This diploma thesis is focused on synthetic loads, especially electronically controlled loads. The thesis analyse principles of mechanically and electronically controlled loads and theirs operation modes. The paper also carried out a search of AC loads available on the market. The parameters of the AC load were based on the requirements provided by client. The functionality of the designed load is verified by simulation. The thesis continues with realization of the designed schematics and bringing the load to function. At the last section of the thesis are detail parameters of the designed load verified by measurement.

This diploma thesis deals with the acquisition and classification of movement using accelerometer and gyroscope data. The theoretical part contains biomechanics of movement, sensors used in the motion analysis and customization options and classification of measured data. A description of the components of the acquisition system, its implementation and placement on the body of the measured person are introduced in this work as well. To verify the functionality of the device, measured data was compared with the data measured by mobile application Sense-it. Classification of motion was inplemented by two methods in the Matlab software environment. The first one uses a vector of three parameters, the other classifies the movement by the absolute value of the difference in signal deflections.

This thesis deals with methods of edema measuring. In my work, I designed hardware and software solutions for a device reconstructing surface of the limb part. Purpose of my work is evaluating a discussing possibilities of this device. For making 3D reconstruction of scene from 2D images I chose reconstruction method Structure from motion. For acquisition of 2D images a device controlled by Arduino platform was constructed, the whole device is realized in program language Matlab. In the end of the thesis is described, how to improve the device for using in real conditions.

abstract: This graduate thesis explains and discusses the background, methods, limitations, and future work of developing a low-budget, variable-length, Arduino-based robotics professional development program (PDP) for middle school or high school classrooms. This graduate thesis builds on prior undergraduate thesis work and conclusions. The main conclusions from the undergraduate thesis work focused on reaching a larger teacher population along with providing a more robust robot design and construction. The end goal of this graduate thesis is to develop a PDP that reaches multiple teachers, involves a more robust robot design, and lasts beyond this developmental year. There have been many similar research studies and PDPs that have been tested and analyzed but do not fit the requirements of this graduate thesis. These programs provide some guidance in the creation of a new PDP. The overall method of the graduate thesis comes in four main phases: 1) setup, 2) pre-PDP phase, 3) PDP phase, and 4) post PDP phase. The setup focused primarily on funding, IRB approval, research, timeline development, and research question creation. The pre-PDP phase focused primarily on the development of new tailored-to-teacher content, a more robust robot design, and recruitment of participants. The PDP phase primarily focused on how the teachers perform and participate in the PDP. Lastly, the post PDP phase involved data analysis along with a resource development plan. The last post-PDP step is to consolidate all of the findings in a clear, concise, and coherent format for future work. / Dissertation/Thesis / Masters Thesis Engineering 2020

Orientador: José Luiz Rybarczyk Filho / Resumo: O cavalo (Equus caballus) sofreu mudanças evolutivas do Eohypus com adaptações na locomoção para andamentos em diferentes velocidades. Em semelhança a outros ungulados a porção distal dos equinos é protegido pelo casco. O casco é estrutura córnea complexa que tem relação direta à saúde destes animais, é a parte protetora estrutural e funcional do sistema locomotor do equino, e tem ação direta sobre o retorno sanguíneo dos membros ao coração. Ao apoiar o casco sobre o solo, o animal pressiona as estruturas podais que promovem a expansão medial e lateral do casco. Considerando tais alterações no formato do casco nos momentos de apoio e elevação durante a locomoção, apresenta-se um sistema físico de precisão que analisa objetivamente a deformação dos cascos durante a locomoção, estabelecendo-se uma avaliação física e matemática das mudanças do formato do casco à locomoção. Foi desenvolvida uma placa de circuito impresso para se encaixar na plataforma embarcada Arduino (shield), esse dispositivo faz o processamento dos sinais adquiridos pelos sensores fixados nos cascos, e os enviam a um computador com uma taxa de amostragem a 200 Hz. Um software escrito na linguagem de programação Python recebe os dados, exibe-os em tempo real e os armazenam em arquivos para análises. Para realizar o teste in vitro foi criado um protótipo de um casco em PVC. Os testes in vivo foram feitos em quatro animais, o quais foram conduzidos em dois tipos diferentes de solo (asfalto e grama). O resultado ... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The horse (Equus caballus) underwent evolutionary changes of Eohypus with adaptati- ons in locomotion for different speeds. In similarity to other angulated distal equine is protected by the hoof. The hoof is a complex cornea structure that is directly related to the health of these animals, it is the structural and functional protective part of the equine locomotor system, and has direct action on the blood return of the limbs to the heart. By supporting the hoof on the ground, the animal presses the foot structures that promote the medial and lateral expansion of the hoof. Considering such changes in the shape of the hoof during moments of support and elevation during locomotion, a physical precision system is presented that objectively analyzes the deformation of the hooves during the locomotion, establishing a physical and mathematical evaluation of the changes of the shape of the hoof to locomotion. A printed circuit board was developed to fit the Arduino embedded platform (shield), this device processes the signals acquired by the sensors attached to the hooves and sends them to a computer with a sampling rate of 200 Hz. Software written in the Python programming language receives the data, displays it in real time, and stores it in files for analysis. For the in vitro test a prototype of a PVC hoof was created. In vivo tests were performed on four animals, which were conducted on two different types of soil (asphalt and grass). The result demonstrated and proved the op... (Complete abstract click electronic access below) / Mestre

