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Aziz, Omer. "A pervasive body sensor network for monitoring post-operative recovery". Thesis, Imperial College London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516553.
Pełny tekst źródłaEljamaly, Omar. "Low-power wireless body area sensor network communication sub-systems". Thesis, University of Surrey, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479515.
Pełny tekst źródłaŠtrbíková, Tatiana. "Výzkum efektivnosti lokalizačních algoritmů s kotevními body". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218276.
Pełny tekst źródłaKim, Saim [Verfasser]. "A Body Sensor Network for Fluid Management during Sport / Saim Kim". Aachen : Shaker, 2015. http://d-nb.info/1080764097/34.
Pełny tekst źródłaStucki, Eric Thomas. "Medium Access Control and Networking Protocols for the Intra-Body Network". Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1182.pdf.
Pełny tekst źródłaXiao, Shuo Electrical Engineering & Telecommunications Faculty of Engineering UNSW. "Transmission power control in body-wearable sensor devices for healthcare monitoring". Publisher:University of New South Wales. Electrical Engineering & Telecommunications, 2008. http://handle.unsw.edu.au/1959.4/41104.
Pełny tekst źródłaJolly, James, Joe Bishop i Emilio Nanni. "Tracking the Human Body Via a Wireless Network of Pyroelectric Sensor Arrays". International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606242.
Pełny tekst źródłaThis paper describes the design and construction of a low-cost wireless sensor network (WSN) intended to track a human body walking upright through its physical topology. The network consists of arrays of pyroelectric infrared (PIR) sensors that can detect a moving body up to five meters away within a semicircular field of view. Data is gathered from these arrays and transmitted to a central processor that triangulates the body's position. Important characteristics of both the PIR sensors and the network's asynchronous nature are elaborated upon to illustrate how they affect the interpretation of the data.
Sheriff, Nathirulla. "Time Synchronization In ANT Wireless Low Power Sensor Network". Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Data- och elektroteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-15068.
Pełny tekst źródłaLi, Kejia. "Custom biomedical sensors for application in wireless body area networks and medical device integration frameworks". Diss., Kansas State University, 2012. http://hdl.handle.net/2097/14632.
Pełny tekst źródłaDepartment of Electrical & Computer Engineering
Steve Warren
The U.S. health care system is one of the most advanced and costly systems in the world. The health services supply/demand gap is being enlarged by the aging population coupled with shortages in the traditional health care workforce and new information technology workers. This will not change if the current medical system adheres to the traditional hospital-centered model. One promising solution is to incorporate patient-centered, point-of-care test systems that promote proactive and preventive care by utilizing technology advancements in sensors, devices, communication standards, engineering systems, and information infrastructures. Biomedical devices optimized for home and mobile health care environments will drive this transition. This dissertation documents research and development focused on biomedical device design for this purpose (including a wearable wireless pulse oximeter, motion sensor, and two-thumb electrocardiograph) and, more importantly, their interactions with other medical components, their supporting information infrastructures, and processing tools that illustrate the effectiveness of their data. The GumPack concept and prototype introduced in Chapter 2 addresses these aspects, as it is a sensor-laden device, a host for a local body area network (BAN), a portal to external integration frameworks, and a data processing platform. GumPack sensor-component design (Chapters 3 and 4) is oriented toward surface applications (e.g., touch and measure), an everyday-carry form factor, and reconfigurability. Onboard tagging technology (Chapters 5 and 6) enhances sensor functionality by providing, e.g., a signal quality index and confidence coefficient for itself and/or next-tier medical components (e.g., a hub). Sensor interaction and integration work includes applications based on the GumPack design (Chapters 7 through 9) and the Medical Device Coordination Framework (Chapters 10 through 12). A high-resolution, wireless BAN is presented in Chapter 8, followed by a new physiological use case for pulse wave velocity estimation in Chapter 9. The collaborative MDCF work is transitioned to a web-based Hospital Information Integration System (Chapter 11) by employing database, AJAX, and Java Servlet technology. Given the preceding sensor designs and the availability of information infrastructures like the MDCF, medical platform-oriented devices (Chapter 12) could be an innovative and efficient way to design medical devices for hospital and home health care applications.
Jobs, Magnus. "Design and Performance of Diversity based Wireless Interfaces for Sensor Network Nodes". Licentiate thesis, Uppsala universitet, Fasta tillståndets elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-198734.
Pełny tekst źródłaWISENET
WISEJET
Aulery, Alexis. "Architecture of Ultra Low Power Node for Body Area Network". Thesis, Lorient, 2016. http://www.theses.fr/2016LORIS419/document.
