|
|
Software based optical cable documentation
Martínek, Michal ; Křepelka, Václav (referee) ; Filka, Miloslav (advisor)
The focus of this work is a description of search-optic cables and cables stored in the Earth's surface suitable method and the possibility of registration of the optical paths and components in the ArcGIS geographic information system. The work set out in detail the different types of optical fibers and principles listed in the wiring examples most commonly used cables. There are additional elements used in the construction of optical networks, whether the individual connectors, hubs, etc., as well as protection features most often used for distribution of optical cables. There are also examples given options stowages routes and laying cables, and most currently with the possibility to discover a practical listing and description of these search engines non-metallic elements. The work also focuses on how these elements efficiently record to go to them quickly and easily access and simplify their close location in real space, to ensure unwanted destructive interruption, or any repair, expansion, etc.
|
|
|
Sensorless position control of solenoid valve
Keprt, Jaroslav ; Janák, Luděk (referee) ; Houška, Pavel (advisor)
This thesis deals with the determination of the position of the solenoid core in real time based on the measured current. The reference position of the current is used for feedback control of the solenoid. For this issue, software tool Matlab/Simulink was used. For current and temperature measurements, PCB circuits were created. The whole project was carried out on the dSPACE platform.
|
|
|
GPS based Localization using the Java ME application
Figurny, Radek ; Morávek, Patrik (referee) ; Růčka, Lukáš (advisor)
The task of the Master's thesis has been to develop the MIDlet, which is able to receive data from an external GPS module via Bluetooth. Data are received in the NMEA 0183 format and are processed to extract longitude, latitude, elevation, velocity, number of visible satellites and measurement accuracy of longitude, latitude and elevation. Users have a possibility to save their actual location with a short description to the cell phone’s memory. The MIDlet is also able to save a user defined way-point and navigate to this way-point. The MIDlet itself was developed in the Netbeans IDE with a software development kit (SDK) made by Nokia company. This kit is designed for the Symbian OS s60 3rd edition FP1, which contains a s60 emulator and a s60 MIDlet for a direct compilation in the cell phone. The MIDlet is made of three main parts. The first part shows a longitude, latitude, elevation, velocity, longitude and latitude measurement accuracy, date and time. The second one shows a direction of north, latitude and longitude. The last one shows a direction to the selected way-point and a distance to this location. In theoretic part of the thesis there are described the GPS navigation system, Bluetooth system, geodetic system WGS 84 and programing language Java and its part Java ME.
|
|
|
LPR Recognition
Trkal, Ondřej ; Richter, Miloslav (referee) ; Horák, Karel (advisor)
The thesis deals with analysis and design of system for automatic localization and recognition of the license plate. The input images are from different sources, and contain large scenic and weather variations. The aim was to create a system able to find the licence plate on the image and recognize its alphanumeric figure. In this work, there is a focus on analysis and implementation of localization and optical character recognition methods. One own and four other localization methods are compared. There are also compared three classifiers for optical character recognition. Localization and OCR methods are tested on real data and evaluated in accordance with the calculated evaluation parameters. The work also contains sensitivity analysis of the proposed system.
|
|
|
Angle of arrival calculation methods for localization using UWB technology
Žaludek, Ivo ; Klusáček, Stanislav (referee) ; Havránek, Zdeněk (advisor)
The thesis describes UWB technology, compares available hardware platforms and describes UWB localization methods. The practical part compares the methods of calculating the angle of arrival from the phase difference of signal arrival on the two-element antenna array. The calculation is performed using the analytically obtained arc sine function and also using the look-up table and the polynomial function. The content of the look-up table and the coefficients of the polynomial function are based on the measured characteristics of the UWB receiver (anchor). The best result was obtained using the look-up table. More accurate results were obtained when the phase difference of arrival values were averaged.
|
|
|
Research into GPS system used for Wireless Sensor Node Localization
Juračka, Jan ; Číž, Radim (referee) ; Šimek, Milan (advisor)
Theme of the thesis is research and possibility of using GPS system from localization in wireless sensor network. Paper deals with the accuracy and energy consumption of GPS localization. Thesis also solve using of localization in local anchor system. Theoretical part describes IEEE 802.15.4 standard, capability of used nodes and describe ways how to use RSSI value to resolve location
|
|
|
Research of Localization Algorithms in Wireless Sensor Networks
Holešinský, Pavel ; Morávek, Patrik (referee) ; Šimek, Milan (advisor)
This diploma thesis is focused on research of localization algorithms. Each developed localization algorithms are generally application specific. Because of application requirements diversity, many variants of localization algorithms exist. In case of finding appropriate localization algorithm for concrete application usability, existence of real condition simulation environment is useful. Development of this simulation environment was made simultaneously with both localization algorithms. At first, survey of available localization technic was performed and their summary was listed. Further work was aimed on research of two localization algorithms. Both of them use triangulation mechanism to determine unknown node position. This mechanism is based on measurement of distance to three reference points with known position. It would seem that both algorithms are similar, but simulation shows their difference and presents their suitability for diverse conditions.
|
|
|
Button Search in Forms
Dyk, Tomáš ; Šolony, Marek (referee) ; Zemčík, Pavel (advisor)
Diploma thesis describes a system for automatic detection of buttons from a screen photo.The system is used together with a robotic arm and a camera to detect buttons on the screens of embedded devices. After detecting buttons on the screen, the algorithm commands the robotic arm to click on the position of the detected button. The algorithm creates a navigation map in which all screens of the device are visible by systematically clicking through all buttons on all screens. For each screen, the positions of the detected buttons and the destination to which the screen points are stored.
|
|
|
Comparison of methods for indoor localization
Povolný, Ondřej ; Rozum, Stanislav (referee) ; Frýza, Tomáš (advisor)
The bachelor thesis is in theoretical part focused on the ideas of the localization of people or objects, using the IoT technologies, namely ZigBee and Lora™. The possible methods of localization are mentioned, with the mention of parameters of the used technologies and the overview of existing modules that are obtainable on the market. The result of a practical part is design of PCBs, the basic testing of hardware and software and the analysis of the obtained data.
|
|
|
Location Estimation of Objects in WiFi Communication Network
Kohoutek, Jan ; Strnadel, Josef (referee) ; Šimek, Václav (advisor)
The purpose of the thesis is to design and physically implement a system for location of devices in a Wi-Fi based networks deployed in the interior of small and medium-sized enterprises. First of all, the attention is given to the survey of commonly available technologies suitable for determination of the object position. Then, based on these findings, architecture of a location system comprising an array of sensor nodes and central processing unit is proposed. In conclusion, the results are presented and the fulfillment of the requirements is evaluated.
|
guest ::
