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1
Jansson, Martin, e Simon Petersson. "Object detection and single-board computers : En förstudie gjord på Saab AB". Thesis, Linnéuniversitetet, Institutionen för datavetenskap och medieteknik (DM), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-75981.
Testo completoAbstract (sommario):
Saab använder sig i nuläget av ett utdaterat system för att utföra tester av deras produkter. Systemet filmar ur olika vinklar och sammanfogar videoströmmarna till en slutgiltig video, där de sedan kan analysera resultatet av produkten. Enkortsdatorer är något som på senare år har blivit mer och mer populärt, Saab vill därför undersöka om det går att ersätta det äldre systemet med enkortsdatorer och kameror.Det ska undersökas om enkortsdatorn BeagleBoard klarar av att köra objektidentifiering samtidigt som den filmar och utför operationer som videosynkning, videokodning samt sparar den synkade filmen.Undersökningen visade att BeagleBoardens processor inte är tillräckligt kraftfull för att klara av objektidentifieringen utan hårdvarustöd. Istället behöver det utföras av en dator som bearbetar filmen i efterhand och plockar ut objekt. Det har förslagits en bättre metod för att göra objektidentifieringen smartare och lärande som kommer fungera bättre i Saabs fall.Saab is currently using an old and complex system to perform tests of their products. The system is based on filming from different angles which will be merged to one film from which Saab can analyze the results of their products. Single-board computers is something that have become increasingly popular in the recent years, therefore, we are to investigate whether it is possible or not to replace the older systems with SBCs and cameras.We will also investigate whether the BeagleBoard is capable of detecting objects while filming, synchronizing, encoding and saving the video for later use.The result showed that the processor isn’t powerful enough to handle object identification without full hardware support. Instead, it needs to be performed afterwards by a computer which will identify objects in the video. A better method has been proposed to make object identification smarter and learning, which will work better in Saab’s case and their future work.
2
Weber, Nils Thorben. "Satellite Front-End Equipment Based on Consumer Off-The-Shelf Single-Board Computers". Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-397450.
Testo completoAbstract (sommario):
This Master thesis project consists of the exploration and potentially the design and implementation of an Front-End Equipment (FEE) device based on the Beaglebone Black or similar single-board computers. During development and testing of a satellite system, FEE serves to adapt telemetry and telecommand data streams between a satellite and the ground- control system. At OHB Sweden there exist FEE solutions based on old Rabbit processor modules. The two main functions of an FEE device are to forward telemetry data from a satellite to the ground control, and forward telemetry commands from the ground control to the satellite. This thesis explores if it is technically possible and economically feasible to build FEEs from consumer off-the-shelf electronics, and if a similar or better performance than with specialised equipment can be achieved. A prestudy carried out by OHB Sweden showed that the Beaglebone Black is promising, mainly favoured by its two Programmable Realtime Units (PRU). The functions of downlink and uplink are implemented, benchmarked and compared against the project's transmission speed goal. In both cases the speed was greatly affected by the concept of transmission: When the main work was done by the PRU then the overall transmission speed was higher. By having the main task done by the PRU the number and size of messages from PRU to host (vice versa for uplink) can be decreased. The Host-PRU communication is the system's bottleneck. The initially seen potential of the BBB, cannot be confirmed nor refuted completely.
3
Romin, Andreas. "Locks and raspberries: a comparative study of single-board computers for access control". Thesis, Uppsala universitet, Fasta tillståndets elektronik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-296375.
Testo completoAbstract (sommario):
Over the past decade, there has been a drastic development of the single-board computer market. These computers are now in a position where they can compete with classic embedded hardware. Such fast improvement has led ASSA ABLOY, a well-known lock and security company, to see value in replacing some of their existing access control hardware with an off-the-shelf single-board computer. Therefore, a comparative study of single-board computers was performed for this company. Some of the compared properties were price, performance (i.e. CPU, memory, USB, network, operating temperature and power consumption) and other relevant information such as operating systems, open/closed source hardware and future availability. Information and testing data from nine different computers was compiled and analyzed. This data was then used to determine the best-suited candidates that could possibly replace the current access control hardware. They were chosen in accordance to three different categories: performance, power consumption and open source hardware. The ODROID C1+, the Raspberry Pi A+ and the A20 OLinuXino Lime2 proved to be the best candidates for these three categories respectively. Furthermore, it was also concluded that the company behind a computer is just as important as the computer itself, where the best company in this study was determined to be Olimex.
4
Cheng, Tsaichin Daniel 1959. "The implementation of the DEVS hierarchical abstract simulator using 286/10 single board computers". Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276592.
Testo completoAbstract (sommario):
The purpose of this experiment was to implement an alternative mapping realization of the hierarchical abstract simulator on the Intel Multibus 1 microprocessor system. Utilizing three 286/10 single board computers, integration of the M286 monitor with the hierarchical abstract simulator algorithm and execution of the distributed simulator system (DSS) was studied. Seven experiments were done on the DSS showing that the DSS correctly executes the algorithm of the hierarchical abstract simulator. An additional benefit is that parallelism is achieved even without external input: one simulator executes the internal transition function, with other executing the external transition function. This system has demonstrated that the hierarchical abstract simulator concept can be implemented on present-day, available hardware.
5
Andersson, Michael, e Andreas Mickols. "A study of Centralized Network Intrusion Detection System using low end single board computers". Thesis, Högskolan Dalarna, Datateknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:du-25552.
Testo completoAbstract (sommario):
The use of Intrusion Detection Systems is a normal thing today in bigger companies, butthe solutions that are to be found in market is often too expensive for the smallercompany. Therefore, we saw the need in investigating if there is a more affordablesolution. In this report, we will show that it is possible to use low cost single boardcomputers as part of a bigger centralized Intrusion Detection System. To investigate this,we set up a test system including 2 Raspberry Pi 3 Model B, a cloud server and the use oftwo home networks, one with port mirroring implemented in firmware and the other withdedicated span port. The report will show how we set up the environment and the testingwe have done to prove that this is a working solution.
6
Kennedy, Timothy James 1958. "A MULTIPROCESSOR KERNEL AND MONITOR FOR IMAGE PROCESSING APPLICATIONS USING 286/10 SINGLE BOARD COMPUTERS". Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276970.
Testo completo
7
Abade, Pedro António Carvalho. "VR-Banway: deploying a body area network gateway on single-board computers and mesh networks". Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/23569.
