THE IMPLEMENTATION OF IOT & SMS BASED SMART REFRIGERATOR

Abstract

Wasted food due to spoilage is a critical resource issue. Food waste or food loss is food that is
discarded or lost uneaten. Currently, in the world, according to the Food and Agriculture
Organization of the United Nations (FAO), consumers waste about 1.3 billion tons of food
annually and consumers in rich countries waste about 222 million tons of food products Once
food products are purchased and set aside in a refrigerator, the users do not alert about their
food items’ expiration date and/or freshness unless they individually examine and track them.
Moreover, for food products which are not labelled with an explicit expiration date may lead
to significant food spoilage and additional expenditure for the users. However, with the latest
trend technology of the Internet of Things (IoT), this problem can be resolved. Combining the
idea of Internet of Things and smart kitchen evolution, the smart refrigerator system is
developed. The system consists of three main parts which are sensing module, control module
and transmission module. Sensing module consists of DHT11 and odour sensor while control
module consists of Arduino UNO and power supply unit and last but not least, the transmission
module consists of LCD module and Wi-Fi module. These modules work together to determine
contents status inside the refrigerator and notify the user about the condition and quantity of
the food via an SMS.