Дисертації з теми "Electronic sensors"
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Cavanaugh, Curtis. "AN ADAPTIVE ELECTRONIC INTERFACE FOR GAS SENSORS." NCSU, 2002. http://www.lib.ncsu.edu/theses/available/etd-20020108-121219.
Повний текст джерелаCAVANAUGH, CURTIS C. An Adaptive Electronic Interface for Gas Sensors (Under the direction of H. Troy Nagle).This thesis focuses on the development of an adaptive electronic interface for gas sensors that are used in the NC State electronic nose. We present an adaptive electronic interface that allows for the accurate mapping of the sensor?s voltage output to sensor resistance profiles. The adaptive interface uses a linearized Wheatstone bridge in a constant current configuration. The balancing of the bridge and the adjustment of the subsequent gain stage is performed using programmable variable resistors. The programmable resistors are controlled by a LabVIEW® program. The same control program also determines and records all the resistor values in the interface circuit. The resistance of each sensor is accurately computed by LabVIEW® using the interface-circuit, resistor values, and the voltage output of the circuit. Compensating for sensor drift can be done in LabVIEW® by adjusting the programmable resistor values so that a zero-voltage output is produced during the reference cycle. By doing this zero adjustment between each ?sniff? of an odorant, the baseline drift can be minimized.A single channel of the adaptive electronic interface has been designed and tested. The interface can be calibrated so that it is 99% accurate when performing sensor resistance measurements.A new conducting polymer sensor chamber has also been designed and tested. The new radial flow sensor chamber was minimizes the dead volume in the chamber and also deliver the odorant to each sensor at the same time. Two operating modes were compared: continuous-flow and sniff-and-hold. Both modes gave good classification performance while testing four different coffee samples. Experimental testing indicates that sensor response is highly correlated with the sample flow rate. Future work to more fully characterize this correlation is recommended.
Besrour, Marouen. "Wearable electronic sensors for vital sign monitoring." Master's thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/29543.
Повний текст джерелаWe propose in this project a wearable electronic Patch Radar sensor that can monitor respiration rate and respiration depth continuously in real-time and transmit data to a base station for analysis. The device relies on a two-antenna configuration. Both antennas are bent to the patient chest, and when the patient breathes, the mechanical movement of the chest wall changes the distance between them. The system measures the relative distance between the antennas to extract the respiration pattern. The key feature of the sensor is that it transduces respiration movements to phase shifts in RF wave signals which make it very robust against external interferences. The design was implemented on a PCB (46mm x 46mm) to demonstrate a proof of concept for the proposed device. The system was able to acquire respiration signals and even cardiac frequency. Experimental results are presented for three different subjects, an adult male and female and a child. The data gathered gives enough sensitivity and accuracy to state that the device can work with different physical morphologies.
Zellers, Brian Andrew. "3D Printed Wearable Electronic Sensors with Microfluidics." Youngstown State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1575874880525156.
Повний текст джерелаUnander, Tomas. "System integration of electronic functionality in packaging application." Doctoral thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-14311.
Повний текст джерелаNär efterfrågan på mer intelligenta och säkra produkter ökar så ökar även intresset för olika typer av sensorer. När kostnaden för dessa sensorer sjunker så kommer användandet av dessa att utökas till nya marknadssegment som tidigare inte använt denna typ av funktionalitet, som tillexempel pappersbaserade förpackningar, hygienartiklar och papper för grafiskttryck. Det är för närvarande ett stort intresse att utveckla tekniker som tillåter förpackningar att bli interaktiva och integrerade med olika digitala tjänster kopplade till Internet. I denna avhandling så presenteras systemintegrationen av en RFID baserad sensor plattform som tillhandahåller en avvägning mellan kommunikationsprestanda, kompabilitet med internationella standarder och kundanpassningsflexibilitet. Där man direkt på förpackningen kombinerar fördelarna med traditionell kiselbaserad elektronik med trycktelektronik för att kunna skapa intelligenta förpackningar. I avhandlingen presenteras och utvärderas även fem trycka fuktsensorer som är designade att kunna användas tillsammans med sensor plattformen. Den första sensorn mäter fukthalten i cellulosabaserade substrat. Den andra kan detektera höga fukthalter i luften. Den tredje, som aktiveras vid en händelse, producerar en elektrisk ström när den blir fuktig. Den fjärde sensorn använder sig av silverbaserade partiklar i nanostorlek för att mäta fukthalten i luften. Den femte sensorn är en beröringskänslig sensor som ger utslag av fukten i handen. Utöver dessa sensorer så utvärderas även ett koncept med en fuktsensor som kan läsas av på avstånd. Fokus är således att på system integrationsnivå, med hjälp av att kombinera kisel elektronik med tryckt elektronik, hitta den mest kostnadseffektiva lösningen med avseende på flexibilitet, sensor funktionalitet och att även kunna möta kommunikationsstandarderna.
