Дисертації з теми "Sensor Designing"
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1
Wang, Ke, and 黃岢. "Designing authenication scheme for wireless sensor networks." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42841732.
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Wang, Ke. "Designing authenication scheme for wireless sensor networks." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42841732.
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Shixian, Wen. "Designing a centralized, self-organized wireless sensor network." Thesis, Mittuniversitetet, Avdelningen för informations- och kommunikationssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-25512.
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Бугрим, І. В., О. О. Винокуров, and П. В. Галкін. "Approaches to Designing a Wireless Sensor Network Node." Thesis, NURE, MC&FPGA, 2019. https://mcfpga.nure.ua/conf/2019-mcfpga/10-35598-mcfpga-2019-007.
Повний текст джерелаАнотація:
The object of the research is the hardware component for building a test platform for wireless sensor networks. The aim of the work is to develop a software and hardware test platform for wireless sensor networks. As a result of the analysis, the node structures, wireless sensor network modules, CC2530 peripherals were analyzed. A module based on the CC2530 PA was chosen as the hardware. Given to optimize the structure of the node for as one of approach to designing a wireless sensor network node. Also given report about difference in approach to designing nodes and uses areas.
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Gujrati, Sumeet. "Designing and analyzing an event service for sensor networks." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/1099.
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Ustek, Dilan. "Designing zooming interactions for small displays with a proximity sensor." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62656.
Повний текст джерелаАнотація:
Small, high resolution touchscreens open new possibilities for wearable and embedded applications, but are a mismatch for interactions requiring appreciable movement on the screen surface. For example, multi-touch or large-scroll zooming actions suffer from occlusion and difficulties in accessing or resolving large zoom ranges or selecting small targets.
Meanwhile, emerging technologies have the potential to combine many capabilities, e.g., touch- and proximity-sensitivity, flexibility and transparency. A current challenge is to develop interaction techniques that can exploit the capabilities of these new materials to solve interaction challenges presented by trends such as miniaturization and wearability such as tiny screens that only one finger of one hand can fit on.
To this end, Zed-zooming exploits the capabilities of emerging near-proximity sensors to address these problems, by mapping finger height above a control surface to image size. The EZ-Zoom technique adds the pseudohaptic illusion of an elastic finger-screen connection, by exploiting non-linear scaling functions to provide a usage metaphor.
In a two-part user study, we compared EZ-Zoom to touchscreen standard pinch-to-zoom on smartphone and smartwatch screens, and found (a) a significant improvement in task time and preference for the smallest screen (equivalent task time for the smartphone); and (b) that the illusion improved users' reported sense of control, provided cues about the interaction's spatial extent and dynamics, and made the interaction more natural. From our experience with the study, we conclude requirements for the development of proximity sensors in order to afford such interactions.
Our work goes on to reflect on how zed-zooming can be incorporated into seamless interaction tasks. We aim to identify some characteristics of a zooming interaction that would need to be considered when designing a complete one, and explore how these characteristics play into a complete and usable zooming interaction.Science, Faculty of
Computer Science, Department of
Graduate
7
Kulathumani, Vinodkrishnan. "Network Abstractions for Designing Reliable Applications Using Wireless Sensor Networks." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211560039.
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Sang, Lifeng. "Designing Physical Primitives For Secure Communication In Wireless Sensor Networks." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1267816202.
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Семенець, В. В., В. С. Чумак, І. В. Свид, О. В. Зубков, О. В. Воргуль, and Н. В. Бойко. "Designing the Structure of a General-Purpose Telemedicine Complex." Thesis, MC&FPGA, 2021. https://openarchive.nure.ua/handle/document/18108.
Повний текст джерелаАнотація:
Taking into account modern trends, the analysis of the construction principles of telemadic systems, networks and complexes is presented in the work. The general structure of providing telemedicine services is developed. Structures of realization of portable and mobile telemedicine complexes are offered. Infocommunication systems and networks for implementation in mobile telemedicine complexes are analyzed. The advantages of using the sensor mobile body area network of the IEEE 802.15.6 WBAN standard in mobile telemedicine complexes are justified.
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Noh, Kyoung Lae. "New advances in designing energy efficient time synchronization schemes for wireless sensor networks." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1493.
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Lim, Choon Wee. "Designing an electronic readout for a directional micro electrical-mechanical (MEMS) sound sensor." Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/10639.
Повний текст джерелаАнотація:
Locating sound sources has been of interest to the military, especially in locating sniper fire in an unconventional operational theater. Today, there are such systems to localize snipers, but they are bulky, heavy and do not employ networking, which can greatly improve the performance in terms of accuracy and reliability. Hence, there is a need to design a system that is small, compact, distributed, and reliable. In this project, an electronic readout system was designed and integrated for a directional Micro Electro-Mechanical (MEMS) sound sensor that is being developed in Naval Postgraduate School, Physics department. It is composed of the hardware and software components to process sensor signals such as amplitudes and frequencies, to aid in determining the direction of the sound. To keep the system small and compact, the electronics readout was integrated to the sensor system on the same platform. Such electrical and mechanical system integration minimizes the parasitic capacitances and enhances the sensitivity. The measured sensor response using the integrated electronics showed an improvement of nearly a factor of four larger as compared to that using an external circuit board.
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Müller, Lars [Verfasser], and W. [Akademischer Betreuer] Stork. "From Context to Content: Designing Sensor Support for Reflective Learning / Lars Müller. Betreuer: W. Stork." Karlsruhe : KIT-Bibliothek, 2014. http://d-nb.info/1064504213/34.
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Candemir, Erkan. "Dimensioning and designing a testing rig for impact loading on beams :." Thesis, Linnaeus University, School of Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-6526.
Повний текст джерелаАнотація:
This report is product of a degree project accomplishment at Linnaeus University in Växjö, Sweden. It is about designing a testing rig for impact loading of beams for laboratory use.
The specimens to be used were 1 meter long 8 standard profiles given in the project assignment. The first step in this project was to design and dimension a testing rig which is suitable for laboratory use. The height and the maximum mass were chosen according to laboratory use conditions and safety issues. The second step was designing the fixation for the test sample to the testing rig without any dislocation by the impact load. The third step was to measure the falling height of the mass onto the test sample and measure the deflection of the beam. In this case, the precision of falling height was not very important but measuring the deflection of the beam with the highest possible precision was most important. A measurement system is used considering this factor.
The project started with the idea of affecting the impact loads on the standard steel construction beams. The aim of this project is to design an impact loading testing rig which can be used for the purpose of laboratory experiments and compare the real results from the experiments with the theoretical results from the calculations.
