Search

This is a detailed paper on the design and implementation of a smart farming system using STM32 microcontrollers and some sensors such as for temperature and humidity, CO2 concentration, soil moisture and light sensors. It focuses on improving crop growing efficiency through automation and intelligent management of greenhouse environment. The system collects environmental parameters and displays them in real time on a display screen or a mobile app for automatic regulation and remote control. This innovative approach aims to improve agricultural productivity by integrating advanced sensor technologies, data collection and control mechanisms. The software used for program writing and designing is Keil 5. The hardware and software design aspects of the system were continuously improved after referring to a large number of literary sources, including circuit design, programming. I conducted software and hardware tests,the experimental results were in accordance with the design requirements. The significance of this work is that it revolutionizes the traditional farming methods by introducing precision farming and smart greenhouse management. With the development of science ,technology and intelligence, in recent years, more and more intelligent systems have been applied to daily life. Agricultural intelligence is an emerging industry, how to effectively improve the cultivation efficiency of crops, efficient use of crop growth period, greenhouse environment detection and regulation has become the most critical part of the market there are many intelligent machines that can help improve the efficiency of plant cultivation. However, most of the key elements such as environmental monitoring, automatic processing, timely alarms and remote control are not perfectly combined together, and can only achieve simple functions. Therefore, it is particularly important to design an intelligent agricultural system that combines single-chip microcomputer technology, sensor technology

This paper presents the design of a 2P (50×50×50mm) PocketQube satellite which will be used in STEM laboratory classes. The proposed system was designed with emphasis on modularity, ease of replacement using commercial off-the-shelf components, and easy understanding of the subsystems one can find in a satellite of this type. It also encourages students to come up with their own ideas and modules. The satellite itself is made out of four main modules: On-Board Computer, Communication module, Electric Power System module, and Payload module. These four modules are encapsulated in a structure made entirely out of PCBs and together form the basis of the satellite.

This paper presents the design of a 2P (50×50×50mm) PocketQube satellite which will be used in STEM laboratory classes. The proposed system was designed with emphasis on modularity, ease of replacement using commercial off-the-shelf components, and easy understanding of the subsystems one can find in a satellite of this type. It also encourages students to come up with their own ideas and modules. The satellite itself is made out of four main modules: On-Board Computer, Communication module, Electric Power System module, and Payload module. These four modules are encapsulated in a structure made entirely out of PCBs and together form the basis of the satellite.

The 32-bit STM32 microcontroller family is the most widely used for drone controller design today. On the other hand, Arduino is an open-source and affordable microcontroller programming platform. This work proposes the design and implementation of a quadcopter drone controlled by an STM32 family microcontroller programmed using the Arduino environment. Different components of a quadcopter system have been developed and validated, and they have been integrated to obtain a fully functional final prototype that allows reconfiguration and improvement according to future needs. Finally, based on the developed base configuration, an additional altitude control system has been designed and integrated using information from a barometric sensor.

This thesis report is about designing a prototype and establishing audio communication between a computer and Digital Signal Processor (DSP) using two preamp circuits using both auxiliary and USB connection. The paper gives the reader an overview on how audio is transmitted from a computer, through the system and to the desired output. The reader should also get a better understanding of how an AD-converter samples the incoming signal to the Discrete plane and how an AUX or phone connector works. This information can be used for designing preamp circuits to communicate between a computer and the DSP. The DSP circuit uses an STM32 processor to control the incoming and outgoing signals with the use of ADC and DAC conversion. The DSP also uses microphones to capture surrounding sound. An addition is to make a prototype on how to use these microphones to send the signal upstream to the computer. The microphone is then benchmarked with the use of Matlab, calculating Total Harmonic Distortion. Management and optimization of code structure and resources is done in the source files of the project. Using imperative C programing, large functions are broken down into smaller functions to ease readability and control flow. The result is a prototype circuit that can communicate audio signals with both audio jack and USB between computers input and output to the DSP. Using CubeMX in conjunction with CubeIDE to add additional ADC channels to be able to incorporate an automatic source control when the audio jack or USB is connected., Denna avhandling handlar om att designa en prototyp och etablera ljudkommunikation mellan en dator och en digital signalprocessor (DSP) med hjälp av två förstärkarkretsar genom både aux- och USB-anslutning. Rapporten ger läsaren en översikt över hur ljud skickas från en dator, genom systemet och till önskad utgång. Läsaren bör också få en bättre förståelse för hur en AD-omvandlare fungerar för att sampla den inkommande signalen till tidsdiskreta planet och hur en AUX- eller telekabel fungerar. Målet är att använda denna information för att skapa förstärkare som kan kommunicera mellan en dator och DSP:en. DSP-kretsen använder en STM32-processor för att hantera de inkommande och utgående signalerna med användning av ADC- och DAC-omvandling. DSP:en använder också mikrofoner för att fånga omgivande ljud. Ett tillägg är att skapa en prototyp för hur man kan använda en av mikrofonerna för att skicka signalen till datorn. Mikrofonen jämförs sedan med hjälp av Matlab genom att beräkna total harmonisk distorsion. Hantering och optimering av kodstruktur och resurser görs i projektets källkodsfiler. Genom att använda imperativ C-programmering bryts stora funktioner ned i mindre funktioner för att underlätta läsbarheten och styrningen av flödet. Resultatet är en prototypkrets som kan kommunicera ljudsignaler med både ljuduttag och USB mellan datorns in- och utgång och DSP:en. Genom att använda CubeMX tillsammans med CubeIDE läggs ytterligare ADC-kanaler för att möjliggöra automatisk källkontroll när ljuduttaget eller USB-anslutningen är ansluten.

