Global ETD Search

31	Autonomous Small Scale Data-logger for Temperature Mapping Gamal Eldin Tawfik, Ahmed 01 January 2015 (has links) Modern manufacturing processes require minimal human intervention and a high degree of automation to meet industry demands. Due to variability in industrial process conditions, custom systems are often sought for these applications. These systems must be compact, economical, and capable of operating under different environmental conditions. This work presents the development, fabrication, testing, and validation of a low cost small scale temperature data-logger used as a monitoring system for automated applications. The proposed system is battery powered and packaged in a manner able to operate in temperatures up to 100oC, with exposure to chemicals such as Isopropyl Alcohol, Propylene Glycol, and De-Ionized water for a period of 2 hours with accuracy of ±0.5oC. The hydration process used for contact lens manufacturing is proposed as a target application for the developed system. The developed system was bench top tested and validated using a convection oven and the three chemicals Propylene Glycol, Isopropyl Alcohol, and De-ionized Water. In addition, the system was tested “in-situ” in the hydration lines of a contact lens manufacturing process. The development process illustrated in this work including the system design, fabrication, and testing can be used as a base to develop the “best fit” monitoring system for multiple other applications. Thesis University of North Florida UNF Autonomous Small scale Temperature Data-logger Electrical and Computer Engineering Electrical and Electronics
32	Automaticky ovládané akvárium pro simulaci klimatických podmínek v deštném pralese / Automatic control of aquarium dedicated to simulation of the conditions in rain forest Petrucha, Martin January 2014 (has links) This work deals with designing complete equipment of paludarium. Selection of individual components to simulate jungle conditions and automate the process of maintaining the forest conditions in a closed environment. All components of the project will be automatically controlled to maintain a user-set conditions inside paludariums. The measured data will be stored on the SD card.
33	<b>RIVER RESTORATION INTELLIGENCE AND VERIFICATION (RRIV): DEVELOPMENT OF A LOW-COST, VERSATILE EMBEDDED SYSTEM FOR BROAD-SCALE MONITORING OF WATER QUALITY AND GREENHOUSE GAS EMISSIONS</b> Ken Yao Chong (16805982) 09 August 2023 (has links) <p>Sensor technology is evolving rapidly, offering new opportunities for environmental data collection. Yet, despite the large number of sensors now available, there is a lack of logging platforms that can be used to operate these sensors in situ. To address this shortfall, River Restoration Intelligence and Verification (RRIV) has developed an environmental data logger that meets the needs of the environmental sensing community. This platform has several advantages that reduce the time, effort, and technical know-how required to deploy environmental sensors. An extensive low-power mode is available, and hardware such as a real-time clock with an independent power source is incorporated. A driver system has been developed that allows users to incorporate sensors into the platform with minimal effort. RRIV loggers also include a command line interface that allows user to add or remove sensors, calibrate sensors, or configure deployments without the need for C/C++ programming, something that is not possible with out-of-the-box microcontrollers such as Arduino and ST Nucleo products. The technology incorporated into RRIV and how it is applied and deployed in the field is described. This includes a description of power consumption. Protocols and descriptions of case construction are also included. RRIV loggers configured to monitor carbon dioxide and methane are used to demonstrate how this platform is used in the field.</p> Analog electronics and interfaces Digital electronic devices Environmental assessment and monitoring Data Logger Water Quality Greenhouse Gas Monitor Environmental Embedded System Embedded System Development
34	THE MOVEMENT PATTERNS AND HOME RANGES OF BLANDING’S TURTLES (EMYDOIDEA BLANDINGII) IN TWO PROTECTED AREAS IN ONTARIO CANADA Christensen, Robert J. 04 1900 (has links) <p>The distribution of Blanding’s turtles in North America is centered on the Great Lakes region, where the impacts from high levels of development have reduced and isolated populations. They are particularly sensitive to habitat loss and fragmentation because of their broad habitat requirements, migratory behaviour, and relatively large seasonal movements and home ranges. Consequently, Blanding’s turtles have been designated a species at-risk throughout the majority of their geographic range. In 2011 we conducted a radio-tracking program to compare the home ranges and movement patterns of Blanding’s turtles in two eco-regions of Ontario that have contrasting habitat and landscape characteristics: Georgian Bay Islands National Park and Rondeau Provincial Park. We also used GPS loggers to supplement data collection by radio-tracking and to evaluate the effectiveness of GPS loggers in tracking the movements of a semi-aquatic species. We found differences in home range between our two study populations that may be linked to landscape features and seasonal differences in movement within the population in Georgian Bay Islands National Park. We also determined that GPS loggers, when used in combination with radio-tracking, can effectively track the movements of Blanding’s turtles with a higher temporal and spatial resolution than by radio-tracking alone. This study highlights the importance of developing management strategies that are tailored to the spatial requirements of distinct populations, and the need for conservation measures that protect aquatic and terrestrial habitat surrounding the main activity centres of Blanding’s turtles.</p> / Master of Science (MSc) Blanding's turtle conservation Emydoidea blandingii GPS logger habitat home range movement patterns radio telemetry Ecology and Evolutionary Biology Terrestrial and Aquatic Ecology Zoology Ecology and Evolutionary Biology