In the project, Solid Works and AutoCAD software are often used both in the drawings and strength and stress analyses.
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Reinhardt, Andreas [Verfasser], Ralf [Akademischer Betreuer] Steinmetz, Adam [Akademischer Betreuer] Wolisz, and Matthias [Akademischer Betreuer] Hollick. "Designing Sensor Networks for Smart Spaces - Unified Interfacing and Energy-Efficient Communication between Wireless Sensor and Actuator Nodes / Andreas Reinhardt. Betreuer: Ralf Steinmetz ; Adam Wolisz ; Matthias Hollick." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2011. http://d-nb.info/1106113314/34.
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Panić, Goran [Verfasser], Rolf [Akademischer Betreuer] Kraemer, Theodor Heinrich [Akademischer Betreuer] Vierhaus, and Mile [Akademischer Betreuer] Stojcev. "A methodology for designing low power sensor node hardware systems / Goran Panić ; Rolf Kraemer, Theodor Heinrich Vierhaus, Mile Stojcev." Cottbus : BTU Cottbus - Senftenberg, 2015. http://d-nb.info/1114283398/34.
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Bae, Eunjin. "Musical hand shaker toward sustainable behavioral changes : Designing of persuasive interaction through emotion arousing." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-94183.
Повний текст джерелаАнотація:
Context. This paper aims to investigate the potential of sustainable interaction system by employing persuasive design process. Sustainable Human Computer Interaction community (HCI) strives to find effective ways to change human behavior toward pro-environment. The sustainable HCI community seems to propose ambient display interface as one of its major interaction methods, which have an impact in quiet and static surroundings. However, when it comes to crowded public places where public resources are heavily wasted, ambient interfaces hardly get people’s attention and provide timely information to people. Goals. The author proposes an embodied sound interface as an alternative in the crowded places. The embodied sound interface serves to alert people at the right moment in a fun and pleasant way to induce people to engage in an intended behavior spontaneously. A sensor system prototype embedding an embodied sound interface, musical hand shaker (MHS), was developed aiming at reducing the use of paper towels. The MHS is placed near the water tap in a restroom and it respond with a music to the hand shaking of the user in front of the MHS. The system encourages people to experience how easy it is to save paper towel and do a green activity in their daily life. Methods. This study is grounded on three HCI fields: ambient information systems, affective interaction, and persuasive technology. The MHS prototype went through the persuasive design process which includes iterative steps of prototype implementation and evaluation. This design process centered on the eight steps of design process and Fogg behavior model. The persuasive qualities of embodied sound interface such as understandability, recognition of the system goal, and persistency of raised awareness of sustainability were examined. Results. The final outdoor evaluation in the restroom of a mall confirmed the impact of the MHS on people’s habit of using paper towels as well as its effectiveness of persuasion. Since it is a pilot study, there remain some unresolved issues and open questions for researcher in HCI and psychology fields.
17
Clarke, Elizabeth Jane. "Understanding and designing sensors in Escherichia coli." Diss., Search in ProQuest Dissertations & Theses. UC Only, 2010. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3398874.
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Lu, Jiahui. "Designing wavefront sensors from liquid crystal microlenses." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.707989.
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Nesbitt, Keith V. "Designing multi-sensory displays for abstract data." Connect to full text, 2003. http://ses.library.usyd.edu.au/handle/2123/4135.
Повний текст джерелаАнотація:
Thesis (Ph. D.)--University of Sydney, 2003.Title from title screen (viewed April 6, 2009). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Information Technologies, Faculty of Science. Includes bibliographical references. Also available in print form.
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Nesbitt, Keith. "Designing multi-sensory displays for abstract data." Thesis, The University of Sydney, 2003. http://hdl.handle.net/2123/4135.
Повний текст джерелаАнотація:
The rapid increase in available information has lead to many attempts to automatically locate patterns in large, abstract, multi-attributed information spaces. These techniques are often called data mining and have met with varying degrees of success. An alternative approach to automatic pattern detection is to keep the user in the exploration loop by developing displays for perceptual data mining. This approach allows a domain expert to search the data for useful relationships and can be effective when automated rules are hard to define. However, designing models of the abstract data and defining appropriate displays are critical tasks in building a useful system. Designing displays of abstract data is especially difficult when multi-sensory interaction is considered. New technology, such as Virtual Environments, enables such multi-sensory interaction. For example, interfaces can be designed that immerse the user in a 3D space and provide visual, auditory and haptic (tactile) feedback. It has been a goal of Virtual Environments to use multi-sensory interaction in an attempt to increase the human-to-computer bandwidth. This approach may assist the user to understand large information spaces and find patterns in them. However, while the motivation is simple enough, actually designing appropriate mappings between the abstract information and the human sensory channels is quite difficult. Designing intuitive multi-sensory displays of abstract data is complex and needs to carefully consider human perceptual capabilities, yet we interact with the real world everyday in a multi-sensory way. Metaphors can describe mappings between the natural world and an abstract information space. This thesis develops a division of the multi-sensory design space called the MS-Taxonomy. The MS-Taxonomy provides a concept map of the design space based on temporal, spatial and direct metaphors. The detailed concepts within the taxonomy allow for discussion of low level design issues. Furthermore the concepts abstract to higher levels, allowing general design issues to be compared and discussed across the different senses. The MS-Taxonomy provides a categorisation of multi-sensory design options. However, to design effective multi-sensory displays requires more than a thorough understanding of design options. It is also useful to have guidelines to follow, and a process to describe the design steps. This thesis uses the structure of the MS-Taxonomy to develop the MS-Guidelines and the MS-Process. The MS-Guidelines capture design recommendations and the problems associated with different design choices. The MS-Process integrates the MS-Guidelines into a methodology for developing and evaluating multi-sensory displays. A detailed case study is used to validate the MS-Taxonomy, the MS-Guidelines and the MS-Process. The case study explores the design of multi-sensory displays within a domain where users wish to explore abstract data for patterns. This area is called Technical Analysis and involves the interpretation of patterns in stock market data. Following the MS-Process and using the MS-Guidelines some new multi-sensory displays are designed for pattern detection in stock market data. The outcome from the case study includes some novel haptic-visual and auditory-visual designs that are prototyped and evaluated.
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Nesbitt, Keith. "Designing multi-sensory displays for abstract data." University of Sydney, 2003. http://hdl.handle.net/2123/4135.
