Real-Time Monitoring and Controlling of Refrigerated Truck Using IoT

Abstract: Transportation is an important part of food chain, aiming at monitoring the temperature, humidity inside the refrigerator trucks and tracking the location of the refrigerator trucks. In this system, we have designed an intelligent monitoring system based on the Internet of thing, realized monitoring temperature and humidity inside the refrigerator trucks , and tracking the location of refrigerator trucks real-time in the entire transportation process by using advanced technologies like MQTT, Cloud Computing, sensor technology and the wireless communication technology. The proposed system uses an ESP32 as main control unit, DHT22 , proximity sensor, RTC, and GSP module. The system is very capable to monitor refrigerated truck from anywhere and anytime using a mobile application. This system is capable of monitoring data which can be displayed through mobile application and if any problem is detected the issue can be solved by human intervention. We can achieve good results of data monitoring such as temperature, humidity, door status and location with MQTT protocol. It is satisfied with the performance through the analysis of monitoring system and experiment results for the designed refrigerated truck monitoring system. Moreover, this proposed system has main advantages which minimizes the human efforts for the manual monitoring and product loss due to uncontrolled environment. Keywords: Refrigerator Trucks, Internet of Things, MQTT, ESP 32, Live GPS Location</jats:p