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 17 of 17 for “"Thermopile"”.
-
Activity recognition based on thermopile imaging array sensors
1 PDF file (vii, 70 pages)
-
Modelling and Design Optimisations of CMOS MEMS Single Membrane Thermopile Detector Arrays
… however, this thesis mainly focuses on 8×8 thermopile based Focal Plane Arrays (FPAs). The core principles governing the function of thermopiles are based on the Seebeck effect. In this thesis, the structure and fabrication process of thermopile FPAs are described and discussed. The thesis …
-
Experimental Design for Estimating Electro-Thermophysical Properties of a Thermopile Thermal Radiation Detector
… junction pairs that are based on a new thermopile technology using materials whose electro-thermophysical properties are not completely characterized. The objective of this investigation is to design experiments aimed at determining the electro-thermophysical properties of the detector …
-
Dynamic Electrothermal Model of a Sputtered Thermopile Thermal Radiation Detector for Earth Radiation Budget Applications
… concept to replace the current bolometer: a thermopile thermal radiation detector. This next-generation detector would consist of a thermal sensor array made of thermocouple junction pairs, or thermopiles. The objective of the current research is to perform a thermal analysis of the …
-
Analytical and Experimental Characterization of a Linear-Array Thermopile Scanning Radiometer for Geo-Synchronous Earth Radiation Budget Applications
… consists of a 256-element linear-array thermopile detector mounted on the wall of a mirrored wedge-shaped cavity. The objective of this research is to provide analytical and experimental characterization of the proposed radiometer. A dynamic end-to-end opto-electrothermal model is …
-
Prediction and Measurement of Thermal Exchanges within Pyranometers
… thermal contact with the hot junction of a thermopile. The cold junction of the thermopile communicates thermally with the large thermal capacitance of the instrument body, which acts as a heat sink. Radiation arrives at the blackened surface through one or two hemispherical dome-shaped …
-
Investigation of edge effects in thermoacoustic couple measurements
… previous work, the measurements were made with thermopiles having junctions that were located along the leading and trailing edges of the TAC plates. Because of its proximity to the edge, the thermopile may have been sensitive to effects which, though perhaps causing local deviations in the …
-
Design and Calibration of a Novel High Temperature Heat Flux Sensor
… 10 brass and steel thermocouple junctions in a thermopile circuit. This gage does not have a separate thermal resistance layer making it easier to fabricate. The HTHFS was calibrated in a custom-made convection calibration facility using a commercial Heat Flux Microsensor (HFM) as the …
-
Dynamically programmable surfaces for high-speed optical modulation and detection
… enables the demonstration of a compact graphene thermopile in the mid-infrared wavelengths and paves the way for future implementations of graphene plasmonic metasurfaces.
-
Optical Analysis of a Linear-Array Thermal Radiation Detector for Geostationary Earth Radiation Budget Applications
… This next-generation detector consists of a thermopile linear array thermal radiation detector. The principal objective of this research is to develop an optical model for the detector and its cavity. The model based on the Monte-Carlo ray-trace (MCRT) method, permits parametric studies to …
-
Validation of a Noninvasive Blood Perfusion Measurement Sensor
… thermal methods. A combination thermocouple/thermopile sensor records heat flux and temperature measurements on the tissue of interest (in this case skin) for a given period of time. These data, in combination with other experimental parameters, are read into a computer program that compares …
-
Design of a System to Monitor Youth Workers' Heat Stress and Positioning using Non-invasive Techniques
… techniques involving a thermistor and thermopile, an accurate estimation of core body temperature can be made. The measurements performed by the devices are recorded and transmitted wirelessly over a ZigBee network using XBee radiofrequency modules. Utilizing the properties of …
-
Performance and design improvements toward the commercialization of a needle-free jet injector/
… been implemented. A Hall effect sensor and a thermopile were added to provide critical safety and quality monitoring of the Lorentz-force motor, and a linear encoder provided increased position resolution. Flexible coil elements reduced drag on the coil while eliminating a mechanical failure …
-
Development and calibration of a heat flux microsensor
… flux microsensor incorporates a differential thermopile, a set of 100 differential thermocouple pairs connected in series across a thin thermal resistance layer. The gage is fabricated on a model surface without the need for additional adhesives. The design configuration allows the thermal …
-
Pulsed mm-Wave electron cyclotron maser experiments
… absolute power measurements (made using a thermopile calorimeter). The following characteristics of the maser oscillation were identified: in the W-band, single mode oscillation in the TE03 mode was observed, centred at 95.2GHz, with an output power of =50kW. The cavity was crudely …
-
Reducción de la incertidumbre en datos de radiación solar para la mejora de la simulación de sistemas fotovoltaicos
… present substantially larger uncertainties than thermopile pyranometers if they are inadequately calibrated. The uncertainty further increased due to operational failures, which were very common in regional and agricultural networks, leading to uncertainties in measurements higher than those of …
-
SUSTAINABLE AND MOBILITY TECHNOLOGIES FOR ASSISTIVE HEALTHCARE AND MONITORING
This thesis focused on the development of technologies for assistive health care and monitoring, all pulled by real and significant clinical needs. Three collaborations with medical and health care practitioners resulted in the development, and real situational and clinical tests of three …