Bioimpedance; Biomedical monitoring; Continuous vitals monitoring; Electrocardiography; medical device; Monitoring; near real-time; sensor signal processing; Sensors; Temperature measurement; Temperature sensors; wearable electronics; wireless; Biomedical equipment; Blood pressure; Firmware; Signal processing; Wearable sensors; Bio-impedance; Continuous vital monitoring; Early warning score; Medical Devices; Near-real time; Sensor signal processing; Sensor signals; Signal-processing; Vital parameters
Abstract :
[en] In this work, we present a new device to monitor the five main vital parameters of hospitalized patients: heart rate, respiratory rate, blood oxygen saturation, blood pressure and temperature. The device consists of one single unit placed on the chest with two electrodes connected to the patient. The device continuously acquires the electrocardiogram, 3-wavelength photoplethysmogram, bioimpedance, body temperature and 3-axis acceleration. These raw data are securely sent via a WiFi access point to a local server where algorithms are running to calculate the five vital parameters, combined with the level of activity and the posture. Alarms, live stream, and a real-time estimation of the early warning score used to assess the instantaneous state of a patient are available to nurses to react quickly and adequately if needed. Thanks to its small form factor and weight the device is worn unobtrusively by the patient who can move without being restrained by wires; a small battery ensures an autonomy of a few days. In this paper, the firmware and hardware architectures are detailed comprising the list of the sensors, the main chips used and the casing. The relationships between what the sensors measure and the vital parameters of interest are discussed. IEEE
Disciplines :
Electrical & electronics engineering
Author, co-author :
Bellier, Pierre ; Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Systèmes microélectroniques intégrés
Coppieters 't Wallant D.; Belgium > Microsys Laboratory of University of Liege
Van den Bongarth H.; The Netherlands
Bijnens W.; The Netherlands
Aarts J.; The Netherlands
Vandenryt T.; Diepenbeek, Belgium
Thoelen R.; Diepenbeek, Belgium
Duflot, Patrick ; Centre Hospitalier Universitaire de Liège - CHU > > Secteur Appui méthodologique aux Projets GSI et Planification (APP)
Dupont, François ; Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Systèmes microélectroniques intégrés
Redouté, Jean-Michel ; Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Systèmes microélectroniques intégrés
Language :
English
Title :
A Wireless Low-power Single-unit Wearable System for Continuous Early Warning Score Calculation
Publication date :
2023
Journal title :
IEEE Sensors Journal
ISSN :
1530-437X
eISSN :
1558-1748
Publisher :
Institute of Electrical and Electronics Engineers Inc.
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