University of Oulu

F. Wolling, K. van Laerhoven, P. Siirtola and J. Röning, "PulSync: The Heart Rate Variability as a Unique Fingerprint for the Alignment of Sensor Data Across Multiple Wearable Devices," 2021 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops), 2021, pp. 188-193, doi: 10.1109/PerComWorkshops51409.2021.9431015

PulSync : the heart rate variability as a unique fingerprint for the alignment of sensor data across multiple wearable devices

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Author: Wolling, Florian1; Van Laerhoven, Kristof1; Siirtola, Pekka2;
Organizations: 1Ubiquitous Computing University of Siegen Siegen, Germany
2Biomimetics and Intelligent Systems Group University of Oulu Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.4 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2021102252042
Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-10-22
Description:

Abstract

Most off-the-shelf wearable devices do not provide reliable synchronization interfaces, causing multi-device sensing and machine learning approaches, e.g. for activity recognition, still to suffer from inaccurate clock sources and unmatched time. Instead of using active online synchronization techniques, such as those based on bidirectional wireless communication, we propose in this work to use the human heartbeat as a reference signal that is continuously and ubiquitously available throughout the entire body surface. We introduce PulSync, a novel approach that enables the alignment of sensor data across multiple devices utilizing the unique fingerprint-like character of the heart rate variability interval function. In an evaluation on a dataset from 25 subjects, we demonstrate the reliable alignment of independent ECG recordings with a mean accuracy of -0.71±3.44 samples, respectively -2.86±11.43 ms at 250 Hz sampling rate.

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ISBN: 978-1-6654-0424-2
ISBN Print: 978-1-6654-4724-9
Pages: 188 - 193
Article number: 9431015
DOI: 10.1109/PerComWorkshops51409.2021.9431015
OADOI: https://oadoi.org/10.1109/PerComWorkshops51409.2021.9431015
Host publication: 2021 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events, PerCom Workshops 2021. 22-26 March 2021, Kassel, Germany
Conference: IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events
Type of Publication: A4 Article in conference proceedings
Field of Science: 113 Computer and information sciences
Subjects:
Funding: The main author's research visit at the Biomimetics and Intelligent Systems Group of the University of Oulu, Finland has been supported by the University of Siegen and the German Academic Exchange Service (DAAD). The data has been processed by the HoRUS cluster, University of Siegen.
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