Elliott, Joanne Margaret. "Conducting polymer odour sensors." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242764.
Повний текст джерелаCooper, Christopher Robert. "Novel PET sensors." Thesis, University of Birmingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368518.
Повний текст джерелаNorman, D. C. C. "Interrogation of fibre optic sensors." Thesis, Aston University, 2006. http://publications.aston.ac.uk/8022/.
Повний текст джерелаChen, Si. "Electronic Sensors Based on Nanostructured Field-Effect Devices." Doctoral thesis, Uppsala universitet, Fasta tillståndets elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-194015.
Повний текст джерелаIoannides, Nicos. "Novel opto-electronic and plastic optical fibre sensors." Thesis, London Metropolitan University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287610.
Повний текст джерелаHodgins, Diana. "Vibrating solid-state sensors." Thesis, University of Hertfordshire, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314742.
Повний текст джерелаSimpson, Alexander George. "Optical fibre sensors and their interrogation." Thesis, Aston University, 2005. http://publications.aston.ac.uk/8006/.
Повний текст джерелаKritzinger, Pieter Christo. "The development of carbon nanostructured sensors." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5389.
Повний текст джерелаENGLISH ABSTRACT: During this research the possibility of using carbon nanostructures in sensors were investigated. Graphene and carbon nanotubes (CNTs) are the nano- structures that were used in the developed sensors. Graphene is a single atomic layer of carbon and a carbon nanotube (CNT) is a rolled up sheet of graphene that forms a tube. The unique structure and incredible properties of both these materials make them ideal to be used in sensory applications. A graphene sensor was developed and experiments were performed to determine whether graphene is a viable candidate to be used in a wide range of sensory applications. The graphene sensor operated successfully as a humidity sensor and this led to the discovery that humidity can be used to control the bandgap in graphene. The absorption of CO2 in graphene was successfully measured using surface acoustic waves. As a result, any gas that graphene absorbs can be detected using this method. The use of graphene in three liquid applications was tested. The graphene showed no potential to be used as a pH sensor or as a ow sensor. An experiment was undertaken to determine whether graphene can increase the e ciency of a water electrolysis process, but it was established that the graphene does not make a signi cant di erence. A CNT gas sensor that identi es a gas based on its ionization characteristics was studied and designed. Due to the insu cient height of the grown CNTs, it was decided to focus on the creation of a model of the sensor that can be used to design it optimally. The results of the experiments con rmed that carbon nanostructures such as graphene and CNTs have potential to be used in future sensing applications.
