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Smart Home Control System
Ševčík, Radek ; Fučík, Otto (referee) ; Maršík, Lukáš (advisor)
This bachelor thesis deals with unconventional solutions in the field of home automation systems such as the central unit consisting of a miniature computer. The work includes architecture design, visualisation and control of such system
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Automatic control of the gate
Harman, Ján ; Šebesta, Jiří (referee) ; Frýza, Tomáš (advisor)
The aim of my bachelor’s thesis is a automatic control of the ventilation gate. It is electronic equipment which opens and closes gate depending on input signal. The gate is driven by electromotor. Thi equipment can serve as stand alone or as a component in the bigger system controlled by computer.
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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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Module of Analog Outputs with Modbus Communication
Neuwirth, Tomáš ; Fiedler, Petr (referee) ; Bradáč, Zdeněk (advisor)
The aim of this bachelor´s thesis is the creation of analog output module with Modbus interface. From Sketch diagram connections, printed circuit boards to the software throughout the module. The device fulfills demands for simple and rapid implementation in industrial environments with possibility to choose a communication bus and some protection against damage. In the introduction and in the first part of the work are described all the theoretical properties, principles and options, which has a MODBUS protocol. Following part of the document points to some products which work by using of this interface. Mainly describes the principles and characteristics of these modules. In the fourth section is described the design of the module. It is focused on the functional description of sub-circuits, with their theoretical properties and the actual wiring in the circuit. In the last part of the work are described separate steps of the programme process.
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Module of Digital Outputs with Modbus Communication
Vaško, Pavel ; Štohl, Radek (referee) ; Bradáč, Zdeněk (advisor)
Goal of mine bachelor’s thesis is create functional module of digital outputs, which can be seen in typical industry using. This module must contain communication interface on protocol Modbus and standard communication bus RS-232, RS-485. The module must be equipped with microcontroller series x51. Size of equipment must be minimalized into the smallest proportion. One part of the thesis is focused on theoretic information about Modbus protocol. Next parts contain charakteristics of communication and software facility.
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Terminal for testing of data communication of public transport vehicles
Fiala, Michal ; Holek, Radovan (referee) ; Macho, Tomáš (advisor)
This term paper deals with subject of wireless communication of city rail transport cars. In this paper are described individual modules for transmission and receiving of data containing communication between city rail transport cars and measures of siding switches. Then there are discussed possibilities of design of system for testing functionality of transmitting and receiving modules and the system is consequently designed. There are also described communication principles and protocol used for wireless communication and MODBUS protocol used for communication over RS-485 serial line. In the end was the system manufactured, completed and equipped with necessary software.
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Systems of protection and remote control of medium voltage substation with using protection with communication Profibus and IEC61850
Tesařík, Jan ; Fazekaš, Tibor (referee) ; Huzlík, Rostislav (advisor)
This Diploma thesis deals with the system for protection and remote control for MV switchgear by using protection relays with communication protocols PROFIBUS and IEC61850. The first part represents a theoretical introduction to points at issue. In the first part, the reader will get conceived with the communication standard IEC61850 and its typical architecture for MV switchgear, and also with data model based on this standard. Second part discusses the PROFIBUS communication protocol. In this part, the reader can acquire information about transmit technology and communication protocol for PROFIBUS. Last part of this theoretical chapter contains an overview on the MODBUS communication. The second part deals with the description of protection relays, which were used for the purposes of this thesis. In the first subchapter, the reader can learn about the REM620 from ABB Company, its configuration and cooperation with IEC61850 standard. Second subchapter describes the HMS Anybus communication converter. The reader will get further knowledge about description of this device and how to configure the communication protocols. In last subchapter, a description of protection relay SIPROTEC 7SJ64 produced by Siemens company is explained. With the third part starts the practical work within this thesis with protection relays. This chapter is divided into two parts; each describes different system with using the protection relays. First system contains ABB REM620 relay and HMS Anybus converter. By converting MODBUS protocol with the Anybus converter, the REM620 can be connected to PROFIBUS network. This part includes the configuration of REM620 and Anybus converter, the engineering of MODBUS and PROFIBUS protocols and testing various signals in those networks. The second system contains Siemens SIPROTEC 7SJ64 and ethernet switch. This subchapter deals with the preparation of configuration for SIPROTEC 7SJ64 and the engineering for IEC61850 communication. This part finishes with the comparing of both systems on the engineering bases. The last part of this thesis is about working with the LabVIEW instrument. Within this part, the software emulation of protection relay was made. The program offers to the user the possibility of setting input parameters as the effective values of current and voltage, the frequency and the current phase shift. Also the user can set the thresholds for protection functions, such as the Overcurrent, the Voltage and the Frequency protection. As last one, the Phase unbalance protection for the current phases is present.
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Ni sensors to Ethernet convertor
Kubíček, Ondřej ; Fiedler, Petr (referee) ; Bradáč, Zdeněk (advisor)
This work deals with hardware and software solution for the temperature converter of the standard rezistance temperature Ni sensors with the output through the Ethernet, driven by the Rabbit microcontroller. First part of this thesis deals with the theory of the temperature measurement. There are introduced basic principles of the temperature sensors. In the next part of the work are introduced communication standard and application protocol Modbus. The rest of the work deals with the hardware concept of the converter, the control program of the converter and the program developed for the PC.
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Analog 0-20mA to Ethernet convertor
Štreit, Zdeněk ; Štohl, Radek (referee) ; Bradáč, Zdeněk (advisor)
The dissertation deals with a design of an intelligent transmitter of a standard current signal with an Ethernet output port, an implementation of a web interface and Modbus TCP protocol for providing data protection. The introductory part describes standardized analogue technical signals with their possibilities, and characteristics of industrial Ethernet. The subsequent part provides an overview of alternatives to connect analogue signals to Ethernet while using various modules. The thesis continues with a suggestion of an analogue input side of the transmitter in connection with a digital module of Ethernet based on the Rabbit processor in connection with the RCM3200 module. The key part of the dissertation puts forward a proposal of the firmware transmitter and control web interface, shows ways of providing figures measured by the current loop via Ethernet interface for further processing. The final part is devoted to a description of current transmitter ultimate measurement.
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Analysis of distributed control protocols for indistrial applications
Horych, Vladimír ; Zezula, Radek (referee) ; Koutný, Martin (advisor)
This master's thesis deals with distributed control protocols for industrial applications. It explains term distributed control system, control protocol and it is dealing with properties, frame structures and ways of communication within CAN, Modbus, IEC60870-5-101 and DLMS protocols. This thesis includes informations, which are in most cases difficult to find. Second part of the thesis is dedicated to education system. This part is contained by information about protocols and their layers based on ISO/OSI model, pictures of structure of messages, knowledge test and an application based on JavaScript language. This JavaScript application emulates behavior of workstations, which are using communication based on IEC 60870-5-101 protocol. This application can set various conditions for influence of message transfer. These conditions are setting way of message transfer, data availability, filling of workstation’s buffer or intentional damage of message's content. It also contains a large amount of context help, activated after moving mouse cursor over most of application's elements. Even visitor without great knowledge of distributed control systems should understand how this protocol works, thanks to these context help and messages printed in lower part of the application. The conclusion of this work is aimed to positive and negative features and comparison of mentioned control protocols.
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