Electric Ireland is the supply division of the Electricity Supply Board, the former monopoly electricity company in Ireland. The company now operates in an open market competing for the supply of retail electricity to residential customers. Other major suppliers are Airtricity and, more recently, Bord Gáis Energy. The business was known as ESB Customer Supply and ESB Independent Energy before 4 April 2011. The brand was a transitional one; in January 2012, all references to ESB were dropped and it is simply known as Electric Ireland. Wikipedia.
Rodriguez-Martin D.,Polytechnic University of Catalonia |
Sama A.,Polytechnic University of Catalonia |
Perez-Lopez C.,Polytechnic University of Catalonia |
Catala A.,Polytechnic University of Catalonia |
And 2 more authors.
Expert Systems with Applications | Year: 2013
Analysis of human body movement is an important research area, specially for health applications. In order to assess the quality of life of people with mobility problems like Parkinson's disease o stroke patients, it is crucial to monitor and assess their daily life activities. The main goal of this work is the characterization of basic activities using a single triaxial accelerometer located at the waist. This paper presents a novel postural detection algorithm based in SVM methods which is able to detect and identify Walking, Stand, Sit, Lying, Sit to Stand, Stand to sit, Bending up/down, Lying from Sit and Sit from Lying transitions with a sensitivity of 97% and specificity of 84% with 2884 postures analyzed from 31 healthy volunteers. Parameters and models found have been tested in another dataset from Parkinson's disease patients, achieving results of 98% of sensitivity and 78% of specificity in postural transitions. The proposed algorithm has been optimized to be easily implemented in real-time system for on-line monitoring applications. © 2013 Elsevier Ltd. All rights reserved.
Lowe S.A.,Electric Ireland |
Lowe S.A.,National University of Ireland |
OLaighin G.,Electric Ireland |
OLaighin G.,National University of Ireland |
Medical Engineering and Physics | Year: 2014
The electronic monitoring of human health behaviour using computer techniques has been an active research area for the past few decades. A wide array of different approaches have been investigated using various technologies including inertial sensors, Global Positioning System, smart homes, Radio Frequency IDentification and others. It is only in recent years that research has turned towards a sensor fusion approach using several different technologies in single systems or devices. These systems allow for an increased volume of data to be collected and for activity data to be better used as measures of behaviour. This change may be due to decreasing hardware costs, smaller sensors, increased power efficiency or increases in portability. This paper is intended to act as a reference for the design of multi-sensor behaviour monitoring systems. The range of technologies that have been used in isolation for behaviour monitoring both in research and commercial devices are reviewed and discussed. Filtering, range, sensitivity, usability and other considerations of different technologies are discussed. A brief overview of commercially available activity monitors and their technology is also included. © 2013 IPEM.
Zhao L.,Electric Ireland |
Healy J.J.,National University of Ireland, Maynooth |
Sheridan J.T.,Electric Ireland
Applied Optics | Year: 2013
The numerical approximation of the linear canonical transforms (LCTs) is important in modeling coherent wave field propagation through first-order optical systems and in many digital signal processing applications. The continuous LCTs are unitary, but discretization can destroy this property. We present a sufficient condition on the sampling rates chosen in the discretization to ensure unitarity.We discuss the various subsets of the unitary matrices examined in this paper that have been proposed elsewhere. We offer a proof of the existence of all of the unitary matrices we discuss. We examine the consequences of these results, particularly in relation to the use of discrete transforms in iterative phase retrieval applications. © 2013 Optical Society of America.