Testo completoAbstract (sommario):
Mestrado em Engenharia de Computadores e TelemáticaInternet of Things (IoT) is a generic category of ICT architectures that includes the use of sensor-based, communication-enabled systems. A common architectural element in IoT is the sensors gateway that collects data from nearby sensors and relays them to higher-order remote services. The VR2Market project, in which this work is integrated, uses two implementations of the gateway, based on Android smartphones and RPI boards. With the new proposed IoT-inspired computing module, it is possible to migrate gateways to a smaller, more efficient hardware, while retaining the high-level programming abstraction. In this work, we propose and implement a new version of the gateway, named VR-Banway, using the Intel Edison compute module, taking into consideration the integration with additional service layers in VR2Market system, especially with respect to the required Ad hoc networks support. VR-Banway proved to be a solution capable of replacing the existing gateway component in the VR2Market system. The new approach uses a smaller module, reduces power consumption and is more portable. VR-Banway has been used in the context of firefighters monitoring, but is ready to be deployed in other domains.
A Internet of Things (IoT) é uma categoria genérica das arquiteturas de TIC que inclui o uso de sistemas baseados em sensores e comunicações. Um elemento comum das arquiteturas IoT é o agregador que recolhe dados de sensores nas proximidades e reencaminha-os para serviços remotos de mais alto nível. O projeto VR2Market, no qual este trabalho está integrado, usa duas implementações do agregador de dados, implementados em Android e RPI. Com o novo módulo proposto, inspirado na IoT, é possível migrar os agregadores de dados para dispositivos mais pequenos e mais eficientes mantendo a abstração de programação de alto nível. Neste trabalho, propomos e implementamos uma nova versão do agregador de dados, chamado VR-Banway, usando o módulo computacional Intel Edison, tendo em consideração a integração de novas camadas de serviços no VR2Market, especialmente no que diz respeito ao suporte de redes Ad hoc. VR-Banway provou ser uma solução capaz de substituir o componente de agregador de dados existente no sistema VR2Market. A nova abordagem usa um módulo mais pequeno, reduz o consumo de energia e é mais portátil. VR-Banway foi usado no contexto de monitorização de bombeiros, mas está preparado para ser implementado noutros domínios.
8
Ali, Mohamad Idaly Bin. "Development and implementation of a low-cost data acquisition system using single-board computers to measure volumetric water content". Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119312.
Testo completoAbstract (sommario):
Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2018.Cataloged from PDF version of thesis.
Includes bibliographical references (page 73).
The work described in this thesis is aimed at exploring the use of single-board computers, specifically the Raspberry Pi platform, to measure volumetric water content of soils or other porous media. We first investigated the different methods to condition and measure signal frequencies. Subsequently, we designed and fabricated a Hardware Attached on Top frequency counter add-on board for the Raspberry Pi based on the reciprocal frequency counting method, and found that this accurately and precisely measures frequency signals from water content reflectometers. We then built a dormant deploy-and-forget sensor system around this hardware. The system will be used at our research field site in Brunei Darussalam to measure volumetric water content of peat. Further work focuses on improvements to the encapsulation of the electronic hardware, and designing a multiplexer-controlled relay board to acquire signals from multiple reflectometers simultaneously.
by Mohamad Idaly Bin Ali.
M. Eng.
9
Hobring, Linus, e Philip Söderberg. "A sensor network for the Internet of Things Integrated with a bidirectional backend". Thesis, Blekinge Tekniska Högskola, Institutionen för kommunikationssystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2702.
Testo completoAbstract (sommario):
Internet of Things is rapidly evolving. This thesis includes a study of single-board computers suitable for machine-to-machine communication together with the developing process of a sensor network integrated with a bidirectional communication platform. Raspberry Pi was selected as the single-board computer used in the proposed system. The Message Queuing Telemetry Transport protocol was selected as main communication protocol to handle all exchange of information between the network and the bidirectional communication platform. It was selected because of its reliability, low bandwidth and publish/subscribe architecture. Decision-making procedures were implemented to work with both local sensor data and data from different Message Queuing Telemetry Transport streams, such as GPS data, used to calculate the distance between the user’s smart phone and the office to prepare the workstation, temperature sensors and ambient light sensors controlling Philips HUE light bulbs. The finished sensor network was design to work within office environments to prepare workstations and monitor the work climate. The number of sensors connected to the single-board computer has a major impact in the CPU usage. Measurements and calculations show that 17 connected physical sensors will cause a CPU usage of 96%.
10
Aristotelous, Andreas. "Single Board Computer for Standardized Onboard Vehicle Network". Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188774.
Testo completoAbstract (sommario):
This master thesis project was carried in collaboration with Keolis AB. One of the company’s goals is to seek for a possible replacement to expensive custom hardware units by cheap single board computers. As a test case, a simple application is proposed, which implements driver identification by scanning the barcode of driving license (personnummer). The main objective of this project is to find a suitable single board computer, to implement the proposed driver identification application, to send the driving license number along with the timestamp in a web page and test the functionality of the single board computer according to procedures specified in ISO and IEC standards for road vehicles. A parser that analyzes the input string of a barcode reader was implemented in C programming language. The barcode reader scans a barcode or a QR code and the parser returns the content of the barcode symbol in ASCII character format. The driver license number as well as the timestamp should be published to a web page. A webpage was created using the Django Web Framework, which is a database-driven website. Each time a driving license barcode is scanned, a POST Http request method is performed and both the driving license and timestamp are stored in a SQLite database. Each time a GET request method is performed the data stored in the SQLite database is retrieved and presented in the website. The communication between the single board computer Raspberry Pi and the Django framework is achieved using cURL, which is an open source command line tool and library for transferring data with URL syntax. The data of the website will be manipulated in the backend. Moreover, heat and humidity environmental testing were performed as described in ISO and IEC standards for road vehicles, to evaluate the functionality of the system under certain environmental conditions. These tests showed the working temperature range and the humidity range that the Raspberry Pi can tolerate. As a conclusion, it can be stated that Raspberry Pi can be used in the passenger compartment with expected temperatures to be below 100 Celsius, but not in the engine compartment where temperatures more than 100 Celsius can occur. In addition, Raspberry Pi can perform in all the levels of humidity that has been tested. If it is necessary to be employed in