Повний текст джерелаАнотація:
Doctor of PhilosophyThe rapid increase in available information has lead to many attempts to automatically locate patterns in large, abstract, multi-attributed information spaces. These techniques are often called data mining and have met with varying degrees of success. An alternative approach to automatic pattern detection is to keep the user in the exploration loop by developing displays for perceptual data mining. This approach allows a domain expert to search the data for useful relationships and can be effective when automated rules are hard to define. However, designing models of the abstract data and defining appropriate displays are critical tasks in building a useful system. Designing displays of abstract data is especially difficult when multi-sensory interaction is considered. New technology, such as Virtual Environments, enables such multi-sensory interaction. For example, interfaces can be designed that immerse the user in a 3D space and provide visual, auditory and haptic (tactile) feedback. It has been a goal of Virtual Environments to use multi-sensory interaction in an attempt to increase the human-to-computer bandwidth. This approach may assist the user to understand large information spaces and find patterns in them. However, while the motivation is simple enough, actually designing appropriate mappings between the abstract information and the human sensory channels is quite difficult. Designing intuitive multi-sensory displays of abstract data is complex and needs to carefully consider human perceptual capabilities, yet we interact with the real world everyday in a multi-sensory way. Metaphors can describe mappings between the natural world and an abstract information space. This thesis develops a division of the multi-sensory design space called the MS-Taxonomy. The MS-Taxonomy provides a concept map of the design space based on temporal, spatial and direct metaphors. The detailed concepts within the taxonomy allow for discussion of low level design issues. Furthermore the concepts abstract to higher levels, allowing general design issues to be compared and discussed across the different senses. The MS-Taxonomy provides a categorisation of multi-sensory design options. However, to design effective multi-sensory displays requires more than a thorough understanding of design options. It is also useful to have guidelines to follow, and a process to describe the design steps. This thesis uses the structure of the MS-Taxonomy to develop the MS-Guidelines and the MS-Process. The MS-Guidelines capture design recommendations and the problems associated with different design choices. The MS-Process integrates the MS-Guidelines into a methodology for developing and evaluating multi-sensory displays. A detailed case study is used to validate the MS-Taxonomy, the MS-Guidelines and the MS-Process. The case study explores the design of multi-sensory displays within a domain where users wish to explore abstract data for patterns. This area is called Technical Analysis and involves the interpretation of patterns in stock market data. Following the MS-Process and using the MS-Guidelines some new multi-sensory displays are designed for pattern detection in stock market data. The outcome from the case study includes some novel haptic-visual and auditory-visual designs that are prototyped and evaluated.
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Bennett, Erin Kay. "Re-designing Greenstone for Seniors." The University of Waikato, 2008. http://hdl.handle.net/10289/2278.
Повний текст джерелаАнотація:
The golden generation have a wealth of experience and knowledge from throughout their lifetimes that younger generations wish to retain. In our technology filled world an obvious means of collecting this information is electronically. Digital library col- lections are increasingly used by libraries and large institutions to record their large amounts of information but they can also be used for personal collections. Seniors are often willing and keen to impart their years of experience upon people of the younger generation but time is not always on their side as they grow older. Throughout a lifetime a person could collect large amounts of papers, diaries, pho- tos and media but the time it takes to organise these documents can be long and exhausting and the person's health is not always at its best in old age. Greenstone is a suite of software for creating digital libraries, which are organised collections of documents. Greenstone has the ability to distribute collections either using a server or CD-ROM, and provides advanced searching and organization tools. While Greenstone is a versatile and useful tool in creating digital collections, its in- terface is not designed for senior users. Seniors are commonly perceived to have more physical and mental disadvantages as they get older. These disadvantages can dramatically affect how usable seniors find a piece of software. The aim of this thesis is to investigate how usable the current Greenstone interface is for use by seniors and to re-design the interface so that Greenstone may be more easily used by senior users. This thesis focuses upon what types of documents and descriptive data seniors would like to include in a collection about their life. This is to ascertain exactly what parts of the interface must be improved when it comes to metadata and classifiers. The results of this investigation also helped in the creation of a customised metadata set for senior users use.
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Bross, Stephanie. "Senior Living and Health: Designing for a Multigenerational Community." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1522420176287392.
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Mota, Rui Manuel Nunes. "Designing for the senses through food design and psychophysiology." Master's thesis, ISA/UL, 2018. http://hdl.handle.net/10400.5/17971.
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Taylor, Morgan. "Bringing the outdoors in: designing a mobile sensory garden for children with sensory integration disorders in elementary schools." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/35453.
Повний текст джерелаАнотація:
Master of Landscape ArchitectureDepartment of Landscape Architecture/Regional and Community Planning
Anne E. Beamish
The purpose of this research was to develop a mobile sensory garden to help children with Sensory Integration Disorders. Sensory Integration (SI) is how an individual processes sensory information. Issues with sensory integration can lead to behavioral disorders, which can cause difficulties with social-emotional skills, gross motor skills, fine motor skills, play skills, and self-help skills. The goal of the project was to develop a mobile sensory garden to help alleviate or reduce the negative aspects of Sensory Integration Disorders. The research involved qualitative research, projective design, and evaluative research on a mobile sensory cart that was used in an elementary school in Topeka, Kansas. Methods included: interviews, design/build, and observation. The current sensory room was inventoried in Williams Science & Fine Arts Elementary Magnet School in Topeka, Kansas, and the children who used were observed. The faculty at the school, including the principal, teachers whose students use the current sensory room, counselors, and other support faculty, were interviewed. Once the observations were analyzed, a mobile sensory garden cart was designed and built. The new cart was brought to the elementary school and placed in the sensory room. A second phase of observation assessed how the children interacted with the new mobile sensory garden cart. During the second phase of observation the children showed intense interest in the mobile sensory garden cart. Some of this can be attributed to it being a new item in the sensory room. Some of the most popular items included the zen garden, wood slices on the wooden dowel, and the plants. In the second week children transitioned to using both the sensory garden cart and the original items in the sensory room. When an item on the sensory garden cart best suited their needs, that item was chosen and when their needs were best suited by other items in the room then that item was chosen. Overall the mobile sensory garden cart was beneficial to the school and the children. It can be easily replicated and modified to fit the individual needs of the children and school.
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Ameri, Ben. "Designing Laminate Composites to House Electronic Sensors for Drill Pipe Applications." Thesis, Curtin University, 2016. http://hdl.handle.net/20.500.11937/51892.
Повний текст джерелаАнотація:
This research demonstrated through technical evaluation and testing, that there is an optimum filament winding fabrication method for a composite material which will not compromise the material strength properties, when embedding electronic sensors within drill pipes manufactured from composite materials. A unique design and material selection analysis followed by this optimum fabrication process, allows the future development of ‘smart’ composite drill pipes.
