|
|
Vliv zemědělské mechanizace na zvěř a možnosti jeho snížení
Chalupová, Veronika
The main goal of the thesis was to evaluate the most commonly used steps in the case of prevention of killing and injuring wild animals during agricultural management. The another goal was to choose optimal technique, verify chosen technique (for the prevention of harming wild animals) practice and create a functioning methodology for it afterwards. The used technique was the searching for the wild life by a drone equipped with a thermal camera. There were three flights done with a drone during which the visibility of wild animals via a thermal camera was examinated. We found that the rate of successful identification of the animals is dependent on the drone flight height and on the temperature of scanned area. We also found that monitoring is not applicable when a morning fog is present. Monitoring also showed that optimal daytime for searching for animals is before the sunrise. With drone we mostly managed to detect deer, but also pheasants and hares.
|
|
|
Robotizované dojení a jeho působení na dojnice
Ševčík, Jiří
The objective of the dissertation thesis was to evaluate the effects of two different types of milking systems (CMS - conventional milking system vs. AMS - an automatic milking system) on average daily milk yield, on frequency of attending robots, on pre-milking teat preparation procedures and stimulation and milking time, on the teats traumatization of Holstein cows. The experiments were performed in two locations: Žabčice School Farm of Mendel University in Brno and ZEMAX, a. s. in Šitbořice. Data was collected for a period 1st January 2014 to 15th December 2015. Higher average milk yield per day and lower milk yield per milking on the other hand on the farm with AMS were caused by a higher frequency of milking. Cows on farm with CMS were milked twice a day. On the farm with AMS dairy cows were milked in accordance with their own needs. Milking frequency in the AMS was in 2014 2.47, in 2015 2.88 per day. Heat stress has negative impacts on milk production. Effect of heat stress showed more markedly in 2015, which is probably related to the fact that the value of THI greater than 80 lasted longer. The length of pre-milking teat preparation procedures and stimulation various neighborhoods was found in AMS in 2014 from 0:13 min. to 0:16 min., in 2015 from 0:14 min. to 0:19 min. On farm with CMS time not be registered. The length of milking time with CMS in both years was 5:02 min. In AMS was in 2014 from 3:03 minutes to 3:53 min., in 2015 from 3:05 min. to 4:45 minutes. In process of milking machine teat traumatization were smaller when using AMS.
|
|
|
Determination of stress of Norway spruce by direct methods
Krejza, Jan ; Světlík, J. ; Bellan, Michal ; Horáček, Petr
The aim of this methodology is to introduce methods of forest ground monitoring leading to evaluation of Norway spruce tree vitality. Certified methodology describes: measuring of the stem surface temperature by thermography, measuring of the sap flow, measuring the stem diameter fluctuation and by the analysis of xylogenesis and wood morphology. Emphasis was placed on the detection of the stress reaction before occurrence of the visual symptoms. The aim of this methodology is to present a comprehensive set of methods for measuring ecopysiological activity of a tree and to determine its health status. The goal of this methodology is to provide a unique tools for foresters and for forest management for direct and precise evaluation of health status of individual trees, but also a whole complexes of forest from the ground perspective. The individual methodological approaches are defined, can be used in practice and their interpretation is unambiguous. The novelty is based on the direct measurement of the physiological activity of the individual trees, which exclude any degree of subjectivity in the evaluation process.
|
|
|
Contactless thermography in clinic medicine
Langerová, Jana ; Staffa, Erik (referee) ; Bernard, Vladan (advisor)
This thesis deals with the theory of infrared thermography in medicine and its subsequent practical application in the creation of the program. As part of this diploma thesis, researches were carried out on the topic of thermovision imaging techniques, its use mainly in clinical medicine and also research in the field of image data processing. Theoretical knowledge is written into the first three chapters of this thesis. The next chapter deals with the design of a web application for the analysis of thermographic images of patients with vascular disease lower limbs and the PHP program environment with its particulars. In the second half of the thesis there is a detailed description of the practical creation of the mentioned application in PHP environment with the use of some PHP libraries. One chapter is also devoted to the discussion of the method of obtaining thermographic images for testing the created application and to the statistical evaluation of acquired data. This thesis is divided into 8 different chapters and also into many sub-chapters.