other bus compartment with increased temperature, a more expensive robust embedded single board Linux computer should be chosen. Future work should include vibrations and immunity testing, in order to fully qualify with the ISO and IEC standards. These types of tests are costly and should therefore be performed by automotive manufacturers or other parties who are expected to bear such a cost.Detta examensarbete genomfördes i samarbete med Keolis Sverige AB. Ett av företagets mål är att söka efter möjliga system som ersättning till dyra, specialanpassade hårdvaruenheter och istället övergå till billiga enkortsdatorer. Som ett testfall föreslås ett enkelt program, som genomför identifiering av föraren genom att skanna streckkoden på körkortet (personnummer). Huvudsyftet med projektet är att hitta en lämplig enkortsdator, att implementera den föreslagna föraridentifieringsapplikationen, skicka körkortsnumret/personnumret med tidsstämpel till en webbsida och testa funktionaliteten hos enkortsdator enligt testrutiner som beskrivs av ISO- och IEC-standarder för vägfordon. En parser som analyserar indatasträngen av en streckkodsläsare implementerades i programmeringsspråket C. Streckkodsläsaren skannar en streckkod eller en QR-kod och parsern returnerar innehållet i streckkoden på ASCIIteckenformat. Körkortsnumret samt tidsstämpel publiceras på en webbsida. En webbsida har skapats med Django Web Framework, som är en databasdriven webbplats. Varje gång körkortets streckkod skannas, skickas en POST http-begäransmetod som utförs varvid både körkort och tidsstämpel lagras i en SQLite databas. Varje gång en GET-begäran skickas, lagras data i SQLite databasen och presenteras på webbplatsen. Kommunikationen mellan enkortsdatorn Raspberry Pi och ett Django-ramverk uppnås med hjälp av cURL, som är ett kommandoradsverktyg med öppen källkod, och ett bibliotek för att överföra data med URL-syntax. Uppgifterna på webbplatsen manipuleras i backend. Miljötålighetsprovning med avseende på värme- och fuktighet har utförts för att utvärdera systemets funktionalitet under specifika miljöförhållanden. Testerna specificeras i ISO- och IEC-standarder för vägfordon. Dessa tester visade vilka arbetstemperaturer och vilken luftfuktighet som Raspberry Pi klarar. Det kan konstateras att Raspberry Pi kan användas i passagerarutrymmet, där temperaturen förväntas ligga under 100 Celsius, men inte i motorrummet där temperaturer högre än 100 Celsius kan förekomma. Vidare har Raspberry Pi visat sig fungera vid de nivåer av luftfuktighet som har förkommit i testerna. I de fall där systemet skall användas i miljöer med högre temperaturer bör en dyrare och mer robust inbyggd (embedded) Linux-enkortsdator väljas. Det framtida arbetet bör omfatta vibrations- och elstörningstester för att fullt ut säkerställa att systemet klarar gällande ISO- och IEC-standarder. Dessa typer av test är kostsamma och bör därför genomföras av fordonstillverkare eller andra aktörer som förväntas kunna bära en sådan kostnad.
11
Agne, Arvid. "Provisioning, Configuration and Monitoring of Single-board Computer Clusters". Thesis, Linnéuniversitetet, Institutionen för datavetenskap och medieteknik (DM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-97853.
Testo completoAbstract (sommario):
Single-board computers as hardware for container orchestration have been a growing subject. Previous studies have investigated their potential of running production-grade technologies in various environments where low-resource, cheap, and flexible clusters may be of use. This report investigates the appliance of methods and processes prevalent in cluster, container orchestration, and cloud-native environments. The motivation being that if single-board computers are able to run clusters to a satisfactory degree, they should also be able to fulfill the methods and processes which permeate the same cloud-native technologies. Investigation of the subject will be conducted through the creation of different criteria for each method and process. They will then act as an evaluation basis for an experiment in which a single-board computer cluster will be built, provisioned, configured, and monitored. As a summary, the investigation has been successful, instilling more confidence in single-board computer clusters and their ability to implement cluster related methodologies and processes.
12
Nematbakhsh, Mohammadali. "TCP/IP PROTOCOL BOARD USING SINGLE CHIP PROCESSOR". Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275389.
Testo completo
13
Valach, Lukáš. "Bezpečnostní a monitorovací systém rodinného domu". Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2016. http://www.nusl.cz/ntk/nusl-255463.
Testo completoAbstract (sommario):
The thesis elaborates on an implementation of wireless home security system. The wireless communication utilizes IEEE 802.15.4 radios and ZigBee communication protocol. The beginning of the thesis provides specification of the intended system followed by an evaluation of usable energy harvesting solutions and later by consideration of single board computer systems suitable for implementation of the control node of the sensor network. The rest of the thesis describes design, implementation and testing of particular components of the security system. Conclusion evaluates the achieved goals and offers suggestions for future work. The end products of the thesis are physical devices implementing wireless sensor nodes, control unit of the security system as well as a graphical user interface for the system management.
14
Herbst, Dewald. "Single board computer based control of an active magnetic bearing / by Dewald Herbst". Thesis, North-West University, 2008. http://hdl.handle.net/10394/2641.
Testo completoAbstract (sommario):
The McTronX Research group at the North-West University is currently conducting research in the use of active magnetic bearings (AMBs) for a flywheel energy storage system (FESS). Together with this, the aim of this project is to take the level of control of such AMB systems to an industrial level. Instead of using a rapid prototype dSPACE® controller, a single board computer (SBC) is proposed. Issues to be addressed, includes: SBC overview, control system specifications, skills development for SBC, implementation and evaluation.
All the digital and analogue input/output signal requirements for the FESS are determined prior to specifying an SBC. Six different SBCs were compared and in the end the SBC6713ell from Innovative Integration (II) was chosen and sourced. The SBC6713ell complies with all the requirements specified by the client.
Two interface boards were used to integrate the SBC with the FESS. The first board contained all the protection circuitry to protect the controller from faults that could occur on the sensor and actuator side of the FESS and is used to connect the dSPACE® to the FESS without the SBC. After the hardware was integrated, the software/firmware integration started. On the SBC, the PD control was implemented for the AMBs as well as the voltage over frequency control for the PMSM. A graphical user interface (GUI) was further developed on a host computer to monitor the FESS.
Four tests were done on the integration of the SBC with the FESS. Firstly the performance of the controller with regard to the control algorithms was tested. The stability and sensitivity analyses of the system followed and ended with the PMSM start-up test. The control algorithm execution time was longer than expected and adjustments to the sampling time had to be made. Stability tests showed a decrease in bearing stiffness and damping, which was due to low pass filters on the analogue to digital converter board. The sensitivity of the system also increased due to the effect of the filters on the system.
The inconsistency in bearing damping and stiffness, obtained from the stability tests was verified by adding the filters to the simulation. These filters caused an attenuation of less than 1 dB, but resulted in a phase shift of -36.3° in the control loop.
