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Relay output module for electronic tachograph
Feilhauer, Petr ; Sirka, Martin (referee) ; Zezulka, František (advisor)
This bachelor thesis contains detailed description of function and wiring current Electronic tachograph RE1xx from company UniControls-Tramex. For comparison there is mentioned description of competitor’s products from this branch. The part of this thesis is analysis of measurement actual speed on the train vehicles and analysis of imaging information to staff of vehicle. The base of this finding is making several projects about future way of development of this electronic tachograph. Main programmes of this thesis are design, implementation and verification functions of module relays outputs for Electronic tachograph RE1xx. Practically design must be satisfy with basic technical-law specifications, which refer of this branch for application this device. Thesis contains the description of single parts of scheme, control microcontroller, using of integrated circuits. Further thesis will contain theoretical calculations, design of main software and his implementation to the module. The aim of design and implementation of module relays outputs is evaluation reached outcomes from view technical solutions, functions and price statement of the module.
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Laboratory Measurements of Skin Conductance
Slouka, Petr ; Harabiš, Vratislav (referee) ; Sekora, Jiří (advisor)
This thesis contains an introduction to anatomy and physiology of the skin highlighting its barrier function. The barrier function of the skin enables it to separate internal organism from external environment. thermore, the electrical properties of the skin are described and possibilities of skin conductance measurement are discussed. The thesis presents a design of a device for the skin conductance measurement as the method of evaluation for barrier function. Alternating current is used for measurement during iontophoresis for evaluation of skin conductance. Circuit design and circuit board are included with a list of parts. The designed device was realized and in the end it was tested and the results were discussed.
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Six-channel audio preamplifier with common volume control
Spilka, Benedikt ; Balík, Miroslav (referee) ; Hanák, Pavel (advisor)
The main aim of this bachelor thesis is to design and to construct a low-frequency six-channel preamplifier with remote and local control and with symetric and line input for up DPA223 low-frequency amplifier. The preamplifiers must have galvanic separation together. Its gain/amplification must be remote controllable from mute to 0dB and locally from 0dB to -20dB. Low distortion, noise and other parameters monitored in audio technics are important for the design.
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High power traction converters
Žižka, Pavel ; Vorel, Pavel (referee) ; Patočka, Miroslav (advisor)
This master thesis is based on realization of the previous university project, design of locomotive reconstruction and solving accompanying problems. In this thesis there are described all parts of a converter. The end of thesis involved theory about driver circuits of power transistors IGBT. Nowadays is still more often to think about reconstruction of the old technology rather than design a complete new construction. Investors take this decision from the financial reasons and because to the old technology designer can add only the converter. In this instant we talk about electrical locomotive, there should be kept a supply transformer and a driving unit (DC engine). The aim of this thesis is to design the converter between these two basic parts. The converter must taking the quasi-sinusoidal current which is in the phase with the input voltage, also must be able to control the engine and recuperate energy back to the network. For realization of these conditions, the converter must contain the active rectifier working in the DC-link and from which the step-down DC/DC converter is fed. Converter output is connected to the driving unit. The digital control of the power transistors is provided by processor MOTOROLA DSP56F. The control impulses, switching the power transistors, go through the driver circuits to transistors. All problems are described in the following text.
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Laboratory stand for educational purpose
Forró, Barnabás ; Knobloch, Jan (referee) ; Červinka, Dalibor (advisor)
This semestral thesis contains proposition of driver with mosfet moduls, which are used in laboratory stand. In first part of project there are described properities and functions of driver modul. In another part I made a proposition of driver, that is used in stand and make a request against damage by unprofessional work. The second part of the bachelor thesis deals with the designed driver circuitary.
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Six-channel audio preamplifier with common volume control
Spilka, Benedikt ; Balík, Miroslav (referee) ; Hanák, Pavel (advisor)
The main aim of this bachelor thesis is to design and to construct a low-frequency six-channel preamplifier with remote and local control and with symetric and line input for up DPA223 low-frequency amplifier. The preamplifiers must have galvanic separation together. Its gain/amplification must be remote controllable from mute to 0dB and locally from 0dB to -20dB. Low distortion, noise and other parameters monitored in audio technics are important for the design.
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Laboratory stand for educational purpose
Forró, Barnabás ; Knobloch, Jan (referee) ; Červinka, Dalibor (advisor)
This semestral thesis contains proposition of driver with mosfet moduls, which are used in laboratory stand. In first part of project there are described properities and functions of driver modul. In another part I made a proposition of driver, that is used in stand and make a request against damage by unprofessional work. The second part of the bachelor thesis deals with the designed driver circuitary.
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Voltage sensor with a galvanic separation
Růžička, Zdeněk ; Klíma, Bohumil (referee) ; Huták, Petr (advisor)
This thesis finds suitable principled solving voltage sensor with a galvanic separation. Thesis designs circuit solving sensor in reference to parameters in singles parts sensor and parameters gauged circuit. Circuit design includes calculations for setting up circuit components. Next part describes design circuit wiring and realization on the desk of contacts field. Last part describes verify parameters and function checking member.
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