Application of Garment—Embedded Textile Electrodes for EIT Based Respiratory Monitoring

2018 ◽  
pp. 927-930
Author(s):  
Alexei Katashev ◽  
Alexander Okss ◽  
Sabine Krüger-Ziolek ◽  
Benjamin Schullcke ◽  
Knut Möller
Keyword(s):  
Respiratory Monitoring ◽  
Textile Electrodes

Development of Non-contact Respiratory Monitoring System for Newborn Using a FG Vision Sensor

2010 ◽  
Vol 130 (9) ◽  
pp. 1581-1587 ◽  
Author(s):  
Yoshiyuki Kurami ◽  
Yushi Itoh ◽  
Michiya Natori ◽  
Kazuo Ohzeki ◽  
Yoshimitsu Aoki
Keyword(s):  
Monitoring System ◽  
Respiratory Monitoring ◽  
Vision Sensor

Electrodermal Responses Through Textile Electrodes

2010 ◽  
Vol 14 (4) ◽  
pp. 81-88 ◽  
Author(s):  
Antonio Lanatà ◽  
Gaetano Valenza ◽  
E.Pasquale Scilingo
Keyword(s):  
Textile Electrodes ◽  
Electrodermal Responses

Respiratory monitoring with a new impedance plethysmograph

Anaesthesia ◽  
1986 ◽  
Vol 41 (11) ◽  
pp. 1139-1142 ◽  
Author(s):  
S. Hoffman ◽  
R. Jedeikin ◽  
D. Atlas
Keyword(s):  
Respiratory Monitoring ◽  
Impedance Plethysmograph

scholarly journals Textile Electrodes: Influence of Knitting Construction and Pressure on the Contact Impedance

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1578
Author(s):  
Luisa Euler ◽  
Li Guo ◽  
Nils-Krister Persson
Keyword(s):  
Smooth Surface ◽  
Research Field ◽  
Uneven Surface ◽  
Contact Impedance ◽  
Dry Electrodes ◽  
Textile Electrodes ◽  
Human Forearm ◽  
Wet Condition ◽  
Electrode Contact ◽  
Influencing Parameters

Textile electrodes, also called textrodes, for biosignal monitoring as well as electrostimulation are central for the emerging research field of smart textiles. However, so far, only the general suitability of textrodes for those areas was investigated, while the influencing parameters on the contact impedance related to the electrode construction and external factors remain rather unknown. Therefore, in this work, six different knitted electrodes, applied both wet and dry, were compared regarding the influence of specific knitting construction parameters on the three-electrode contact impedance measured on a human forearm. Additionally, the influence of applying pressure was investigated in a two-electrode setup using a water-based agar dummy. Further, simulation of an equivalent circuit was used for quantitative evaluation. Indications were found that the preferred electrode construction to achieve the lowest contact impedance includes a square shaped electrode, knitted with a high yarn density and, in the case of dry electrodes, an uneven surface topography consisting of loops, while in wet condition a smooth surface is favorable. Wet electrodes are showing a greatly reduced contact impedance and are therefore to be preferred over dry ones; however, opportunities are seen for improving the electrode performance of dry electrodes by applying pressure to the system, thereby avoiding disadvantages of wet electrodes with fluid administration, drying-out of the electrolyte, and discomfort arising from a “wet feeling”.

scholarly journals Dedicated Algorithm for Unobtrusive Fetal Heart Rate Monitoring Using Multiple Dry Electrodes

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4298
Author(s):  
Alessandra Galli ◽  
Elisabetta Peri ◽  
Yijing Zhang ◽  
Rik Vullings ◽  
Myrthe van der Ven ◽  
...  
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Processing System ◽  
Motion Artifacts ◽  
Accurate Estimation ◽  
Fetal Heart Rate Monitoring ◽  
Dry Electrodes ◽  
Textile Electrodes ◽  
Dry Electrode

Multi-channel measurements from the maternal abdomen acquired by means of dry electrodes can be employed to promote long-term monitoring of fetal heart rate (fHR). The signals acquired with this type of electrode have a lower signal-to-noise ratio and different artifacts compared to signals acquired with conventional wet electrodes. Therefore, starting from the benchmark algorithm with the best performance for fHR estimation proposed by Varanini et al., we propose a new method specifically designed to remove artifacts typical of dry-electrode recordings. To test the algorithm, experimental textile electrodes were employed that produce artifacts typical of dry and capacitive electrodes. The proposed solution is based on a hybrid (hardware and software) pre-processing step designed specifically to remove the disturbing component typical of signals acquired with these electrodes (triboelectricity artifacts and amplitude modulations). The following main processing steps consist of the removal of the maternal ECG by blind source separation, the enhancement of the fetal ECG and identification of the fetal QRS complexes. Main processing is designed to be robust to the high-amplitude motion artifacts that corrupt the acquisition. The obtained denoising system was compared with the benchmark algorithm both on semi-simulated and on real data. The performance, quantified by means of sensitivity, F1-score and root-mean-square error metrics, outperforms the performance obtained with the original method available in the literature. This result proves that the design of a dedicated processing system based on the signal characteristics is necessary for reliable and accurate estimation of the fHR using dry, textile electrodes.

