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Electrical installations in apartment building
Novotný, Jan ; Formánek, Marian (referee) ; Doležalová, Jana (advisor)
This bachelor's thesis deals with electrical wiring in apartment building. The aim is to describe the types of distribution networks, implementation possibilities of service lines, describe the individual parts of the wiring in the building and the principles of their implementation. Further describe basic electrical materials and to explain the design of artificial lighting. In the practical part the information applied to a particular apartment building, together with the calculation of the estimated annual energy consumption of flats. For the apartment building project is created in the form of engineering report and drawings.
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Influence of the different light sources of the vehicle headlights on the perception of an obstacle by the driver of the vehicle
Sklenář, Michal ; Bradáč, Albert (referee) ; Motl, Jakub (advisor)
This thesis focuses on examining the influence of various light sources (halogen, xenon, LED) of vehicle headlights (Škoda Octavia III. generation) on the perception of pedestrians by the driver of the vehicle. The theoretical part contains the concepts essential for a general understanding of the main topic of this thesis. The aim of the thesis is to present how the brightness and contrast between the pedestrian and his surroundings changes when illuminated by one of these light sources due to the increasing distance between the pedestrian and the vehicle and the different type of pedestrian clothing. The results of the measured experiment are presented using charts, photo documentation and brightness maps. These are then compared with the results obtained by measuring the distance of pedestrian perception by individual probands. The conclusions applicable to forensic engineering practice are drawn from the compared values.
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Placement Optimization of Projector Lens
Bezděk, Matěj ; Važík, Jiří (referee) ; Novotný, Pavel (advisor)
This diploma thesis deals with the creation of engineering design of holder of projector lens. The thesis is created in cooperation with department of development in Varroc Lighting Systems, s.r.o. Initial part provides a brief description of the development of lighting technology used in car´s headlamps. The following part describes solutions currently used in clamping the lens in holder. The main part of the thesis focuses on the design of holder of projector lens itself. Projector lenses testing provide critical values of cohesive failure of the lens material, which cannot be exceed during the process of lens fitting and its subsequent clamping. In the final part the engineering design is verified and optimized using finite element analysis.
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Comparison of Light Parameters of Different Light Sources of Vehicles' Headlamps
Suchomel, Filip ; Motl, Jakub (referee) ; Bradáč, Albert (advisor)
This thesis is focused on comparison of parameters of light sources (halogen, xenon, LED) installed in Skoda Octavia 3rd generation. The opening part solves analysis of the current state of lighting technology and its impact on traffic safety. The next part is focused on general parameters of light, construction of light sources, optical systems and adaptation of the human eye to various light conditions, especially contrast. The practical part is focused on comparing the contrast values of individual light sources in relation to the dark and lightly dressed pedestrian in the area without artificial lighting.
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Energy labels of electrical appliances
Diblík, Jan ; Bok, Jaromír (referee) ; Drápela, Jiří (advisor)
In my bachelor's thesis I engaged in energy cards of electrical appliences. I acted and controled for Law number 406/2000Collection, for manage energy what frame preparation Czech Republic walk in European Union introduce in harmony with european legislature. This law and legislature in conjunction with law signify charge for all producer alectical appliences mention energy cards in the all appliences. I mention for example energy card. On the energy card are appliences distribute for seven energy class according to class A is the most of economy class and class G is least economy class. On the energy card mention next particulars, for example name or business symbol of producer, identity symbol of model applience use of producer or impporter and next. In my thesis I engaged progresses for determine energy class electrical appliences formation universal progresses for determine energy class appliences, define basic universal qualities and parameters. There are pieces of knowledge is possible take advantage of already non-cards appliences, determine energy classes divided for two groups. First group energy class is enumerace for consuption electric energy and second group energy class is enumerace with regard to next quantity. It was extract wrote next important and universal date on energy card. All pieces of knowledge took advantage of application energy card on non-card appliences factual home bakery of bred. At this home bakery of bred chaose reference conditions at what measured electrical consuption. I was set up energy class in what Iam put into its this consuption. For objektive was set up energy card this home bakery of bred.
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Light Sources
Janík, Daniel ; Bejček, Ludvík (referee) ; Havlíková, Marie (advisor)
The aim of the thesis is to introduce the basic photometric quantities and measurement of these quantities. Next target is to get acquainted with the basic types of light sources, including various types, their construction and principle of their function. The work also deals with the measurement of electrical and photometric parameters of nine samples of concrete light sources. Measured sources in terms of energy and terms of quality of the light are compared with each other and with the data supplied by the producer.
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Possibilities of Vehicle Lighting to Increase Road Transport Safety
Balharová, Gabriela ; Kresta, Vojtěch (referee) ; Tokař, Stanislav (advisor)
This master’s thesis deals with the possibilities of illumination of motor vehicles. Thesis is divided into two sections, from which the first discusses precisely the possibilities of lighting of motor vehicles at the present time. What are the modern lighting techniques, that can be found on the market and what is their impact on safety enhancement in road traffic. Second section is about the practical measurement of low and high beam afterglow. This measurement is being compared between two types of headlamps, namely halogen headlights and xenon headlights. Part of the measurement is as well measurement of illumination intensity precisely for these headlights. The output of measurement is the creation of own illumination intensity diagrams and afterglow diagrams of particular headlights, in comparison to isolux diagrams provided by the headlights manufacturer. Consequently are solved the issues about utilization of the isolux diagrams in expert praxis.
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The Lighting Equipment Used in Modern Vehicles and the Measurement of the Range of Visibility of the Main Headlights
Martínek, Michal ; Kropáč, František (referee) ; Vémola, Aleš (advisor)
This magister’s thesis is about modern lighting of vehicles, the visual range and afterglow in poor visibility. The first part of the thesis provides a detailed analysis of the current situation and problems, including a comprehensive description of the sources of light radiation, lamps, structures, and describe the systems used in modern lighting technology of vehicles. In the second part of the thesis there are the scientific methods to determine the issue of visual range and afterglow of the headlights. The second part is about the application of acquired techniques to detect an afterglow and the visual range of vehicles with modern headlights with a light source with xenon lamp, compared with a vehicle with a halogen lamp and a vehicle with an older halogen headlight.
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Influence of the different light sources of the vehicle headlights on the perception of an obstacle by the driver of the vehicle
Sklenář, Michal ; Bradáč, Albert (referee) ; Motl, Jakub (advisor)
This thesis focuses on examining the influence of various light sources (halogen, xenon, LED) of vehicle headlights (Škoda Octavia III. generation) on the perception of pedestrians by the driver of the vehicle. The theoretical part contains the concepts essential for a general understanding of the main topic of this thesis. The aim of the thesis is to present how the brightness and contrast between the pedestrian and his surroundings changes when illuminated by one of these light sources due to the increasing distance between the pedestrian and the vehicle and the different type of pedestrian clothing. The results of the measured experiment are presented using charts, photo documentation and brightness maps. These are then compared with the results obtained by measuring the distance of pedestrian perception by individual probands. The conclusions applicable to forensic engineering practice are drawn from the compared values.
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