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Crawford, Douglas Stewart. "Sensor designand feedback motor control for two dimensional linear motors." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/37546.
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Rafieian, Garsivaz, and Marvast Amin Amini. "Designing principles for mobile application data of body sensors on physical activities." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-2591.
Повний текст джерелаАнотація:
This thesis has been divided into two essential parts, the purpose of the first part is to investigate and explore a three-tier architecture for remote health monitoring system capable to collect, store and forward the physiological data, which has been collected by a mobile device via a bluetooth connection from body sensors, to an internet data base server.
During the second part, we have tried to take a deep look into a heart beat modeling method. We have studied and investigated on extended integral pulse frequency modulation model which is used for the presence of ectopic beats and heart rate turbulence.
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Wassum, Ryan Michael. "Baby Boomer Living: Designing a Modern Continuing Care Retirement Community." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1070.
Повний текст джерелаАнотація:
With the largest U.S. generation in the midst of retirement, the Baby Boomer cohort is vastly changing the senior housing landscape. As the housing market gradually improves and the development of senior housing chases the increasing demand, Baby Boomers are a highly selective cohort with more buying and spending power than their predecessors, are healthier and more active, and are demanding an unconventional modification of alternative senior housing. The “traditional” senior community is outdated and no longer seen as a viable choice for retirement, and new and innovated models have surpassed the old-fashioned establishments.
Among the innovative senior community models, the Continuing Care Retirement Community (CCRC) combines a variety of unique residential options and comprehensive services that meet the needs of new and active retirees and aging seniors. Focusing on the Baby Boomer cohort in conjunction with a modified CCRC model, this project examines the current demographic and housing landscape for Baby Boomers and seniors, as well as assesses trending planning techniques and design elements to formulate an ideal senior living prototype for the 234 acre Sinclair Ranch in Chinese Camp, California.
In culmination of research, academic literature review, survey analysis, and case study review, key trending planning and design elements have emerged to develop a state-of-the-art CCRC intended to meet market demands and desires of a growing and highly selective senior cohort. Thus, this project concludes with a design Draft Plan for the Sinclair Ranch that captures both the characteristics of an innovative CCRC and the emergent desires stemming from the shifting senior landscape. With key design recommendations and proposed community features, the draft plan is intended to outline and guide the vision of the proposed development for the Sinclair Ranch CCRC.
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Prahl, Anne. "Designing wearable sensors for Preventative Health : an exploration of material, form and function." Thesis, University of the Arts London, 2015. http://ualresearchonline.arts.ac.uk/9077/.
Повний текст джерелаАнотація:
The financial burden on global healthcare systems has reached unprecedented levels and as a result, attention has been shifting from the traditional approach of disease management and treatment towards prevention (Swan, 2012). Wearable devices for Preventative Health have become a focus for innovation across academia and industry, thus this thesis explores the design of wearable biochemical and environmental sensors, which can provide users with an early warning, detection and monitoring system that could integrate easily into their existing lives. The research aims to generate new practical knowledge for the design and development of wearable sensors and, motivated by the identification of compelling design opportunities, merges three strands of enquiry. The research methodology supports this investigation into material, form and function through the use of key practice-based methods, which include Participatory Action Research (active immersion and participation in a particular community and user workshops) and the generation and evaluation of a diverse range of artefacts. Based on the user-centred investigation of the use case for biochemical and environmental sensing, the final collection of artefacts demonstrates a diverse range of concepts, which present biodegradable and recyclable nonwoven material substrates for the use in non-integrated sensors. These sensors can be skin-worn, body-worn or clothing-attached for in-situ detection and monitoring of both internal (from the wearer) and external (from the environment) stimuli. The research proposes that in order to engage a broad section of the population in a preventative lifestyle to significantly reduce the pressure on global healthcare systems, wearable sensors need to be designed so they can appeal to as many users as possible and integrate easily into their existing lifestyles, routines and outfits. The thesis argues that this objective could be achieved through the design and development of end-of-life considered and cost-effective substrate materials, non-integrated wearable form factors and meticulous consideration of a divergent range of user needs and preferences, during the early stages of design practice.
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Der-Kureghian, E. "Considerations in designing a cybernetic simple 'learning' model; and an overview of the problem of modelling learning." Thesis, Brunel University, 1988. http://bura.brunel.ac.uk/handle/2438/4868.
Повний текст джерелаАнотація:
Learning is viewed as a central feature of living systems and must be manifested in any artifact that claims to exhibit general intelligence. The central aims of the thesis are twofold: (1) - To review and critically assess the empirical and theoretical aspects of learning as have been addressed in a multitude of disciplines, with the aim of extracting fundamental features and elements. (2) - To develop a more systematic approach to the cybernetic modelling of learning than has been achieved hitherto. In pursuit of aim (1) above the following discussions are included: Historical and Philosophical backgrounds; Natural learning, both physiological and psychological aspects; Hierarchies of learning identified in the evolutionary, functional and developmental senses; An extensive section on the general problem of modelling of learning and the formal tools, is included as a link between aims (1) and (2). Following this a systematic and historically oriented study of cybernetic and other related approaches to the problem of modelling of learning is presented. This then leads to the development of a state-of-the-art general purpose experimental cybernetic learning model. The programming and use of this model is also fully described, including an elaborate scheme for the manifestation of simple learning.
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Carcani, Klaudia. "Designing New Social Media Services For Seniors’ : A Participatory Design Approach." Thesis, Linnéuniversitetet, Institutionen för informatik (IK), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-45596.
Повний текст джерелаАнотація:
The society is getting older. A process called aging at the bottom will come with demographic and consequently socio economic changes. Due to this tide wave of elderly I have focused my research on seniors and the need for designing new social media services for them. This thesis is focused an understanding senior’s daily life, their activities, their relationship with their family, friends and groups of interest, how are they currently using the technology and finally to find out with them possibilities for alternative social media services that can sustain or enhance their social engagement and participation. A participatory design approach has been used for the research. Different techniques like cartographic mapping future workshops, walkthrough and diary are the methods that I have chosen for the collection of data. Data gathers is analyzed through the usage of thematic analysis and the main thematic has been presented by the original expressions of seniors during the workshops. Social media is still in its begging when it comes to services for seniors and the opportunities available are huge. This research can be considered a good start also for further services in the future.
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Lipman, Julianne. "Designing for Senior Wellness: An Accuracy Technology System for Home Exercise Programs in Physical Therapy." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531682658146959.
