Key result
Novel LED-LED PPG device successfully acquires signals with amplitudes that correlate with breathing rate.
Why the study?
Non-invasive measurement of oxygen saturation and heart rate using PPG with LED-LED configuration and its correlation with breathing rate requires effective signal acquisition methods.
The proposed LED-LED configuration provides a cost-effective, low-power solution for non-invasive acquisition of heart rate and oxygen saturation signals.
we present an approach for non-invasive signal acquisition in healthcare applications, specifically aiming the measurement of oxygen saturation (SpO2) and heart rate (HR) using photoplethysmography (PPG). Our proposed project emphasis on the design of a circuit that uses light-emitting diodes (LEDs) both as emitters and detectors. Through the use of a Field Programmable Gate Array (FPGA), we are able to effectively control the LEDs. By employing three LEDs, with two serving as emitters and one as a detector, we successfully obtain PPG signal after removing the noise. This work also demonstrates the correlation between PPG signal amplitudes and changes in breathing rate, showing lower amplitudes with decreased oxygen concentration and higher amplitudes with increased breathing rates. This proposed circuit design gives a cost-effective solution with low power consumption, making it highly suitable for practical implementation.
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Khan et al. (2023) studied this question. LED-LED configuration PPG device was evaluated on Correlation between PPG signal amplitudes and changes in breathing rate. A novel LED-LED configuration PPG device successfully acquired signals and demonstrated that PPG signal amplitudes correlate with breathing rate.
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