Automated Quality Inspection On Tile Border Detection Using Vision System

Most of the ceramic tile industry still doing the quality control by manually. The accuracy of the manual inspection by human is lower due to the harsh industrial environment with noise, extreme temperature and humidity. A camera should replace the human eyes to recognise the defect tile effectively. Thus, a suitable method have to investigate for implementing this function. This project aim to design and develop an automated quality inspection in ceramic tile industry using vision system. The performance of the system is analysed. An Imaging Source CMOS industrial camera is use to capture the tile border. Image processing with edge detection technique is use to analyse the captured image of tile border and identify the defective tiles. The image filtering and intensity of the light are adjust to evaluate the performance of the system. The overall automation process involves image capturing, image processing, and decision making. The defect detection algorithms are develop to differentiate the defective tile based on the edge detection technique. The system using background subtraction method has achieved 50% accuracy in identify the status of tile since it consist of many limitation. By evaluate the gradient variation on the tile border edge, the accuracy of the defect detection has achieved 80% in identify the tile conditio

Conceptualização de um sistema de apoio à produção na área cerâmica

Mestrado em Engenharia e Gestão IndustrialO presente trabalho complementa um período de estágio de 9 meses na Revigrés, e pretende demonstrar uma possível abordagem ao planeamento e controlo de produção de mosaicos cerâmicos. A gestão deste tipo de produtos é infame por ser complexa, ao ser afectada pela chamada falta de homogeneidade no produto, o que leva a que as empresas prefiram a flexibilidade que um planeamento informal, à base da experiência dos gestores, permite. Esta flexibilidade, contudo, tem custos aliados, como stocks excessivos e falta de coordenação nas operações, tanto internas como externas. O autor propõe, por isso, um sistema MRPII que lide com a Falta de Homogeneidade no Produto (FHP) do ambiente de produção de mosaicos cerâmicos.This work complements a 9-month internship at Revigrés, and pretends to demonstrate a possible approach to the ceramic tile production planning and control process. The management of this kind of products is infamous for being complex, as it is affected by the so-called lack of homogeneity in the product. This leads to companies in the sector adapting informal planning processes, based on the experience of the managers, that are, nevertheless, flexible. This flexibility, however, comes with some costs, with excessive stock levels and lack of coordination in both internal and external operations being just a few. For this reason, the author proposes a MRPII system, fine-tuned to deal with the Lack of Homogeneity in the Product (LHP) associated with the ceramic tile production environment