Wheelchair Direction Control by Acquiring Vocal Cords Vibration
|關鍵字:||聲帶振動;現場可程式邏輯閘陣列;電動輪椅;語音辨識;Vocal cords vibration;FPGA;powered wheelchair;speech recognition|
The powered wheelchair with joystick is the commonest operation. However, to steer their own powered wheelchair through a conventional joystick is difficult for people who experience total paralysis in all four limbs. Therefore, the development of a vocal cords vibration control wheelchair system is essential to help those patients moving around on their will. The basic pronunciation can be distinguished by the difference of the resulting analog waveform (signals), and further instructions (commands) can be carried out by the vocal cords vibration control wheelchair system. For example, if the word “forward” is pronounced in Chinese, the wheelchair will then move forward automatically. To instruct the movement of wheelchair by determining the variation of the output signal which generated by vocal cords is not an easy task. Hence, a rapid and real-time processor with FPGA system, National Instrument (NI, Austin, TX) CompactRIO (cRIO-9014) is used as the develop platform. Base on its flexibility, small size, and rugged form. In addition, when the wheelchair moves, CompactRIO can perform normally with impact vibration. The most important thing is that CompactRIO has real-time processor, it can analyze the analog signal that generated by user rapidly and reactively response the operations that wheelchair should do.
|Appears in Collections:||Thesis|
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