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Design and realization of the power meter with IoT connectivity
Zagrapan, Ivan ; Lattenberg, Ivo (referee) ; Krajsa, Ondřej (advisor)
This thesis deals with designing and creating working prototype of IoT Wattmeter with option to switching relay. This device can be control remotely with option to read measured values. To reach my goals, I am using open-source designing board, different sensors and modules. I tis possible to communicate with device through Wi-Fi module ESP 8266 and to test LPWAN network I am using SIGFOX, module. To measure current, it´s used simple Hall-effect sensor and all available information’s are displayed on OLED display. To switch the circuit off or on solid state relay was used. In theoretical part of the work, I am trying to explain working principles of every module and source code, which I am using to control these modules. In practical part I created scheme, using CADSoft EAGLE and created functional wattmeter. Whole work is programmed in C++ language using Arduino IDE.
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Utilization of measurer for external performance in preparation period of cyclists and triathlonists in Czech republic
Kučera, Zdeněk ; Horčic, Josef (advisor) ; Kovářová, Lenka (referee)
SUMMARY: Title: Usage of measurer of external performance in trainings of cyclists and triathlonists in Czech republic Made by: Zdeněk Kučera Supervisor: PaedDr. Josef Horčic, Ph.D. Objectives: The main goal of this bachelor thesis is to find out, what is the usage of measurer of external performance for training management. The usage of wattmeter will be analysed among cyclists and triathlonists in Czech Republic. Methods: In my research, which was realized for the purpose of reaching the goal of thesis, was used the survey. The obtained information were sorted and interpreted by graphs. Results: It was found out, that performance measuring according to watts is supported and wattmeter plays an important role among other ways of measuring performance. It is necessary, that using of this tool has to be based on experiences, knowledge and individual access of cyclist. In despite of popularity of wattmeter the other ways of performance measuring are still inconsiderable, especially heart rate is not replaceable. Keywords:Wattmeter, heart rate, cadence, training management.
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Logger pulse from wattmeter
Severa, Pavel ; Kubásek, Radek (referee) ; Friedl, Martin (advisor)
Most electronic wattmeter contains output for processing information on the con- sumption of other devices. The aim of this semestral project is to create a suitable device for reading output from power meter, store this information on the removable medium in size and ability to integrate into the distribution cabinet. Among other things, will monitor and record mode cheaper electricity, known as night mode.)
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Problems and measurements of the basic electrotechnical quantities
BOHÁČ, Radek
The purpose of this thesis is selection and specification of basic teaching methods used in heavy current laboratory during vocational training education at secondary school. Basic methods for electrical values measurements in heavy-current laboratory, measuring instruments basic division and measured electrical values evaluation. Further, basic measurement of electrical values, current, voltage, power, resistance and capacity are specified here.
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