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.
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Showing 1 to 20 of 75 for “"Temperature Sensing"”.
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Applications of infrared fibers in temperature sensing
… and <i>CO</i>₂ laser power, and in several sensing mechanisms. This thesis presents an overview of these new fibers and how they can be applied in noncontact temperature measurement. Fiber optic temperature sensing is thus reviewed, and an optical fiber pyrometer is discussed.
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High-Definition Raman-based Distributed Temperature Sensing
Distributed Temperature Sensing (DTS) has been used in a variety of different applications. Its ability to detect temperature fluctuations along fiber optic lines that stretch for several kilometers has made it a popular topic in various fields of science, engineering, and technology. From pre-fire …
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Applications of Distributed Temperature Sensing in Subsurface Hydrology
… subsurface processes there is a need to monitor temperature and groundwater fluxes efficiently in both time and space. Distributed Temperature Sensing has recently become more accessible to researchers in Earth Sciences, and allows temperatures to be measured simultaneously, at small intervals, …
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Sapphire Fiber-based Distributed High-temperature Sensing System
… harsh environments including high pressure, high temperature, highly electromagnetically-active and corrosive conditions. A typical example is fossil fuel-based power plants. Unfortunately, current optical fiber sensors for high-temperature monitoring can work only for single point measurement, as …
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A high resolution integrated circuit biomedical temperature sensing system
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Fluorescent Materials and Thin Film Coatings for Temperature Sensing Applications
Accurate temperature monitoring in high-temperature mechanical systems is critical for ensuring operational safety, efficiency, and durability. These environments subject components to extreme thermal and mechanical stress, requiring robust and reliable temperature sensing methods. Traditional …
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Distributed Pressure and Temperature Sensing Based on Stimulated Brillouin Scattering
… been verified to be an effective mechanism in temperature and strain sensing. This kind of sensors can be applied to civil structural monitoring of pipelines, railroads, and other industries for disaster prevention. This thesis first presents a novel fiber sensing scheme for long-span …
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An organic thin-film transistor circuit for large-area temperature-sensing
… of organic thin-film transistors (OTFTs) for temperature-sensing. The goal of this work is twofold: the understanding of the OTFT's electrical characteristics' temperature dependence, and the creation of OTFT temperature-sensing circuits. We find that OTFTs have temperature-dependent …
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Remote temperature sensing with low-threshold-power using erbium-doped fiber laser
Remote temperature sensing is of significant interest nowadays as it can continuously monitor structures located at tens or hundreds of kilometers away from a central location. With remote sensing, any damage of structures can be detected immediately, thus appropriate action can be taken quickly. …
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A fibre optic system for distributed temperature sensing based on raman scattering.
… is based on a research project to monitor the temperature profile along a power cable using the fibre optic Distributed Temperature Sensing (DTS) technology. Based on the temperature measured by a DTS system, real time condition monitoring of power cables can be achieved. In this thesis, there …
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Exploitation of fibre characteristics in temperature sensing and radio-over-fibre applications
The development of sensing devices is one of the instrumentation fields that has grown rapidly in the last decade. Corresponding to the swift advance in the development of microelectronic sensors, optical fibre sensors are widely investigated because of their advantageous properties over the …
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Miniature Fiber-Optic Farby-Perot Interferometer: Fabrication, Data Processing and Temperature Sensing Application
Temperature sensors are extremely important in academic research and industrial application. Among various temperature sensors, optical sensors are attractive due to many advantages. This dissertation focuses on the development of a robust optical temperature sensor with promising performance and a …
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Multi-point temperature sensing in gas turbines using fiber-based intrinsic Fabry-Perot interferometers
… excellent candidates for almost any multi-point temperature or strain application, and it is well-known that using a single-mode lead-in fiber, a multi-mode fiber section as the Fabry-Perot cavity, and an additional single-mode fiber as the tail results in a structure that generates strong …
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Plasma Treatment of Zinc Oxide Thin Film and Temperature Sensing Using the Zinc Oxide Thin Film
… the as deposited film. This work also reports a temperature sensor based on the temperature-dependent bandgap of zinc oxide semiconductors. Transmittance measurement of the ZnO films at different temperatures showed sharp absorption edge at around 380 nm and red shift characteristics. An optical …
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Numerical and graphical methods for estimation of water injection zonal allocation from distributed temperature sensing data
Includes bibliographical references (pages 115-117).
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Remote three-dimensional temperature sensing using planar laser induced fluorescence : development and applications to microwave heated liquids
… in application by difficulties in measuring temperatures and temperature distributions during the microwave heating process. This thesis describes the development of a 3D imaging fluorescence thermometry system that was used to examine temporal and spatial variations in temperature within …
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In situ temperature monitoring of the McMurdo Ice Shelf and ice shelf cavity by fiber-optic distributed temperature sensing
… containing fiber-optic cables for distributed temperature sensing (DTS) were installed at Windless Bight, Antarctica. Temperature was measured every meter along the deployed optical fibers over the 14 month test period via Raman backscatter DTS. Over 9 million temperature measurements were …
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Development of a Miniature, Semi-Distributed Sapphire Fiber Optic Thermometer for Harsh and High Temperature Environments
Fiber optic temperature sensing has become a well-defined field in the past few decades [1] through the use of Fiber Bragg Gratings, Fabry-Perot interferometry, and pyrometry, to list several techniques in use today. The use of fiber optics offers significant advantages over electronic sensing in …
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A Quasi-distributed Sensing Network Based on Wavelength-Scanning Time-division Multiplexed Fiber Bragg Gratings
… (WSTDM) of 1000 ultra-weak FBGs for distributed temperature sensing. In comparison with the OFDR method, the WSTDM method distinguishes the sensors by different time delays, and its maximum operation distance, which is limited by the transmission loss of the fiber, can be as high as tens of …
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