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Module of Digital Inputs with Modbus Communication
Nožka, Tomáš ; Štohl, Radek (referee) ; Bradáč, Zdeněk (advisor)
Bachelor’s thesis deals with the basic specification of Modbus protocol and its use for communication between the remote digital inputs device module and device that uses information obtained from remote inputs. The thesis proposal is to further describe hardware and software for the module. Processor i8051 series provides the function of the whole procedure. Unit acts as a slave device. Communication with the remote device is done via serial interface (RS-485 and RS-232) using one of two modes of communication either Modbus RTU or Modbus ASCII. Primarily information on the status of digital inputs are being provided to the remote devices. The work also includes information about some professional modules of inputs and outputs communicating via Modbus protocol.
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Module of Analog Inputs with Modbus Communication
Stehno, Tomáš ; Fiedler, Petr (referee) ; Bradáč, Zdeněk (advisor)
This thesis contains the theoretical material needed for practical implementation and design of the Module analog inputs with Modbus communication. The theoretical part describes the Modbus protocol, the shape of the transmitted messages and the implementation of the different types of networks. The practical part deals with his own proposal for equipment and design of the software microprocessor. Hardware part describes the involvement of individual blocks of the product. Software section explains the function of the program.
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Battery powered datalogger with CPU
Andrýs, Jiří ; Beran, Jan (referee) ; Bradáč, Zdeněk (advisor)
In this design are mentioned processes of power consumption reduction of battery-powered devices.Execution of a project is software SPI for MMC card and file system FAT16 without extension of VFAT (Virtual File Allocation Table) – LFN (Long File Names). Hardware design consists of boost power supply, linear stabilizer, external RTC (Real Time Clock), IRQ low power modul, interface for MMC (Multi Media Card) and circuits for RS-232, RS-485. There is either a design of analog measuring interface.
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Meassuring system for building constructions
Vladař, Martin ; Franek, Lešek (referee) ; Bradáč, Zdeněk (advisor)
This thesis deals with the measurement of physical quantities in building using decentralized system for data collecting. The system consists of Raspberry Pi as a master device of the system. There are three branches connected to this master device. Each branch consists of up to 32 modules for data-concentration from sensors of physical quantities. The Raspberry Pi has implemented web interface for displaying measured values and system administration.
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Position system design
Balogh, Jaroslav ; Čížek, Martin (referee) ; Čech, Petr (advisor)
The purpose of this diploma thesis was to explore possibilities, design and build 2D position system driven by PC via USB. ATmega16 and FT232R were used as the most important parts of hardware solution. Software for control of the position system was designed in C++ Builder and it can run under MS Windows XP. This work is based on semestral thesis and in future can be used in other applications or modified. 2D position system will be later used by UBMI in education and scientific applications.
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Intelligent lightning system
Harman, Ján ; Šír, Michal (referee) ; Bradáč, Zdeněk (advisor)
The aim of my master’s thesis is a system for control of the light intensity. It is electronic equipment which controls the intensity of the light circuits based on settings and input signals. This equipment could work on single-phase systems or multiphase systems. The equipment is controlled by the signal DMX-512 which is a standard for the control of lighting technologies. The set up of this equipment is based on a personal computer or in a limited form by a small connected display.
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SWR and HF power monitor
Gajdušek, Miroslav ; Blansko), (Metra (referee) ; Šebesta, Jiří (advisor)
This work deals with analysis methods continuous measuring systems for measurement standing wave ratio and high frequency power. Reflectometr, provision measuring standing wawe ratio, works in range frequence VHF (145 MHz, 443 MHz), for this width working frequence is used construction reflectometer with directive lead. Measurer HF power works into range 1kW. Further is in work go through problems communications bus for transmission data from unit monitor SWR a HF power into score modulus. With regard to high frequency interference is choice serial communication RS-485 , which is immune against disturbance. Further is designed evaluation unit MASTER, unit SLAVE and modules for measurement power and SWR. In finish is build up the firmware for units.
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Converter USB/RS 485
Henzl, Václav ; Hanák, Pavel (referee) ; Herman, Ivo (advisor)
This thesis is describing problematic of realisation of converter from USB type media into the universal RS-485 bus which is mainly used for the industrial applications (author is using frequently as a device in order to enable communication between server and RFID devices). This thesis contains theoretical information, realisation of the device itself and assesment of reached targets.
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Design of humanoid racing robot
Zajíc, Jiří ; Marada, Tomáš (referee) ; Věchet, Stanislav (advisor)
Thesis deals with the selection and preparation of robot for competition RoboCup HumaoidLeague. As a basis for robot is used Robotis Bioloid Kit. The kit is extended with a new control unit Roboard-100, rotation and acceleration sensor, a webcam, and Li-Pol batteries. Furthermore, it examined communications between servo drives and designed signal converter from the USB to Dynamixel bus. Its functionality is then tested on the basic control programs.
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