Magneto Inductive Communication And Localization
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Magneto Inductive Communication And Localization
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Author : Gregor Dumphart
language : en
Publisher: Logos Verlag Berlin GmbH
Release Date : 2022-06-15
Magneto Inductive Communication And Localization written by Gregor Dumphart and has been published by Logos Verlag Berlin GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-06-15 with Technology & Engineering categories.
Utilizing magnetic induction for wireless communication, wireless powering, passive relaying, and localization could enable massive wireless sensor applications with tiny nodes in challenging media, foremost biomedical in-body sensor networks. This work investigates the performance limits of these unique wireless systems with hardly any assumptions. As a foundation, a general system model and an interface to communication theory are developed. A major part of this work identifies two crucial magneto-inductive fading channels: that between randomly oriented coils and that caused by a nearby swarm of resonant passive relay coils. The analysis yields important technological implications. Based thereon, an investigation of wirelessly-powered in-body sensors is conducted, revealing their active and passive data transmission capabilities. Finally, a treatise of magneto-inductive node localization develops algorithms that perform near identified accuracy limits in theory and practice.
Localization And Posture Recognition Via Magneto Inductive And Relay Aided Sensor Networks
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Author : Henry Ruben Lucas Schulten
language : en
Publisher: Logos Verlag Berlin GmbH
Release Date : 2022-12-15
Localization And Posture Recognition Via Magneto Inductive And Relay Aided Sensor Networks written by Henry Ruben Lucas Schulten and has been published by Logos Verlag Berlin GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-15 with Technology & Engineering categories.
Body-centric wireless sensor networks are expected to enable future technologies such as medical in-body micro robots or unobtrusive smart textiles. These technologies may advance personalized healthcare as they allow for tasks such as minimally invasive surgery, in-body diagnosis, and continuous activity recognition. However, the localization of individual sensor nodes within such networks or the determination of the entire network topology still pose challenges that need to be solved. This work provides both theoretic and simulative insights to enable the required sub-millimeter localization accuracy of such sensors using magneto-inductive networks. It identifies inherent localization issues such as the asymmetry of the position estimation in magneto-inductive networks and outlines how such issues may be addressed by using passive relays or cooperation. It further proposes a novel approach to recognize the entire structure of a magneto-inductive network using simple impedance measurements and clusters of passive tags. This approach is evaluated extensively by simulation and experiment to demonstrate the feasibility of low-cost human body posture recognition.
Signals In The Soil
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Author : Abdul Salam
language : en
Publisher: Springer Nature
Release Date : 2020-08-16
Signals In The Soil written by Abdul Salam and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-16 with Technology & Engineering categories.
This book provides an in-depth coverage of the most recent developments in the field of wireless underground communications, from both theoretical and practical perspectives. The authors identify technical challenges and discuss recent results related to improvements in wireless underground communications and soil sensing in Internet of Underground Things (IOUT). The book covers both existing network technologies and those currently in development in three major areas of SitS: wireless underground communications, subsurface sensing, and antennas in the soil medium. The authors explore novel applications of Internet of Underground Things in digital agriculture and autonomous irrigation management domains. The book is relevant to wireless researchers, academics, students, and decision agriculture professionals. The contents of the book are arranged in a comprehensive and easily accessible format. Focuses on fundamental issues of wireless underground communication and subsurface sensing; Includes advanced treatment of IOUT custom applications of variable-rate technologies in the field of decision agriculture, and covers protocol design and wireless underground channel modeling; Provides a detailed set of path loss, antenna, and wireless underground channel measurements in various novel Signals in the Soil (SitS) testbed settings.
Posture Recognition For Fall Prevention With Low Complexity Uwb Wbans
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Author : Robert Heyn
language : en
Publisher: Logos Verlag Berlin GmbH
Release Date : 2023-04-04
Posture Recognition For Fall Prevention With Low Complexity Uwb Wbans written by Robert Heyn and has been published by Logos Verlag Berlin GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-04-04 with categories.