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Nye, Ashley. "Designing and experiencing sensory urban environments : an intensive case study of Grand Union Village in West London." Thesis, Royal Holloway, University of London, 2012. http://repository.royalholloway.ac.uk/items/d27272b8-5355-ec7f-490c-5e653423156e/37/.
Повний текст джерелаАнотація:
Investigating the role of the urban village within 'neo-traditional' urbanism, existing studies focus on flagship projects such as Poundbury. By contrast, this thesis explores the under-researched everyday and mainstream developments undertaken by volume house builders. These developments are not associated with a philanthropic disregard for profit, nor are they showcases for urban theories such as the urban village movement. Through an intensive investigation of one urban village: Grand Union Village (GUV) in Ealing, West London this thesis tracks the development process from conception in 1999 to completion in 2011. It maps the compromises made along the journey resulting from conflicting relationships within the developer, volume house builder Taylor Woodrow. Utilising research drawn from unprecedented access to the development team and original Vision documents, the thesis examines the 'macro-environmental' elements of the Grand Union Vision, which were guided by urban village principles. The 'micro-environment' is examined through the design details, and textures of the built environment which informed the way a sense of place and experience were scripted into GUV. Furthermore, experiential qualities of GUV are explored through walking interviews considering the 'after-life' of the Village and the relationship between design and the lived reality of place. To conclude, this thesis demonstrates how the conflict between the drive for profit and desire to implement urban village principles could not be reconciled at GUV resulting in a development that is more akin to a large housing estate than an urban village. Whilst the sensory and experiential design details of GUV set it apart from normal suburban housing, such details are superficial and will diminish over time. Furthermore, within a suburban setting, the ambiguities of theorising the urban and the village prove problematic, and residents transgress and resist key urban village elements. As such wider attitudes towards suburban urban village developments need to change to allow true urban villages to be delivered.
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Fairhurst, Robert. "Designing molecularly imprinted polymeric phases for sensors, separations and high throughput extractions : spherical and thin-film polymers." Thesis, University of East Anglia, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423395.
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Nguyen, Hien M. "Modeling, Designing, and Implementing an Ad-hoc M-Learning Platform that Integrates Sensory Data to Support Ubiquitous Learning." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2297.
Повний текст джерелаАнотація:
Learning at any-time, at anywhere, using any mobile computing platform learning (which we refer to as “education in your palm”) empowers informal and formal education. It supports the continued creation of knowledge outside a classroom, after-school programs, community-based organizations, museums, libraries, and shopping malls with under-resourced settings. In doing so, it fosters the continued creation of a cumulative body of knowledge in informal and formal education. Anytime, anywhere, using any device computing platform learning means that students are not required to attend traditional classroom settings in order to learn. Instead, students will be able to access and share learning resources from any mobile computing platform, such as smart phones, tablets using highly dynamic mobile and wireless ad-hoc networks. There has been little research on how to facilitate the integrated use of the service description, discovery and integration resources available in mobile and wireless ad-hoc networks including description schemas and mobile learning objects, and in particular as it relates to the consistency, availability, security and privacy of spatio-temporal and trajectory information. Another challenge is finding, combining and creating suitable learning modules to handle the inherent constraints of mobile learning, resource-poor mobile devices and ad-hoc networks.
The aim of this research is to design, develop and implement the cutting edge context-aware and ubiquitous self-directed learning methodologies using ad-hoc and sensor networks. The emphasis of our work is on defining an appropriate mobile learning object and the service adaptation descriptions as well as providing mechanisms for ad-hoc service discovery and developing concepts for the seamless integration of the learning objects and their contents with a particular focus on preserving data and privacy. The research involves a combination of modeling, designing, and developing a mobile learning system in the absence of a networking infrastructure that integrates sensory data to support ubiquitous learning. The system includes mechanisms to allow content exchange among the mobile ad-hoc nodes to ensure consistency and availability of information. It also provides an on-the-fly content service discovery, query request, and retrieving data from mobile nodes and sensors.
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Christner, Cammie. "Celebrating the bond between children and nature: designing a sensory outdoor learning environment for Garfield Elementary School in Augusta, Kansas." Kansas State University, 2013. http://hdl.handle.net/2097/15675.
Повний текст джерелаАнотація:
Master of Landscape ArchitectureDepartment of Landscape Architecture/Regional and Community Planning
Anne Beamish
The current educational model utilized in the United States focuses on teaching technology, preparing for standardized tests, and training students to be productive members of society. These are all valuable and necessary educational goals, especially considering the fact that the current national trend is to promote citizens’ integration into a more global community and job market—significantly affecting the work opportunities available to our country’s youths. However, one of the most necessary and fundamental aspects of childhood—outdoor learning in nature—is being undervalued. Outdoor learning experiences in the natural environment are exceptionally important in encouraging holistic childhood development because they offer children firsthand experiences with natural processes. Through interactions with nature, children are able to witness the impact that human actions have upon the environment. As Richard Louv asserts in the Last Child in the Woods, “Healing the broken bond between our young and nature—is in our self-interest, not only because aesthetics or justice demands it, but also because our mental, physical, and spiritual health depends upon it” (Louv, 2008, 3). The broken relationship between America’s youths and nature must be healed. Public schools offer a unique opportunity for children to be reacquainted with nature because about 90% of American students below the college level attend public schools. In the year 2009, over 2.3 million students attended public elementary schools; 226,082 of those students were in Kansas (National Center for Education Statistics, 2012). Garfield Elementary School in Augusta, Kansas is an ideal situation for the development of an outdoor learning environment that promotes student awareness and connection to local nature. The nature-oriented design of Garfield Elementary School’s grounds, described in this Master’s Report, fosters the creation of deep-seeded emotional ties to the natural world in the children who experience the site—effectively combating Nature-Deficit Disorder by encouraging students to become environmental stewards. This is accomplished by using children’s literature to inspire the organization of spatial environment variety and a range of natural elements (such as water) on the school site, which encourage students to engage in five outdoor learning activities: physical, creative, sensorial, solitary and social.
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Hui, Chung-hong, and 許仲康. "Designing a series of environmental education programmes at Fung Yuen Butterfly Reserve for the new senior secondary curriculum of Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/207648.
