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Shock severity comparison using Shock Response Spectrum and Pseudo-Velocity Shock Spectrum in LabVIEW
Štěrba, Radek ; Pikula, Stanislav
This article deals with the comparison of Shock Response Spectrum (SRS) and Pseudo Velocity Shock Spectrum (PVSS). Publicly available data as well as values from an implemented experiment are used. The experiment consisted of acquisition of accelerations when a model car hit various braking pads. The data was recorded and evaluated in LabVIEW and for this purpose the PVSS needed to be implemented in same programing environment. The results show that the impact severity rating can be seen from SRS as well from PVSS, but on the 4CP paper the results are much easier to spot.
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Laboratory exercise using Vernier systems
Kubová, Dominika ; Mézl, Martin (referee) ; Králík, Martin (advisor)
The aim of this thesis is to design a measurement procedure in the LabVIEW development environment for three laboratory exercises using an ECG sensor, a blood pressure sensor and a spirometer from Vernier. In the theoretical part, the physiological introduction, the problems of the given devices and measurement methods are described. The practical part focuses on the development and verification of the proposed measurement protocols, which are attached as appendices to the thesis. It also includes support files for the exercises, including scripts for basic data acquisition and calibration. These materials are intended to serve as teaching tools enabling effective training and understanding of measurement methods in medical diagnostics.
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Program for analysis and comparison of shocks
Štěrba, Radek ; Beneš, Petr (referee) ; Pikula, Stanislav (advisor)
This bachelor thesis focuses on the analysis of shocks using the Shock Response Spectrum (SRS) and Pseudo Velocity Shock Spectrum (PVSS) methods. The first part of the thesis describes the theory of both methods including the assessment of shock severity and compares their availability in programming environments. The aim of this thesis is to design and implement a program in LabVIEW to evaluate shock data using these methods. The program in LabVIEW allows the use of Matlab or Python to calculate and plot SRS and PVSS. Based on the plotted graphs, the severity of the impacts is assessed. In the practical part, an experiment is performed with the impacts of a model car on different brake pads. The results of the severity of the available impact data such as earthquake or punching bag as well as the data obtained from the experiment are summarized in the last section.
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Wireless dalalogger
Linek, Tomáš ; Burian, František (referee) ; Kunz, Jan (advisor)
The bachelor thesis focuses on the design and implementation of a wireless datalogger. It includes a detailed description of the issues related to wireless transmission using LoRa technology, which was utilized in the implementation. Furthermore, the design of the entire device, consisting of a central logging unit and sensor units, is described. The thesis also covers the hardware and software equipment of the wireless datalogger, including a user desktop application. The outcome of the work is the construction of a functional datalogger enabling the logging of temperature and humidity from wireless sensor modules and measurement of its parameters.
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Analysis of methods for impact sensing in structures with piezoelectric elements
Široký, Václav ; Hadraba, Petr (referee) ; Hadaš, Zdeněk (advisor)
This thesis deals with the design and implementation of impact monitoring in structures with piezoelectric elements. In the theoretical part are presented methods of structure health monitoring with emphasis on impact monitoring and its use in aerospace applications. Furthermore, the concept of creating a cyber-physical system using metamaterial structures with implemented piezoelectric elements is presented. In the practical part are used several experimental platforms, for which is built a data acquisition system from NI company. The processing of the measured data is carried out in the LabVIEW development environment. In it, force response models are created, which are used to evaluate the position and strength of the impact in real time in a stand-alone application.
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Design and developement of control unit for material testing machine
Kališ, Miroslav ; Appel, Martin (referee) ; Krejčí, Petr (advisor)
This bachelor's thesis is focused on the creation of the software and hardware part of a small benchtop mechanical testing machine available at UMTMB and will serve as a mechanical testing demonstrator enabling material tensile testing. The goal is to create a control program in the LabVIEW environment that communicates with control and measurement components. Another goal is to verify and test the functionality of the proposed solution on real test specimens.
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A comparison of the functions of data acquisition programs for cDAQ
Zoubek, Vojtěch ; Krejčí, Petr (referee) ; Pokorný, Jan (advisor)
This bachelor's thesis deals with the measurement of physical phenomena using the CompactDAQ systems. The recherche part of the thesis shows the possibilities of the CompactDAQ and describes the communication of LabVIEW and MATLAB with the CompactDAQ hardware. The next section presents a LabVIEW VI application that measures the temperature, revolutions and vibration of a high-speed motor. In the last part is a comparison of LabVIEW and MATLAB environment.
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Methods for instantaneous speed estimation in ultrasonic object detection
Šilar, Adam ; Pikula, Stanislav (referee) ; Havránek, Zdeněk (advisor)
The main goal of this master thesis is to explore suitable methods for estimating the instantaneous velocity of a moving object. The estimation of instantaneous velocity is based on the knowledge of the Doppler effect, which causes a shift in the frequency of ultrasound to another frequency depending on the velocity. Using the knowledge of the Doppler effect, a procedure is described for designing and programming a generator of simulated ultrasound data in the LabVIEW environment. The thesis theoretically describes methods for estimating instantaneous velocity, and selected methods are applied to test data to obtain information about the object's instantaneous velocity. The selected methods are tested for various parameters and compared with each other. The methods were subsequently practically tested on real measured data and compared with their simulated versions.
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Condition monitoring technique for smart diagnostics
Dostálek, Jakub ; Čala, Martin (referee) ; Pikula, Stanislav (advisor)
This thesis deals with the use of the Teager-Kaiser energy operator (TKEO) for state monitoring and testing its use for determining the instantaneous frequency and amplitude in comparison with the results of other methods (e.g. with the Hilbert-Huang transform method) and for this comparison uses various simulated and real signals. This process is programmatically implemented in LabVIEW, and tests are designed and programmatically implemented to evaluate the pros and cons of using these methods to determine the instantaneous frequency and amplitude for different kinds of signals.
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Automation of the calibration process
Mařas, Michael ; Šedivá, Soňa (referee) ; Beneš, Petr (advisor)
This master thesis deals with the automation of the calibration process at the workplace for calibration of electronic power meters and the description of the method of evaluation of calibration results. The paper analyses the calibration workstation and the manual method of calibration performed by the calibration laboratory staff. Furthermore, proposals for automating the manual method of calibration and a description of the implementation of a program for automating this process are given. Subsequently, the uncertainty analysis is described in the paper. In this section, the uncertainty analysis according to the GUM method and the subsequent calculation of these uncertainties are presented. The correctness of the calculation of uncertainties according to the GUM method is verified by the Monte Carlo method. In the last part of the work, the method of evaluation of the calibration results according to ILAC-G8:09/2019 is described and the form of the calibration protocol is described.
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