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Vibration diagnostics of bearings
Navrátil, Pavel ; Mazal, Pavel (referee) ; Klapka, Milan (advisor)
This bachelor’s thesis introduces the basic principles of vibrodiagnostic methods and their importance for individual fase of bearing’s damage. The selected methods studied are: acoustic emission, SPM (shock pulse method), SEE (spectral emission energy), envelope method, High frequency emission, Crest factor, Kurtosis factor and special method for slow-motion machines Adash Compressed Time.
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Plethysmography for retinal video processing
Plavcová, Daniela ; Valterová, Eva (referee) ; Kolář, Radim (advisor)
Sight is one of the five human senses and is very important for exploring near and far surroundings. However, this is prevented by various eye defects, which may be related to the vascular system of the retina and the pulsations that are observable on it. This work deals with the study of the relationship between the mentioned pulsations and glaucoma. To search for connections between these two aspects, video recordings from the retina are used, the pulsation of which is further worked in the form of a 1D signal, especially in the spectral region.
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Proposal for Change in the Company Process
Nováková, Johana ; Mazlová,, Tamara (referee) ; Juřica, Pavel (advisor)
This thesis deals with problems of process management in a field of savings identification with the goal of an analysis of a chosen process and creation of a proposal for current status improvement from a point of effectivity. It describes process management, process modeling and improvement and project management. Further it presents a current status of the process, project logic frame, net analyzis and risk identification. Finally it shows a map of future proces with an identification of weak points and suggestions for improvement for an organization to improve state of the field of savings identification.
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Implementation of Apartment House for Social Housing in Starec - Building Contruction Project
Bobek, Vojtěch ; Nečasová, Barbora (referee) ; Liška, Pavel (advisor)
Master thesis focuses on complex conducting of the technological project with accented earthwork, laying foundations and ceiling construction. Apartment building consists of two floors and is based in complicated geotechnical conditions which require changing subsoil and laying a foundation slab. The main aim of this thesis is a proposal of technological notes, time and financial management, selection of machinery, transport to the building site, work safety regulations, quality check of the conducted work and construction organisation.
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Single-Phase Induction Motor Calculation
Ševčík, Pavel ; Vítek, Ondřej (referee) ; Hájek, Vítězslav (advisor)
This master's thesis considers by single-phase asynchronous motor. The first part discuss about construction, principle of operation and basic parameters of this motor type. It also discussed the emergence of torque and torque characteristics of the different types of engines. The second part explains the basic ways of obtaining grip moment including outline the principles of functions particulars constructions types, which is produce in practice. In the third part is minutely analyse single-phase asynchronous motor with auxiliary phase and permanently conect capacitor, including method of assign size of a capacitor. Fourth part section provides the principles of the procedure for calculating basic parameters of the single asynchronous motor with auxiliary phase. At the last part is accomplished a calculation of single-phase asynchronous motor with permanently conect capacitor at auxiliary phase including comparation with already manufacturing motor.
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The influence of cobalt additive on parameters of positive electrode for Ni-Cd accumulators
Svoboda, Michal ; Svoboda, Vít (referee) ; Špičák, Petr (advisor)
The Master´s thesis deals with description of the influence of cobalt additive on positive electrode parameters for Ni-Cd accumulators. Trough the use of Electrochemical Quartz Crystal Microbalance are analysed the effects which decline effective life of positive electrode during accelerated cycling. Theoretical part describes important characteristics of Ni-Cd accumulators, the working principle and effects which are in progress on positive electrode during cycling. The next part deals with description of system EQCM and the pricnciples of doping active mass with cobalt additive. Practical part consists of EQCM system calibration and electrochemical measurements. The principal aim is detection of the influence of cobalt additve on active mass during cycling in different electrolytes. From the results of measurements is set the optimal amount of cobalt additive.
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Intelligent lightning system
Harman, Ján ; Šír, Michal (referee) ; Bradáč, Zdeněk (advisor)
The aim of my master’s thesis is a system for control of the light intensity. It is electronic equipment which controls the intensity of the light circuits based on settings and input signals. This equipment could work on single-phase systems or multiphase systems. The equipment is controlled by the signal DMX-512 which is a standard for the control of lighting technologies. The set up of this equipment is based on a personal computer or in a limited form by a small connected display.
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Eulerian Video Magnification in Surveillance Systems
Ricanek, D. ; Honec, P.
In this article we look at the research behind Eulerian Video Magnification, its beginnings and innovations that lead to its potential use in real time heart rate measurement. The spatial amplitude changes are exaggerated using EVM in conjuncture with face detection using the Viola-Jones algorithm to allow measurement of moving subjects. Fourier transform on the temporal signal of pooled skin pixels then yields heart rate. The algorithm is tested against movement and at different distances.
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