4.6 Article

A Flexible Bidirectional Interface with Integrated Multimodal Sensing and Haptic Feedback for Closed-Loop Human-Machine Interaction

Journal

ADVANCED INTELLIGENT SYSTEMS
Volume -, Issue -, Pages -

Publisher

WILEY
DOI: 10.1002/aisy.202300291

Keywords

bidirectional interfaces; closed-loop human-machine interaction systems; flexible wearable interfaces; haptic feedback; multimodal sensing

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Human-machine interaction plays a significant role in industry and medical fields. However, conventional interfaces lack feedback information and flexibility, limiting their application scenarios. This study proposes a flexible bidirectional interface with integrated multimodal sensing and haptic feedback, which can accurately perceive various human movements.
Human-machine interaction (HMI) establishes an interconnected bridge between humans and robots and plays a significant role in industry and medical fields. However, the conventional interface is bulky and rigid with a single function. It lacks feedback information to be provided to the user, limiting its application scenarios and the ability to complete complex tasks in a dynamic environment. Herein, a flexible bidirectional (FBD) interface with integrated multimodal sensing and haptic feedback and the development of an FBD-based closed-loop HMI platform are presented. The proposed FBD interface offers programmable haptic feedback through a coin vibration motor array to endow the user with better performance in missions. The multimodal sensing array can perceive signals of joint movement and the pressure imposed on the skin. In addition, the FBD interface exhibits significant advantages of flexibility and a compact structure. The experimental tests verify that the multimodal sensing module can accurately perceive various static and dynamic movements of a human. Furthermore, the actuation module can provide diverse haptic vibrations to convey different information to the user. Moreover, successful applications in the scenarios of bilateral robotic teleoperation and assistance of disabled people indicate great potential of the FBD interface for broad applications. A flexible electronic skin-based closed-loop human-machine interface with bidirectional sensing and haptic feedback functions is proposed. The strain sensing, pressure sensing, and vibration feedback functions are integrated into one device through structural design without mutual interference. Human movement monitoring and diverse haptic vibration combinations are achieved for various wearable scenarios, demonstrating the applicability of the developed system.image & COPY; 2023 WILEY-VCH GmbH

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