Flexible noncontact electrodes for comfortable monitoring of physiological signals

Liu, Shuting; Zhu, Mingxing; Liu, Xueyu; Samuel, Oluwarotimi Williams; Wang, Xin; Huang, Zhen; Wu, Wanqing; Chen, Shixiong; Li, Guanglin

doi:10.1002/acs.2993

Cited by 16 publications

(5 citation statements)

References 41 publications

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“…As the thickness of the insulating layer increases, the signal quality decreases. In theory, the further the electrode is from the source, the smaller the coupling signal ( Liu et al, 2019 ). In this experiment, we used two thicknesses of clothing for monitoring and both obtained an effective ECG signal, namely one layer and three layers.…”

Section: Discussionmentioning

confidence: 99%

“…In this study, a flexible non-contact electrode for WBS was proposed based on the principle of capacitive coupling for physiological signal acquisition. The electrode was built with flexible printed circuits (FPC) materials and could be bent to ensure better capacitive coupling with the skin ( Yi et al, 2018 ; Liu et al, 2019 ). Although the motion had a great influence, the proposed non-contact electrode could acquire high-quality ECG compared with the wet electrode.…”

Section: Introductionmentioning

confidence: 99%

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Flexible Non-contact Electrodes for Wearable Biosensors System on Electrocardiogram Monitoring in Motion

et al. 2022

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Electrocardiogram (ECG) is a critical physiological indicator that contains abundant information about human heart activities. However, it is a kind of weak low-frequency signal, which is easy to be interfered by various noises. Therefore, wearable biosensors (WBS) technique is introduced to overcome this challenge. A flexible non-contact electrode is proposed for wearable biosensors (WBS) system, which is made up of flexible printed circuits materials, and can monitor the ECG signals during exercise for a long time. It uses the principle of capacitive coupling to obtain high-quality signals, and reduces the impact of external noise through active shielding; The results showed that the proposed non-contact electrode was equivalent to a medical wet electrode. The correlation coefficient was as high as 99.70 ± 0.30% when the subject was resting, while it was as high as 97.53 ± 1.80% during exercise. High-quality ECG could still be collected at subjects walking at 7 km/h. This study suggested that the proposed flexible non-contact electrode would be a potential tool for wearable biosensors for medical application on long-term monitoring of patients’ health and provide athletes with physiological signal measurements.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexible Non-contact Electrodes for Wearable Biosensors System on Electrocardiogram Monitoring in Motion

et al. 2022

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“…Subsequently, a band-pass filter was used to mitigate motion noise, resulting in the electrode demonstrating exceptional performance. This was substantiated by the acquisition of high-fidelity EMG data during the flexion or extension of the brachial muscles (Liu et al , 2019).…”

Section: Classification Of Vital Signs In Wearable Sensingmentioning

confidence: 99%

Wearable sensors for monitoring vital signals in sports and health: progress and perspective

Zhao,

Feng,

Cao

et al. 2024

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Purpose This paper aims to concentrate on recent innovations in flexible wearable sensor technology tailored for monitoring vital signals within the contexts of wearable sensors and systems developed specifically for monitoring health and fitness metrics. Design/methodology/approach In recent decades, wearable sensors for monitoring vital signals in sports and health have advanced greatly. Vital signals include electrocardiogram, electroencephalogram, electromyography, inertial data, body motions, cardiac rate and bodily fluids like blood and sweating, making them a good choice for sensing devices. Findings This report reviewed reputable journal articles on wearable sensors for vital signal monitoring, focusing on multimode and integrated multi-dimensional capabilities like structure, accuracy and nature of the devices, which may offer a more versatile and comprehensive solution. Originality/value The paper provides essential information on the present obstacles and challenges in this domain and provide a glimpse into the future directions of wearable sensors for the detection of these crucial signals. Importantly, it is evident that the integration of modern fabricating techniques, stretchable electronic devices, the Internet of Things and the application of artificial intelligence algorithms has significantly improved the capacity to efficiently monitor and leverage these signals for human health monitoring, including disease prediction.

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“…The system can effectively distinguish between an open or closed hand as the electrodes were placed on the arm. Since then, they added a band-pass filter to filter motion noise and found that the electrode showed an excellent performance, which was evidenced by the high-quality EMG signals obtained during the opening or closing of the upper arm muscles [ 54 ].…”

Section: Bioelectrical Signalsmentioning

confidence: 99%

A Review of Recent Advances in Vital Signals Monitoring of Sports and Health via Flexible Wearable Sensors

Sun

Guo

Yang

et al. 2022

Sensors

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In recent years, vital signals monitoring in sports and health have been considered the research focus in the field of wearable sensing technologies. Typical signals include bioelectrical signals, biophysical signals, and biochemical signals, which have applications in the fields of athletic training, medical diagnosis and prevention, and rehabilitation. In particular, since the COVID-19 pandemic, there has been a dramatic increase in real-time interest in personal health. This has created an urgent need for flexible, wearable, portable, and real-time monitoring sensors to remotely monitor these signals in response to health management. To this end, the paper reviews recent advances in flexible wearable sensors for monitoring vital signals in sports and health. More precisely, emerging wearable devices and systems for health and exercise-related vital signals (e.g., ECG, EEG, EMG, inertia, body movements, heart rate, blood, sweat, and interstitial fluid) are reviewed first. Then, the paper creatively presents multidimensional and multimodal wearable sensors and systems. The paper also summarizes the current challenges and limitations and future directions of wearable sensors for vital typical signal detection. Through the review, the paper finds that these signals can be effectively monitored and used for health management (e.g., disease prediction) thanks to advanced manufacturing, flexible electronics, IoT, and artificial intelligence algorithms; however, wearable sensors and systems with multidimensional and multimodal are more compliant.

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Flexible noncontact electrodes for comfortable monitoring of physiological signals

Abstract: KEYWORDS capacitive coupling, flexible noncontact electrode, long-term healthcare monitoring, physiological signals, wearable devices Shuting Liu and Mingxing Zhu have equal contributions to the work.

Cited by 16 publications

References 41 publications

Flexible Non-contact Electrodes for Wearable Biosensors System on Electrocardiogram Monitoring in Motion

Flexible Non-contact Electrodes for Wearable Biosensors System on Electrocardiogram Monitoring in Motion

Wearable sensors for monitoring vital signals in sports and health: progress and perspective

A Review of Recent Advances in Vital Signals Monitoring of Sports and Health via Flexible Wearable Sensors

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