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Chepetan, Adrian. "Microcontroller based Data Acquisition System." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ62200.pdf.
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Chen, Chun-Yu. "A knowledge-based microcontroller software development system." Thesis, Loughborough University, 2003. https://dspace.lboro.ac.uk/2134/34244.
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A large range of products are now designed based on the implementation of microcontrollers, as they lead to an overall system enhancement, such as a more compact system design and reduced costs. This can be credited to the peripheral functions embodied in the microcontroller and the flexibility offered by its software. Since the applications of microcontrollers are achieved through software, the implementation of the target controller is considered as an interdisciplinary process. Due to the capability of the current development tool, designers are required to input significant effort such that the development with the process is taking a long time to complete. The purpose of this research is aimed at improving the current microcontroller software development process.
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Bestepe, Firat. "Microcontroller-based Multiport Communication System For Digital Electricity Meters." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605765/index.pdf.
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This thesis explains the design of a microcontroller-based device, which provides an efficient and practical alternative for the remote reading of digital electricity meters over Public Switch Telephone Network (PSTN). As an alternative application, a system is constructed providing file transfer capability to the PC connected to the port of implemented device in addition to remote reading of digital electricity meters. This thesis also provides detailed explanations about
the basics of serial asynchronous communication over modem for PICs (peripheral interface controllers) together with description of each component included by the constructed system, which can be used in energy metering sector commonly.
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Balasubramanian, Radhika. "PIC Microcontroller Based Smart Inhaler System for Asthma Patients." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1342544475.
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Alexander, Joshua L. "A Microcontroller-based, Optically-centric Communication System for Underwater Applications." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504868704379707.
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Kotsbak, Marius Bjørnstad. "Microcontroller based fluid flow and image control system for biochemical analysis." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18325.
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Jarle Kotsbak started started the company Kotsbak Consulting to test an idea he had of a method of sequencing DNA material, that is reading the contents of the string of genes in a DNA. The method is supposed to be much faster and cheaper than the methods that exist today. For the analysis equipment there are a lot of parts that need to be developed, and the most important ones in the first phases of experimentation is given as problems for this thesis.The analysis is going to take place in a relatively small reaction chamber where chemicals need to be automatically added and heated to the correct temperature. Then a high resolution image is going to be captured using a small image chip similar to those found inside digital cameras. As these have varying real time requirements, it is not possible to control from a ordinary PC. A microcontroller is needed to do the low level controls. Control of the experiments should be possible to set up from a PC connected to the equipment using a USB (Universal Serial Port) 2.0 port, which is also going to transfer the images captured to the PC for image and data analysis.Atmel AVR32 microcontroller was suggested for use, and it was not found that any of the requirements was not in theory possible to solve using this microcontroller, so it was the one used in all parts. It was evaluated if it was best to program the microcontroller directly without an operating system, but it was found that using Linux, which the evaluation boards of the microcontroller was shipped with, had so many advantages over the small and uncertain advantages of programming the microcontroller directly. so Linux was used in all parts. As most of the needed drivers for Linux were new or unreleased, a lot of time was spent learning how to compile the Linux kernel with those patches and finding out how to use the undocumented parts of the drivers, as well as extending the drivers to support the hardware and specification needed.The heating controller worked quite well after getting the connection to the sensors working, including estimation of the temperature inside the reaction chamber, which is the temperature that is going to be controlled, but can not be measured directly. If needed it is possible to tune the controller better for stricter requirements or change to a model based controller if needed and the parameters in the model can be found, which turned out to be hard.A nice solution to the flow control was found using a stepping motor that is able to push the piston in a syringe containing one of the chemical mixes in exact amounts, controlled by an external stepping motor driver chip, which was easy to get working, connected using I2C. The solution was at least as good and much easier to implement than the one suggested in the assignment, using valves and pressure measurements to estimate the amount flowing.It was shown that image capture of the required resolution, i.e. 2048 x 1536 and possibility for much higher, was possible using Linux and the hardware support for transferring images from image chips in the AVR32 microcontroller using kernel modules. The problem is that it was only working sometimes, so a little more debugging of the possible hardware/ software reason for this to be resolved, but it seems like it is only a small problem and not caused by any limitation in software or hardware.It was attempted to get the USB part working without running an O/S on the microcontroller, but it did not succeed, partly because of incomplete documentation of the USB hardware module in the AVR32. Then the available driver systems for USB slave equipment under Linux was studied and it was found that gadgetfs seemed most promising to use. The driver did though first not load, just giving a stacktrace. In a newer version of the Linux version for the development board, it did though load and it seemed like it was working. Further development of this part was not done because of much delay in the other parts, and the fact that choosing Linux as platform, as well as the image being buffered in RAM, allows to use ethernet to transport the images during testing until later product development stages.Overall most of the parts have been accomplished according to the specifications, although there was not too detailed practical testing of each part because of much time spent on solving problems, and the fact that many complex parts were outlined to be solved during the project. Solving the small problems left as described at the corresponding discussion chapters should, with small modifications/customization, make the practical solutions found usable for future prototypes of the product or for more experiments.
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Li, Zhenfeng 1968 Oct 9. "Design of a microcontroller-based, power control system for microwave drying." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82278.
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Microwave drying is an energy-efficient drying method. The output power of most commercial microwave ovens is controlled in an intermittent fashion, where the amount of microwave energy is determined by the ratio of "ON cycles" to "OFF cycles." To provide a more efficient and continuous power control for the magnetron, a microcontroller-based, feedback power control system was developed. The system was based on a phase-control principle to achieve smooth power variations depending on a feedback temperature signal of processed products. Two temperature sensors, a thermocouple and an infrared sensor, were used to measure the temperature. A fiber-optic thermometer was used for calibration and evaluation of the system performance during microwave drying. With the IR sensor, the mean standard deviation and maximum error in temperature measurement of controlled water samples were +/-0.34ºC and +/-1.5ºC, respectively. This result demonstrated the accuracy of the IR sensor in the system control. Under the IR sensor-controlled system, carrot cubes (Daucus carota L.) lost 85.37% of their water content and resulted in better color quality than the conventional microwave-hot air convective drying without a temperature feedback control.
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Fulbright, Jr Thomas. "DESIGN IMPLEMENTATION OF A MICROCONTROLLER BASED EXTERNAL FACILITY ACCESS CONTROL SYSTEM." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2830.
