Sistema de supervisión y control de una celda de manufactura a través de tecnologías habilitantes de internet industrial de las cosas

Abstract

This document describes the development of a monitoring system for a manufacturing cell. The implementation of this system utilizes enabling technologies from the Industrial Internet of Things IIoT. The University of Cuenca’s Electrical Machines Laboratory owns a flexible manufacturing cell FMC that has been mostly left in disuse. This project is purposed to take advantage of this FMC. This cell consists primarily of actuators and sensors. These devices all interface with a PiXtend, a component of the FMC. Additionally, a Raspberry Pi acts as an Interface between the industrial components and a cloud computing platform. The communication between the PLC and the Raspberry Pi is by use of the OPC-UA protocol. A client software program on the Raspberry Pi receives data from an OPC-UA server. It interfaces with the cloud server by way of the MQTT protocol. This online server manages, processes and stores a database of the generated industrial data. This project considers both the hardware and software necessary for producing, compiling, transmitting, storing and processing the data stream. The process of compiling the data is carried out on the PiXtend, while the data storage is done locally as well as uploaded to the cloud server by way of the Raspberry Pi. The control and monitoring can be done with a low-cost local computer as well as remotely through other devices. The cloud server communicates through WebSockets. With the use of a webpage interface, it’s possible to monitor the various industrial processes. Various traffic tests are also carried out between the different protocols as well as a qualitative comparison of the FMC performance with the use of specific tools designed for the IIoT.