The ambition of this project was to create, program and control a matrix of individually controllable LEDs. This was achieved by utilizing a variety of microcomputers, such as Arduino, and by forging the hardware required for signal processing. Several subsystems were constructed, a main unit for controlling the LEDs, a signal processing unit for analyzing audio signals by employing the Fourier transform, and a stage lighting communication unit to communicate with standard stage equipment. All the subsystems were conjoined into one complete system using digital communication. The physical construction of the matrix was not finished but the subsystems work together and are able to control a miniature prototype of the matrix (with the same characteristics as the final build) with high responsiveness and precision.

Dörröppningar till en operationssal under en pågående operation ökar infektionsrisken. På Centraloperation, Karolinska Universitetssjukhuset Solna, öppnas dörrarna till operationssalen fler gånger än nödvändigt. Muntlig information till personalen har inte minskat antalet dörröppningar på lång sikt. En trådlös tekniklösning som räknar och visualiserar antalet dörröppningar tros ha en mer långvarig effekt, därför skulle en prototyp tas fram. En litteraturstudie gjordes för att hitta komponenter och för att med dessa skapa prototypen.   Prototypen kan räkna och visualisera antalet dörröppningar från en dörr. Då en operationssal oftast har tre dörrar är visualiseringen förberedd för att kunna visa antalet för dessa. Prototypen behöver vidareutvecklas för att kunna användas på under en operation. / Door openings to an operating theatre, during an ongoing operation, increases the risk of infection. At the Central operation department, Karolinska University Hospital Solna, the doors open more frequently than necessary. Oral information to the staff has not reduced the number of door openings for a longer time. A wireless solution that counts and visualizes is believed to have a more longlasting effect, therefore a prototype would be created. A literature study was performed in order to find components and with those build the prototype. The prototype is able to count and visualize the number of door openings from one door. However, since many operating theatres have three doors, the visualization is prepared for this. To be able to use this system during an operation the prototype needs to be further developed.

The project was performed in collaboration with the company Prevas AB. The aim of the project was to implement a GPS tracking device, or a GPS tracker, that has a hardware setup retrieving the GPS position of an object and then sends the position through a mobile communication module to a smartphone. A software application running on a smartphone simulator was developed to visualize the position with a Google map widget. The hardware unit consists of a GPS/GSM/GPRS module, a microcontroller, and a smartphone simulator that runs the software application made for iOS, Android and Linux operating systems using Flutter - an UI multi-platform software development kit. Implementation of the setup started with a Telit GM862 GSM/GPRS/3G-GPS module (together with a SmartGM862 development board), an Arduino UNO microcontroller board and a logical level converter. This first setup was not successful because a problem with the serial communication between the Telit GSM-GPS module and the Arduino could not be solved.  The second setup was implemented in which an Arduino GSM/GPRS/GPS shield was used with the Arduino board. The serial communication between the shield and the Arduino was functioning properly and a GPS position could be retrieved. The GPS position is published (sent) using a lightweight messaging protocol - MQTT (messaging queuing telemetry transport) through GPRS functions to the smartphone of the destination user.  To visualize the GPS position in a Google map, an Object Tracker app was implemented on the smartphone simulator app (an iPhone in this project) that subscribes and retrieves the GPS position, and then displays it on the map with a red marker indicating the position.  The GPS tracker with the second setup and the app has been tested and proved to work properly. It has, however, much room for improvement and further development, e.g., making the app more user-friendly, and designing and making a PCB so all the components are mounted on one board. It has been noticed in an initiated test that the GPS antenna placement could affect  positioning accuracy. This, thus, needs to be considered for high accuracy.

