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A large-area flexible tactile sensor for multi-touch and force detection using electrical impedance tomography

preprint
posted on 22.12.2021, 04:55 by Xiaojie WangXiaojie Wang, Haofeng Chen, Gang Ma, xuanxuan yang, jialu geng
In this paper, a large-area flexible tactile sensor for multi-touch and force detection based on EIT technology was developed. A novel design of a sensor material made of a porous elastic polymer and ionic liquid was proposed. The proposed conductive flexible materials combining elastic porous structures and conductive liquids provide continuous, linear changes in impedance with respect to touch forces. A deep learning scheme PSPNet based on MobileNet was adopted to postprocess the originally reconstructed images to improve the performance of tactile perception. By using this data-driven method, we can improve the spatial resolution of the tactile sensor to achieve a single-point position detection error of 7.5±4.5 mm without using internal electrodes.

History

Email Address of Submitting Author

xjwang@iamt.ac.cn

ORCID of Submitting Author

0000-0002-4740-7882

Submitting Author's Institution

Chinese Academy of Science

Submitting Author's Country

China