35	Evaluating Near Surface Lapse Rates Over Complex Terrain Using an Embedded Micro-Logger Sensor Network in Great Basin National Park Patrick, Nathan A. 03 October 2014 (has links) No description available. Atmospheric Sciences Geography Geophysical Hydrologic Sciences Hydrology Meteorology Physical Geography Water Resource Management Environmental Science Lapse Rates Great Basin Micro-Logger Micro Logger lascar Specific Humidity Surface Temperatures Complex Terrain mountain geography National Park Hydrology Dry Adiabatic Saturated Adiabatic Environmental Lapse Rate Free Air Calibration
36	Kontaktlös flödesmätning med trådlös dataöverföring : Undersökning av kostnadseffektiva system Svensson, Sonny January 2017 (has links) Målet med undersökningen har varit att undersöka möjligheten att ta fram en kostnadseffektiv lösning för att mäta flöden i slutna rörsystem. Anledningen till att kontaktlösa metoder valts för arbetet är dess egen-skaper att kunna installeras utan att göra ingrepp i ledningarna eller på något sätt påverka det flödande mediet i dessa. Utrustning skall inhand-las och testas i fält. I underökningen ingår det även att ta fram en lämplig metod för att trådlöst överföra insamlat mätdata till valfri IT-miljö och där kunna presentera mätdata på ett översiktligt sätt i ett övervaknings-system samt använda mätdatat till olika statistiska beräkningar. Det hu-vudsakliga applikationsområdet som undersöks är läckageindikering i dricksvattenledningsnät. Anledningen till detta är att många kommuner inte har råd att investera i dyr mätutrustning för övervakning och för dem kan det vara intressant med ett billigt system som är relativt enkelt att installera och implementera i deras befintliga övervakningssystem. Re-sultat av en enkätundersökning som gjorts i samband med undersök-ningen har visat att intresset är stort hos kommunerna, men den visar även att övervakning av vattenledningsnäten med vissa traditionella me-toder kommer att bli svårare i framtiden i och med den stigande andelen plaströr i ledningsnäten. Fälttester av inköpt mätutrustning visar att den skulle kunna implementeras och fungera som flödesövervakning i led-ningsnät. Även fast dess mätnoggrannhet var under det förväntade så vi-sade utrustningen på god linjäritet. / The aim of the survey has been to investigate the possibilities of using a cost-effective solution for measuring flows in closed pipes. Non-intrusive measuring methods are chosen because it’s able to install them without interfering the flow in- or alter- the pipe in any way. Equipment will be purchased and field tested during the time of the survey. The survey also includes investigating suitable methods for wirelessly transmitting col-lected data to an IT-environment, and using measurement data for sur-veillance purposes and various statistical calculations. The main applica-tion area investigated is leakage indication in drinking water pipeline net-works, the reason being that many municipalities can’t afford to invest in expensive measuring equipment and they may be interested in an inex-pensive system that is relatively easy to install and implement in their existing monitoring system. The results of a poll conducted in connection with the survey have shown that there is considerable interest among the municipalities, but it also shows that monitoring of the water supply net-works with traditional methods may become more difficult in the future, the main reason for this seems to be the increasing amount of plastic pipe-lines in the pipeline networks. Field tests of the purchased equipment show that it may be suitable to implement as flow measuring device with the purpose of leakage monitoring, even though its measurement accu-racy was below expected it still shows good linearity. Non-intrusive flow measuring ultrasonic water pipeline net-works leakage detection data logger Kontaktlös flödesmätning ultraljud vattendistribution läck-sökning datalogger Annan elektroteknik och elektronik
37	Improving Photovoltaic Panel Efficiency by Cooling Water Circulation Joseph, Jyothis 12 1900 (has links) This thesis aims to increase photovoltaic (PV) panel power efficiency by employing a cooling system based on water circulation, which represents an improved version of water flow based active cooling systems. Theoretical calculations involved finding the heat produced by the PV panel and the circulation water flow required to remove this heat. A data logger and a cooling system for a test panel of 20W was designed and employed to study the relationship between the PV panel surface temperature and its output power. This logging and cooling system includes an Arduino microcontroller extended with a data logging shield, temperature sensing probes, current sensors, and a DC water pump. Real-time measurements were logged every minute for one or two day periods under various irradiance and air temperature conditions. For these experiments, a load resistance was chosen to operate the test panel at its maximum power point. Results indicate that the cooling system can yield an improvement of 10% in power production. Based on the observations from the test panel experiments, a cooling system was devised for a PV panel array of 640 W equipped with a commercial charge controller. The test data logger was repurposed for this larger system. An identical PV array was left uncooled and monitored simultaneously to compare the effect of cooling, demonstrating that the cooled array provided up to an extra 132W or 20% of maximum power for sunny weather conditions. Future expansion possibilities of the project include automated water level monitoring system and water filtration systems. Maximum power point nominal operating cell temperature temperature coefficient panel temperature solar panel output power efficiency cooling system water circulation data logger water level monitoring heat transfer conduction loss pump controller. Solar panels. Cooling systems.
