IoT-Based Blanket Warmer with Emergency Features (Alarm and Auto-Shutdown) and Android Display Integration

Abstract

Hypothermia is a medical condition in which the body’s temperature regulation mechanism struggles to maintain normal temperature under cold exposure, characterized by a core body temperature below 35°C. This condition disrupts the function of the nervous system and other vital organs, potentially leading to severe complications such as cardiac and respiratory failure or even death if untreated. Leveraging advancements in technology, this study presents the development of a blanket warmer equipped with emergency features such as an alarm and auto-shutdown, along with an Android-based monitoring system. The device is designed to assist nurses or users by displaying real-time body temperature and providing alerts during overheating incidents via a buzzer and Android notifications, enabling immediate intervention to turn off the device. The blanket warmer employs a DS18B20 temperature sensor to measure the heated air from a dry heater and a skin sensor connected to an Arduino microcontroller for monitoring and controlling patient body temperature and heat energy distribution. The device integrates with Android using the Blynk application for user-friendly operation. Testing results indicate that the tool achieves a body temperature reading accuracy of 99.64% and a blanket temperature accuracy of 99.22%.