Development of an IOT-enabled universal lid for detecting food spoilage/
Harlod James R. Batistiana, Marc Iverson G. Datay, Mowell Jezer B. Dimazana, Shivakumar E. Sunderamurthy jr., and Jay Rhon Isaac D. Viray .--
- Manila: Technological University of the Philippines, 2024.
- xi, 113pages: 29cm.
Bachelor's thesis
College of Industrial Technology .--
Includes bibliographic references and index.
Food spoilage is a significant contributor to global food waste. This problem poses health risks including foodborne illnesses and in extreme cases, fatalities. Spoilage may occur at home due to improper storage and lack of visibility in refrigerators. The study’s objective is to address the issues of waste reduction and food safety by introducing a solution that integrates sensor technology and the IoT framework. The device, designed as a smart lid, is continuously monitoring key indicators of food spoilage, including methane and ammonia. Using MICS-5524 and MQ-137 gas sensors with the addition of DHT22 for the temperature, the device can tell whether it is placed in a refrigerator to adjust the time when the device will send a reminder to the user if the food is about to be spoiled. The data gathered is processed by the ESP32 microcontroller and displayed in real time on the mobile application. The users can also view the history of the data logs and select the type of food they are trying to monitor. Meticulous testing on the hardware and software ensures functionality and reliability. The lid and tray are compatible with standard dinner plates. The lid, tray, and case for the PCB were fabricated using PLA+ filament a food-grade material ideal for the project involving food. The device was evaluated by 30 respondents composed of professionals with food safety backgrounds. Based on the project's evaluation, the system achieved a grand weighted mean of 4.31 accompanied by a descriptive rating of "Very Acceptable" for all criteria.