Download or read book Energy Management for Battery powered Reconfigurable Computing Platforms and Networks written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Portable embedded systems have become increasingly popular over the past few years. Personal digital assistants, pocket computers, mobile phones, digital cameras and GPS based portable navigation systems are some of the examples. These systems have inherent limitations in terms of their energy requirements, size, weight, cost and processing power. Since batteries are finite sources of energy, with varying and limited opportunities of getting recharged, it becomes necessary to manage the battery energy aggressively. In this work we concentrate on Portable Reconfigurable Computing Platforms which either have Field Programmable Gate Arrays (FPGA) as their main processing element or have a heterogeneous mix of embedded processors, voltage scalable processors and FPGAs. For these systems we propose and study different architectures, methodologies and algorithms which enable us to make better decisions for achieving a trade-off between battery consumption and performance. We first focus on platform level battery-efficiency and then by extending the tools and methodologies developed for individual platforms to a network of these systems we have studied network wide battery-efficiency for a sensor network. As a part of platform level work we present a technique in which a single task is executed using a combination of cores instead of a single one, and show that by running a combination of cores it is possible to prolong the battery life or the number of calculations performed, depending upon the goal. We also introduce the concept of reconfigurable tiles and present a methodology which is based on the idea that by changing the active area of an FPGA significant battery savings are possible. Further, we present an iterative, heuristic algorithm for battery aware task sequencing and implementation-option (design-point) allocation for single and multiple processing unit execution. We have developed and used, as a hardware testbed, a portable reconfigurable platform called iPACE-V1, which we will also describe briefly. We have also studied the effects of battery-efficient execution on a sensor network with reconfigurable nodes and have shown that the total network lifetime can be increased many times by the use of RC based nodes as compared to traditional fixed processor based nodes. Finally, we present some directions where this work can be extended.

Download or read book Energy Management of Multi Component Computing Platforms Under Energy Constraints written by Rizwana Begum and published by . This book was released on 2017 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy management is a problem of all types of computing devices. For example, short battery life is a complaint of today's mobile device users, while high operational costs of cooling and supplying power are the concerns of modern datacenters. It is inevitable that all modern multi-component devices manage energy in order to address these concerns. While, a majority of previous research efforts focus on single components such as CPU and DRAM, only a few optimize the energy consumption of multiple components--without understanding the interactions among these components. Core and memory systems consume a majority of total power consumption in today's computing devices. While Dynamic Voltage and Frequency Scaling (DVFS) for cores is a well established technique to make energy-performance trade-offs, Dynamic Frequency Scaling (DFS) is emerging as a promising technique for memory systems. This dissertation presents a holistic approach that optimizes performance of a system capable of core DVFS and DRAM DFS under energy constraints in a coordinated fashion. The dissertation introduces a relative energy constraint, inefficiency, that is independent of applications and agnostic to devices unlike existing absolute energy constraints. Our cross-component performance and energy models understand the interaction between core and DRAM. The dissertation introduces new relative and adaptive energy management algorithms that use the models to choose optimal frequency settings under given inefficiency budget. In addition to the constraints, the system also needs metrics to provide insights into how well the system is tuning. This dissertation introduces the concept of Power-Agility and a set of novel metrics to measure Power-Agility--ability of the systems to select and transition to the efficient power settings dynamically during the application execution. In the end, the dissertation characterizes and compares the power-agility of the proposed energy management approach to a state-of-the-art server system managing core DVFS and DRAM DFS under performance constraints.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Embedded Systems written by Kiyofumi Tanaka and published by BoD – Books on Demand. This book was released on 2012-03-16 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, embedded systems - computer systems that are embedded in various kinds of devices and play an important role of specific control functions, have permeated various scenes of industry. Therefore, we can hardly discuss our life or society from now onwards without referring to embedded systems. For wide-ranging embedded systems to continue their growth, a number of high-quality fundamental and applied researches are indispensable. This book contains 13 excellent chapters and addresses a wide spectrum of research topics of embedded systems, including parallel computing, communication architecture, application-specific systems, and embedded systems projects. Embedded systems can be made only after fusing miscellaneous technologies together. Various technologies condensed in this book as well as in the complementary book "Embedded Systems - Theory and Design Methodology", will be helpful to researchers and engineers around the world.