|
|
|
PID Analysis of Photovoltaic Power Plants in Czech Republic
Hamr, Tomáš ; Strachala, Dávid (referee) ; Hylský, Josef (advisor)
This Bachelor´s Work summarizes basic knowledge about construction technology of solution of photovoltaic equipment. solution which suffers from degradation by influence of potential. There are described possible restriction solutions of potential induced degradation which takes effect at the level of FV system, FV modul and FV cell. The work contains diagnostics of photovoltaic power station using thermovision measuring and U/I analysis with following assessment of a problem. Futhermore, the cooperation will continue with companies NWT and Sunfin where possible futher measurement with analysis will take place and data analysis from solar power stations.
|
|
| |
|
|
Proposal of measures for reducing energy demands of food stores
Julinová, Patricie ; Vlach, František (referee) ; Bečkovský, David (advisor)
The master thesis deals with measures to reduce energy performance of grocery store building. Model of the grocery store is evaluated according to a recommended energy values specified by Czech standards and according to the real values of the actual consumption. These values are compared. Final building analysis for a proposal measures to reduce energy consumption is based on the invoices of the real consumption and on the experimental assignments. Experimental measurements are the Blower door test of the tightness of the building envelope, the measures with the thermovision camera and the measuring of the illumination intensity. The most efficient proposal is extended to the whole model network of the food shops in the Czech Republic.
|
|
|
Vibration and Acoustic Emission Reduction of Powertrains using Virtual Engine
Svída, David ; Kovář, Rudolf (referee) ; Dundálek, Radim (referee) ; Kovář, Rudolf (referee) ; Dundálek, Radim (referee) ; Píštěk, Václav (advisor)
Doctoral thesis deals with combustion engine cranktrain vibrations and vibration analysis methods. The work applies new computational models aimed at powertrain vibration decrease. The computational models can be used in the first stages of powertrain development. Temperature dependences of the rubber shear modulus and loss factor characteristic are found by response analysis of the free damped vibrations in the first part of the thesis. Viscoelastic model parameters of two dampers with different rubber hardness are calculated using optimization methods. Temperature distribution inside the rubber part during the harmonic oscillation is calculated with the knowledge of previous values. Computational models together with a user interface are assembled in Matlab/Simulink software tool. Computational model results of the viscoelastic rubber damper are verified by measurements on a prototype diesel engine in the whole operating engine speed range. Torsional vibrations of the crankshaft with torsional damper are measured by POLYTEC laser rotational tools. The temperature distribution on the damper surface is obtained by Infratec VarioCAM thermographic system. Combustion pressures in the cylinder are measured by SMETEC Combi indication tools. Both the temperature distributions and combustion pressures are used for computational purposes. All the measurement procedures are described also in the thesis.
|
|
|
Multispectral Map Building in Mobile Robotics
Burian, František ; Mazal,, Jan (referee) ; Zemčík, Pavel (referee) ; Žalud, Luděk (advisor)
The dissertation deals with utilisation of multispectral optical measurement for data fusion that may be used for visual telepresence and indoor/outdoor mapping by heterogeneous mobile robotic system. Optical proximity sensors, thermal imagers, and tricolour cameras are used for the fusion. The described algorithms are optimised to work in real-time and implemented on CASSANDRA robotic system made by our robotic research group.
|
|
|
Measurement of surface temperatures in mechanical engineering
Stránský, Marek ; Slaný, Martin (referee) ; Polzer, Aleš (advisor)
This work deals with contact and non-contact methods of surface temperature measurement. The work contains a list and formulations of basic terms and laws of thermodynamics. Furthermore, the work deals with the description and comparison of the properties and use of certain devices for contact and non-contact surface temperature measurement. The experimental part is focused on dependence of the turning speed on the turning knife thermal stress. Subsurface thermocouples, surface thermocouples and thermovision were used for the temperature detection. The subsurface temperatures were afterwards used (as data inputs) for the inverse calculation of surface temperatures. All results obtained were then compared to each other.
|
guest ::
