Simulación del control de contenedores usando el protocolo MQTT

Abstract

The Internet of Things (IoT) has become a technology that offers solutions, both to software and hardware level, especially in physical devices, which serve as a tool in the daily work of human beings. Likewise, it has a set of protocols for the flow of messages that allow communication between several applications asynchronously, which is an alternative for machine-to-machine interaction machine (M2M). A problem that has been presented in the cargo transportation and logistics industry is the of the control of its refrigerated containers, which, in most cases, show inconveniences regarding its real-time location and temperature review; two topics that The transport union is concerned about the lack of safety on the roads and the conservation of the products they distribute, causing a possible loss of merchandise. A JavaScript application was designed based on the MQTT communication protocol that uses a publish-subscribe model, defined by two types of network entities: a broker messages that plays the role of server and clients that can be sensors, applications or that interact with the broker, said clients connect with objects of the broker through a subscription to a “Topic”, the client sends publications to the broker, and the broker is in charge of distribute them to all the clients that belong to that “Topic”. As a result, the possibility of evaluating the status of the merchandise remotely is provided, allowing you to consult and change the cooling data, as well as the power-on status and container shutdown, configure alerts via an email send and verify through a Global Positioning System (GPS), where the vehicle is located; Internally there is an algorithm that simulates the sending of massive and random data vii every five hundred milliseconds, and the temperature settings are established that are under a range of minus fifty to fifty degrees, thus achieving greater precision and control of The containers. With the implementation of the MQTT communication protocol and the development of the application, managed to demonstrate in a controlled environment, the configuration, monitoring and management of containers; based on optimal performance in the visualization of data in in real time, in the same way, the diagnosis of failures and generation of alerts that allow mitigating damage to merchandise and reduce security risks in transportation.