Health Monitoring System using Arduino with SMS Alert and Remote Access

The increasing demand for efficient healthcare solutions has led to the development of innovative

monitoring systems, particularly for the elderly and patients in remote areas. This paper presents a health

monitoring system that uses biomedical sensors and leverages the Internet of Things (IoT) technology to provide

real-time patient health data with SMS alerts and remote access capabilities. The system uses an Arduino UNO

microcontroller along with vital sensors, including a pulse oximeter for measuring blood oxygen levels, a

temperature sensor for monitoring body temperature and some different sensors. Data are transmitted securely

using an ESP8266 WiFi module, enabling access by healthcare professionals from any location. In addition, the

integration of a GSM module facilitates immediate alerts in critical situations, thereby ensuring timely medical

intervention. The system offers an innovative, low-cost, and portable solution that enhances patient monitoring,

reduces the need for physical consultations, and enables proactive healthcare management. With tested accuracy

rates of 98.5% for pulse rate measurement and 99.3% for body temperature detection, the proposed system

provides a robust framework for modern health diagnostics and monitoring.