In our increasingly interconnected world, personalized and technology-assisted healthcare has become a rising trend. In an ageing society, technology enables new ways to care for and assist the elderly. Falls pose a major risk and cause of injuries for senior citizens. Technology-backed fall prevention thus has the potential to avoid severe injuries and further loss of independence, but requires continuous monitoring of the body posture in order to identify imminent falls. This work presents a system concept for a wearable wireless body area network (WBAN) for posture monitoring. It shows the principal feasibility of posture recognition from ultra-wideband (UWB) signals based on a large and diverse set of measurements. For a promising classifier-feature-combination, this work demonstrates how reliable posture recognition can be achieved with a limited number of body-mounted nodes, and analyzes its robustness towards potential pitfalls. It concludes with a proposal for a system implementation, and outlines its integration with existing and future aspects of personalized healthcare.
Internet Of Things Iciot 2019
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Author : Valerie Issarny
language : en
Publisher: Springer
Release Date : 2019-06-17
Internet Of Things Iciot 2019 written by Valerie Issarny and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-17 with Computers categories.
This book constitutes the proceedings of the International Conference on Internet of Things, ICIOT 2019, held as part of SCF 2019, in San Diego, CA, USA, in June 2019. The 8 full and 3 short papers presented in this volume were carefully reviewed and selected from 16 submissions. With the rapid advancements of mobile Internet, cloud computing and big data, device-centric traditional Internet of Things (IoT) is now moving into a new era which is termed as Internet of Things Services (IOTS). In this era, sensors and other types of sensing devices, wired and wireless networks, platforms and tools, data processing/visualization/analysis and integration engines, and other components of traditional IoT are interconnected through innovative services to realize the value of connected things, people, and virtual Internet spaces.
Electromechanical Transmitters For Elf Vlf Radio
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Author : Jarred S. Glickstein
language : en
Publisher: Springer Nature
Release Date : 2022-11-02
Electromechanical Transmitters For Elf Vlf Radio written by Jarred S. Glickstein and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-02 with Technology & Engineering categories.
This book describes a new, extremely low frequency (ELF)/ very low frequency (VLF) miniaturized transmitter concept, based on the mechanical motion of permanent magnets or electrets. The authors explain how utilizing the very high energy density of modern ferromagnetic and ferroelectric materials, such “electromechanical transmitters’’ can provide much higher field generation efficiency than conventional antennas, thus enabling practical ELF/VLF wireless communications links. The text begins with the fundamental challenges of such links and provides an historical overview of the attempts that have been made to address these challenges. It then focuses on the design and implementation of practical electromechanical ELF/VLF transmitters, which is an interdisciplinary subject that spans multiple research areas including electromagnetics, power electronics, control systems, and mechanical design. The authors also describe how such transmitters can be combined with receivers and signal processing algorithms to realize complete ELF/VLF links in challenging environments.
Extremely Loosely Coupled Near Field Magneto Inductive Ranging System
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Author : Vighnesh Gharat
language : en
Publisher:
Release Date : 2021
Extremely Loosely Coupled Near Field Magneto Inductive Ranging System written by Vighnesh Gharat and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
Low-Frequency (LF) magneto-quasistatic fields are less affected by multipath and shadow fading from obstacles when compared to the radio signals with higher frequencies, thus enabling better range estimation performance in strong multipath and Non-Line-of-Sight (NLOS) environments. Traditional near-field RFID systems based on inductive coupling suffer from the low range of operation and thus are limited in use cases. Although increasing the loop sizes increases the operational range of inductively coupled systems, this solution is not suitable where compact and easy-to-deploy systems are needed. Considering these aspects, a dual-frequency-RFID system for ranging and positioning based on Near-Field Magneto Inductive (NFMI) communication is presented. This system makes use of magnetic field strength for range estimation.The presented dual-frequency-RFID system relies on 125 kHz signal for range estimation while the data communication is handled at 433 MHz. The system consists of LF transmitters which generate magneto-quasistatic fields, active RFID tags which serve as LF receiver and Ultra-High-Frequency (UHF) transmitter, and UHF readers which capture the magnetic field strength information and identification data of the LF transmitters and the tags. The LF receiver on the tag measures the magnetic field strength which can be used for range estimation. This kind of architecture increases the use cases of the system and enables various range-estimation based application scenarios for the system such as access control, security, and real-time localization. As the presented work is a part of the ANRT CIFRE research partnership contract, it is carried out considering the industrial needs and constraints.The main contributions made by the presented work are:1. Modelization of inductive coupling in extremely loosely coupled systems2. Optimization of the system for large operational range and compactness3. Evaluation of the influence of tag orientation for a 3D antenna with simplified processing4. Evaluation of the influence of ferromagnetic materials on the signal produced by the system5. Evaluation of the performance of the presented system in terms of distance-estimation-based applications and comparing it with existing solutions based on UHF and Ultra-Wide Band (UWB) technologies.
