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Electronic thermometer
Kostka, Vladislav ; Šilhavý, Pavel (referee) ; Lattenberg, Ivo (advisor)
This semestral project contains of different processes of temperature measuring procedure. Analyze every single method and sensor and points out advantages and disadvantages of each of it. Describes connection of electrical thermometer and regulation of heat controled by microprocessor ATMEL.
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RDS-TMC signal processing
Plch, Jan ; Kubánek, David (referee) ; Lattenberg, Ivo (advisor)
At the begining of my work is discourse about basic quality signal RDS, that is transmission by the help of radio signal. Described is way encoding, division to the groups as well as internal rules insider and per informative and preventive part block. Follows description obligatory content of all groups as well as description their content according to insider and version. Next chapter is devoted detailed description content groups news TMC which contain traffic and travelling informations . Described is basic space exploited for track telling. Follows explication obligatory part message and show transmission identifiers on data that are painted user. After it are circumscribed next optional data and their fission to the caregory. Mentioned are also possibilities fission broadcast messages on single-group or multi-gropup and their following management in acceptor. Final part work paies description activities created application servant for signal processing RDS-TMC with explication concurrence and functionality single function.
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Electronic thermometer and humidity meter
Lapáček, Petr ; Chmelař, Milan (referee) ; Lattenberg, Ivo (advisor)
This master´s thesis deals with the design of measuring station used for the temperature and humidity measurement. There is a theoretical basical description of sensores for temperature and humidity measurement in the first part. Furthermore I deal with a theoretical design of measuring system, especially with types of materials and possibilities of communication between these parts. The main part of thesis is about communication on buses I2C,UART, SPI, RS485. There is a description of function procedure of particular integrated circuit, moduluses which are used in task in the next part of thesis.In the practical part I was engaged in a functional design of autonomous system for the temperature and ralative humidity measurement. Data could be presented by the computer after connection with the station. There is a description of testing the particular circuits and the full description of function particular blocks of system in the task. I have used the program called Eagle for schemes and printed wirings designing. The copy is placed on CD ready for next using. In the last part of thesis is a brief description of program algorithm "Meteostanice", which I have created for data presentation. There is an illustration of measuring results in these last part. The task is completely ready for the realization of autonomous system of weather station with its own memory.
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Electronically controllable frequency filters with current active elements
Suchánek, Tomáš ; Lattenberg, Ivo (referee) ; Kubánek, David (advisor)
The aim of the thesis is to study the possibilities of the electronic frequency ?lter com- posed of active elements operating in current mode. The main opportunities lie in the change control parameters, most are marginal or quality factor frequency. As the active elements are considered especially CC (Current Convejor), controllable current ampli?er DACA (Digitally Adjustable Current Ampli?er) or combination with the current tracker MO-CF (Multiple Output Current Follower). Another part will focus on the management of the above parameters using digital potentiometers and choosing the appropriate ?lter structure. The ?nal task was to digital control parameters using a PC and measuring its properties.
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Frequency filters with difference current amplifier
Jirounek, Matěj ; Lattenberg, Ivo (referee) ; Vrba, Kamil (advisor)
This master´s thesis deals with the differential filters working in the current mode. It is dealt with the design methodologies of these filters and conversion circuits from voltage to current mode. Own work deals with 4 types of differential participation of structures. In this work there has been used programs SNAP and OrCAD. These programs were used for simulations of filters to proposed proper design. Results from this thesis is showed by graphs.
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Control of graphic OLED display with Atmel microcontroller
Bartošík, Vladislav ; Lattenberg, Ivo (referee) ; Hanák, Pavel (advisor)
This Master's thesis deals with design and a realisation of a device controlling an OLED display, Densitron DD-25664-1A. This display has a resolution of 256 x 64 pixels and allows displaying of 4-bit grayscale. The proposed utility software implements the initialization and termination functions, two sets of fonts { Latin and Greek letters and functions for rendering graphics and text. The result of the project is a device with the controlling software.
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Mandatory access control policies of operating system
Novotný, Filip ; Lattenberg, Ivo (referee) ; Pelka, Tomáš (advisor)
The subject of this paper is data protection by means access control. It compares the difference between DAC and MAC access control and describes the progress of MAC due to user requierements. Next part is dedicated to SELinux, what offers more system safeness. SELinux is based on mandatory access control. Making own policy is dedicated to SELinux editor, which is composed of Simplified Policy and is easy to use for ordinary user.
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Universal diagnostic device for accumulators
Němec, Filip ; Lattenberg, Ivo (referee) ; Balík, Miroslav (advisor)
Firstly, this bachelor thesis handles the issues concerning NiCD and NiMh batteries and methods used when charging and discharging. Next segment of the document deals with designing and the actual realization of a device, which can work with these batteries and perform variable tasks,such as charging and discharging battery with adjustable current value, measuring temperature of the battery. Sending data via the serial port,it also implements charging and discharging curve. Device can be operated intuitively using buttons and display. The Device is realized via microcontroller ATMEL.
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