This thesis report is about designing a prototype and establishing audio communication between a computer and Digital Signal Processor (DSP) using two preamp circuits using both auxiliary and USB connection. The paper gives the reader an overview on how audio is transmitted from a computer, through the system and to the desired output. The reader should also get a better understanding of how an AD-converter samples the incoming signal to the Discrete plane and how an AUX or phone connector works. This information can be used for designing preamp circuits to communicate between a computer and the DSP. The DSP circuit uses an STM32 processor to control the incoming and outgoing signals with the use of ADC and DAC conversion. The DSP also uses microphones to capture surrounding sound. An addition is to make a prototype on how to use these microphones to send the signal upstream to the computer. The microphone is then benchmarked with the use of Matlab, calculating Total Harmonic Distortion. Management and optimization of code structure and resources is done in the source files of the project. Using imperative C programing, large functions are broken down into smaller functions to ease readability and control flow. The result is a prototype circuit that can communicate audio signals with both audio jack and USB between computers input and output to the DSP. Using CubeMX in conjunction with CubeIDE to add additional ADC channels to be able to incorporate an automatic source control when the audio jack or USB is connected., Denna avhandling handlar om att designa en prototyp och etablera ljudkommunikation mellan en dator och en digital signalprocessor (DSP) med hjälp av två förstärkarkretsar genom både aux- och USB-anslutning. Rapporten ger läsaren en översikt över hur ljud skickas från en dator, genom systemet och till önskad utgång. Läsaren bör också få en bättre förståelse för hur en AD-omvandlare fungerar för att sampla den inkommande signalen till tidsdiskreta planet och hur en AUX- eller telekabel fungerar. Målet är att använda denna information för att skapa förstärkare som kan kommunicera mellan en dator och DSP:en. DSP-kretsen använder en STM32-processor för att hantera de inkommande och utgående signalerna med användning av ADC- och DAC-omvandling. DSP:en använder också mikrofoner för att fånga omgivande ljud. Ett tillägg är att skapa en prototyp för hur man kan använda en av mikrofonerna för att skicka signalen till datorn. Mikrofonen jämförs sedan med hjälp av Matlab genom att beräkna total harmonisk distorsion. Hantering och optimering av kodstruktur och resurser görs i projektets källkodsfiler. Genom att använda imperativ C-programmering bryts stora funktioner ned i mindre funktioner för att underlätta läsbarheten och styrningen av flödet. Resultatet är en prototypkrets som kan kommunicera ljudsignaler med både ljuduttag och USB mellan datorns in- och utgång och DSP:en. Genom att använda CubeMX tillsammans med CubeIDE läggs ytterligare ADC-kanaler för att möjliggöra automatisk källkontroll när ljuduttaget eller USB-anslutningen är ansluten.

Counting opening cycles on an automatic sliding door is of great interest for a company manufacturing doors, such as ASSA Abloy. These metrics could be used for consumer statistics or for door diagnostics. Counting opening cycles is seemingly trivial when there is access to the door’s internal diagnostics or having adequate sensors. Problems start to arise when these are not present, which is the case when working with third party door vendors, and sensors can often be expensive and time consuming to install. This report investigates the process of counting opening cycles using real-time sound analysis on a microcontroller. Due to microphones having low cost and lack need for precise placement, ASSA Abloy is considering implementing this on their IoT gateway hardware, ready to be mounted on any third party door. To achieve this, two different algorithms were tested - signal energy analysis and Mel Frequency Cepstrum Coefficient (MFCC) analysis. An implementation was also tested were both algorithms were used. These were then tested on four different kinds of automatic doors. Signal energy detection performs well on all types of doors but is prone to false positives from external noise. MFCC detection is more resistant to false positives from a noisy environment, but often detects false positives during the closing of the door, and only gives good results for two doors. The combined algorithm similarly only performed well for two of the doors, but had the fewest false positives. These results show that in an ideal environment signal energy detection will suffice, but in noisy scenarios the combined algorithms show promise, assuming the MFCC detection can be improved or an initial calibration to the door is added., Using sound analysis to count automatic door opening cycles: Counting door cycles is useful for a company manufacturing automatic doors, especially if there is a solution that works for any automatic door. Different methods of sound analysis were tested on different types of doors to determine how best to detect opening cycles for any door. Counting how many times an automatic door opens - the number of opening cycles, is a seemingly trivial task. For a door manufacturer, for example ASSA Abloy, this task is simple, as this information can be accessed with the internal electronics of the door. In certain cases, such as if ASSA Abloy needed to do maintenance on a door from a different company, this might not be possible. This can be problematic if usage statistics are desired by a customer, or if ASSA Abloy is contracted to perform maintenance for an entire door building containing various types of doors and want to use opening cycles as a diagnostic tool. Because of this, the need for external sensors arises. Placing sensors to detect when the door is opening can however be time consuming and expensive when doing it for many doors. This is why this paper investigates the use of microphones for listening for door openings instead. Using microphones has two big advantages - low cost and ease of installation. Although an algorithm for doing this is inherently more complex to develop, it has the potential to reduce cost when applied at scale. The sound analysis is done on a microphone connected to a microcontroller which analyses the audio in real-time. By recording the sound of multiple opening cycles from different doors suitable parameters could be programmed into the microcontroller when tuning the algorithms. Two different methods were tested - signal energy analysis and Mel Frequency Cepstrum Coefficient (MFCC) analysis. The signal energy analysis is a very simple algorithm detecting sustained periods of high signal energy - prone to many false positives from back