Повний текст джерелаАнотація:
In recent decades, environmental education has gradually gained importance in raising people’s awareness to various environmental problems. It is also an essential tool to encourage the public to take actions actively to solve the environmental problems we now face. In Hong Kong, environmental education is carried out at school and is also provided by different government departments and many different environmental NGOs. Being one of the few local NGOs that focus on butterfly conservation, Fung Yuen Butterfly Reserve also provides a butterfly-oriented environmental education programme for students and the public. Nevertheless, the programme has its weaknesses. Its content is not specific. The programme has been operated for years without review. And, it may not fit the learning needs of today’s students. Another weakness identified is the lack of choice of programme offered by the Reserve. With its unique role in conservation of local butterfly fauna, it is believed that the Reserve has the potential to enhance its role in environmental education. Therefore, this study aimed to develop a diverse series of environmental education programmes that could be implemented in the Reserve in the future. A number of things were done to facilitate the design of these new programmes. Environmental education programmes in local and overseas context were reviewed, particularly those which focus on butterfly and its conservation. These programmes provided examples of programme structures, possible themes and contents, as well as learning activities to be included in the new programmes. Most of them included significant outdoor learning time, with various activities to provide interactive and hands-on experience for participants. These activities include wildlife observation and survey, role-play, game, discussion, and etc. Apart from this, the syllabuses of Biology, Geography and Liberal Studies of the current New Senior Secondary Curriculum of Hong Kong were also reviewed so as to identify the education niche where Fung Yuen Butterfly Reserve could potentially fit in. In addition, a questionnaire interview was conducted with school teachers, understanding what themes, contents and learning activities they would expect in the new programme, as well as to what extent should the new programmes match with the school curriculum. In the study, five new programmes were developed. Three of them are targeted at senior secondary school students of Biology, Geography and Liberal Studies. A less specific programme is proposed for junior secondary students, whose learning needs are easier to fulfil than that of senior ones. Finally, it is proposed to keep the current programme with slight level of modification, for audiences like the general public and primary school students. Last but not least, this study also revealed that there is a lack of environmental education programmes in Hong Kong, particularly those which focused on butterfly. On the other hand, the demand for these programmes is relatively great. This would be a strong support for Fung Yuen Butterfly Reserve to revamp its education strategies and satisfy the observed excessive demand. Finally, further suggestions are also given for the Reserve’s advancement in environmental education.published_or_final_version
Environmental Management
Master
Master of Science in Environmental Management
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Kant, Shashi. "Designing Automated Guided Vehicle Using Image Sensor." Thesis, 2010. http://ethesis.nitrkl.ac.in/1830/1/Thesis_Shashi_2010.pdf.
Повний текст джерелаАнотація:
Automated guided vehicles (AGV) are one of the greatest achievements in the field of mobile robotics. Without continuous guidance from a human they navigate on desired path thus completing various tasks, e.g. fork lifting objects, towing, and product transportation inside manufacturing firm. Their development can revolutionize the world in the sense of fool proof navigation and accurate maneuvering. Though most of the presently the AGV work in a retrofitted environment, work space as they require some identification for tracing their guide path, works are going on developing such AGVs which are dynamic in sense of navigation and whose locomotion is not limited to just a retrofitted workspace. The aim of this work was developing such a natural feature AGV which takes visual input in the form images and gains detailed object, obstacle, landmark, identification to decide its guide path. The AGV set up developed, used a commercial electric motor based car ‘Reva i’, as chassis which was fitted with camera to take real time input and resolve it using segmentation and image processing techniques to reach a decision of driving controls. These controls were communicated, or better imparted to vehicle using parallel port of computer to servo motors, which in turn controlled the motion of vehicle. The work was focused more on dynamically controlling the vehicle using refinement of driving mechanism (hardware), however it could be assisted using better segmentation and obstacle detection algorithm. All the retro-fitting and codes were developed in such a way that they could be improved at any stage of time. The results could be enhanced if a better stereoscopic camera were used with a dedicated cpu with better graphics capability. This vision based AGV can revolutionize the mobile robotics world, including systems where a human driver is required to take decisions on the basis of visualized condition.
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Singh, Gaurav Pratap. "Designing of a microcontroller based multi-sensor system." Thesis, 2014. http://ethesis.nitrkl.ac.in/6041/1/212EC3162-1.pdf.
Повний текст джерелаАнотація:
A wireless network containing small interdependent sensor nodes is called WSN (wireless sensor network). Environmental quantities like Light, Temperature, Pressure, Motion, Humidity, Sound etc. are to be measured and monitored with the help of this system. The data that is measured by these sensor nodes is sent to a base station using RF (radio frequency) communication. The communication between the nodes and the base station can be a single hop communication or it can be a multi hop communication depending on the remoteness of the sensor node. The base station also controls the whole network. On each sensor node there are various hardware components. Some of those are Microcontroller, Sensor or Transducer, Radio Frequency Transceiver, Battery or some other power source. Several other components are used for signal processing purpose to bring the sensor output signal in proper form and for proper power supply required for main components. The components required for this purpose are voltage regulators, Amplifiers, resistors, capacitors and crystal oscillator of different frequencies. The main aim of this thesis is to achieve the communication between different sensor nodes and a single receiver simultaneously. The receiver that is base station should be able to display the information received from the sensor nodes. Three similar nRF24L01 nodes were designed and tested to check their functionality. An Attiny85 microcontroller was used to design the sensor nodes and at the base station ATmega328 microcontroller was used. These microcontrollers are programmed in C with Arduino 1.0.5-r2. The signal received from the sensors is converted from analog to digital by the Attiny85 microcontroller and delivered it to nRF24L01+ where it is sent by the radio. The communication between base station and PC is established by a USB connection.
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Buhrym, I., P. Galkin, and O. Vynokurov. "Approaches to Designing a Wireless Sensor Network Node." Thesis, 2019. https://openarchive.nure.ua/handle/document/17532.
Повний текст джерелаАнотація:
The object of the research is the hardware component for building a test platform for wireless sensor networks. The aim of the work is to develop a software and hardware test platform for wireless sensor networks. As a result of the analysis, the node structures, wireless sensor network modules, CC2530 peripherals were analyzed. A module based on the CC2530 PA was chosen as the hardware. Given to optimize the structure of the node for as one of approach to designing a wireless sensor network node. Also given report about difference in approach to designing nodes and uses areas.
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Yeh, C. H., and 葉嘉浤. "The Methodology for Designing a Miniature Optical FingerprintIdentification Sensor." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/fv2pc3.
