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Use of infrared thermography in dairy cow health management
BERÁNKOVÁ, Barbora
The thesis deals with the use of infrared thermography in dairy cow health management. The research part of the thesis focuses on mammary physiology, thermoregulation, and heat stress management. It also outlines the issues of the most common disease in cattle with a focus on mastitis. The second part focuses on infrared thermography. It discusses its importance and application in operation. Subsequent chapters deal with thermographic cameras, the thermogram and the characteristics of live object measurements. The last chapter of the theoretical part focuses on robotic systems and their use in dairy farming. The practical part deals with the use of thermal cameras for mastitis recognition in dairy cows. On average, 800 dairy cows were included in the experiment and the observed data were collected from May 2023 to March 2024. For data evaluation, udder thermograms from dairy cows with the highest and lowest somatic cell counts were selected and compared with each other and statistically evaluated. The results of the experiment showed that the FLIR E96 camera with better resolution had a higher cumulative success rate of 71,43 %, which can already be considered statistically significant. Cohen's Kappa has a value of 0,407, which indicates a good correlation. In the case of the E6 camera, the cumulative success rate of the evaluation was 57,43 %. Cohen's Kappa has a value of 0,132, indicating very little agreement.
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Synchronous scene recording with multiple cameras
Ladický, Milan ; Vičar, Tomáš (referee) ; Kolář, Radim (advisor)
This thesis provides a detailed description of the basic equipment for synchronous capture from two cameras. The cameras used are thoroughly characterized, and the principles of their usage in scene capturing are explained. Furthermore, the theory of image fusion is examined, with a specific focus on fusing color and grayscale images from a thermal camera. The main emphasis is placed on the software framework, which is extensively described from camera initialization and image acquisition processes to storing captured images, fusion calibration, and the actual creation of the resulting fused image. The architecture of the application and its surface logic are outlined, along with a discussion of the key libraries utilized in the program and their significance for the entire process. This work establishes a stable software foundation for developing a program that enables synchronous capture and fusion of resulting images, thereby opening up new possibilities for image processing and analysis
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Thermography in engineering
Koten, Jakub ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
This work deals with non-contact measurement of surface temperatures. The aim of the first part is to explain basic terms, principles and ways of measuring temperature. Furthermore, there is an overview of thermal imagining cameras usable in industry. In the practical part there is a theoretically suggested experiment, which monitors the dependence of the surface temperature on the size of the cross-section of the workpiece during the turning under unchanged cutting conditions. Experimental measurements are executed with using thermocamera ThermaCAM SC 200 and they are evaluated in software called Researcher.
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Experimental thermocamera measurements
Jakl, Oldřich ; Číp, Pavel (referee) ; Petyovský, Petr (advisor)
This work is focused on the features and the principles of the measuring of the thermovision cameras. There is the identification of the basic notions and physical laws on which is based the operation of the thermovision cameras in the first part of my work. In the second part there is describtion of the function of the detectors of infrared radiation and the character of the output data of the thermovision camera. Further there are presented the experiments and the observations which bring us closer to the features of the thermovision cameras and help us interpret the data gained by camera.
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Workstation with termo camera
Zeman, Martin ; Horák, Karel (referee) ; Richter, Miloslav (advisor)
This thesis contains an overview of physical principles concerning thermography and infra-red sensing, and a specification of a measuring instrument in a measurement system. Next, there are some particular examples of IR sensing applications. In the second part there is a thermal camera market research including individual manufacturers and models with their attributes and prices. There is a closer view of the thermal camera used for this thesis (Guide EasIR-4). In the end of the thesis there are some drafts of computer vision subject tasks (or practices), including workplace designs and solutions, and three task suggestions for bachelor or diploma theses including solution verifications.
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Optimalisation of thermal properties of solar cell modules
Dohnalová, Lenka ; Matiašovský, Peter (referee) ; Zmeškal, Oldřich (advisor)
The topic of presented diploma thesis is study of thermal properties structures of photovoltaic cells. The main goal of this thesis is study of ways of heat spreading from volume and planar materials (conduction, convection and radiation). Then it is needed to determine contributions of heat spread from laminated photovoltaic cell and compare them to results measured by transient pulse method, step wise method and with thermo-camera using. At the beginning of this thesis it will be needed to define heat and ways it’s spread. Heat is closely connected with temperature. That is reason why will be there spoken about temperature and methods of its measuring. Than there will be defined basic thermo-physical parameters of materials. Thermo-physical parameters of materials will be measured by transient methods that will be characterized later and by thermo-camera. This thesis deals with photovoltaic cells, so there will be described their structure, properties, utilization and way of their production. Subsequently after the definition of all needed terms the experimental part of this thesis will be introduced. It will be needed to characterize measured volume material and define its thermo-physical parameters. Using the pulse transient method, step wise method and thermo-camera there will be measured the thermal response of PMMA sample, nonlaminated photovoltaic cell and also samples of laminated photovoltaic cells. Findings of all described methods will be finally compared.
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IR camera data processing
Malík, Dalibor ; Petyovský, Petr (referee) ; Richter, Miloslav (advisor)
The aim of this master’s thesis is to give information about the thermo camera measurement with error minimization. The basic concepts of thermography are explained with an implementation of postprocesing technique which uses graphically modified thermogram back projected to the scene. This is closely related to the scene design, calibration of thermal camera with projector, image rectification, thermogram processing with highlighting of interesting information and implementation of control elements as the user interface. The results obtained are analyzed and re-evaluated.
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Emisivity and its Impact on the Heat Conductivity
Gančev, Jan ; Hejátková, Edita (referee) ; Szendiuch, Ivan (advisor)
This work deals with the issue of emissivity and its impact on the heat dissipation.The first part describes the basics of thermal management, the issue of emissivity and its measurement. In the second, experimental part, are dedicated the emissivity values of examined specimens. These values are then used as initial conditions for the thermal simulation. In the last part are compared the measured results and the simulated results and is evaluated the impact of emissivity for the heat dissipation.
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