Key result
Contact-less microwave Doppler sensor measures heart and breathing rates without traditional contact methods.
Why the study?
Measuring vital signs currently requires close physical contact with patients, highlighting the growing need for contactless measurement alternatives.
A microwave-based contact-less sensor using the Doppler effect offers a potential alternative to traditional contact-based vital sign monitoring.
Hypothesis-generating for contactless monitoring; prospective validation trials needed before clinical adoption.
The pandemic has brought upon us a time where people fear physical contact with one another no matter how little it is. On this note, we find many hospitals and clinics require to get close to a patient to get his/ her vital signs, especially heartbeat, BPM, Oxygen Saturation level, etc. This basic need to measure all these vitals in a contact-less fashion has been growing ever since the pandemic. This project proposes a solution that makes a substantial alternative to sonography (stethoscope) or photoplethysmography. The proposed system uses microwaves and illustrates how this could be used in sensing the heart rate by applying a simple concept in physics, the dopplers effect. This sensor could be thus used in a wide range of bio-telemetry applications and intelligent appliances. This sensor also opens up a new perspective for physical data collection, not just limited to the heartbeat. Also, the radar functionality gives us three different waveforms one the breathing rate, two the heart rate, and three the external noise added due to physical movement or interference due to other objects.
No takes yet. Share an insight, caveat, or question.
Bhuvaneswari et al. (2022) studied this question. Microwave-based contact-less heartbeat sensor vs. Stethoscope or photoplethysmography was evaluated on Heart rate and breathing rate measurement. A proposed contact-less sensor using microwaves and the Doppler effect can measure heart rate and breathing rate as an alternative to traditional contact-based methods.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: