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2012-03-05 11:26:59|  分类: 默认分类 |  标签: |举报 |字号 订阅

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Tongue Drive System Goes Inside the Mouth to Improve Performance and User Comfort
Georgia Tech News (02/20/12) Abby Vogel Robinson

Georgia Tech researchers are developing the Tongue Drive System, a wireless device that enables people with spinal cord injuries to operate a computer and maneuver a wheelchair by moving their tongues. The system consists of a dental retainer embedded with sensors, which track the location of a tiny magnet attached to the user's tongue. "By moving the sensors inside the mouth, we have created a Tongue Drive System with increased mechanical stability and comfort that is nearly unnoticeable," says Georgia Tech professor Maysam Ghovanloo. The output signals from the sensors are wirelessly transmitted to an iPod or iPhone, and software installed on the iPod interprets the user's tongue commands by determining the relative position of the magnet with respect to the array of sensors. This information is used to control the movements of a cursor on a computer screen or the movements of a powered wheelchair. The researchers also have created an interface for the system that attaches to an electric wheelchair. "During the trials, users have been able to learn to use the system, move the computer cursor quicker and with more accuracy, and maneuver through the obstacle course faster and with fewer collisions," Ghovanloo says.
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