Alertness monitor

Details Alertness monitor Alertness monitor

2006-07-04

2006-07-04

Trieu, Van T. (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S575000

Reexamination Certificate

active

07071831

ABSTRACT:
An alertness monitoring system includes: means to measure velocity and amplitude of eyelid and eye movement; and storage means to continuously record the measurements. A data processor calculates the blink amplitude to velocity ratio and/or the saccade amplitude to velocity ratio and compares the measurements against a predetermined scale. The scale is derived from averaged measurements of the eye and eyelid movement parameters for a sample population measured against predetermined incremental blood alcohol levels. The output of the system can include a display for showing the alertness measurement based on the scale, or an alarm means triggered by the scale reading reaching a predetermined limit based an the blood alcohol level scale.

REFERENCES:
patent: 4838681 (1989-06-01), Pavlidis
patent: 5583795 (1996-12-01), Smyth
patent: 5867587 (1999-02-01), Aboutalib et al.
patent: 6575902 (2003-06-01), Burton
patent: 6743022 (2004-06-01), Sarel
patent: 6947790 (2005-09-01), Gevins et al.

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