IOT-Based Wireless Patient Monitor Using ESP32 Microcontroller

This paper discusses the details of an IoT-based wireless patient monitoring system designed to monitor patient electrocardiogram, oxygen saturation, and heart rate. Patients need to be physically present inside a hospital ward to be monitored by a doctor or physician using a patient monitor. This challenges individuals who cannot afford hospitalization fees, reside in remote areas, or are elderly. It also risks hospital staff when dealing with patients infected with highly contagious diseases like COVID-19. To address these issues, we propose developing a wireless patient monitoring system that enables doctors and nurses to monitor patients from the comfort of their homes. This system incorporates an ECG recording module and a SpO2 recording module, both interfaced with a microcontroller capable of Wi-Fi connection (ESP32). The microcontroller trans-mits the data acquired by the sensors to an online, realtime database called Firebase. Furthermore, our project includes a mobile application designed to retrieve data from the online realtime database and display it on the device's screen for healthcare professionals to monitor. This innovative solution aims to provide access to healthcare for a larger segment of the population, irrespective of their income or social status.