AFRIKAANSE OPSOMMING: Hierdie navorsing ondersoek die moontlikheid om koolstof-nanostrukture in sensor-apparate te gebruik. Grafeen en koolstof-nanobuisies (KNB) is die nanostrukture wat in die ontwikkelde sensors gebruik is. Grafeen is 'n enkel atomiese koolsto agie en KNBs is 'n opgerolde grafeenlagie wat 'n buisie vorm. Die unieke struktuur en ongeloo ike eienskappe van beide hierdie materiale, maak hulle uiters geskik om in sensor-toepassings gebruik te word. 'n Grafeensensor is ontwikkel en eksperimente is uitgevoer om te bepaal of grafeen 'n goeie kanidaat is om in 'n wye verskeidenheid van toepassings gebruik te word. Die grafeensensor is suksesvol aangewend as 'n humiditeitsensor en dit het gelei tot die uitvindsel dat humiditeit gebruik kan word om die energiegaping in grafeen te varieer. Die absorpsie van CO2 in grafeen is suksesvol gemeet deur oppervlak akoestiese golwe te gebruik. Gevolglik kan enige gas wat grafeen absorbeer op hierdie manier gemeet word. Die gebruik van grafeen is in drie vloeistof-toepassings getoets. Die grafeen het geen potensiaal getoon om as 'n pH-sensor of as 'n vloei-sensor aangewend te word nie. 'n Eksperiment is ook uitgevoer om te toets of grafeen die e ektiwiteit van 'n water-elektroliese proses kan verhoog, maar die resultate het gewys dat dit nie 'n wesenlike verskil maak nie. 'n KNB-gassensor, wat 'n gas identi seer uit die ioniseerings eienskappe van die gas, is bestudeer en ontwikkel. Die lengte van die KNBs wat gegroei is, was onvoldoende en daar is gefokus op die ontwerp van 'n model van die sensor wat gebruik kan word om dit optimaal te ontwerp. Die resultate van die eksperimente het bevestig dat koolstof-nanostrukture soos grafeen en KNB baie potentiaal het om in toekomstige sensor-toepassings gebruik te word.
Johnson, David Gary. "Integrating sensors and actuators for robotic assembly." Thesis, University of Hull, 1986. http://hydra.hull.ac.uk/resources/hull:11276.
Повний текст джерелаTaj, Murtaza. "Tracking interacting targets in multi-modal sensors." Thesis, Queen Mary, University of London, 2009. http://qmro.qmul.ac.uk/xmlui/handle/123456789/408.
Повний текст джерелаBarro, Alessandro. "Indirect TPMS improvement: sensor fusion with ultrasound parking sensors." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23765/.
Повний текст джерелаBesnard, Isabelle. "Improvement of conducting polymer gas sensors." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341716.
Повний текст джерелаLoday, Sylvie (Sylvie Johanna) 1977. "Electronic architecture and technoogy development of astronaut spaceflight load sensors." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/83679.
Повний текст джерелаJabir, Saad A. A. "Thick film electronic ceramic sensors for civil structures health monitoring." Thesis, Edinburgh Napier University, 2011. http://researchrepository.napier.ac.uk/Output/4475.
Повний текст джерелаNortheast, David Bernard. "Hot electron bolometer sensors for millimetre-wave and terahertz wave detection." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6468.
Повний текст джерелаENGLISH ABSTRACT: The design and simulation of hot electron bolometer sensors for the detection of millimeter and terahertz wave radiation is presented. These devices can be used for the formation of images or for spectroscopy in these frequency ranges. Many molecules resonate and have absorption spectra over these ranges, allowing for the identi cation, non-destructively and at a distance, of the constitution of many di erent materials. The penetrating ability of the radiation makes mm-wave and THz wave detectors ideal for security imaging. The design and simulation of these devices predicts performance as mixers and as interferometers. Manufacturing processes used while fabricating these thin lm devices are outlined and experimental results are reported.
AFRIKAANSE OPSOMMING: Hierdie tesis bespreek die ontwerp en simulasie van warm-elektron bolometers vir die waarneming van millimetergolf- en terahertz-straling. Sodanige toestelle kan in bogenoemde frekwensiebereike gebruik word vir beeldvorming of spektroskopie. Aangesien heelwat molekules binne hierdie bande resoneer, kan die samestelling van 'n verskeidenheid materiale oor 'n afstand en op 'n nie-vernietigende wyse gedenti seer word. Die deurdringingsvermo van millimetergolf- en terahertz-straling maak sulke detektors ideaal vir beeldvorming in veiligheidstoepassings. Met die ontwerp en simulasie van hierdie toestelle word gewys wat hul werkverrigting as mengers en interferometers kan wees. Die prosesse wat gebruik is om hierdie dun lmtoestelle mee te vervaardig word ook bespreek en eksperimentele resultate word aangebied.
Jones, Alexander R. "The application of temperature sensors into fabric substrates." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/11991.
