Development of smart refrigerator based on message queuing telemetry transport

Abstract

Online shopping is becoming increasingly popular. However, the perishability of fresh food products requires them to be refrigerated when being shipped, and consumers must also accept the goods immediately when they are delivered. Multiple deliveries are not only a waste of resources but also reduce the freshness of the food products. We examined delivery boxes to design a smart delivery cabinet combined with a cooling chip. Its program uses Message Queuing Telemetry Transport (MQTT) to receive real-time information, view the cabinet's real-time temperature and humidity, set temperature conditions, and open or close the cabinet door. Consumers can remotely open or close the box and adjust its temperature so that they do not have to wait for goods to be delivered at home or waste resources by forcing couriers to make multiple deliveries.