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Precise measurement of semiconductors
Smělík, Martin ; Šebesta, Jiří (referee) ; Dřínovský, Jiří (advisor)
The aim of this bachelor´s thesis was design a laboratory workplace for precise measurement of the stability output parameters of semiconductors. The thermostat is also part of this workplace. The thermostat is maintaining a constant temperature measured semiconductor. The entire laboratory preparation is controlled by a computer via USB. The program is created in control environment Agilent VEE for automatic measurement that semiconductor components.
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Automatic System for Load Characteristics of Power Supplies Measurement
Vojtek, Michal ; Dřínovský, Jiří (referee) ; Šebesta, Jiří (advisor)
The target of this work is create device, which will automatic measure values for find out loading characteristics of power supply with help of built-in electronic load. In case, that source of current supply will for example DC/DC convertor, measurement of input current and input voltage will be possible. Then there is no problem with determinate total efficiency of this power supply. Measuring system will be conected via serial interface of type USB with computer. It will be possible to save found out values with help of control program for nother processing. Control unit of whole system will be suitable microcontroller.
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Wideband Amplifier Final Stage 5kHz - 1,5 GHz
Galajda, Jan ; Šebesta, Jiří (referee) ; Urbanec, Tomáš (advisor)
This work is focused on the problem of design of the wideband amplifier final stage, which is designed as a replacement for the old insufficient amplifier, which works in the frequency band from 5 KHz to 1.5 GHz. First part of the work is dedicated to theoretical introduction of the problem. Second part of the work describes the created matlab scripts for automatic measurement of the amplifiers parameters via SCPI commands. The third part describes choice of the new active element based on the measured parameters of the original amplifier.
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Automated System for Components Scanning
Hřib, Jan ; Boštík, Ondřej (referee) ; Jirgl, Miroslav (advisor)
The aim of this thesis is to design an automated scanning system for components for the purpose of inspecting their dimensions and tolerances. The theoretical introduction provides the reader with basic information on the topic of 3D scanning. The work also includes the design of own scanning system. The greatest attention is paid to the design of a program using the PCL library. The aim of the program is automatic processing of data from a 3D scanner and evaluation of the required dimensions of the scanned component. The final part of the work is devoted to testing the proposed solution.
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Virtual commissioning of the one purpose measuring machine
Mour, Jiří ; Bražina, Jakub (referee) ; Štěpánek, Vojtěch (advisor)
This diploma thesis deals with the virtual commissioning of a single-purpose measuring station for measuring square-shaped plate components by a comparative method of measurement. The theoretical part deals with current methods of automatic measurement in industry and an overview of sensors for measuring length dimensions. The practical part describes the modification of the 3D model of the measuring station in the software NX Mechatronics Concept Designer and the structure of the PLC program in the software TIA Portal, including the mathematical procedure for processing measured data from the sensors. The visualization of the HMI control panel with screens for various modes of the measuring station was also processed.
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Analog-digital module for electrical impedance tomography
Zimniok, David ; Hejtmánek, Tomáš (referee) ; Mikulka, Jan (advisor)
Tato bakalářská práce se zabývá elektrickou impedanční tomografií a jejími problémy. Prvním problémem je měření napětí v širokém rozsahu od milivoltů po desítky voltů. Druhým problémem je měření fáze impedance pomocí mikroprocesoru bez lidské pomoci. Také bylo třeba vyřešit problém s návrhem elektrod a s přenosem malého napětí na velké vzdálenosti mezi měřeným objektem a navrženým zařízením pro zpracování signálů. Ke zpracování signálů a komunikaci byl zvolen mikroprocesor ARM doplněný o zesilovač, který má nastavitelné zesílení a také lineární optočlen pro ochranu mikroprocesoru. Pro zajištění přenosu měřeného napětí na velké vzdálenosti bez ztráty dat je navržena aktivní sonda. Data jsou přenášena prostřednictvím proudové smyčky.
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Virtual commissioning of the one purpose measuring machine
Mour, Jiří ; Bražina, Jakub (referee) ; Štěpánek, Vojtěch (advisor)
This diploma thesis deals with the virtual commissioning of a single-purpose measuring station for measuring square-shaped plate components by a comparative method of measurement. The theoretical part deals with current methods of automatic measurement in industry and an overview of sensors for measuring length dimensions. The practical part describes the modification of the 3D model of the measuring station in the software NX Mechatronics Concept Designer and the structure of the PLC program in the software TIA Portal, including the mathematical procedure for processing measured data from the sensors. The visualization of the HMI control panel with screens for various modes of the measuring station was also processed.
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Automated System for Components Scanning
Hřib, Jan ; Boštík, Ondřej (referee) ; Jirgl, Miroslav (advisor)
The aim of this thesis is to design an automated scanning system for components for the purpose of inspecting their dimensions and tolerances. The theoretical introduction provides the reader with basic information on the topic of 3D scanning. The work also includes the design of own scanning system. The greatest attention is paid to the design of a program using the PCL library. The aim of the program is automatic processing of data from a 3D scanner and evaluation of the required dimensions of the scanned component. The final part of the work is devoted to testing the proposed solution.
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