foot
Latest
AMP-Foot 2.0 prosthesis gives the power of real feet, keeps a light step (video)
It was five years ago that prosthetics took a very literal step forward when Arizona State University's SPARKy foot offered a more natural walk, capturing the inherent kinetic energy that previously needed a big motor to replicate. Belgium's Vrije Universiteit Brussel may well carry the torch for the next wave of artificial limbs. Its second-generation Ankle Mimicking Prosthetic Foot (AMP-Foot 2.0) uses a pair of force sensors to determine the leg's relative position and let an actuator build energy when the foot bends, locking the power away to use only when the owner pushes off. The efficiency produces all the torque needed to let a 165-pound person walk, but with just a 30W to 60W motor versus SPARKy's 150W -- a big help to battery life that also reduces the AMP-Foot 2.0's weight to that of the fleshy kind. We don't know how likely it is the Belgian prosthesis goes beyond the prototype phase; if we had our way, it would move just as quickly as future wearers undoubtedly will.
Bipedal robots learn to shuffle, evolve toward doing the twist (video)
Yes, some robots are evolving to a point where they can play instruments and swing a hammer. Hilariously, though, bipedal robots are still awful at turning in a tight radius. Several presenters at the International Conference on Robotics and Automation have been working on a solution: instead of making them take steps, program robots to shuffle. This allows turning without complex weight-shifting -- every time your foot leaves the ground, you have to adjust your balance to remain upright. Keeping your feet on the ground avoids that fairly complicated process, and can make robot-turning quicker, and possible in confined spaces; most current bipedal bots require lots of time and space to turn. See the video after the break for an example from Japan's Osaka Electro-Communication University. It may look like a metal man shuffling his feet, but it's an important step toward our robot-dominated future. [Thanks, Henry]
Multitoe floor shows us the logical next step (video)
If the toe mouse just wasn't grand enough for you, how about an entire floor to practice your foot-based inputs on? Researchers at Potsdam's (that's in Germany, yo) Hasso Plattner Institut have put together a multitouch floor that recognizes individual users by their shoe pattern and responds to such universally familiar actions as stomping your feet and tapping your toes. The so-called multitoe project works on the basis of frustrated total internal reflection, which allows it to ignore inactive users while being precise enough to recognize foot postures. Follow us after the break to see this back-projected proof of concept in action. [Photo by Kay Herschelmann]
Toe Mouse!
You know what, the more we look at this thing, the less crazy we think it is. While the concept of mousing around your desktop on foot may appear foreign at first, we imagine we can get used to it after a while. Not that it's designed for lazybones like us anyway, as the wireless Toe Mouse concept is primarily intended to help out people with upper limb disabilities, who aren't able to navigate in the usual manner. Just to score some extra flair points, designer Liu Yi also points out it has a "streamline model that symbolizes the motorboat surfing the internet." So it's not just practical, it's also poetic. Click the source link for more pictures of this flip flop-inspired creation.
Energy-recycling foot makes it easier for amputees to walk
What's better than an artificial nose? Why, an artificial foot, of course! University of Michigan researchers have developed a new prosthetic foot that could one day make it much easier for amputees to walk. Put simply, this new prototype drastically cuts the energy spent per step, as it harnesses the energy exerted when taking a step and enhances the power of ankle push-off. The device is able to capture dissipated energy, and an inbuilt microcontroller tells the foot to return the energy to the system at precisely the right time. Tests have shown that those using this here foot spent just 14 percent more energy to walk than one would spend when walking naturally, which is a rather significant decrease from the 23 percent uptick experienced with conventional prostheses. If you're still baffled, there's a pretty wicked video demonstration waiting for you after the break. %Gallery-86121%
Japanese foot-massaging machine pleads innocent to killing three people
So, we're not really sure what's going on here, but three people have been killed by mis-using a Japanese foot massager. We've only got specific details about one death, which happened when a woman removed the protective cloth cover from the machine -- called the Shape-up Roller 2 -- then strangled herself when it got caught on her collar as she tried to use it on her neck. The manufacturer, Matoba Electric, issued a warning against removing the cover or using the device other than as directed, but has not yet recalled the device, which seems to be powerful enough to massage the tension out of a T-Rex's feet. We've got a feeling there won't be a Shape-up Roller 3 anytime soon. Video of a Japanese news broadcast about the accidents after the break. [Thanks, Mechelle]
MIT gurus developing bionic feet / ankles
Leave it to the brilliant minds at MIT's Biomechatronics Lab to crank out yet another bionic limb, as a newfangled mechanical foot / ankle combo is apparently on the minds of more than a few of its researchers. In a recent patent application, the team describes an "artificial foot and ankle joint" consisting of a "leaf spring foot member," flexible elastic ankle, and an actuator motor that applies force to the ankle. Aside from sporting a fairly intelligent system to improving one's gait, it also boasts a built-in safety feature that prevents foot rotation beyond a specified angle, and the internal sensors can also activate the motors at different intervals depending on the surface in which one is walking. The prosthetic feet join a horde of other bionic limbs and appendages meant to make life as an amputee a fair bit easier, and as terrific as this here invention sounds, we're betting the Olympic committee dashes your hopes of illegally obliterating a few running records by barring these from basic competitions.[Via NewScientistTech]
Adhesive feet for the careful gamer
Gametech has created another head-scratching Wii accessory (in that it's baffling, not that it scratches your head for you). This time, it's the Taore na Sheet W (Collapsing Sheet W): a set of adhesive rubber feet that secure your Wii stand and sensor bar to their locations, and, just to be sure, secure the Wii to its stand.With no controller cords to trip over, we had to think about who the target audience for this product was. Well, we didn't have to think about it for too long before one of our cats knocked a picture frame off of the coffee table. This product makes a lot of sense for cat owners![Via GAME Watch]
