Energy Harvesting and Health Monitoring Device

Abstract: Continuous monitoring of vital health parameters is essential for the early detection of medical emergencies and effective patient care, particularly in remote and rural regions where healthcare facilities and communication infrastructure are limited. Conventional health monitoring systems primarily rely on Wi-Fi, GSM, or internet connectivity, which often suffer from restricted coverage, high power consumption, and frequent battery charging requirements. This paper presents an Energy Harvesting Based Smart Health Monitoring Device Using LoRa Communication for Remote Healthcare Applications that enables reliable, low-power, and long-range health monitoring. The proposed system integrates a MAX30102 sensor for heart rate and blood oxygen saturation (SpO₂) measurement, an MLX90632 sensor for body temperature monitoring, a GNSS/GPS module for location tracking, and an OLED display for real-time visualization of health parameters. An ESP 32 microcontroller performs data acquisition, processing, and communication management, while a solar energy harvesting unit with rechargeable energy storage ensures selfsustained operation and minimizes dependence on external charging sources. Health data are transmitted through LoRa technology, enabling communication over several kilometers without requiring cellular or internet networks. In emergency situations, the system automatically sends health status information along with precise GPS coordinates to facilitate rapid medical assistance. The proposed solution offers enhanced portability, energy efficiency, reliability, and cost-effectiveness, making it highly suitable for remote patient monitoring, elderly care, industrial worker safety, and disaster-response healthcare applications.

Keywords: Energy Harvesting, LoRa Communication, Health Monitoring System, Internet of Things (IoT),Healthcare Device, Remote Patient Monitoring, MAX30102 Sensor, ESP 32 microcontroller, Solar-Powered, Emergency Alert System.