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New Twist on Power Walking

An anonymous reader writes "Carrying a newly designed backpack loaded with between 44 and 84 pounds of gear, users generate enough electricity to simultaneously power an MP3 player, a PDA, night vision goggles, a handheld GPS, a CMOS image decoder, a GSM terminal in talk mode, and Bluetooth."

49 of 253 comments (clear)

  1. Ob Snow Crash reference by richie2000 · · Score: 4, Funny

    - You're a gargoyle.

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    1. Re:Ob Snow Crash reference by jellomizer · · Score: 4, Informative

      I think you missed the point. After RTFA the gear between 40lbs-80lbs is your normal gear that you will take in a backpack. Clothing, Tent, Sleeping Bag, Towel, Toiletries, Oder Free Soap, Pocket Knife, First Aid Kit, Cooking pans, Fire starter kit, Water, food. All this combined could make the pack easily 50-80 lbs. the article never gave the weight to the pack when it was empty but they did state it did help you carry yourself better thus making the load more efficient.

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    2. Re:Ob Snow Crash reference by Hogwash+McFly · · Score: 4, Funny

      Any dirty bastards who read it as 'Power Wanking', please direct yourselves here.

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  2. 84 pounds to power devices? by cwtrex · · Score: 2, Funny

    might be worth it for over weight kids that want to power their game boy while walking for a change ...

    I suppose it'll help build muscle too lol

    1. Re:84 pounds to power devices? by OllieG · · Score: 3, Funny

      According to TFA, the backpack changes a walker's gait so that they actually walk more efficiently, so maybe not! Shame for all the fat kids, though.

    2. Re:84 pounds to power devices? by timeOday · · Score: 5, Interesting
      Unfortunately, dismounted infantry have to carry around heavy backpacks most of the time, see for instance:
      A typical operation lasts for five or six days in the field, requiring each man to bring 22 litres of water, ammunition and packs that can weigh up to 90 kilograms, along with an M-4 carbine and a 9mm sidearm. Other missions can go on for 10 days.
      More and more, batteries only add to the problem... recycling some of the walking energy to reduce the need for batteries is a fantastic idea, getting it to actually work is even better.

      Maybe next they can reduce the need to carry water by recycling urine!

    3. Re:84 pounds to power devices? by FirienFirien · · Score: 2, Informative

      If you're just looking for enough power for a game boy, you might well be able to do it with a standard bag. 84lbs is the top end of the power range.

      http://www.newscientist.com/article.ns?id=dn7970 has another viewpoint, and even a clear picture.

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    4. Re:84 pounds to power devices? by Divide+By+Zero · · Score: 5, Interesting

      Well, my mod points expired, so I'll have to just agree with you.

      US Army's been developing computers for infantry for the last few years (I forget the code name, but it was typical Pentagon two parts macho two parts silly one part corny) and the stuff I read/saw said that the limiting factor was battery life. Rechargables are HEAVY. Tack that onto a 90kg pack that he's carrying anyway, and range gets shorter as your soldiers carry more If a grunt can power his laptop, field radio, GPS, and other electronics on the battlefield by walking and carrying the stuff he has to take anyway, and have that power generation help HIM to walk more efficiently, he can effectively power his gadgets for free AND get extended range by using less energy to walk/run. I can't see any way Defense ISN'T gonna be all over this like white on rice.

      I've been somewhat involved in Geocaching, and one of the biggest complaints of cachers is running out of batteries for their GPS. One of the most popular trade items is spare AA batteries. If they can make this affordable to the consumer, and you can carry your water, trades, poncho, and whatever else you need for a day in the woods and power your Garmin or Magellan on the strength of that, that's huge.

      Then there's the college kids with their newfangled eye-pods, high schoolers with cells, grade schoolers with game boys. They all carry a bunch of books everywhere they go. My high school backpack was 30-40lbs. That's a cell or PDA no prob. Retrofit a briefcase for Joe Yuppie to carry his paperwork and recharge his blackberry or laptop at the same time. Less time tied to an outlet, more time being on the road and productive (or so he'd have you believe). Get a small rig, put your mp3 player in it, strap it to your waist and go jogging. Kiss your low-battery warning goodbye. Make a tiny version and build it into a digital wristwatch, never change your battery again.

      How are these people NOT going to be writing their own check?

      --
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    5. Re:84 pounds to power devices? by timeOday · · Score: 2, Interesting
      You don't recycle walking energy, you _drain_ extra walking energy, so it will be heavier to wealg, given the same total load. Have you ever ridden a bicycle with a dynamo-driven headlight? That's more or less the idea.
      Or it might be more like regenerative braking - not energy for free, but putting energy to use that would otherwise be wasted.

