- Researchers at Virginia Tech have devised a sensor that attaches to a construction hard hat and keeps tabs on carbon monoxide levels in a worker's blood to give a heads-up before they can reach dangerous levels.
- The engineers said the workers they think can benefit most are one who use power tools in enclosed spaces or ones with poor air exchange, where levels can build up from the tools' exhaust.
- The system works much like the non-invasive pulse oximeters that use a light to measure oxygen levels in the b bloodstream, but the light frequency has been tweaked for carbon monoxide instead.
From the article:
The results of their study showed that a user of this helmet would be warned of impending carbon monoxide poisoning with a probability of greater than 99 percent. ...