Download or read book Design and Analysis of Distributed Energy Management Systems written by Tatsuya Suzuki and published by Springer Nature. This book was released on 2020-01-21 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides key ideas for the design and analysis of complex energy management systems (EMS) for distributed power networks. Future distributed power networks will have strong coupling with (electrified) mobility and information-communication technology (ICT) and this book addresses recent challenges for electric vehicles in the EMS, and how to synthesize the distributed power network using ICT. This book not only describes theoretical developments but also shows many applications using test beds and provides an overview of cutting edge technologies by leading researchers in their corresponding fields. Describes design and analysis of energy management systems; Illustrates the synthesis of distributed energy management systems based on aggregation of local agents; Discusses dependability issues of the distributed EMS with emphasis on the verification scheme based on remote-operational hardware-in-the-loop (HIL) simulation and cybersecurity.

Download or read book Power Aware Computing written by Robert Graybill and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of portable and autonomous computing systems, power con sumption has emerged as a focal point in many research projects, commercial systems and DoD platforms. One current research initiative, which drew much attention to this area, is the Power Aware Computing and Communications (PAC/C) program sponsored by DARPA. Many of the chapters in this book include results from work that have been supported by the PACIC program. The performance of computer systems has been tremendously improving while the size and weight of such systems has been constantly shrinking. The capacities of batteries relative to their sizes and weights has been also improv ing but at a rate which is much slower than the rate of improvement in computer performance and the rate of shrinking in computer sizes. The relation between the power consumption of a computer system and it performance and size is a complex one which is very much dependent on the specific system and the technology used to build that system. We do not need a complex argument, however, to be convinced that energy and power, which is the rate of energy consumption, are becoming critical components in computer systems in gen eral, and portable and autonomous systems, in particular. Most of the early research on power consumption in computer systems ad dressed the issue of minimizing power in a given platform, which usually translates into minimizing energy consumption, and thus, longer battery life.

Download or read book GreenEdge New Perspectives to Energy Management and Supply in Mobile Edge Computing written by Guoming Tang and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 5G technology has been commercialized worldwide and is expected to provide superior performance with enhanced mobile broadband, ultra-low latency transmission, and massive IoT connections. Meanwhile, the edge computing paradigm gets popular to provide distributed computing and storage resources in proximity to the users. As edge services and applications prosper, 5G and edge computing will be tightly coupled and continuously promote each other forward. Embracing this trend, however, mobile users, infrastructure providers, and service providers are all faced with the energy dilemma. On the user side, battery-powered mobile devices are much constrained by battery life, whereas mobile platforms and apps nowadays are usually power-hungry. At the infrastructure and service provider side, the energy cost of edge facilities accounts for a large proportion of operating expenses and has become a huge burden. This book provides a collection of most recent attempts to tackle the energy issues in mobile edge computing from new and promising perspectives. For example, the book investigates the pervasive low-battery anxiety among modern mobile users and quantifies the anxiety degree and likely behavior concerning the battery status. Based on the quantified model, a low-power video streaming solution is developed accordingly to save mobile devices' energy and alleviate users' low-battery anxiety. In addition to energy management for mobile users, the book also looks into potential opportunities to energy cost saving and carbon emission reduction at edge facilities, particularly the 5G base stations and geo-distributed edge datacenters.

Download or read book Applied Reconfigurable Computing written by Kentaro Sano and published by Springer. This book was released on 2015-03-30 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 11th International Symposium on Applied Reconfigurable Computing, ARC 2015, held in Bochum, Germany, in April 2015. The 23 full papers and 20 short papers presented in this volume were carefully reviewed and selected from 85 submissions. They are organized in topical headings named: architecture and modeling; tools and compilers; systems and applications; network-on-a-chip; cryptography applications; extended abstracts of posters. In addition, the book contains invited papers on funded R&D - running and completed projects and Horizon 2020 funded projects.