Pełny tekst źródłaWireless Body Sensor Network (WBSN) is a promising technology that can be used in a lot of application domains from health care to Human Machine Interface (HMI). The BoWI project ambition is to evaluate and design a WBSN that can be used in various applications with daily usage and accessible to the public. This necessitates to design a ultra-low power node that reach a day of use without discomfort for the user. The elected solution is to design a node that operates with the power budget similar to what can be provided by the state of the art of the energy harvesting. An Application Specific Integrated Circuit (ASIC) solution is privileged in order to meet the integration and low power constraints. Designing the dedicated architecture required a preliminary study at several level which are: a state of the art of the energy harvesting in order to determine the objective of energy/power budget of our system, A study of the usage of the system to determine and select typical application cases. A study of the algorithms to address the selected applications while considering the implementation viability of the solutions. The power budget objective is set to 100µW. The application selected are the posture recognition, the gesture recognition and the motion capture. The algorithmic solution proposed are a data-fusion based on an Extended Kalman FIlter (EKF) with the addition of a classification using Principal Component Analysis (PCA). The implementation tool used to design the architecture is an High Level Synthesis (HLS) solution. Implementation results mainly focus on the EKF since this is by far the most power consuming digital part of the system. Using a 28nm technology the power budget objective can be reached for the algorithmic part. A study of the top level management of all components of the node is done in order to estimate performances of the system in real application case. This is possible using an activity detection which dynamically estimates the computing load required and then save a maximum of energy while the node is still
Arrobo, Gabriel. "Improving the Throughput and Reliability of Wireless Sensor Networks with Application to Wireless Body Area Networks". Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4279.
Pełny tekst źródłaСеменець, В. В., В. С. Чумак, І. В. Свид, О. В. Зубков, О. В. Воргуль i Н. В. Бойко. "Designing the Structure of a General-Purpose Telemedicine Complex". Thesis, MC&FPGA, 2021. https://openarchive.nure.ua/handle/document/18108.
Pełny tekst źródłaRadwan, Mohsen Nada Ashraf. "Lightweight & Efficient Authentication for Continuous Static and Dynamic Patient Monitoring in Wireless Body Sensor Networks". Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39938.
Pełny tekst źródłaSalehi, Shahraki Ahmad. "Data flow and access control policy models in wireless body area network for healthcare". Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/101501/1/Ahmad_Salehi%20Shahraki_Thesis.pdf.
Pełny tekst źródłaHuang, Xin. "Multi-channel security protocols in personal networks". Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:e0217f2f-4b8f-4ee4-bb34-03cd03e6f68b.
Pełny tekst źródłaWang, Lu. "Implementation and Characterization of In-to-out Body Radio Transmissions for a Ruminal Bolus". Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/667187.
Pełny tekst źródłaActualmente, los nodos de sensores inalámbricos que residen en la cámara retículo-ruminal de los animales rumiantes para recolectar y transmitir datos bioclimáticos vitales están ganando un reconocimiento mundial en el manejo del ganado. Los beneficios de estos dispositivos, generalmente conocidos como bolos ruminales (de detección), incluyen la supervisión en tiempo real de la estabilidad del rumen, la prevención de pérdidas y la mejora del bienestar animal. Europa, con la mayor exportación de productos lácteos del mundo, ha sido pionera en la investigación y el desarrollo de bolos ruminales, la mayoría de los cuales trabajan en la banda de frecuencia de uso abierto y sin licencia dentro de las áreas científica e industrial de 433,05 MHz --- 434,79 MHz. Por otro lado, la creciente necesidad de aplicar bolos ruminales adecuados al monitoreo de la salud de los pequeños rumiantes, como son las ovejas y las cabras, presenta nuevos desafíos para los investigadores. Teniendo en cuenta que el tamaño corporal de estos rumiantes es mucho más pequeño en comparación con las vacas, es indispensable reducir el tamaño del bolo ruminal. Esto afecta no solo la eficiencia de la transmisión radio, sino también a la vida útil del pequeño bolo ruminal, como resultado de las limitaciones de espacio tanto para su componente de radiofrecuencia como para la unidad de potencia. Así pues, para los dispositivos utilizados en redes inalámbricas de área corporal, el consumo de energía suele estar estrechamente relacionado con las configuraciones del sistema dado que en el canal inalámbrico, no solo los elementos de transmisión, sino también influyen las características de transmisión de radiofrecuencia en el canal. Desafortunadamente, se han dedicado muy pocos esfuerzos de investigación al canal inalámbrico de bolos ruminales para pequeños rumiantes. Esta tesis doctoral se ha centrado en la búsqueda de una solución de radiofrecuencia para bolos ruminales destinados a pequeños rumiantes, que equilibrar las restricciones en la dimensión y el rendimiento del dispositivo. Dicha solución de radiofrecuencia ha consistido en la implementación de una pequeña antena que puede ajustarse a un pequeño bolo ruminal que funciona a 433 MHz y la caracterización