      The guy carrying the pack is already raising it by a small amount with every step (because it bobs as he walks). Thus he is doing work. If the weight is suspended, it won't bounce as much with each step, and some of the energy previously used to lift the pack will go into the batteries. At least hopefully that's how it works out.

  3. That would make you by silasthehobbit · · Score: 5, Funny

    A walking target for muggers. Or if you went on the London Underground with it, increase your likelihood of being shot by the Met Police exponentially

    1. Re:That would make you by FidelCatsro · · Score: 4, Funny

      With a few modifications you could be a walking talking beat-em up character ."Lighting bolt thrust" ..."Spinning Electro kick".. no mugger could touch ***"Nine Volt Man***
      That joke was shocking

      --
      The only things certain in war are Propaganda and Death. You can never be sure which is which though
    2. Re:That would make you by isorox · · Score: 4, Informative

      Except they were wearing plain clothes, did not shout "police, stop!", he didn't run until after he'd picked up a newspaper, walked through the ticket bararier, and saw a train about to leave, same as any other london commuter

    3. Re:That would make you by MichaelSmith · · Score: 3, Insightful
      Except they were wearing plain clothes, did not shout "police, stop!", he didn't run until after he'd picked up a newspaper, walked through the ticket bararier, and saw a train about to leave, same as any other london commuter

      And the cop who had him pinned was as surprised as anybody else when the shots started.

      And the shooter fired (apparently) an entire load. That's panic, not the work of a professional.

    4. Re:That would make you by PeeAitchPee · · Score: 2, Informative

      Except they were wearing plain clothes, did not shout "police, stop!", he didn't run until after he'd picked up a newspaper, walked through the ticket bararier, and saw a train about to leave, same as any other london commuter

      That's not what eyewitnesses said the day of the shooting immediately after it happened. But you're absolutely right -- I have no doubt that what the British press has reported on the matter is completely unbiased, especially after the Daily Mirror last year made up the story about British soldiers pissing on Iraqi prisoners and either fabricated (probably) or used obviously fake photographic evidence.

    5. Re:That would make you by nfk · · Score: 2, Informative

      You're a bit behind on the news.

      http://www.foxnews.com/story/0,2933,165960,00.html

      I don't know if the final report came out yet, so I'm not sure this is the official version. Google around and you will find more.

    6. Re:That would make you by Guppy06 · · Score: 2, Insightful

      "but the power of suggestion can be incredible,"

      Double-edged sword. You can use it to claim it was the cause for changing their story afterward ("Blair is a bad, bad man!"), but I can use it to claim the story was flawed at the beginning ("Brown skinned people are trying to blow you up!")

      I heard the same eye-witnesses, many of whom said he looked "Pakistani." He was Brazillian. Once they think they see someone who might try to blow them up, they can see a lot of things.

  4. Walking Chick Magnet! by blankoboy · · Score: 5, Funny

    Not only generating power but instantly increasing your popularity with the fairer sex.

    1. Re:Walking Chick Magnet! by SimilarityEngine · · Score: 2, Funny

      According to the article:

      Suspended-load Backpack testers were able to generate up to 7.4 Watts...

      Everyone knows that walking chick magnets require several kilowatts to operate, so you'll have to jog rather quickly :-)

      --
      Those who can make you believe absurdities can make you commit atrocities. - Voltaire
  5. "... and Bluetooth"? by pieterh · · Score: 4, Funny

    The incredible accuracy of this list of items that the backpack can power quite astounds me.

    "Sorry sir, if you want to play WMAs you'll need the extended BackpackWindows version."

    "Sorry sir, USB2.0 is not supported. Have you considered using BlueTooth?"

    "Sorry sir, federal law requires you to wear night vision goggles while carrying this backpack. Yes, sir, I'm aware it's high noon. Regulations."

    "Sorry sir, but is that GSM terminal in talk mode? It is? OK, just checking... some tourists think they can use stand-by mode."

    1. Re:"... and Bluetooth"? by Anonymous Coward · · Score: 2, Funny

      That's the new user-friendly standard notation for electric power. All that stuff about Watts and Joules was bound to confuse people!

  6. Kangaroo by awol · · Score: 5, Interesting

    Sounds a lot like the energy differential shown by hopping kangaroos. Their energy consumption is remarkably low given the velocities they generate and it seems to be the result of energy stored in their lower leg tendons. In other words they are using the same benefits to get a large increase in overall energy output with a marginal increase in metabolic consumption.

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  7. Musical Ninja by SimilarityEngine · · Score: 5, Funny

    ...enough electricity to simultaneously power an MP3 player ... night vision goggles ...