En aquest document es descriu el desenvolupament d'un sistema d'adquisició i anàlisi de dades que permet optimitzar el funcionament d'una motocicleta elèctrica de competició. Més concretament, s'expliquen les magnituds que es volen monitoritzar i els sensors escollits per quantificar-ne el valor, els criteris de disseny seguits per fabricar les tres PCB (plaques de circuit imprès), encarregades de la lectura dels sensors, i la programació dels microcontroladors mitjançant el llenguatge C. A més a més, també es descriu el desenvolupament d'una aplicació personalitzada que permet visualitzar el comportament de la motocicleta en els diferents punts del circuit. El programari utilitzat al llarg del treball és l'Altium Designer pel disseny de les PCB, el STM32 Cube IDE per a la programació dels microcontroladors i l'extensió de Matlab App Designer pel desenvolupament de l'aplicació d'anàlisi. Finalment, s'explica el procés d'integració dins de la motocicleta de tots els components electrònics que formen el sistema, amb l'objectiu d'obtenir tota la informació desitjada sense influir en el rendiment del vehicle ni en l'ergonomia del pilot., En este documento se describe el desarrollo de un sistema de adquisición y análisis de datos que permite optimizar el funcionamiento de una motocicleta eléctrica de competición. Más concretamente, se explican las magnitudes que se desean monitorizar y los sensores escogidos para cuantificar su valor, los criterios de diseño aplicados para fabricar las PCB (placas de circuito impreso), encargadas de la lectura de los sensores, y la programación de los microcontroladores mediante lenguaje C. Asimismo, también se describe el desarrollo de una aplicación personalizada que permite visualizar el comportamiento de la motocicleta en diferentes puntos del circuito. El software utilizado a lo largo del trabajo es el Altium Designer para el diseño de las PCB, el STM32 Cube IDE para la programación de los microcontroladores y la extensión de Matlab App Designer para el desarrollo de la aplicación de análisis. Finalmente, se explica el proceso de integración dentro de la motocicleta de todos los componentes electrónicos que forman el sistema, con el objetivo de obtener toda la información deseada sin influir en el rendimiento del vehículo ni en la ergonomía del piloto., This document describes the development of a data acquisition and analysis system that optimizes the operation of an electric racing motorcycle. More specifically, it explains the magnitudes that will be monitored and the sensors chosen to quantify their values, the design criteria applied to manufacture the PCBs (printed circuit boards) responsible for reading the sensors, and the programming of the microcontrollers using C language. Likewise, it also describes the development of a personalized application that allows viewing the behaviour of the motorcycle at different points of the circuit. The software used throughout the work is Altium Designer for the design of the PCBs, the STM32 Cube IDE for the programming of the microcontrollers, and Matlab add-on App Designer for the development of the analysis application. Finally, it explains the integration process within the motorcycle of all the electronic components that make up the system, with the aim of obtaining all the desired information without influencing the performance of the vehicle nor the ergonomics of the rider.

Tato diplomová práce se zabývá návrhem a konstrukcí analyzátoru vybraných vlastností dvojbranu. Teoretická část se věnuje teorii dvojbranů a n-branů obecně a jak je měřit. V praktické části je popsán návrh a postup konstrukce analyzátoru pro měření absolutních hodnot přenosu dvojbranu v závislosti na frekvenci. Pro analyzování a měření absolutních hodnot přenosu dvojbranu jsou využívány S-parametry (|S21| a |S12|). Funkčnost zařízení je ověřena sadou měření, které jsou součástí této práce., This thesis is aimed on a design and construction of a double-gates circuits analyzer. Theory and measurements of the double-gates circuits are described in a theoretical part. A description of the analyzer's design and construction of this analyzer are described in the practical part. The analyzer measures absolute values of the transient characteristics in the frequency dependence. S-parameters (|S21| and |S12|) are used for the double-gates circuit analysis. The designed analyzer was tested by the set of the measurements, the results of these measurements are part of this thesis and shows, that the analyzer works correctly., Fakulta elektrotechniky a informatiky, Cílem diplomové práce bylo navrhnout analyzátor vybraných parametrů dvojbranů v definovaném frekvenčním pásmu. Student prokázal schopnost aplikovat znalosti získané v průběhu magisterského studia - z oboru mikrovlnné techniky, návrhu DPS či programování v různých programovacích jazycích. Práce výrazně převyšuje svou náročností a komplexnostní rozsah standardní diplomové práce. Cíle diplomové práce byly splněny., Dokončená práce s úspěšnou obhajobou

Bakalářská práce se věnuje návrhu a realizaci simulátoru snímače kolejových vozidel. Rešerše nás seznámí s využitím skutečného (simulovaného) senzoru, jeho principem a uvede možnosti pro dosažení jeho vstupně-výstupních parametrů. Obsahem jsou také algoritmy, použité pro generování výstupních průběhu pomocí mikropočítače. Závěr práce porovnává výsledky stanovených algoritmů., This bachelor's thesis focuses on the design and implementation of a railway wheel pass sensor simulator. The thesis introduces us to the principle of the real (simulated) sensor and presents the possibilities for achieving its input-output parameters. In the thesis are also included algorithms used to generate the output waveforms using a microcontroller. The work concludes by comparing the effectiveness of the specified algorithms., Fakulta elektrotechniky a informatiky, Cílem bakalářské práce byl návrh simulátoru snímače průjezdu kolejového vozidla. Přínosem studenta je zejména vlastní návrh a realizace konstrukčního řešení elektronického zařízení zadaných technických specifikací s požadavkem na komplexní řešení zadaného cíle. Toto komplexní řešení vyžadovalo od studenta prokázání poměrně širokého záběru jeho dovedností. Práce svým zaměřením patří do kapitoly aktuálně zpracovávaných témat zaměřujících se na využití moderních technických prostředků automatizace. Cíle bakalářské práce byly splněny. Komise navrhuje práci na ocenění za vynikající tvůrčí výsledky dle článku 3, písm. b) Stipendijního řádu Univerzity Pardubice., Dokončená práce s úspěšnou obhajobou

This thesis is part of a project where a 120A, 50V (12S Lithium-Polymer battery) electronic speed controller (ESC) with Bidirectional DShot600 support is prototyped. This thesis focuses on the communication and sensing aspects of the ESC. It discusses the implementation of the DShot communication protocol on an STM32G431KBT6 microcontroller. Also, the microcontroller senses phase currents and phase voltages from a BLDC motor and has to provide all the necessary information and processing resources for a control algorithm to be implemented. A PCB is designed to break out all the required interfaces of the microcontroller. Lastly, temperature management is implemented to prevent overheating of the inverter hardware by means of throttling. The DShot implementation has full bidirectional functionality with 3.4% package corruption. All sensor values are accurately provided to the control algorithm, and temperature and speed information are provided as DShot telemetry. Due to time constraints and lack of integration with the control algorithm, the behavior during anomalies such as power interrupts is not yet thoroughly tested., Electrical Engineering

241 p. -- Bibliogr.: p. 240-241, En el presente documento se expone el desarrollo de un cliente MQTT que permite realizar comunicaciones seguras mediante TLS, para ser usado en una aplicación que se ejecute sobre un sistema embebido. La aplicación creada también hace uso de otros protocolos TCP/IP, motivo por el cual se han desarrollado clientes adicionales que también son expuestos en este documento. El documento consta de dos partes. La primera parte es la memoria, y en ella se exponen aquellos aspectos teóricos y prácticos de los que es recomendable tener conocimiento para hacer uso del proyecto de programación creado, escrito en lenguaje C y que se encuentra en la segunda parte, de anexos.