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In order to solve the College of Engineering and Computer Science facility access problem, an automated system that provides exterior doors with a time schedule and allows authorized users to gain access to the facility after hours was developed. A microcontroller based system has been designed to interface with a personal computer. The system designed within this thesis can be used as a starting point for multiple facility access control systems. This thesis will describe the design, integration, test, and final delivery of a facility access system that incorporates the Texas Instruments MSP430 microcontroller, a magnetic card swipe reader, and software developed in Microsoft Visual Basic .Net to provide a reliable and robust system for the College of Engineering and Computers Sciences needs.M.S.Cp.E.
Department of Electrical and Computer Engineering
Engineering and Computer Science
Computer Engineering
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Alyami, Mohammad Manea. "Microcontroller-based transient signal analysis and distributed system for intelligent process monitoring." Thesis, Cardiff University, 2008. http://orca.cf.ac.uk/54783/.
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The research presented in this thesis considers the feasibility of utilising dsPICs (digital signal controllers) in the development of effective monitoring systems which have the capability to adapt to changes in operating conditions and can be quickly calibrated to suit a range of applications, thus helping to reduce the development time constraint. The capability of these monitoring solutions to detect and isolate faults occurring in pneumatic processes is investigated and their effectiveness verified. Three applications are considered gas pipe leakage, linear actuator operations and gripper action. In each case, solutions are developed based upon the dsPIC. The solutions utilise the analysis of pressure transients to overcome the limitation in the dsPIC memory. The deployment of minimal sensors and electronics was essential to optimise the cost of the system. Leak detection techniques are developed with application to gas fitting pipes. The speed at which correct decisions are determined was the essence of this work. The solutions are tested, compared and their capability validated using pipes which had been rejected according to industrial standards. In this application a dsPIC digital signal controller and a pressure sensor were deployed, thus ensuring a low cost monitoring solution. Linear actuator "end of stroke" monitoring has, previously, largely been possible using limit switches. A more challenging method based upon the deployment of a pressure sensor is outlined. Monitoring model surfaces were obtained and their capability to determine the health of the process was proved, at various supply pressures. With regard to the gripper monitoring, a performance surface by which the gripper action can be monitored is generated and embedded within the dsPIC. Various faults are simulated and their effect on the gripper performance investigated. Leakage and blockage are also investigated at various places in the pneumatic circuit to allow for an algorithm to be devised. Faults may be detected and isolated, and their locations identified to allow for timely recovery treatment, thus supporting an enhanced process monitoring strategy.
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Ambekar, Dhanashree. "Development of a microcontroller-based head impact detection system for contact sports." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1377870605.
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Sunwoo, John Stroud Charles E. "Built-In Self-Test of programmable resources in microcontroller based System-on-Chips." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Thesis/SUNWOO_JOHN_31.pdf.
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Hickle, Mark, Alexander Wilson, Joshua Kientzy, and Matthew Myers. "Design of a Semi-Autonomous Quadrotor Aircraft." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581745.
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ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, CaliforniaThis paper describes the design and construction of a semi-autonomous quadrotor aircraft approximately 1 meter in diameter. Because of the mechanical simplicity of the aircraft, the design challenges primarily centered on the electrical and computer engineering (ECE) tasks, and was used as a capstone design experience in an undergraduate ECE program. An onboard microcontroller based system uses a network of digital sensors and differential thrust for autonomous attitude control. A wireless telemetry and command link allows a user to monitor the vehicle, control its direction of flight, and for flight safety control.
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Chen, Di. "Design and implementation of microcontroller-based direct methanol fuel cell/lithium polymer battery hybrid energy management system." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/12579.
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The Direct Methanol Fuel Cell (DMFC) has been considered as one of the competitive alternatives for battery technology as it has much higher energy density, faster recharging and does not require complicated control systems like a fuel reformer or compressed gas tank as needed by a hydrogen fuel cell. However, current DMFC technology suffers from the low power density caused by low reaction rate and undesired “methanol crossover” issues, which brings a big challenge for its application in practical systems.
This thesis presents a practical design and prototype development of a DMFC/battery hybrid energy management system, which can be provided as one possible solution for the low power and cold start issues. First of all the existing fuel cell hybrid system schemes and design of the auxiliary units (BOP) are surveyed and compared. Based on the analysis above a microcontroller-based DMFC and Lithium Polymer Battery hybrid system is proposed.
After that a novel “Battery-Current-Based Hybrid Control (BCBHC)” is proposed to provide active load sharing and proper battery charging and protection. The DMFC will follow the average battery current by neglecting the battery current transients and charge the battery by following the Constant-Current and Constant Voltage charging scheme when possible. A variety of battery protections, such as overcharging, overcurrent and charging current limitation, are implemented by the BCBHC and protection circuit.
A detailed system design and modeling are then presented. The models are developed and simulated in PSIM. The simulation results are analyzed and showed the validity of proposed hybrid control.
At the end a prototype hybrid EMS controller board has been implemented to further validate the hybrid system design. The dynamic behavior of DMFC/Battery hybrid system is examined and tested under a series of load experiments. The measured results have proved the feasibility and stability of the designed hybrid control.
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McCormack, Matthew Michael. "Trade study and application of symbiotic software and hardware fault-tolerance on a microcontroller-based avionics system." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/67194.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 195-201).
Spacecraft avionics initially commanded the development of the microprocessor industry, enabling microprocessors to be designed specifically for the reliability demands posed by the radiation environment of space. However, microprocessor have shifted their focus from ensuring reliable operations to maximizing performance, forcing the price of spacecraft avionics to balloon. Costing over three orders of magnitude more than current state of the art general purpose processors, while performing operations an order of magnitude slower. These differences stem from the reliability requirements of operating in space, typically achieved through hardware-based modifications. While these solutions generate the necessary reliability, they limit the engineering options for the system and force the use of outdated technology. A solution researched but never widely implemented, is the use of error detection and correction software algorithms. An ideal design lies in the combination of hardware and software methods for providing reliability. A new avionics architecture was designed to implement a system using hardware and software to achieve reliability with COTS products. The architecture was applied to the CASTOR satellite as its primary avionics system, for verification testing of the architecture's functionality. This architecture further aims to expand spacecraft usage of microcontrollers as the primary spacecraft avionics computers.
by Matthew Michael McCormack.
S.M.
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Ernst, Daniel. "Development of Research Platform for Unmanned Vehicle Controller Design, Evaluation, and Implementation System: From MATLAB to Hardware Based Embedded System." [Tampa, Fla.] : University of South Florida, 2007. http://purl.fcla.edu/usf/dc/et/SFE0002088.
