Intelligent wheelchair

Sep 23, 2006 1 Replies

Dear friends... This is Mahesh Kedari. I am struggelling to design and implement the Intelligent wheelchair for handicaps. This wheelchair is to be designed considering the uncomfortable mobility of physically challenged people. many a times it is not possible for them to drive the wheelchair to the desired location using handling tools. Hence i am trying to introduce an ARTIFICIAL INTELLIGENCE in this system. This wheelchair will have a learning ability so that to adopt the new location. User all need to do is just to show the path once to this wheel chair. And tell machine, the name of this new location. Now when this person wishes to go back to this location, he just need to give a voice command to this wheelchair. And it'll take him to that location tackling the obstacles in its path. For obstacle tackling, I am using ultrasonic and infrared sensors. Ultrasonic for obstacle 100 to 150 cm away, and infrared for small obstacles nearby such as toys n specially for doorjams. I am trying to use pentium processor for its programming. And a DSP processor ( not decided exactly which one ) for voice command identification. This is the overview of my implementation.



I request all INTELLIGENT MINDS to contribute your views, suggestions, tips, implementation guidlines, doubts with me on this news group.



Thanking you.



Does the speech recognition require training for a specific user's voice?

Do commands require verification (repeat command or add "execute" to command)?

How good is the noise rejection (audible noise and electrical/magnetic fields from appliances)?

When does a discontinuity in the floor become an obstacle to avoid?

10mm (low threshold) 25mm (high threshold, transition from vinyl floor to tile floor, typical water retention threshold in a public restroom)

What is the chair's terrain capability?

Interior: smooth floor (vinyl, troweled concrete, hardwood) textured (screeded concrete, tile, brick, mosaic) carpet (tight weave, indoor/outdoor, pile, shag)

Exterior: concrete (sidewalk, driveway, roadway [for crossing streets]) macadam (as above) hard packed dirt (nature trail)

Can the chair find its way back to the recharging station?

John

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