LoRaWAN is a public Wireless Sensor network with excellent properties like being long-range, low-energy radios and resulting in long battery life. Devices are connected to this network through gateways, and they will run in that deployment for years without replacement. Therefore, bugs and security issues in such devices' firmware are present for a long time, unless firmware updates are applied to fix them. Firmware-Updates Over-The-Air (FUOTA) is a firmware update application framework for LoRaWAN, but packet loss is an unsolved issue for such firmware updating frameworks. State-of-the-art packet dissemination uses the Low-Density Parity Checks (LDPC), but this has decoding overhead. Also, it is inflexible due to its fixed-rate nature. The code can not be dynamically adjusted to adapt to temporary changes in channel conditions. In this work, we provide critical analysis to justify replacing Low-Density Parity Checks code (LDPC) proposed in FUOTA with the famous code Random Linear Network Coding (RLNC). The benefit of RLNC shows when scaling to multicast networks using LoRaWAN FUOTA as fewer messages need to be exchanged to serve the complete network of firmware updates. An analysis is presented on how to configure the finite field size, generation size, and redundancy for generation-based RLNC. The parameters are optimized to cope with the worst-case packet-error rate. As such, RLNC can optimally counter every lost packet with redundancy with near-zero decoding overhead. Since devices sleep after decoding a set of fragments, or the generation, sending additional fragments does not decrease efficiency. Finally, the decoding probability is provided as an analytical tool to show that a specific amount of redundancy can deal with a specific worst-case packet-error rate. To evaluate and test the RLNC code for LoRa, embedded firmware and terminal software have been developed to do indoor and outdoor measurements. This testbed has been developed with a custom cont, Electrical Engineer | Embedded Systems

This report details the process of developing libraries to handle data management on two types of non-volatile memory interfacing with an STM32 microprocessor. This was done at the request of Suonobouno AB, who are developing digital and analog synthesizers. This work included the development of generic open-ended memory management functions, as well as functions for handling the specific data structures used in the company's instruments, the later building on the former. In the end, a library was developed that can perform the reading and writing of data to the storage mediums through a clean interface devoid of unnecessary detail. The solution is highly modular, with a clear strategy for managing coupling, to allow the library to grow and develop with further integration., I denna rapport beskrivs arbetet med att utveckla bibliotek för hantering av externa lagringsenheter som används av en STM32 mikroprocessor. Detta utfördes på uppdrag av Suonobouno AB som utvecklar digitala och analoga syntar. Detta arbete innefattade framtagandet av generiska funktioner för minneshantering, så väl som funktioner anpassade för de specifika datastrukturer som förekommer i det system som är den tilltänkta applikationen. I slutändan åstadkoms ett bibliotek som kan utföra den nödvändiga läsningen och lagringen av data till de två lagringsmedia som omfattades av projektet. Detta kan kontrolleras genom ett rent interface som inte kräver kännedom om tekniska detaljer bakom lagringsteknikerna. Biblioteket är modulärt, med en tydlig strategi för att hantera beroenden, så att det kan växa och utvecklas med vidare integrering.

This work deals with designing and constructing a miniature scientific calculator. The thesis describes the design of the electronic circuit, programming of the microcontroller and mechanical design of 3D printed parts.

This work deals with designing and constructing a miniature scientific calculator. The thesis describes the design of the electronic circuit, programming of the microcontroller and mechanical design of 3D printed parts.

This work deals with designing and constructing a miniature scientific calculator. The thesis describes the design of the electronic circuit, programming of the microcontroller and mechanical design of 3D printed parts.

This report details the process of developing libraries to handle data management on two types of non-volatile memory interfacing with an STM32 microprocessor. This was done at the request of Suonobouno AB, who are developing digital and analog synthesizers. This work included the development of generic open-ended memory management functions, as well as functions for handling the specific data structures used in the company's instruments, the later building on the former. In the end, a library was developed that can perform the reading and writing of data to the storage mediums through a clean interface devoid of unnecessary detail. The solution is highly modular, with a clear strategy for managing coupling, to allow the library to grow and develop with further integration., I denna rapport beskrivs arbetet med att utveckla bibliotek för hantering av externa lagringsenheter som används av en STM32 mikroprocessor. Detta utfördes på uppdrag av Suonobouno AB som utvecklar digitala och analoga syntar. Detta arbete innefattade framtagandet av generiska funktioner för minneshantering, så väl som funktioner anpassade för de specifika datastrukturer som förekommer i det system som är den tilltänkta applikationen. I slutändan åstadkoms ett bibliotek som kan utföra den nödvändiga läsningen och lagringen av data till de två lagringsmedia som omfattades av projektet. Detta kan kontrolleras genom ett rent interface som inte kräver kännedom om tekniska detaljer bakom lagringsteknikerna. Biblioteket är modulärt, med en tydlig strategi för att hantera beroenden, så att det kan växa och utvecklas med vidare integrering.

This work deals with designing and constructing a miniature scientific calculator. The thesis describes the design of the electronic circuit, programming of the microcontroller and mechanical design of 3D printed parts.

This work deals with designing and constructing a miniature scientific calculator. The thesis describes the design of the electronic circuit, programming of the microcontroller and mechanical design of 3D printed parts.

This work deals with designing and constructing a miniature scientific calculator. The thesis describes the design of the electronic circuit, programming of the microcontroller and mechanical design of 3D printed parts.