Повний текст джерелаDepartment of Apparel, Textiles, and Interior Design
Diana Sindicich
With continuing advancements in the area of electronics, there are more ways in which they are utilized in order to improve the lives of humans. These advancements have to led to the incorporation of electronic components into fabric structures, creating electronic textiles (e-textiles). As it has become possible to place small electrical components within clothing without the performance of the electronics being hampered, research has been conducted in the use of e-textiles in measuring aspects of the human body, such as the heart rate and perspiration rate. In the area of skin temperature, research has been conducted in the past using e-textiles for skin temperature measurement, but past efforts have been unsuccessful in incorporating useable temperature sensors into a fabric substrate. This study compared three types of sensors incorporated into woven and knitted fabrics, using insulated thermocouples, un-insulated thermocouples, and resistance temperature directors (RTDs). Three incorporation methods (weaving, interlacing into knit, and stitching) were used in six fabric samples, with the three sensor types woven and stitched into three woven fabric samples, while the sensors were interlaced into knitted fabric and stitched into the three knitted samples. Fabric hand washing and temperature measurement tests were conducted, and the temperature readings were analyzed statistically for comparison. The analysis conducted showed that the thermocouples that were interlaced or stitched onto the knitted fabric samples were best for temperature measurement due to their accuracy and durability, while the RTDs were unusable as a temperature sensor, as the removal of the electrical connectors during washing eliminated the calibration that was established before washing. This research was supported in part by the Institute for Environmental Research at Kansas State University.
Arab, Hassani Faezeh. "Resonant nano-electro-mechanical sensors for molecular mass-detection." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/336335/.
Повний текст джерелаSpångéus, Per. "New algorithms for general sensors, or, How to improve electronic noses /." Linköping : Univ, 2001. http://www.bibl.liu.se/liupubl/disp/disp2001/tek714s.pdf.
Повний текст джерелаAmeri, 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 джерелаLin, Ismael. "Combining dense short range sensors and sparse long range sensors for mapping." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223572.
Повний текст джерелаKartläggning är en av huvudkomponenterna för autonoma robotar, och består av att bygga en modell av miljön utifrån informationen som samlats in av olika sensorer över tid. Dessa kartor kommer att ha olika attribut beroende på vilken typ av sensor som används för rekonstruktionen. I denna avhandling är fokus på RGBD-kameror och LiDARs. Datan från kameror är kompakt men kan bara mäta korta sträckor och det är utmanande att konstruera storskaliga och konsistenta kartor. LiDARs är exakt motsatta, de ger gles data men kan mäta långa avstånd noggrant och stödjer därför storskalig kartering bättre. Avhandlingen presenterar en metod som använder båda typerna av sensorer i syfte att kombinera deras styrkor och minska svagheterna. Utvärderingen av systemet sker i en inomhusmiljö och med en autonom robot. Resultatet av avhandlingen visar en karta som är robust i stora miljöer och har tät information om omgivningen.
Main, Andrew Stuart. "Low-cost interrogation of optical fibre Bragg grating sensors." Thesis, Aston University, 2007. http://publications.aston.ac.uk/8101/.
Повний текст джерелаVan, Wyk Carel. "Markerless augmented reality on ubiquitous mobile devices with integrated sensors." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6790.
Повний текст джерелаENGLISH ABSTRACT: The computational power of mobile smart-phone devices are ever increasing and high-end phones become more popular amongst consumers every day. The technical speci cations of a high-end smart-phone today rivals those of a home computer system of only a few years ago. Powerful processors, combined with cameras and ease of development encourage an increasing number of Augmented Reality (AR) researchers to adopt mobile smart-phones as AR platform. Implementation of marker-based Augmented Reality systems on mobile phones is mostly a solved problem. Markerless systems still o er challenges due to increased processing requirements. Some researchers adopt purely computer vision based markerless tracking methods to estimate camera pose on mobile devices. In this thesis we propose the use of a hybrid system that employs both computer vision and integrated sensors present in most new smartphones to facilitate pose estimation. We estimate three of the six degrees of freedom of pose using integrated sensors and estimate the remaining three using feature tracking. A proof of concept hybrid system is implemented as part of this thesis.