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Grott, Steven, David Lecko, Ryan Parker, and Nathan Price. "Telemetry System for Remote Monitoring of Utility Usage in Commercial and Residential Structures." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581677.
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ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, CaliforniaThe system described in this paper can monitor utility usage in commercial and residential structures, and send an alert message over conventional cell phone networks when it detects an anomalous condition. Such a condition could indicate a utility outage, structure failure, HVAC system failure, water leak, etc. The microcontroller-based system can measure electrical current, carbon monoxide, methane, liquid propane, temperature, barometric pressure, and altitude using a wired and wireless sensor network. The microcontroller displays the measurements on local and external graphical user interface, and sends SMS alert messages when necessary. The system may be retrofitted into existing structures.
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Araujo, Cespedes Fabiola. "Respiratory Monitoring System Based on the Thoracic Expansion Measurement." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/3953.
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The purpose of this reasearch was to develop a respiratory monitoring system using a reflective object sensor based belt to measure the thoracic expansion of a neonatal for future application at the medical center of the Universidad Evangelica Boliviana (UEB). This medical center, being founded by the UEB University, is dedicated to help and serve the poor and currently has no respiratory monitoring system.
The methodology used was first to build and test the respiratory sensor belt and test the relationship between the blet expansion and the voltage generated. The, to incorporate the respiratory sensor belt in a system that would allow individual testing as well as group testing in a wireless network. The system was simulated using an expandable plastic container that was expanded and extracted periodically, registering the results in a MATLAB software.
The system gave successful results and generated the frequency results of each cycle, average frequency and deviation frequency. The system demonstrated to be reliable and to have repeatable results.
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Horyachyy, Oleh. "Comparison of Wireless Communication Technologies used in a Smart Home : Analysis of wireless sensor node based on Arduino in home automation scenario." Thesis, Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-14845.
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Context. Internet of Things (IoT) is an extension of the Internet, which now includes physical objects of the real world. The main purpose of Internet of Things is to increase a quality of people’s daily life. A smart home is one of the promising areas in the Internet of Things which increases rapidly. It allows users to control their home devices anytime from any location in the world using Internet connectivity and automate their work based on the physical environment conditions and user preferences. The main issues in deploying the architecture of IoT are the security of the communication between constrained low-power devices in the home network and device performance. Battery lifetime is a key QoS parameter of a battery-powered IoT device which limits the level of security and affects the performance of the communication. These issues have been deepened with the spread of cheap and easy to use microcontrollers which are used by electronic enthusiasts to build their own home automation projects. Objectives. In this study, we investigated wireless communication technologies used in low-power and low-bandwidth home area networks to determine which of them are most suitable for smart home applications. We also investigated the correlation between security, power consumption of constrained IoT device, and performance of wireless communication based on a model of a home automation system with a sensor node. Sensor node was implemented using Arduino Nano microcontroller and RF 433 MHz wireless communication module. Methods. To achieve the stated objectives of this research following methods were chosen: literature review to define common applications and communication technologies used in a smart home scenario and their requirements, comparison of wireless communication technologies in smart home, study of Arduino microcontroller technology, design and simulation of a part of home automation project based on Arduino, experimental measurements of execution time and power consumption of Arduino microcontroller with RF 433 MHz wireless module when transmitting data with different levels of security, and analysis of experimental results. Results. In this research, we presented a detailed comparison of ZigBee, WiFi, Bluetooth, Z-Wave, and ANT communication technologies used in a smart home in terms of the main characteristics. Furthermore, we considered performance, power consumption, and security. A model of a home automation system with a sensor node based on Arduino Nano was described with sleep management and performance evaluation. The results show that the battery lifetime of Arduino in a battery-powered sensor node scenario is determined by the communication speed, sleep management, and affected by encryption. Conclusions. The advanced communication strategy can be used to minimize the power consumption of the device and increase the efficiency of the communication. In that case, our security measures will reduce the productivity and lifetime of the sensor node not significantly. It’s also possible to use symmetric encryption with smaller block size.
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Almosawi, Talib, and George Karanta. "ZigBee-based climate measurement system for thermal comfort in traffic busses." Thesis, KTH, Hälsoinformatik och logistik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-296494.
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This thesis describes the work process two (WP2) of a project led by the traffic administration in Stockholm to achieve the passengers' thermal comfort in traffic buses. The purpose of this thesis is to design and implement a measurement system comprised in eight measurement position in a bus. Each position is able to transmit data using a wireless communication protocol, with a central unit collecting all the transmitted data taking into consideration the accuracy of the measurements and filtering out the incorrect data. In order to accomplish this, a literature study is conducted investigating different measurement methods for different parameters, different communication protocols were analysed as well to determine an appropriate communication protocol suitable for climate measurement in a bus environment with passengers present on board. The output of the HVAC system is also required to help the traffic administration demonstrate the results of adjusting the temperature in the bus to reach the thermal comfort and how it led to saving energy. The system incorporates ZigBee , ESP32 microcontroller in the sender positions and a Raspberry pi operating as a central unit to collect data and store it in a file system providing an accurate data that will help the traffic administration achieve their goals. Unfortunately, there were some diffculties accessing CAN system data to provide the output of the HVAC system.Detta examensarbete beskriver arbetsprocess två i ett projekt som leds av trafikförvaltningen i Stockholm för att uppnå termiska komfort för passagerare i busstrafik. Syftet med detta examensarbete är att utforma och implementera ett mätsystem bestående av åtta positioner i en buss. Varje position kan överföra data med hjälp av ett trådlöst kommunikationsprotokoll, en central enhet samlar in all data med hänsyn till mätningens noggrannhet och filtrering av felaktig data. För att uppnå detta utfördes en litteraturstudie för att undersöka mätningsmetoder för de olika parametrar. Olika kommunikationsprotokoll undersöktes för att bestämma en lämplig kommunikationsprotkoll för ett mätsystem som mäter klimat i bussar med passagerare ombord. Uteffekten av HVAC-systemet krävs också för att hjälpa trafikförvaltningen att bestämma fördelarna med att justera temperaturen i bussen för att nå den termiska komforten och hur den ledde till att spara energi. Systemet inkorporerar kommunikaitonsprotokollet ZigBee, ESP32-mikrokontroller i avsändarpositionerna och en Raspberry pi som fungerade som en central enhet för att samla in data och lagra det i ett filsystem med korrekta data som hjälper trafikförvaltningen att uppnå sina mål. Svårigheter uppstod med att få tillgång till CAN-system data för uteffekten av HVAC-systemet.