LoRaWAN is a public Wireless Sensor network with excellent properties like being long-range, low-energy radios and resulting in long battery life. Devices are connected to this network through gateways, and they will run in that deployment for years without replacement. Therefore, bugs and security issues in such devices' firmware are present for a long time, unless firmware updates are applied to fix them. Firmware-Updates Over-The-Air (FUOTA) is a firmware update application framework for LoRaWAN, but packet loss is an unsolved issue for such firmware updating frameworks. State-of-the-art packet dissemination uses the Low-Density Parity Checks (LDPC), but this has decoding overhead. Also, it is inflexible due to its fixed-rate nature. The code can not be dynamically adjusted to adapt to temporary changes in channel conditions. In this work, we provide critical analysis to justify replacing Low-Density Parity Checks code (LDPC) proposed in FUOTA with the famous code Random Linear Network Coding (RLNC). The benefit of RLNC shows when scaling to multicast networks using LoRaWAN FUOTA as fewer messages need to be exchanged to serve the complete network of firmware updates. An analysis is presented on how to configure the finite field size, generation size, and redundancy for generation-based RLNC. The parameters are optimized to cope with the worst-case packet-error rate. As such, RLNC can optimally counter every lost packet with redundancy with near-zero decoding overhead. Since devices sleep after decoding a set of fragments, or the generation, sending additional fragments does not decrease efficiency. Finally, the decoding probability is provided as an analytical tool to show that a specific amount of redundancy can deal with a specific worst-case packet-error rate. To evaluate and test the RLNC code for LoRa, embedded firmware and terminal software have been developed to do indoor and outdoor measurements. This testbed has been developed with a custom cont, Electrical Engineering | Embedded Systems

[ES] Se trata de implementar el control de un servomotor mediante una tarjeta Nucleo 32. La primera fase sería implementar los drivers para el acceso al hardware: sensores de posición, etapa de potencia, etc. Luego habría que implementar la comunicación con un sistema superior por determinar (¿discovery?) mediante el bus SPI. Finalmente, habría que implementar las funciones necesarias para el control y el funcionamiento de un servomotor: generador de trayectoria, controlador, homing, etc. De este trabajo podrían salir dos TFGs dependiendo del alcance que se quiere lograr. Existe la posibilidad de trabajo en equipo.

[ES] Se trata de implementar el control de un servomotor mediante una tarjeta Nucleo 32. La primera fase sería implementar los drivers para el acceso al hardware: sensores de posición, etapa de potencia, etc. Luego habría que implementar la comunicación con un sistema superior por determinar (¿discovery?) mediante el bus SPI. Finalmente, habría que implementar las funciones necesarias para el control y el funcionamiento de un servomotor: generador de trayectoria, controlador, homing, etc. De este trabajo podrían salir dos TFGs dependiendo del alcance que se quiere lograr. Existe la posibilidad de trabajo en equipo.

[ES] Se trata de implementar el control de un servomotor mediante una tarjeta Nucleo 32. La primera fase sería implementar los drivers para el acceso al hardware: sensores de posición, etapa de potencia, etc. Luego habría que implementar la comunicación con un sistema superior por determinar (¿discovery?) mediante el bus SPI. Finalmente, habría que implementar las funciones necesarias para el control y el funcionamiento de un servomotor: generador de trayectoria, controlador, homing, etc. De este trabajo podrían salir dos TFGs dependiendo del alcance que se quiere lograr. Existe la posibilidad de trabajo en equipo.

[ES] Se trata de implementar el control de un servomotor mediante una tarjeta Nucleo 32. La primera fase sería implementar los drivers para el acceso al hardware: sensores de posición, etapa de potencia, etc. Luego habría que implementar la comunicación con un sistema superior por determinar (¿discovery?) mediante el bus SPI. Finalmente, habría que implementar las funciones necesarias para el control y el funcionamiento de un servomotor: generador de trayectoria, controlador, homing, etc. De este trabajo podrían salir dos TFGs dependiendo del alcance que se quiere lograr. Existe la posibilidad de trabajo en equipo.

This thesis focuses on improving the readout of the ADome by implementing MCUs at each antenna probe, enabling local sampling and memory storage. The serial communication protocols CAN, SPI and I2C are considered and compared with one another. Ultimately, CAN is decided due to its robustness and simplicity which make the system cheap and ensures that the measurement will not get corrupted during transmission. Moreover, implementations of the new readout protocol are able to obtain measurement data store information at the local MCU. Test setups verification showed that antenna location can be stored and retrieved. Furthermore, the readout protocol is able to acquire multiple samples from the ADC locally.

Amb el fi de realitzar un seguiment d’espècies marines, la implantació d’etiquetes acústiques (TAG) és un mètode freqüent utilitzat pels científics. Buscant crear un tag acústic amb millors prestacions que els actuals, s’ha creat el projecte “Sistemes acústics submarins per al monitoratge del comportament espacial d’espècies”(SASES RTI2018-095112-B-I00). El present document, aborda el disseny de l’etapa digital del microcontrolador, posterior a l’etapa analògica del tag acústic. El tag té la capacitat de generar senyals analògics arbitraris per transmetre informació, llegir i identificar senyals que contenen informació, recol·lectar informació ambiental a través de sensors i funcionar en diferents modes els quals permeten enviar informació de forma periòdica o funcionar amb un baix consum energètic. A més el sistema permet calcular el temps de vol del senyal per determinar la localització del tag acústic. Utilitzant un microcontrolador de la família STM32 basat en un processador Cortex-M d'ARM, s’ha desenvolupat un programa capaç de controlar diferents processos que el tag acústic ha de poder realitzar. S’ha desenvolupat la programació per a control del DAC, ADC, comunicació per I2C amb els sensors, temporització dels modes de funcionament i gestió del consum energètic., Con la finalidad de realizar un seguimiento de especies marines, el uso de etiquetas acústicas (TAG) es un método frecuente al que recurren los científicos. Buscando crear un tag acústico con mejores prestaciones que los existentes actualmente, se ha creado el proyecto “Sistemas acústicos submarinos para la monitorización del comportamiento espacial de especies” (SASES RTI2018-095112-B-I00). El presente documento aborda el diseño de la etapa digital del microcontrolador, posterior a la etapa analógica del tag acústico. El tag tiene la capacidad de generar señales analógicas arbitrarias para transmitir la información, leer e identificar señales que contienen información, recolectar información ambiental a través de sensores y funcionar en diferentes modos, los cuales permiten enviar información de forma periódica y un bajo consumo energético. Además, el sistema permite calcula el tiempo de vuelo de las señales para determinar la ubicación del tag acústico. Utilizando un microcontrolador de la familia STM32 basado en un procesador Cortex-M de ARM, se ha desarrollado un programa capaz de controlar diferentes procesos que el tag acústico puede realizar. Se ha desarrollado la programación para el control DAC, ADC, comunicación por I2C con los sensores, temporización de los modos de funcionamiento y gestión del consumo energético., In order to be able to track down marine species, implanting an acoustic tag is a widely used method used by scientists. Therefore, the project “Submarine acoustic systems for the species spatial monitoring” (SASES RTI2018-095112-B-I00) aims to create an acoustic tag with better features than the ones in the market. The present document, addresses the design of the microcontroller’s digital stage, which comes after the analog stage of the acoustic tag. The tag is capable of generating information carrier arbitrary analog signals, capture and identify information from the signals, retrieve environmental information using sensors and operate in different modes which allow information to be sent periodically or reduce the power consumption. Additionally, the System is capable of calculating the time of Flight of the transmitting signals to determinate the tag location. Using a microcontroller from the STM32 family based on an ARM Cortex-M processor, the developed program is capable of controlling different processes that the acoustic tag must be able to perform. Programming has been done for DAC control, ADC, I2C communication with sensors, timing of operating modes and energy consumption management.