Liu S.,Electric Ireland |
Hennelly B.M.,National University of Ireland |
Sheridan J.T.,Electric Ireland
Optical Engineering | Year: 2012
In this paper, we propose a method for the numerical simulation of optical double random phase encoding (DRPE). This method is based on a discrete model of the DRPE system that retains the properties of its optical counterpart and takes into account the capacity of DRPE to spread a signal's energy in both the space and the spatial frequency domains. Discrete versions of two narrowband lossless diffusers are created to simulate their analogue optical counterparts and their bandwidths control how much the energy of the input signal is spread in both the space and spatial frequency domains as it passes through the system. The limiting case, when complete aliasing (maximum overlap) takes place, is also discussed in relation to our method. In this case, we show our method reduces to a purely numerical encryption procedure which can, nonetheless, be decrypted perfectly. Simulation results are presented to demonstrate the feasibility of the proposed technique. © 2012 Society of Photo-Optical Instrumentation Engineers (SPIE).
Rahman M.,SFI Strategic Research Cluster in Solar Energy Conversion |
Rahman M.,Electric Ireland |
MacElroy J.M.D.,SFI Strategic Research Cluster in Solar Energy Conversion |
Dowling D.P.,Electric Ireland
Journal of Nanoscience and Nanotechnology | Year: 2011
The production of hydrogen from water (called "water splitting"), utilises sunlight as an energy source (solar-hydrogen) in a photoelectrochemical (PEC) solar cell, is a promising source of green energy. In this work, a PEC was used, for evaluating the photoactivity of a thin film TiO 2 based photoanode by measuring photocurrent (which is comparable to hydrogen production rate by water splitting process in PEC). The main focus of this work is to study the effect of the TiO 2 nanosurface and bulk properties on the photoresponse properties of the photoanode. The TiO 2 coatings (360-400 nm) were deposited using a closed field reactive magnetron sputtering system. The structure and morphology of the TiO 2 coatings were systematically altered by varying the deposition pressure between 5×10 -4 to 1×10 -2 mbar. The properties of the deposited nano-coatings were determined using Ellipsometry, SEM, AFM, profilometry, XPS, Raman and X-ray diffraction (XRD). Coating properties were correlated with the light absorption and photocurrent performance which were evaluated using UV-Vis spectroscopy and tri-electrode potentiostat measurements respectively. It was concluded from this study that the coating deposition pressure has a pronounced effect on the TiO 2 photoanode properties leading to a significant enhancement in the photoactivity in PEC cell. Over a six fold increase in photocurrent at applied potential 0 V was observed for TiO 2 photoanode prepared at 4×10 -3 mbar as compared to 5×10 -4 mbar. A correlation has been established between the deposition pressure, nano surface morphology and bulk properties, UV-Vis light absorbance and bandgap value, and the consequently higher (i) photocurrent density, (ii) negative flat band, and (iii) open circuit potential measured in Photoelectrochemical (PEC) cell. Copyright © 2011 American Scientific Publishers. All rights reserved.
Reilly D.,Dublin Institute of Technology |
Duffy A.,Dublin Institute of Technology |
Willis D.,Electric Ireland |
Conlon M.,Dublin Institute of Technology
Energy and Buildings | Year: 2013
Recent European legislation (Energy Efficiency Directive) has allocated some responsibility for residential end use energy efficiency to energy supply companies. In order to overcome data and modelling limitations associated with statistical and engineering modelling approaches to energy efficiency and renewable energy retrofit measures, energy suppliers and policy-makers often use simplified methods with limited data requirements to assess dwellings. One approach employed is an asset rating method (ARM); a standardised approach to residential energy demand estimation which is outlined in ISO EN 13790 (Energy Performance of Buildings Directive). Although it is a simplified method which industry is well-equipped to deliver, it is time-consuming to apply ARMs to the large domestic customer bases of energy suppliers. A small per-dwelling time saving will result in significant overall efficiencies for these users. This study examines the effect that reducing input data requirements of the ARM has on the accuracy of the methodology and comments on the trade-off between model simplification and accuracy. We find that it is possible to maintain a high degree of accuracy (∼95%) with 20 fewer variables than the baseline model. This is equivalent to almost 40% fewer variables than in the full model and represents a significant saving in effort. © 2013 Elsevier B.V. All rights reserved.
