Popular Science gets a sneak preview of Honda's computerized "walking assist devices"

Like any good New Yorker, I love to walk, but as a group of Popular Science editors strolled back to the office today from a hands-on demo of Honda's latest prototype, we felt sadly ... pedestrian. We had gone to see a team of Japanese engineers from the company proudly showing off their new mobility technology -- a pair of wearable robotic "Walking Assist Devices." Strapping the powered gadgets to our legs felt silly, but after taking them off, the sensation of being cast back among unaugmented humans, forced to walk completely under our own primitive power, was a distinct comedown.

The two prototypes, which will be exhibited next week at Detroit's Society of Automotive Engineers World Congress, are designed to provide walking assistance for people with weakened legs or those who need to perform a lot of fatiguing leg work. We gathered in a room at a Times Square hotel, met the Japanese engineers who invented the devices (the company holds more than 130 patents on the technologies involved) and got to try them on.

Stride Management Assist:  courtesy Honda
The first, which looks a bit like an industrial-strength garter belt, is called "Stride Management Assist" (there will doubtless be a renaming process before the devices come to the U.S. market). It secures around the user's waist and grips each thigh. Then, by monitoring the angle of the hips, it calculates the wearer's stride and provides helpful force -- not exactly moving your legs for you, but what the makers call "cooperative control," lengthening the stride and regulating the pace of walking.

In motion, it feels like the machine doesn't want you to amble, pressing instead for a high-stepping march. Wearing it, I climbed a set of steps, feeling like I could climb forever without tiring, and then stopped at the top to pose for a photo -- or rather, tried to stop, while the device walked me onward a few paces. It must take some getting used to.

The second device, "Bodyweight Support Assist," consists of a motorized, articulated frame, with a pair of shoes at one end and a bicycle-style saddle at the other. You switch on the device -- each strut's servomotor starts to whir individually -- zip on the shoes, and then lift the padded saddle up into place between your thighs, where it exerts an upward force of 3 kilograms to help support the wearer's body weight. Not the most comfortable place to experience 3 kilograms of upward force, it turns out.

When you bend your knees to crouch down, the force is increased up to 17 kilograms, making it very easy to hold a crouching posture for long periods of time. Proposed users of the device include factory workers who crouch to lift and look under things, as well as, according to the presentation we were shown, sightseers.

Honda's reps were unable to offer specific information as to when the devices might come to market, or what exactly the market might be. The versatile technology promises to be very helpful, even life-changing, for people who need mobility assistance, assuming that the triple barriers of price, availability, and fear of strapping robots to your legs can be overcome.

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8 Comments

The Stride Management Assist sounds very interesting and promising for the medical field of Physical therapy for people learning to walk again. The exoskeletal design is good and not too dramatic to the casual viewer. I'm worried about the fact that it wanted to keep on moving at the top of the stairs though.
I think people might be reluctant to wear the Bodyweight Support Assist because it looks a bit freakish. A more fitting design to the exterior of the legs with a lower back support and harness instead of the saddle might be more comfortable. Check out the design used by Sarcos-Raytheon's XOS Exoskeleton.

I think this has great potential. For example, to help people with severe spinal problems that make it very painful to walk. Such as in my case, if some of the load was taken off the back by "sitting" on seat that appears on the device. Often, just removing a kilo or two of weight by leaning on the handle of a shopping cart as I walk will do the trick.

I would like very much to be able to buy or "test" one of the devices!

William W Morgan

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Author of:
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On... Job Security: End of Unemployment & Poverty
On... Democracy & Freedom: Mutually Exclusive Concepts (forthcoming)
The Conquest of Ignorance and Human Survival (forthcoming)

Billy Dion

For those who can not walk on there own this is a God sent!

I would rather learn to walk on my hands than succumb to laziness coupling a leg handicap and use this freakish thing.

If I was much older and that wasn't possible, a non-electric wheelchair would suffice.

This looks very promising for the field of physical therapy. As for the "sightseeing" part, that sounds quite absurd to me.

I think people would trade the look of the device for the opportunity to walk any day. I hope they come up with an easy way to adjust the aid that the robo-legs provide; that way the user could gradually build strength as if it was physical therapy all the time. Definitely a remarkable device for sure.

- Scott Thourson
(Mechanical Engineering Student at Bradley University)

whoever said this was "freakish" should consider that this is a life changing device. it could help thousands of peole who are otherwise disabled. think about that before saying it's "freakish".

Can you imagin being able to return mobility to a person who has not been able to standup and walk. No cost would be too much. The device even looks futuristic and would not make the person feel self-conscious.



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