Industrial control was realised using an SBC, but further work is still necessary. The areas identified for future work is: non linear control algorithms, low noise digital power amplifiers, speed sensor and the PMSM drive.Thesis (M.Ing. (Electrical and Electronic Engineering))--North-West University, Potchefstroom Campus, 2008.
15
WoldeMichael, Helina Getachew. "Deployment of AI Model inside Docker on ARM-Cortex-based Single-Board Computer : Technologies, Capabilities, and Performance". Thesis, Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-17267.
Testo completoAbstract (sommario):
IoT has become tremendously popular. It provides information access, processing and connectivity for a huge number of devices or sensors. IoT systems, however, often do not process the information locally, rather send the information to remote locations in the Cloud. As a result, it adds huge amount of data traffic to the network and additional delay to data processing. The later feature might have significant impact on applications that require fast response times, such as sophisticated artificial intelligence (AI) applications including Augmented reality, face recognition, and object detection. Consequently, edge computing paradigm that enables computation of data near the source has gained a significant importance in achieving a fast response time in the recent years. IoT devices can be employed to provide computational resources at the edge of the network near the sensors and actuators. The aim of this thesis work is to design and implement a kind of edge computing concept that brings AI models to a small embedded IoT device by the use of virtualization concepts. The use of virtualization technology enables the easy packing and shipping of applications to different hardware platforms. Additionally, this enable the mobility of AI models between edge devices and the Cloud. We will implement an AI model inside a Docker container, which will be deployed on a FireflyRK3399 single-board computer (SBC). Furthermore, we will conduct CPU and memory performance evaluations of Docker on Firefly-RK3399. The methodology adopted to reach to our goal is experimental research. First, different literatures have been studied to demonstrate by implementation the feasibility of our concept. Then we setup an experiment that covers measurement of performance metrics by applying synthetic load in multiple scenarios. Results are validated by repeating the experiment and statistical analysis. Results of this study shows that, an AI model can successfully be deployed and executed inside a Docker container on Arm-Cortex-based single-board computer. A Docker image of OpenFace face recognition model is built for ARM architecture of the Firefly SBC. On the other hand, the performance evaluation reveals that the performance overhead of Docker in terms of CPU and Memory is negligible. The research work comprises the mechanisms how AI application can be containerized in ARM architecture. We conclude that the methods can be applied to containerize software application in ARM based IoT devices. Furthermore, the insignificant overhead brought by Docker facilitates for deployment of applications inside a container with less performance overhead. The functionality of IoT device i.e. Firefly-RK3399 is exploited in this thesis. It is shown that the device is capable and powerful and gives an insight for further studies.
16
Yeo, Cheow Fatt. "Addition of built-in self-testing capability to the Intel SBC 80/10A single board computer". Thesis, Kansas State University, 1986. http://hdl.handle.net/2097/14155.
Testo completo
17
Miček, Adam. "Raspberry Pi: inteligentní dveřní kukátko". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-416613.
Testo completoAbstract (sommario):
The goal of this diploma thesis is to create the functional prototype of intelligent peephole (video doorman) on Raspberry Pi 3B+ platform. It will support face recognition of the people, alternatively authorization by QR code and the record of the situations in form of picture, video, and text. Furthermore, it will allow remote control from Android application with possibility to see live stream of Raspberry Pi’s video in this application. Creation of the project is preceded by brief introduction of Raspberry Pi platform, its alternatives and process of face recognition. Python programming language was primarily used for software development on Raspberry Pi platform. Two approaches were used for image processing, direct processing on Raspberry Pi and on more powerful computer. This work describes use of various modern libraries, platforms, and frameworks, used during the creation of the project, with goal to provide beginners in this field insight into this technology, way of its use, and offer starting point for further work.
18
Ferretti, Francesco. "Architettura cloud per lo sviluppo multi-piattaforma di Sistemi Operativi: Applicazioni specifiche". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10901/.
Testo completoAbstract (sommario):
Il mondo dell’Internet of Things e del single board computing sono settori in forte espansione al giorno d’oggi e le architetture ARM sono, al momento, i dominatori in questo ambito.
I sistemi operativi e i software si stanno evolvendo per far fronte a questo cambiamento e ai nuovi casi d’uso che queste tecnologie introducono.
In questa tesi ci occuperemo del porting della distribuzione Linux Sabayon per queste architetture, la creazione di un infrastruttura per il rilascio delle immagini e la compilazione dei pacchetti software.
19
Foschi, Davide. "Sviluppo di una piattaforma software per applicazioni di monitoraggio di parametri vitali basate su tecnologie wearable e mobile". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9244/.
Testo completoAbstract (sommario):
L'obiettivo della tesi è quello di sviluppare una piattaforma software a supporto della programmazione di applicazioni mobile per la rilevazione di parametri vitali.
Questo caso di studio offre una ampia discussione su wearable computing, healthcare e prototipazione del wearable.
La tesi va a descrivere tutte le fasi di analisi, modellazione e progettazione del sistema, evidenziando problematiche e soluzioni adottate.
20
Einestam, Ragnar, e Karl Casserfelt. "PiEye in the Wild: Exploring Eye Contact Detection for Small Inexpensive Hardware". Thesis, Malmö högskola, Fakulteten för teknik och samhälle (TS), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20696.
Testo completoAbstract (sommario):
Ögonkontakt-sensorer skapar möjligheten att tolka användarens uppmärksamhet, vilketkan användas av system på en mängd olika vis. Dessa inkluderar att skapa nya möjligheterför människa-dator-interaktion och mäta mönster i uppmärksamhet hos individer.I den här uppsatsen gör vi ett försök till att konstruera en ögonkontakt-sensor med hjälpav en Raspberry Pi, med målet att göra den praktisk i verkliga scenarion. För att fastställaatt den är praktisk satte vi upp ett antal kriterier baserat på tidigare användning avögonkontakt-sensorer. För att möta dessa kriterier valde vi att använda en maskininlärningsmetodför att träna en klassificerare med bilder för att lära systemet att upptäcka omen användare har ögonkontakt eller ej. Vårt mål var att undersöka hur god prestanda vikunde uppnå gällande precision, hastighet och avstånd. Efter att ha testat kombinationerav fyra olika metoder för feature extraction kunde vi fastslå att den bästa övergripandeprecisionen uppnåddes genom att använda LDA-komprimering på pixeldatan från varjebild, medan PCA-komprimering var bäst när input-bilderna liknande de från träningen.När vi undersökte systemets hastighet fann vi att nedskalning av bilder hade en stor effektpå hastigheten, men detta sänkte också både precision och maximalt avstånd. Vi lyckadesminska den negativa effekten som en minskad skala hos en bild hade på precisionen, mendet maximala avståndet som sensorn fungerade på var fortfarande relativ till skalan och iförlängningen hastigheten.Eye contact detection sensors have the possibility of inferring user attention, which can beutilized by a system in a multitude of different ways, including supporting human-computerinteraction and measuring human attention patterns. In this thesis we attempt to builda versatile eye contact sensor using a Raspberry Pi that is suited for real world practicalusage. In order to ensure practicality, we constructed a set of criteria for the system basedon previous implementations. To meet these criteria, we opted to use an appearance-basedmachine learning method where we train a classifier with training images in order to inferif users look at the camera or not. Our aim was to investigate how well we could detecteye contacts on the Raspberry Pi in terms of accuracy, speed and range. After extensivetesting on combinations of four different feature extraction methods, we found that LinearDiscriminant Analysis compression of pixel data provided the best overall accuracy, butPrincipal Component Analysis compression performed the best when tested on imagesfrom the same dataset as the training data. When investigating the speed of the system,we found that down-scaling input images had a huge effect on the speed, but also loweredthe accuracy and range. While we managed to mitigate the effects the scale had on theaccuracy, the range of the system is still relative to the scale of input images and byextension speed.
