Warning device for alerting a person falling asleep

Details Warning device for alerting a person falling asleep Warning device for alerting a person falling asleep

1999-09-08

2000-07-11

Hofsass, Jeffrey A.

Communications: electrical

Condition responsive indicating system

Specific condition

340576, G08B 2300

Patent

active

060879416

ABSTRACT:
A warning system for warning a user that they have fallen or are about to fall asleep is disclosed. The system includes a contact lens having a detectable feature such as a holographic marking or other markings or indicia, metallic substances, color, or some microcircuit device, which will be worn by the user. The system also includes a detector or sensing device that can detect the presence of the contact lens when the eyelids of the person wearing the contact lens are open. The type of detector will vary depending upon the type of detectable feature incorporated into the contact lens. When the eyelids of the user become heavy or close, so as to cover a substantial portion of the detectable feature of the contact lens for a predetermined period and/or at a predetermined frequency, then the detector will generate a signal to thereby awaken the user.

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