency component amount calculation part for calculating an average value of the frequency component powers and calculating a maximum value of the frequency component powers; a correction factor calculation part for calculating a high frequency percentile value and calculating a low frequency percentile value and calculating a correction factor; an evaluation value calculation part for calculating an evaluation value; and a decision part for deciding an awakening level of a driver.

REFERENCES:
patent: 5786765 (1998-07-01), Kumakura et al.
patent: 5798695 (1998-08-01), Metalis et al.
patent: 5815070 (1998-09-01), Yoshikawa
patent: 6097295 (2000-08-01), Griesinger et al.
patent: 0 999 520 (2000-05-01), None
patent: 1 209 019 (2002-05-01), None
patent: 2002-087107 (2002-03-01), None

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