Aurora Gil-de-Castro

Bio: Aurora Gil-de-Castro is an academic researcher from University of Córdoba (Spain). The author has contributed to research in topics: LED lamp & Harmonics. The author has an hindex of 14, co-authored 60 publications receiving 576 citations. Previous affiliations of Aurora Gil-de-Castro include Leonardo.

Building lighting automation through the integration of DALI with wireless sensor networks

Abstract: This paper focuses on the integration of Digital Addressable Lighting Interface (DALI) devices in wireless sensor networks. Since different manufacturers usually deal with one aspect of building automation - e.g. heating ventilation and air conditioning, lighting control, different kinds of alarms, etc. - final building automation system has different subsystems which are finally taken to an integrated building management system. The cost of this process is consequently increased due to additional hardware investment. Our main purpose is to provide the end consumer with an economical fully centralized system in which home appliances are managed by an IEEE 802.15.4-based wireless sensor network. Not only is it necessary to focus on the initial investment, but maintenance and energy consumption costs must also be considered. This paper explains the developed system along with a brief introduction to usual building automation protocols. Finally it presents future work in this field.

LED street lighting: A power quality comparison among street light technologies

Abstract: High-pressure sodium lamps are currently the main lamps used in public lighting. However, the possibility of using high-power light emitting diode (LEDs) for street lighting is growing continuously due to their greater energy efficiency, robustness, long life and light control. The aim of this paper is to study the power quality of high-power lighting networks based on LED and high-pressure sodium lamps. Both electromagnetic and dimmable electronic ballasts, which can dim the lamp output smoothly and uniformly, have been used connected to high-pressure sodium lamps. High-pressure sodium lamps connected to electronic equipment have been tested with different arc power levels using dimming on a 230 V power supply. The study presented in this paper is completely based on measurements, including harmonic currents in the frequency range up to 150 kHz for all the technologies. The main results show a broadband spectrum in LED lamps which confirms other research in fluorescent lamps powered by high-frequency ball...

A study about harmonic interaction between devices

Abstract: This paper presents an analysis of current emission from low-voltage appliances in the frequency range from 2 to 150 kHz. The current to an electric vehicle is measured for different connection of other devices (LED lamp, microwave oven, TV) showing the presence of primary and secondary emission. The paper shows that the presence of a neighboring device can have a strong influence on the emission.

A Survey on Mobile Augmented Reality With 5G Mobile Edge Computing: Architectures, Applications, and Technical Aspects

Abstract: The Augmented Reality (AR) technology enhances the human perception of the world by combining the real environment with the virtual space. With the explosive growth of powerful, less expensive mobile devices, and the emergence of sophisticated communication infrastructure, Mobile Augmented Reality (MAR) applications are gaining increased popularity. MAR allows users to run AR applications on mobile devices with greater mobility and at a lower cost. The emerging 5G communication technologies act as critical enablers for future MAR applications to achieve ultra-low latency and extremely high data rates while Multi-access Edge Computing (MEC) brings enhanced computational power closer to the users to complement MAR. This paper extensively discusses the landscape of MAR through the past and its future prospects with respect to the 5G systems and complementary technology MEC. The paper especially provides an informative analysis of the network formation of current and future MAR systems in terms of cloud, edge, localized, and hybrid architectural options. The paper discusses key application areas for MAR and their future with the advent of 5G technologies. The paper also discusses the requirements and limitations of MAR technical aspects such as communication, mobility management, energy management, service offloading and migration, security, and privacy and analyzes the role of 5G technologies.

Distributed Illumination Control With Local Sensing and Actuation in Networked Lighting Systems

Abstract: We consider the problem of illumination control in a networked lighting system wherein luminaires have local sensing and actuation capabilities Each luminaire: 1) consists of a light-emitting diode (LED) based light source dimmable by a local controller; 2) is actuated based on sensing information from a presence sensor, that determines occupant presence, and a light sensor, that measures illuminance, within their respective fields of view; and 3) a communication module to exchange control information within a local neighborhood We consider distributed illumination control in such an intelligent lighting system to achieve presence-adaptive and daylight-integrated spatial illumination rendering The rendering is specified as target values at the light sensors, and under these constraints, a local controller has to determine the optimum dimming levels of its associated LED luminaire so that the power consumed in rendering is minimized The formulated optimization problem is a distributed linear programming problem with constraints on exchanging control information within a neighborhood A distributed optimization algorithm is presented to solve this problem and its stability and convergence are studied Sufficient conditions, in terms of parameter selection, under which the algorithm can achieve a feasible solution are provided The performance of the algorithm is evaluated in an indoor office setting in terms of achieved illuminance rendering and power savings

Integration of distributed generation in the power distribution network: The need for smart grid control systems, communication and equipment for a smart city — Use cases

Abstract: The exploitation of renewable energy resources poses great challenges regarding the manner in which they can be integrated into the modern electrical distribution infrastructure. To understand the difficulties of integration of Distributed Generation (DG) in electricity distribution network, the analyses and result of the effects on aspects of power quality are provided, as can be the problem of failure defects in networks and how DG grid connection affects voltage control at both medium-voltage (MV) and low-voltage (LV) levels. Results demonstrated that there was a communication system between all generators protective systems, a selective protective system, a tracking of perturbations system to isolate failure defects, and a phase control system between the generators and the network. Also synchronizing voltage regulation is crucial for guaranteeing the quality of the power supply. Currently, recent and modern technologies allow different services to share a single communications infrastructure while guaranteeing the required levels of security, reliability, and efficiency. This paper aims to provide a Smart City (SC) project, implemented in the city of Malaga, Spain, where the integration of the applications of Smart Grid (SG) and the Use Cases (UCs) for the different functionalities of SG has been developed. The SC architecture proposed envisions a hierarchical, distributed, and autonomous structure to address the challenge of smart distribution grids. As a result of this project, new levels of standardization of languages and protocols and new interconnection functions will be required. These functions will allow smart devices to recognize each other so that they can reconnect in case of failure regardless of the state of the network topology. In conclusion, renewable energy sources (RES) can be optimally integrated into the distribution grid. Generation can approach consumption through the installation of photovoltaic (PV) panels and mini-wind generators, with the reuse of electrical infrastructure.