Method and apparatus for fatigue detection

Details Method and apparatus for fatigue detection Method and apparatus for fatigue detection

1989-08-18

1990-10-30

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

351210, G08B 2300, A61B 314

Patent

active

049671863

ABSTRACT:
A method and apparatus is disclosed which is capable of detecting an individual's level of fatigue and generating an alarm signal in accordance therewith. The level of fatigue is determined based on changes in the reflectivity of a projected IR beam which is reflected off an eyelid. At initial stages of drowsiness the eyelid is relatively rough and the reflectivity is lower than when the eyelid fully closes as when a person is heavily fatigued.

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patent: 4623230 (1986-11-01), Weinblatt
patent: 4659197 (1987-04-01), Weinblatt
patent: 4725824 (1988-02-01), Yoshioka
patent: 4815839 (1989-03-01), Waldorf

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