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Human finger inspired grasping structure using tactile sensing array with single type optoelectronic sensor

Research output: Chapter in Book/Report/Conference proceedingConference paper

Creamy Lam, Yohan Noh, Matthew Howard, Shan Luo, Sangjin Han, Kawal Rhode

Original languageEnglish
Title of host publicationIEEE SENSORS 2017 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)9781509010127
Publication statusPublished - 21 Dec 2017
Event16th IEEE SENSORS Conference, ICSENS 2017 - Glasgow, United Kingdom
Duration: 30 Oct 20171 Nov 2017


Conference16th IEEE SENSORS Conference, ICSENS 2017
CountryUnited Kingdom

King's Authors


In this paper, we address how to utilise one type of sensor in a tactile sensing array, such as a robot fingertip that grasps and manipulates objects. The tactile sensing array measures contact force by using optoelectronic sensors and has two types of sensor mechanical flexures, each with a different stiffness and contact force resolutions. The sensing principle is to measure deformations in the form of distance between the flexure structure and the sensing element using light intensity in two different sensing ranges of the optoelectronic sensor, hence estimate the force components. This sensing principle and novel flexure structure recognises contact and allows the robot fingertips to stably grasp an object, thus mimicking the action of grasping by human fingers. This low cost bespoke design has a high sensing resolution, low noise and a robust structure. Its simple fabrication and miniaturisation makes it adaptable to any type of shape within a mechanical structure. We present a preliminary study including the design and experiments for sensing performance and the characteristic curve of an optoelectronic sensor on the tactile sensing array.

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