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Any idea for straight line motion of blind people

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wolfrum:
I am working on a project to help blind people  move from  one place to another without a stick.I already make a obstacle detection and other guiding mechanisms but how to make a blind man move in a straight line ? How to guide a blind man stick to a footpath on a road?
Any sensors or guiding mechanisms?   

Mechatrommer:
compass and beep maybe.

ciccio:
Interesting project.
I'm wondering where the blind person must walk straight: in a city center? Over a sidewalk that s higher than street level? What about following, with a sonar device or something optical, the sidewalk's edge?
At the intersections, a GPS-like system may talk to the person and give her the choice of going straigh, turn left or right.
Or a GPS system may guide the person along her march..
This can work even outside the city center.

In a city, could be easy to pose cables, or to  use the cables already up in the air to carry a RF signal.
This may be received by something..

There are even integrated Gyroscopes :http://parts.digikey.com/1/parts/2514977-ic-gyroscope-angular-16soic-adxrs453brgz-rl.html

I  know, it is easy to write about the first ideas that come on, and they can be unrealizable..
Hope that your work will have good results.
Regards

vk6zgo:
Get input from blind people.
THey spend their whole life with the problem,& can tell you when you are following a dead end path in your development.

VK6ZGO

dequo:
vibrations bro, like if theres something to their right, a vibrating collar around their right ankle would let them know

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