21
Klečka, Jan. "Monitorovací sonda síťové komunikace". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442398.
Testo completoAbstract (sommario):
Master thesis deals with analysis of single board PC which use Linux as operation system. Analysis of individual NIDS systems and examined their properties for choosing right candidate for single board computer which shall be used as network probe for analysis, filtering and logging of network traffic. Part of the work is aimed on development of a interface which is used for configuration of network probe through the web browser. Web interface allows perform basic operations over network probe which influence network traffic or specify, which information shall be logged. Subsequently network parsers were implemented for network protocols using the Scappy library. The conclusion of the thesis contains the design of the security cover for the device according to the IP54 requirements.
22
Cozinheiro, João Lucas Neves. "Onboard image processing in drones". Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17153.
Testo completoAbstract (sommario):
Mestrado em Engenharia Electrónica e TelecomunicaçõesA visão e um dos mais importantes sentidos humanos. Desde que nasce, um humano tem a capacidade de guardar um grande número de imagens na sua memória, criando padrões ao longo do tempo que o permitem diferenciar coisas. No entanto, o mesmo processo não é assim tão simples quando comparado a sistemas computacionais. Apesar da complexidade do processamento de imagens através de computadores, hoje em dia, as máquinas usam câmaras digitais como seus principais sensores. Mais recentemente, um tipo de robot tem vindo a destacar-se: os drones, também conhecidos por veículos aéreos não tripulados. De modo a processar imagens, os drones têm consigo uma unidade computacional destinada a esse m. Esta tese estuda a e ciência de vários microcomputadores no uso de processamento de imagem. Os resultados experimentais permitem ver que é possível integrar um destes sistemas num drone permitindo um processamento de imagem em tempo real. O caso de estudo escolhido para esta tese destina-se a monitorizar parques de estacionamento usando um drone. O drone tem a missão de voar sobre o parque e recolher algumas imagens. De seguida, estas irão ser processadas pelo microcomputador a bordo, detectando e contando quantos carros existem num parque de estacionamento num dado momento.
The sight is one of the most important human senses. Since we were born, the human collects a great amount of image data that, throughout time, creates object standards that allow differentiate things. Nevertheless, the same is not so simple using computers. Despite the difficulty of process images using computers, robots use nowadays digital cameras as main sensors. More recently, one type of robots is gathering more attention: Drones, also known by unmanned aerial vehicle. In order to process digital images, drones have to have a computational unit. This thesis studies the efficiency of several single-boards computers when used to process digital images. Experimental results shows that it is possible to have a single-board attached to the drones allowing real-time image processing. The case study chosen for this thesis is to use a drone to monitor parkings. The drone has the mission of ying above it and take images. Then, the single-board will process the images and try to detect cars on it, counting the total number of cars on parking car.
23
Milicic, Gregory J. "Analysis of hardware requirements for airborne tactical mesh networking nodes". Thesis, Monterey California. Naval Postgraduate School, 2005. http://hdl.handle.net/10945/2218.
Testo completoAbstract (sommario):
Approved for public release, distribution is unlimitedWireless mesh mobile ad hoc networks (MANETs) provide the military with the opportunity to spread information superiority to the tactical battlespace in support of network-centric warfare (NCW). These mesh networks provide the tactical networking framework for providing improved situational awareness through ubiquitous sharing of information including remote sensor and targeting data. The Naval Postgraduate School's Tactical Network Topology (TNT) project sponsored by US Special Operations Command seeks to adapt commercial off the shelf (COTS) information technology for use in military operational environments. These TNT experiments rely on a variety of airborne nodes including tethered balloon and UAVs such as the Tern to provide reachback from nodes on the ground to the Tactical Operations Center (TOC) as well as to simulate the information and traffic streams expected from UAVs conducting surveillance missions and fixed persistent sensor nodes. Airborne mesh nodes have unique requirements that can be implemented with COTS technology including single board computers and compact flash.
Lieutenant, United States Navy
24
Chen, Hsin-Ho, e 陳信合. "IOT development platform - ASA bus single board computer development". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/4mpj66.
Testo completoAbstract (sommario):
碩士國立中央大學
光機電工程研究所
105
Internet of Things (IoT) is a very important role at developing automation. It can do lots of important jobs. For example, gathering and analyzing big data. Then develop artificial intelligence by the results from analysis. So it can build an automated system without human beings. The purpose of this paper is develop an easy-to-use IoT system and a single board computer as the core of the IoT system. Then people can keep developing the IoT system established in the paper with the single board computer. This paper refers some article about current development trend and the research direction of IoT from IEEE IoT Journal. And gathers some features of the popular single board computers from their official web site. Compare their features about CPU selection, real-time, etc. And using the information to improve the new IoT system. There will be a giant amount of hardware used in a IoT system. So, there should be a quality testing system that can handle a big amount of the objects. This paper applies the new IoT system to design an easy-to-use quality testing system. And it can save lots of time to the process.
25
JIAN, YAN-YUAN, e 江衍源. "Intergration of AT bus and multibus in a single board computer". Thesis, 1991. http://ndltd.ncl.edu.tw/handle/78700029769130036561.
Testo completo
26
Wei, Tsao Yang, e 魏早陽. "Business Plan - RadiumAn Open-Source Single Board Computer with Cellular Connectivity". Thesis, 2019. http://ndltd.ncl.edu.tw/handle/mz3qb8.
