Eyelid movement detector

Details Eyelid movement detector Eyelid movement detector

1980-04-28

1982-11-16

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

128644, 128733, 340576, G08B 2100, A61B 504

Patent

active

043597246

ABSTRACT:
An eyelid movement detector, includes one electrode to be placed above each eyebrow of an individual and a third electrode to serve as a ground or reference. The electrodes sense eyelid muscle activity and produce a voltage in response to eyelid movement, indicative of a state of awareness. The sensed voltage produced is amplified and compared to a threshold reference voltage by a comparator, which produces a control signal if the sensed voltage is greater than the threshold voltage. The control signal resets a timer. If the timer is not reset within a predetermined time interval, an alarm is activated to warn an individual.

REFERENCES:
patent: 2902030 (1959-09-01), Kennedy et al.
patent: 3889251 (1975-06-01), Litman
patent: 3998213 (1976-12-01), Price
patent: 4144531 (1979-03-01), Anbergen
patent: 4155352 (1979-05-01), Toglia et al.

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