Multichannel ECG recording from waist using textile sensors

Abstract Background The development of wearable health monitoring systems is garnering tremendous interest in research, technology and commercial applications. Their ability of providing unique capabilities in continuous, real-time, and non-invasive tracking of the physiological markers of users can...

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Main Authors: Milad Alizadeh Meghrazi, Yupeng Tian, Amin Mahnam, Presish Bhattachan, Ladan Eskandarian, Sara Taghizadeh Kakhki, Milos R. Popovic, Milad Lankarany
Format: Article
Language:English
Published: BMC 2020-06-01
Series:BioMedical Engineering OnLine
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12938-020-00788-x
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author Milad Alizadeh Meghrazi
Yupeng Tian
Amin Mahnam
Presish Bhattachan
Ladan Eskandarian
Sara Taghizadeh Kakhki
Milos R. Popovic
Milad Lankarany
author_facet Milad Alizadeh Meghrazi
Yupeng Tian
Amin Mahnam
Presish Bhattachan
Ladan Eskandarian
Sara Taghizadeh Kakhki
Milos R. Popovic
Milad Lankarany
author_sort Milad Alizadeh Meghrazi
collection DOAJ
description Abstract Background The development of wearable health monitoring systems is garnering tremendous interest in research, technology and commercial applications. Their ability of providing unique capabilities in continuous, real-time, and non-invasive tracking of the physiological markers of users can provide insights into the performance and health of individuals. Electrocardiogram (ECG) signals are of particular interest, as cardiovascular disease is the leading cause of death globally. Monitoring heart health and its conditions such as ventricular disturbances and arrhythmias can be achieved through evaluating various features of ECG such as R-peaks, QRS complex, T-wave, and P-wave. Despite recent advances in biosensors for wearable applications, most of the currently available solutions rely solely on a single system attached to the body, limiting the ability to obtain reliable and multi-location biosignals. However, in engineering systems, sensor fusion, which is the optimal integration and processing of data from multiple sensors, has been a common theme and should be considered for wearables. In recent years, due to an increase in the availability and variety of different types of sensors, the possibility of achieving sensor fusion in wearable systems has become more attainable. Sensor fusion in multi-sensing systems results in significant enhancements of information inferences compared to those from systems with a sole sensor. One step towards the development of sensor fusion for wearable health monitoring systems is the accessibility to multiple reliable electrophysiological signals, which can be recorded continuously. Results In this paper, we develop a textile-based multichannel ECG band that has the ability to measure ECG from multiple locations on the waist. As a proof of concept, we demonstrate that ECG signals can be reliably obtained from different locations on the waist where the shape of the QRS complex is nearly comparable with recordings from the chest using traditional gel electrodes. In addition, we develop a probabilistic approach—based on prediction and update strategies—to detect R-peaks from noisy textile data in different statuses, including sitting, standing, and jogging. In this approach, an optimal search method is utilized to detect R-peaks based on the history of the intervals between previously detected R-peaks. We show that the performance of our probabilistic approach in R-peak detection is significantly better than that based on Pan–Tompkins and optimal-threshold methods. Conclusion A textile-based multichannel ECG band was developed to track the heart rate changes from multiple locations on the waist. We demonstrated that (i) the ECG signal can be detected from different locations on the waist, and (ii) the accuracy of the detected R-peaks from textile sensors was improved by using our proposed probabilistic approach. Despite the limitations of the textile sensors that might compromise the quality of ECG signals, we anticipate that the textile-based multichannel ECG band can be considered as an effective wearable system to facilitate the development of sensor fusion methodology for pervasive and non-invasive health monitoring through continuous tracking of heart rate variability (HRV) from the waist. In addition, from the commercialization point of view, we anticipate that the developed band has the potential to be integrated into garments such as underwear, bras or pants so that individuals can use it on a daily basis.