del canal de transmisión de radiofrecuencia desde dentro del cuerpo con un pequeño bolo ruminal hacia fuera del cuerpo con un receptor externo. El trabajo de investigación comenzó con el diseño de una antena en espiral, con una estructura geométrica simple y personalizada para el entorno de propagación de radiofrecuencia deseado. Para investigar el enlace de radiofrecuencia entre la antena espiral y un receptor de referencia, se desarrollaron modelos teóricos de pérdida de trayectoria, mediante mediciones de laboratorio con líquidos de simulación de tejidos y análisis numérico con herramientas electromagnéticas computacionales tridimensionales. La viabilidad del enlace se verificó a nivel de sistema mediante el análisis de la estimación del enlace, utilizando los modelos teóricos de pérdida de trayectoria. Más allá de los estudios de canales teóricos, el canal de transmisión de radiofrecuencia real también presenta características que varían con el tiempo, algunas de las cuales están alineadas con los comportamientos biológicos de los animales rumiantes. Por lo tanto, los estudios in situ se llevaron a cabo con un animal con el rumen canulado situado en un establo. Se organizaron series de medición in vivo para investigar los comportamientos del canal de radiofrecuencia en los escenarios reales. Se desarrolló un patrón de pérdida de la trayectoria diurna a través de observaciones continuas basadas en un prototipo de un pequeño bolo ruminal y un receptor externo en el cuerpo. Se han demostrado las variaciones en la pérdida de la trayectoria en el canal de radiofrecuencia a lo largo del día y se han asociado con los estados digestivos ruminales. A partir de estos resultados, se ha propuesto un plan de reducción de potencia combinando el patrón de pérdida de la trayectoria diurna con el perfil de potencia existente del pequeño bolo ruminal.
In recent years, using indwelling wireless sensor nodes to collect and transmit essential bioclimatic data from the reticulo-ruminal chamber is gaining a global recognition in cattle management. Benefits of these devices, usually referred to as ruminal (sensing) boluses, include real-time supervisions of rumen stability, loss prevention, and improved animal welfare. As the major export party of global dairy products, Europe has been pioneering in the research and development of ruminal boluses, mostly working at the license-free industrial, scientific, and medical radio band of 433.05 MHz—434.79 MHz. Meanwhile, the increasing need to apply adequate ruminal boluses to monitor the health status of small ruminants, such as sheep and goats, is bringing new challenges to researchers. In consideration of the much smaller body size compared to cows, a notable downsizing of device form-factor is indispensable. However, this would affect not only the radiation efficiency but also the shelf life of the small ruminal boluses, since both the radio component and the power unit would benefit from abundant space. For devices used in wireless body area networks, power consumption is closely related to system configurations in view of the wireless channel: not only the radiation elements, but also the characteristics of the radio transmission channel. Unfortunately, very few research efforts have been dedicated to the wireless channel of ruminal boluses for small ruminants. This doctoral thesis focused on the search of a radio solution for ruminal boluses targeted on small ruminants, which could balance the restrictions in device dimension and performance. This radio solution consists of the implementation of a small antenna that could fit for a compact ruminal bolus working at 433 MHz, and the characterization of the in-to-out body radio transmission channel between a small ruminal bolus and an on-body receiver. A small spiral antenna was devised for integration into a ruminal bolus for small ruminants, taking into consideration of the other encapsulated components and mediums, as well as the in-body environment where the ruminal bolus resides. To investigate the radio link between the spiral antenna and a reference receiver, theoretical path loss models were developed, by means of both laboratory measurement in a tissue-simulating liquid and numerical analysis with 3-dimensional computational electromagnetic tools. Link viability was verified on a system level through link budget analysis, utilizing the theoretical path loss models. Beyond the theoretical channel studies, the actual radio transmission channel also exhibits time-varying features, some of which are aligned with biological behaviors of the ruminant animals. On-site studies were therefore carried out with a rumen-cannulated animal in a barn. Series of in vivo measurement campaigns were arranged to investigate the radio channel’s characteristics in the authentic scenarios. A diurnal path loss pattern was developed through continuous observations based on a prototype of the small bolus and an on-body receiver. Variances of path loss in the radio channel across the day were demonstrated and associated with ruminal digestive statuses. A power-reduction plan was then proposed combining the diurnal path loss pattern to the existing power profile of the small ruminal bolus.
Celik, Numan. "Wireless graphene-based electrocardiogram (ECG) sensor including multiple physiological measurement system". Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/15698.
Pełny tekst źródłaPersson, Anders. "Platform development of body area network for gait symmetry analysis using IMU and UWB technology". Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-39498.