Testo completo
27
Chong, Wai-Lam, e 張偉霖. "The deployment and application of ARM single board computer virtual cluster". Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107NCHU5507016%22.&searchmode=basic.
Testo completoAbstract (sommario):
碩士國立中興大學
應用數學系所
107
With the increasing awareness and use of artificial intelligence, it has become a concern for the integration of artificial intelligence into ARM single board computer. Not only that, more and more national networks are making progress on ARM server-class processors, resulting in a gradual shortening of the gap between ARM processors computational capability and x86 processors computational capability. The focus of this paper is on how to build a cluster with ARM single board computers with a customized operating system, and deploy virtual clusters on the cluster and provide deep learning frameware in virtual clusters. In order to set up a customized operating system and software environment on the ARM single board computer, we combined virtualization technology and cross compilation technology to deploy a virtual machine on AMD processor computer. Therefore, Boot loader and Linux kernel can be successfully implemented through the virtual machine, and the Devuan operating system can be successfully deployed on the ARM single board computer. This article also solves the problem of the inability to compile software on ARM single board machines due to insufficient hardware resources through cross-platform virtualization technology application. Virtualization technology is used to create a cross-platform operating system virtual machine on an AMD processor computer, thereby making the software for the ARM single board computer. In addition, virtualization technology is used to build cluster, virtual machines, and virtual machine cluster on ARM single board computer. Finally, the ARM software environment image produced by the cross-platform is used to quickly apply to the virtual cluster through the virtualization technology. And running Caffe on different platform virtual machines to train handwritten digit recognition module with MNIST database, and recording the power consumption with the current display power distributor. The experimental results show that the ARM single board computer is greener than AMD processor computer.
28
朱彥旬. "A development environment for single-board computer with digital signal process capabilities". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/64557741445817873805.
Testo completo
29
Chen, Tsu-Huei, e 陳祖暉. "TMS320C32 Single Board Computer Based Auto-Tuning Controller for Permanent Magnet Synchronous Motor". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/51849408445297687095.
Testo completoAbstract (sommario):
碩士中原大學
電機工程研究所
90
The purpose of this thesis is to develop an intelligent controlled servo drive system for a permanent magnet synchronous motor (PMSM) to achieve precision control with robustness based on TMS320C32 digital signal processor (DSP). First, a field-oriented PMSM servo drive system which consists of a ramp comparison, a current-controlled PWM VSI, a field-oriented mechanism and protect circuits are implemented. Next, a DSP control board is developed to implement the field-oriented mechanism and coordinate transfermation. Then, an integral-proportional (IP) position controller is introduced to control the rotor position of the PMSM. The IP position controller is designed according to the rotor mechanical parameters to match the time-domain command tracking specifications. Moreover, to maintain the control performance of the PMSM drive system under the occurrence of parameter variations and external disturbance, a compensator based on recurrent fuzzy neural network (RFNN) and an IP control system with on-line gain tuning using RFNN are both proposed to match the periodic step command tracking specifications and to increase the robustness of the PMSM drive system. Finally, the effectiveness of the proposed control schemes is demonstrated by some simulated and experimental results.
30
Wang, Yu-Ching, e 王諭卿. "IoT device ASA-bus single board computer automatic quality testing and firmware development". Thesis, 2018. http://ndltd.ncl.edu.tw/handle/cje9wf.
Testo completoAbstract (sommario):
碩士國立中央大學
光機電工程研究所
106
There are two stages in the thesis：Automatic Testing System and Arduino System Simulator. Automatic Testing System uses Reed Relays switching nets with twelve channels, which arranges the testing procedure and switches channels with testing and procedure arrangement code, and realizes ability testing of the Internet of Things (IoT) devices of ASA. As a result, enhance the efficiency of quality controlling and maintaining, and improve the benefit. Arduino System Simulator provides the library compatibility with Arduino, which can program Arduino special function in AVR integrated development environment (IDE). Furthermore, user can replace Arduino functional PIN with ASA device and increase PIN number by using PIN Map Programing Software. Hoping that could make it easy for Arduino user using ASA system, and being satisfied of having more advanced functions and applications in ASA system. In verification design chapter in the thesis, we design four verification experiments, including of twelve channel switching, ASA-BUS function, small amount of quality control, and benefit and cost, to prove the realization and benefit of Automatic Testing System.
31
Roper, Justin R. "On-board Single Photon Emission Computed Tomography (SPECT) for Biological Target Localization". Diss., 2010. http://hdl.handle.net/10161/2986.
Testo completoAbstract (sommario):
On-board imaging is useful for guiding radiation to patients in the treatment position; however, current treatment-room imaging modalities are not sensitive to physiology - features that may differentiate tumor from nearby tissue or identify biological targets, e.g., hypoxia, high tumor burden, or increased proliferation. Single photon emission computed tomography (SPECT) is sensitive to physiology. We propose on-board SPECT for biological target localization.
Localization performance was studied in computer-simulated and scanner-acquired parallel-hole SPECT images. Numerical observers were forced to localize hot targets in limited search volumes that account for uncertainties common to radiation therapy delivery. Localization performance was studied for spherical targets of various diameters, activity ratios, and anatomical locations. Also investigated were the effects of detector response function compensation (DRC) and observer normalization on target localization. Localization performance was optimized as a function of iteration number and degree of post-reconstruction smoothing. Localization error patterns were analyzed for directional dependencies and were related to the detector trajectory. Localization performance and the effect of the detector trajectory were investigated in a hardware study using a whole-body phantom.
Typically targets of 6:1 activity were localized as accurately using 4-minute scans as those of 3:1 activity using 20-minute scans. This trend is consistent with the relationship between contrast and noise in the contrast-to-noise ratio (CNR) and implies that higher contrast targets are better candidates for on-board SPECT because of time constraints in the treatment room. Using 4-minute scans, mean localization errors were within 2 mm for superficial targets of 6:1 activity that were proximal to the detector trajectory and of at least 14 mm in diameter. Localization was significantly better (p < 0.05, Wilcoxon signed-rank test) with than without observer normalization and DRC at 5 of 6 superficial tumor sites. Observer normalization improved localization substantially for a target proximal to the much hotter heart. Localization error patterns were shown to be anisotropic and dependent on target position relative to the detector trajectory. Detector views of close approach and of minimal attenuation were predictive of directions with the smallest (magnitude) localization bias and precision. The detector trajectory had a substantial effect on localization performance. In scanner-acquired SPECT images, mean localization errors of a 22-mm-diameter superficial target were 0.8, 1.5, and 6.9 mm respectively using proximal 180°, 360°, and distal 180° detector trajectories, thus demonstrating the benefits of using a proximal 180° detector trajectory.
