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Abstract: In this work, a detection and classification method for sleep apnea and hypopnea, using photopletysmography (PPG) and peripheral oxygen saturation (SpO 2) signals, is proposed. The detector ...
End-to-end SpO₂ and heart-rate measurement system. Analog front-end conditions a reflective PPG signal; an ESP32 (ESP-IDF, FreeRTOS) samples and streams the data over MQTT; a Python pipeline runs the ...
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