Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 119 for “"Sensor systems"”.
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Optical fiber-based corrosion sensor systems
… of a multimode cylindrical geometry for the sensor fiber. Under the correct conditions, energy in the TM modes in the fiber will transfer to a surface plasmon mode coupled to the surface of a metal film on the fiber. Monitoring the spectral output of the sensor provides information on the …
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Iwear - intelligent wearable sensor systems for disability rehabilitation
Wearable sensor-based healthcare systems have drawn a lot of attention from the scientific community and the industry during the past several years. As the healthcare cost is increasing and the population is aging, unobtrusive, low cost and accurate healthcare systems will potentially transform the …
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Unattended acoustic sensor systems for noise monitoring in national parks
Detection and classification of transient acoustic signals is a difficult problem. The problem is often complicated by factors such as the variety of sources that may be encountered, the presence of strong interference and substantial variations in the acoustic environment. Furthermore, for most …
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Security techniques for sensor systems and the Internet of Things
<p>Sensor systems are becoming pervasive in many domains, and are recently being generalized by the Internet of Things (IoT). This wide deployment, however, presents significant security issues.</p> <p>We develop security techniques for sensor systems and IoT, addressing all security management …
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Mobile sensor systems for field estimation and "hot spot" identification
… towards a sustainable future. While mobile sensor systems have attracted significant attention in recent years, a large scale deployment for urban infrastructure monitoring poses many research challenges. One fundamental challenge is dealing with noisy and uncontrolled samples stemming from …
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Robust Bayesian Anomaly Detection Methods for Large Scale Sensor Systems
Sensor systems, such as modern wind tunnels, require continual monitoring to validate their quality, as corrupted data will increase both experimental downtime and budget and lead to inconclusive scientific and engineering results. One approach to validate sensor quality is monitoring individual …
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Development and assessment of new sensor systems in food packaging applications
The use of optical sensor technology for non-invasive determination of key quality pack parameters improved package/product quality. This technology can be used for optimization of packaging processes, improvement of product shelf-life and maintenance of quality. In recent years, there has been a …
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Multi-criteria design analysis of sensor systems for railway level crossings
… against the accidents, obstacle detection systems are widely installed and used in a large number of level crossings in Japan. However, current obstacle detection systems can typically detect only automobiles and not pedestrians and can be improved in accuracy and reliability performance. …
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An automated framework for power-efficient detection in embedded sensor systems
The availability of miniature low-cost sensors has allowed for the capture of rich, multimodal data streams in compact embedded sensor nodes. These devices have the capacity to radically improve the quality and amount of data available in such diverse applications as detecting degenerative …
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Magnetophotonic sensor systems for fibre-optic magnetic diagnostics in tokamak fusion reactors
… as part of critical magnetic diagnostic systems becomes increasingly unfeasible. In this thesis, it is proposed that due to their record of high performance in adverse conditions, optical fibre sensors may be the most appropriate alternative measurement technology. However, in order to …
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Improving situational awareness in the counter-IED fight with the utilization of unmanned sensor systems
An organized and thorough systems design framework is necessary to successfully address large-scale, complex problems, such as the utilization of unmanned sensor technologies to provide situational awareness (SA) in the counter-improvised explosive device (C-IED) fight. An appropriate systems …
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Wearable sensor systems to study the physiological and behavioral manifestation of cigarette smoking in free-living
… This dissertation proposes new wearable sensor systems and related signal/image processing and pattern recognition methods for the objective, accurate and automatic detection of cigarette smoking with minimal effort from the person being observed. Main accomplishments of this dissertation …
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Development of enhanced performance luminescence-based optical sensor systems for single-analyte and multii-analyte applications
Luminescence-based sensors are widely used and are the subject of considerable attention from both a research and a commercial perspective. This work details the development of enhanced-performance luminescence-based sensor systems. Development eorts have focussed on three areas: instrumentation …
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Design of Sensor Networks for Detection Applications via Large -Deviation Theory
Distributed sensor systems with the capacity to collect, process, and transmit environmental data have the potential to enable the next revolution in information technology. The rising interest in such sensor systems originates primarily from the low cost of emerging miniature sensing technologies, …
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Split learning on FPGAs
… a broader trend in the increased use of FPGAs in sensor systems in order to reduce size and power consumption without a corresponding loss in performance or flexibility. At the same time, the field of machine learning is diversifying to include distributed deep learning methods like split …
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Pollutant monitoring with fibre optics in the deep ultraviolet
… of ultraviolet fibre-optic based absorption sensor systems, including those with the newly available ultraviolet improved silica fibres having low attenuation in the 200 nm to 250 nm wavelength region. Several approaches to optimize the optical design of such sensor systems, their sensitivity …
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Opportunities for human-interfaced capacitive sensing in building environments
… several types of novel long-range capacitive sensors that enable better detection of how people move through buildings, presenting ample opportunity for smart lighting and utility control. Various arrangements of sensors on walls, ceilings, and floors turn building surfaces into sensor …
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Design and fabrication of precision carbon nanotube-based flexural transducers
… and more sensitive force and displacement sensors need to be developed. Currently, many biological, materials science, and nanomanufacturing applications could benefit from multi-axis micro- and nanoscale sensors with fine force and displacement resolutions. Unfortunately, such systems do …
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Developing hydrodynamic sensing capabilities for fish-like robots
… realize their potential of swimming like a fish, sensor systems are needed which provide hydrodynamic information such as flow speed and direction while being able to withstand the demanding oceanic conditions. Existing sensor systems offer high sensitivity, rivalling the biological analogue but …
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Intensity based interrogation of optical fibre sensors for industrial automation and intrusion detection systems
In this study, the use of optical fibre sensors for intrusion detection and industrial automation systems has been demonstrated, with a particular focus on low cost, intensity-based, interrogation techniques. The use of optical fibre sensors for intrusion detection systems to secure residential, …
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