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- Free software as tool for students of computer engineering courses: a case studyPublication . André, Gonçalo; Costa, Mónica; Metrôlho, J.C.M.M.; Lopes, EuricoFree software has been recognized for many as a differentiated culture of development and use of software that can be strategically and cause economic impact. One of the basic aspects for the success of this paradigm is the capacity of professionals to be able to absorb and to spread the culture of the free software of ample form. In this mission, and several others, the University must assume its role of generation and diffusion of new knowledge, thus contributing for the propagation of the culture of free software development. It was based on this idea that the work that we will present on the present article as appeared. Thus, based on a partnership with a commercial company, the idea of to build a project based on three components: a software application; a base philosophy (use of free software); a goal (that the pupils acquire in the end of its project know how with applicability in "the real" world outside of the Education Institution).
- Modeling and simulation for production improvementPublication . Apolinário, Jorge; Veríssimo, João; Metrôlho, J.C.M.M.; Pedro, João; Lopes, EuricoThe main aim of this paper is to describe a developed computer application to simulate the production system of a company located in Castelo Branco-Portugal. Simulation is used to help to fulfill the necessities of the enterprise in what concerns to its constant optimization and its need to improve its performance during production. It also helps on finding and study potential problems such as the case of bottleneck lines, before they can real happen. This application allows the implementation of changes in the model, to transform the production system and to stimulate the new system in order to check out if this brings more advantages than the one already installed. The application also allows to simulate the production of a certain number of pieces and to calculate the period of time involved in its production, as well.
- Design and implementation of a data pick up system in apparel industryPublication . Ferreira, Tânia; Coroado, Alexandra Maria Martins; Pereira, António; Metrôlho, J.C.M.M.; Lopes, EuricoThe layout of the factories in the apparel industry has several processing stations that are grouped in sections that have to do with a particular task (ex. trousers stitch). This together with high levels of production capacity demands the implementation of automatic monitoring systems that allow some sort of feedback related with the production progress of those stations. This paper describes a system that is being developed at Escola Superior de Tecnologia de Castelo Branco, which is part of the Instituto Politécnico de Castelo Branco. It consists of a prototype for a real time data pick up system, using the Controller Area Network (CAN) [1] bus. The aimed objective is to collect the data contained in bar code labels that are coupled to cloths pieces in an apparel factory during the production process. Those labels have useful information to the production stage (ID number of the piece), and accompany each apparel piece. This system is part of a more global system that will allow the production management using a wed platform linking the commercial, production scheduling, manufacturing control and customer/seller stages.
- Web-CAN interface for access control and monitoringPublication . Ribeiro, Fernando Reinaldo; Metrôlho, J.C.M.M.; Lopes, EuricoThis paper describes a web-based system which allows the user to manage and to do real time monitoring the access to the educational building spaces, using two data nets. The first one is based on the CAN bus for data acquisition and actuation tasks to which are connected control devices like, magnetic cards readers, door locks and sensors. The second one is an Internet/Intranet infrastructure and uses standard web technologies like PHP and Java to provide an effective control and real time monitoring. This system is implemented on the Linux operating system using the Apache HTTP server and make use of standard technologies in use on the Web, to make an effective campus-wide security system. To close the gap between these two nets we used a CAN/Intranet gateway. In this paper the system layout and its main components are described.
- A target environment programming language to improve developer's productivity: a case studyPublication . Metrôlho, J.C.M.M.; Costa, Mónica; Ribeiro, Fernando Reinaldo; Lopes, EuricoThis paper presents a target-specific programming language (TSL) that was designed to improve the design cycle of code generation for an industrial embedded system. The native assembly code, the new language structure and their constructs, are presented in the paper. The proposed TSL is expressed using words and terms that are related to the target’s domain and consequently it is now easier to program, understand and to validate the desired code. It is also demonstrated the language efficiency by comparing some code described using the new language against the previous used code. The design cycle is improved with the usage of the TSL because description time and debug time are significantly reduced with this new software tool. This is also a case of university-industry partnership.
- Software livre: da Academia para o mundo empresarialPublication . André, Gonçalo; Costa, Mónica; Metrôlho, J.C.M.M.; Lopes, EuricoCada vez mais se questiona a importância de utilizar plataformas de desenvolvimento referidas vulgarmente por software free e projectos open source. É neste contexto que surge o presente artigo o qual descreve o desenvolvimento de um trabalho no âmbito de um curso de Engenharia Informática. O objectivo consiste na implementação de um site de comércio electrónico assente sobre a filosofia de utilização de ferramentas free. Ao longo das secções do artigo é apresentada a arquitectura e as opções que a aplicação desenvolvida permite. Ainda tendo por base o trabalho aqui descrito, refira-se a interligação e colaboração entre a instituição de ensino e o “mundo real” permitindo ao aluno tomar conhecimento com o que poderá ser o seu ambiente de trabalho num futuro próximo, ou seja, preparando-o para a realização de trabalhos no domínio da Engenharia Informática.
- Greenhouse watching system using multi-technologiesPublication . Metrôlho, J.C.M.M.; Cruz, S.; Morato, José; Pereira, Fernando Leite; Lopes, EuricoTraditional agriculture uses empiric methods and is very exposed to meteorological conditions. To increase the agriculture production, greenhouses had appeared to allow crops with higher quality. Greenhouses also permit the study of cause-effect concepts that by them allow building models that improve the crop’s production and quality. Based on this reality, this paper presents a system developed by researchers of two schools of the Instituto Politécnico of Castelo Branco(IPCB) to monitor a greenhouse located in the campus of Escola Superior Agrária (ESA). This proposed system uses several different technologies.
- Data gathering system for apparel industryPublication . Ferreira, Tânia; Coroado, Alexandra Maria Martins; Pereira, António; Metrôlho, J.C.M.M.; Lopes, EuricoThis paper describes a project that is being developed at Escola Superior de Tecnologia - Instituto Politécnico de Castelo Branco – Portugal. It consists of a prototype for a real time data pick up system, using the Controller Area Network (CAN) bus. The goal is the gathering of data contained in bar code labels that are coupled to cloths pieces in an apparel factory during the production process.
- Can based domotic system using TMS320F243 controllerPublication . Metrôlho, J.C.M.M.; Pereira, António; Costa, Mónica; Cardoso, José C.; Lopes, EuricoThe increasing demand of comfort levels in the home area stimulates the development of systems to reach several goals. Some features of this kind of systems are: energy savings, environmental control, safety monitoring, remote definition of the system set points, etc. This kind of systems is made up of several units spread in the target areas of the house where they are implemented. Those units communicate between them and the master stations through different sort of links: cable, radio frequency, optical fibre, power line, etc. Also, they can use different kind of communications protocols like: Controller Area Network (CAN), Profibus, Bitbus, user defined, etc. To implement the mentioned systems there are a large quantity of devices, furnished from several chip manufacturers. For example, T exas Instruments as Digital Signal Processors (DSP) that have embedded CAN modules to allow easy and powerful solutions like for instance the improving of motor control applications using the above-mentioned communication protocol. This paper describe a CAN based system that uses a DSP Controller and allows the control of several actuation/acquisition devices that form a flexible, robust and easy maintained Domotic network.