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Grzybowská, Martina. "Human Mo-cap System Based on Inertial Measurement Units." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445474.
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Cieľom tejto práce je navrhnúť, zhotoviť a implementovať vlastný systém pre zachytávanie pohybu založený na inerciálnych meracích jednotkách. V rámci budovania teoretického základu bolo preskúmaných viacero metód, avšak primárne bola pozornosť venovaná samotnému inerciálnemu snímanu - jeho kladom a nedostatkom, kľúčovým vlastnostiam a jednotlivým komponentom potrebným pre zostrojenie systému na jeho báze. Tento úvodný zber informácií je nasledovaný fázami návrhu, zhotovenia a zhodnotenia, ktoré sa zaoberajú procesom vývoja a testovania daného riešenia. Hlavným prínosom realizácie systému je zostrojenie zariadení pre snímanie pohybu - jedná sa o malé, ľahké, batériovo napájané zariadenia, ktoré sú kompletne bezdrôtové, či už z hľadiska komunikácie s okolitým svetom, alebo vďaka napájaniu kompatibilnému so štandardom Qi.
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Galvão, Fernando. "Proposta de instrumento para testes necessários à certificação das instalações elétricas de baixa tensão." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2006. http://hdl.handle.net/10183/16085.
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Este trabalho apresenta a proposta de um instrumento para utilização nos ensaios previstos nas Normas Brasileiras para certificação das instalações elétricas de baixa tensão. Descreve-se o projeto e a implementação do instrumento desenvolvido, bem como a metodologia para a execução dos testes de conformidade, de acordo com as Normas Brasileiras aplicáveis, utilizando os recursos disponíveis na instrumentação proposta. Um conjunto de testes para exemplificação de uso e validação dos testes é também apresentado.This work presents an instrumentation system to perform tests and certification of low voltage electrical networks on residential and industrial buildings in accordance to Brazilian Norms. It intends to propose a methodology for tests executions using available resources on the developed instrumentation system. To show how the proposed system works several tests were done regarding to attend Brazilian technical standards.
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Zengin, Salih. "Systemc Implementation Of A Risc-based Microcontroller Architecture." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12608083/index.pdf.
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Increasing the complexity of modern electronic systems leads to Electronic System Level (ESL) modeling concept, which supports hardware and software co-design and co-verification environment in a single framework. SystemC language, which is an IEEE approved electronic design standard for system design and verification processes, provides such an environment by supporting a wide range of abstraction levels from system-level to register-transfer level (RTL). In this thesis, two different models of a processor core, whose instruction set architecture (ISA) is compatible with 16-bit TI MSP430 microcontroller, are designed by employing the classical hardware modeling capability of the SystemC language. With its well-designed orthogonal instruction set, elegant addressing modes, useful constant generators and flexible von-Neumann architecture, 16-bit RISC-like processor of the MSP430 microcontroller is an ideal selection for the system-on-a-chip (SoC) designs. Instruction set and addressing modes of the designed processors are simulated thoroughly. In addition, original 16-bit and 32-bit cyclic redundancy code (CRC) programs are used in order to verify the processor cores. In this study, SystemC to hardware flow is also illustrated by synthesizing the Arithmetic and Logic Unit (ALU) part of the processor into a Xilinx-based hardware.
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Elgendy, Mohammed Ali Mohammed. "Photovoltaic pumping systems with microcontroller-based MPPT control." Thesis, University of Newcastle Upon Tyne, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610979.
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Photovoltaic pumping systems have become a favourable solution for water supply particularly for sunny regions that have no access to an electric grid. The maximization of energy utilization of these systems via maximum power point tracking (MPPT) has not been sufficiently exploited in the literature. As a result, most commercial photovoltaic pumping systems either utilize inefficient MPPT control or do not utilize MPPT control at all thus wasting up to 50% of the available solar power depending on component matching and weather conditions. It is therefore important that the operating behaviour of these systems under MPPT control must be better understood and their reliability proven under practical operating conditions. This thesis details an investigation of the performance characteristics of directly connected photovoltaic pumping systems, systems operated at a constant array voltage, and those utilizing MPPT control. Two hill-climbing MPPT algorithms namely perturb and observe algorithm and incremental conductance algorithm were chosen because of their simplicity and ease of implementation with a low cost microcontroller/DSP. Particular focus is given to the evaluation of the practical implementation of these two MPPT algorithms and the choice of their parameters. A simple and accurate empirical model is derived for each individual component of the system and the system is simulated numerically using the MATLAB/Simulink environment. A comprehensive analysis of the stability and the performance characteristics of the system in different operation modes is presented. The various advantages and drawbacks of each MPPT control technique are identified and energy utilization efficiency is calculated for different weather conditions. Experimental operation of the system was tested using a 1080Wp photovoltaic array connected to a lkW permanent magnet de motor-centrifugal pump set. A power converter was constructed and used as a pump controller to match the motor-pump set with the PV array. A Texas Instruments TMS320F2812 DSP based eZdsp kit was used for real-time control and data acquisition. Data acquisition is accomplished utilizing the real-time data exchange feature of the DSP kit. Practical results show very good agreement with the numerical simulation of the systems.
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Bhatnagar, Purva. "A microcontroller-based Electrochemical Impedance Spectroscopy Platform for Health Monitoring Systems." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439307617.
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Johansson, Oscar, and Gustav Andersson. "Smart Greenhouse : A microcontroller based architecture for autonomous and remote control." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42284.