This thesis focuses on improving the readout of the ADome by implementing MCUs at each antenna probe, enabling local sampling and memory storage. The serial communication protocols CAN, SPI and I2C are considered and compared with one another. Ultimately, CAN is decided due to its robustness and simplicity which make the system cheap and ensures that the measurement will not get corrupted during transmission. Moreover, implementations of the new readout protocol are able to obtain measurement data store information at the local MCU. Test setups verification showed that antenna location can be stored and retrieved. Furthermore, the readout protocol is able to acquire multiple samples from the ADC locally.

Tato bakalářská práce se zabývá návrhem a konstrukcí generátoru testovacích signálů. Teoretická část se věnuje teorii signálů a oscilátorů. V praktické části je popsán návrh a postup konstrukce generátoru signálů. Akčními členy jsou DDS a DAC, mezi nimiž vybírá uživatel. Funkčnost zařízení je ověřena sadou měření, které jsou součástí této práce., This bachelor thesis is to design and construction of a test signal generator. The theoretical part is the theory of signals and oscillators. The practical part describes the design and construction of the signal generator. The action members are DDS and DAC, between which the user selects. The functionality of the device is verified by a set of measurements, which are part of this work., Fakulta elektrotechniky a informatiky, Vydařená bakalářská práce zpracována na velmi dobré úrovni. Komisí byla práce hodnocena klasifikací výborně. Rovněž odpovědi na otázky byly zodpovězeny ke spokojenosti členů komise. Komise navrhuje práci na ocenění za vynikající tvůrčí výsledky dle článku 3, písm. b) Stipendijního řádu Univerzity Pardubice., Dokončená práce s úspěšnou obhajobou

This project aims to improve the first version of an electrical impedance tomography card. The main enhancement of this version is the replacement of Raspberry Pi with a better platform - STM32, implementation of voltage and phase shift measurements, and error correction in the first version. The main reason for moving from Raspberry Pi to STM32 is speed, power consumption and ease of use for the end user.

This work deals with the design of a laboratory power supply with a modular number of additional modules for individual inputs, outputs or monitoring circuits. Design of individual parts of control circuits, circuits for monitoring of output parameters and their control by the user is solved. Furthermore, the design of the control module, which is in charge of managing the entire source, including the added modules, is solved.

[ES] Este trabajo se dedica al diseño e implementación de una Unidad de Control de Motor (ECU) para el manejo de un motor de doble combustible GLP-Diésel. La ECU está implementada empleando la tarjeta de desarrollo STM32 Nucleo equipada con el microcontrolador STM32F401, basado en Cortex M4, siendo capaz de controlar el motor, tanto si funciona en modo diésel convencional como en modo doble combustible. Para alcanzar este objetivo se ha diseñado y construido una tarjeta unida mediante los pines I/O compatibles con Arduino disponibles en la STM32 Nucleo. Su función principal es actuar como controlador y etapa final, siendo capaz de generar las salidas apropiadas para el motor sometido a ensayo. En ambos modos de operación (combustión simple y dual fuel), el sistema embebido es capaz de obtener algunos parámetros relevantes tales como las señales de sincronización de fase y del ángulo del cigüeñal y controlar, con un alto grado de flexibilidad debido al firmware del microcontrolador, el tiempo y la forma de las señales de inyección, además de la cantidad de combustible entregada en cada ciclo. Finalmente, el sistema puede funcionar como una aplicación independiente o como un elemento esclavo, controlado por una aplicación diseñada con LabVIEW en un ordenador personal remoto., [EN] This work is devoted to the design and implementation of an Engine Control Unit (ECU) for the management of a LPG-Diesel dual-fuel engine. The ECU is implemented by using a STM32 Nucleo board equipped with the Cortex M4 based (STM32F401) microcontroller, being able to control the engine, whether it works in conventional diesel mode or in a dual fuel combustion fashion. In order to reach this goal a tailored daughter board, attached to the Arduino-compatible I/O pins available on the STM32 Nucleo, has been designed and built. Its main function is to act as a driver and a final stage, capable to generate the proper outputs for the engine under test. In both operation modes (single and dual fuel combustion) , the embedded system will be able to sample some relevant parameters such as phase synchronization signal and crankshaft position signal and to control, with high degree of flexibility due to the microcontroller firmware, the time and the shape of injection signals and the amount of fuel delivered at each cycle. Finally, the system may work as a standalone application or as a slave element, controlled by a purposely designed software running as a LabVIEW application through a remote personal computer.

