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Techniques for parallel computing
Vodák, René ; Hasmanda, Martin (referee) ; Lattenberg, Ivo (advisor)
The text of this thesis deals with techniques of parallel processing calculations. It is an analysis of the most important libraries for parallelization including libraries for parallelization on GPU graphics cards and computing speed by comparing these libraries in Visual Studio 2010 based on a simple application searching primes on three different computer hardware configurations. With OpenCL library, that achieved the best result, there are formed two applications – an improved program for searching prime numbers using the sieve of Eratosthenes and a program for calculating the integral with the trapezoidal rule.
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Frequency filters using current active elements
Homola, Radek ; Lattenberg, Ivo (referee) ; Koton, Jaroslav (advisor)
This master´s thesis is about MO-CF, DCCA and CC frequency filters with current active elements proposal. Current active elements, their features, structure and utilization are shown in introduction. A progress propose of universal filter is described in thesis. With the use of active elements has been established an universal filter with basic parameter changes capability (quality and limit frequency). SNAP software was used in this propose and the characteristics simulation have been done in OrCad-PSpice. For control changes of quality and limit frequency was used active element DCCA. The main circuit board of universal controlled filter was made with the EAGLE software. Created sample was measured for each type of filter, the different quality and limit frequency. These values were compared with simulated values of the filter.
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Migration of telemetric narrowband radio networks to the IP standard
Stupka, Richard ; Lattenberg, Ivo (referee) ; Maršálek, Roman (advisor)
This bachelor’s thesis deals with the innovation of narrowband telemetry radio networks to the IP standard. This involves the modernization of old radio data networks that do not use the IP standard or are nearing the end of their life cycle. Renovation has a great benefit in terms of performance, reliability, and security. This modernization is achieved through migration, which means upgrading the old technologies to new ones. The objective of this thesis was to develop theoretical analysis and a technical procedure for network migration. It was deals with the currently used technologies and utilized components, parameters of individual network nodes, the actual design of the migration technical solution and network preparation. After the analysis and technical solution for migration had been performed, the proposed migration solution through simulated operation in a laboratory environment was verified. Based on the obtained information, configuration files for real-world usage were created, radio signal coverage in the field was verified and the communication capability in the newly built RipEx2 network was tested.
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Smart plug with consumption measurement
Hudák, Filip ; Mišurec, Jiří (referee) ; Lattenberg, Ivo (advisor)
The master thesis is devoted to the design with the following implementation and realisation of the smart socket. The theoretical part discusses already existing solutions on~the market and familiarizes with the methods of measuring the power of electricity, which are used later in the thesis. The next part of the design of the smart socket, the thesis deals with it's own design of the smart socket and the analysis of individual components, from the microprocessor, analog-to-digital converter to the individual components that measure voltage and current. The last part of the thesis involves in the realization of~a~schematic design, the production of printed circuit boards where the circuit boards are divided into two parts, the part with alternating current and the part with direct current. Last but not least, there is a program part that includes the main program for the ESP32 microcontroller and an Android application which displays measured and calculated values, with the possibility of controlling the smart socket wirelessly. The final solution to the given problem is a device that measures voltage and current and displays the results to the user via a web application and an Android application. It will mainly be used in places where it is not possible to offer socket management via the cloud.
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Meteorological station system
Čada, Jan ; Balík, Miroslav (referee) ; Lattenberg, Ivo (advisor)
This bachelor thesis deals with the design and implementation of a online meteorological station system, which consists of individual weather stations that communicate via the Internet with the server. The first part of the thesis discusses the principles of measuring major meteorological variables and deals with the selection of suitable sensors for measuring temperature, atmospheric pressure, humidity, wind speed and rainfall. In the practical part, one of the weather stations based on Raspberry Pi Zero microcomputer is designed and realized. As a complement to the measured data, the station includes a camera that captures the view from the site where the meteostation is installed. 3D printing is used to realize most of the mechanical parts, it has the advantage of speed, accuracy and easy reproducibility. For the measurement of temperature, pressure and humidity, a combined sensor BME280 from Bosch is used, which is placed in a small Stevenson screen. The wind speed is measured by a cup anemometer whose rotation is sensed by an integrated Hall sensor. The output pulses are then counted using the PCF8583 circuit, which has an I2C interface for reading the values with a Raspberry Pi microcomputer. Special attention is paid to the construction of a custom calibratable tipping bucket rain gauge with a resolution of 0,5 mm, whose mechanical motion is also sensed by a Hall sensor as in the anemometer. The reading of the data from sensors and sending it to the server is handled by a Python script. For storing and presenting data to users, a custom server solution based on LAMP webserver is implemented, its source codes are written in PHP, HTML, JavaScript and CSS. In addition to the web interface, which displays the data in graphs, the measured data can be also presented to the user via an application for mobile devices based on Android. The application was developed in C# using the Xamarin framework in the Microsoft Visual Studio development environment. Among other things, it implements a widget for quick access to the measured values directly from the home screen. In the final part of the thesis, interesting findings obtained by observing the measured values are mentioned.
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USB cable tester
Fašanga, Jozef ; Hanák, Pavel (referee) ; Lattenberg, Ivo (advisor)
Measuring low resistances is a problem that also occurs with USB cables. The basic feature influencing the functionality is the voltage drop. The work deals with the theoretical possibilities of measuring low resistances and subsequent realization of connections. The ATmega32U4 microcontroller is used to control the device, which provides a USB interface for programming. Work theoretically discusses individual communications used for OLED display and ADC. Subsequently, the work discusses the design of the box for the device and the basics of the program, which is uploaded to the microcontroller.
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Temperature regulator with ESP8266
Vymazal, Tomáš ; Hanák, Pavel (referee) ; Lattenberg, Ivo (advisor)
The bachelor thesis mainly focuses on a development of a smart socket thermostat able to communicate with a user and other applications via Wi-Fi interface in the 2.4 GHz band. Subsequent centers of attention are electrical temperature measurement and analysis of IoT clouds, currently used for logging and visualization of gauged data. Essential part of the work is the detailed depiction of PCBs development from their design to the particular stages of progress. The last but not least are the firmware measures and the regulation functionality verification.
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Distance meter with ESP32
Havelka, Jan ; Hanák, Pavel (referee) ; Lattenberg, Ivo (advisor)
The aim of this thesis was to implement a distance meter with two sensors (ultrasonic and laser) with an ESP32 microcontroller. Then the ability to display measured values on the display and via the web interface. The first part deals with the theory of ultrasound and laser, their use as distance meters and a summary of advantages and disadvantages. The following chapter describes the design of the distance meter with all the components that will be used. The third chapter focuses on the implementation of the distance meter. It was created wiring diagram and designed printed circuit board that handled all mutual communication between the ESP32 and other peripherals. The whole device is placed in a box in the shape of a pistol printed on a 3D printer. The next part of the work briefly describes the software of the distance meter written in the C programming language in the development environment Arduino IDE. Finally, images of the final product were inserted into the work and test measurements were performed, the result of them is written into tables, graphs and subsequently evaluated.
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