DEVELOPMENT OF A TEMPERATURE MONITORING SYSTEM FOR MRI CHILLER AND HELIUM COMPRESSOR USING ESP32 WITH WEB-BASED INTERFACE

Abstract

The cooling system in Magnetic Resonance Imaging (MRI) machines plays a critical role in maintaining imaging performance and preventing quench, a failure event caused by the evaporation of liquid helium in the cryogenic tank. This study presents the design and development of a web-based monitoring system for chiller temperature and helium compressor status using the ESP32 microcontroller. The system integrates a DS18B20 digital temperature sensor to measure water temperature and transmits the data to a web interface for real-time visualization. Automatic alerts are configured to deliver push notifications and email warnings when the temperature exceeds safe thresholds or anomalies in compressor operation are detected. Initial testing demonstrated system functionality with a sensor accuracy of 98.24% and an average error of 1.76%. The system successfully simulated fault conditions and issued timely alerts, indicating its effectiveness in preventive maintenance. With these capabilities, the proposed solution offers a reliable, low-cost method to enhance equipment safety, reduce downtime, and support the longevity of MRI cooling components