24 documents found, page 1 of 3
Low-cost photoacoustic system for biomedical applications
Ferreira, João Filipe SObreiro; Pinto, Vânia Cristina Gonçalves; Matos, Tiago; Catarino, Susana Oliveira; Minas, Graça; Sousa, Paulo Jorge TeixeiraRecently, the field of photoacoustic (PA) imaging has garnered significant attention due to its ability to provide high-resolution images and real-time monitoring of biological tissues. However, PA systems have relied on expensive and complex laser sources and detection mechanisms, limiting their accessibility for widespread use in both clinical and research settings. So, this work aims to address these limitat...
Sediment circulation and accumulation sensors for in situ continuous monitoring
Matos, TiagoTese de doutoramento em Engenharia Eletrónica Industrial e Computadores (especialidade de Instrumentação e Microssistemas Eletrónicos); A zona costeira é uma região complexa em termos de dinâmica hidráulica, geológica e ambiental. A compreensão dos processos sedimentares é essencial para validar modelos e garantir a gestão e proteção de infraestruturas e populações. Contudo, a correlação entre as projeções e as...
A Demonstrator for future fiber-optic active SMART repeaters
Cruz, Nuno A.; Silva, António; Zabel, Friedrich; Ferreira, Bruno; Jesus, Sergio; Martins, Marcos S.; Pereira, Eduardo; Matos, Tiago; Viegas, RubenThe deep-sea environment still presents many challenges for systematic, comprehensive data acquisition. The current generation of SMART cables incorporates low-power sensors in long-range telecommunication cables to improve knowledge of ocean variables, aid in earthquake and tsunami warnings, and enhance coastal protection. The K2D Project seeks to expand SMART cables' capabilities by increasing the diversity o...
Wave profile and tide monitoring system for scalable implementation
Rocha, J. L.; Matos, Tiago; Faria, C. L.; Penso, Camila Maria Ramos Aires Moreira; Martins, Marcos Silva; Gomes, P. A.; Gonçalves, L. M.A versatile, miniaturized, cost-effective, low-power wave profile and tide monitoring system, capable of long-term and scalable deployment, was developed to integrate pressure and temperature sensors in an RS485 network, for standalone operation with organized memory or real-time shared data monitoring. The pressure and temperature sensors are controlled by low-power microcontrollers, that communicate the data ...
4-FSK High-Speed Underwater Acoustic Communication System
Araujo, Luis; Matos, Tiago; Cabral, José; Martins, MarcosOceans all over the world are an important way of sustainability in the lives of many people and have a high impact on the economy of most of the coastal countries. With the growth of underwater activity provided by the development of autonomous and remotely controlled vehicles and with the appearance of new underwater sensors, there is also a need to develop and design more robust underwater wireless networks ...
Design and in situ validation of low-cost and easy to apply anti-biofouling tec...
Matos, Tiago; Pinto, Vânia; Sousa, Paulo; Martins, Marcos; Fernández, Emilio; Henriques, Renato F.; Gonçalves, Luis MiguelBiofouling is the major factor that limits long-term monitoring studies with automated optical instruments. Protection of the sensing areas, surfaces, and structural housing of the sensors must be considered to deliver reliable data without the need for cleaning or maintenance. In this work, we present the design and field validation of different techniques for biofouling protection based on different housing m...
Wave profile and tide monitoring system for scalable implementation
Rocha, J. L.; Matos, Tiago; Faria, C. L.; Penso, Camila Maria Ramos Aires Moreira; Martins, Marcos Silva; Gomes, P. A.; Gonçalves, L. M.Apresentação de Poster em conferência Nacional.; Presentation of a wave profile and tide monitoring system, with low-cost and low-power pressure sensors connected to a datalogger in a wired or acustic network.
Stimulating the learning of Ethics and Critical Thinking: A class given by stud...
Leão, Celina Pinto; Alves, Anabela Carvalho; Silva, Vinicius Corrêa Alves; Sousa, Beatriz; Costa, Mariana; Ferreira, Ruben; Teixeira, Ana MargaridaThis paper presents the results of the work developed by two teams that were challenged to give a lecture to theirs peers about critical thinking and ethics in the context of an elective course. This elective course is running for the second year and it is offered to all students in a Portuguese university. The main idea of this course is to stimulate students to learn about contents normally not approached in ...
Network nodes for ocean data exchange through submarine fiber optic cable repea...
Martins, M. S.; Cruz, Nuno A.; Silva, António; Ferreira, Bruno; Zabel, Fred; Matos, Tiago; Jesus, Sergio; Pinto, André; Pereira, Eduardo; Matos, AníbalAs humanity progresses and globalization advances, humanized environment and associated systems increase in complexity and size. In earth systems, oceans represent an essential element of equalization and normal functioning. Ocean-atmospheric interactions are nowadays believed to be at the heart of all earth vital signs and climatic behaviours, and therefore are essential to accurate monitoring and understandin...
Ocean energy harvesting device for long-term monitoring applications
Faria, C.L.; Matos, Tiago; Martins, Marcos Silva; Lima, Rui Alberto Madeira Macedo; Miranda, J. M.; Gonçalves, L. M.This work reports the development and test of an energy harvester (few centimetres sized) designed to power the miliwatts required in submersible monitoring systems, that uses water movements as energy source. The device was fabricated with moulded materials (epoxy resin and silicone), using additive manufacturing for mould fabrication. The device was characterized with movements from 0.1 Hz to 0.4 Hz, and the ...