Pełny tekst źródłaKarvonen, H. (Heikki). "Energy efficiency improvements for wireless sensor networks by using cross-layer analysis". Doctoral thesis, Oulun yliopisto, 2015. http://urn.fi/urn:isbn:9789526207506.
Pełny tekst źródłaTiivistelmä Tässä väitöskirjassa ehdotetaan protokollakerrosten välistä tietoa hyödyntäviä (cross-layer) lähestymistapoja, jotka mahdollistavat energiatehokkuuden parantamisen langattomissa sensori- ja kehoverkoissa. Työ kohdistuu fyysisen- ja kanavanhallintakerroksen välisen vuorovaikutuksen tutkimiseen. Fyysisen- ja kanavanhallintakerrosten analyysissä huomioidaan niiden tärkeimmät ominaisuudet ja tutkitaan kerrosten yhteistä energiatehokkuutta. Lisäksi kerrosten välistä analyysiä sovelletaan verkkotasolle tutkimalla hierarkkisen verkon energiatehokkuutta. Tavoitteena on energiatehokkuuden parantamisen mahdollistaminen siten, että merkittäviä muutoksia nykyisiin standardeihin ja tekniikoihin ei tarvitse tehdä hyödyntääkseen ehdotettuja menetelmiä. Tutkitut sensoriverkkoskenaariot hyödyntävät heräteradiota. Väitöskirjassa ehdotetaan geneerinen heräteradiopohjainen kanavanhallintaprotokolla (GWR-MAC), jolla parannetaan energiatehokkuutta vähentämällä turhaa kanavan kuuntelua. Kerrosten välinen malli kehitetään ensin yleisellä tasolla ja sen avulla tutkitaan virheenkorjauskoodisuhteen valinnan vaikutusta lähetysperiodin pituuteen ja energiatehokkuuteen tähtitopologiaan pohjautuvissa sensoriverkoissa. Sitten väitöskirjassa ehdotetaan energiatehokkuusmalli älykkäälle GWR-MAC -protokollaan perustuvalle hierarkkiselle arkkitehtuurille ja sen suorituskykyä vertaillaan toimintajaksoperiaatteella toimivaan lähestymistapaan. Eri kerroksilla olevien laitteiden väliset vuorovaikutukset huomioidaan heräteradio- ja toimintajaksoperiaatteella toimivien verkkojen suorituskykyvertailussa tapahtumatiheyden funktiona. Kolmas malli kohdistuu virheenkorjauskoodisuhteen ja datapaketin hyötykuorman pituuden energiatehokkuusvaikutuksen tutkimiseen IEEE 802.15.6 -standardiin perustuvissa langattomissa kehoverkoissa. Analyyttinen mallinnus ja Matlab-ohjelmiston avulla tuotetut simulointitulokset osoittavat selvästi energiatehokkuushyödyt, jotka saavutetaan ehdotettuja menetelmiä käyttämällä. Kehitetty GWR-MAC -protokolla, analyyttiset mallit ja tulokset ovat hyödynnettävissä sensori- ja kehoverkkotutkijoiden toimesta. Tämän väitöskirjan tavoitteena on myös näiden ajankohtaisten aiheiden jatkotutkimuksen stimulointi sekä lyhyen kantaman viestinnän kehityksen vauhdittaminen, sillä niillä on erittäin merkittävä rooli tulevaisuuden yhteen liittyvissä verkoissa, kuten esineiden ja asioiden Internetissä
Beddy, Kenneth Edem. "Introduzione agli elettrodi senza contatto per uso medico". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9620/.
Pełny tekst źródłaYoung, Alexander D. "Wireless realtime motion tracking system using localised orientation estimation". Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4637.
Pełny tekst źródłaSeyrafi, Aylar. "Developing Real Time Automatic Step Detection in the three dimensional Accelerometer Signal implemented on a Microcontroller System". Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1183.
Pełny tekst źródła+46-762453110 +46-462886970
Drira, Wassim. "Secure collection and data management system for WSNs". Phd thesis, Institut National des Télécommunications, 2012. http://tel.archives-ouvertes.fr/tel-00814664.
Pełny tekst źródłaLiu, Lingfeng. "Cooperative wireless channel characterization and modeling: application to body area and cellular networks". Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209722.
Pełny tekst źródłaIn the part of BANs, the dynamic narrowband on-body channels under body motions are modeled statistically on their temporal and spatial fading based on anechoic and indoor measurements. Common body scattering is observed to form inter-link correlation between links closely distributed and between links having synchronized movements of communication nodes. An analytical model is developed to explain the physical mechanisms of the dynamic body scattering. The on-body channel impacts to simple cooperation protocols are evaluated based on realistic measurements.
