A Testbed for the Development and Validation of Contactless Vital Signs Monitoring Systems
Zaid Farooq Pitafi, He Yang, Jiayu Chen, Yingjian Song, Jin Ye, Zion Tse, Kenan Song, WenZhan Song
TL;DR
This paper introduces a programmable testbed for generating realistic heart and respiratory rate signals to improve contactless vital signs monitoring systems.
Contribution
A single-motor-based testbed that generates realistic cardiorespiratory signals across a wide physiological range.
Findings
The synthetic signals correlate strongly (0.85) with data from 75 human subjects.
The system supports the development of robust algorithms for extreme physiological ranges.
It reduces the need for extensive real-world data collection for system validation.
Abstract
Contactless monitoring of vital signs such as heart rate (HR) and respiratory rate (RR) has gained significant attention, with vibration-based sensors like geophones showing promise for accurate, non-invasive monitoring. However, most existing systems are developed with healthy subjects and may not generalize well to extreme physiological ranges, such as those observed in infants or patients with arrhythmia. Moreover, the underlying mechanisms of cardiorespiratory vibration dynamics remain insufficiently understood, limiting clinical adoption of these systems. To address these challenges, we present a programmable cardiorespiratory testbed capable of generating realistic HR and RR signals across a wide range (HR: 40–240 bpm, RR: 8–40 bpm). Our system uses a voice coil motor that acts as the vibration source, driven by a Raspberry Pi-based control circuit. Unlike similar systems that use…
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Taxonomy
TopicsNon-Invasive Vital Sign Monitoring · Phonocardiography and Auscultation Techniques · ECG Monitoring and Analysis