Magnetic Communications
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Author : Erwu Liu
language : en
Publisher: Cambridge University Press
Release Date : 2023-12-31
Magnetic Communications written by Erwu Liu and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-12-31 with Technology & Engineering categories.
The ideal reference book providing all the information needed to fully understand magnetic communications in a self-contained source, written by experts in the field. This book offers a comprehensive introduction to magnetic communication using easy-to-understand language to explain concepts throughout and introduces the theory step by step with examples. A careful balance of combined theoretical and practical perspective is given throughout the book with interdisciplinary and multidisciplinary considerations for in-depth and diverse understanding. This book covers the background, developments, fundaments, antennas, channels, performance, protocol related to magnetic communications as well as applications that are of current interest, such as IoT, MIMO and wireless power transfer. The figures of merit within magnetic communication system components are included, demonstrating how to both model and analyze them. This book will be of great benefit to graduate students, researchers, and electrical engineers working in the fields of wireless communications and the internet of things.
International Conference On Innovative Computing And Communications
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Author : Deepak Gupta
language : en
Publisher: Springer Nature
Release Date : 2022-11-07
International Conference On Innovative Computing And Communications written by Deepak Gupta and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-07 with Technology & Engineering categories.
This book includes high-quality research papers presented at the Fifth International Conference on Innovative Computing and Communication (ICICC 2022), which is held at the Shaheed Sukhdev College of Business Studies, University of Delhi, Delhi, India, on February 19–20, 2022. Introducing the innovative works of scientists, professors, research scholars, students and industrial experts in the field of computing and communication, the book promotes the transformation of fundamental research into institutional and industrialized research and the conversion of applied exploration into real-time applications.
Principles Of Inductive Near Field Communications For Internet Of Things
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Author : Johnson I. Agbinya
language : en
Publisher: CRC Press
Release Date : 2022-09-01
Principles Of Inductive Near Field Communications For Internet Of Things written by Johnson I. Agbinya and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-01 with Technology & Engineering categories.
Near field communication devices and the emerging field of Internet of things require efficient short range communication techniques. Classical telecommunication theory however has so far focused on radiating electromagnetic signals which is more suited to terrestrial communication systems. Over the last decade however considerable research and applications of inductive methods have emerged as innovative approaches for secure short range communications by changing the paradigm of an established model of electromagnetic communications. We have witnessed the emergence of embedded inductive medical devices, magneto-inductive waveguides, inductive pots and cooking devices, magneto-inductive sensors, wireless power transfer, inductive hearing aids and the emerging inductive point-to-point communication specifically termed near-field communication (NFC) as used in mobile phones and payment cards to name a few. While there exist a large set of distributed methods and algorithms detailing the design and performances of such applications, a significant gap is observed as a lack of detailed collection of the methods in one place which could be easily understood and used quickly by someone seeking to apply the methods.In this book this missing gap is filled with the required details and the theory of near field communication systems including both the radiating and reactive (energy coupling) near-field systems in addition to the well known far field radiation techniques. The book details the fundamental expressions and design methods which facilitate the creation of near field devices and equipment including embedded biomedical implants. The book contains recent advances in inductive communications, performance, limitations and a collection of applications. It also lays a strong foundation for the application of inductive methods for creating Internet of Things systems.