In the part of cellular networks, the cluster-level multi-link COST 2100 MIMO channel model is developed with concrete modeling concepts, complete parameterization and implementation methods, and a compatible structure for both single-link and multi-link scenarios. The cluster link-commonness is introduced to the model to describe the multi-link properties. The multi-link impacts by the model are also evaluated in a distributed MIMO system by comparing its sum-rate capacity at different ratios of cluster link-commonness.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Hegen, Peter. "Continuous Measurements of Core Body Temperature using Body Sensor Networks". Thesis, Linköpings universitet, Institutionen för datavetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-85465.
Pełny tekst źródłaMeharouech, Ali Amira. "Wireless body-to-body sensor networks : optimization models and algorithms". Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCB122/document.
Pełny tekst źródłaMotivated by the rising demand for remote and improved healthcare, while decreasing the cost of using network infrastructures to ensure time and data rate-constrained applications, Wireless Body Area Networks (WBANs) still form a strongly growing research field. Besides, engineers and researchers are investigating new solutions to supplement mobile communications through developing opportunities for cooperative WBANs. In this context, using network users themselves as relays could complement and extend existing infrastructure networks, while improving network capacity and promoting radio spectrum usage. Yet, network operators, that are already planning for the Internet of Things (IoT) and cloud computing technologies integration, should also think about this new possibility of creating a new type of mobile ad hoc network, where network users themselves are used as simplified ad hoc base stations, to fulfill the desire of sharing real-time information between colocated persons carrying body sensors. This emerging type of network is called Body-to-Body Network (BBN). In a BBN, a radio device situated on one person gathers the sensor data from the sensor nodes worn by that person, and transmit them to a transceiver situated on another person in the nearby area, in order to be processed or relayed to other BBN users. BBNs can find applications in a range of areas such as healthcare, team sports, military, entertainment, as well as exciting social networking experiences. Operating in the popular Industrial, Scientific and Medical (ISM) band, the communication links in a BBN will be heavily susceptible to interference between the different radio technologies sharing the limited radio spectrum. Thus, inter-body interference become an important concern for protocol design and quality of service for the BBN end user. Yet, higher layer MAC and networking mechanisms need to be in place to overcome this interference problem. To date, very few studies, that perform in-depth analysis of this type of body-centric scenario, exist. The interference problem in such distributed system, should be tackeled with distributed mechanisms, such as Game Theory. The decision makers in the game are either the WBANs/people forming the BBN or the network operators who control the inter-WBAN communicating devices. These devices have to cope with a limited transmission resource (ISM band) that gives rise to a conflict of interests. This thesis aims at exploring the opportunities to enable inter-WBAN communications by ensuring feasible sharing of the radio spectrum through two challenging research issues. First, mutual and cross-technology interference mitigation, and second, the design of a BBN specific routing protocol applied to an epidemic control application within mass gathering areas, such as the airport, as use case in this thesis. In a first phase, a game theoretical approach is proposed to resolve the distributed interference problem in BBNs. The Socially-aware Interference Mitigation (SIM) game performs twofold: at the WBAN stage, it allocates ZigBee channels to body sensors for intra-WBAN data sensing, and at the BBN stage, it allocates WiFi channels to mobile devices for inter-WBAN data transmitting and relaying. Two algorithms, BR-SIM and SORT-SIM, were developed to search for Nash equilibra to the SIM game. The first (BR-SIM) ensures best response solutions while the second (SORT-SIM) attempts to achieve tradeoff between sub-optimal solutions and short convergence time. Then, in order to highlight the social role of BBNs, the second part of this thesis is devoted to propose an epidemic control application tailored to BBNs, in indoor environment. This application implements a geographic routing protocol, that differentiates WBANs traffic and ensures real-time quarantine strategies. (...)
De, Jager Dirk. "Enabling technologies for distributed body sensor networks". Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/340622/.
Pełny tekst źródłaWegmüller, Marc Simon. "Intra-body communication for biomedical sensor networks". kostenfrei, 2007. http://e-collection.ethbib.ethz.ch/view/eth:29911.
Pełny tekst źródłaTabatabaei, Yazdi Ehsan. "Adaptive Resource Allocation for Wireless Body Sensor Networks". Thesis, University of Canterbury. Computer Science and Software Engineering, 2014. http://hdl.handle.net/10092/9828.
Pełny tekst źródłaKwasnicki, Richard Mark. "Body sensor networks : smart monitoring solutions after reconstructive surgery". Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/26899.
Pełny tekst źródłaThiemjarus, Surapa. "A Framework For Contextual Data Fusion in Body Sensor Networks". Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.499019.
Pełny tekst źródłaPascu, Tudor. "An inertial motion capture framework for constructing body sensor networks". Thesis, University of Sussex, 2015. http://sro.sussex.ac.uk/id/eprint/53567/.
Pełny tekst źródłaNguyen, Viet-Hoa. "Energy-efficient cooperative techniques for wireless body area sensor networks". Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S011/document.
