Introduction A tongue-operated assistive technology that enables individuals with severe physical impairments to control their environments. 1.
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Introduction
A tongue-operated assistive technology that enables individuals with severe physical
impairments to control their environments. 1
Tongue Drive System: HardwareHeadset Components
1. Sensors:Four 3-axial magneto-resistive sensors (two on each pole)
3. Control Unit:MCU: TI CC25102.4 GHz RF Transceiver
2. Magnet:Disk-shaped [4.8mm 1.5mm]Embedded in a titanium tongue stud
4. Battery:130 mAh, 3.7 V, plus power management circuit
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Tongue Drive System: Commands
TDS Discrete Commands Positions
TDS Waveforms Samples of each Command
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Left-SideCommands
Right-SideCommands
Terminology
Classifier Combinations Stacking Majority Voting (Nine Classifiers)
Assessment Correctness Rejection Error? Misclassification Error
Five Bayesian: Linear Dia. Linear Quadratic Dia. Quad. MahalanobisFour KNNs: Euclidean City Block Cosine Correlation
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Previous Work: mSSP Algorithm
RestingLeftUpLeft Click
RestingRightDownRight Click
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Methodology
Human Trials Dataset: Able-bodied subjects from two
Universities (4-NUB & 4-GTB) 8 participants x 5 sessions = 40
experiments
Calibration Training Testing6
ITR
Results and Analysis:First Stage: Left-Side vs. Right-Side Classification
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NUB = Northwestern UniversityGTB = Georgia Tech 20.1
%
2.02%
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