In conclusion, the potential performance characteristics of on-board SPECT were investigated using computer-simulation and real-detector studies. Mean localization errors < 2 mm were obtained for proximal, superficial targets with diameters >14 mm and of 6:1 activity relative to background using scan times of approximately 5 minutes. The observed direction-dependent localization errors are related to the detector trajectory and have important implications for radiation therapy. This works shows that parallel-hole SPECT could be useful for localizing certain biological targets.
Dissertation
32
Jian, Han-Jia, e 簡漢嘉. "Gait Planning and Control of a Single Board Computer Based Quadruped Robot Crossing a Discontinuous Terrain". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/76526854760295749954.
Testo completoAbstract (sommario):
碩士國立交通大學
機械工程學系
98
This study focused on developing a quadruped robot system NC-F4-2010 which could autonomous across discontinuous terrain. The quadruped robot contains an embedded single board computer (DM&P RoBoard RB-100) and a servo controller. We have successfully installed the Windows Embedded System on the single board computer to control the autonomous quadruped robot. The new developed quadruped robot uses the single board computer as the main local controller, instead of a desktop PC, and uses servo motors as actuators to drive the four legs to move. The experimental platform also integrates several softwares for implementing motion control, image processing etc. The new quadruped robot NC-F4-2010 is a new prototype, according to the design of the robot NC-F4-09. The NC-F4-09, designed by our laboratory, has 12 servo motors mounted on the four legs. In this study, the new robot's main controller is replaced by DM&P RoBoard RB-100 single board computer, instead of the original Basic Atom single chip. The single board computer can communicate with various types of device such as wireless network card through USB interface. The servo Controller SSC-32 with implements the command from the single board computer to control the servo motor’s action via the interface of RS232. In the study, the new robot system NC-F4-2010 has successfully demonstrated autonomous motion ability crossing a so called River-stone discontinuous terrain. The terrain pattern identified module of the robot-system provides the function of image capture and terrain recognition. The system can execute the developed path generating MATLAB program to calculate the gait processes of the quadruped robot through the terrain. The path generating program designed by our laboratory has integrated with motion control module. The servo controllers perform the action of gait processes and drive the robot cross the discontinuous terrain. The results of these tests have proved the robot current developed theory and quadruped robot system can successfully perform an autonomous robot motion across a River-stone discontinuous terrain.
33
郭家瑞. "Improved Monte Carlo Localization with Robust Orientation Estimation for Mobile Robots and Its Realization on Single-Board Computer". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/84423351541989740202.
Testo completoAbstract (sommario):
碩士國立臺灣師範大學
電機工程研究所
102
This paper proposes an improved Monte Carlo Localization algorithm with robust orientation estimation (IMCLROE) by incorporating an orientation estimate and weight calculation mechanism to determine an optimal orientation for particles and a particles size balancing mechanism to regulate the number of particles for position tracking and global localization. Based on previously established sensory information, the proposed IMCLROE can improve the computational efficiency of robot localization. Position tracking accuracy and global localization successful rate are also significantly improved while maintaining a minimal population of particles. Simulation and experimental results have confirmed the effectiveness of the proposed approach.
34
(5930723), Kristina D. Lister-Gruesbeck. "FEASIBILITY STUDY USING BLOCKCHAIN TO IMPLEMENT PROOF OF LOCATION". Thesis, 2019.
Cerca il testo completoAbstract (sommario):
The purpose of this thesis is to determine the feasibility of using blockchain to implement proof
of location. There has been an increasing demand for a way to create a validated proof of location
that is economical, and easy to deploy as well as portable. There are several reasons for an
increased demand in this technology including the ever-increasing number of mobile gamers that
have been able to spoof their location successfully, the increasing number of on demand package
shipments from companies such as Amazon, and the desire to reduce the occurrence of medical
errors as well as holding hospitals accountable for their errors. Additional reasons that this
technology is gaining popularity and increasing in demand is due the continually increasing
number of lost baggage claims that airlines are receiving, as well as insurance companies desire to
reduce the number of fraud cases that are related to high-value goods as well as increasing the
probability of their recovery. Within the past year, there has been an extensive amount of research
as well as work that has been completed to create an irrefutable method of location verification,
which will permit a user to be able to create time-stamped documentation validating that they
were at a particular location at a certain day and time. Additionally, the user is then permitted to
release the information at a later date and time that is convenient for them. This research was
completed using a Raspberry Pi 3B, a Raspberry Pi 3B+, two virtual Raspberry Pi’s as well as
two virtual servers in which the goal was to download, and setup either Ethereum and/or
Tendermint Blockchain on each piece of equipment. After completely synchronizing the
blockchain it be used to store the verified location data that been time-stamped. There was a
variety of issues that were encountered during the setup and installation of the blockchains on the equipment including overclocking processors, which negatively affected the computational
abilities of the devices as well as causing overheating and surges in voltage as well as a variety of
software and hardware incompatibilities. These issues when looked at individually appear to not
have much of an impact on the results of this research but when combined together it is obvious
that they reduced the results that could be obtained. In conclusion, the combination of hardware
and software issues when combined with the temperature and voltage issues that were due to the
overheating of the processor resulted in several insurmountable issues that could not be
overcome. There are several recommendations for continuing this work including presyncing the
blockchain using a computer, using a device that has more functionality and computational
abilities, connecting a cooling device such as a fan or adding a heat sink, increasing the available
power supply, utilizing an externally power hard drive for data storage, recreate this research with
the goal in mind of determining what process or application was causing the high processor
usage, or creating a distributed system that utilizes both physical and virtual equipment to reduce
the amount of work on one type of device.
35
Ribeiro, Nuno Filipe Frutuoso. "Visualização de dados sensoriais em aplicações de Realidade Aumentada". Master's thesis, 2014. http://hdl.handle.net/10348/3149.
