Pulse Oximeter Prototype Equipped with Monitoring on Android

Abstract

The increase in obesity and cardiovascular disorders underscores the importance of health monitoring, particularly regarding oxygen saturation and heart rate. This study aims to design and develop a prototype pulse oximeter with monitoring capabilities via an Android application using Bluetooth technology. The system utilizes the MAX30102 sensor to measure oxygen saturation (SpO2) and heart rate (BPM), with the ESP32 microcontroller for data processing and connectivity. Measurement data are displayed on an OLED screen and an Android application built on Kodular. Testing involved comparing measurement results with a calibrated reference device, showing an accuracy rate of 98.15% for SpO2 and 90.21% for BPM. An alarm feature was added to provide alerts if SpO2 drops below 95%. The results indicate that this device offers a practical solution for portable and efficient health monitoring, supporting more responsive healthcare services. Identified weaknesses, such as sensitivity to movement and finger positioning on the sensor, serve as points for further development.