Download or read book Integrated Energy Management for Wireless Sensor Network Applications written by Joseph Alan Sankman and published by . This book was released on 2014 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, there has been an explosion in the growth of wirelessly connected devices. The number of autonomous devices is expected to reach trillions in total. Autonomous devices range from home thermostats to industrial sensors. To route communication from these devices to the end-user, a base station is required. Collectively, the base station and autonomous devices form a wireless sensor network. However, the proliferation of wireless sensor networks has led to an unprecedented energy management crisis on two fronts. First is energy generation, for which establishing methods of self-powering are critically important since battery replacement is infeasible for the trillions of autonomous devices. The second is efficient power use by the base station. Efficient power delivery to the RF power amplifier (PA) is imperative, which dissipates a majority of base station power. Motivated by these core challenges, this dissertation presents techniques for energy management and harvesting to achieve self-powered operation and envelope tracking techniques for optimized power delivery to the base station RF PA. First, a reconfigurable energy management unit (EMU) is introduced. The EMU achieves unification of an energy source, energy storage, voltage regulation, and energy recycling for dynamic voltage scaling by implementing multi-directional energy flow control. A reconfigurable switching converter architecture is implemented to accommodate flexible voltage conversion and multi-directional energy flow. Furthermore, supercapacitors are employed to enhance operation lifetime. Second, a piezoelectric vibration energy harvester is developed to achieve self-powered operation. However, significant challenges remain unresolved with regard to harvesting from time-varying vibrations. To overcome these challenges, an adaptive impedance matching technique is proposed. To retain reasonable efficiency at low power levels, the controller is designed with nanopower circuits. Last, a switching-converter-only envelope modulator is developed to achieve efficient power delivery to the base station PA. Conventionally, a linear regulator is required to attain fast tracking, but is a significant source of efficiency degradation. To eliminate the linear regulator, a dual-phase switching converter with synchronized adaptive voltage tracking (SAVT) control is employed. SAVT control enables synchronization and fast hysteretic response for voltage tracking. To overcome the switching converter slew rate limit, a push-pull slew rate enhancer is implemented.

Download or read book Modeling of Battery powered Computer Systems to Enable Dynamic Power Management written by Peng Rong and published by . This book was released on 2006 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Power Electronics and Energy Management for Battery Storage Systems written by Andrei Blinov and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The deployment of distributed renewable generation and e-mobility systems is creating a demand for improved dynamic performance, flexibility, and resilience in electrical grids. Various energy storages, such as stationary and electric vehicle batteries, together with power electronic interfaces, will play a key role in addressing these requests thanks to their enhanced functionality, fast response times, and configuration flexibility. For the large-scale implementation of this technology, the associated enabling developments are becoming of paramount importance. These include energy management algorithms; optimal sizing and coordinated control strategies of different storage technologies, including e-mobility storage; power electronic converters for interfacing renewables and battery systems, which allow for advanced interactions with the grid; and increase in round-trip efficiencies by means of advanced materials, components, and algorithms. This Special Issue contains the developments that have been published b researchers in the areas of power electronics, energy management and battery storage. A range of potential solutions to the existing barriers is presented, aiming to make the most out of these emerging technologies.

Download or read book Smart Sensors Networks written by Fatos Xhafa and published by Academic Press. This book was released on 2017-06-14 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smart Sensors Networks: Communication Technologies and Intelligent Applications explores the latest sensor and sensor networks techniques and applications, showing how networked wireless sensors are used to monitor and gather intelligence from our surrounding environment. It provides a systematic look at the unique characteristics of wireless sensor networks through their usage in a broad range of areas, including healthcare for the elderly, energy consumption, industrial automation, intelligent transportation systems, smart homes and cities, and more. The book shows how sensor-networks work and how they are applied to monitor our surrounding environment. It explores the most important aspects of modern sensors technologies, providing insights on the newest technologies and the systems needed to operate them. Readers will find the book to be an entry point for understanding the fundamental differences between the various sensor technologies and their use in for different scenarios. Indexing: The books of this series are submitted to EI-Compendex and SCOPUS - Presents numerous specific use-cases throughout, showing practical applications of concepts - Contains contributions from leading experts around the globe - Collects, in one place, the latest thinking on an emerging topic - Addresses the security and privacy issues inherent in sensor deployment

Download or read book Energy Harvesting Systems written by Tom J. Kaźmierski and published by Springer Science & Business Media. This book was released on 2010-11-01 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kinetic energy harvesting converts movement or vibrations into electrical energy, enables battery free operation of wireless sensors and autonomous devices and facilitates their placement in locations where replacing a battery is not feasible or attractive. This book provides an introduction to operating principles and design methods of modern kinetic energy harvesting systems and explains the implications of harvested power on autonomous electronic systems design. It describes power conditioning circuits that maximize available energy and electronic systems design strategies that minimize power consumption and enable operation. The principles discussed in the book will be supported by real case studies such as battery-less monitoring sensors at water waste processing plants, embedded battery-less sensors in automotive electronics and sensor-networks built with ultra-low power wireless nodes suitable for battery-less applications.

