Flexible electrical impedance tomography for tactile interfaces

Flexible electrical impedance tomography (EIT) is an emerging technology for tactile sensing in human-machine interfaces (HMI). It offers a unique alternative to traditional array-based tactile sensors with its flexible, scalable, and cost-effective one-piece design. This paper proposes a lattice-pa...

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Bibliographic Details
Published in:arXiv.org 2024-11
Main Authors: Dong, Huazhi, Teng, Sihao, Wu, Xiaopeng, Xu, Han, Giorgio-Serchi, Francesco, Yang, Yunjie
Format: Article
Language:English
Subjects:
Design parameters
Electrical impedance
Lattice design
Man-machine interfaces
Parameter sensitivity
Real time
Sensor arrays
Tactile sensors (robotics)
Thickness
Tomography
Online Access:Get full text
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Summary:Flexible electrical impedance tomography (EIT) is an emerging technology for tactile sensing in human-machine interfaces (HMI). It offers a unique alternative to traditional array-based tactile sensors with its flexible, scalable, and cost-effective one-piece design. This paper proposes a lattice-patterned flexible EIT tactile sensor with a hydrogel-based conductive layer, designed for enhanced sensitivity while maintaining durability. We conducted simulation studies to explore the influence of lattice width and conductive layer thickness on sensor performance, establishing optimized sensor design parameters for enhanced functionality. Experimental evaluations demonstrate the sensor's capacity to detect diverse tactile patterns with a high accuracy. The practical utility of the sensor is demonstrated through its integration within an HMI setup to control a virtual game, showcasing its potential for dynamic, multi-functional tactile interactions in real-time applications. This study reinforces the potential of EIT-based flexible tactile sensors, establishing a foundation for future advancements in wearable, adaptable HMI technologies.
ISSN:2331-8422