Cohen E.,Intel Corporation |
Cohen E.,Electric Ireland |
Jakobson C.,Intel Corporation |
Ravid S.,Intel Corporation |
Ritter D.,Electric Ireland
Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium | Year: 2010
A 60 GHz 32 element bidirectional phased-array TX/RX chip with a 2 bit phase shifter and IF converter to/from 12GHz, using 90nm CMOS process, is described. The array features 12.5 dB gain, noise figure (NF) of 11 dB, IP1dB of -17dbm for RX, and total output Psat of +8dBm for TX, drawing 390 mA from a 1.3-V supply. The RMS amplitude and phase error of the phase shifter is 0.8dB and 5° max respectively from 57 to 66 GHz. The paper emphasizes the flip-chip assembly technology selected and its impact on performance, and the phase and amplitude errors resulted by physical impairments such as the finite isolation between different chains. Special test structures were designed to measure bump isolation and insertion loss (IL). The designed architecture together with the compact layout results in a die area of 14.5mm2 for the full array. To our knowledge, this is the first report on a large bidirectional 60 GHz array, with the lowest reported chip power consumption and size. © 2010 IEEE.
Liu S.,Electric Ireland |
Gleeson M.R.,Electric Ireland |
Guo J.,Electric Ireland |
Sheridan J.T.,Electric Ireland
Applied Physics B: Lasers and Optics | Year: 2010
Several studies of the time varying photon absorption effects, which occur during the photo-initiation process in photopolymer materials, have been presented. Three primary mechanisms have been identified: (i) the dye absorption, (ii) recovery, and (iii) bleaching. Based on an analysis of these mechanisms, the production of primary radicals can be physically described and modelled. In free radical photo-polymerization systems, the excited dye molecules induce the production of the primary radicals, R•, which is a key factor in determining how much monomer is polymerized. This, in turn, is closely related to the refractive index modulation formed during holographic recording. In this article, by modifying the composition of a polyvinylalcohol/acrylamide based photopolymer material, i.e. excluding any co-initiator, the photo-kinetic behaviour of the material is greatly simplified. In this way, the rate constant of intersystem crossing, kst, in going from the excited singlet state dye to the excited triple state dye can be determined. kst is then available to be applied in a full model of the photo-initiation process making it possible to accurately predict the time varying concentration of primary radicals generated during exposure. © Springer-Verlag 2010.
Kinsella C.E.,Trinity College Dublin |
O'Shaughnessy S.M.,Trinity College Dublin |
Deasy M.J.,Trinity College Dublin |
Duffy M.,Electric Ireland |
Robinson A.J.,Trinity College Dublin
Applied Energy | Year: 2014
This project involves the development of a rototype electrical generator for delivering and storing small amounts of electricity. Power is generated using the thermoelectric effect. A single thermoelectric generator (TEG) is utilised to convert a small portion of the heat flowing through it to electricity. The electricity produced is used to charge a single rechargeable 3.3. V lithium-iron phosphate battery. This study investigates methods of delivering maximum power to the battery for a range of temperature gradients across the thermoelectric module. The paper explores load matching and maximum power point tracking techniques. It was found that, for the TEG tested, a SEPIC DC-DC converter was only beneficial for temperature gradients less than 100 °C across the TEG. At a temperature gradient of 150 °C, the effective resistance of the battery was close to the internal resistance of the TEG. For temperature gradients in excess of 100. °C a DC-DC converter is not suggested and a simple charge protection circuit is sufficient. © 2013 Elsevier Ltd.
News Article | November 5, 2014
Nest announced a partnership today with Electric Ireland to provide its smart thermostat for free to customers who sign a two-year contract with the utility. Tony Fadell, chief executive of Nest, confirmed the new partnership on stage today at the Web Summit in Dublin. “This is huge,” he said. “We think this is a huge announcement that could change Ireland.” Details of the partnership were not immediately available. Fadell said that Electric Ireland, which has 1.5 million customers, would be distributing the thermostat. Fadell dropped the news during a conversation about how being acquired by Google had changed Nest. He said that Google’s resources had allowed Nest to expand internationally much faster than it could have on its own.