|
|
Datalogger or building constructions
Hendl, Adam ; Streit, Jakub (referee) ; Bradáč, Zdeněk (advisor)
The bachelor thesis deals with automated measurement of temperature, humidity and pressure in building structures. In the section dedicated to my work is primarily a process as I progressed in implementing the task. The next section describes the parameters of the components used to implement the measurement and data storage. This work also includes a design of a printed circuit board that includes auxiliary and measuring circuits.
|
|
|
Colorimeter for Medical Applications with NFC Connections
Šobich, Adam ; Čížek, Martin (referee) ; Sekora, Jiří (advisor)
This Master’s thesis deals with assembling of a colorimeter using NFC technology. The theoretical part introduces the principles of colorimetric measurement, calibration curve, and important physical quantities. Further, the principle of NFC technology, its architecture, and division of NFC devices are described. The goal of the practical part is to propose a structural design and software solution of a colorimeter. Particular emphasis is placed on the selection of the RGB sensor that is being tested and its results are being analyzed. The construction of electrical circuit and microprocessor control are being solved. The manuscript deals with the implementation of an application for the Android operating system, which serves as the user interface of the colorimeter. Obtaining data from the sensor and storing it in a memory of the NFC tag is provided by the Arduino platform. Issues that were encountered during the work are analyzed in the discussion.
|
|
|
Development of the testing device for length measurement
Kirchner, Jan ; Vetiška, Jan (referee) ; Andrš, Ondřej (advisor)
Aim of this thesis is a verification of possibility to measure displacement in small range using sensor based on the principle of strain gauge. For testing purspose, an evaluating unit was designed, made and assembled. This unit contains analog/digital converter, LCD and it has an abbility to move measuring plane using stepper motor. Next part of this thesis is about testing new prototype of strain gauge sensor, including evaluation of results of measuring. The performed measurements were measuring linearity, time stability and repeatability. Based on the results of the measurements, the possibility of using this type of length measuring device was confirmed for further development.
|
|
|
Control of Linear Motor based on Ultrasonic Detection
Veselá, Klára ; Kolářová, Jana (referee) ; Sekora, Jiří (advisor)
The focus of this bachelor thesis is to do research on possibilities of contactless distancemeasurement and linear stage construction. The first part describes four types of enginespossible to use in linear stages, their principles, advantages and disadvantages. Nextpart is focused on possibilities of contactless distance measurement. Based on thedescriptions, the most suitable modules are selected for the design of the system. Thissystem will maintain a constant distance from the object by using contactless distancesensor and linear motors.
|
|
|
Monitoring box for germination and plant growth
BLAŽEK, Josef
This bachelor's thesis is mainly focused on data transfer between microcontrollers and the internet domain. As an example we have chosen a construction of a smart flowerpot that is based on the communication and data transfer between these two parts. The project is successfully completed and tested.
|
|
|
Optimization design of a mass flow meter for milking
STEHLÍK, Radim
The topic of diploma thesis is the optimization of a mass flow meter for milking. It is a reworking of an already proposed concept that showed major shortcomings in many aspects during the operational testing. The concept for the new proposal was created by using the program SolidWorks. The concept was produced through 3D printer. For the production was due to its properties chosen PET-G copolyester in the form of a printing string. Furthermore, it was proposed to acquire data using a minicomputer Arduino UNO Rev3. The subsequent concept was tested for its functionality. The suggestion of data transmission and its processing using computer technology is also included in this thesis.
|
|
|
Automatic detection of tool fracture in metal sheet punching
Kluz, Jan ; Rajchl, Matej (referee) ; Brablc, Martin (advisor)
This Bachelor thesis deals with the design and subsequent implementation of the realtime fault detection system during the sheet metal punching process with a tool of small dimensions (0.5 × 12 mm). The proposed system is important for significant ease of the operator's work, acceleration of the process of production, as well as saving of the company finance budget. The first part of this thesis deals with the theoretical background of the studied issue. The following part is a brief theoretical introduction to the field of digital signal processing. The next chapter presents methods developed for fault signals detection including speed enhancing and data flow reducing algorithms. The main examined methods were: frequency peaks, frequency bands, autocorrelation, frequency correlation methods and machine learning including deep machine learning. Deep machine learning of the neural network achieved the best results overall. Features from time and frequency domain were used for purposes of creating the classification model using machine learning. The possibility of developing the predictive maintenance system is also described, including research of this area in a modern industry. Subsequently, the achieved results and their evaluation are presented. The end of this thesis is dedicated to the description of the implementation of classification system into realtime form and connecting this system to the punching press computer using Arduino Uno microcontroller and basic signal control electronics. The proposed system has been successfully assembled, tested and put into on-site testing.
|
|
|
Design of linear clock with LED digital scale
Javorský, Dominik ; Krčma, Martin (referee) ; Svoboda, Petr (advisor)
This bachelor thesis deals with the design and production of linear clocks with LED digital scale by 3D printing. The beginning of the work gives an overview of existing structural design and also a brief overview of today's electronic components used in the creation of linear clocks. In the following part, the work deals with the design and production of linear clocks. The output of the work is a functional model that satisfy the requirements of scale with a range of 12 hours and a resolution of 5 minutes. The work also contains drawing documentation of the assembly, selected components and software used to control linear clock.
|
|
|
Design of linear clock controlled by Arduino Uno
Hladík, Ondřej ; Strecker, Zbyněk (referee) ; Svoboda, Petr (advisor)
The bachelor thesis deals with designing and realization of functional sample of linear clock with analog scale using 3D printing. Firstly, the structural arrangement of available devices and the selection of usable electronic components are solved based on the required parameters. After that, the work contains a design solution of printed parts, where the linear motion mechanism is designed as a rack and pinion and the feed of scales is solved using a sliding linear guide. The work includes a wiring diagram of used electronic parts. The Arduino Uno board takes care of the clock control, for which a program was created according to the required properties. In the end, the functionality on the created sample was verified. The work is accompanied by assembly drawings and drawings of the main parts and the complete program.
|
|
|
Control of Linear Motor based on Ultrasonic Detection
Veselá, Klára ; Kolářová, Jana (referee) ; Sekora, Jiří (advisor)
The focus of this bachelor thesis is to do research on possibilities of contactless distancemeasurement and linear stage construction. The first part describes four types of enginespossible to use in linear stages, their principles, advantages and disadvantages. Nextpart is focused on possibilities of contactless distance measurement. Based on thedescriptions, the most suitable modules are selected for the design of the system. Thissystem will maintain a constant distance from the object by using contactless distancesensor and linear motors.
|
guest ::
