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Thermal Mass Flowmeter
Mlčoch, Albert ; Kunz, Jan (referee) ; Beneš, Petr (advisor)
The thesis deals with the design of a mathematical model and practical implementation of a flowmeter based on the thermal principle. The range of the proposed flowmeter is from units of kilograms per hour to lower hundreds of kilograms per hour. The design of the flowmeter is non-invasive to the flow channel, the heating element is located outside the pipe. In this paper, the flowmeter parameters are identified and a temperature regulator is proposed. Measurements are made on a test bench. The results of the measurements are discussed. Modifications to the existing hardware are suggested.
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Network End Node for Spacial Monitoring of Atmosphere Parameters
Mlynář, Zdeněk ; Smetana, Lukáš (referee) ; Novák, Marek (advisor)
LoRaWAN end node is often a device composed of a sensor, or actor. In this case it is sensor monitoring atmosphere parameters. This can be used to investigate atmospheric impact on Free Space Optics. This work is firstly focused on physical layer LoRa, then on LoRaWAN communication protocol. LoRaWAN device classes are also described and examples of measurable parameters can be found at the end of the theoretical part as well. The practical part describes all components, which were chosen when designing this device, and lastly it comprises the schematic design. The result is printed circuit board design.
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Meteorological data acquisition and transmission
Holínek, Pavel ; Adamec, Filip (referee) ; Frýza, Tomáš (advisor)
This document is about collection and presentation of meteorological data. To get data was used digital and analog sensors, controled by the microcontroller ATmega16. Meteostation has 2 modules. The first is designed for monitoring of indoor values and displaying data, the second module is for outdoor measurements. Next research was focused on the comparison with other meteorological stations and more expansion options.
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Testing of airflow sensor
Chovanec, Radim ; Vojáček, Zdeněk (referee) ; Vdoleček, František (advisor)
This work is aimed at measuring air velocity, especially in closed channels. Closed channel flow sensor testing is performed in cooperation with Sensit Rožnov. A test work station has been designed and created on which the selected characteristics of the sensor were practically verified. The work describes the measurement procedure and its subsequent evaluation.
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Measurement of meteorological variables
Škorpík, Daniel ; Harabiš, Vratislav (referee) ; Chmelař, Milan (advisor)
This bachelor thesis discusses about the basic meteorological variables, especially temperature and airflow. These magnitudes are measured using an anemometer which uses resistive sensors, namely, two thermistors of NTC type that described technology, operations, methods of scanning, sensor placement and implementation of such a device. After that was designed block diagram and circuit diagram. The meter is realized, than we describe the individual components and then is calibrated and tested. In conclusion, it is evaluated for use in medicine.
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Speed Measurement of Yacht
Černý, Ondřej ; Bradáč, Zdeněk (referee) ; Šedivá, Soňa (advisor)
Work deals with the measurement speed of yacht and wind speed. For measuring is used GPS module and cup anemometer. In the thesis is detailed analysis of the process and construction of eletrical equipment that processes incoming data of speeds and displayed on the screen. Thesis further processes the measurement results and compares the theoretical assumptions and practice
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Measuring station for the system of the remote energy supply
Dočekal, David ; Vaněk, Jiří (referee) ; Křivík, Petr (advisor)
This thesis is focused on the creation of measuring workplace for remote power supply system. This is the measuring of the workplace, engaged in the processing of measured data, the production of electrical energy made by a photovoltaic panel and wind turbines. In the theoretical part, the reader is familiar with the issue of renewable energy sources. The first chapter is about the energy of the wind. Here is described the emergence of the wind, the basic division of wind power, through the production of electrical energy to the measurement itself. The second chapter deals with the solar energy. This chapter describes the emergence of the solar energy, photoelectric effect, description of characteristic features and related evaluation of the photovoltaic panel. The reader learns the basic distribution photovoltaic panels here and their manufacturing. The third chapter is devoted to measurement methods and specifying the basic conditions for the evaluation of the operation of wind turbines and photovoltaic panel. In the fourth chapter describes the basic data on individual facilities, which have been selected for this thesis and the involvement of the measuring site. There is also included wind power JPT-100 photovoltaic panels A-130 anemometer TX20ETH, pyranometer SG420 and temperature sensor PT100. Measuring software is described in the fifth chapter. In the last chapter, contains the experimental measurements in the selected time interval and the actual evaluation.
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Miniaturized Measurement System for Wind Speed Estimation.
Štěpánek, Michal ; Vágner, Petr (referee) ; Urbanec, Tomáš (advisor)
This thesis is analysis of thermal anemometer, which contains design and realization. For measuring wind speed there are not used any mechanical moving parts in this way. This measuring uses two thermistors. One of these measures temperature of air, which is very important for compensation of whole system. Temperature of second thermistor is kept on constant value. This value is higher than surrounding air temperature about constant difference. Fluctuant air cools this sensor and because of that systém must supply more of heat. By analysis of value of supplied heat, we can calculate the wind speed value.
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Testing of airflow sensor
Chovanec, Radim ; Vojáček, Zdeněk (referee) ; Vdoleček, František (advisor)
This work is aimed at measuring air velocity, especially in closed channels. Closed channel flow sensor testing is performed in cooperation with Sensit Rožnov. A test work station has been designed and created on which the selected characteristics of the sensor were practically verified. The work describes the measurement procedure and its subsequent evaluation.
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Evaluation System of Thermal Condition Environment and his Measurement Uncertainties Analyze
Košíková, Jana ; Němeček, Pavel (referee) ; Kureková, Eva (referee) ; Vdoleček, František (advisor)
The Ph.D. thesis deals with the evaluation of indoor thermal environment in which people are located. A great attention is paid to the thermal comfort. If a person in a given environment does not feel well, then makes mistakes. Thermal comfort is created many parameters that can be monitored and managed. These parameters include not only temperature but also other parameters such as the mean radiant temperature, operative temperature, humidity and air velocity and the draft. All these parameters can be measured. The standard ČSN EN ISO 7726 is written how and what the parameters are measured. Furthermore, this standard provides requirements for measuring equipment. There are many professional measuring devices. Unfortunately, these devices are very expensive. Therefore are within the project GACR 101/09/H050 - Research on energy- saving equipment to achieve the quality of the indoor environment at our faculty developed sensors for thermal comfort, which have showed comparable accuracy measurements as a professional , but it will be cheaper than professional. Knowledge of real parameters of the developed sensor thermal comfort environment is important, as with any other measurement devices, and also need to verified whether it has the required accuracy. In order to objectively sensors testing were developed two chambers - the testing and calibration chamber. The developed sensors were tested both in the open laboratory, and also in the test chamber. Then uncertainties measurement were calculated from the results of measurements This work deals with the evaluation of thermal comfort, the measurement of parameters of thermal environment, the evaluating the results of measurements and determining the measurement uncertainty of the sensors. In this thesis, based on these results, were recommended suitable sensors for measuring various parameters environment.
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