AFRIKAANSE OPSOMMING: Die berekeningskrag van nuwe-generasie selfone neem elke dag toe en kragtige "slim-fone" word al hoe meer populêr onder verbruikers. Die tegniese spesifikasies van 'n nuwe slim-foon vandag is vergelykbaar met die van 'n persoonlike rekenaar van slegs 'n paar jaar gelede. Die kombinasie van kragtige verwerkers, kameras en die gemaklikheid waarmee programmatuur op hierdie toestelle ontwikkel word, maak dit 'n aantreklike ontwikkelingsplatform vir navorsers in Toegevoegde Realiteit. Die implimentering van 'n merker-gebaseerde Toegevoegde Realiteitstelsel op selfone is 'n probleem wat reeds grotendeels opgelos is. Merker-vrye stelsels, aan die ander kant, bied steeds interessante uitdagings omdat hulle meer prosesseringskrag vereis. 'n Paar navorsers het reeds rekenaarvisie-gebaseerde merker-vrye stelsels aangepas om op selfone te funksioneer. In hierdie tesis stel ons die ontwikkeling voor van 'n hibriede stelsel wat gebruik maak van rekenaarvisie sowel as geintegreerde sensore in die foon om die berekening van kamera-orientasie te vergemaklik. Ons gebruik geintegreerde sensore om drie uit ses vryheidsgrade van orientasie te bereken, terwyl die oorblywende drie met behulp van rekenaarvisie-tegnieke bepaal word. 'n Prototipe stelsel is ontwikkel as deel van hierdie tesis.
Cabrera, Sandra F. "Chemical sensors for urea and organophosphate nerve agents." abstract and full text PDF (free order & download UNR users only), 2006. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3221401.
Повний текст джерелаLoh, Tzu Liang. "Integrated microfluidics, heaters, and electronic sensors for Lab-on-a-Chip applications." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32355.
Повний текст джерелаIncludes bibliographical references (leaves 123-125).
Microfluidics, microfabricated suspended heaters and electronic field effect sensors have been successfully integrated on a single device chip. This integration enables spatial cycling of as little as 11nL of reagents over different thermally isolated temperature zones, to be coupled with the field effect sensing capabilities, for label-free detection of biomolecules such as DNA. The microfluidic valves provide control over reagent flow, and flow rates of up to 1.8nLs⁻¹ have been demonstrated with the on-chip pumps. Initial characterization of the suspended heaters was successfully carried out using thermochromic crystals. Functionality of the heaters was shown and a rough calibration was obtained. The subsequent implementation of temperature measurement using fluorescent dyes, enabled real-time spatial temperature mapping. This method demonstrated the capability of monitoring fluid temperatures in microfluidic channels with 5ÌC accuracy at 2[mu]m² resolution. Thermal isolation of the suspended heaters was clearly observed from the steep gradients in the spatial temperature profiles captured. Finally, localized boiling of water in the microfluidic channels was achieved, with only 30mW supplied to the heaters. In order to evaluate the sensors, tests were carried out to determine its sensitivity to surface charge. Buffer solutions of different pH were injected, and the sensors have been able to measure pH values ranging from 2.2 - 7.4 and demonstrate sensitivity of up to 38.8mV per pH unit change. Highly charged poly-electrolytes were also investigated as model systems to validate sensor detection of charged biomolecules.
(cont.) The adsorption and layer-by-layer deposition of multiple poly-electrolyte layers to the sensor surface have been successfully detected. This device paves the way for future integration of multiple microfluidic compo- nents, for lab-on-a-chip applications.
by Tzu Liang Loh.
S.M.
Kahn, Mohammed Tariq Ekeramodien. "Miniaturised dedicated application opto-electronic sensors in the evolution of smart systems." Thesis, Peninsula Technikon, 2002. http://hdl.handle.net/20.500.11838/1196.
