EI-Lite: Electrical Impedance Sensing for Micro-gesture Recognition and Pinch Force Estimation
summary
A lightweight wrist-worn electrical impedance board with 16 electrodes and 100 Hz sampling recognizes six micro-gestures plus idle and estimates index-thumb pinch force in Newtons; ablation across 13 users yields optimal electrode placement near the distal radio‑ulnar joint, and a 3D‑printed form is built. Trained on data from 15 participants (35k windows), models reach 96.33% accuracy for gestures, use few‑shot (40 windows ≈24s) to hit >80% for new users, and regress force with 0.55 N mean‑force variance.
AI-written summary · about