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Expensive and complex automated systems for greenhouses are frequently utilized in the horticulture industry. In parallel, smart systems for home automation has recently seen a rapid increase in popularity. This project aims to combine the climate optimization capabilities of industrial systems with the convenience of home automation systems. More specifically, this project is focused on the design and implementation of electrical and mechanical requirements of a smart greenhouse system. This involved the selection of hardware components, such as sensors, actuators and controllers. It also involved the interconnection between these components and the development of measurement and control systems to autonomously manage the greenhouse. The system is based on a WiFi-connected microcontroller. Parameters monitored include; temperature, humidity and wind-speed. Irrigation is controlled by a solenoid valve and can be scheduled to desired intervals. Ventilation and temperature optimization is done by controlling the roof-hatch with a linear actuator and control of a heater. The results demonstrate a accurate and reliable system with low power consumption. The resulting prototype can be installed in new and existing greenhouses. Functionalities can be remotely controlled and monitored by the convenience of an android application. The total cost of the components used was around 4 500 SEK. Further development could be done to enable seamless scalability with additional components and functionalities. Climate optimization by incorporation of weather forecast as a parameter could be implemented to further reduce energy consumption.Dyra och komplexa automatiserade växthussystem är vanligt förekommande inom industrin för hortikultur. Parallellt har populariteten för "Smart Home" system för hemautomatisering radikalt ökat. Målet med detta projekt är att kombinera klimatoptimiseringsmöjligheterna hos industriella system med lättanvändligheten hos system för hemautomatisering. Detta projekt fokuserar specifikt på designen och implementationen av de elektriska och mekaniska krav som ställs på ett "smart greenhouse system". Detta innefattar; val av komponenter såsom sensorer, aktuatorer samt styrenhet men även sammankopplingen mellan dessa komponenter och utvecklingen av mjukvara till reglersystemet, som i sin tur syftar till automatiseringen i växthuset. Systemet är baserat på en WiFi-uppkopplad mikrokontroller. Parametrar som monitoreras är; temperatur, luftfuktighet och vindhastighet. Bevattning kontrolleras av en magnetventil och kan schemaläggas för bevattning i önskade intervall. Ventilering och temperaturoptimisering sker genom kontroll av taklucka med hjälp av ett linjärt ställdon samt kontroll av ett värmeelement. Resultatet demonstrerar ett pålitligt och punktligt system med låg energiförbrukning. Prototypen som utvecklats kan installeras i både nya och befintliga växthus. Funktionaliteterna kan smidigt fjärrkontrolleras och monitoreras från en android applikation. Den totala kostnaden för de komponenter som använts var runt 4500 kr. Vidareutveckling vad gäller skalbarhet för att sömlöst lägga till komponenter och funktionaliteter bör övervägas. För ytterligare minskad energiförbrukning med hjälp av klimatoptimering kan väderprognos adderas som en parameter.
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Ross, Mark. "An embedded control and display system for a laser-based mid-infrared hyperspectral imager /." St Andrews, 2008. http://hdl.handle.net/10023/731.
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Darr, Matthew John. "DEVELOPMENT AND EVALUATION OF A CONTROLLER AREA NETWORK BASED AUTONOMOUS VEHICLE." UKnowledge, 2004. http://uknowledge.uky.edu/gradschool_theses/192.
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Through the work of researchers and the development of commercially availableproducts, automated guidance has become a viable option for agricultural producers.Some of the limitations of commercially available technologies are that they onlyautomate one function of the agricultural vehicle and that the systems are proprietary toa single machine model.The objective of this project was to evaluate a controller area network (CAN bus)as the basis of an automated guidance system. The prototype system utilized severalmicrocontroller-driven nodes to act as control points along a system wide CAN bus.Messages were transferred to the steering, transmission, and hitch control nodes from atask computer. The task computer utilized global positioning system data to determinethe appropriate control commands.Infield testing demonstrated that each of the control nodes could be controlledsimultaneously over the CAN bus. Results showed that the task computer adequatelyapplied a feedback control model to the system and achieved guidance accuracy levelswell within the range sought. Testing also demonstrated the system's ability tocomplete normal field operations such as headland turning and implement control.
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Diop, Mody. "Système d'acquisition de données microclimatiques à vocation agronomique." Rouen, 1993. http://www.theses.fr/1993ROUES024.
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Le but poursuivi dans ce travail concerne l'élaboration d'une microstation d'acquisition de données climatologiques à vocation strictement agronomique destinée à être intégrée dans un réseau spécialisé. Après une présentation de l'intérêt d'un tel système dans la gestion optimale de l'agriculture, le premier chapitre expose les contraintes du cahier des charges. L'ensemble des capteurs utilisés ainsi que l'électronique de gestion associée sont présentés au second chapitre. Le chapitre suivant présente l'organisation logicielle du système en insistant sur les techniques propres à économiser l'énergie. Enfin l'avant-dernier chapitre précise les résultats et procédures d'étalonnage et l'ouvrage se termine par une présentation d'un ensemble typique de résultats d'exploitation
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Jovan, Ivković. "Metode i postupci ubrzavanja operacija i upita u velikim sistemima baza i skladišta podataka (Big Data sistemi)." Phd thesis, Univerzitet u Novom Sadu, Tehnički fakultet Mihajlo Pupin u Zrenjaninu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=101176&source=NDLTD&language=en.
Full textAbstract:
Predmet istraživanja ove doktorske disertacije je mogućnost uspostavljanja modela Big Data sistema sa pripadajućom softversko – hardverskom arhitekturom za podršku senzorskim mrežama i IoT uređajima. Razvijeni model počiva na energetsko efikasnim, heterogenim, masovno paralelizovaim SoC hardverskim platformama, uz podršku softverske aplikativne arhitekture (poput OpenCL) za unifikovan rad.Pored aktuelnih hardverskih, softverskih i mrežnih računarskih tehnologija i arhitektura namenjenih za rad podkomponenata modelovanog sistema u radu je predstavljen istorijski osvrt na njihov razvoj. Time je naglašena tendencija cikličnog kretanja koncepcijskih paradigmi računarstva, kroz svojevrstne ere centralizacije – decentralizacije computinga. U radu su predstavljene tehnologije i metode za ubrzavanje operacija u bazama i skladištima podataka. Istražene su mogućnosti za bolju pripremu Big Data informacionih sistema koji treba da zadovolje potrebe novo najavljene informatičke revolucije opšte primene računarstva tzv. Ubiquitous computing-a i Interneta stvari (IoT).The research topic of this doctoral thesis is the possibility of establishing a model for Big Data System with corresponding software-hardware architecture to support sensor networks and IoT devices. The developed model is based on energy efficient, heterogeneous, massively parallelized SoC hardware platforms, with the support of software application architecture. (Such as an open CL) for unified operation. In addition to current hardware, software and network computing technologies, and architecture intended to operate subcomponents of the system modeled in this paper is presented as an historical overview of their development. Which emphasizes the tendency of the cyclic movement of the conceptual paradigm of computing, through the unique era of centralization/decentralization of computing. The thesis presents the technology and methods to accelerate operations in databases and data warehouses. We also investigate the possibilities for a better preparation of Big Data information systems to meet the needs of the newly announced IT revolution in the announced general application of computing called Ubiquitous computing and the Internet of Things (IoT).
