Amos Winter: The cheap all-terrain wheelchair

496,059 views ・ 2012-11-20

TED


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00:00
Translator: Joseph Geni Reviewer: Morton Bast
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翻译人员: Minji Seo 校对人员: Yingxue Sun
00:15
Living with a physical disability isn't easy
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对残疾人而言,在世界上任何一个地方
00:19
anywhere in the world,
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生活都很不容易
00:21
but if you live in a country like the United States,
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但如果他们生活在像美国这样的国家
00:24
there's certain appurtenances available to you that do make life easier.
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至少可以得到很多切实的让生活更便利的辅助
00:27
So if you're in a building, you can take an elevator.
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比如在建筑物里,你可以乘电梯
00:29
If you're crossing the street, you have sidewalk cutouts.
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过马路时,你可以走专门的人行道
00:32
And if you have to travel some distance farther
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如果你想要去很远的地方
00:34
than you can do under your own power, there's accessible vehicles,
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你可以坐现成的车
00:37
and if you can't afford one of those,
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即使你付不起费用
00:39
there's accessible public transportation.
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你依然可以选择公共交通
00:41
But in the developing world, things are quite different.
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然而在发展中国家,情况就非常不同
00:44
There's 40 million people who need a wheelchair but don't have one,
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有4千万人急需轮椅,却得不到
00:47
and the majority of these people live in rural areas,
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这些人大多数住在乡村
00:51
where the only connections to community, to employment, to education,
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他们只能在崎岖的路上
00:55
are by traveling long distances on rough terrain
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通过自己的努力行走很长的距离
00:57
often under their own power.
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才有机会进入社区,获得工作,接受教育
01:00
And the devices usually available to these people
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更糟糕的是,这些人的代步工具并不合适当地的环境
01:02
are not made for that context, break down quickly,
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它们容易损坏
01:05
and are hard to repair.
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而且难以修复
01:07
I started looking at wheelchairs in developing countries in 2005,
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从2005年起,我开始关注了发展中国家的轮椅问题
01:12
when I spent the summer assessing the state of technology in Tanzania,
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我花了一个夏天在坦桑尼亚考察科技状况
01:15
and I talked to wheelchair users, wheelchair manufacturers, disability groups,
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我与轮椅使用者,轮椅制造商,残疾人团体进行了交谈
01:19
and what stood out to me
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结果我发现
01:21
is that there wasn't a device available
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现有的工具
01:24
that was designed for rural areas, that could go fast
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都不是专门农村地区设计的
01:26
and efficiently on many types of terrain.
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它不能在多种地形上高速高效地行进
01:29
So being a mechanical engineer,
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因此,作为一个机械工程师
01:31
being at MIT and having lots of resources available to me,
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在麻省理工我拥有许多可用的资源
01:33
I thought I'd try to do something about it.
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我想我要尝试做点什么
01:36
Now when you're talking about trying to travel
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当你们谈到在崎岖的路上
01:39
long distances on rough terrain,
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长距离行进时
01:41
I immediately thought of a mountain bike,
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我立刻想到了山地自行车
01:43
and a mountain bike's good at doing this
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山地自行车很擅长做这件事
01:44
because it has a gear train,
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因为它有变速器
01:46
and you can shift to a low gear if you have to climb a hill
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你可以调到低档来爬坡
01:49
or go through mud or sand
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或者穿越泥浆和沙地
01:50
and you get a lot of torque but a low speed.
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力矩变长,但是速度很慢
01:52
And if you want to go faster, say on pavement,
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如果你想骑得快一点,比如在人行道上
01:54
you can shift to a high gear,
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你可以调到高档
01:56
and you get less torque, but higher speeds.
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力矩变短,但速度加快
01:58
So the logical evolution here
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顺着这个逻辑
02:00
is to just make a wheelchair with mountain bike components,
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只需要在轮椅上加装山地车的零件
02:02
which many people have done.
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这件事很多人都做过
02:04
But these are two products available in the U.S. that
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但美国市场上的两款产品
02:07
would be difficult to transfer into developing countries
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想进入发展中国家都很困难
因为他们太贵了,太贵了
02:10
because they're much, much too expensive.
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02:12
And the context I'm talking about is where
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我所说的背景是
02:14
you need to have a product that is less than 200 dollars.
