An ultrasonic head position interface for wheelchair control |
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Authors: | David L Jaffe |
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Institution: | 1. From the Palo Alto Veterans Administration Medical Center, Rehabilitative Engineering Research and Development Center, 94304, Palo Alto, California
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Abstract: | To give quadriplegics independent mobility, a “smart” microprocessor-based electric wheelchair has been developed by the Palo Alto Veterans Administration Medical Center and Stanford University. Ultrasound distance-ranging technology is employed to track the user's head position in two-dimensional space. These data are then used to determine the chair's direction and speed. A working prototype vehicle using this type of motion control has been successfully demonstrated. Obstacle detection, wall-following, and cruise control modes are other implemented features of the current design. |
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