Pełny tekst źródłaAmong various cooperative techniques aiming to reduce power consumption for transmissions between Wireless Body Area Networks (WBAN) and base stations, we present a new approach, named distributed max-dmin precoding (DMP), combining MIMO precoding techniques and relay communications. This protocol is based on the deployment of a virtual 2 × 2 max-dmin precoding over one source, one forwarding relay, both equipped with one antenna and a destination involving 2 antennas. In this context, two kinds of relaying, amplify and forward (AF) or decode and forward (DF) protocols, are investigated. The performance evaluation in terms of Bit-Error-Rate (BER) and energy efficiency are compared with non cooperative techniques and the distributed space time block code (STBC) scheme. Our investigations show that the DMP takes the advantage in terms of energy efficiency from medium transmission distances (after 10 meters). In order to maximise the energy efficiency, we propose a power allocation over the source and the relay. Thus, we derive the performance of our system, both for AF and DF, analytically. To further increase the performance of DF cooperative schemes, we also propose to design a new decoder at the destination that takes profit from side information, namely potential errors at the relay
Zincarelli, Nicola. "Applicazioni Wireless in Body Area Network". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9641/.
Pełny tekst źródłaYenuganti, Nagalaxmi. "Authentication in Wireless Body Area Networks (WBAN)". Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6442.
Pełny tekst źródłaJobs, Magnus. "Wireless Interface Technologies for Sensor Networks". Doctoral thesis, Uppsala universitet, Fasta tillståndets elektronik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-239400.
Pełny tekst źródłaChen, Lei. "Identifying the usage anomalies for ECG-based healthcare body sensor networks". Thesis, University of York, 2016. http://etheses.whiterose.ac.uk/17339/.
Pełny tekst źródłaBoudargham, Nadine. "Competent QoS-aware and energy efficient protocols for body sensor networks". Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCD007.
Pełny tekst źródłaBody Sensor Networks (BSNs) are formed of medical sensors that gather physiological and activity data from the human body and its environment, and send them wirelessly to a personal device like Personal Digital Assistant (PDA) or a smartphone that acts as a gateway to health care. Collaborative Body Sensor Networks (CBSNs) are collection of BSNs that move in a given area and collaborate, interact and exchange data between each other to identify group activity, and monitor the status of single and multiple persons.In both BSN and CBNS networks, sending data with the highest Quality of Service (QoS) and performance metrics is crucial since the data sent affects people’s life. For instance, the sensed physiological data should be sent reliably and with minimal delay to take appropriate actions before it is too late, and the energy consumption of nodes should be preserved as they have limited capacities and they are expected to serve for a long period of time. The QoS in BSNs and CBSNs largely depends on the choice of the Medium Access Control (MAC) protocols, the adopted routing schemes, and the efficient and accuracy of anomaly detection.The current MAC, routing and anomaly detection schemes proposed for BSNs and CBSNs in the literature present many limitations and open the door toward more research and propositions in these areas. Thus this thesis work focuses on three main axes. The first axe consists in studying and designing new and robust MAC algorithms able to address BSNs and CBSNs' challenges. Standard MAC protocols are compared in high traffic BSNs and a new MAC protocol is proposed for such environments; then an emergency aware MAC scheme is presented to address the dynamic traffic requirements of BSN in ensuring delivery of emergency data within strict delay requirements, and energy efficiency of nodes during regular observations; moreover, a traffic and mobility aware MAC scheme is proposed for CBSNs to address both traffic and mobility requirements for these networks.The second axe consists in proposing a thorough and efficient routing scheme suitable for BSNs and CBSNs. First, different routing models are compared for CBSNs and a new routing scheme is proposed in the aim of reducing the delay of data delivery, and increasing the network throughput and the energy efficiency of nodes. The proposed scheme is then adapted to BSN's requirements to become a solid solution for the challenges faced by this network. The third axe involves proposing an adaptive sampling approach that guarantees high accuracy in the detection of emergency cases, while ensuring at the same time high energy efficiency of the sensors.In the three axes, the performance of the proposed schemes is qualitatively compared to existing algorithms in the literature; then simulations are carried a posteriori with respect to different performance metrics and under different scenarios to assess their efficiency and ability to face BSNs and CBSNs' challenges.Simulation results demonstrate that the proposed MAC, routing and anomaly detection schemes outperform the existing algorithms, and present strong solutions that satisfy BSNs and CBSNs' requirements
Munoz, Torrico Max O. "Experimental characterisation of body-centric radio channels using wireless sensors". Thesis, Queen Mary, University of London, 2012. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8686.
Pełny tekst źródłaOrhan, Ibrahim. "Performance Monitoring and Control in Wireless Sensor Networks". Licentiate thesis, KTH, Data- och elektroteknik (Stängd 20130701), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-94545.
