IOT-BASED TEMPERATURE AND HUMIDITY CONTROL IN A REFRIGERATOR USING ARDUINO UNO

Abstract

One of the challenges in the cold agri-food chain industry is to check and control the temperature and humidity of the food storage to maintain the food quality. The need to have a food quality checking device is very much needed. There are attempts to supply systems or equipment for temperature and humidity control, but they are expensive and do not have effective integration of information needed together with the systems, such us between the equipment and various parameters. Therefore, this project discussed about a prototype that can be used to monitor and control the temperature and humidity parameters in a refrigerator. To achieve that, the prototype consists of hardware and software that are capable to connect to the internet and monitor the temperature and humidity readings, as well as regulating them. In this project, the hardware chosen were Arduino Uno microcontroller for data processing, ESP8266-01 module to connect the microcontroller to the internet, DHT11 sensor to detect the temperature and humidity of the refrigerator, 12 V-fan to regulate the parameters, 12 V-battery to power up the whole system and finally a website to show the data taken. The results indicated that the temperature and humidity can be controlled by the prototype through the fan when there is any change in the temperature. Ultimately, the cold food storage industry as well as household can benefit from the project whereby food spoilage and waste can be minimized.