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High performance data acquisition communication line
Hadámek, Jakub ; Petyovský, Petr (referee) ; Valach, Soběslav (advisor)
The aim of this thesis is the acquisition of data from the AD converter and it’s transfer via the JESD204B interface to FPGA with the following transformation and transfer to PC through 100G Ethernet or PCI Express interface. The first part of the thesis is focused on the introduction to used technologies and hardware and analysis of the solution of this project. Second part of the thesis describes solution and it’s functionality. I created HDL design which allows to transfer data from AD converter using both of the interfaces mentioned above. I also created software application for OS Linux which allows to receive and store incoming data in PC. In the end, the results of the measurement using the converter board are presented and discussed.
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Design and realization of the measuring amplifier of mechanical quantities
Kaplan, Tomáš ; Chalupa, Jan (referee) ; Krejčí, Petr (advisor)
Subject of this effort is development and realization of one-channel data acquisition unit of mechanical quantities and it’s PC software application. Usage of this data acquisition unit is aimed on applications, where resistive strain gages wired as Wheatstone bridge with AC excitation are used. Output voltage of Wheatstone bridge is amplięed, demodulated with excitation voltage, filtered and level shifted for analog to digital conversion via AD converter. Converted digital data are sent via serial bus into microprocessor which sends them into PC for further meaningful representation in software application. Besides sensing bridge output voltage, data acquisition unit also generates AC excitation of Wheatstone bridge. This excitation voltage is generated via DA converter which communicates with microprocessor and converts incoming digital data into analog sine waveform. There is precise voltage reference circuitry for both of these converters. PC application’s task is to visualize measured data in meaningful form and to give tools for further work with measured data. It’s programmed in Python language and it has one independent thread which does reading and computing of incoming data and there is also class which builds graphical user interface and plots measured data into live graph.
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Temperature measurements with PT100 for aerospace applications
Závorka, Radek ; Dobesch, Aleš (referee) ; Kolka, Zdeněk (advisor)
This bachelor thesis deals with design of temperature measurement system, which is focused on aviation applications. The design emphasizes fulfilment of aviation standards, especially protection against voltage needle pulses and transient phenomena caused by lightning. Device must be resistant against electromagnetic interference. The core of equipment is AD converter with current source from Texas Instruments, which is suitable for connect different type of sensors. The whole system is controlled by microcontroller from ARM series. The measurement values are display on monitor of computer, which is connect by serial line.
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THD Analyzer
Ha, Tuan ; Drexler, Petr (referee) ; Mikulka, Jan (advisor)
This thesis deals with design of a THD analyzer for audio frequency. In the interduction, there is a description of methods of THD calculation and realization of THD analyzer. Suitable computing platform must be chosen with capability to process audio data. The expansion board is designed for audio acquisition. Part of this design is complete program that is capable of displaying spectrum and computing THD.
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Signal analyzer with FPGA
Kraus, Václav ; Bohrn, Marek (referee) ; Šteffan, Pavel (advisor)
The aim of this thesis is to study the possibilities of spectrum calculations, as well as data transfer via USB 3.0 and data saving to a DDR3 memory via FPGA. The focus is also on design and realization of a spectral analyzer with a record of samples to DDR memory expnaded by a narrowband converter using gate arrays. The work is divided into two sections, the first one dealing with the theoretical background. The second part denotes the realization of the design. The result of this work is a signal analyzer in a FPGA controlled from a computer application via the USB 3.0 interface.
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High speed acquisition system
Svoboda, Tomáš ; Kováč, Michal (referee) ; Kubíček, Michal (advisor)
This master's thesis is focused on the design of a highspeed aquizition system which is based on FPGA and a highspeed AD converter with modern JESD204B interface. Considering the requirements, such as high samplig rate, the current range of available devices is limited. Therefore the market overview of the modern IC and modules was made. The resulting design is based on available modules, so the rached sampling rate is up to 5 GSa/s with 12bits resolution. Data from measurement are send to PC via Ethernet which uses lwIp stack and TEMAC core on Microblaze proccessor.
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Design of a Sigma Delta AD converter for sensor applications
Pěček, Lukáš ; Prokop, Roman (referee) ; Kledrowetz, Vilém (advisor)
This diploma thesis deals with the design of a sigma delta AD converter for a sensor application of junction temperature measurement in the automotive environment. A modified continuous time current mode modulator structure was designed. Its advantage lies in shifting and extending an input voltage range to work with signals from 0 V to 1,2 with a high impedance input and a relatively low hardware complexity. The functionality was verified by a behavioral model in the Simulink environment and then by transistor level simulation in CADENCE environment using ONC18/I4T technology.
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Electronic load
Doležel, Jiří ; Vorel, Pavel (referee) ; Huták, Petr (advisor)
Bachelor’s thesis deals with the analysis solutions and construction of the DC electronic loads. At the beginning, they describe the basic principles of electronic loads. In other parts of the work is compared commercial electronic loads, under which the requirements will be selected on the proposed electronic load. In other chapters of the work devoted to the design of schemes and selecting components for their manufacture, including dimensioning of cooling power parts. The last chapters are devoted to describing the design and measurement of electronic load.
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Data aquisition card for integrated circuit tester
Koleček, Jan ; Pristach, Marián (referee) ; Dvořák, Vojtěch (advisor)
The goal of this bachelor's thesis is to design and realize a data acquisition card. The main task of the designed card will be to generate stimulating signals for the tested integrated circuit, to process signals generated by the tested integrated circuit, to convert them into a digital form and to send them to a superior system. The thesis will present a choice of integrated circuits suitable for its realization, a wiring diagram of the data acquisition card, PCB design and VHDL code for the control FPGA chip.
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Implementation of drivers for wireless sensor unit
František, Milan ; Šimek, Milan (referee) ; Botta, Miroslav (advisor)
This work is concerned with the use of digital and analog sensors with wireless unit IRIS. There is a basic description of the software stack BitCloud, including important functions with a used sensor types and used buses. In the work is described procedure for creating drivers for the various sensors and their implementation in a stack BitCloud. In conclusion of this work is a practical example of right implementing of the individual drivers.
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