American Journal of Applied Sciences

Fabrication of a Capacitance-Based Tactile Sensor with Biomedical Applications

Ali Tavakoli Golpaygani, Siamak Najarian, M. Mehdi Movahedi and Goldis Darb Emamieh

DOI : 10.3844/ajassp.2008.129.135

American Journal of Applied Sciences

Volume 5, Issue 2

Pages 129-135

Abstract

The design, modeling, and testing of a flexible tactile sensor and its applications are presented. This sensor is made of polymer materials and can detect the 2D surface texture image and contact-force estimation. The sensing mechanism is based on the novel contact deflection effect of a membrane. We measure the amount of membrane deflection with measuring the change of capacitance between two plates. One plate is attached to membrane and the other fixed on the substrate of sensor. An electronic interface circuit is used to convert the capacitance variety to frequency variety. Furthermore, the size and shape of the sensor can be easily tailored to the applications requirements. The proposed sensor with the potential for further miniaturization is suitable for using in biomedical applications, especially in minimally invasive surgery (MIS).

Copyright

© 2008 Ali Tavakoli Golpaygani, Siamak Najarian, M. Mehdi Movahedi and Goldis Darb Emamieh. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.