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Notice of retraction
Vol. 34, No. 8(3), S&M3042

Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
is covered by Science Citation Index Expanded (Clarivate Analytics), Scopus (Elsevier), and other databases.

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Sensors and Materials, Volume 33, Number 8(3) (2021)
Copyright(C) MYU K.K.
pp. 2825-2833
S&M2658 Letter
https://doi.org/10.18494/SAM.2021.3372
Published: August 24, 2021

Wrist Dorsal Sensor Array for Finger Movement Recognition [PDF]

Yaohui Hu, Yadong Chen, Xiaobin Yi, Jiquan Zhong, Xing Wang, Zhiyong Yao, Yingzhao Hu, Tao Zhang, and Yong Fang

(Received April 22, 2021; Accepted July 7, 2021)

Keywords: PVDF sensor, wrist dorsal, human–computer interaction, wearable sensor, finger movement

Hu proposed a method that recognizes finger movements by detecting wrist muscles for human–computer interaction (HCI). Considering human habits and aesthetics, the sensor is placed on the back of the wrist. We first designed a polyvinylidene fluoride (PVDF) piezoelectric thin-film sensor unit with a planar elastic substrate. By studying the effects of the hardness and thickness of the substrate, we designed the sensor unit to have a Shore-A hardness of 23 and a thickness of 2 mm. Then we constructed a 4 × 2 sensor matrix with a size of 25 × 15 mm2. To build a finger movement dataset, we collected wrist dorsal movement signals when the fingers moved using the sensor matrix. Then we used a four-layer back-propagation (BP) neural network to recognize the finger movements. We experimentally demonstrated that even on the dorsal wrist side, finger movements could be recognized. The recognition rate of the general model using mixed personal data was 79%. In comparison, the recognition rate of the individual model using personal data was 94%.

Corresponding author: Yaohui Hu


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This work is licensed under a Creative Commons Attribution 4.0 International License.

Cite this article
Yaohui Hu, Yadong Chen, Xiaobin Yi, Jiquan Zhong, Xing Wang, Zhiyong Yao, Yingzhao Hu, Tao Zhang, and Yong Fang, Wrist Dorsal Sensor Array for Finger Movement Recognition, Sens. Mater., Vol. 33, No. 8, 2021, p. 2825-2833.



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