Awakening alarm for motor vehicle operators

Details Awakening alarm for motor vehicle operators Awakening alarm for motor vehicle operators

1997-03-21

1998-04-28

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

340576, G08B 2100

Patent

active

057450382

ABSTRACT:
Eyeglasses hold a light sensor (1) positioned to receive light reflected from an eye. An electronic comparator circuit (4) uses variations of current through the sensor which occur during blinking and eye movement to produce pulses which reset an electronic timing cycle, thereby continually delaying the activation of an alarm signal (8). In the absence of eye motion for a predetermined period of time a warning tone is sounded in the preferred embodiment, followed by a full volume alarm if needed to wake a sleeping driver.

REFERENCES:
patent: 2724109 (1955-11-01), Skolnick et al.
patent: 2726380 (1955-12-01), Campisi
patent: 4144531 (1979-03-01), Anbergen
patent: 5402109 (1995-03-01), Mannik
patent: 5469143 (1995-11-01), Cooper
"Road and Track" Apr. 1995 Hey| Wake up| p. 180.
"Discover" Jul. 1996 Awake at the Wheel p. 60.

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