A Portable Multi-Modal Cushion for Continuous Monitoring of a Driver’s Vital Signs

With higher levels of automation in vehicles, the need for robust driver monitoring systems increases, since it must be ensured that the driver can intervene at any moment. Drowsiness, stress and alcohol are still the main sources of driver distraction. However, physiological problems such as heart...

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Main Authors: Onno Linschmann, Durmus Umutcan Uguz, Bianca Romanski, Immo Baarlink, Pujitha Gunaratne, Steffen Leonhardt, Marian Walter, Markus Lueken
Format: Article
Language:English
Published: MDPI AG 2023-04-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/23/8/4002
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author Onno Linschmann
Durmus Umutcan Uguz
Bianca Romanski
Immo Baarlink
Pujitha Gunaratne
Steffen Leonhardt
Marian Walter
Markus Lueken
author_facet Onno Linschmann
Durmus Umutcan Uguz
Bianca Romanski
Immo Baarlink
Pujitha Gunaratne
Steffen Leonhardt
Marian Walter
Markus Lueken
author_sort Onno Linschmann
collection DOAJ
description With higher levels of automation in vehicles, the need for robust driver monitoring systems increases, since it must be ensured that the driver can intervene at any moment. Drowsiness, stress and alcohol are still the main sources of driver distraction. However, physiological problems such as heart attacks and strokes also exhibit a significant risk for driver safety, especially with respect to the ageing population. In this paper, a portable cushion with four sensor units with multiple measurement modalities is presented. Capacitive electrocardiography, reflective photophlethysmography, magnetic induction measurement and seismocardiography are performed with the embedded sensors. The device can monitor the heart and respiratory rates of a vehicle driver. The promising results of the first proof-of-concept study with twenty participants in a driving simulator not only demonstrate the accuracy of the heart (above 70% of medical-grade heart rate estimations according to IEC 60601-2-27) and respiratory rate measurements (around 30% with errors below 2 BPM), but also that the cushion might be useful to monitor morphological changes in the capacitive electrocardiogram in some cases. The measurements can potentially be used to detect drowsiness and stress and thus the fitness of the driver, since heart rate variability and breathing rate variability can be captured. They are also useful for the early prediction of cardiovascular diseases, one of the main reasons for premature death. The data are publicly available in the UnoVis dataset.
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spelling doaj.art-023f581b66d242d8bf4d0ea08395eeee2023-11-17T21:17:39ZengMDPI AGSensors1424-82202023-04-01238400210.3390/s23084002A Portable Multi-Modal Cushion for Continuous Monitoring of a Driver’s Vital SignsOnno Linschmann0Durmus Umutcan Uguz1Bianca Romanski2Immo Baarlink3Pujitha Gunaratne4Steffen Leonhardt5Marian Walter6Markus Lueken7Medical Information Technology, Helmholtz Institute, RWTH Aachen University, 52074 Aachen, GermanyMedical Information Technology, Helmholtz Institute, RWTH Aachen University, 52074 Aachen, GermanyMedical Information Technology, Helmholtz Institute, RWTH Aachen University, 52074 Aachen, GermanyMedical Information Technology, Helmholtz Institute, RWTH Aachen University, 52074 Aachen, GermanyToyota Collaborative Safety Research Center, Toyota Motors Corporation, Ann Arbor, MI 48105, USAMedical Information Technology, Helmholtz Institute, RWTH Aachen University, 52074 Aachen, GermanyMedical Information Technology, Helmholtz Institute, RWTH Aachen University, 52074 Aachen, GermanyMedical Information Technology, Helmholtz Institute, RWTH Aachen University, 52074 Aachen, GermanyWith higher levels of automation in vehicles, the need for robust driver monitoring systems increases, since it must be ensured that the driver can intervene at any moment. Drowsiness, stress and alcohol are still the main sources of driver distraction. However, physiological problems such as heart attacks and strokes also exhibit a significant risk for driver safety, especially with respect to the ageing population. In this paper, a portable cushion with four sensor units with multiple measurement modalities is presented. Capacitive electrocardiography, reflective photophlethysmography, magnetic induction measurement and seismocardiography are performed with the embedded sensors. The device can monitor the heart and respiratory rates of a vehicle driver. The promising results of the first proof-of-concept study with twenty participants in a driving simulator not only demonstrate the accuracy of the heart (above 70% of medical-grade heart rate estimations according to IEC 60601-2-27) and respiratory rate measurements (around 30% with errors below 2 BPM), but also that the cushion might be useful to monitor morphological changes in the capacitive electrocardiogram in some cases. The measurements can potentially be used to detect drowsiness and stress and thus the fitness of the driver, since heart rate variability and breathing rate variability can be captured. They are also useful for the early prediction of cardiovascular diseases, one of the main reasons for premature death. The data are publicly available in the UnoVis dataset.https://www.mdpi.com/1424-8220/23/8/4002unobtrusive sensingcapacitive ECGmagnetic induction monitoringreflective PPGseismocardiographyprivate space
spellingShingle Onno Linschmann
Durmus Umutcan Uguz
Bianca Romanski
Immo Baarlink
Pujitha Gunaratne
Steffen Leonhardt
Marian Walter
Markus Lueken
A Portable Multi-Modal Cushion for Continuous Monitoring of a Driver’s Vital Signs
Sensors
unobtrusive sensing
capacitive ECG
magnetic induction monitoring
reflective PPG
seismocardiography
private space
title A Portable Multi-Modal Cushion for Continuous Monitoring of a Driver’s Vital Signs
title_full A Portable Multi-Modal Cushion for Continuous Monitoring of a Driver’s Vital Signs
title_fullStr A Portable Multi-Modal Cushion for Continuous Monitoring of a Driver’s Vital Signs
title_full_unstemmed A Portable Multi-Modal Cushion for Continuous Monitoring of a Driver’s Vital Signs
title_short A Portable Multi-Modal Cushion for Continuous Monitoring of a Driver’s Vital Signs
title_sort portable multi modal cushion for continuous monitoring of a driver s vital signs
topic unobtrusive sensing
capacitive ECG
magnetic induction monitoring
reflective PPG
seismocardiography
private space
url https://www.mdpi.com/1424-8220/23/8/4002
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