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Audio Saving Module
Strašil, Ivo ; Kouřil, Jiří (referee) ; Říha, Kamil (advisor)
The aim of this thesis was to design and construct an autonomous, hardware voice recorder/player module. The device is made as a compact, built-in component for a motherboard of a target appliance. During recording, the incoming analog voice signal is converted to a digital stream by an ADC with 16 bits resolution and 24 kHz sample rate. Microcontroller LPC2103 (ARM7TDMI core) processes data, recalculates resolution and sample rate, encodes and converts to WAV format and save into a FAT/FAT32 filesystem on a Secure Digital memory card. At playback, the process is opposite: the microcontroller reads file from the memory card, decodes the stream and sends it to a DAC and then to a reconstruction filter. So there is an analog voice signal at the output again. The firmware allows control by logic inputs or by a serial bus, processing of uncompressed WAV files or WAV files with A-law or IMA ADPCM compression, continual recording including automatic freeing of card space by deleting the oldest records and a usage of a voice emphasis filter or of a signal dynamic compression circuit.
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Memory-Card Reader
Rumplík, Michal ; Mikušek, Petr (referee) ; Strnadel, Josef (advisor)
This work deals with problems of SD memory card reader and its working principles. I have focused in my bachelor's thesis on proposition and construction of memory-card reader. This memory-card reader is able to store and read ASCII signs. The hardware was proposed for serial interface communication and it is geared by microcontroller MC9S08QG8.
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Prototype of Outdoor Computer on STM32VL Discovery Platform
Leštach, Marek ; Orság, Filip (referee) ; Novotný, Tomáš (advisor)
This thesis focuses on describing of an outdoor computer prototype based on STM32VL Discovery platform and building it on the prototyping board. Prototype is able to locate itself with the help of GPS module and received data are recorded into connected MMC card formatted with the FAT filesystem. Information and trip statistics are displayed on a graphic display. Data on memory card are saved in NMEA-0183 format provided by the GPS module in order to be used with a map software on PC.
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The Sport Activity Digital Recorder
Raninec, Michal ; Žák, Jaromír (referee) ; Macháň, Ladislav (advisor)
This paper discuss the design of multifunctional device used as the digital recorder for sport activity. The general aim is to explore theory issues, construct the device and develope software for the application. Components were chosen considering low weight and power consumption and with as accurate tracking as possible.
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Development localization board
Szabó, Michal ; Novotný, Radovan (referee) ; Levek, Vladimír (advisor)
This document describes a device capable to determine geographical position thanks to its GNSS module and measure the change of movement with the help of an accelerometer and gyroscope. Outputs of these integrated circuits are combined, data are processed and fused thanks to a numerical integration and mathematical filters. Results are stored on a memory card. The whole development is described from a concept, through the making of the device and software algorithms to the testing of its functions.
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Ways of Using Digital Tachograf Data for Authorised Experts' Work
Zeman, Petr ; Novotný, Jiří (referee) ; Libertín, Josef (advisor)
The introduction of digital tachographs has brought many changes compared to previously used analogue tachograph. Legislation addressing this issue is quite extensive and often amended. Ever-present threat of industrial equipment, which affect the observed, and the stored data has a negative impact on road safety. The aim of this paper is to present a comprehensive overview of legislation regulating the issue of digital tachographs in relation to the introduction and use of digital tachographs, with obligations to use a tachograph, tachograph functional requirements. Process further review of data on vehicle operation recorded with a digital tachograph and analyze their availability in terms of approval of the different actors (the driver, carrier, service, police, other supervisory authorities). Contribution of this work is the elaboration of recommendations for the expert's methodology in analyzing data from the digital tachograph.
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Using of SD Memory Card for FITkit Platform
Gazda, Martin ; Slaný, Karel (referee) ; Vašíček, Zdeněk (advisor)
Reconfigurable hardware architectures represent a modern trend in development of new circuits. A lot of embedded systems is used as mobile devices with high demands on data capacity and power consumption of peripheral devices. This demands are suited with FLASH based memory, like SecureDigital memory card. This bachelors thesis deals with the problem of usage of this memory card on FITkit development platform.
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Connecting SD Memory Card to Microcontroller
Laurinc, Pavel ; Kubek, Ján (referee) ; Škarvada, Jaroslav (advisor)
Author concerns with SD memory cards and microcontroller Atmel ATmega128. He describes their architecture, features, properties and technology used in devices. He is mentioning principle of communication protocols used by SD card, through that cards can communicate with other connected devices. He analyzes the functionality of FAT file system. He describes the design and implementation of interfaces to connect the SD cards to microcontroller. He explains software solutions of this project and gives impartial view to usage and comparisons of implemented modes of communication witch card.
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Development localization board
Szabó, Michal ; Novotný, Radovan (referee) ; Levek, Vladimír (advisor)
This document describes a device capable to determine geographical position thanks to its GNSS module and measure the change of movement with the help of an accelerometer and gyroscope. Outputs of these integrated circuits are combined, data are processed and fused thanks to a numerical integration and mathematical filters. Results are stored on a memory card. The whole development is described from a concept, through the making of the device and software algorithms to the testing of its functions.
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