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Huang, Ming-Fong, and 黃鳴鋒. "Microcontroller-based high-accuracy impedance measurement system." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/45948731508452167458.
Full textAbstract:
碩士國立臺灣大學
醫學工程學研究所
100
Bioelectrical impedance analysis is based on that the different tissues have different characteristics to obtain the relevant biological information. It has been wildly used to detect much biological information for decades. No matter what kind of application, their measurement hardware and algorithm are very important. Traditional LCR meters are certainly accurate, however its size, and power consumption will make it difficult for portable applications. Furthermore, previous impedance measurement can not distinguish a very small amount of the phase change, leading to considerable deviation from the actual value. This study develop a low-frequency, high-accuracy impedance measurement platform. The system utilized a microcontroller, MSP430, as the core unit. It was compared with a LCR Meter to determine the accuracy and reliability. The resulting system is a portable, low-cost, automatic and real-time display device for the convenience of the impedance measurement.
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Peng, Li-Fan, and 彭立帆. "Microcontroller-based Real-time Heart Rate Monitoring System." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/10658763911214139360.
Full textAbstract:
碩士國立陽明大學
醫學工程研究所
94
The needs of home health care systems are getting stronger day by day in the aging population. This research used a device called ‘Vital-Belt’ designed by Dr. Chih-Cheng Lu, NHRI. The device acquires two bio-signals in real-time: ECG and signals from 3-axis accelerometer for detecting falling. We added a very low power microcontroller MSP430 into this device to process these bio-signals. Motion artifact is the most critical problem in the ambulatory ECG. In this research, we emphasized the processing of the ECG disturbed by motion artifact. A dynamic threshold was determined by calculating the activity levels from accelerometer. We used this method to detect heart rate and abnormal beats in real-time and transmitted abnormal ECG to a computer or PDA via Bluetooth. From five healthy persons, the averaged accuracy of R-peak detection was 99.85%, 99.26% and 99.16% in standing, walking (4 miles/hr) and slow running (6 miles/hr) situations, respectively. The averaged detection error rate was 1.45%, 1.84% and 1.89%, respectively. The experiments were performed in a treadmill. For atrial premature contraction (APC) and ventricular premature contraction (VPC) detection, test four MIT/BIH data sets (105, 116, 118, and 119) were used. The averaged accuracy of R-peak detection was 99.89%. The averaged accuracy of APC and VPC detection was 93.81%.
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Lin, Wen-Zheng, and 林汶正. "Bio-medical monitoring system based onProgrammable SoC Microcontroller." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/6m84me.
Full textAbstract:
碩士中原大學
電機工程研究所
91
The objective of this dissertation is to carry out a bio-medical monitoring system based on the embedded System-on-a-Chip(SoC) tech. We design two systems, which are the simple ECG signal record system and complex pulse signal measurement system. Both systems are developed by Programmable SoC Microcontraller(PSoC),and discuss the advantages and faults between them. In this study, they can provide a standard industrial interface RS232 to real-time measure bio-signal and display in PC . In order to identity the performance of both systems, We test and verify separately for each function of the model for PSoC. The results showed that it meets our specification of systems. It is proved by the embedded SoC tech, the occupied area can be minimized, and the expense of the system can be reduced. Therefore, this way is convenient to use.
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Liou, Jhong-Ci, and 劉忠棋. "Design of IoT Gateway Based on Multi-Microcontroller System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/297vgn.
Full textAbstract:
碩士國立中央大學
資訊工程學系
104
The Internet of Things (IoT) gateway serves as a key intermediary between a considerable amount of smart things and their corresponding cloud networking servers. Academics and industry members have invested substantial research and development resources into developing IoT gateway-related technology and products. In small and low-power IoT applications, conventional gateway systems mainly use microcontrollers to perform lower-layer device network management, upper-level cloud server functions, and remote mobile computation services. However, regarding system scalability and computation and communication efficiency, solutions that use a single microcontroller cannot cater to the demands of IoT regarding large data collection, management, communication networks, and various other services. Therefore, this study proposed an innovative multimicrocontroller system framework, combining a field-programmable gate array-based hardware bridge and scalable multiple microcontrollers to construct a master–slave architecture of a high-performance multimicrocontroller IoT gateway. The proposed system features distributed processing, high-speed communication among microcontrollers, and compatibility with a wide variety of peripheral devices. In the end of this study, we implement an IoT application system case to verify our multimicrocontroller IoT gateway which has obviously more performance advantages than before.
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Zhou, Bing-Yi, and 周秉毅. "Bearing Vibration Detection Based On a Wireless Transmission Microcontroller System." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/tc66k4.
Full textAbstract:
碩士國立彰化師範大學
電機工程學系
105
This research proposes the bearing vibration detection based on a wireless transmission microcontroller system. The bearing vibration signal is captured during motor rotation and through signal processing and analysis. The analyzed data is transmitted to the server by wireless transmission and users can execute real-time monitoring remotely. This research therefore implements a system based on envelop method in order to characteristic frequency. The data will be transferred to the website server though WiFi communication. The user can detect bearing damage and maintain the machine in real-time. The machine will not be malfunctioned and loss can be prevented.
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Huang, Hong-Jie, and 黃泓傑. "Formation Flight Information Sharing via Onboard Multi-Microcontroller based System." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/sp92h7.
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碩士淡江大學
航空太空工程學系碩士班
106
This research investigates the improvement on hardware and communication for traditional UAV formation flight. The major tasks include the redesign of a multi-microcontroller system and a Sequential Cyclic Broadcast Communication (SCBC) mechanism. The multi-microcontroller system allows the implementation of a distributed computation architecture for improving the computational capability and flexibility for varies applications. Based on the SCBC structure, an identification algorithm using prime factorization techniques is developed to ensure the transmission security of the transmitted flight information. The proposed algorithm is successfully verified using a random numerical simulation.
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Sidlovska, Oleksandra. "Development of a Microcontroller Based System for Measuring Environmental Conditions." Dissertação, 2002. https://repositorio-aberto.up.pt/handle/10216/113512.
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CHEN, JIAN-CIN, and 陳建秦. "DSP Microcontroller Based Control of Brushless DC Motor Drive System." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/s4x76g.
