Sistem Monitoring Detak Jantung dan Saturasi Oksigen Berbasis Internet of Things (IoT) Menggunakan Sensor MAX30102 dan Nodemcu ESP8266

Abstract

Technological advancements have significantly impacted daily life, especially in the medical field. The heart, as a vital organ, plays a crucial role in pumping blood throughout the body, with a normal heart rate ranging between 60-100 bpm. Maintaining a normal heart rate and adequate oxygen saturation is essential for optimal health. Arrhythmia, a disorder of heart rhythm, includes tachycardia (>100 bpm) and bradycardia (<60 bpm). Monitoring heart rate and oxygen saturation are vital health indicators, yet existing medical devices are often expensive and inaccessible. Therefore, there is a need for affordable and accurate monitoring devices. This study developed an Internet of Things (IoT)-based heart rate and oxygen saturation monitoring device using the MAX30102 sensor and NodeMCU ESP8266. Data from the sensor is transmitted to the cloud and visualized via smartphone. Testing showed that this device functions optimally with a 90% accuracy rate. The system works by detecting heart rate and oxygen saturation when a finger is placed on the MAX30102 sensor, displaying the results in real-time. The highest recorded error rates were 0.034% (BPM) and 0.031% (SpO2), with average error rates of 0.0283% (BPM) and 0.0253% (SpO2).