Direction and speed control device for an electronic wheelchair
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United States of America Patent
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Jul 5, 2011
Grant Date -
Jun 26, 2008
app pub date -
Dec 14, 2007
filing date -
Dec 25, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A direction and speed control device for an electronic wheelchair includes: a base member mounted on the electronic wheelchair; a manually operable pointing unit mounted on the base member and including a control stick pivotable relative to the base member; first and second three-axis g acceleration sensors, each generating a voltage output indicative of tilt of a respective one of the control stick and the base member in three orthogonal axes; and a control unit operable so as to process the voltage outputs of the first and second three-axis g acceleration sensors to generate corresponding control signals for controlling rotation direction and speed of a wheel unit of the electronic wheelchair.
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