Solar energy is a clean energy source which has a minimal impact on the environment than other forms of energy. Solar energy is now widely used in a variety of applications. Although solar energy is widely used, the efficiency of converting solar energy into electricity is insufficient since most solar panels are installed at a fixed angle and the fixed solar panels do not aim directly towards the sun due to the earth’s constant motion. Solar panels are very expensive for families or businesses that consume more energy than usual, as they require several solar panels to generate enough power. The main objective of this project is to build a working model so that to increase the efficiency of power output taken from solar panel by continuously tracking the sun’s rays through out the day and aligns the solar panel orthogonal to the sun. To develop a model that benefits people by producing more solar energy with fewer solar panels. In order to overcome this problem we come up with a solution through Arduino Uno system which consists of four LDR sensors which are responsible for the detection of the light intensity of the sun’s rays. Two micro servo motors are used for movement of the solar panel in azimuth and elevation direction since it is a dual axis tracking system. A solar panel is the core part we use in this model for the conversion of solar energy into electrical energy. The LCD displays shows the power output of the solar panel. The proposed system is a dual axis tracking system that actively tracks solar radiation and adjusts the panel so that the sun’s rays are perpendicular to it, maximizing the solar panel’s power output. The LCD display shows the power output of the solar panel. By this project, we can say that dual axis tracking system we built can track the sun’s rays and increases the power output of solar panel. The manual effort for changing the solar panel according to the sun position can be avoided.

The Intel Galileo, inspired by the well-known Arduino board, is a development board with many possibilities because of its strength. The Galileo is has an Intel processor capable of running GNU/Linux and can be connected to the internet, which opens up the possibility to be controlled remotely. The programming language that comes with the Intel Galileo is the same as for the Arduino development boards, and is therefore very limited and does not utilize the Galileo’s entire strength. Our aim with this project is to integrate a more suitable programming language; a language that can make better use of the relatively powerful processor to control the components of the board. The programming language of choice is Erlang, and the reason is obvious. Erlang can be described as a process-oriented programming language based on the functional programming paradigm and its power in concurrency. The result of the project was the successful integration of a complete version of GNU/Linux on the board and the cross-compilation of Erlang/OTP onto the board. Having Erlang running on the system opens up many possibilities for future work, amongst all: creating Erlang programs for the Intel Galileo, integrating an effective API, and measuring the pros and cons of using Erlang on an Intel Galileo. / Intel Galileo är ett utvecklingskort som bygger på Arduinos succe. Den kommer med en kraftigare processor jämfort med Arduino Uno, och den har möjlighet att kunna köra GNU/Linux. Den har också en port för att kunna kopplas till internet och på så sätt kommunicera med andra enheter. Programmeringsspråket som rekommenderas för Intel Galileo är densamma som används för Arduinos utvecklingskort. Det finns däremot en möjlighet att kunna kombinera utvecklingskortet med ett programmeringsspråk som kan erbjuda mer funktionalitet och fortfarande vara enkelt. Vårt val hamnade på Erlang för den är ett funktionellt språk och har möjlighet att hantera olika processer. Tanken är att kunna behandla olika komponenter kopplade till utvecklingskortet som processer, som kan kommunicera med andra komponenter och med internet. Projektarbetet bestod av att undersöka ifall det är möjligt att kunna kombinera Erlang/OTP med Intel Galileon samt skriva en guide för hur implementeringen gick till. Att kombinera de två var lyckat och det öppnar upp möjligheter för fortsätta arbeten och försök.