Повний текст джерелаIn the last decade, the South Amcan Electricity Supply Commission would have had their ability to serve an ever demanding public severely tested. With the dilemma of providing electricity supply through hazardous environmental conditions, and with prospects of supplying power even beyond South Afiican borders, the need for a comprehensive damage and power delivery assessment strategy becomes all the more relevant. The rapid growth being made in the evolution of so called "intelligent" structures, with inherent sensor, actuator and control mechanisms built in can have direct influence on a power distribution network. At least in the foreseeable future, the impact ofphotonic sensors with inherent miniaturization, a foremost candidate in Smart System technology, can play a vital role in damage assessment of a potentially large network such as that found in the supply ofelectricity. Smart systems are nonliving systems that integrate the functions of sensing, actuation, logic and control, to respond adaptively to changes in their condition or environment to which they are exposed, in a useful and usually repetitive manner. Sensors are a fundamental part of the evolution of such systems and form the basis for the topic of this dissertation. The use ofoptical fiber sensors is increasing widely mainly due to their (a) miniature size, (b) remote signal processing ability, and (c) multiplexing capabilities. Because of the above features a variety of optical fiber sensing techniques has evolved over the years having potential for a myriad of applications. In this work a systems model and equations was developed for modeling the propagation of light in a optical waveguide, in order to study a Fabry Perrot sensor topology for application as a miniaturised sensor in a new type of smart structure, namely a smart electrical power system.
Paszkiewicz, B., M. Wosko, R. Paszkiewicz, and M. Tlaczala. "Growth and characterization of algan/gan heterostructures for electronic devices and sensors." Thesis, Sumy State University, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20591.
Повний текст джерелаTong, Jingbo. "MEASUREMENT AND MODELING OF HUMIDITY SENSORS." UKnowledge, 2014. http://uknowledge.uky.edu/ece_etds/59.
Повний текст джерелаGong, Weidong. "Ocean sensors, for marine environmental monitoring." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/143801/.
Повний текст джерелаChevatco, Vladimir. "Calibration of Vibration sensors - Evaluation and Effectivization." Thesis, KTH, Teknisk informationsvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215097.
Повний текст джерелаI detta examensarbete studeras kalibreringsprocessen för ett geofon-baseratmätinstrument. Målet med kalibreringen är att skatta mätinstumentets egenskaperi form av egenfrekvens, dämpning och förstärkning. Instrumentet kalibreraspå ett skakbord och valet av insignal till skakbordet samt parameterskattningsmetodenbehandlas. Tre olika insignaler testas och en ny kalibreringsprocesssom använder multiton-insignaler och systemidentifieringför parameterskattning presenteras.
Md, Noor Mohammad Faizuddin. "Machine learning techniques for implicit interaction using mobile sensors." Thesis, University of Glasgow, 2016. http://theses.gla.ac.uk/7723/.
Повний текст джерелаSoleimanpour, Amir Masoud. "Synthesis, Fabrication and Surface Modification of Nanocrystalline Nickel Oxide for Electronic Gas Sensors." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1365071722.
Повний текст джерелаBlair, Neil. "The development and characterisation of conducting polymer based sensors for use in an electronic nose." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363297.
Повний текст джерелаPoopalasingam, Shivani. "Neural network based digital compensation schemes for industrial pressure sensors." Thesis, Coventry University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387520.
Повний текст джерелаThong, Yee Keat. "A novel computer interface tool using low cost inertial sensors." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246360.
Повний текст джерелаCarbó, Cubero Paula. "Toward localization and mapping with heterogeneous depth sensors." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286285.
Повний текст джерелаTaylor, Eric F. "Power delivery to remote sensors over optical fiber." abstract and full text PDF (free order & download UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1460784.
Повний текст джерелаHendrickson, Benjamin William. "Dark Current RTS-Noise in Silicon Image Sensors." PDXScholar, 2018. https://pdxscholar.library.pdx.edu/open_access_etds/4475.
Повний текст джерелаForsberg, Johan. "Mobile robot navigation using non-contact sensors." Doctoral thesis, Luleå tekniska universitet, EISLAB, 1998. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26184.
Повний текст джерелаGodkänd; 1998; 20061122 (haneit)
Afaneh, Akef. "Computational investigations of the electronic structure of molecular mercury compounds: ion-selective sensors." Springer International Publishing AG, 2012. http://hdl.handle.net/1993/30661.
