走路也可以幫手機充電？美國威斯康辛大學(University of Wisconsin)發明一種發電裝置，能夠將人類走路時所產生的動能轉換成電力，而這些電力大到足以替電腦和手機充電，研究人員表示，這項裝置能夠安裝在鞋子上，靠著走路以及無線發射器，便可把轉換完成的電力填充至手機內。
這篇研究刊登於美國期刊《自然通訊》(Nature Communications)上，研究人員表示，雖然已有部分可透過人體運動發電的裝置發明，但這些裝置僅能提供在一些電力較少的用具上，例如手錶等等，而這項新的發明裝置可裝置在鞋裡，透過走路，裝置中無數微小導電液滴的動能就會轉變為電流，這些電更大到足以讓手機和電腦充電。
研究人員表示，原本打算在鞋上安插一個USB導線和手機連接進而充電，後來發現這方法不太可行，最後決定利用一個無線發射器，把電力傳送至手機幫手機充電，而現在他們正找尋廠商幫他們製造這雙鞋。
美發明發電鞋 走路替手機充電
Re: 美發明發電鞋 走路替手機充電
Someday, Charge Your Smartphone Simply By Walking
10:00 PM - August 25, 2011 - By Douglas Perry -
Source : University of Wisconsin-Madison
Tom Krupenkin and Ashley Taylor from the University of Wisconsin-Madison believe that we may be able to power our mobile devices such as cell phones simply by walking.
"Humans, generally speaking, are very powerful energy-producing machines," said Krupenkin, a UW-Madison professor of mechanical engineering. "While sprinting, a person can produce as much as a kilowatt of power."
If it was possible to even use a fraction of that energy, there could be enough power to run virtually any gadget in our possession.
"What has been lacking is a mechanical-to-electrical energy conversion technology that would work well for this type of application," Krupenkin said.
In their paper, the researchers describe an approach of "reverse electrowetting" which enables mechanical energy to be converted to electrical energy by using a micro-fluidic device consisting of thousands of "liquid micro-droplets interacting with a novel nano-structured substrate."
Krupenkin believes that this technology, which could be integrated in footwear, for example, could capture the energy created by a walking human and gain about 20 watts of power. Normally, that energy would be converted to heat. "Unlike a traditional battery, the energy harvester never needs to be recharged, as the new energy is constantly generated during the normal walking process," a press release stated.
The scientists envision two different uses for their invention. It could either be used to directly power mobile devices or it could be integrated with a Wi-Fi hotspot This allows users to seamlessly utilize the energy generated by the harvester without having to physically connect their mobile devices to the footwear. Such a configuration "dramatically reduces the power consumption of wireless mobile devices and allows them to operate for much longer time without battery recharge," the researchers said.
"You cut the power requirements of your cellphone dramatically by doing this," Krupenkin noted. "Your cell phone battery will last 10 times longer."
There was no information when this technology could become commercially available.
10:00 PM - August 25, 2011 - By Douglas Perry -
Source : University of Wisconsin-Madison
Tom Krupenkin and Ashley Taylor from the University of Wisconsin-Madison believe that we may be able to power our mobile devices such as cell phones simply by walking.
"Humans, generally speaking, are very powerful energy-producing machines," said Krupenkin, a UW-Madison professor of mechanical engineering. "While sprinting, a person can produce as much as a kilowatt of power."
If it was possible to even use a fraction of that energy, there could be enough power to run virtually any gadget in our possession.
"What has been lacking is a mechanical-to-electrical energy conversion technology that would work well for this type of application," Krupenkin said.
In their paper, the researchers describe an approach of "reverse electrowetting" which enables mechanical energy to be converted to electrical energy by using a micro-fluidic device consisting of thousands of "liquid micro-droplets interacting with a novel nano-structured substrate."
Krupenkin believes that this technology, which could be integrated in footwear, for example, could capture the energy created by a walking human and gain about 20 watts of power. Normally, that energy would be converted to heat. "Unlike a traditional battery, the energy harvester never needs to be recharged, as the new energy is constantly generated during the normal walking process," a press release stated.
The scientists envision two different uses for their invention. It could either be used to directly power mobile devices or it could be integrated with a Wi-Fi hotspot This allows users to seamlessly utilize the energy generated by the harvester without having to physically connect their mobile devices to the footwear. Such a configuration "dramatically reduces the power consumption of wireless mobile devices and allows them to operate for much longer time without battery recharge," the researchers said.
"You cut the power requirements of your cellphone dramatically by doing this," Krupenkin noted. "Your cell phone battery will last 10 times longer."
There was no information when this technology could become commercially available.
Re: 美發明發電鞋 走路替手機充電
昨天我們談到的同性質產品，用太陽能，用手轉發電的收音機，還可為USB接口的小電器充電已有成品，＄60
http://www.prepare-now.com/902.html
而且類似的產品一堆，所以不用怕在荒郊野外手機沒電
http://www.ambientweather.com/emra.html
http://www.prepare-now.com/902.html
而且類似的產品一堆，所以不用怕在荒郊野外手機沒電
http://www.ambientweather.com/emra.html
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