AV40 - Técnicas de rediseño. Prototipos virtuales

Rediseño de una tabla de planchar ropa aplicando diferentes técnicas de metodología de diseño de productos

AV40 - Técnicas de rediseño. Prototipos virtuales

Aplicación de diferentes técnicas propias de la Metodología del Diseño para la mejora de un producto industrial previamente seleccionado

AV40 - Tabla de planchar

Diseño de una tabla de planchar

AV40 - Tècniques de redisseny. Prototips virtuals

Aplicació pràctica de tècniques de re-disseny de productes industrials. Re-disseny d'una taula domèstica per planxar roba a fi i efecte d'aconseguir un producte més innovador i, a la vegada, desafiant

AV40 - Rediseño de una tabla de planchar

Técnicas de rediseño aplicadas a una tabla de planchar doméstica.

Melhoria do sistema produtivo de escadotes da FUTE – Fábrica de Utilidade de Tubos, SA

Atualmente as empresas encontram-se perante uma sociedade cada vez mais competitiva e desenvolvida, sendo por isso, imperativo a procura da melhoria contínua como forma de assegurar a adaptação da organização empresarial às alterações socioeconómicas que possam surgir. Incutir esta cultura é fundamental dentro do meio empresarial. A redução dos custos e o aumento da produtividade são dois dos principais desafios que todas as empresas se confrontam diariamente, sendo para isso desenvolvidas e aplicadas várias metodologias. A presente dissertação foi realizada no âmbito do Mestrado em Engenharia Mecânica no ramo de Gestão Industrial no Instituto Superior de Engenharia do Porto. Este trabalho realizou-se no ambiente industrial da empresa Afer FUTE - Fábrica de Utilidades de Tubos, S.A, que é uma empresa dedicada, essencialmente à produção de Tábuas de Engomar e Escadotes. O objetivo deste projeto visava melhorar todo o sistema produtivo da secção dos Escadotes, englobando assim todos os procedimentos desde o momento de entrada dos materiais até à obtenção do produto acabado. Tendo em vista a resolução dos problemas inicialmente existentes na empresa, foram apresentadas propostas de melhoria do processo produtivo segundo uma visão, Lean Production ou seja baseada na eliminação de qualquer tipo de desperdícios. A implementação destas propostas permitiu a obtenção de resultados positivos no Sistema Produtivo de Escadotes, nomeadamente um aumento de produtividade em cerca de 40%.

Design considerations for multilayer transmission line circuit boards.

Issued also as thesis (M.S.) University of Illinois.

Design and evaluation of multi-band RF energy harvesting circuits and antennas for WSNs

Radio frequency (RF) energy harvesting is an emerging technology that will enable to drive the next generation of wireless sensor networks (WSNs) without the need of using batteries. In this paper, we present RF energy harvesting circuits specifically developed for GSM bands (900/1800) and a wearable dual-band antenna suitable for possible implementation within clothes for body worn applications. Besides, we address the development and experimental characterization of three different prototypes of a five-stage Dickson voltage multiplier (with match impedance circuit) responsible for harvesting the RF energy. Different printed circuit board (PCB) fabrication techniques to produce the prototypes result in different values of conversion efficiency. Therefore, we conclude that if the PCB fabrication is achieved by means of a rigorous control in the photo-positive method and chemical bath procedure applied to the PCB it allows for attaining better values for the conversion efficiency. All three prototypes (1, 2 and 3) can power supply the IRIS sensor node for RF received powers of -4 dBm, -6 dBm and -5 dBm, and conversion efficiencies of 20, 32 and 26%, respectively. © 2014 IEEE.

Design of boundary-scan testing in CMOS image sensors for industrial applications: internship repor