Testo completoAbstract (sommario):
Dissertação de Mestrado em Comunicação e MultimédiaO dia-a-dia é afetado pela constante evolução tecnológica. Uma tecnologia que tem vindo a ganhar destaque explora a interatividade em tempo real, com a criação de sistemas que possibilitam a substituição de grande parte ou até mesmo toda a experiência do utilizador no espaço físico. Esta tecnologia, denominada Realidade Virtual (RV), deu origem à Realidade Aumentada (RA) que, ao invés da RV, não procura substituir a totalidade do mundo real mas sim completá-lo, sobrepondo-lhe objetos virtuais. A motivação desta dissertação surge da perceção da inexistência de um sistema que interligue RA, dispositivos móveis e sistemas de aquisição de dados sensoriais e, visto esta ser uma área pouco explorada, entende-se ser um trabalho que bem explorado pode originar um sistema com bastante interesse e utilidade para o utilizador. Desta forma, o objetivo deste trabalho é a criação de um sistema que interligue estas três tecnologias: RA, dispositivos móveis e sistemas de aquisição de dados sensoriais. Neste trabalho fez-se o planeamento de um sistema de visualização de dados sensoriais em aplicações de RA para dispositivos móveis, composto por três componentes: contextualização sensorial, gestão de dados sensoriais e visualização de modelos virtuais contextualizados. Estes componentes estão responsáveis, respetivamente, pela aquisição de dados sensoriais de contexto, gestão dos dados adquiridos e pela visualização dos mesmos em modelos virtuais apresentados na aplicação executada no dispositivo móvel, influenciando ou condicionando o rendering desses modelos virtuais. Depois do planeamento do sistema, foi concebido e desenvolvido um sistema com as características já referidas e este foi testado num caso de uso, através da implementação de um protótipo de uma sala e da utilização de dois parâmetros sensoriais: intensidade de iluminação e temperatura. Contudo, o componente de contextualização sensorial foi simulado, tendo sido criado uma plataforma web que simula as aquisições dos dados através de botões, ao invés da sua aquisição no espaço físico. Após a sua conceção, os resultados obtidos foram os pretendidos: influenciar ou condicionar a visualização de modelos virtuais baseados nos valores sensoriais de contexto utilizados, sendo possível alterar a iluminação de um candeeiro presente no modelo virtual com base no valor atual da iluminação simulada e da alteração das texturas desse modelo virtual de acordo com a temperatura atual, sendo utilizados cinco intervalos de temperatura: muito frio, frio, normal, quente e muito quente, aos quais estão associadas as cores azul-escuro, azul, verde, laranja e vermelho, respetivamente. Desta forma, após a conclusão deste caso de estudo, mostrou-se que é possível condicionar a visualização de um determinado modelo virtual através da utilização de parâmetros de entrada sensorial, relativos ao contexto real acerca do local onde de desenvolve a visualização.
The day-to-day life is affected by constant technological evolution. A technology that has gained prominence explores interactivity in real time, with the creation of systems that allow the replacement of most or even the whole user experience in physical space. This technology, named Virtual Reality (VR), gave origin to Augmented Reality (AR) that unlike the VR, doesn’t seek to replace the real world entirely but to supplement it, overlapping it with virtual objects. The motivation of this dissertation comes from the perception of the lack of a system interlinking AR, mobile devices and sensory data acquisitions systems, and since this is an area underexplored, is meant to be a work that might originate a system with great interest and utility to the user. This way, the objective of this work is the creation of a system that interconnects these three technologies: AR, mobile devices and sensory data acquisition systems. In this work was made the planning of a sensory data visualization system in AR applications to mobile devices, composed of three components: sensory contextualization, sensory data management and visualization of sensory virtual contextualized models. These components are responsible, respectively, for the acquisition of sensory data context, acquired data management and their visualization acquired in virtual models presented in the application running on the mobile device, influencing or conditioning the rendering these virtual models. After the planning of the system, was designed and developed a system with the characteristics mentioned above and it was tested in a case of use, through the implementation of a prototype of a room and the use of two sensory parameters: illumination intensity and temperature. However, the sensory contextualization component was simulated, having been created a web platform that simulates the acquisition of data via buttons instead of purchase in physical space. After its design, the desired results were obtained: influence or condition the visualization of virtual models based on the sensory context values used, being able to change the lighting of a lamp present in the virtual model based on the current value of simulated lighting and change of textures of this virtual model according to the current temperature, being used five temperature ranges: very cold, cold, normal and hot, which are associated with the colors dark blue, blue, green, orange and red, respectively. Therefore, after completing this case study, it was shown that it is possible to condition the viewing of a particular virtual model through the use of sensory input parameters relative to the real context about the location where is developed the visualization.
36
Fischer, Michael. "A Distributed Intelligent Lighting Solution and the Design and Implementation of a Sensor Middleware System". Thesis, 2015. http://hdl.handle.net/1828/6094.
Testo completoAbstract (sommario):
This thesis addresses a multi-phase research and development project that spanned nearly
four years, targeted at providing an ultra high-efficiency, user-friendly, and economic
intelligent lighting solution for commercial facility applications, initially targeting
underground parking specifically. The system would leverage the strengths of four key
technologies: high brightness white Light Emitting Diodes (LEDs), wireless sensor and
actuator networks, single board computers, and cloud computing. An introduction to
these technologies and an overview of how they were combined to build an intelligent
lighting solution is given, followed by an in-depth description of the design and
implementation of one of the main subsystems – the Sensor Middleware System –
residing on a single board computer.
Newly-available LED luminaires (a.k.a. light fixtures) bring the combination of high
efficiency, reliability, illumination quality, and long-lifetime to the lighting market.
Emerging low-power – and recently low-cost – 802.15.4 wireless networks offer high
controllability and responsiveness to deployed luminaires and sensors. The cost-
associativity, low maintenance, and easy build-up of Internet Data Center “cloud”
computing resources make data collection and remote management infrastructure for
Building Automation Systems accessible to even small companies. Additionally, these
resources can be much more appropriately sized and allocated, which reduces energy use.
These technologies are combined to form an Intelligent Lighting System (ILS). Fitting
well within the Internet of Things paradigm, this highly distributed messaging-based
“system of systems” was designed to be reliable through loose coupling – spanning
multiple network layers and messaging protocols. Its goal was to deliver significant
energy savings over incumbent technologies, configurable and responsive lighting service
behaviour, and improved experience for users within the facility (pedestrians and drivers)
and those interacting with its web-based tools (building managers and ILS
administrators). The ILS was partitioned into three main subsystems as follows. The
installed Wireless Field Network (WFN) of luminaires and sensors provided coordinated
scheduled and real-time output level adjustment (i.e. dimming), with the help of motion
sensor triggers. The Monitoring and Configuration System (MCS) in the cloud provided
remote data collection and a web-based monitoring and configuration Graphical User
Interface application. Network hardware and Message-Oriented Middleware (MOM)
were responsible for tying these subsystems together. The MOM layer that provided the
message brokering, translating, envelope wrapping, and guaranteed delivery services
between the WFN and MCS, as well as field supervisory and quality-of-service functions
for the WFN, was called the Sensor Middleware System (SMS). It was hosted on a
single board computer located at the facility.Graduate