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Analysis of the meteorological dates
Králík, Martin ; Čmiel, Vratislav (referee) ; Rozman, Jiří (advisor)
The aim of the bachelor’s thesis is to recognize the basics of atmospherical physics, the techniques and measuring instruments used in weather stations and the statistical analysis of three chosen meteorological parameters. Data analysis is made by using graphical display method, which is discussed later on.
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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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Design of air pump
Gábriž, Michal ; Haltof, Vladimír (referee) ; Ondra, Martin (advisor)
The topic of this bachelor‘s thesis is design of air pump. The work includes an analysis of products and manufacturers, further it examines the current market situation and the technology used in this issue. The result of these analyzes are certain shortcomings and space for improvement. Based on the findings, it is created a custom design of the air pump, described in terms of aesthetic, structural and other aspects of design.
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Wireless Routers and Infuence on Climatic Conditions
Martinka, David ; Vaněk, Jiří (referee) ; Jandová, Kristýna (advisor)
This thesis deals with problematics of installing wireless routers into specific locations depending on their heating and ideal signal transmission. The thesis is divided into eight chapters. The beginning of the thesis is theoretical describes the introduction into the problematics, the second part is practical and covers the executed experiment. The theoretical part contains six chapters – heat, signal, wireless router and measured climatic conditions. The practical part describes the executed experiment by thermo-camera which was used to scan wireless routers in IoT Lab in Avast Software company. Based on this experiment, the ideal position for installing the wireless router is then established. The conclusion of the practical part includes an analysis of the results of the questionnaire survey, in which technically skilled people were asked to describe the height of installation of their wireless router or whether did they consider heat and signal propagation while installing their wireless routers.
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Analysis of the influence of misuse and tire inflation on the stability of the vehicle in a limit situation
Porč, Karel ; Panáček, Vladimír (referee) ; Vémola, Aleš (advisor)
This diploma thesis focuses on incorrect inflation and incorrect use of tires in extreme situations. In the first part, a search of previously created works is reported. This is followed by the elaboration of the basic theory, which describes the driving dynamics of the vehicle, braking and construction, marking, wear and inflation of tires. The next part is the measurement and evaluation of the effect of incorrect inflation and use of tires. Braking deceleration and evasive maneuvers were performed as tests. The third part is an evaluation and summary of the situation.
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Weather Station
Beneděla, Pavel ; Šedivá, Soňa (referee) ; Havlíková, Marie (advisor)
This thesis deals with conception of proposal and implementation of a weather station. Weather station is composed of three main parts which are measuring station, showing station and USB wireless receiving module. Measuring station measures basic meteorologic variables and sends measured variables through wireless communication. Showing station is designed to present measured data with graphics user interface and generate data for a web server.
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The impact of tire inflation on driving performance of a passenger vehicle
Pelán, Radim ; Bradáč, Albert (referee) ; Panáček, Vladimír (advisor)
The key goal of the following diploma thesis is to evaluate influence of the air pressure in the car tires on the driving dynamic, stability and comfort. The first part is dedicated to the theory of the driving dynamic, stability, tire parameters and tire inflation. Next practical part is focused on the drivers’ knowledge about the correct tire inflation and follows with the measurements and evaluation of the influence of the tire inflation on the driving characteristics, riding comfort and its comparison. These influences are summarized and followed up by the recommendations for the drivers and also the expert activities.
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Analysis of the influence of misuse and tire inflation on the stability of the vehicle in a limit situation
Porč, Karel ; Panáček, Vladimír (referee) ; Vémola, Aleš (advisor)
This diploma thesis focuses on incorrect inflation and incorrect use of tires in extreme situations. In the first part, a search of previously created works is reported. This is followed by the elaboration of the basic theory, which describes the driving dynamics of the vehicle, braking and construction, marking, wear and inflation of tires. The next part is the measurement and evaluation of the effect of incorrect inflation and use of tires. Braking deceleration and evasive maneuvers were performed as tests. The third part is an evaluation and summary of the situation.
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Effects of sudden air temperature and pressure changes on mortality
Plavcová, Eva
It has been shown that weather influences human health; however, little attention has been payed to the role of sudden changes of weather characteristics. In this work we developed an algorithm for identification of sudden changes of air pressure and temperature over the Czech Republic. Events were selected from the data covering 1986-2005 and were compared with the database of daily all-cause (total) mortality and mortality due to cardiovascular diseases, both for the whole population and for people aged 70 years or more. Increase of mortality was found after significant temperature increase or pressure drop both in summer and winter months. Decrease of mortality occured after significant pressure increase or temperature drop in summer. Mortality variations are usually more pronounced for population aged 70 years or more, and sudden temperature changes affect mortality on cardiovascular diseases more strongly. Changes in mortality were found after passages of cold fronts in summer, too.
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