    Great! Now I can assasinate people while listening to the Kill Bill soundtrack!

    --
    Those who can make you believe absurdities can make you commit atrocities. - Voltaire
    1. Re:Musical Ninja by Rirath.com · · Score: 2, Funny

      Great! Now I can assasinate people while listening to the Kill Bill soundtrack!

      I've always wanted my own theme music...

  8. Sadly... by MaestroSartori · · Score: 4, Funny

    ...carrying all that gear means that the calls you do make on the GSM device in talk mode sound like heavy breathing pervert-o-calls, and you'll get busted for harrassment :)

  9. Uses by FirienFirien · · Score: 4, Insightful

    While at the moment this is spawning a handful of standard amusing slashdot responses, you miss a more useful application - that of field operatives. And you can take 'field operatives' to mean soldiers and the like - being able to use all kinds of equipment that would normally require more power than is available should improve things, although bear in mind they already carry heavy packs so it wouldn't be one per person. The other kind is the more normal field operative - anyone who goes exploring/researching/hiking/prospecting... if you don't have to carry samples back to base camp for analysis, or can power *anything* enabling, then you're ddoing well with one of these. Remember that most people don't need the long list of things mentioned in the post; but for enabling people who are away from home, this looks like it could be really handy.

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    1. Re:Uses by Ced_Ex · · Score: 2, Funny

      With all due respect, RTFA. As has been pointed out elsewhere in these comments, the 44-88 pounds is just some arbitrary load whose motion generates the electricity. It can be food, water, contraceptives, whatever you like.

      Whoa.. 88lbs. of contraceptives? Whew, I'll get tired just from carrying them before I actually get a chance to use them.

      --
      Live forever, or die trying.
  10. That's LOTS of batteries by dvandok · · Score: 4, Funny
    By carrying a load weighing from 44 to 84 pounds (20 to 38 kg) [...] The electricity [...] can be stored in a lightweight rechargeable battery for later use, greatly reducing the need to haul and use heavy replacement batteries.

    I think that bringing 30 kg in replacement batteries should last me the entire vacation!

  11. why bother by k31dar · · Score: 2, Insightful

    Carrying between 44 and 84 pounds of backpack will negate the need to carry heavy batteries. So how heavy are batteries for MP3 players and PDA's these days?

    1. Re:why bother by hey! · · Score: 2, Insightful

      Well, that all rather depends on how long you intend to listen, doesn't it?

      IIRC Li ion batteries store 150 Wh/kg. 44 lb (the lower weight I guess of this unit) is about 20kg; if you were to use Li-ion batteries then this weight would buy you 3000 Wh of energy. Your break even depends on your load:

      7w: 430 hours
      1w: 3000 hours
      100mw: 30,000 hours = 1250 days = 3.5 years.

      Of course, if you are using individual cells, your weight efficiency isn't ideal, but you can discard them as you go along, reducing your load. But it's safe to say that if your planning on getting one of these as a post-apocalpytic magnet for music starved women, by the time you catch up to the guy with a backpack full of batteries the nubile ones will never have heard of an iPod. And you'll probably never catch up to the guy with a couple of strips of copper and zinc and ready access to a citrus grove.

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  12. Coincidence... by Nevtje(hr · · Score: 2, Funny

    ...that this was posted on the same day as the article about the robotic hand?

    1 + 1 = 2 (say hello to a new era of beach voyeurism)

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  13. Re:Gee by moonbender · · Score: 2, Informative

    Actually, it's not like the power generator weighed 50 pounds, the backpack just needs some weight to work - more weight means more power generated. If your backpack already weighs a lot, you're good to go. In other words, RTFA. ;)

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  14. Picture and Details by enoraM · · Score: 5, Informative

    Here's a picture http://www.heise.de/bilder/63699/0/1 . The aparatus just takes a small part of the weight. However, you have to put something in your backpack, whatever it is, to generate power.

  15. Re:84lbs of what? by Eivind · · Score: 3, Interesting
    It can be any load, it's just used for inertia. The device simply suspends the load on springs so it can slide an inch or so up and down the frame. Then energy is extracted from this movement. Very modest amounts of energy, I should add, around 7 watts.

    For most applications this is a nonstarter: if it's daytime, solar would work better (since it'd work at rests too) and for many operations at nigth, simply carrying a battery is easier, because you want say your nigth-vision goggles to keep working even if you leave the backpack behind for some job.

  16. why is this new? why a backpack? by speculatrix · · Score: 5, Interesting
    why new?
    self-winding watches have been around for many years to store energy in springs to power a watch, and Seiko and other companies have watches which store electricy in ultra-capacitors.

    why a backpack?
    why not use wrist- or ankle-mounted generators, which get a lot more movement, so presumably the generator could be a lot smaller and lighter?