38	Triggningskriterier i triggningsmodul för trådlösa dataloggern DL141E / Triggering Criteria in Trigger Module for Wireless Data Logger DL141E Jovanovic, Aleksandar, Vu, Cong January 2018 (has links) Dataloggern DL141E möjliggör kontinuerlig loggnig av mätdata från sensorer på upp till 30k sampel/s, som vidare kan överföras till mobiltelefoner via trådlös kommunikation. Detta är dock för stora datamängder per tidsenhet för mobiltelefoner som är tekniskt begränsade. Därför önskas bara relevant mätdata för att reducerar denna onödiga datamängd. I denna studie föreslås ett tillvägagångssätt där enspecifik mindre samling av diskreta försampel loggas i tur och ordning. Varje samling signalbehandlas genom att ställas mot fördefinierade triggningskriterier för att trigga loggning av en stor uppsättning av sampel på bara intressanta signalavvikelser. Dessa triggningskriterier är en särskild nivåöverskridning och signalriktning i kombination med ett antal sampel i följd. Studien förser en granskning av hur signalberäkningsmetoden ”Lebesgue sampling” kan tillämpas med kriterierna för god träffsäkerhet och en skälig beräkningstid i mobiltelefoner. Detta beaktas med dataloggerns vanligaste signaltyper puls och ramp i en miljö där småbrus och transienter förekommer. Träffsäkerheten och beräkningsbördan beaktasför att bedöma Lebesgue metodens effektivitet och antal nödvändiga försampel per uppsättning. Implementeringen görs i Java Android plattform och integreras därefter i en digital triggningsmodul med Graphical User Interface (GUI). / With the data logger DL141E it’s possible to continuously log measurement data from sensors up to 30k samples per second, and then transferring them to a mobile phone with Bluetooth technology. But this is by far too much sample data in a small time for a mobile phone with technical limitations to receive. That’s why only relevant measurement data should be mass logged to reduce the unnecessary data amount. Int his study a new approach is proposed where a specific and smaller amount of discrete pre-samples are logged in sequence. Every set of pre-samples is processed by comparing them to the user pre-defined trigger criterias. Met criterias will trigger logging of a massive set of samples on basis of only interesting signal deviations. The following trigger criterias are used: a specific signal level to cross, a specific signal direction, and both of these in combination with an amount of consecutive samples. The study provides an examination on how the signal processing method ”Lebesgue sampling” can be applied with the above criterias to achieve a god accuracy with reasonable processing time on mobile phones. This is observed using sensors with the most common signal types ramp and pulse in an environment where small noises and transients occur. The accuracy and the processing load are taken into account when estimating the efficiency of Lebesgue method and when estimating how many pre-samples per set might be sufficient. The implementation is written in Java Android platform and then integrated into a digital triggering module with Graphical User Interface (GUI). Data logger DL141E signal processing ramp pulse software triggering criterias pre-samples Lebesgue sampling send on delta Dataloggern DL141E signalbehandling ramp puls mjukvarumässiga triggningskriterier försampel Lebesgue sampling send on delta Signal Processing Signalbehandling Computer Engineering Datorteknik Software Engineering Programvaruteknik
39	Utveckling av en trefaslogger : En kostnadseffektiv trefaslogger med transientdetektering / Developing a three-phase logger : A cost efficient three-phase logger with transient detection Krumlinde Lundvall, Daniel, Odenbrand Linder, Jacob January 2019 (has links) Verktyg som analyserar och detekterar problem på ett trefasnät kan spara tid och minska energiförbrukningen för industrin. Dagens utbud av trefasloggers har antingen ett mycket högt pris eller begränsad funktionalitet. Det här examensarbetet undersökte huruvida en prototyp för en trefaslogger med transientdetektering kunde produceras och säljas för under 4000 SEK. Arbetet innebar i huvudsak elektronikutveckling. Utifrån funktionsundersökningar planerades hårdvaran och komponenter valdes, varpå fullständigt kretsschema och PCB-ritning utvecklades. Resultatet visade att en trefaslogger med transientdetektering kunde tillverkas och säljas för cirka 3300 SEK inkluderat 25% försäljningsmarginal. Arbetet utfördes hos Motion Control i Västerås på efterfrågan av ABB Robotics. / Tools that can analyse and detect problems on a three-phase grid can save time and decrease energy consumption in the industry. The range of products available on today’s market either comes with a steep price, or limited functionality. This thesis examined the possibility of developing and producing a three-phase logger with transient detection, that could be sold for less than 4000 SEK including sales margin. The work mainly consisted of hardware development. The choice of hardware emanated from function analyses, whereupon a complete schematic and PCB-design was developed. The result showed that a three-phase logger with transient detection could be produced and sold for approximately 3300 SEK, including a 25 % sales margin. The thesis was done at Motion Control in Västerås at the request of ABB Robotics. Three-phase logger transient detection energy quality hardware development analysis tool PCB hardware schematic Trefaslogger transientdetektering elkvalitet elektronikutveckling mätinstrument PCB elektronikschema Elektroteknik och elektronik
