Electrode Characteristics of Non-contact Electrocardiographic Measurement

Kim, Sŭng-il; Park, Jaesoon; Joung, Yeun-Ho; Choi, Won Seok

doi:10.4313/teem.2015.16.1.42

Cited by 5 publications

(4 citation statements)

References 7 publications

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“…As the layers of the insulation materials increase, the distance between the electrode and the skin increase, which finally causes the decrease of the effective capacitance and therefore leads to the deterioration of the ECG quality. This result was consistent with the existing research that had been reported ( Chi et al, 2009 ; Mathias et al, 2015 ; Wang et al, 2019 ). And in our study, for three layers of the insulating material, the ECG signals still had recognizable ECG characteristics, which could be used for further analysis.…”

Section: Discussionsupporting

confidence: 94%

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: Discussionsupporting

confidence: 94%

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

et al. 2022

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“…In particular, as the elderly population gradually increases in more and more countries, home health care management for these elderly people has attracted increasing attention. With the continuing advances in device miniaturization and wireless technologies, wearable on-body ECG devices for long-term use that have been devised to capture and monitor the electrical activity of the heart may help to establish diagnoses in patients, and considerable progress has been made in this field [4,5,6,7]. However, despite advancements in wireless technology and electronics miniaturization, the development of daily ECG monitoring equipment is still limited by the inconvenience of and patient discomfort caused by wet adhesive electrodes [8], which has led to new requirements for high-performance ECG electrodes with biological compatibility.…”

Section: Introductionmentioning

confidence: 99%

Flexible Graphene Electrodes for Prolonged Dynamic ECG Monitoring

Lou

et al. 2016

Sensors

112

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This paper describes the development of a graphene-based dry flexible electrocardiography (ECG) electrode and a portable wireless ECG measurement system. First, graphene films on polyethylene terephthalate (PET) substrates and graphene paper were used to construct the ECG electrode. Then, a graphene textile was synthesized for the fabrication of a wearable ECG monitoring system. The structure and the electrical properties of the graphene electrodes were evaluated using Raman spectroscopy, scanning electron microscopy (SEM), and alternating current impedance spectroscopy. ECG signals were then collected from healthy subjects using the developed graphene electrode and portable measurement system. The results show that the graphene electrode was able to acquire the typical characteristics and features of human ECG signals with a high signal-to-noise (SNR) ratio in different states of motion. A week-long continuous wearability test showed no degradation in the ECG signal quality over time. The graphene-based flexible electrode demonstrates comfortability, good biocompatibility, and high electrophysiological detection sensitivity. The graphene electrode also combines the potential for use in long-term wearable dynamic cardiac activity monitoring systems with convenience and comfort for use in home health care of elderly and high-risk adults.

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“…Surface electrodes that can acquire electrophysiological (EP) signals have many applications ranging from diagnosing neuromuscular disorders [1,2], artificial muscle [3,4], to stimulation of hand rehabilitation [5]. The conventional electrodes are fixed on the body surface by caps, belts, or tapes [6], which lead to inconvenient life of the people as their relatively thick and rigid nature, limited options in mounting locations, and discomfort in long-term usage on the soft, curved, and dynamic human body [7]. The ideal surface electrode is desired to have excellent mechanical adaptability (stretchability > 30%, and conformability with skin wrinkles) and keep electrical stability in recording EP signals during body motion.…”

Section: Introductionmentioning

confidence: 99%

“…The feasible range of geometric parameters for the stretchability and conformability of the network-shaped electrode: the effects of (a) line width w, (b) height-space ratio η, and (c) scale ratio β 6. Complexity…”

mentioning

confidence: 99%

Electromechanical Design of Self‐Similar Inspired Surface Electrodes for Human‐Machine Interaction

et al. 2018

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Stable acquisition of electromyography (EMG)/electrocardiograph (ECG) signal is critical and challenging in dynamic human-machine interaction. Here, self-similar inspired configuration is presented to design surface electrodes with high mechanical adaptability (stretchability and conformability with skin) and electrical sensitivity/stability which are usually a pair of paradoxes. Mechanical and electrical coupling optimization strategies are proposed to optimize the surface electrodes with the 2nd-order self-similar serpentine configuration. It is devoted the relationship between the geometric shape parameters (height-space ratio η, scale factor β, and line width w), the areal coverage α, and mechanical adaptability, based on which an open network-shaped electrode is designed to stably collect high signal-to-noise ratio signals. The theoretical and experimental results show that the electrodes can be stretched > 30% and conform with skin wrinkle. The interfacial strength of electrode and skin is measured by homemade peeling test experiment platform. The surface electrodes with different line widths are used to record ECG signals for validating the electrical stability. Conformability reduces background noises and motion artifacts which provides stable recording of ECG/EMG signals. Further, the thin, stretchable electrodes are mounted on the human epidermis for continuous, stable biopotential signal records which suggests the way to high-performance electrodes in human-machine interaction.

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Electrode Characteristics of Non-contact Electrocardiographic Measurement

Cited by 5 publications

References 7 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

Flexible Graphene Electrodes for Prolonged Dynamic ECG Monitoring

Electromechanical Design of Self‐Similar Inspired Surface Electrodes for Human‐Machine Interaction

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