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Design of a device for measuring the center of gravity height of road vehicles
Hanych, Jaroslav ; Blaťák, Ondřej (referee) ; Vančura, Jan (advisor)
This master's thesis deals with problems connected with measuring vehicle centre of gravity height. The research part summarizes generally known methods of measuring vehicle centre of gravity and moments of inertia. Essential part of this thesis is the design of a device for measuring the centre of gravity height of a road vehicle on a principle of measuring a period of oscillation. The height position of the platform of the device is adjustable through hydraulic cylinders. A stress-strain analysis of the design was executed through a combination of analytical methods and a finite element method. The process of measurement was described and an equation for determination of centre of gravity height was deduced. Error of measurement was estimated based on the knowledge of partial errors of measured values.
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Design of corrugation measuring device
Valena, Martin ; Omasta, Milan (referee) ; Galas, Radovan (advisor)
This bachelor thesis describes the development of experimental corrugation measuring device. In the first part, mechanisms of corrugation formation and classification of corrugation, together with an analysis of measuring devices are described. According to the analysis, several design configurations were developed. The final variant is described in detail, together with the calculations. The output of this bachelor thesis includes complete technical drawings and price estimation.
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Measurement of parameters of the aircraft hydraulic systems
Bareš, Josef ; Třetina, Karel (referee) ; Bencalík, Karol (advisor)
This thesis summarizes current knowledge of the parameters of hydraulic systems of aircraft. Attention is paid in particular to the continuity of information and the introduction of the reader to the parameters of hydraulic systems issue and the procedures for their measurement. In the introduction the thesis deals with the properties of hydraulic fluids and their influence on the operation of hydraulic systems. Subsequently methods and instruments that are used for laboratory measurement of the parameters of hydraulic fluid are described. Furthermore, the thesis moves on to the topic of hydraulic systems for aircraft, individual hydraulic devices and fluids that are used in the air and for general operation of hydraulic systems. At the end of the thesis a balance sheet is prepared over the selection of suitable laboratory equipment for the measurement of hydraulic fluid parameters.
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Measurement setup for DC, AC and transient testing of two-ports
Káňa, Vojtěch ; Hruboš, Zdeněk (referee) ; Šotner, Roman (advisor)
This master´s thesis describes about automated measurements of two – ports of frequency, time and DC area. Gradually, there is elaborated several theoretical foundations dealing with this issue. For example, different types of buses, available programs and general theory of two – ports circuits. Also a method for solving and implementing a measuring device for communication between apparatuses and DUT is designed and described. In conclusion, the results and evaluation of measurement are processed.
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Power LED Current Analyzer
Ryba, Ivan ; Vochyán,, Josef (referee) ; Šebesta, Jiří (advisor)
This thesis describes attributes of LED, especially high power LED. Evaluates posibilities of measuring the current passing through the high power LED device in the automotive industry. The basic requirement for the analyzer is adjusting it for the voltage and current through LEDs. Analyzer have to display the mean current and frequency. Additionally also minimum and maximum current, duty cycle and amplitude might me displayed. The central element of the device is ATmega16 microcontroller.
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Analog IO simulator
Maslák, Petr ; Kaczmarczyk, Václav (referee) ; Bradáč, Zdeněk (advisor)
This bachelor’s thesis deals with measuring device USB 6008. This thesis describes at the beginning properties of measuring device like count of channel, speed, accuraccy. Next chapter concerns with programming environment like MS Visual C++, CVI and LabView. The most suitable programming environment was chosen Labview. The result of this thesis is programm that can read and write analog samples, display signals in Chart, simulate first order dynamic system.
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Measuring device connected over USB
Flek, Tomáš ; Strašil, Ivo (referee) ; Krajsa, Ondřej (advisor)
In essence, this master’s thesis focuses on search and project on optimal electrical scheme, which will substitute for digital oscilloscope function. The thesis consist of three parts, first part is about problems associated with oscilloscope signal sampling and data bus descriptions, second part where are selected particular circuits, electrical scheme, eventually shown different options which could be used. Third part consists of software function description developed for controlling microprocessor. In choosing of analog devices, are focused on parameters like maximal input voltage on which the device has most ideal parameters, but also parameters, which are critical for particular block, like for example input impedance, device noise, operating amplifier input voltage and current offset. All devices were chosen with battery supply possibility, so what the lowest possible power consumption. In this thesis is theoretically described each circuit block and reasons for their selection.
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Physical measure by the mobile phone
MATYS, Jaroslav
This diploma thesis topic "Physical measure by the mobile phone" deals in theoretical part with term BYOD (Bring Your Own Device) and lesson 1:1, where is solving motivation of integrating devices into the lessons, what are the advantages and disadvatages of this problems and also what are the worries that pedagogues could have. Then thesis deals with equipment of mobile phones, principle of sensors functioning and in the end deals with searches of application for physical measuring by the mobile phones sensors, actual to the date of the writing this thesis. In the practical part thesis deals with comparison of values from aplication to the laboratory equipment. In the end deals with proposals of lessons activities with mobile applications.
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Identify and evaluate the energy balance of small farms.
SEDLÁČEK, Radomír
The work deals with energy consumption in selected agricultural farms and their evaluation and comparison with norms. The theoretical part describes selected farms and production areas in which it is located. The practical part includes a methodological description of the measuring and calculation of the diesel oil consumption. Furthermore, comparison and evaluation of the results of the two farms with the directions.
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