Повний текст джерелаOctober 2015
Collins, Gregory Earl. "New molecular electronic materials: Gas phase chemical sensors and organic molecular beam epitaxy." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/186045.
Повний текст джерелаKamasani, Jyotheesh Reddy, Uday Suhas Nakkapalli, and Sai Jaswanth Yadala. "Arduino Based Home Electronics Labs : Basic- & Advanced-Electronics and Sensors Approaches." Thesis, Blekinge Tekniska Högskola, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20034.
Повний текст джерелаDe, Jager Nicolaas Jacobus. "The investigation and development of gas sensors with carbon nanomaterials." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/17872.
Повний текст джерелаENGLISH ABSTRACT: In this research the possible utilization of carbon nanomaterials in gas sensing applications are investigated. These materials include the 2-dimensional honeycomb-lattice carbon structure called graphene, and the 1-dimensional structures referred to as carbon nanotubes (CNTs). The extraordinary properties and unique morphology of these nanomaterials, make them excellent candidates for sensory applications. This research thus entails the investigation and development of gas sensors with these carbon nanomaterials. This includes the synthesis of CNTs via a chemical vapour deposition (CVD) technique and the fabrication of resistive thin film sensors with the various materials. The functionalization of carbon nanomaterials is also explored, which delivers promising results for sensing gases at room temperature, especially acetylene (C2H2). Furthermore, a unique method is developed to fabricate ultra thin aluminium microstructures. These metallic electrodes are found to be ideal for nanomaterial integration. An experiment is performed to manufacture an integrated sensor with MWCNTs and following the results, a refinement of the procedure and the investigation of FET-based devices are recommended. The results obtained during this work, indicate that engineered carbon nanostructures, such as CNTs and graphene, can potentially be applied in future sensing technologies.
AFRIKAANSE OPSOMMING: Hierdie navorsing ondersoek die moontlike toepassing van koolstof nano-materiale as gas-sensor tegnologie. Hierdie materiale sluit die 2-dimensionele koolstof struktuur, grafeen, asook die sogenaamde 1-dimensionele koolstof nano-buise in. Die buitengewone eienskappe en unieke morfologie van hierdie nano-materiale, maak hul uitstekende kandidate vir sensor toepassings. Hierdie navorsing ondersoek dus die ontwikkeling van gas-sensors met koolstof nano-materiale, insluitend die sintese van koolstof nano-buise deur middel van ’n chemiese damp-neerslag proses, asook die fabrikasie van resistiewe dun film sensors. Die funksionalisering van koolstof nano-materiale is ook ondersoek en belowende resultate is opgelewer met betrekking tot die deteksie van gasse by kamertemperatuur, veral vir asetileen (C2H2) gas. Verder is ’n unieke metode ontwikkel om ultra dun aluminium mikrostrukture te vervaardig en hierdie metaal elektrodes word as ideaal beskou vir die integrasie van nano-materiale. ’n Eksperiment is uitgevoer om ’n geïntegreerde sensor te vervaardig met multi-wand koolstof nano-buise, waarvan die resultate aandui dat die proses verfyn moet word en dat die moontlike toepassing van veld-effek-transistor toestelle ondersoek moet word. Die resultate wat opgelewer is gedurende hierdie navorsing dui daarop dat ontwikkelde nanostrukture, soos koolstof nano-buise en grafeen, as toekomstige sensor tegnologie geïmplementeer kan word.
Martins, Gilmar Antonio dos Santos. "Identificação de plásticos comerciais por meio de um nariz eletrônico baseado em polímeros condutores." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-31052011-152800/.
