A Magnetic Resonance Coupling Based Touchless Pad for Human-Computer Interfacing

In this paper, an artificial human interface based on magnetic resonance coupling is proposed to detect and sense the direction of movement of a fingertip. The finger movement is analyzed by recognizing the change in magnetic coupling observed between a static transmitter coil and a static receiver coil array due to presence of a small coil resonator placed at the fingertip. By measuring induce voltage responses in the spatially distributed receiver coil array, the movement of the resonator coil is characterized. A commercial software Ansys EM suite 19.1 is utilized to demonstrate applicability of the proposed design. The fingertip movement is examined by moving the resonator in various directions and the observed results corroborate the claims. Therefore, the proposed touchless pad is found well suitable for infection free accessibility of the computer systems.