Upper Limb Prosthetic Control Using Toe Gesture Sensors

Navaraj, W. T., Heidari, H., Polishchuk, A., Shakthivel, D., Bhatia, D. and Dahiya, R. (2015) Upper Limb Prosthetic Control Using Toe Gesture Sensors. In: IEEE Sensors Conference, Busan, South Korea, 01-04 Nov 2015, pp. 1-4. ISBN 9781479982035 (doi:10.1109/ICSENS.2015.7370369)

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Abstract

Email Print Request Permissions A novel scheme to control upper-limb prosthesis with toe gesture sensing system is presented in this paper. In the proposed system, copper/polymer stack capacitive touch sensors fabricated on a flexible substrate, interfaced with electronics and wireless transmitters forms a smart sensing insole. The scheme takes advantage of the user making various gestures with their left and right hallux digits in the form of a Morse code. The touch results in change in capacitance of the sensors from 56 ??2 pF to 75??3 pF, which is readout by an interface circuitry. This is transmitted wirelessly to a computing system attached to the prosthetic hand, which controls it resulting in various upper-limb prosthetic gestures or grasp patterns depending on the corresponding mapped Morse code. The differential current at the output of the capacitor is converted into voltage through an integrator based capacitance-voltage converter(CVC), fabricated with 0.18??m CMOS technology. The CVC is interfaced with off-the-shelf components. Details of the sensor, sensor interface and system's design, fabrication, validation, and overall functional assessment are presented in this work to show the potential of using toe gestures for upper-limb prosthetic control.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Heidari, Dr Hadi and Dahiya, Dr Ravinder and Shakthivel, Dr Dhayalan and Navaraj, Mr William
Authors: Navaraj, W. T., Heidari, H., Polishchuk, A., Shakthivel, D., Bhatia, D., and Dahiya, R.
College/School:College of Science and Engineering > School of Engineering
College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
ISBN:9781479982035
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
663861Engineering Fellowships for Growth: Printed Tactile SKINRavinder DahiyaEngineering & Physical Sciences Research Council (EPSRC)EP/M002527/1ENG - ENGINEERING ELECTRONICS & NANO ENG