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A position-sensitive electronic skin based on boundary potential projection theory

Youzhi Zhang (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China)
Zhengkang Lin (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China)
Xiaojun You (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China)
Xingping Huang (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China)
Jinhua Ye (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China)
Haibin Wu (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China)

Sensor Review

ISSN: 0260-2288

Article publication date: 3 February 2020

Issue publication date: 6 March 2020

Abstract

Purpose

This paper aims to report a flexible position-sensitive sensor that can be applied as large-area electronic skin over the stiff media.

Design/methodology/approach

The sensor uses a whole piezoresistive film as a touch sensing area. By alternately constructing two uniform electric fields with orthogonal directions in the piezoresistive film, the local changes in conductivity caused by touch can be projected to the boundary along the equipotential line under the constraint of electric field. Based on the change of boundary potential in the two uniform electric fields, it can be easy to determine the position of the contact area in the piezoresistive film.

Findings

Experiment results show the proposed tactile sensor is capable of detecting the contact position and classifying the contact force in real-time based on the changes of the potential differences on the boundary of the sensor.

Practical implications

The application example of using the sensor sample as a controller in shooting game is presented in this paper. It shows that the sensor has excellent touch sensing performance.

Originality/value

In this paper, a position-sensitive electronic skin is proposed. The experiment results show that the sensor has great application prospects in the field of interactive tactile sensing.

Keywords

Acknowledgements

This study was supported by the National Key Research and Development Project (No. 2018YFB1308603) and the National Natural Science Foundation of China (Nos. 51175084, 51575111 and 51605093).

Citation

Zhang, Y., Lin, Z., You, X., Huang, X., Ye, J. and Wu, H. (2020), "A position-sensitive electronic skin based on boundary potential projection theory", Sensor Review, Vol. 40 No. 1, pp. 130-140. https://doi.org/10.1108/SR-10-2019-0243

Publisher

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Emerald Publishing Limited

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