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Wearable Sensors and Signal Processing Technology for Digital Health Applications

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Biomedical Sensors".

Deadline for manuscript submissions: 30 June 2026 | Viewed by 2055

Special Issue Editors


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Guest Editor
Department of Computer Science and Information Engineering, Chaoyang University of Technology, Taichung 413310, Taiwan
Interests: cardiovascular measurement system; biomedical signal process; deep learning; machine learning; wearable device for digital health
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of AI Technology Development, M&D Data Science Center, Institute of Integrated Research, Institute of Science Tokyo, Tokyo, Japan
Interests: medical image and signal processing; cardiac modeling and simulation; medical instrumentation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the past decade, wearable devices that can be employed in digital health to measure physiological signals or parameters, such as in electrocardiograms, photoplethysmograms, blood pressure, and the saturation of peripheral oxygen, have been developed to monitor the physical or mental conditions of users in real time. However, these measurement environments are more complex than clinical practices. Moreover, users may be moving or active. Therefore, processing these signals remains challenging. Deep learning and machine learning have proven advantageous in speech processing, and ARM microprocessor cores have advanced significantly. This Special Issue focuses on the application of deep learning or machine learning to process the physiological signals measured by wearable devices and enhance their performance. Moreover, the proposed methods can be implemented on edge devices.

Prof. Dr. Shing-Hong Liu
Prof. Dr. Xin Zhu
Guest Editors

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Keywords

  • digital health
  • wearable device
  • physiological signal and parameter
  • deep learning
  • machine learning
  • edge computing

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Published Papers (2 papers)

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Research

23 pages, 2836 KB  
Article
Ergo4Workers: A User-Centred App for Tracking Posture and Workload in Healthcare Professionals
by Inês Sabino, Maria do Carmo Fernandes, Ana Antunes, António Monteny, Bruno Mendes, Carlos Caldeira, Isabel Guimarães, Nidia Grazina, Phillip Probst, Cátia Cepeda, Cláudia Quaresma, Hugo Gamboa, Isabel L. Nunes and Ana Teresa Gabriel
Sensors 2025, 25(18), 5854; https://doi.org/10.3390/s25185854 - 19 Sep 2025
Viewed by 474
Abstract
Healthcare professionals (namely, occupational therapists) face ergonomic risk factors that may lead to work-related musculoskeletal disorders (WRMSD). Ergonomic assessments are crucial to mitigate this occupational issue. Wearable devices are a potential solution for such assessments, providing continuous measurement of biomechanical and physiological parameters. [...] Read more.
Healthcare professionals (namely, occupational therapists) face ergonomic risk factors that may lead to work-related musculoskeletal disorders (WRMSD). Ergonomic assessments are crucial to mitigate this occupational issue. Wearable devices are a potential solution for such assessments, providing continuous measurement of biomechanical and physiological parameters. Ergo4workers (E4W) is a mobile application designed to integrate data from independent wearable sensors—motion capture system, surface electromyography, force platform, and smartwatch—to provide an overview of the posture and workload of occupational therapists. It can help identify poor work practices and raise awareness about ergonomic risk factors. This paper describes the development of E4W by following a User-Centred Design (UCD) approach. The initial stage focused on specifying the context of use in collaboration with six occupational therapists. Then the app was implemented using WordPress. Three iterations of the UCD cycle were performed. The usability test of prototype 1 was carried out in a laboratory environment, while the others were tested in a real healthcare work environment. The Cognitive Walkthrough was applied in the usability tests of prototypes 1 and 2. The System Usability Scale evaluated prototype 3. Results evidenced positive feedback, reflecting an easy-to-use and intuitive smartphone app that does not interfere with daily work activities. Full article
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20 pages, 1981 KB  
Article
Compact Colocated Bimodal EEG/fNIRS Multi-Distance Sensor
by Frédéric Hameau, Anne Planat-Chrétien, Sadok Gharbi, Robinson Prada-Mejia, Simon Thomas, Stéphane Bonnet and Angélique Rascle
Sensors 2025, 25(17), 5520; https://doi.org/10.3390/s25175520 - 4 Sep 2025
Viewed by 1254
Abstract
At present, it is a real challenge to measure brain signals outside of the lab with portable systems that are robust, comfortable and easy to use. We propose in this article a bimodal electroencephalography–functional near-infrared spectroscopy (EEG-fNIRS) sensor whose spatial geometry allows the [...] Read more.
At present, it is a real challenge to measure brain signals outside of the lab with portable systems that are robust, comfortable and easy to use. We propose in this article a bimodal electroencephalography–functional near-infrared spectroscopy (EEG-fNIRS) sensor whose spatial geometry allows the robust estimation of colocated electrical and hemodynamic brain activity. The geometry allows for the correction of extra-cerebral activity (short-channel distance) as well as the computation of the spatial gradient of absorbance required in the spatially resolved spectroscopy (SRS) method. The complete system is described, detailing the technical solutions implemented to provide signals at 250 Hz for both synchronized modalities and without crosstalk. The system performances are validated during an N-Back mental workload protocol. Full article
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