[ES] Este trabajo se dedica al diseño e implementación de una Unidad de Control de Motor (ECU) para el manejo de un motor de doble combustible GLP-Diésel. La ECU está implementada empleando la tarjeta de desarrollo STM32 Nucleo equipada con el microcontrolador STM32F401, basado en Cortex M4, siendo capaz de controlar el motor, tanto si funciona en modo diésel convencional como en modo doble combustible. Para alcanzar este objetivo se ha diseñado y construido una tarjeta unida mediante los pines I/O compatibles con Arduino disponibles en la STM32 Nucleo. Su función principal es actuar como controlador y etapa final, siendo capaz de generar las salidas apropiadas para el motor sometido a ensayo. En ambos modos de operación (combustión simple y dual fuel), el sistema embebido es capaz de obtener algunos parámetros relevantes tales como las señales de sincronización de fase y del ángulo del cigüeñal y controlar, con un alto grado de flexibilidad debido al firmware del microcontrolador, el tiempo y la forma de las señales de inyección, además de la cantidad de combustible entregada en cada ciclo. Finalmente, el sistema puede funcionar como una aplicación independiente o como un elemento esclavo, controlado por una aplicación diseñada con LabVIEW en un ordenador personal remoto., [EN] This work is devoted to the design and implementation of an Engine Control Unit (ECU) for the management of a LPG-Diesel dual-fuel engine. The ECU is implemented by using a STM32 Nucleo board equipped with the Cortex M4 based (STM32F401) microcontroller, being able to control the engine, whether it works in conventional diesel mode or in a dual fuel combustion fashion. In order to reach this goal a tailored daughter board, attached to the Arduino-compatible I/O pins available on the STM32 Nucleo, has been designed and built. Its main function is to act as a driver and a final stage, capable to generate the proper outputs for the engine under test. In both operation modes (single and dual fuel combustion) , the embedded system will be able to sample some relevant parameters such as phase synchronization signal and crankshaft position signal and to control, with high degree of flexibility due to the microcontroller firmware, the time and the shape of injection signals and the amount of fuel delivered at each cycle. Finally, the system may work as a standalone application or as a slave element, controlled by a purposely designed software running as a LabVIEW application through a remote personal computer.

[ES] Este trabajo se dedica al diseño e implementación de una Unidad de Control de Motor (ECU) para el manejo de un motor de doble combustible GLP-Diésel. La ECU está implementada empleando la tarjeta de desarrollo STM32 Nucleo equipada con el microcontrolador STM32F401, basado en Cortex M4, siendo capaz de controlar el motor, tanto si funciona en modo diésel convencional como en modo doble combustible. Para alcanzar este objetivo se ha diseñado y construido una tarjeta unida mediante los pines I/O compatibles con Arduino disponibles en la STM32 Nucleo. Su función principal es actuar como controlador y etapa final, siendo capaz de generar las salidas apropiadas para el motor sometido a ensayo. En ambos modos de operación (combustión simple y dual fuel), el sistema embebido es capaz de obtener algunos parámetros relevantes tales como las señales de sincronización de fase y del ángulo del cigüeñal y controlar, con un alto grado de flexibilidad debido al firmware del microcontrolador, el tiempo y la forma de las señales de inyección, además de la cantidad de combustible entregada en cada ciclo. Finalmente, el sistema puede funcionar como una aplicación independiente o como un elemento esclavo, controlado por una aplicación diseñada con LabVIEW en un ordenador personal remoto., [EN] This work is devoted to the design and implementation of an Engine Control Unit (ECU) for the management of a LPG-Diesel dual-fuel engine. The ECU is implemented by using a STM32 Nucleo board equipped with the Cortex M4 based (STM32F401) microcontroller, being able to control the engine, whether it works in conventional diesel mode or in a dual fuel combustion fashion. In order to reach this goal a tailored daughter board, attached to the Arduino-compatible I/O pins available on the STM32 Nucleo, has been designed and built. Its main function is to act as a driver and a final stage, capable to generate the proper outputs for the engine under test. In both operation modes (single and dual fuel combustion) , the embedded system will be able to sample some relevant parameters such as phase synchronization signal and crankshaft position signal and to control, with high degree of flexibility due to the microcontroller firmware, the time and the shape of injection signals and the amount of fuel delivered at each cycle. Finally, the system may work as a standalone application or as a slave element, controlled by a purposely designed software running as a LabVIEW application through a remote personal computer.

[ES] Este trabajo se dedica al diseño e implementación de una Unidad de Control de Motor (ECU) para el manejo de un motor de doble combustible GLP-Diésel. La ECU está implementada empleando la tarjeta de desarrollo STM32 Nucleo equipada con el microcontrolador STM32F401, basado en Cortex M4, siendo capaz de controlar el motor, tanto si funciona en modo diésel convencional como en modo doble combustible. Para alcanzar este objetivo se ha diseñado y construido una tarjeta unida mediante los pines I/O compatibles con Arduino disponibles en la STM32 Nucleo. Su función principal es actuar como controlador y etapa final, siendo capaz de generar las salidas apropiadas para el motor sometido a ensayo. En ambos modos de operación (combustión simple y dual fuel), el sistema embebido es capaz de obtener algunos parámetros relevantes tales como las señales de sincronización de fase y del ángulo del cigüeñal y controlar, con un alto grado de flexibilidad debido al firmware del microcontrolador, el tiempo y la forma de las señales de inyección, además de la cantidad de combustible entregada en cada ciclo. Finalmente, el sistema puede funcionar como una aplicación independiente o como un elemento esclavo, controlado por una aplicación diseñada con LabVIEW en un ordenador personal remoto., [EN] This work is devoted to the design and implementation of an Engine Control Unit (ECU) for the management of a LPG-Diesel dual-fuel engine. The ECU is implemented by using a STM32 Nucleo board equipped with the Cortex M4 based (STM32F401) microcontroller, being able to control the engine, whether it works in conventional diesel mode or in a dual fuel combustion fashion. In order to reach this goal a tailored daughter board, attached to the Arduino-compatible I/O pins available on the STM32 Nucleo, has been designed and built. Its main function is to act as a driver and a final stage, capable to generate the proper outputs for the engine under test. In both operation modes (single and dual fuel combustion) , the embedded system will be able to sample some relevant parameters such as phase synchronization signal and crankshaft position signal and to control, with high degree of flexibility due to the microcontroller firmware, the time and the shape of injection signals and the amount of fuel delivered at each cycle. Finally, the system may work as a standalone application or as a slave element, controlled by a purposely designed software running as a LabVIEW application through a remote personal computer.

