|
| |
|
|
Modular Active Crossover Network - Laboratory Tool
Holínský, Jan ; Hanák, Pavel (referee) ; Balík, Miroslav (advisor)
This thesis is about design of active frequency crossovers and their implementation. The work analyses particular types of circuits used in active frequency crossovers, especially circuits used for laboratory device. Then the work describes design of printed circuit boards (PCB) for the designed circuits and construction of modules for the laboratory device, when the compatibility and modularity is important for all active frequency crossovers arts. These modules are made and testing its functions. In this thesis is disassembled final proposal laboratory device and laboratory device is realized. The design and measurement of the characteristics of active frequency crossovers and correction circuits is processed in the form of a laboratory tasks.
|
|
|
The heartbeat counter
Malínský, Zdeněk ; Dlouhý, Jiří (referee) ; Švrček, Martin (advisor)
Heart rate variability belongs to basic and most frequently interpretation of physiologic statement in medicine. The pulse rate serves as an indicator of the heart activity. The subject of this diploma thesis is projection of the heartbeat counter. The work describes electrocardiograph and separated waves, ways of calculation heart rate, characteristics mechanism for measuring and other necessary information about heart rate measuring. This master thesis fixates on heart rate-calculation from including R-R intervals. Here is described whole project of heartbeat counter, properties of separated blocks and calculation of useful parameters. Further there is noted software resolution for the microcontroller and program for the calculation of heart rate frequency including unwinding signal preprocessing and detection of separated QRS complexes. The products of this diploma thesis are the circuit including the board circuit and codes of separated programs.
|
|
|
Modern active elements and their behavior in linear circuit blocks
Kosztyu, Tomáš ; Jeřábek, Jan (referee) ; Koton, Jaroslav (advisor)
The topic of this master’s thesis was a frequency filters and their realization using modern active elements like UVC, UCC, VFA, CFA and OTA. The base point of this thesis was designed frequency filters with these active elements, when the shape of the transfer function will be identical for all structures and compare the characteristics of active elements. The proposed frequency filters are second order with one or two active elements. In the first part of thesis are discussed basic properties of frequency filters, their properties and distribution. Next are described the general characteristics of active filters and their basic elements such as operational amplifier OTA, VFA and CFA, and recently more frequently used voltage and current conveyor. The second part is the frequency filters designed with these elements is the same transfer function. Subsequently, simulations are done all the filters and obtained the frequency response. Finally, these filters are experimentally made and made practical measurements.
|
|
|
Modem -repeater for narrow band technology of PLC
Novák, Michal ; Mlýnek, Petr (referee) ; Mišurec, Jiří (advisor)
This semestral thesis focuses on the circuit design of the repeater for PLC communication in order to achieve greater distance in communication. It can also serve as a bridge for a separate modem device power grid. In this work we discuss the involvement of individual assembly parts repeater and proposed method of connection.
|
|
|
Intensive care unit air conditioning
Dobrovolná, Natálie ; Uher, Pavel (referee) ; Rubina, Aleš (advisor)
The bachelor's thesis deals with the ventilation system serving hospital premises. The system is divided into two separate functional units. Facility No. 1 serves the ICU (Intensive Care Unit) department and its associated premises. Facility No. 2 serves the facilities of employees, doctors' rooms and associated premises. The design of the equipment meets the relevant standards, hygiene standards and operational requirements. The calculation part deals with the design of air conditioning in the ICU, it deals with the overall analysis of both functional units, heat gains, heat loss, air flows, pressure drops in both functional units and other proposals necessary for the design and proper operation of the air conditioning system. This part is also focused on the distribution and treatment of fresh air. The theoretical part deals with clean rooms, their definition and distribution of air supplied to these rooms. The theoretical part also deals with the installation of operating theaters, images of flow in these areas and their internal microclimate.
|
|
|
Design, simulation and measurement of active filters with modern functional blocks
Melša, Vojtěch ; Petržela, Jiří (referee) ; Brančík, Lubomír (advisor)
This work concentrates on the possibilities of how to connect electric filters with functional blocks. Then we choose the best possible connections and their characteristics are simulated in the Pspice program. From the comparison of the results of simulation, possibilities of tuning, quantity of functions, complicacy of connections and mainly by commercially available integrated circuits is chosen the connection which is realized in a laboratory preparation form. Its measured characteristics are compared with results of simulation
|
|
| |
|
|
Air conditioning of a multifunctional building
Čížek, Vítězslav ; Uher, Pavel (referee) ; Rubina, Aleš (advisor)
This bachelor´s thesis deals with an air conditioning system that serves for warm air heating and ventilation of a multifunctional building. The systém consists of two functional units. The first part will be operated by devices no. 1, 3 a 4, which provide warm air heating and ventilation for the spaces of the playing courts. The second part will be operated by device no. 2, and will serve for warm air ventilation of the facilities for the playing courts. The theoretical part of the thesis focuses on heat recovery systems in air conditioning. In the calculation part, the thesis deals with the design of warm air heating and ventilation, as well as the overal analysis of the both functional units, including the calculation of heat losses, heat gains, air flow rate, and pressure drops. The necessary proposals for the proper functioning of the entire air conditioning system, including the distribution and conditioning of air, are provided.
|
|
|
Intensive care unit air conditioning
Dobrovolná, Natálie ; Uher, Pavel (referee) ; Rubina, Aleš (advisor)
The bachelor's thesis deals with the ventilation system serving hospital premises. The system is divided into two separate functional units. Facility No. 1 serves the ICU (Intensive Care Unit) department and its associated premises. Facility No. 2 serves the facilities of employees, doctors' rooms and associated premises. The design of the equipment meets the relevant standards, hygiene standards and operational requirements. The calculation part deals with the design of air conditioning in the ICU, it deals with the overall analysis of both functional units, heat gains, heat loss, air flows, pressure drops in both functional units and other proposals necessary for the design and proper operation of the air conditioning system. This part is also focused on the distribution and treatment of fresh air. The theoretical part deals with clean rooms, their definition and distribution of air supplied to these rooms. The theoretical part also deals with the installation of operating theaters, images of flow in these areas and their internal microclimate.
|
guest ::