Download or read book Field Programmable Logic and Applications written by Peter Y.K. Cheung and published by Springer Science & Business Media. This book was released on 2003-08-27 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 13th International Conference on Field-Programmable Logic and Applications, FPL 2003, held in Lisbon, Portugal in September 2003. The 90 revised full papers and 56 revised poster papers presented were carefully reviewed and selected from 216 submissions. The papers are organized in topical sections on technologies and trends, communications applications, high level design tools, reconfigurable architecture, cryptographic applications, multi-context FPGAs, low-power issues, run-time reconfiguration, compilation tools, asynchronous techniques, bio-related applications, codesign, reconfigurable fabrics, image processing applications, SAT techniques, application-specific architectures, DSP applications, dynamic reconfiguration, SoC architectures, emulation, cache design, arithmetic, bio-inspired design, SoC design, cellular applications, fault analysis, and network applications.

Download or read book Electric Vehicle Battery Systems written by Sandeep Dhameja and published by Elsevier. This book was released on 2001-10-30 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electric Vehicle Battery Systems provides operational theory and design guidance for engineers and technicians working to design and develop efficient electric vehicle (EV) power sources. As Zero Emission Vehicles become a requirement in more areas of the world, the technology required to design and maintain their complex battery systems is needed not only by the vehicle designers, but by those who will provide recharging and maintenance services, as well as utility infrastructure providers. Includes fuel cell and hybrid vehicle applications.Written with cost and efficiency foremost in mind, Electric Vehicle Battery Systems offers essential details on failure mode analysis of VRLA, NiMH battery systems, the fast-charging of electric vehicle battery systems based on Pb-acid, NiMH, Li-ion technologies, and much more. Key coverage includes issues that can affect electric vehicle performance, such as total battery capacity, battery charging and discharging, and battery temperature constraints. The author also explores electric vehicle performance, battery testing (15 core performance tests provided), lithium-ion batteries, fuel cells and hybrid vehicles. In order to make a practical electric vehicle, a thorough understanding of the operation of a set of batteries in a pack is necessary. Expertly written and researched, Electric Vehicle Battery Systems will prove invaluable to automotive engineers, electronics and integrated circuit design engineers, and anyone whose interests involve electric vehicles and battery systems.* Addresses cost and efficiency as key elements in the design process* Provides comprehensive coverage of the theory, operation, and configuration of complex battery systems, including Pb-acid, NiMH, and Li-ion technologies* Provides comprehensive coverage of the theory, operation, and configuration of complex battery systems, including Pb-acid, NiMH, and Li-ion technologies

Download or read book MOBICOM written by and published by . This book was released on 1999 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 16th International Conference on Hybrid Intelligent Systems HIS 2016 written by Ajith Abraham and published by Springer. This book was released on 2017-02-21 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest research in hybrid intelligent systems. It includes 57 carefully selected papers from the 16th International Conference on Hybrid Intelligent Systems (HIS 2016) and the 8th World Congress on Nature and Biologically Inspired Computing (NaBIC 2016), held on November 21–23, 2016 in Marrakech, Morocco. HIS - NaBIC 2016 was jointly organized by the Machine Intelligence Research Labs (MIR Labs), USA; Hassan 1st University, Settat, Morocco and University of Sfax, Tunisia. Hybridization of intelligent systems is a promising research field in modern artificial/computational intelligence and is concerned with the development of the next generation of intelligent systems. The conference’s main aim is to inspire further exploration of the intriguing potential of hybrid intelligent systems and bio-inspired computing. As such, the book is a valuable resource for practicing engineers /scientists and researchers working in the field of computational intelligence and artificial intelligence.