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Measurement of process variable – pressure
Kouba, Martin ; Hammer, Miloš (referee) ; Konečný, Antonín (advisor)
The measurement of the process quantity of pressure is an important element and condition of the functionality of many industrial applications, especially in the environment of commodity production, transport, pharmacy, food industry and many others. In practise, there are many pressure measurement methods that are applied in different environments and conditions. The choice of measuring equipment depends on many factors, such as the measurement range, environment, sensitivity, response speed, or environmental resistance. The correct procedure in their calibration and determination of measurement uncertainties increase the credibility of the measurement results. The means of data transfer in a modern concept make it possible to better secure and speed up the transfer of information in the measurement chain. All of the above-mentioned facts, in sequence and in relation to each other, fundamentally affect the resulting reliability and effectiveness of the measurement of the process quantity. The study of the measurement of the process quantity of pressure from a comprehensive point of view will allow us to analyse the individual elements of the measuring chain and their interconnection. The content of the thesis provides a basic orientation to the issue of pressure measurement and captures the main trends in individual areas.
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Methods of technical diagnostics - vibrodiagnostics
Soldán, Josef ; Hammer, Miloš (referee) ; Hájková, Alena (advisor)
The bachelor's thesis deals with technical diagnostics, especially vibrodiagnostics. The work first describes technical diagnostics in general, namely its means and methods, including vibrodiagnostics. The mentioned method is the focus of the presented bachelor's thesis, therefore its description forms the majority of the theoretical part. As part of this work, the vibrations of the electric motor were measured, which were subsequently evaluated according to the standard.
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Vibration analysis using modern online systems
Marek, Vojtěch ; Poliščuk, Radek (referee) ; Hammer, Miloš (advisor)
The diploma thesis solves the issue of vibration analysis using on-line systems. A model of a rotating machine was programmed for implementation, on which the data was subsequently measured. The solution was the analysis of experimental problems for the unbalance of the machine and the determination of the exact defect on the bearing. Different diagnostic methods and environments of the CMS X-Tools analysis application were used to obtain the results. The main result is a functional monitoring system that permanently monitors the condition of the machine and, if necessary, the operator is able to determine the exact failure of the device after analyzing the obtained data. By introducing on-line monitoring systems, major downtime and associated financial losses can be avoided.
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Modern approaches to maintenance in engineering practice
Jiroušek, Lukáš ; Konečný, Antonín (referee) ; Hammer, Miloš (advisor)
The thesis deals with maintenance and implementation of modern maintenance approaches in engineering practice. The present thesis focuses on Total Productive Maintenance (TPM). The first part of the thesis defines the general characteristics of maintenance, its division, including an analysis of maintenance types. In the context of maintenance according to the technical condition, the methods of technical diagnostics such as vibrodiagnostics, thermodiagnostics, tribodiagnostics and acoustic diagnostics are also introduced. The second part of the thesis focuses on the philosophy and description of Total Productive Maintenance (TPM) including the individual pillars and the evaluation of Overall Equipment Effectiveness (OEE). The third part deals with the actual practical implementation of TPM at Schaeffler Production CZ s.r.o, with emphasis on autonomous maintenance, e-maintenance and the 7S concept. The final part of the thesis summarizes the benefits and advantages that can be observed by implementing the TPM method in Schaeffler Production CZ s.r.o.
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Environmental Sensor for succulent plants
Horčička, Vít ; Hammer, Miloš (referee) ; Šoustek, Petr (advisor)
The aim of this thesis is to perform a research in the field of environmental sensors for plants, to get acquainted with the Arduino platform and to create a custom sensor design for plant care. The proposed solution is capable of monitoring ambient air temperature and humidity, soil moisture and light intensity. The measured values, along with the battery voltage, are sent via Wi-Fi to the InfluxDB database to be displayed in the Grafana environment.
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Reengineering of the maintenance system of variable speed drives using multi-parameter diagnostics
Nahodil, Petr ; Helebrant, František (referee) ; Pačaiová, Hana (referee) ; Hammer, Miloš (advisor)
The work is focused on multiparametric diagnostics, which is an important part of machine and equipment maintenance today. It deals with the use of fields such as vibrodiagnostics, electrodiagnostics, thermodiagnostics, tribodiagnostics, assembly and optical measurements as well as other diagnostic methods in order to obtain a complete picture of the monitored devices. The work also discusses the modern procedure of using multiparametric diagnostics to identify the causes of problems and define appropriate measures in the framework of maintenance. The dissertation is based specifically on the implementation of multiparametric diagnostics in the operability of drives with variable speeds and justifies the necessary reengineering of the maintenance system for these devices. The given maintenance system will clearly require a change in the inspection activity primarily in terms of quality, but certainly also quantitative verification and validation of the measured data in situ, an adequate change in the documentation processed by the manufacturer, or by the supplier, conducted by the user, etc. The work itself is based on the basic idea that if I can measure and diagnose something, then I can declare that I know something about it.
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Automation of family houses (smart home system)
Koníček, Tomáš ; Nahodil, Petr (referee) ; Hammer, Miloš (advisor)
The bachelor’s thesis addressed the issue of smart home technology. The aim was to create researches of existing smart home control systems, generaly describe the individual parts and their funcions and choose one control systém which will be described more in depth. We weill also lay down a real situation draft of smart home aplication. The chosen systém is american systém Crestron. The thesis i salso about a comunication protocols ordinarily used in smart homes. At the end we will also discuss an economical viewpoint of smart homes followed by recommendation and conclusion.
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House wiring
Pospíšil, Filip ; Nahodil, Petr (referee) ; Hammer, Miloš (advisor)
The bachelor's thesis addressed the issue of home wiring. The aim was to select the electrical installation, describe its properties and analyze the design in a specific building. An electrical installation, with intelligent home elements from HDL Automation Ltd. Company, was chosen, namely the HDL Buspro system. The work was based on the currently valid legislation, the method of connecting a family house to the distribution network and the design of electrical installations. The thesis is supplemented by some electro technical and economic calculations, followed by an evaluation, discussion and conclusion.
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Methods of specification of cyberphysical systems
Junek, Martin ; Hammer, Miloš (referee) ; Lacko, Branislav (advisor)
The aim of this diploma thesis is to analyse the advantages and disadvantages of different types of description of cyberphysical systems. It also concerns a description of the selected method that meets most of the current requirements for CPS design. In the practical part, attention is paid to the elaboration of an example for the specification of a selected cyberphysical system.
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