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spelling doaj.art-9e4909e5ba4f477ba0bd6db2a21433a92022-12-22T01:45:19ZengBMCBioMedical Engineering OnLine1475-925X2020-06-0119111810.1186/s12938-020-00788-xMultichannel ECG recording from waist using textile sensorsMilad Alizadeh Meghrazi0Yupeng Tian1Amin Mahnam2Presish Bhattachan3Ladan Eskandarian4Sara Taghizadeh Kakhki5Milos R. Popovic6Milad Lankarany7Institute of Biomaterials & Biomedical Engineering (IBBME), University of TorontoClinical and Computational Neuroscience, Krembil Research Institute, University Health NetworkMyant IncDepartment of Systems Design Engineering, University of WaterlooDepartment of Materials Science& Engineering, University of TorontoClinical and Computational Neuroscience, Krembil Research Institute, University Health NetworkInstitute of Biomaterials & Biomedical Engineering (IBBME), University of TorontoClinical and Computational Neuroscience, Krembil Research Institute, University Health NetworkAbstract Background The development of wearable health monitoring systems is garnering tremendous interest in research, technology and commercial applications. Their ability of providing unique capabilities in continuous, real-time, and non-invasive tracking of the physiological markers of users can provide insights into the performance and health of individuals. Electrocardiogram (ECG) signals are of particular interest, as cardiovascular disease is the leading cause of death globally. Monitoring heart health and its conditions such as ventricular disturbances and arrhythmias can be achieved through evaluating various features of ECG such as R-peaks, QRS complex, T-wave, and P-wave. Despite recent advances in biosensors for wearable applications, most of the currently available solutions rely solely on a single system attached to the body, limiting the ability to obtain reliable and multi-location biosignals. However, in engineering systems, sensor fusion, which is the optimal integration and processing of data from multiple sensors, has been a common theme and should be considered for wearables. In recent years, due to an increase in the availability and variety of different types of sensors, the possibility of achieving sensor fusion in wearable systems has become more attainable. Sensor fusion in multi-sensing systems results in significant enhancements of information inferences compared to those from systems with a sole sensor. One step towards the development of sensor fusion for wearable health monitoring systems is the accessibility to multiple reliable electrophysiological signals, which can be recorded continuously. Results In this paper, we develop a textile-based multichannel ECG band that has the ability to measure ECG from multiple locations on the waist. As a proof of concept, we demonstrate that ECG signals can be reliably obtained from different locations on the waist where the shape of the QRS complex is nearly comparable with recordings from the chest using traditional gel electrodes. In addition, we develop a probabilistic approach—based on prediction and update strategies—to detect R-peaks from noisy textile data in different statuses, including sitting, standing, and jogging. In this approach, an optimal search method is utilized to detect R-peaks based on the history of the intervals between previously detected R-peaks. We show that the performance of our probabilistic approach in R-peak detection is significantly better than that based on Pan–Tompkins and optimal-threshold methods. Conclusion A textile-based multichannel ECG band was developed to track the heart rate changes from multiple locations on the waist. We demonstrated that (i) the ECG signal can be detected from different locations on the waist, and (ii) the accuracy of the detected R-peaks from textile sensors was improved by using our proposed probabilistic approach. Despite the limitations of the textile sensors that might compromise the quality of ECG signals, we anticipate that the textile-based multichannel ECG band can be considered as an effective wearable system to facilitate the development of sensor fusion methodology for pervasive and non-invasive health monitoring through continuous tracking of heart rate variability (HRV) from the waist. In addition, from the commercialization point of view, we anticipate that the developed band has the potential to be integrated into garments such as underwear, bras or pants so that individuals can use it on a daily basis.http://link.springer.com/article/10.1186/s12938-020-00788-xWearable electronicsSensor fusionTextile sensorsMultichannel ECGR-peak detectionProbabilistic algorithm
spellingShingle Milad Alizadeh Meghrazi
Yupeng Tian
Amin Mahnam
Presish Bhattachan
Ladan Eskandarian
Sara Taghizadeh Kakhki
Milos R. Popovic
Milad Lankarany
Multichannel ECG recording from waist using textile sensors
BioMedical Engineering OnLine
Wearable electronics
Sensor fusion
Textile sensors
Multichannel ECG
R-peak detection
Probabilistic algorithm
title Multichannel ECG recording from waist using textile sensors
title_full Multichannel ECG recording from waist using textile sensors
title_fullStr Multichannel ECG recording from waist using textile sensors
title_full_unstemmed Multichannel ECG recording from waist using textile sensors
title_short Multichannel ECG recording from waist using textile sensors
title_sort multichannel ecg recording from waist using textile sensors
topic Wearable electronics
Sensor fusion
Textile sensors
Multichannel ECG
R-peak detection
Probabilistic algorithm
url http://link.springer.com/article/10.1186/s12938-020-00788-x
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