Future of Engineering

Tuesday, July 1, 2008

Tongue-controlled System Assists Individuals with Disabilities

System allows them to operate powered wheelchairs and computers

The novel system developed by engineers at the Georgia Institute of Technology allows individuals with disabilities to operate a computer, control a powered wheelchair and interact with their environments simply by moving their tongues.
Georgia Tech assistant professor Maysam Ghovanloo (left) points to a small magnet attached to graduate student Xueliang Huo’s tongue that allows him to operate a computer mouse and powered wheelchair.
Maysam Ghovanloo, an assistant professor in the Georgia Tech School of Electrical and Computer Engineering along with graduate student Xueliang Huo has developed the tongue-operated assistive technology, called the Tongue Drive system.

A rice grain sized magnet is attached into an individual's tongue by implantation. Once this is done the user can control the movement of a cursor across a computer screen or a powered wheelchair around a room.

Georgia Tech Electrical and Computer Engineering graduate student Xueliang Huo moves his tongue to direct the Tongue Drive system to move the powered wheelchair in a different direction. (Georgia Tech Photo: Gary Meek)
Magnetic field sensors are mounted on a headset outside the mouth or on an orthodontic brace inside the mouth. This detects the movement of the tongue. The output signals are then wirelessly transmitted to a portable computer, which can be carried on the user’s clothing or wheelchair.

Hands and feet are connected to the brain through the spinal cord. Whereas the tongue is directly controlled by the brain through the cranial nerve. The movements of the tongue are also fast and accurate making it the most preferred choice by the researchers.

Results indicate a 100 percent accuracy for six individual commands. Based on the results one can definitely say that the future looks promising for this system.

Most people with severe disabilities have the will power to take on the world just like everybody else. What really dampens their spirit is the dependency factor. Sometimes they have to depend on friends and loved ones to carry out their everyday tasks. This system will make life easy for the individual and the caregiver.

When the going gets tough, the tough gets going.

They sure do.

Source - Gatech.edu
Watch a video of Ghovanloo describing the Tongue Drive system and its applications here.
Watch a video of Huo operating a powered wheelchair with the Tongue Drive system here.

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Comments:
this device is a big gift to many of the physically challenged people and i want more information about this device,can you send it for me
 
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