Pełny tekst źródłaQC 20120529
Moore, Levi M. "An Enhanced Body Area Network to Wirelessly Monitor Biometric Information". Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1512032652244955.
Pełny tekst źródłaPun, Sio Hang. "Electromagnetic sub-MHz modeling of multilayer human limb for the Galvanic Coupling type Intra-Body Communication". Thesis, University of Macau, 2011. http://umaclib3.umac.mo/record=b2543011.
Pełny tekst źródłaAkbar, Muhammad Sajjad. "Modelling, analysis and design of MAC and routing protocols for wireless body area sensor networks". Thesis, Bournemouth University, 2018. http://eprints.bournemouth.ac.uk/31049/.
Pełny tekst źródłaHabib, Carol. "Energy-efficient data collection and fusion in wireless body sensor networks for continuous health monitoring". Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD046.
Pełny tekst źródłaSeveral challenges exist in Wireless Body Sensor Networks such as the data collection and fusion especially that (1) wireless sensor nodes have limited energy, processing and memory resources, (2) the amount of periodically gathered data is huge, (3) the gathered data are characterized by a heterogeneous nature and (4) the data interpretation to ensure decision-support is influenced byseveral external factors such as the provided context information of the monitored person.In this thesis, the aforementioned challenges were tackled by proposing scientific aproaches. Firstly, an energy-efficient data collection technique is proposed. This technique targets the energy consumed by biosensor nodes for sensing and transmitting vital signs. It consists of a real-timesampling rate adaptation mechanism and a local detection system which are provided at the level of the nodes. Second, in order to perform a health assessment based on the collected data, a multisensor data fusion model is proposed. In this approach, the coordinator of the network performs anassessment of the patient's health condition based on the collected measurements of his/her vital signs. Such data is interpreted in a human-reasoning way and are characterized by ambiguity and imprecision. Thus, we propose to use a Fuzzy Inference System. Then, given that vital signs are highly correlated to the context of the monitored person, a context-aware multi-sensor data fusionmodel for health assessment is proposed. The person's context include his/her physical activity status, medical record and personal information. This information highly influences the interpretation of vital signs. Hesitant fuzzy sets are used to subjectively evaluate the intensity of the person's physical activities based on his/her personal information and the activity's characteristics. Finally, a specific healthcare monitoring application is targeted. A real-time stress detection and evaluation framework is proposed while taking into consideration the energy consumption constraint. Shimmer 3 GSR+ is used as a wireless sensor node to sense the Photoplethysmogram (PPG) signal and the skin conductance. An android mobile application is developed to extract from the PPG signal stress correlated vital signs such as the heart rate, the respiration rate and the blood pressure
Ali, Mohamad Jaafar. "Wireless body area networks : co-channel interference mitigation & avoidance". Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCB252/document.
Pełny tekst źródłaA Wireless Body Area Network (WBAN) is a short-range network that consists of a coordinator (Crd) and a collection of low-power sensors that can be implanted in or attached to the human body. Basically, WBANs can provide real-time patient monitoring and serve in various applications such as ubiquitous health-care, consumer electronics, military, sports, etc. [1]. As the license-free 2.4 GHz ISM band is widely used among WBANs and across other wireless technologies, the fundamental problem is to mitigate the resulting co-channel interference. Other serious problems are to extend the network lifetime and to ensure reliable transmission within WBANs, which is an urgent requirement for health-care applications. Therefore, in this thesis, we conduct a systematic research on a few number of research problems related to radio co-channel interference, energy consumption, and network reliability. Specifically, we address the following problems ranging from theoretical modeling and analysis to practical protocol design: • Intra-WBAN interference mitigation and avoidance • Cooperative inter-WBAN interference mitigation and avoidance • Non-cooperative inter-WBAN interference mitigation and avoidance • Interference mitigation and avoidance in WBANs with IoT Firstly, to mitigate the intra-WBAN interference, we present two mechanisms for a WBAN. The first is called CSMA to Flexible TDMA combination for Interference Mitigation, namely, CFTIM, which dynamically allocates time-slots and stable channels to lower the intra-WBAN interference. The second is called Interference Avoidance Algorithm, namely IAA that dynamically adjusts the superframe length and limits the number of channels to 2 to lower the intra-WBAN interference and save energy. Theoretically, we derive a probabilistic model that proves the SINR outage probability is lowered. Simulation results demonstrate the effectiveness and the efficiency of CFTIM and IAA in terms of lowering the probability of interference, extending network lifetime, improving throughput and reliability. Secondly, we address the problem of interference among cooperative WBANs through using orthogonal codes. Motivated by distributed time provisioning supported in IEEE 802.15.6 standard [2], we propose two schemes. The first is called Distributed Time Correlation Reference, namely, DTRC that provides each WBAN with the knowledge about which superframes overlap with each other. The second is called Orthogonal Code Allocation Algorithm for Interference Mitigation, namely, OCAIM, that allocates orthogonal codes to interfering sensors belonging to sensor interference lists (SILs), which are generated based on the exchange of power-based information among WBANs. Mathematically, we derive the successful and collision probabilities of frames transmissions. Extensive simulations are conducted and the results demonstrate that OCAIM can diminish the interference, improve the throughput and save the power resource. Thirdly, we address the problem of co-channel interference among non-cooperative WBANs through time-slot and channel hopping. Specifically, we propose two schemes that are based on Latin rectangles. The first is called Distributed Algorithm for Interference mitigation using Latin rectangles, namely, DAIL that allocates a single channel to a timeslot combination to each sensor to diminish inter-WBAN interference and to yield better schedules of the medium access within each WBAN. The second is called Channel Hopping for Interference Mitigation, namely, CHIM, which generates a predictable interference free transmission schedule for all sensors within a WBAN. CHIM applies the channel switching only when a sensor experiences interference to save the power resource. Furthermore, we present an analytical model that derives bounds on collision probability and throughput for sensors transmissions. (...)
