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Safe Drive+: Real-Time Driver Health Monitoring System

MIRZA SHERIFF 1, ANDREW BLESSING J 2, NAGAMANIKAM JAGADEEP R3, THOUFEEQ TR4, SIVASHANKAR B5
1,2,3,4Diploma scholars, Department of Automobile Engineering & Sri Krishna Polytechnic College, INDIA
Junior Drafting Officer, Department of Mechanical Engineering & Sri Krishna Polytechnic College, INDIA

Abstract - Road accidents involving heavy vehicles are frequently associated with sudden driver health emergencies such as cardiac arrest, hypoxia, heat stress, and
fatigue-related complications. Conventional monitoring approaches including wearable devices and camera-based driver monitoring systems often suffer from low compliance, poor environmental adaptability, and unreliable detection accuracy. This paper presents Safe Drive+ 2.0, a multi-point, real time driver health monitoring system integrated directly into the steering wheel, driver’s seat, and seat belt of heavy vehicles. The system employs pressure sensors and IR proximity sensors to ensure vital sign monitoring is activated only when the driver is present and properly positioned. The steering wheel integrates the MAX30102 sensor for heart rate (HR) and oxygen saturation (SpO₂) measurement. Temperature sensors (LM35/DS18B20) embedded in the seat monitor body and cabin temperature. The seat belt provides redundancy through fastening detection and additionalcontact sensing.  An ESP32 microcontroller processes sensor data and compares it against medically validated thresholds recommended by the World Health Organization (WHO), the Centers for Disease Control and Prevention (CDC), and the American Heart Association (AHA). When abnormal parameters are detected (SpO₂ ≤ 90%, HR < 45 bpm or > 120 bpm, body temperature < 35°C or > 38.6°C), a two-step safety protocol is initiated: (1) local alert via buzzer and RGB LED; (2) automatic GSM-based SMS alert with GPS location if unacknowledged. Sensor data is logged to an SD card for post-trip analytics.The system operates on a regulated 12/24V vehicle  supply with surge protection, ensuring reliability in harsh environments. Safe Drive+ 2.0 provides a low cost, retrofit-friendly, IoT-enabled solution for trucks, buses, and industrial vehicles, enhancing fleet safety and proactive driver health management.
Key Words: Driver Health Monitoring, Heavy Vehicle Safety, IoT in Transportation, MAX30102, ESP32, GSM Alert System, SpO₂ Monitoring, Fleet Safety, Embedded Systems, Real-Time Monitoring