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Design of a current data logger for LPWA sensors
Mikulášek, Michal ; Možný, Radek (referee) ; Štůsek, Martin (advisor)
This Master thesis deals with the design and construction of a measuring device for measuring and the current consumption logging of sensors using LPWAN (Low Power Wide Area Network) technology. The theoretical part of the thesis firstly summarizes selected LPWAN technologies. Selected technologies, namely: LoRaWAN, Sigfox and Narrowband IoT (NB-IoT), are described more in detail. Further, the current measurement techniques are briefly discussed. The main focus is given to the current shunt measuring methods. The second half of thesis describes procedures conducted during the design and construction of a measuring device. The current measuring is based on the current shunt circuit complemented by the voltage amplification circuit, whose output is subsquently converted into digital form using an AD converter. The thesis describes in great detail the procedures for selecting individual components and important processes used in design of printed circuit boards. An integral part of the measuring device implementation is the design and implementation of control software, which is described in detail and supplemented by workflow charts underlining the entire description. The implementation of the entire measuring device is completed by the design and implementation of the cover box using 3D printing technology. Finally, the specifications of designed device are briefly discussed based on the limits of the used components.
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Wheel Alignment for race cars
Vanda, Marek ; Hejtmánek, Petr (referee) ; Porteš, Petr (advisor)
This diploma thesis deals with the design of device for measuring wheel alignment and set- up of race car chassis. The real prototype of measuring device based on previous theoretical design has been made. The measuring procedure is mentioned as well. Another part is focused on factors affecting accuracy of measurement. The last part contains evaluation and discussion of gained results based on several measurements that have been done with prototype of measuring device.
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Intelligent wattmeter with network communication options (Ethernet / WiFi)
Haluška, Daniel ; Juráň, Radovan (referee) ; Rusz, Martin (advisor)
The goal of the Bachelor Thesis is the implementation of a measuring device for measuring alternating voltage, current and calculating of power consumption. A voltage divider with one-way offset is used for voltage measurement, and the ACS712 integrated circuit with a Hall sensor provides electric current measurement. The Arduino singleboard computer, for which the OLED display is suitable, takes care of the representation and calculation of the electrical power. Furthermore, this device allows communication with the Internet and through the server allows a simple graphical display of measured data. The manufactured measuring device allows measuring power regular outlet up to 3680 W.
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Diagnostický systém elektrických aktuátorů turbodmychadel
Posádka, Jakub
This master’s thesis deals with the creation of a diagnostic system concept for measuring the parameters of electric actuators of turbochargers. This concept is based on a review of the current measurement methodology in the company, which deals with the development and testing of turbocharger actuators, presented in the author's bachelor's thesis. The aim of the thesis is to create a design of a measuring system operated during mobile measurements and then to carry out experimental measurements. The first part of the thesis describes the design research of electronic turbocharger actuators. In the second part are presented the construction of the measuring device and the methodics. The output of the experimental measurement is the evaluation of selected parameters that are crucial for measuring the properties of the actuators. In the conclusion, the identified weaknesses are mentioned and recommended for modification for future use.
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Smart Metering Device with Sigfox Interface
Janík, Jakub ; Strnadel, Josef (referee) ; Šimek, Václav (advisor)
The aim of this bachelor thesis is the design and production of a measuring device using a microcontroller from the company NXP. The device sends measured values via the Sigfox IoT network, allows them to be read via Bluetooth Low Energy and monitors its own energy consumption from the battery. Any sensor whose values will be sent can be connected to the device.
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Intelligent wattmeter with network communication options (Ethernet / WiFi)
Haluška, Daniel ; Juráň, Radovan (referee) ; Rusz, Martin (advisor)
The goal of the Bachelor Thesis is the implementation of a measuring device for measuring alternating voltage, current and calculating of power consumption. A voltage divider with one-way offset is used for voltage measurement, and the ACS712 integrated circuit with a Hall sensor provides electric current measurement. The Arduino singleboard computer, for which the OLED display is suitable, takes care of the representation and calculation of the electrical power. Furthermore, this device allows communication with the Internet and through the server allows a simple graphical display of measured data. The manufactured measuring device allows measuring power regular outlet up to 3680 W.
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Tyre Radial Stiffness Measurement
Novodomský, Tomáš ; Vančura, Jan (referee) ; Hejtmánek, Petr (advisor)
This thesis deals with the radial stiffness of a tyre. The first part of is devoted to a brief description of a tyre construction. The next part is devoted to measuring the radial stiffness of a tyre and the design of a new measuring device. The last part of the thesis deals with the influence of the radial stiffness of a tyre on the vertical dynamics of ta vehicle and simulations of this effect in the MATLAB / Simulink software.
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Design of a current data logger for LPWA sensors
Mikulášek, Michal ; Možný, Radek (referee) ; Štůsek, Martin (advisor)
This Master thesis deals with the design and construction of a measuring device for measuring and the current consumption logging of sensors using LPWAN (Low Power Wide Area Network) technology. The theoretical part of the thesis firstly summarizes selected LPWAN technologies. Selected technologies, namely: LoRaWAN, Sigfox and Narrowband IoT (NB-IoT), are described more in detail. Further, the current measurement techniques are briefly discussed. The main focus is given to the current shunt measuring methods. The second half of thesis describes procedures conducted during the design and construction of a measuring device. The current measuring is based on the current shunt circuit complemented by the voltage amplification circuit, whose output is subsquently converted into digital form using an AD converter. The thesis describes in great detail the procedures for selecting individual components and important processes used in design of printed circuit boards. An integral part of the measuring device implementation is the design and implementation of control software, which is described in detail and supplemented by workflow charts underlining the entire description. The implementation of the entire measuring device is completed by the design and implementation of the cover box using 3D printing technology. Finally, the specifications of designed device are briefly discussed based on the limits of the used components.
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