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你需要的是一个低于200美元的产品
02:18
And this ideal product would also be able to go
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而且这个理想的产品还能够每天行驶五公里左右
02:21
about five kilometers a day so you could get to your job, get to school,
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这样你才能去上班,上学
02:25
and do it on many, many different types of terrain.
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以及在许多许多不同地形上使用它
02:27
But when you get home or want to go indoors at your work,
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但当你到家了或者工作时需要进入室内
02:30
it's got to be small enough and maneuverable enough to use inside.
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它足够小足够灵巧,从而能在室内使用
02:34
And furthermore, if you want it to last a long time out in rural areas,
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此外,如果你想在乡村长时间使用它
02:37
it has to be repairable using the local tools, materials and knowledge
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那它必须是可修理的
02:41
in those contexts.
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可以使用当地的工具,材料和知识来修理塔
02:44
So the real crux of the problem here is,
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所以问题的关键在于
02:47
how do you make a system that's a simple device
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怎么制造一个系统
02:50
but gives you a large mechanical advantage?
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既简单,又能带来很大的好处
02:53
How do you make a mountain bike for your arms
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怎样为自己的双臂制造一辆山地车
02:55
that doesn't have the mountain bike cost and complexity?
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却比真正的山地车便宜而且简单呢
02:57
So as is the case with simple solutions,
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答案常常就在眼前
03:00
oftentimes the answer is right in front of your face, and for us it was levers.
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那就是杠杆
我们一直在利用杠杆,工具,门把手,自行车部件
03:04
We use levers all the time, in tools, doorknobs, bicycle parts.
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03:08
And that moment of inspiration, that key invention moment,
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灵感和关键发明来临的那一刻
03:11
was when I was sitting in front of my design notebook
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我正坐在我的设计手册前
我设想有人在拉一根杠杆
03:14
and I started thinking about somebody grabbing a lever,
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03:16
and if they grab near the end of the lever,
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如果他们在靠近杠杆末端的地方拉
03:18
they can get an effectively long lever
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他们就可以获得一个有效的长杠杆
03:20
and produce a lot of torque as they push back and forth,
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从而在来回推动时产生一个长力矩
03:23
and effectively get a low gear.
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以及一个低速齿轮
03:25
And as they slide their hand down the lever,
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当他们把手顺着杠杆滑下去
03:28
they can push with a smaller effective lever length,
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他们推的杠杆长度变短
03:31
but push through a bigger angle every stroke,
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但是每次推动的角度更大
这产生一个更高的旋转速度和一个高速齿轮
03:33
which makes a faster rotational speed, and gives you an effective high gear.
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03:36
So what's exciting about this system
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这个系统令人兴奋之处在于
03:38
is that it's really, really mechanically simple,
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它的机械结构真的,真的非常简单
03:41
and you could make it using technology
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你可以用通行了几百年的技术
来制造它
03:43
that's been around for hundreds of years.
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03:44
So seeing this in practice,
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看实际运行状况
03:47
this is the Leveraged Freedom Chair that,
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这就是杠杆化自由轮椅
经过几年的研究实验后
03:49
after a few years of development,
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03:50
we're now going into production with,
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我们即将要生产的新一代轮椅
03:52
and this is a full-time wheelchair user --
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这是一位需要一直使用轮椅的危地马拉人,
03:54
he's paralyzed -- in Guatemala,
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他已经瘫痪了
03:56
and you see he's able to traverse pretty rough terrain.
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你可以看到他能够穿越相当崎岖的路面
04:00
Again, the key innovation of this technology is that when he wants to go fast,
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这项科技的核心创新点在于
04:04
he just grabs the levers near the pivots and goes through a big angle every stroke,
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当他想走的快点,他可以握住靠近抽心的位置作大角度的推动
04:08
and as the going gets tougher, he just slides his hands up the levers,
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当进入较糟的路面,他只需要握住握杠的上部
04:11
creates more torque, and kind of bench-presses his way
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就可以推动较大的扭力
04:14
out of trouble through the rough terrain.
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让他自己推离不平地地形
04:16
Now the big, important point here is that
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这种设计最大的重点在于
04:19
the person is the complex machine in this system.
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操作者是整个系统中的复杂机器
04:22
It's the person that's sliding his hands up and down the levers,
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使用者移动他自己的手来精密控制轮椅
04:25
so the mechanism itself can be very simple
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因此机制本身很简单
04:28
and composed of bicycle parts you can get anywhere in the world.
