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Hydrokinetic river (HKT) and photovoltaic (PV) panels systems are of the promising technologies to be used for remote rural electrification. In rural areas with access to water and solar resources, renewable generation is a promising option for electrification. This paper presents a study by two sizing methods for a stand-alone hybrid generation system integrating renewable energies (PV panels and...
This paper presents a wide-band RF shunt capacitive switch reconfigurable by means of electrically triggered Vanadium Oxide (VO2) phase transition to build a true-time delay (TTD) phase shifter. The concept of VO2-based reconfigurable shunt switch has been explained and experimentally demonstrated by designing, fabricating and characterizing an 819 μm long unit cell. The effect of bias voltage on...
Automated Dependent Surveillance — Broadcast (ADS-B) is an aircraft surveillance technology introduced as part of the US Next-Generation Air Transportation System (NextGen) initiative, in which aircraft broadcast their position based on satellite navigation (e.g. GPS). This information can then be used by other aircraft for traffic awareness and collision avoidance (TCAS), and by ground personnel...
This paper provides an analysis on the design, implementation and operation of Bi-Directional Switches (BDS) based on power semiconductor devices intended to replace Electro Mechanical Relays (EMR) in home appliances. Static and dynamic characterizations of test vehicles developed using different power device semiconductor technologies (TRIAC, Super Junction (SJ) MOSFET, IGBT_) are presented. At this...
In the era of Industry 4.0, Navantia is creating a Cyber-Physical System (CPS) for enabling automatic event detection in their pipe workshops. The enhanced identification of the numerous pipes of a shipyard and their traceability, from their origin and through their life-cycle, increase productive capacity and efficiency in the processes. The CPS proposed is able to transmit signals periodically,...
The abstract should appear at the top of the left-hand column Crop yield estimation are topics of interest in Latin-American countries, for farmers and government officers responsible of managing agricultural national policies. Besides, modern remote sensing methodologies to obtain these predictions represent important steps towards attaining the goals of precision agriculture for the 21st century...
This work was realized in the state of Guerrero, Mexico considered a high marginalization region in the country. The aim of this work was to generate the agricultural frontier and to determine the spatial distribution of maize and beans from satellite images using two classification algorithms. Of the entire state area (6,357, 781 hectares), 15.6% is occupied by agriculture. Of this, 244,585 hectares...
In this study, we focused on posting frequency and quality of exercise and physical activity content in Facebook. We sought to (1) explore the frequency of exercise and physical activity topics posted on specialized Breast Cancer channels and (2) evaluate the quality of these information. Evaluations of informations quality were performed independently by two sports and exercise experts, with previous...
Gallium Nitride (GaN) Enhancement-mode High-Electron-Mobility Transistors (EHEMTs) are promising devices for motor drives. Hence, ensuring and gaining insight into their ruggedness against Short-Circuit (SC) faults become essential. Thus, SC stresses (types I and II) are studied for the first time in commercial EHEMTs with similar on-state resistance (∼ 100 mΩ) and breakdown voltage (∼ 600 V). As...
In this work, a parametric electromagnetic (EM) modelling to develop Textile Integrated Circuits (TIC) is presented. Due to the necessity of having an accurate model to design TIC, avoiding the simulation of every filament which forms each yarn, a three-step characterisation of textile structures has been carried out. First, an ideal non-deformed model of the textile structure is represented, taking...
Radio Frequency Identification (RFID) security has not been properly handled in numerous applications, such as in public transportation systems. In this paper, a methodology to reverse engineer and detect security flaws is put into practice. Specifically, the communications protocol of an ISO/IEC 14443-B public transportation card used by hundreds of thousands of people in Spain was analyzed. By applying...
The pipes of a ship, which exist in heterogeneous typology and massive number, are one of the key elements in a shipyard, and their real-time monitoring constitutes a prospective Cyber-Physical System (CPS). Their improved location, from production and through their lifetime, can enhance shipyard productivity and safety. Navantia, one of the ten largest shipbuilders in the world, has improved its...
Two different structures as charge injectors for Floating Gate sensors are tested and analysed. First of all the theoretical charge injection processes are exposed and discussed. Secondly experimental results on both structures are presented. The experimental results allow to choose one of the structures as a candidate to be used embedded with the Floating Gate sensor system.
The numerous limitations of Electro Mechanical Relays (EMRs) for implementing Single-Pole, Single-Throw (SPST) Bi-Directional Switches (BDS) lead to new developments based on power semiconductor devices. This work gives an insight into the design and operation of BDSs based on the combination of unidirectional voltage blocking and bidirectional current conduction power devices, which aim to substitute...
The major disadvantage of Switched Reluctance Motors (SRMs) is their high torque ripples which limits their suitability to high performance Adjustable Speed Motor Drive (ASMD) applications. Various Instantaneous Torque Control (ITC) schemes have been developed to mitigate the SRM torque ripples. Among them, Torque Sharing Function (TSF) is a popular torque control method. Various conventional offline...
Since the emergence of more sophisticated interaction devices, Human Computer Interaction (HCI) science has extended in all forms, where Non-Verbal Communication (NVC) is one of added issues. In this context, the use of gestures (actions expressed by body, face, and/or hands) as a natural solution for applications that require hands-free and no touch interaction with computers has been suggested,...
Investigations of alternative Cu-based alloys were carried out as an opportunity for improvement on the quality, reliability and cost reduction. CuFeP and CuCr were successfully evaluated as an alternative leadframe alloys to the existing CuZr alloy on a wheel-speed magnetic sensor package through thermo-mechanical simulation, assembly and test performance, and reliability tests performance. Material...
Leadframe surface roughening improves adhesion between the mold compound and the leadframe. The improvement in adhesion will help eliminate delamination within the leadframe-mold compound interface. Two different surface treated leadframes were successfully evaluated through leadframe surface characterization, room and high temperature button shear performance, and leadframe-to-mold delamination performance...
Real-time indexing is a core component in retrieval systems and search services of any type in complex domains ranging from analytics to the Web of Things. As greatest challenges, the efficiency, scalability, and performance are central factors to consider at any level when designing or building an index. The multidimensional characteristics of data exposed by smart things interacting with the World...
Distillation is fundamental in Chemical Engineering. It is a highly complex and no-linear process. Therefore, developing intelligent control systems for distillation columns is challenging. These control techniques are based on previous knowledge and intuitive rules. In this work, several intelligent control strategies, such as Expert, Fuzzy (Mamdani and Sugeno) and Neural-Network Control are applied...
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