Повний текст джерелаАнотація:
碩士國立勤益技術學院
工業工程與管理系
93
The recent development of high technology has made several identification methods for biological individuals. They include the features of pupils, faces, fingerprints, voices, etc; and fingerprint identification is the popular one. Since one’s fingerprint is unique, and will not change by the change of age or health. The fingerprint identification sensors available nowadays are mostly belonged to solid-state sensors. As compared with optical sensors, a solid-state sensor has inferior identifying performance, higher cost, lesser quality stability, but is easier to design than an optical sensor.This article proposes a methodology for the design of an optical identification sensor to use Surface Enhanced Irregular Reflection technology to match the fingerprint’s contact plane light guide design of LED and an non-coaxial optical path transform method with the purpose to produce compact and higher image-quality fingerprint identification system. The identification sensor is recommended to be mounted on a photo-electric product, such as a cell phone or a PDA, which will raise its additional profits. Use the properties of refraction and reflection of light, a procedure including the parametric optical path and lens design is proposed. Apply OptisWorks - an optical path analysis software and Zemax - lens image analysis software for the design of the system, and to simulate the proposed method, which creates an optimal fingerprint identification photo-mechanism system.
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Jacoub, John Khalil. "Designing power aware wireless sensor networks leveraging software modeling techniques." Diss., 2014. http://hdl.handle.net/10155/427.
Повний текст джерелаАнотація:
Wireless Sensor Networks (WSNs) are typically used to monitor specific phenomena and gather the data to a gateway node, where the data is further processed. WSNs nodes have limited power resources, which require developing power efficient systems. Additionally, reaching the nodes after a deployment to correct any design flaws is very challenging due the distributed nature of the nodes. The current development of WSNs occurs at the coding layer, which prevent the design from going through a typical software design process. Designing and analyzing the software modules of a WSN system at a higher abstraction layer than at the coding level will enable the designer of a WSN to fix any design errors and improve the system for power consumption at an early design stage, before the actual deployment of the network.
This thesis presents multiple Unified Modeling Language (UML) design patterns that enable the designer to capture the structure and the behavior of the design of a WSN at higher abstraction layers. The UML models are developed based on these design patterns that are capable of early validation of the functional requirements and the power consumption of the system hardware resources by leveraging animation and instrumentation of the UML diagrams.
To support the analysis of power consumption of the communication components of a WSN node, the Avrora network simulator was integrated with the UML design environment such that designer is able to analyze the power consumption analysis of the communication process at the UML layer. The UML and the Avrora simulation integration is achieved through developing a code generator that produces the necessary configuration for Avrora simulator and through parsing the simulator results. The methodology presented in this thesis is evaluated by demonstrating the power analysis of a typical collector system.
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"Designing m-Health Modules with Sensor Interfaces for DSP Education." Master's thesis, 2013. http://hdl.handle.net/2286/R.I.20997.
Повний текст джерелаАнотація:
abstract: Advancements in mobile technologies have significantly enhanced the capabilities of mobile devices to serve as powerful platforms for sensing, processing, and visualization. Surges in the sensing technology and the abundance of data have enabled the use of these portable devices for real-time data analysis and decision-making in digital signal processing (DSP) applications. Most of the current efforts in DSP education focus on building tools to facilitate understanding of the mathematical principles. However, there is a disconnect between real-world data processing problems and the material presented in a DSP course. Sophisticated mobile interfaces and apps can potentially play a crucial role in providing a hands-on-experience with modern DSP applications to students. In this work, a new paradigm of DSP learning is explored by building an interactive easy-to-use health monitoring application for use in DSP courses. This is motivated by the increasing commercial interest in employing mobile phones for real-time health monitoring tasks. The idea is to exploit the computational abilities of the Android platform to build m-Health modules with sensor interfaces. In particular, appropriate sensing modalities have been identified, and a suite of software functionalities have been developed. Within the existing framework of the AJDSP app, a graphical programming environment, interfaces to on-board and external sensor hardware have also been developed to acquire and process physiological data. The set of sensor signals that can be monitored include electrocardiogram (ECG), photoplethysmogram (PPG), accelerometer signal, and galvanic skin response (GSR). The proposed m-Health modules can be used to estimate parameters such as heart rate, oxygen saturation, step count, and heart rate variability. A set of laboratory exercises have been designed to demonstrate the use of these modules in DSP courses. The app was evaluated through several workshops involving graduate and undergraduate students in signal processing majors at Arizona State University. The usefulness of the software modules in enhancing student understanding of signals, sensors and DSP systems were analyzed. Student opinions about the app and the proposed m-health modules evidenced the merits of integrating tools for mobile sensing and processing in a DSP curriculum, and familiarizing students with challenges in modern data-driven applications.Dissertation/Thesis
M.S. Electrical Engineering 2013
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Hu, Teng-Tai, and 胡登泰. "Designing a Hierarchy-Based Routing Protocol for Wireless Sensor Networks." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/45756129668431135221.
Повний текст джерелаАнотація:
碩士淡江大學
電機工程學系碩士在職專班
98
In this paper, we present Bidirectional Hierarchy-based Anycast Routing (BHAR), a routing protocol for collecting data over multi-hop. In comparative to HAR, BHAR speeds up and improve the mechanism to construct hierarchical trees and to repair the route. In BHAR, sinks and sources can initial to construct a hierarchical tree. By knowing only its own parent and neighbor, each node in BHAR can join a tree; a tree can learn the routes to a remote sink by exchanging its routes with its neighboring trees, and send data to the nearest sink by intermediate trees; each node can perform route repair without geographical information or being controlled remotely, and perform local network topology optimization simultaneously in order to prevent the impact to the network and to data communication by periodically and conditionally network reconstruction. We evaluate the performance of BHAR by using VC++ and comparing with those of HAR. The simulation results demonstrate that the average waiting time for a node to join a tree decrease when the number of sinks and sources increase in BHAR. The impact of the increase of the node number and network size to the performance of BHAR is relatively small, which means the scalability is much better. BHAR can endure more nodes to be failed and maintain effective routing operation, which has improve the robustness of BHAR. BHAR achieves much higher performance on route repair in the situation of the unevenly distribution due to different factors.
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Jian-Liang, Lin, and 林建良. "Designing a sensor-based monitoring system for a health care center." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/11023792862328966811.
Повний текст джерелаАнотація:
碩士亞洲大學
資訊工程學系碩士班
94
Taiwan is an aging society, and the elder population will continue to grow at an increasingly faster rate relative to its younger cohorts. With the advancement of medical technologies and improvements in medical facilities, hygiene and basic living standards, the aging population will also face increasingly longer life expectancies. As a result, elder care is an enormous social burden and a critical area of future research and technological development. This paper describes a potential application of ZigBee the latest wireless sensor network technology, to a communication system that tracks an elder person’s physical movement within a freely moveable space such as an elder care facility. The communication system is composed of three parts: a ZigBee node that transmits signals regarding movements of the elder person, a control and management platform based within a mobile device, and a website that serves as the caretaker interface. The application of ZigBee to elder care provides numerous advantages because of many of ZigBee’s desirable features: short range, low power, low data rate, simple communication protocol, low cost, and small footprints. In light of the aging population and growing need for better and more cost-effective elder care in Taiwan, the communication system described in this paper is a promising application of ZigBee because it provides a convenient and efficient mechanism for nurses within an elder care facility to stay actively informed about elder residents.
