疲勞駕駛對於司機和他人來說都非常危險，來自諾丁漢倫特大學的研究團隊有新招：他們在司機座位下安裝了能
監測到司機心率的感應儀，如果司機開始打瞌睡，感應儀會發出警報。
英國普萊塞半導體公司正在與該研究團隊合作中，並已成功地完成了該感應儀的測試試驗：安置在座椅下的電容性感應儀測量到座椅上人的心臟信號，並相應發出警報。
研究人員選擇將感應儀晶片植入紡織材料，低調而不顯眼，而非使用一款打眼的感應儀設備。該團隊已製作出了技術原型，但仍需提高資料的持久性和可靠性。雖然也收集到了各種資料，但很多資料都是不相關的。
如果感應到司機的疲勞駕駛，那麼感應儀會發出警報建議司機熄火停車。但如果司機沒有對警報引起重視，那麼巡航控制系統和車道偏離警示系統能幫大忙，能代替司機控制車速，甚至可以發送即時資訊到某控制中心，以採取下一步措施。有些人覺得感應儀發出警報會有些煩人，但是，如果真的能起到保護司機的作用，那也值了。
Falling asleep at the wheel is extremely dangerous both for the driver, and for others sharing the road with them. A team of researchers at Nottingham Trent University are working on a solution to this driving threat. They're doing it with sensors in a car seat that detect the driver's heart rate, and alert the driver if they start dozing off.
Plessey Semiconductors, a UK company that's collaborating with the university on the research, has already successfully used capacitive sensors mounted in a driver's seat to unobtrusively measure the occupant's cardiac signals.
To make the system really flat and unobtrusive, however, the researchers are proposing an actual textile that would feature the sensors, instead of devices that are attached to existing car seats. The team has a working prototype, but it has cited a need to "improve the consistency and reliability of the data so that it can be used for the intended purpose." Essentially, the data is being gathered, but it's not always reliable and usable.
The proposed system would use the data to send an alert to the driver that they're falling asleep, and that they should pull over. If the alert is ignored, that's where the technology could take over and engage systems such as active cruise control and lane departure systems to guide the car safely. It could even send the information to a control center to take further action. Some might find the idea to be a little intrusive, but if it can actually save lives, it's hard to argue.
The Technology Strategy Board has committed £88,318 (US$151,046) in funding to the project, and it will be quite interesting to see how it develops as it moves along. Of course, there's no time frame for when we might see this technology used in an actual automobile, but it's good to see steps taken in this direction.
Source: Nottingham Trent University
Source:http://3smarket-info.blogspot.tw/2014/08/blog-post_33.html
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