Branding/Logomark minus Citation Combined Shape Icon/Bookmark-empty Icon/Copy Icon/Collection Icon/Close Copy 7 no author result Created with Sketch. Icon/Back Created with Sketch. Match!
Alfredo Martins
International Student Exchange Programs
83Publications
9H-index
386Citations
Publications 83
Newest
Published on May 15, 2019in PLOS ONE 2.78
Hugo Ribeiro7
Estimated H-index: 7
,
Alfredo Martins9
Estimated H-index: 9
+ 11 AuthorsC. Marisa R. Almeida24
Estimated H-index: 24
Source Cite
Michael Bleier1
Estimated H-index: 1
(University of Würzburg),
Carlos Almeida15
Estimated H-index: 15
+ 9 AuthorsKlaus Shcilling16
Estimated H-index: 16
(University of Würzburg)
Abstract. The project Viable Alternative Mine Operating System (iVAMOS!) develops a novel underwater mining technique for extracting inland mineral deposits in flooded open-cut mines. From a floating launch and recovery vessel a remotely-operated underwater mining vehicle with a roadheader cutting machine is deployed. The cut material is transported to the surface via a flexible riser hose. Since there is no direct intervisibility between the operator and the mining machine, the data of the sens...
1 Citations Source Cite
Published on Apr 16, 2019in Sensors 3.03
Fábio Azevedo1
Estimated H-index: 1
,
André Dias7
Estimated H-index: 7
+ 5 AuthorsEduardo A. Silva21
Estimated H-index: 21
The effective monitoring and maintenance of power lines are becoming increasingly important due to a global growing dependence on electricity. The costs and risks associated with the traditional foot patrol and helicopter-based inspections can be reduced by using UAVs with the appropriate sensors. However, this implies developing algorithms to make the power line inspection process reliable and autonomous. In order to overcome the limitations of visual methods in the presence of poor light and n...
Source Cite
Published on Jan 1, 2019in IEEE Access 4.10
Ramon Suarez-Fernandez10
Estimated H-index: 10
,
Davide Grande + 3 AuthorsClaudio Rossi12
Estimated H-index: 12
Source Cite
Published on Nov 1, 2018
Alfredo Martins9
Estimated H-index: 9
(P.PORTO: Polytechnic Institute of Porto),
José Almeida3
Estimated H-index: 3
(P.PORTO: Polytechnic Institute of Porto)
+ 1 AuthorsEduardo Silva8
Estimated H-index: 8
(P.PORTO: Polytechnic Institute of Porto)
This paper presents the perception system designed for the underwater mine exploration UNEXMIN robot.This autonomous underwater vehicle was designed in the context of the European H2020 UNEXMIN project to explore flooded underground minesThe presented work addresses the sensor choice and placement options, the characterization of the system with results obtained in test tank and on field missions in mines. The perception software and computational architecture is also discussed with details on i...
Source Cite
Published on Oct 1, 2018 in IROS (Intelligent Robots and Systems)
José Miguel Almeida7
Estimated H-index: 7
(International Student Exchange Programs),
Alfredo Martins9
Estimated H-index: 9
(International Student Exchange Programs)
+ 10 AuthorsAndreas Nüchter32
Estimated H-index: 32
(University of Würzburg)
This paper presents the positioning, navigation and awareness (PNA) system developed for the Underwater Robotic Mining System of the !VAMOS! project [1]. It describes the main components of the !VAMOS! system, the PNA sensors in each of those components, the global architecture of the PNA system, and its main subsystems: Position and Navigation, Realtime Mine Modeling, 3D Virtual reality HMI and Real-time grade system. General results and lessons learn during the first mining field trial in Lee ...
Source Cite
Published on Oct 1, 2018
Davide Grande (Polytechnic University of Milan), Luca Bascetta14
Estimated H-index: 14
(Polytechnic University of Milan),
Alfredo Martins9
Estimated H-index: 9
This paper presents the modeling and simulation of a spherical autonomous underwater vehicle. The robot was developed under the European Union H2020 innovation action UNEXMIN for the exploration of underground flooded mines, and is a small spherical robot with thrusters and an internal pendulum for pitch control. A model of the vehicle is presented, initially without the pendulum, then an extended formulation is derived accounting for a multibody dynamic description of the system. Experimental i...
Source Cite
Published on Oct 1, 2018
Nuno Viana (International Student Exchange Programs), Pedro Guedes2
Estimated H-index: 2
(International Student Exchange Programs)
+ 5 AuthorsEduardo Silva8
Estimated H-index: 8
(International Student Exchange Programs)
In this work an acoustic tag detector was developed for the integration in a mobile robotic fish tracking architecture. The present paper presents both the developed system and preliminary results with particular emphasis of the developed solution with the tag manufacturer receiver. The work has been developed in the context of the MYTAG Portuguese RD project, addressing the study and characterisation of the European flounder migrations in the northern estuarine environments of Portugal. The det...
Source Cite
Published on Oct 1, 2018 in IROS (Intelligent Robots and Systems)
Alfredo Martins9
Estimated H-index: 9
(P.PORTO: Polytechnic Institute of Porto),
José Almeida3
Estimated H-index: 3
(P.PORTO: Polytechnic Institute of Porto)
+ 15 AuthorsSergio Dominguez2
Estimated H-index: 2
(UPM: Technical University of Madrid)
This paper describes the UX-l underwater mine exploration robotic system under development in the context of the UNEXMIN project. UNEXMIN is an international innovation action funded under the EU H2020 program, aiming to develop new technologies and services allowing the exploration of flooded underaround mines. The system is comprised by the UX-l robot prototype, launch and recovery system, command and control subsystem and a data management and post-processing computational infrastructure. The...
Source Cite
123456789