Xu, Chuan. "Power-Aware Protocols for Wireless Sensor Networks". Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS498/document.
Pełny tekst źródłaIn this thesis, we propose a formal energy model which allows an analytical study of energy consumption, for the first time in the context of population protocols. Population protocols model one special kind of sensor networks where anonymous and uniformly bounded memory sensors move unpredictably and communicate in pairs. To illustrate the power and the usefulness of the proposed energy model, we present formal analyses on time and energy, for the worst and the average cases, for accomplishing the fundamental task of data collection. Two power-aware population protocols, (deterministic) EB-TTFM and (randomized) lazy-TTF, are proposed and studied for two different fairness conditions, respectively. Moreover, to obtain the best parameters in lazy-TTF, we adopt optimization techniques and evaluate the resulting performance by experiments. Then, we continue the study on optimization for the power-aware data collection problem in wireless body area networks. A minmax multi-commodity netflow formulation is proposed to optimally route data packets by minimizing the worst power consumption. Then, a variable neighborhood search approach is developed and the numerical results show its efficiency. At last, a stochastic optimization model, namely the chance constrained semidefinite programs, is considered for the realistic decision making problems with random parameters. A novel simulation-based algorithm is proposed with experiments on a real control theory problem. We show that our method allows a less conservative solution, than other approaches, within reasonable time
Broomé, Sofia. "Objectively recognizing human activity in body-worn sensor data with (more or less) deep neural networks". Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210243.
Pełny tekst źródłaInom ramen för uppsatsen testas hur väl rörelsemönster kan urskiljas ur accelerometerdatamed hjälp av den gren av maskininlärning som kallas djupinlärning; där djupa artificiellaneurala nätverk av noder funktionsapproximerar mappandes från domänen av sensordatatill olika fördefinerade kategorier av aktiviteter så som gång, stående, sittande eller liggande.Det finns ett intresse från den medicinska sidan att kunna mäta fysisk aktivitet objektivt,bland annat eftersom det visats att det finns en korrelation mellan ökade hälsorisker hosbarn och deras mängd daglig skärmtid. Denna typ av mätningar ska helst kunna göras medicke-invasiv utrustning till låg kostnad för att kunna göra större studier.Enklare nätverksarkitekturer samt återimplementeringar av bästa möjliga teknik inomområdet Mänsklig aktivitetsigenkänning (HAR) testas både på ett benchmarkingdataset ochpå egeninhämtad data i samarbete med Institutet för Folkhälsovetenskap på Karolinska Institutetoch resultat redovisas för olika val av möjliga klassificeringar och olika antal dimensionerper mätpunkt. De uppnådda resultaten (95% F1-score) på ett 4- och 5-klass-problem ärjämförbara med de bästa tidigare publicerade resultaten för aktivitetsigenkänning, vilket äranmärkningsvärt då då betydligt färre accelerometrar har använts här än i de åsyftade studierna.Förutom klassificeringsresultaten som redovisas bidrar det här arbetet med ett nyttinhämtat och kategorimärkt dataset; KTH-KI-AA. Det är jämförbart i antal datapunkter medspridda benchmarkingdataset inom HAR-området.
Mishra, Amitabh. "Modeling and Performance Evaluation of Wireless Body Area Networks for Healthcare Applications". University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439281330.
Pełny tekst źródłaKrishnamurthy, Ashwin Ganesh. "A Temperature Aware Asynchoronous Duty Cycle Protocol in Wireless Body Area Networks". University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1423580860.
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