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Calibration and linearization of an RTD sensor
Hucl, Václav ; Šedivá, Soňa (referee) ; Beneš, Petr (advisor)
First part of this work is focused on the description exist method of analogue and digital calibration and linearization static parameters resistance sensors. Second part deal with concrete problem linearization thermistor NTC by multivibrator compound of two transistors same polarity and multivibrator, where active element is operational amplifier. Last part of bachelor work is devoted digital linearization based on curve fitting and linearization based on piecewise-linear interpolation, their using with thermistor NTC and comparison their attributes.
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Uncertainty of Indirect Measurement Determined by Monte Carlo Method
Novotný, Marek ; Havlíková, Marie (referee) ; Šedivá, Soňa (advisor)
This bachelor's thesis deals with determination of uncertainty in measurement, primarily with regard to the indirect measurement. There is theoretically analyzed and practically implemented calculate the uncertainty coefficient ent - speed multiple hole probe Annubar 485 in two ways. The first way is to calculate the uncertainty of the classical met-hod and the second one is the uncertainty using the Monte Carlo.
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Measurement of very small displacements with fiber-optic interferometer
Vybíral, Dominik ; Šedivá, Soňa (referee) ; Havránek, Zdeněk (advisor)
This master's thesis is focused on optical methods of measurement of very small dynamic displacements. Principles of interfermeters with picometer resolution including Fabry-Pérot interferometer are discussed and an integration using this interferometer was designed. Parasitic influencers of Fabry-Pérot interferometer were described as well as signal processing methods for interferometer's output signal. An interferometric meter for measurement of dynamic displacement was designed with frequency range of several kHz. These parameters are achieved under condition of photonic crystal layer placed on measured sample.
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Measurement system of Ripple Control (RC) signals
Čurda, Pavel ; Havránek, Zdeněk (referee) ; Šedivá, Soňa (advisor)
The thesis deals with the introduction of the measuring instrument SVA - M on the market for compliance with electromagnetic compatibility and electrical safety requirements. Furthermore it deals with determination of measuring accuracy instrument SVA - M and measurement uncertainties. For the determination of accuracy there is a theoretical analysis and subsequent practical measurements.
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Monitoring of operating data of handling equipment
Fikar, Vratislav ; Vobejda, Lukáš (referee) ; Šedivá, Soňa (advisor)
Master’s thesis deals with the design of monitoring of handling equipment. Measured quantities are the switched-on state of the forklift, the time of active use, monitoring of transported material, and the total traveled distance. For each quantity, several possible sensing methods are outlined followed by a summary of the pros and cons of each method, which served as the basis for selecting the most suitable sensor for sensing the required information. The theoretical part of the thesis outlines the proposals in terms of both theoretical aspects as well as the implementation of the sensors along with proposals for possible mounting on a forklift. The proposed application was built on top of the Workmonitor RKC2.0 development kit, which was first developed for injection molding machine monitoring equipment. The proposed solution further expands the Workmonitor RKC2.0 software with additional features, such as forklift data collection, data processing, and streaming of collected data via WiFi to a local server. The final part then describes the mounting of sensors in the forklift, the final software changes, and the presentation of the collected data.
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Automated oscilloscope calibration
Krejz, Jan ; Bartoň, Jan (referee) ; Šedivá, Soňa (advisor)
The Bachelor thesis deals with the preparation and subsequent automated calibration of the Rhode&Schwarz RTB2002 oscilloscope using the Meatest 9010 calibrator. The first part brings a theoretical introduction to the environment of Caliber and the issue of calibration of oscilloscopes. The second part contains the preparation and design of the calibration procedure including its practical implementation and comparison of the results of the automated and manual calibration of the chosen oscilloscope.
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Flow measurement of air by multiport averaging probes
Šimák, Jakub ; Uher, Miroslav (referee) ; Šedivá, Soňa (advisor)
Master work deals with the measurement of fluid flow (particularly air) pipe, with orifice and multiport averaging probe. The theoretical part is followed by practical, which verifies the properties of the measured system. In a next part of semestral work are verifies the properties of multiport averaging probes Vavra s.r.o. MQS-011 and Rosemount Annubar 485. Measured values from probes are compared.
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Simulation and determination of permanent pressure loss for the normalized orifice plate
Šimberský, Michal ; Uher, Miroslav (referee) ; Šedivá, Soňa (advisor)
This master’s thesis deals with the simulation of flow through the normalized orifice plate. There is described flow measurement with flowmeters, which reduces the cross-section of the pipe and causes the pressure difference before and after the flowmeter. Following is a description methods of modeling of turbulent flow and a description of software for the simulation of flow from the company Ansys. The theoretical part is followed a practical part, which is focused on determining the permanent pressure loss caused by the orifice plate and the verification of straight pipeline lengths between orifice and obstacle.
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Measurement uncertainties in calibration of vibration sensors
Pražák, Jiří ; Uher, Miroslav (referee) ; Šedivá, Soňa (advisor)
This thesis deals with the research of uncertainties of the vibration sensor calibration measurement. The analysis of individual calibration methods of vibration sensors is also carried out in this thesis. Next, measurement of uncertainties for secondary calibration of the vibration sensors are analysed. The experimental part of this work is focused on determining the influence of different elements to type A uncertainty of vibration sensors uncertainty calculation. Experimental measurement was performed in an accredited laboratory for measurement and calibration of vibration sensors at FEEC BUT. Calculation of uncertainties of secondary calibration is also carried out in this thesis.
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