A new system for the measurement of gripping force based on scattering

Abstract

<p style="margin: 0cm 0cm 0pt;"><span lang="EN-US"><span style="font-family: Calibri; font-size: small;">The measurement of contact pressure of human fingers is very important to understand human perceptual mechanisms, that is the main goal of most of the neuroscientific studies. It may also lead to a correct development of tactile devices and haptic systems, as they are intended to convey controllable and effective stimuli.</span></span></p><span style="font-family: 'Garamond','serif'; font-size: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-GB; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN-GB">In this work, an optical measurement system based on Frustrated Total Internal Reflection (FTIR) is proposed for the measurement of the pressure distribution on the contact area between a human finger and a flat surface. The feasibility study performed shows that the tested sensor can be effectively used for the measurement of the fingertip contact pressure both on static and dynamic conditions.</span>

On the Design of Force Sensors Based on Frustrated Total Internal Reflection

“…As a consequence, the only uncertain term of (21) becomes E . As can be seen in (9), E depends on both Young's modulus and Poisson's ratio of the polymer strip. Consequently, the final uncertainty of measurement has been evaluated using a Monte Carlo simulation.…”

“…Therefore, proceeding with the calculation, owing to (9), it is possible to compute the effective contact area A In addition, the total load acting on the contact patch P…”