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Power Hardware Science Technology

Wearable Device Generates Electricity From Walking Knee Movements 99

Zothecula writes "If you've ever worn a knee brace, then you may have noticed what a large change in angle your knee goes through with every step you take, and how quickly it does so. A team of scientists from the U.K.'s Cranfield University, University of Liverpool and University of Salford certainly noticed, and decided that all that movement should be put to use. The result is a wearable piezoelectric device that converts knee movement into electricity, which could in turn be used to power gadgets such as heart rate monitors, pedometers and accelerometers."
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Wearable Device Generates Electricity From Walking Knee Movements

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  • Re:Travel! (Score:2, Insightful)

    by Trepidity ( 597 ) <> on Sunday June 17, 2012 @06:42PM (#40354841)

    At 2 mW currently, with hopes of raising that to 30 mW, you won't be traveling very fast...

  • Failure (Score:5, Insightful)

    by hort_wort ( 1401963 ) on Sunday June 17, 2012 @06:53PM (#40354889)

    I'm willing to go out on a knee here (sorry) and declare this experiment a failure. They have generated 2 milliwatts. Milliwatts -- my spellchecker doesn't even recognize that. For $15, I could get a 1,000 milliwatt solarpanel, tape it to my dang knee, and just sit there. Peizoelectric tech has amazing applications, but this one appears to be a dud.

  • Re:Or.. (Score:5, Insightful)

    by Jeremi ( 14640 ) on Monday June 18, 2012 @01:45AM (#40356775) Homepage

    Already done. Search slashdot for it. It'll be used to power small implants and uses sugar from the blood.

    That's somewhat useful, but what we Americans really need is a device that runs on the energy stored in body fat. People could connect their home gaming rig to their beer belly's AC socket, and emerge at the end of their 8-hour Skyrim session significantly slimmer than when they started.

BLISS is ignorance.