IoT-Based Low-Cost Cold Storage Atmosphere Monitoring and Controlling System

Temperature and humidity monitoring is crucial when it comes to the prolonged storage of perishable foods and crops in cold storage, as the use of correct temperature while controlling the moisture levels is a must not only for the safety of those products but also to ensure the quality. With the help of Internet of Things (IoT), the monitoring as well as the controlling of the Temperature and humidity of a system can be done automatically from anywhere in the world. This paper presents an IoT-based low-cost automatic cold storage monitoring and controlling system. The proposed system includes a sensor for measuring both temperature and humidity, a microcontroller, a DC-DC step down converter-based power supply module, a cooling fan to lower the temperature and an app to monitor and control the temperature of the cold storage system. The hardware prototype of the system has been tested for consecutive three months for ensuring the accuracy.