Det finns ett behov av att utveckla en sensorlösning som kan bidra JU Solar Team med kördata från körning. Detta för att skapa underlag för mer verklighetstrogna statiska och dynamiska simuleringar av bilen. Arbetet har utförts vid Jönköpings Tekniska Högskola. I studien ingår utförda experiment samt programmering av ett flertal diverse sensorer och kretskort, både individuellt och sammansatt kopplade. Resultatet från arbetet visar att det är möjligt att skapa ett batteridrivet system som kan mäta samt lagra data från accelerometer, gyroskop, luftkvalitetssensor och lastceller oavbrutet under 24 timmar. Systemets kombination av lågt vikt och kompakt storlek gör att det inte stör föraren under tävling och skapar möjlighet att i framtiden bygga in systemet som en permanent del av solbilen. Studien avgränsar sig till att utvärdera möjligheten för att skapa ett konceptsystem som är tänkt att lägga grunden för vidareutveckling av framtida studenter.

Fruit-frost during spring is one of the main causes of damage to the harvest of fruit in orchards. Various systems using different methods of preventing spring-frost are available on the market. To determine when these systems should be activated, the temperature in the orchard needs to be determined. In this project, a self-sustaining autonomous temperature sensor network is designed, which is capable of making a 3D temperature map of the orchard. The system is used to warn farmers when the threat of fruit-frost occurs and to gather data on the spatial variation of the temperature in the orchard. In this thesis, the focus is put on designing the smart measurement and control system. This includes choosing an appropriate control unit and temperature sensors. Also, the software for the control unit is designed, which allows for a smart measurement scheme that balances energy usage and measurement frequency. Finally, an estimation of the energy usage of the subsystem is given based on theoretical analysis., Electrical Engineering

The goal of this project is to develop a fully usable digital multimeter capable of measuring voltage, current, power, resistance, capacity, continuity and frequency. The multimeter should also have autoranging, RMS measurement and computer connectivity. The price of the final product in parts should be below 20 USD.

This project aims to improve the first version of an electrical impedance tomography card. The main enhancement of this version is the replacement of Raspberry Pi with a better platform - STM32, implementation of voltage and phase shift measurements, and error correction in the first version. The main reason for moving from Raspberry Pi to STM32 is speed, power consumption and ease of use for the end user.

This work deals with the design of a laboratory power supply with a modular number of additional modules for individual inputs, outputs or monitoring circuits. Design of individual parts of control circuits, circuits for monitoring of output parameters and their control by the user is solved. Furthermore, the design of the control module, which is in charge of managing the entire source, including the added modules, is solved.

This project aims to improve the first version of an electrical impedance tomography card. The main enhancement of this version is the replacement of Raspberry Pi with a better platform - STM32, implementation of voltage and phase shift measurements, and error correction in the first version. The main reason for moving from Raspberry Pi to STM32 is speed, power consumption and ease of use for the end user.

This work deals with the design of a laboratory power supply with a modular number of additional modules for individual inputs, outputs or monitoring circuits. Design of individual parts of control circuits, circuits for monitoring of output parameters and their control by the user is solved. Furthermore, the design of the control module, which is in charge of managing the entire source, including the added modules, is solved.

The goal of this project is to develop a fully usable digital multimeter capable of measuring voltage, current, power, resistance, capacity, continuity and frequency. The multimeter should also have autoranging, RMS measurement and computer connectivity. The price of the final product in parts should be below 20 USD.

The goal of this project is to develop a fully usable digital multimeter capable of measuring voltage, current, power, resistance, capacity, continuity and frequency. The multimeter should also have autoranging, RMS measurement and computer connectivity. The price of the final product in parts should be below 20 USD.

This project aims to improve the first version of an electrical impedance tomography card. The main enhancement of this version is the replacement of Raspberry Pi with a better platform - STM32, implementation of voltage and phase shift measurements, and error correction in the first version. The main reason for moving from Raspberry Pi to STM32 is speed, power consumption and ease of use for the end user.

This work deals with the design of a laboratory power supply with a modular number of additional modules for individual inputs, outputs or monitoring circuits. Design of individual parts of control circuits, circuits for monitoring of output parameters and their control by the user is solved. Furthermore, the design of the control module, which is in charge of managing the entire source, including the added modules, is solved.

Det finns ett behov av att utveckla en sensorlösning som kan bidra JU Solar Team med kördata från körning. Detta för att skapa underlag för mer verklighetstrogna statiska och dynamiska simuleringar av bilen. Arbetet har utförts vid Jönköpings Tekniska Högskola. I studien ingår utförda experiment samt programmering av ett flertal diverse sensorer och kretskort, både individuellt och sammansatt kopplade. Resultatet från arbetet visar att det är möjligt att skapa ett batteridrivet system som kan mäta samt lagra data från accelerometer, gyroskop, luftkvalitetssensor och lastceller oavbrutet under 24 timmar. Systemets kombination av lågt vikt och kompakt storlek gör att det inte stör föraren under tävling och skapar möjlighet att i framtiden bygga in systemet som en permanent del av solbilen. Studien avgränsar sig till att utvärdera möjligheten för att skapa ett konceptsystem som är tänkt att lägga grunden för vidareutveckling av framtida studenter.

This project aims to improve the first version of an electrical impedance tomography card. The main enhancement of this version is the replacement of Raspberry Pi with a better platform - STM32, implementation of voltage and phase shift measurements, and error correction in the first version. The main reason for moving from Raspberry Pi to STM32 is speed, power consumption and ease of use for the end user.

The goal of this project is to develop a fully usable digital multimeter capable of measuring voltage, current, power, resistance, capacity, continuity and frequency. The multimeter should also have autoranging, RMS measurement and computer connectivity. The price of the final product in parts should be below 20 USD.