An Arch-Shaped Intraoral Tongue Drive System with Built-in Tongue-Computer Interfacing SoC
AbstractWe present a new arch-shaped intraoral Tongue Drive System (iTDS) designed to occupy the buccal shelf in the user’s mouth. The new arch-shaped iTDS, which will be referred to as the iTDS-2, incorporates a system-on-a-chip (SoC) that amplifies and digitizes the raw magnetic sensor data and sends it wirelessly to an external TDS universal interface (TDS-UI) via an inductive coil or a planar inverted-F antenna. A built-in transmitter (Tx) employs a dual-band radio that operates at either 27 MHz or 432 MHz band, according to the wireless link quality. A built-in super-regenerative receiver (SR-Rx) monitors the wireless link quality and switches the band if the link quality is below a predetermined threshold. An accompanying ultra-low power FPGA generates data packets for the Tx and handles digital control functions. The custom-designed TDS-UI receives raw magnetic sensor data from the iTDS-2, recognizes the intended user commands by the sensor signal processing (SSP) algorithm running in a smartphone, and delivers the classified commands to the target devices, such as a personal computer or a powered wheelchair. We evaluated the iTDS-2 prototype using center-out and maze navigation tasks on two human subjects, which proved its functionality. The subjects’ performance with the iTDS-2 was improved by 22% over its predecessor, reported in our earlier publication. View Full-Text
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Park, H.; Ghovanloo, M. An Arch-Shaped Intraoral Tongue Drive System with Built-in Tongue-Computer Interfacing SoC. Sensors 2014, 14, 21565-21587.
Park H, Ghovanloo M. An Arch-Shaped Intraoral Tongue Drive System with Built-in Tongue-Computer Interfacing SoC. Sensors. 2014; 14(11):21565-21587.Chicago/Turabian Style
Park, Hangue; Ghovanloo, Maysam. 2014. "An Arch-Shaped Intraoral Tongue Drive System with Built-in Tongue-Computer Interfacing SoC." Sensors 14, no. 11: 21565-21587.