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Special length sensors
Pavliš, Jakub ; Prostredník, Daniel (referee) ; Jankových, Róbert (advisor)
This bachelor thesis contains a theoretical description of selected length sensors with emphasis on inductive and optical sensors. The main benefit of this thesis is the design and realization of a special inductive sensor with a small pressure force and an optical sensor with a resolution of 2.5 nanometers. In the thesis are analyzed the selected metrological properties of the designed sensors and the formulation of recommendations for their practical use.
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Vehicle response when using the Start-Stop system
Vaňková, Denisa ; Kohout, Tomáš (referee) ; Jelínek, David (advisor)
The diploma thesis deals with the research of vehicle response in case of using the Start-Stop system in passenger cars with manual and automatic transmission. Values measured using CAN-bus connection of the drivers using Start-Stop system are compared with values from identical vehicles without using the Start-Stop function. A device designed specifically for the purpose of these measurements is used as the control element of the measurements, operating on the basis of a wheel rotating uniformly with the movement of the vehicle and an optical sensor which detects the movement. The measured results are intended to demonstrate the response time of the vehicle using the start-stop function and to determine whether this system has an effect on the starting delay in normal traffic. By using CAN-bus data measurements, detailed start-up graphs are available for all the vehicles studied. The study found that it depends on the type of gearbox used in the vehicle, while with a manual gearbox, Start-Stop does not have a large impact on the flow of traffic in terms of the vehicle's response to the driver. For automatic transmission, it depends on its type, and the differences between individual starts, with the Start-Stop system on and off, differed considerably. The accuracy of the measurement was similar for both measuring devices, but the CAN-bus measurement is more useful, as it is possible to determine the exact course of the start from the obtained data. The manufactured measuring device is easier to operate and the evaluation of the run-up length is done automatically, immediately after the run-up. Based on this work, more extensive research can be carried out in the future, the purpose of which could be to categorize the run-off lengths by individual vehicles, which is particularly important for the purposes of accident analysis.
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Photoctive Nanofiber Membranes for Oxygen Sensing
Ludačka, Pavel ; Mosinger, Jiří (advisor) ; Lang, Kamil (referee)
In this work, luminescent oxygen sensors based on the quenching of porphyrin sensor molecules encapsulated in a nanofibrous polymer matrix prepared by electrospinning were prepared and studied. The prepared sensors were characterized using electron microscopy, absorption and emission spectra, including time-resolved emission spectra. The sensitivity of the sensors was optimized in different polymer matrices, concentrations of porphyrin sensor molecules, and the thickness of the nanofibrous sensor layer. Furthermore, the photogeneration of singlet oxygen and the resulting antibacterial properties of the sensor nanofiber membrane were demonstrated. Key words Photoactive, nanofiber, oxygen, singlet oxygen, optical sensor
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Water quality analysis using colorimetry
Kovaldová, Eliška ; Zumberg, Inna (referee) ; Čmiel, Vratislav (advisor)
This bachelor's thesis deals with the analysis of water quality using colorimetry. Part of the work is an introduction to the physical and chemical parameters of water, as well as optical methods, which include photometry, spectrophotometry and colorimetry, and an introduction to regression analysis. These methods and analysis are followed by a practical part by measuring pH, nitrate and water hardness using a spectrophotometer and an AS7262 visible light sensor with a SparkFun development board. At the end of the work there is a comparison of absorption spectra, calibration curves and linear regression parameters of both methods.
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Contactless Monitoring of Objects Movement
Kadlubcová, Anna ; Čmiel, Vratislav (referee) ; Sekora, Jiří (advisor)
This diploma thesis deals with contactless monitoring of objects movement. The theoretical part is focused on distance measurement, ultrasonic and optical sensors. In the practical part, the actual design and implementation of the solution is presented, both in terms of hardware and software. This part contains the verification and demonstration of the final prototype.
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Parametrization of PID controller on Mitsubishi PLC
Koláčný, Michal ; Bartík, Ondřej (referee) ; Blaha, Petr (advisor)
The aim of this thesis is to create a demo application for a brief introduction with the components of the PID regulator. The PID regulator is realized by a function block, which is implemented in a Mitsubishi PLC series iQ-F. The controlled variable is the height of the ping pong ball. The ball is kept at the desired height by changing the air flow rate. The change of the air flow is achieved by changing the motor speed. A propeller is mounted on the motor shaft which blows air into the tube. A SHARP GP2Y0A41SK0F optical distance sensor is built into the tube to sense the actual height of the ball. A model of this system is created and simulated in MATLAB program.The current information about the system is displayed on the Mitsubishi GT-2104RTBD operator panel, where it is also possible to change the sizes of individual parameters of the regulator.
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Design of airsoft gun control electronics
Šindelář, Jiří ; Adámek, Roman (referee) ; Bastl, Michal (advisor)
This thesis deals with control electronics of airsoft gun type AR15. To create a prototype, it was necessary to select applicable components, design a printed circuit board, and create intelligent control software. Thanks to the designed electronics, the user will be able to fully control the behavior of his weapon.
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Optical Speed Sensor Of Surface
Vaněk, Ondřej
The aim of this work is a development of device for surface-velocity measurement which uses an ordinary optical mouse sensor. The proposed sensor should have find its usage in industrial applications for low-cost contactless measurement of conveyor belts or semi-finished products, thus some other gauges could check quality of products.
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Special length sensors
Pavliš, Jakub ; Prostredník, Daniel (referee) ; Jankových, Róbert (advisor)
This bachelor thesis contains a theoretical description of selected length sensors with emphasis on inductive and optical sensors. The main benefit of this thesis is the design and realization of a special inductive sensor with a small pressure force and an optical sensor with a resolution of 2.5 nanometers. In the thesis are analyzed the selected metrological properties of the designed sensors and the formulation of recommendations for their practical use.
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