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碩士大葉大學
機械與自動化工程學系
105
This thesis developed the drive system of BLDC motor based on PICDEM MC LV development board with Microchip dsPIC30F3010 microprocessor. The embedded microprocessor has many built-in functional modules, including PWM, compare, timer, etc. The 3-phase MOSFET bridge was used as the motor drive circuit and 3-phase hall sensing circuit was used to detect the electrical angle of motor shaft. The PWM signal was used to control motor speed to achieve the DC brushless motor drive system. The PI control combined with the feedforward control was applied to the motor closed loop speed control. The UART communication module was used to transmit the actual speed of the motor to PC. The command waveform and the actual speed waveform of the motor were drawn with MATLAB. The hardware and software constructed in this thesis were applied to the speed control of DC brushless motor, and the feasibility of the proposed method was verified by simulation and experiment of various speed control.
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Sidlovska, Oleksandra. "Development of a Microcontroller Based System for Measuring Environmental Conditions." Dissertação, 2018. https://hdl.handle.net/10216/113512.
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WU, WEI-CHENG, and 吳偉誠. "A RFID-aided Positioning Microcontroller-based Auto Guided Vehicle System." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/npmbh4.
Full textAbstract:
碩士國立勤益科技大學
機械工程系
107
In this research, the RFID Auto Guided Vehicle System based on Arduino microcontroller is designed. Using RFID module to control the route of the AGV and monitor the action of the system, by integrating the AGV and the automatic conveyor module, the overall system is completed. The program of the control system is coded by Arduino IDE software. Technology of optical guidance is applied to the AGV guiding by using TCRT 5000 guiding sensor. About the RFID-aided positioning, the RFID Reader is installed under the AGV chassis, and tags were placed on the route of the AGV. When the AGV is driving, the RFID Reader can read signal of the tag and know the current location information of the AGV immediately. The wireless communication was implemented by the Bluetooth module, then sending correct location information to the monitoring module. The automatic conveyor module is responsible for controlling material, working with the AGV to transport material to the staging area.
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Shih, Li-wei, and 石力維. "A Microcontroller-Based Li-ion Battery Real Time Diagnostic System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/18235648144534210525.
Full textAbstract:
碩士大同大學
電機工程學系(所)
104
In this thesis, a microcontroller-based battery real time diagnosis system for power battery is realized. The system is composed by a microcontroller, a sampling circuit, a human interface and load. We used electronic load and resonance load to verify the feasibility of battery real time diagnosis system. The resonance load have a wide range of slew rate and continuous load, in addition it can recover energy when system diagnose battery. Furthermore, the system can set battery parameter and loading current according to battery specifications by human interface. The propose system have low cost and portability feature. Finally, this thesis provides a complete model analysis, simulation, design considerations and test results, to verify the theoretical feasibility.
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Sidlovska, Oleksandra. "Development of a Microcontroller Based System for Measuring Environmental Conditions." Master's thesis, 2018. https://hdl.handle.net/10216/113512.
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Huang, Po-shen, and 黃柏昇. "Remote Monitoring/Control System and Firmware Updating Based on Ethernet Microcontroller." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/15066488219232458628.
Full textAbstract:
碩士國立彰化師範大學
機電工程學系
96
The purpose of this study is to construct an ethernet microcontroller based remote monitoring/control system with microcontroller firmware updating service. The ethernet microcontroller connects to the internet and also to the main controller node of CAN monitoring/control system through RS-232 interface. CAN monitoring/control system has a number of sensor nodes which sense the environment physical states. The main controller node of CAN monitoring/control system judges the physical states from sensing information sent by the sensor nodes, and sends the physical states and information to the ethernet microcontroller. The remote users can use any mean to connect to the ethernet microcontroller to perform the monitoring/control functions. After establishing connection with ethernet microcontroller, remote users can monitor and control the sensor nodes of CAN monitoring/control system through dynamic web pages. In addition, remote users can also update the firmware of the main controller of CAN monitoring/control system through internet.
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CAI, MING-DA, and 蔡明達. "A new single-chip-microcontroller-based detection system of hazardous gas." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/80156097030324453053.
Full textAbstract:
碩士聖約翰科技大學
電機工程系碩士在職專班
100
In this paper, authors employ the corresponding techniques of micro-chip to propose a noble hazardous gas detection system. The proposed device with some special feathers stated in the following: (1) with the ability to detect hazardous gas; (2)with the capability of the network transmission of GSM; (3)with the ability of UPS system. Numerous simulations have been made and some successful results are obtained. Keywords: hazardous gas, single-chip controller, carbon monoxide, GSM.
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Hsieh, Ming-Hui, and 謝明輝. "Design and Implementation of Control System for Treadmill Based on Microcontroller." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/27817791449057061939.
Full textAbstract:
碩士國立彰化師範大學
電機工程學系
97
This thesis aims to design and implement the driving system for the treadmill. The system is designed in a microcontroller ATmega32. The traditional speed sensor uses the reed switch as the sensor component, but its response time is too long while operating in low speed. To improve the stability in low speed and the response time, we adds the voltage and the current of the motor as the compensation signals. The experiment approves that the proposed method has good functions of speed control when the system operates in high and low speed.
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Chun-ChengChen and 陳俊丞. "Object Location Identification System Using Microcontroller-based Harmonic Reflection Detection Circuit." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/2b44vp.
Full textAbstract:
碩士國立成功大學
電機工程學系
104
In our thesis, we designed a object identification system by detecting the harmonic power wich our operated frequency is 915 MHz. The whole construction is including a dual-band Yagi- Uda antenna, Arduino microcontroller, RF-DC rectifier. We also had tape out a power transmission circuit chip which include a voltage controlled oscillator (VCO) and a Class-E preamp for emulating an RF power source. From the measurement results of object identification system, the proposed S11 of dual-band Yagi-Uda antenna are -16.438 dB and -17.385 dB at 915 MHz and 1830 MHz. The RF-DC rectifier can export an output voltage of 0.09 V to 1.31 V DC voltage from 0 dBm to 14 dBm as RF power source. The whole object identification system can get the increment voltage more than 0.17 V to identify the existence of object. The total chip area including VCO and Class-E preamp is 2.89 mm2. As for the VCO, the output power is 1.175 dBm at 915 MHz, turing range is 231 MHz, the power consumption is 5.49 mW and the phase noise is -119.22 dBc/Hz at 1MHz frequency offset. The output power of whole chip design (VCO+Class-E preamp) is 1.91 dBm and total power consumption is 87.21 mW.
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Castro, Filipe Campos Meira. "Mobile robot electronic system with a network and microcontroller based interface." Master's thesis, 2008. http://hdl.handle.net/1822/65411.