    1. Re:why is this new? why a backpack? by onpaws · · Score: 3, Informative

      A backpack makes better sense because it is jostling a large amount of weight predictably in the vertical direction. F = m * a. On the other hand/knee, your wrist or ankle-mounted generator is only moving that body part, a much smaller mass.

    2. Re:why is this new? why a backpack? by promatrax161 · · Score: 2, Interesting

      Well, on the other hand, if you would be running with a knee-mounted generator, perhaps it could make difference. Of course, you would not be running with a heavy backpack, but you might want to charge your batteries while jogging (which you might be doing anyway)?

    3. Re:why is this new? why a backpack? by Federico2 · · Score: 2, Funny

      why not use wrist- or ankle-mounted generators...?


      Now, shake that ass!
    4. Re:why is this new? why a backpack? by promatrax161 · · Score: 2, Interesting

      Exactly! Moreover, by spreading generators through the armor you can make the power supply more redundant, which is always good in combat.

      Would this work for spacesuits during Mars exploration mission? I mean, OK, the joints are stiffer, but one would move also by jumping over large distances, due to less-then-normal gravity...

    5. Re:why is this new? why a backpack? by Anonymous Coward · · Score: 2, Funny
      why not use wrist- or ankle-mounted generators, which get a lot more movement, so presumably the generator could be a lot smaller and lighter?

      Let me put it this way. Which is going to hurt more: A wristwatch dropped onto your foot from a height of three feet, or a 27-inch TV dropped onto your foot from a height of two inches?

      The amount of pain is a crude indicator of how much energy can be obtained.

  17. not for use in the park by sl4shd0rk · · Score: 3, Funny

    be careful while jogging past another person wearing one with more negative electrons than yours. *ffffZZZZZZZOTTTT* *POOOOM* *smoke smoke*

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    1. Re:not for use in the park by SimilarityEngine · · Score: 2, Funny

      be careful while jogging past another person wearing one with more negative electrons than yours

      I'd be even more worried about people with positive ones. BOOOOOOOOOOOOM!

      --
      Those who can make you believe absurdities can make you commit atrocities. - Voltaire
  18. I'm wondering by Ixne · · Score: 4, Funny

    What are the chances your average /. user can even heft said backpack? (images of futuristic schoolyard-bully style backpack swiping ensue)

  19. If you are walking by loadquo · · Score: 2, Informative

    It is recommended that you don't carry more 40 to 55 pounds. In a combat situation anyway. And I don't see why this doesn't apply to backpackers. External frame backpacks can also be quite heavy, so it would be interesting to see how much the backpack+motor would cut into your weight allowance.

    1. Re:If you are walking by tazanator · · Score: 2, Informative

      As a former infantry man, I carried 35 lbs of; water (common load in the US is 1/2 gallon, in Iraq they carry 2 gallons), ammo(230 rounds 5.56 for M-16/ 600-1000 rounds for machineguns), compass, clothing (12 lbs), knives (bayonet pocket and leatherman) and other gear (the M-16 is 12.5 lbs) my combat stripped ruck (wet weather gear, cold weather gear, 3 days food / 1 change clothes and 3 pairs socks & underware) is 35 lbs, many troops are carring even higher weights (the radio operator carries a 35lb radio in his ruck the machine gunners carry extra ammo...) The weight the troops carrry is already very high and once bullets start fling the first thing dropped is the backpack.

      --
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  20. Meh by Cthefuture · · Score: 2, Interesting

    You may generate 7 watts but if you are storing that in a battery you won't get that much back out.

    It's a good idea though since a suspended load is going to be absorbing energy anyway (ie. the springy-ness), might as well use that to generate power.

    However, a lot more energy could be generated by absorbing the person's weight (plus anything they carry). For example, if you could store the energy absorbed by the padding of your shoes as you walked. Now that would be some power.

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  21. Power *Walking*? by dwater · · Score: 2, Funny

    Sounds more like "Power *Stalking*" to me...

    --
    Max.
  22. Resistance is futile... by ddkilzer · · Score: 2, Funny

    ...you will be assimilated! Wait, don't run! We cannot keep up with you!

  23. Re:About as practical as a backpack full of bricks by hqm · · Score: 2, Informative

    Nobody seems to get it, the load is not some extra stuff you need to put in your pack - the machine just needs some weight to swing around. So the weight can be your dirty laundry, tent, laptop, whatever is in the pack already.

  24. A picture of it by Call+Me+Black+Cloud · · Score: 3, Funny


    It took a while but I finally found a picture of it. It doesn't look too bad, and actually does look eco-friendly.