Cooking oil purity and reusability detection system using Embedded system

The reuse of cooking oil in kitchens poses significant health risks, as the oil undergoes chemical decomposition over time, releasing harmful compounds associated with heart disease and cancer. This paper presents a Cooking Oil Quality Detection System designed to monitor oil quality in real time using an ESP32 microcontroller and integrated sensors. The system employs turbidity, dielectric, DS18B20 temperature, and RGB colour sensors to provide a comprehensive assessment of the oil’s condition. Data is displayed on an OLED screen, while green, yellow, and red LEDs offer intuitive feedback on oil safety. This cost-effective, non-invasive solution enhances food safety by enabling timely decisions on oil reuse. Future enhancements include machine learning for predictive analytics and Internet of Things (IoT) integration for remote monitoring.