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Ou, Si-Yu, and 歐司宇. "Designing an Efficient and Load-balanced Overlay in Heterogeneous Sensor Networks." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/69470672517590571893.
Повний текст джерелаАнотація:
碩士國立清華大學
資訊工程學系
93
Heterogeneous sensor network has received a lot of attention in recent years due to its wide range of applications from battlefield to museum guide. Since wireless sensors are often powered by batteries, energy resource of the nodes is a major constraint of the wireless sensor networks. To prolong the system lifetime, it is important to maximizing the system throughput while still maintaining the node life time. \par In this study we consider a heterogeneous sensor network containing at least two types of sensors: one type of sensors is powered by batteries with limited energy, and the other is more powerful sensors which have much higher energy capacity. The powerful sensors may be used for gateways or controllers in the network. To facilitate the communication of the powerful sensors, it is necessary to build an overlay on top of the sensor network to link the powerful sensors. Given that the powerful sensors are still limited in the communication range and their communications with each other require the less powerful sensors in between for message relaying, the problem of determining the overlay topology becomes critical. This overlay must have low diameter so that it can efficiently support upper layer applications, such as resource discovery. In addition, it must consider the energy consumption of the underlying less-powerful, relaying sensors and spread the routing load evenly among the relaying sensors to prolong the system lifetime. In this thesis, we propose a distributed overlay formation protocol to achieve the above goals. Through simulation, we compare our protocol with two overlay formation protocols, {\it fully connected graph} and {\it minimum spanning tree}. The results show that our proposed protocol can achieve better performance both in message latency and energy consumption.
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Reinhardt, Andreas. "Designing Sensor Networks for Smart Spaces - Unified Interfacing and Energy-Efficient Communication between Wireless Sensor and Actuator Nodes." Phd thesis, 2011. https://tuprints.ulb.tu-darmstadt.de/2844/7/Dissertation_AndreasReinhardt.pdf.
Повний текст джерелаАнотація:
Wireless sensor and actuator networks are comprised of embedded systems with sensing, actuation, computation, and wireless communication capabilities. Their untethered character provides installation flexibility and has in consequence led to their application in a large range of domains, e.g. environmental and habitat monitoring, or industrial process surveillance and control. Besides these traditional application areas, the vision of smart spaces foresees the transparent integration of sensing and actuation components into everyday environments. Smart services that rely on information about the current situation and the possibility of physical interaction are envisioned to emerge in versatile ways, such as context-aware building automation or support for ambient assisted living.
From a technological perspective, wireless sensor and actuator networks represent an adequate infrastructure for the realization of smart spaces. As a result of the different application scenarios however, concepts resulting from research on traditional sensor and actuator networks can only be applied to a limited extent. Most prominently, the heterogeneous nature of devices in smart environments necessitates dedicated means to cater for their interoperability. At the same time, the need for small-sized devices entails tight resource and energy constraints, which need to be carefully regarded during application design. Finally, the collection and wireless transmission of data from mobile entities play a vital role in smart environments, whereas they are rarely considered in traditional sensor network deployments.
We address the requirements of smart environments by presenting the Sensor-RPC framework, which enables the generic interoperability between diverse wireless sensor and actuator devices. The presented solution applies the remote procedure call paradigm to abstract from the underlying hardware platforms, i.e. sensing, processing, and actuation functionalities are encapsulated into remotely invocable functions. Sensor-RPC makes use of binary packet representations and a modular parameter serialization concept in order to ensure its efficient applicability on resource-constrained embedded systems.
In order to maximize the utilization of the available energy budget, Sensor-RPC is complemented by Squeeze.KOM, a framework for lossless packet payload compression. Squeeze.KOM takes temporal correlations between successive data packets into account and exploits the observed similarities in order to reduce the size of transmitted packets, and thus the energy demand of their transmission. Depending on the characteristics of the underlying data, the actual data compression step is realized by means of binary distance coding of packet differences, or by applying adaptive Huffman coding with a code tree of limited size. Both take advantage of the specific properties of real-world sensor data sets, in which strongly biased symbol distributions are frequent. Besides the lossless compression of packet payloads, the further reduction of packet sizes by means of header compression is presented. Our stateful header compression mechanism SFHC.KOM omits header fields with constant or deterministically changing values from their transmission by encapsulating them into so called compression contexts. Tailored to its application in smart spaces, SFHC.KOM adapts to the presence of both static and mobile nodes.
The practicality of the devised solutions is investigated through prototypical implementations and the validation of their function on widely adopted wireless sensor and actuator node platforms. We substantiate the evaluations of the presented solutions by detailed analyses of their resource and energy demands. In order to assess the applicability of the contributions in smart environments, real-world data traces from the envisioned application scenario have been collected and extensively used in simulations.
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朱元明. "Preparation and designing of a magnetoresistive sensor based on double perovskite Sr2FeMoO6 thick films." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/25360691642451465630.
Повний текст джерела
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YU, YAN-TING, and 余彥廷. "Designing and Implementation of Ultra-high Speed Motor Driver with Speed Sensor-less Scalar Control." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/89384853559041097755.
Повний текст джерелаАнотація:
碩士國立雲林科技大學
電機工程系
104
An ultra-high speed motor driver with speed sensor-less technology is designed and implemented in this thesis. And, a closed-loop control is adopted which is rarely using in present driver. At these years, the machine tool industry is more and more important in Taiwan. The ultra-high speed motor is an important part of a drilling machine. It is possible to improve the quality and ability of drilling processing by using close loop control in motor driver. The variable voltage variable frequency control, VVVF, is commonly used. In this thesis, the VVVF is used as speed controller. In order to avoid the incremental cost of motor, the sensor-less speed estimation technology is included in this thesis. Moreover, the parameters of motor are got by measuring and calculating in the induction motor parameter measurement test. Before the experiment, the speed estimation and controller are simulated by Matlab/Simulink in order to justify the feasibility. The proposed system is implemented with TI TMS320F28335. The design and implementation of the required motor driver circuit and feedback circuit is described in this thesis. Finally, Experimental result shows that the proposed system is workable.