scholarly journals Infant home respiratory monitoring using pulse oximetry

2016 ◽  
Vol 103 (6) ◽  
pp. 603-605 ◽  
Author(s):  
Paul Seddon ◽  
Sonia Sobowiec-Kouman ◽  
David Wertheim
Keyword(s):  
Pulse Oximetry ◽  
Respiratory Rate ◽  
Preterm Infants ◽  
Pulse Oximeter ◽  
Respiratory Monitoring ◽  
Monitoring Methods ◽  
Term Neonates ◽  
Respiratory Inductive Plethysmography ◽  
Current Monitoring ◽  
Inductive Plethysmography

Respiratory rate (RR) is a valuable early marker of illness in vulnerable infants, but current monitoring methods are unsuitable for sustained home use. We have demonstrated accurate measurement of RR from brief recordings of pulse oximeter plethysmogram (pleth) trace in full-term neonates in hospital. This study assessed the feasibility of this method in preterm infants during overnight recordings in the home. We collected simultaneous overnight SpO2, pleth and respiratory inductive plethysmography (RIP) on 24 preterm infants in the home. RR from pleth analysis was compared with RR from RIP bands; pleth quality was assessed by the presence of visible artefact. Median (range) RR from RIP and pleth were not significantly different at 42 (25–65) and 42 (25–64) breaths/min. Median (range) % of epochs rejected due to artefact was 20 (8–75) for pleth and 10 (3–53) for RIP. Our results suggest that home RR monitoring by pulse oximeter pleth signal is accurate and feasible.

A PCA-based method to select the number and the body location of piezoresistive sensors in a wearable system for respiratory monitoring

2020 ◽  
pp. 1-1
Author(s):  
Luigi Raiano ◽  
Joshua Di Tocco ◽  
Carlo Massaroni ◽  
Giovanni Di Pino ◽  
Emiliano Schena ◽  
...  
Keyword(s):  
The Body ◽  
Respiratory Monitoring ◽  
Wearable System ◽  
Piezoresistive Sensors ◽  
Body Location

Gauging performance of biosynthesized silver nanoparticles loaded polypropylene nonwoven based textile electrodes for 3-lead health monitoring electro cardiogram on analogous system

2021 ◽  
pp. 152808372110256
Author(s):  
Tasnim N Shaikh ◽  
SB Chaudhari ◽  
BH Patel ◽  
Megha Patel
Keyword(s):  
Silver Nanoparticles ◽  
Health Monitoring ◽  
Nonwoven Fabric ◽  
Motion Artifacts ◽  
Ocimum Sanctum ◽  
Testing Time ◽  
Electrode Impedance ◽  
Air Voids ◽  
Textile Electrodes ◽  
Analogous System

This work reports the engineering of textile electrodes, considered safe for humans even if worn next to skin for a longer time. Obliging this phenomenon conductive Silver nanoparticles (AgNPs) were biosynthesized from Silver Sulphate (Ag2SO4) and medicinal values enriched Ocimum Sanctum (Tulsi)leaves extract. These conductive Silver nanoparticles were loaded by spray technique on polypropylene nonwoven fabric having inbuilt antifungal characteristics, to reduce its resistivity (10Ω) for the fabrication of textile electrodes. The adequate skin-electrode impedance values were observed for the fabricated textile electrodes, viz; 1.44 MΩ–1.83 MΩ and 1.01 MΩ–1.18 MΩ, in the dry and wet state respectively. The 3-lead health monitoring electrocardiograms (ECG) were obtained on the Analogous system with the textile electrodes; dry and wet state as well as gel electrodes. The cardiograms were also taken at a smaller triangle than usual, only for the high resistance textile electrodes. The wet electrodes have executed considerably better clarity of PQR wavelets than reference gel electrodes ECG plots, and their performance was found consistent when tested after six months’ time leap. However, higher motion artifacts caused in the case of dry electrodes have resulted in distorted PQR wavelets and the tracing became worsen with increased testing time leap. This was mainly due to the encapsulation of conductive AgNPs in the air voids of the fabric, increased resistivity. The cardiogram quality has not shown peculiar benefit for a higher heart pumping pressure at the smaller triangle in either of the cases.

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