Tests on printed circuit boards and integrated circuits are widely used in industry,resulting in reduced design time and cost of a project. The functional and connectivity tests in this type of circuits soon began to be a concern for the manufacturers, leading to research for solutions that would allow a reliable, quick, cheap and universal solution. Initially, using test schemes were based on a set of needles that was connected to inputs and outputs of the integrated circuit board (bed-of-nails), to which signals were applied, in order to verify whether the circuit was according to the specifications and could be assembled in the production line. With the development of projects, circuit miniaturization, improvement of the production processes, improvement of the materials used, as well as the increase in the number of circuits, it was necessary to search for another solution. Thus Boundary-Scan Testing was developed which operates on the border of integrated circuits and allows testing the connectivity of the input and the output ports of a circuit. The Boundary-Scan Testing method was converted into a standard, in 1990, by the IEEE organization, being known as the IEEE 1149.1 Standard. Since then a large number of manufacturers have adopted this standard in their products. This master thesis has, as main objective: the design of Boundary-Scan Testing in an image sensor in CMOS technology, analyzing the standard requirements, the process used in the prototype production, developing the design and layout of Boundary-Scan and analyzing obtained results after production. Chapter 1 presents briefly the evolution of testing procedures used in industry, developments and applications of image sensors and the motivation for the use of architecture Boundary-Scan Testing. Chapter 2 explores the fundamentals of Boundary-Scan Testing and image sensors, starting with the Boundary-Scan architecture defined in the Standard, where functional blocks are analyzed. This understanding is necessary to implement the design on an image sensor. It also explains the architecture of image sensors currently used, focusing on sensors with a large number of inputs and outputs.Chapter 3 describes the design of the Boundary-Scan implemented and starts to analyse the design and functions of the prototype, the used software, the designs and simulations of the functional blocks of the Boundary-Scan implemented. Chapter 4 presents the layout process used based on the design developed on chapter 3, describing the software used for this purpose, the planning of the layout location (floorplan) and its dimensions, the layout of individual blocks, checks in terms of layout rules, the comparison with the final design and finally the simulation. Chapter 5 describes how the functional tests were performed to verify the design compliancy with the specifications of Standard IEEE 1149.1. These tests were focused on the application of signals to input and output ports of the produced prototype. Chapter 6 presents the conclusions that were taken throughout the execution of the work.

A aplicação do design ergonômico aliado à semiautomatização de funções, como forma de redução de inconvenientes posturais em operadores de uma estação de corte de chapas de madeira

Pós-graduação em Design - FAAC

Design and prototyping of electronic PCBs for the study of the atmosphere in harsh environmental conditions

Progettazione, test e creazione di schede elettroniche per lo studio dell'atmosfera in condizioni ambientali difficili.

Design and Development of an FPGA-based Distributed Computing Processing Platform

This thesis presents two frameworks- a software framework and a hardware core manager framework- which, together, can be used to develop a processing platform using a distributed system of field-programmable gate array (FPGA) boards. The software framework providesusers with the ability to easily develop applications that exploit the processing power of FPGAs while the hardware core manager framework gives users the ability to configure and interact with multiple FPGA boards and/or hardware cores. This thesis describes the design and development of these frameworks and analyzes the performance of a system that was constructed using the frameworks. The performance analysis included measuring the effect of incorporating additional hardware components into the system and comparing the system to a software-only implementation. This work draws conclusions based on the provided results of the performance analysis and offers suggestions for future work.

Guidelines for the application of arrow boards in work zones. Final report.

Federal Highway Administration, Office of Research, Washington, D.C.

Fast heuristic techniques for placing and wiring printed circuit boards /

Thesis--University of Illinois at Urbana-Champaign.

Field experiments on competition between three foliose lichens using the de Wit experimental design

Competition between three foliose, saxicolous lichens common on slate rock in South Gwynedd, Wales, U.K. was studied experimentally using the de Wit design. Fragments of the three species were cut from the edges of large thalli, glued to 5 x 5 cm plots marked out on pieces of slate which were then placed on boards in the field. For each combination of pairs of species, the two species were grown either in monoculture at a density of 24 fragments per plot or together in three mixtures in differing proportions, i.e. species A:B with 16:8, 12:12 and 8:16 fragments per plot; the density remaining constant throughout. Area of the species in the plots after 3 years was used as an estimate of growth. Physcia orbicularis and Parmelia glabratula ssp. fuliginosa grew similarly in monoculture. In mixtures of the two, growth of each species was linearly related to its proportion in a mixture, suggesting little competition had occurred during three years. By contrast, the growth of Parmelia conspersa in monoculture was significantly greater than that of P. orbicularis or P. glabratula. In addition, the growth of both species was substantially reduced in mixtures with P. conspersa; P. glabratula being eliminated in the mixture in which it was the minority species. These results suggest that P. conspersa should predominate in communities with either of the other two species and, in the absence of P. conspersa, communities dominated by P.orbicularis and P. glabratula should be more stable.