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而自行车的零件在世界任何一个地方都可以得到
04:31
Because those bicycle parts
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因为自行车零件
04:33
are so ubiquitously available, they're super-cheap.
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非常常见,所以他们的造价很便宜
04:35
They're made by the gazillions in China and India,
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中国和印度的许许多多的工人都可以制造这些零件
04:37
and we can source them anywhere in the world,
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我们可以在世界上任何地方买到需要的零件
04:39
build the chair anywhere, and most importantly repair it,
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在任何地方制造轮椅,并且最重要的是
04:42
even out in a village with a local bicycle mechanic
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我们可以在任何地方修理它们。这一点,即使是居住在乡村里
04:44
who has local tools, knowledge and parts available.
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只有当地的工具,知识和零件的自行车修理师也可以办到
04:49
Now, when you want to use the LFC indoors,
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当你需要在室内使用时杠杆化自由轮椅时
04:51
all you have to do is pull the levers out of the drivetrain,
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你只要把杠杆从传动系统中拔出来
04:55
stow them in the frame, and it converts into a normal wheelchair
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放在支架内,它就变成了普通轮椅
04:58
that you can use just like any other normal wheelchair,
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于是你就可以把它当做普通轮椅来使用
05:01
and we sized it like a normal wheelchair,
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我们按照普通轮椅的尺寸来打造它
05:03
so it's narrow enough to fit through a standard doorway,
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它的宽足以通过标准的走廊
05:07
it's low enough to fit under a table,
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它的高足以从桌子底下通过
05:11
and it's small and maneuverable enough to fit in a bathroom
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它小而灵巧,足以在浴室中使用
05:15
and this is important so the user can get up close to a toilet,
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这重要性在于让使用者可以靠近马桶
从轮椅坐过去
05:18
and be able to transfer off
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05:19
just like he could in a normal wheelchair.
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就像他,在一般轮椅也能做到的
05:25
Now, there's three important points that I want to stress
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我想强调三点
05:28
that I think really hit home in this project.
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这三点触及到了这个项目的精髓
05:32
The first is that this product works well because
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第一点是项目成功的原因在于
05:35
we were effectively able to combine
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我们有效地把严谨的工程科学
05:37
rigorous engineering science and analysis with user-centered design
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与以用户为中心的设计分析结合起来
05:41
focused on the social and usage and economic factors
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聚焦于社会,利用和经济因素
05:45
important to wheelchair users in the developing countries.
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这对发展中国家的轮椅使用者非常重要
05:47
So I'm an academic at MIT, and I'm a mechanical engineer,
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我是麻省理工学院的学者,我也是一个机械工程师
05:50
so I can do things like look at the type of terrain you want to travel on,
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我可以通过观察你所行进的路面的类型
05:53
and figure out how much resistance it should impose,
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计算出它会产生多大的阻力
05:56
look at the parts we have available and mix and match them
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通过了解我们已有的零件,混合并拼凑它们
05:59
to figure out what sort of gear trains we can use,
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想出我们可以使用哪一种变速器
06:02
and then look at the power and force you can get out of your upper body
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通过考虑上肢可以产生的能量和力气
06:05
to analyze how fast you should be able to go in this chair
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分析出当你把手臂在杠杆上面上下移动时
06:07
as you put your arms up and down the levers.
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能以多快的速度行进
06:09
So as a wet-behind-the-ears student, excited,
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根据这些,我的菜鸟学生们很兴奋地
06:13
our team made a prototype,
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制造了一个样品
06:15
brought that prototype to Tanzania, Kenya and Vietnam in 2008,
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在2008年把这个初样带到了坦桑尼亚,肯尼亚和越南
06:20
and found it was terrible
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发现它非常糟糕
06:22
because we didn't get enough input from users.