40	GIS-based Episode Reconstruction Using GPS Data for Activity Analysis and Route Choice Modeling / GIS-based Episode Reconstruction Using GPS Data Dalumpines, Ron 26 September 2014 (has links) Most transportation problems arise from individual travel decisions. In response, transportation researchers had been studying individual travel behavior – a growing trend that requires activity data at individual level. Global positioning systems (GPS) and geographical information systems (GIS) have been used to capture and process individual activity data, from determining activity locations to mapping routes to these locations. Potential applications of GPS data seem limitless but our tools and methods to make these data usable lags behind. In response to this need, this dissertation presents a GIS-based toolkit to automatically extract activity episodes from GPS data and derive information related to these episodes from additional data (e.g., road network, land use). The major emphasis of this dissertation is the development of a toolkit for extracting information associated with movements of individuals from GPS data. To be effective, the toolkit has been developed around three design principles: transferability, modularity, and scalability. Two substantive chapters focus on selected components of the toolkit (map-matching, mode detection); another for the entire toolkit. Final substantive chapter demonstrates the toolkit’s potential by comparing route choice models of work and shop trips using inputs generated by the toolkit. There are several tools and methods that capitalize on GPS data, developed within different problem domains. This dissertation contributes to that repository of tools and methods by presenting a suite of tools that can extract all possible information that can be derived from GPS data. Unlike existing tools cited in the transportation literature, the toolkit has been designed to be complete (covers preprocessing up to extracting route attributes), and can work with GPS data alone or in combination with additional data. Moreover, this dissertation contributes to our understanding of route choice decisions for work and shop trips by looking into the combined effects of route attributes and individual characteristics. / Dissertation / Doctor of Philosophy (PhD) GPS time use diary episode extraction multinomial logit travel behavior mode detection episode reconstruction GIS map-matching route choice path size logit potential path area scale estimation Python ArcGIS activity analysis trip reconstruction smartphone global positioning system geographic information system toolkit work trip shop trip potential activity location land use activity episode travel episode stop episode transferability scalability modularity scripting big data travel survey respondent burden preprocessing multipath error tracking purpose detection segmentation data filter data smoothing fuzzy logic neural network decision tree rule-based algorithm trajectory point road network network dataset gateway shortest path horizontal dilution of precision HDOP commonality factor mode transfer point Halifax Nova Scotia Space-Time Activity Research variance inflation factor shapefile comma-separated values traveling salesman problem data mining branch-and-bound algorithm pedestrian network alternative route observed route route efficiency route attributes distance time heading bearing duration acceleration latitude longitude coordinate overlay analysis intersect shopping module data logger walk likelihood ratio test classification table path generation kappa statistic degrees data collection transportation research automate framework ArcToolbox spatio-temporal navigation positioning trace path spatial data topology horizontal accuracy SPSS Stata spatial resolution temporal resolution household survey trip reporting proximity analysis DMTI Desktop Mapping Technologies Inc. road intersection route overlap left turn right turn location analysis time geography spatial statistics buffer analysis cycling bus transit public transportation GEOIDE AGILE data need raw data urban canyon endpoint data cleaning elevation satellite outliers automatic processing nearest node classifier classification method short trip multi-point

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