Optalert drowsiness detection glasses
Optalert’s drowsiness detection glasses work by measuring the velocity of the operator’s eyelid 500 times a second using a tiny invisible LED built into the frame of the glasses.
Core to the success of our wearable technology are two key measurements tracking the amplitude velocity ratio—essentially measuring how fast and how far a person opens their eyelid after they close it.
These are translated into a score measured on the Johns Drowsiness Scale (JDS ™), which the operator sees displayed on their indicator or processor positioned in the cab.
The lightweight frame architecture of the Optalert drowsiness detection glasses provide comfortable all day wear with an interchangeable lens design letting operators choose the right colour to suit any driving condition, including at night .
These scratch resistant polycarbonate lenses come in three colours and offer UV protection complying with the American National Standards Institute’s ANSI Z87.1-2003 “Occupational and Educational Personal Eye and Face Protection Devices”, and Australian/New Zealand Standard AS/NZS 1067:2003 “Sunglasses and Fashion Spectacles”.
Optalert drowsiness detection glasses come in a range of designs to suit varying face shapes and structures. They can also be adapted for prescription lenses.
Signs of a drowsy driver
It is very difficult for drivers to accurately assess their own level of fatigue. The ability to self- assess becomes increasingly impaired as you get more fatigued, however the self-confidence in this ability remains. Nevertheless, there are some warning signs to look out for.
Keep in mind that if you are experiencing any of these symptoms of driver fatigue, it is very likely that your driving performance is already impaired.
- Trouble focusing, or narrowing of attention
- Head nodding, or inability to keep the eyes open
- Not remembering the last few minutes
- Poor judgement, slower reaction time
- “Zoning out”
- Daydreaming and wandering thoughts
- Constant yawning or rubbing your eyes
- Drifting in the lane