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因为我们没有得到足够的使用者的反馈
06:24
So because we tested it with wheelchair users,
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所以我们与轮椅使用者,轮椅制造商
06:27
with wheelchair manufacturers, we got that feedback from them,
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一起进行测试,收集他们的建议
06:30
not just articulating their problems, but articulating their solutions,
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不仅仅是采集他们的问题,而是采集了他们认为好的解决方法
06:33
and worked together to go back to the drawing board and make a new design,
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然后我们回来重新画了设计图
06:37
which we brought back to East Africa in '09
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09年,我的团队把经过修改的样品带到了东非
06:39
that worked a lot better than a normal wheelchair on rough terrain,
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新一代样品在崎岖路面上的行进效果比普通轮椅要好得多
06:42
but it still didn't work well indoors because it was too big,
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但在室内行进效果仍然不好
06:45
it was heavy, it was hard to move around,
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因为它太大,太重,难以转动
06:47
so again with that user feedback, we went back to the drawing board,
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得到了使用者的回馈,我们再次回到了试图板上
06:50
came up with a better design, 20 pounds lighter,
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想出了一个更好的设计。新设计比之前轻了20磅
06:53
as narrow as a regular wheelchair, tested that in a field trial in Guatemala,
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跟常规轮椅一样窄。我们在危地马拉进行了一次路面测试
06:56
and that advanced the product to the point
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这项产品
06:58
where we have now that it's going into production.
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进展到了现在我们能开始量产的状态
07:02
Now also being engineering scientists,
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同时作为工程科学家
07:04
we were able to quantify the performance benefits of the Leveraged Freedom Chair,
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我们可以量化杠杆化自由轮椅的表现
07:08
so here are some shots of our trial in Guatemala
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这是几张我们在瓜地马拉做试验的照片
07:10
where we tested the LFC on village terrain,
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我们在农村里测试杠杆是轮椅
07:14
and tested people's biomechanical outputs,
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也测量人们的生物力学产出
07:16
their oxygen consumption, how fast they go,
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氧气消耗量,进行速度
07:18
how much power they're putting out,
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及他们推动轮椅所消耗的力量
与一般轮椅以及杠杆式轮椅比较
07:20
both in their regular wheelchairs and using the LFC,
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07:23
and we found that the LFC is about 80 percent faster
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我们发现在这些环境里
07:25
going on these terrains than a normal wheelchair.
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杠杆式轮椅比起一般轮椅快了百分之八十
比起一般的轮椅,也多了百分之四十的效率
07:28
It's also about 40 percent more efficient than a regular wheelchair,
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07:31
and because of the mechanical advantage you get from the levers,
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也由于杠杆的机械特性
07:34
you can produce 50 percent higher torque
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你可以多产生百分之五十的扭力
07:35
and really muscle your way through the really, really rough terrain.
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让你可以走过非常崎岖的道路
07:39
Now the second lesson that we learned in this is that
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第二,我们学到了
07:43
the constraints on this design really push the innovation,
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设计上的限制也推动了创新
07:46
because we had to hit such a low price point,
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因为我们必须降低价格
07:48
because we had to make a device that could travel
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因为我们要做出一样可以适应很多地形
07:50
on many, many types of terrain but still be usable indoors,
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能在室内使用
07:53
and be simple enough to repair,
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设计简单易于修理的轮椅
07:55
we ended up with a fundamentally new product,
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我们最后发明了全新的产品
07:58
a new product that is an innovation
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一样新产品
08:00
in a space that really hasn't changed in a hundred years.
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过去一百从未出现的创新
08:03
And these are all merits that are not just good in the developing world.
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这些优点不只能套用在开发中国家
08:06
Why not in countries like the U.S. too?
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也可以带到像美国这样的国家
08:09
So we teamed up with Continuum,
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我们与Continuum合作
08:10
a local product design firm here in Boston
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这是一家在波士顿当地的制造商
打造了一款高阶版本
08:13
to make the high-end version, the developed world version,
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08:16
that we'll probably sell primarily in the U.S. and Europe,
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我们会在美国及欧洲
08:18
but to higher-income buyers.
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贩卖给高收入的顾客
08:21
And the final point I want to make is that I think
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最后我想说的
08:24
this project worked well because we engaged
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这项计划能成功
08:27
all the stakeholders that buy into this project and are important to consider
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是因为我们结合了所有参与计划的人
08:32
in bringing the technology from inception of an idea
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将这项科技从概念
08:35
through innovation, validation, commercialization and dissemination,
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到创新,验证,商用,推广
08:39
and that cycle has to start and end with end users.
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这链结于使用者紧密相扣
08:43
These are the people that define the requirements of the technology,
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他们有对这项科技的需求
08:46
and these are the people that have to give the thumbs-up at the end,
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最终他们举起了大拇指称赞
08:48
and say, "Yeah, it actually works. It meets our needs."