Повний текст джерелаThis research consists in the development of a new technique capable of the identification of polymeric materials using an electronic nose. Electronic noses have been developed for automatic detection and classification of odors, vapors and gases. They are instruments capable of measuring the concentration or intensity of an odorant similarly to an olfactometer, but without the inherent limitations of the human panel, which is highly desired. The electronic nose is composed by a system of chemoresistive sensors, in this case, an array of four sensors was used, which were made through a deposition of thin films of doped conductive polymers, on the surface of interdigitated electrodes. These sensors were connected to conductivity meters coupled to a personal computer (PC) through AD converters. The PC had acquisition and data processing softwares installed on it. Thirty readings were made or each analyzed polymer consisting of alternated 5 seconds exposure periods and 45 seconds recovery periods. The collected data were statistically processed by Principal Component Analysis (PCA). This electronic nose was efficient, being able to identify nine types of polymeric materials through the analysis of the different volatile compounds released when these materials were heated to the heat of 257ºC. A 100% correct classification score was obtained in the 30 sets of analysis.
Munoz, Torrico Max O. "Experimental characterisation of body-centric radio channels using wireless sensors." Thesis, Queen Mary, University of London, 2012. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8686.
Повний текст джерелаDanzeca, Salvatore. "The new version of the Radiation Monitor system for the electronics at the CERN : electronic components radiation hardness assurance and sensors qualication." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS196/document.
Повний текст джерелаThe measurement of the radiation levels is an essential requirement in the LHC and its injection lines in order to quantify radiation effects on electronics and provide a detailed knowledge of the radiation field. The radiation monitoring system for the electronics at CERN, the “RadMon'', was installed in critical areas where equipment is or will be placed. Issues experienced in the last years of Radmon operation, the obsolescence of a few fundamental components of the electronic board and the necessity to improve both the accuracy and the resolution of measurements led to the launch of a new design of the monitor.This work describes the architecture of the new RadMon (V6), its reliability in radiation environments and the strategy adopted to choose and qualify the sensors, used for monitoring the mixed radiation field of the LHC accelerators. The CERN guidelines were adopted to qualify the RadMon components under radiation in order to develop a new architecture both more tolerant to radiation and more versatile than that of the previous version. In this context, the challenges that radiation tests impose for measuring Single Event Effects (SEUs) on a complex mixed-signal component such as the Analog to Digital converter, led to the development of an innovative test technique, which will be described in this thesis.The reliability of the RadMon measurements strongly depends on the calibration of its sensors. The complex radiation environment of the LHC imposes a peculiar qualification process which will be described and discussed in this work for the RadFets (Total Ionizing Dose sensor) and the SRAM memories (High Energy Hadrons fluence sensor).The use of the RadFet in a mixed field radiation environment has been studied and analyzed by means of 60Co sources as well as proton beams at different energies.The RadFets have been re-calibrated by studying the dose rate, particle sources, temperature, annealing and fading effects as a function of the oxide thickness. Furthermore, thanks to the new architecture of the RadMon, new biasing configurations have been tested to improve the resolution.Two types of SRAM memories with technology nodes of 400 and 90nm have been tested and calibrated by following a strict qualification methodology which includes tests with protons in the range 30-400 MeV, and with neutrons from thermal energies up to intermediate energies (~14 MeV). The 90nm memory improves the accuracy and resolution of the hadron fluence measurement. Moreover, the simultaneous use of both types of memories permits an improvement on the accuracy of the thermal neutron detection with respect to the previous version, as a result of a procedure which will be detailed in this work.The efforts towards the improvement of the TID measurements resolution for the new RadMon lead to the research and study of a new type of dosimeter sensor: the Floating Gate dosimeter (FGDOS). The sensor embeds complex circuitry, thus a full radiation qualification was necessary. Mixed field radiation tests, 60Co and protons tests have been carried out in order to evaluate the performance and the possible issues of the sensor. In this context, an analytical model of the sensor was developed to prove that the floating gate structure can be used as charge yield measurement instrument at room temperature and at low electric fields.The radiation tolerance characterization of the hardware, the qualification and calibration process of the sensors have significantly improved the overall reliability and quality of the measurements of the new RadMon. These improvements turned it into a reference instrument for radiation monitoring of complex mixed fields, such as the one encountered in the LHC, its injectors chain, and other particle physics research centers, such as JLAB in US, J-PARC in Japan
Wu, Chi-Hao. "Enhancing the production performance of automotive sensor assembly lines through the statistical design of experiments." Diss., Online access via UMI:, 2008.
Знайти повний текст джерелаIncludes bibliographical references.