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Integrated Masters at Electronics and Computers EngineeringNowadays mobile robots are expected to be a desire at several services to afford man facilities and increase safety in any kind of duties. Mobility is a key issue in robotics and a challenging subject for any research and development. It combines cognitive capabilities focused on sensorial input and human interaction with intelligent control of the drive systems and requires real mechatronics engineering solutions to enable robust and reliable operation. In the European Centre for Mechatronics [W1] mobile robots have been research subjects for years. A mobile platform with semi-autonomous functionality has been developed years ago. It has been used as a demonstration and test platform to study mobility and cognitive control. In the University of Minho [W3] and RWTH University [W2] that kind of research is also important and the industry support gives a solid development sign to the institutions. As the control system capacity on board of the vehicle has reached limits, a new system architecture with more powerful controller elements was planned to replace the old one. In this context the key objective of the project was to design and develop a new embedded system capable of controlling the mobile platform drives using ATMega microcontroller technology.
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Hung, Wei-Sheng, and 洪為勝. "Design of a Distributed Multi-Microcontroller Based Control System Development Environment." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/91937755131667175741.
Full textAbstract:
碩士淡江大學
航空太空工程學系碩士班
102
This Thesis investigates the design and implementation of a distributed multi-microcontroller based control system development environment. A DSPIC microcontroller (MCU) based system architecture is established first. The system contains three major parts, namely, sensing and attitude determination section, control section, and ground section. The sensing and attitude determination section consists of four circuit boards (master control board, slave control board, sensor board, and power supply board) with identical size ( ). The sensor boards contains three axes inertial measurement unit (include gyro, accelerometer, and electronic compass) and a GPS receiver. The sensors and the DSPIC MCUs are connected over an I2C (inter-integrated circuit) data bus with the DSPIC on the master control board as the master MCU. Unscented Kalman filter based attitude estimation is incorporated in this embedded system. With incorporation of modular design, combination of the master control board and the slave control board will form the control section of the system. Communications between sections are achieved through USART interface. Because of modular design, the system can be easily expanded to integrate other avionics functions.
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Doho, Gonçalves Justino. "Microcontroller based data acquisition and control of a solar thermal energy system." Thesis, 2009. http://hdl.handle.net/10413/5426.
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A solar thermal energy system is being rebuilt at University of KwaZulu-Natal School
of Physics. A similar system is also being built in the University Eduardo Mondlane –
Maputo Mozambique, in a team development work. The system is composed
mainly of the following subsystems:
(i) An Energy capture subsystem: paraboloidal dish concentrator with a heat
receiver, mounted on a dual axis polar mount sun tracking assembly;
(ii) An Energy storage subsystem: rock-bed thermal energy storage (TES) system;
(iii) An Energy utilization subsystem: any user heat utilization (like a cooking or
water boiling appliance); and
(iv) A monitoring and control subsystem.
The subsystem (iv) for performing a controlled charging of the Thermal Energy
Storage from a hot plate simulated solar heat, was formerly developed and it was
based on 2 conventional data loggers (HP/Agilent) and programs running on 2 PCs.
The present work is aimed at performing the same plus additional monitoring and
control tasks, based on a low cost microcontroller design. The monitoring and
control subsystem based on the Atmel ATmega 32 MCU has been designed and
built, capable of performing data acquisition, data logging and control of relevant
system variables such as, hour and declination angles of the tracking concentrator;
to cite some of the main variables.
Besides a huge work of designing, building, programming and testing the
microcontroller system itself, a special focus was given to the monitoring and
control of the solar heat concentrator, to perform a dual axis sun tracking, so as to
get as much as possible of the available solar radiation. Measurements of various
system parameters such as, the sun tracking actual hour and declination angles,
the inlet and outlet temperatures of both the heat receiver and the rock bed heat
storage, etc., for the system under consideration have been carried out.Thesis (M.Sc.)-University of KwaZulu-Natal, Westville, 2009.
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Lin, Jung-Hao, and 林榮豪. "Microcontroller-based Embedded Deep Neural Network System Development and Rapid Application Deployment." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/7gp6ca.
Full textAbstract:
碩士國立中央大學
資訊工程學系在職專班
107
At present, mainstream AI technology mostly relies on high-performance computer hosts, and embedded systems running on microcontrollers are rare. If the mature AI technology can be run on the microcontroller, you can not only let AI technology be applied in more fields, but also bring considerable power saving in many applications. In this research, the virtual machine was added to enable the microcontroller to be flexibly deployed, so that the deep neural network application implemented in the microcontroller can be deployed in a more convenient manner. After making up for the gap in the convenience of the deep neural network between the microcontroller and the host computer, the aforementioned goals will become feasible. The subsequent experiments also verified the function of the virtual machine and the correctness of the implemented neural network. This research preserves the advantages of the microcontroller and overcomes its shortcomings while bringing deep neural network applications into the microcontroller-based embedded system. Compared with high-energy and high-cost hosts, the extremely low power consumption system of this research will bring considerable energy savings.
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Lee, Chang-Chi, and 李昌錡. "Integration and application of biosensors system based on portable device with microcontroller." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/62901987155292077100.
Full textAbstract:
碩士國立雲林科技大學
光學電子工程研究所
97
The microcontroller and wireless device to solve method of signal process for biosensor system is presented. The measurement system includes sensing device, signal acquisition unit, process unit, wireless transmission (ZigBee) and measurement platform. The sensing device is based on separative extended gate field effect transistor (SEGFET) structure, and the hydrogen and chlorine ion sensors are prepared. The signal acquisition and process unit is used for acquiring sensing potential, and the concentration of solution can be calculated by using a microcontroller. The wireless transmission provides a wireless sensing network, and which arrives at terminal monitoring. The measurement platform provides saving file, reading file, monitoring, etc, for user, besides, the measurement platform is designed via a LabVIEW software. The hydrogen ion is measured by using original measurement system, the average error quantity is pH0.11. However, the measurement system can be improved by software correction, so the average error quantity modified by software correction is pH0.06. The chlorine ion is measured by original measurement system, the average error quantity is pCl0.17. However, the measurement system can be improved by software correction, so the average error quantity modified by software correction is pCl0.05. In addition, the wireless transmission and measurement platform can provide completive measurement system for user. Moreover, the cost of ion measurement system is considered in this study. Therefore, the ion measurement system is suitable to develop real-time display, multi-function, portable device, high accuracy and easy-to-handle.