Diseño de una arquitectura usando el protocolo Message Queue Telemetry Transport (MQTT) sobre plataformas de bajo coste, para monitorización de procesos industriales.

Abstract

The objective of this work was to design an architecture for the monitoring of industrial processes using the MQTT protocol on low-cost platforms, such as the BeagleBone Black, aligned with Industry 4.0 and the application of the Internet of Things (IoT). MQTT is a subscription-based publication messaging protocol whose communication is based on topics, with a client-server operation scheme. The proposed architecture is executed on a laboratory application for the classification, the process controller is a PLC and the communication architecture consists of two clients and a broker with a star type topology, the functionality of the proposal is demonstrated through operational and communication tests, concluding that the use of MQTT protocol on low cost platforms allows the monitoring of industrial processes using a web page and optimal transmission speeds are obtained, this is demonstrated by identifying the transmission speed by means of packet capture using Wireshark, both for MQTT and TCP protocol, the data of the samples obtained are submitted to Mann Whitney’s U hypothesis test with a 95% confidence level, where as a result, a significance level calculated of 0.017 is obtained less than 0.05, therefore, the null hypothesis is rejected and the proposal hypothesis is accepted, because higher transmission speeds of MQTT over TCP are obtained, since it is a light and simple protocol, which also has the characteristic of being scalable, this type of architecture is ideal for restricted environments.