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krisi
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Re: Harness energy from body and environment - no battery please
krisi   5/7/2014 11:06:27 AM
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True, this is tricky but clearly possible. There are numerous energy harvesting techniques beyond those described in the article and discussion that followed, from Wikipedia:

They all work but the trick is tio extract as much energy out of them. Most energy harvesting sources are just too weak to be useful...Kris


Anand.Yaligar
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Re: Harness energy from body and environment - no battery please
Anand.Yaligar   5/7/2014 7:44:03 AM
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This is a very burning issue, and I think many engineers have been working on how to generate energy that wearable can use without fixing battery in them. The question is then, how do we trap such energy? We can use the environment temperature with respect to that of the body or the energy can be trapped following the physical movement of an individual. What we should know is that, this will not be that simple interns of its effectiveness, for one reason that there will be no constant energy flow and all the circumstances.

krisi
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Re: Harness energy from body and environment - no battery please
krisi   5/4/2014 10:44:47 PM
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Good point @_hm...I forgot about MEMs mechanical harvesters...although you have to move and we usually sit in fron of the computer or drive, not much movement I am afraid...Kris

zeeglen
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Re: Harness energy from body and environment - no battery please
zeeglen   5/4/2014 5:31:36 PM
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@_hm

No reason why movement/kinetic energy cannot replace a battery, or keep a battery or supercap charged.  Your point is valid, I was agreeing with you.  But also pointing out  that such energy harvesting is a proven technology that has been used for a long time and therefore would most certainly be viable in today's applications.

_hm
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Re: Harness energy from body and environment - no battery please
_hm   5/4/2014 2:59:52 PM
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@zeeglen: Why can not it replace battery?

 

zeeglen
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Re: Harness energy from body and environment - no battery please
zeeglen   5/4/2014 1:30:59 PM
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@_hm But the biggest enrgy available from our body is by movement or kinetic energy.

Yup.  And has been harnessed by "self-winding" watches that have been around for more than 200 years.

_hm
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Re: Harness energy from body and environment - no battery please
_hm   5/4/2014 12:55:38 PM
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@Krisi: Yes, it may be way to innovate something. Temperature and infrared may be obvious. But there can be more intricate chemical type enrgy harvester.

But the biggest enrgy available from our body is by movement or kinetic energy.

krisi
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Re: Harness energy from body and environment - no battery please
krisi   5/4/2014 10:55:56 AM
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Very good point @_hm...but how do we tap to the energu we consume via food?...I remember readng about glucose harvesters, but by definition they need to get implanted somewhere in your body and get the energy out from there, not a pleasant solution even if it works...the most simple is to tap to the temperature difference between the body and environment but this only works in cold climate or air conditioned rooms...Kris

_hm
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Harness energy from body and environment - no battery please
_hm   5/4/2014 8:43:30 AM
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Wearables resides very much on our body. In that case they should adapt to get energy from our body and from what we eat. Or from environment.

Why do you need to embed battery in wearables? You need only little enrgy storage device and it must learn to harness enrgy very much like living culture like flora and fauna.

expert2014
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expert2014   5/4/2014 12:17:33 AM
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ifoundthisarticleasveryinterestingandinformativethankyousomuchforsharingthistous.-bentleyforbes
 
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