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Electronics 2018, 7(9), 192; https://doi.org/10.3390/electronics7090192

Human Limb Motion Detection with Novel Flexible Capacitive Angle Sensor Based on Conductive Textile

1
State Key Laboratory of Bioelectronics, Jiangsu Key Lab of Remote Measurement and Control, School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China
2
State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
3
Harveston Asset Management, Singapore 069542, Singapore
*
Author to whom correspondence should be addressed.
Received: 2 August 2018 / Revised: 6 September 2018 / Accepted: 9 September 2018 / Published: 11 September 2018
(This article belongs to the Special Issue Flexible/Stretchable Electronics)
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Abstract

In recent years, many sensors made of hard materials have been designed to detect human body movements in physical exercises. However, hard materials usually cause extra dyskinesia for body movements. To detect human limb motion with less dyskinesia in physical exercise, a novel flexible capacitive angle sensor (NFCAS) based on a conductive textile was designed in this paper. The NFCAS has two non-parallel plates, namely, an exciting plate and a sensing plate, which can be fixed onto the inner forearm and the inner upper arm. Thus, the angle between the two plates of the NFCAS can be used to represent the angle of medial elbow, and its variation can lead to changes in the sensor’s capacitance at the same time. A push-ups experiment and pull-ups experiment were conducted to evaluate the designed NFCAS’s performance. Experimental results showed that the NFCAS could detect the main processes of push-ups and pull-ups. Besides high measurement precision, the NFCAS is also soft, thin, lightweight, and easily made. Therefore, it can be widely applied for detecting human limb motion with less dyskinesia in physical exercises. View Full-Text
Keywords: motion detection; flexible capacitive angle sensor; conductive textile motion detection; flexible capacitive angle sensor; conductive textile
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wu, J.-F.; Qiu, C.; Wang, Y.; Zhao, R.; Cai, Z.-P.; Zhao, X.-G.; He, S.-S.; Wang, F.; Wang, Q.; Li, J.-Q. Human Limb Motion Detection with Novel Flexible Capacitive Angle Sensor Based on Conductive Textile. Electronics 2018, 7, 192.

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