Timeline for Is it possible to use Kinetic energy to power small devices?
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
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| Feb 3, 2014 at 4:55 | history | protected | CommunityBot | ||
| Aug 15, 2012 at 17:47 | vote | accept | CommunityBot | ||
| Aug 15, 2012 at 8:53 | history | tweeted | twitter.com/#!/StackElectronix/status/235660571477938177 | ||
| Aug 14, 2012 at 17:20 | history | edited | user11519 | CC BY-SA 3.0 |
added 597 characters in body
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| Aug 14, 2012 at 16:09 | answer | added | Russell McMahon♦ | timeline score: 9 | |
| Aug 14, 2012 at 16:08 | comment | added | Oli Glaser | These energy harvesting boots may be of interest. They generate a continuous 6 to 9 watts from walking, which is quite impressive. | |
| Aug 14, 2012 at 16:07 | answer | added | ColdestShadow | timeline score: 2 | |
| Aug 14, 2012 at 15:24 | comment | added | Chris Stratton | You could set up a megaohm impedance voltage logger, rig up a generator to charge a cap with with a perhaps 10-100K load resistor and plot the decay of voltage after typical movement events. A little math would extract the energy available by integrating either under the curve, or better the likely rectangular area under the curve representing the usable energy. Comparison to a coin cell may not be favorable unless you have an application that only needs to be powered infrequently. There may be some similarity to antenna powered RFID solutions. | |
| Aug 14, 2012 at 15:24 | comment | added | kenny | One technology to consider is piezo piezo.com/prodeh0nav.html | |
| Aug 14, 2012 at 15:22 | comment | added | stevenvh | Don't expect too much from this. For the watch it works well because that uses only microwatts. The flashlight has to be shaken vigorously for 15 seconds for just a couple of minutes of light. For low-power microcontrollers, in the micro-amperes, you'll be more successful. | |
| Aug 14, 2012 at 15:22 | comment | added | Standard Sandun | are you asking for a reference design? | |
| Aug 14, 2012 at 15:18 | comment | added | user11519 | I had totally forgotten about shake flashlights! Thanks for reminding me. For clarifications I'm thinking more about something that works relatively well while being passive like a watch, you don't need to make a conscious effort to charge these watches, it's done with your normal body movements. | |
| Aug 14, 2012 at 15:14 | comment | added | Chris Stratton | Kind of depends on how vigorous you want to be - see for example shake flashlights. | |
| Aug 14, 2012 at 15:08 | history | asked | user11519 | CC BY-SA 3.0 |