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而且说“这很好用,刚好符合我们的需求”
像我一样在学术界的人
08:51
So people like me in the academic space,
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我们可以做一些像创新,分析,测试
08:53
we can do things like innovate and analyze and test,
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08:56
create data and make bench-level prototypes,
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建立资料,设计实验阶段的原型机种
08:59
but how do you get that bench-level prototype to commercialization?
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但你要如何将原型机种带入到商业产品
09:02
So we need gap-fillers like Continuum that can work on commercializing,
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我们需要像Continuum可以帮助我们跨越屏障的公司
09:06
and we started a whole NGO to bring our chair to market --
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我们成立了一个非政府组织"Global Research Innovation Technology"
09:08
Global Research Innovation Technology --
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来将我们的轮椅带到市场上
09:11
and then we also teamed up with a big manufacturer in India, Pinnacle Industries,
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并于印度的大型制造商 Pinnacle Industries 合作
09:14
that's tooled up now to make 500 chairs a month
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每个月制造500台轮椅
下个月
09:17
and will make the first batch of 200 next month,
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09:18
which will be delivered in India.
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第一批将在在印度推出
09:20
And then finally, to get this out to the people in scale,
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最终,为了把它大量地提供给人们
09:23
we teamed up with the largest disability organization
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我们与全球最大的身障组织
Jaipur Foot 一同合作
09:26
in the world, Jaipur Foot.
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09:28
Now what's powerful about this model
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这个模式的好处
09:30
is when you bring together all these stakeholders
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是当你结合所有
09:33
that represent each link in the chain
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参与这个链结的人
09:35
from inception of an idea
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从概念的发想
09:37
all the way to implementation in the field,
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到现实中的实作
09:40
that's where the magic happens.
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神奇的事发生了
09:42
That's where you can take a guy like me, an academic,
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你可以找到一个像我一样
09:44
but analyze and test and create a new technology
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做分析,测试,设计的人
09:47
and quantitatively determine how much better the performance is.
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并且量化它的性能有多好
09:51
You can connect with stakeholders like the manufacturers
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同时也连结赚钱的制造商
跟他们面对面
09:54
and talk with them face-to-face and leverage their
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整合他们的制造程序,客户
09:56
local knowledge of manufacturing practices and their clients
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09:59
and combine that knowledge with our engineering knowledge
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在与我们的工程知识结合
10:01
to create something greater than either of us could have done alone.
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做出一个比我们各自单独能做的还要好的东西
10:05
And then you can also engage the end user
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你也必须拉进使用者一起参与设计过程
10:07
in the design process, and not just ask him what he needs,
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不只是问他们所需要的
10:10
but ask him how he thinks it can be achieved.
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也问他们认为什么是行得通的
10:13
And this picture was taken in India in our last field trial,
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这是我们最后一次在印度做实验时拍的照片
10:16
where we had a 90-percent adoption rate where people
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有九成的人从一般轮椅
更换到使用我们的杠杆式轮椅
10:19
switched to using our Leveraged Freedom Chair over their normal wheelchair,
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10:22
and this picture specifically is of Ashok,
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特别是Ashok
10:25
and Ashok had a spinal injury when he fell out of a tree,
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Ashok 从树中掉下来后脊柱损伤瘫痪
10:28
and he had been working at a tailor, but once he was injured
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以前他是个裁缝师,自从受伤后
10:31
he wasn't able to transport himself from his house
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他没办法坐在一般轮椅上
10:34
over a kilometer to his shop in his normal wheelchair.
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从一公里远的家里移动到市集
10:37
The road was too rough.
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因为路程太颠簸了
10:38
But the day after he got an LFC, he hopped in it,
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然而,拿到杠杆式轮椅的同一天
10:41
rode that kilometer, opened up his shop
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他就走过那一公里,开始营业了
10:43
and soon after landed a contract to make school uniforms
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并且很快地拿到了学校制服的合约
10:46
and started making money, started providing for his family again.
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开始赚钱,再次养家活口
10:49
Ashok: You also encouraged me to work.
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Ashok: 你鼓励我去工作
10:51
I rested for a day at home.
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我在家休息一天后
10:53
The next day I went to my shop.
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隔天我就去工作
10:58
Now everything is back to normal.
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现在一切都恢复正常了
11:01
Amos Winter: And thank you very much for having me today.
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Amos Winter: 感谢你们来听我演讲
11:05
(Applause)
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