Sleep-preventing alarming device

Details Sleep-preventing alarming device Sleep-preventing alarming device

G - Physics

08

B

340/124.4

G08B 21/00 (2006.01)

Patent

CA 1214233

ABSTRACT OF THE DISCLOSURE This invention relates to a sleep-preventing alarming device for, in particular, vehicle operators, which gives a warning acoustic signal to awake a drowsy operator when his eyelids shut for over a predetermined time interval, by means of an LED which projects a beam of light on a photo-transistor. The LED and the photo- transistor are so positioned that the beam is intercepted by the eyelash when the operator closes his eyes, thereby cutting the illumination on the photo-transistor. If the interruption of illumination exceeds a predetermined time interval, a driving circuit will be actuated to sound a buzzer. The actuated circuit is disabled when the interception of the light on the photo-transistor resumes below the predetermined value.

414989

Affiliated with

Also associated with

Rating

Sleep-preventing alarming device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sleep-preventing alarming device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sleep-preventing alarming device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1182310