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Communication standard IEC61850 for MV substation
Lednický, Pavel ; Majer, Karol (referee) ; Toman, Petr (advisor)
ABB s r.o. is one of the most important companies that are concerned with setting of trends in electro-energetic field. One of these trends is digitalization of medium voltage substations that leads to simplified of internal connection and easier connection of substation to the control system. This thesis deals possibilities of connection of communication, methods of controlling logical operations by centralized or distributed system and compares potential of these systems.
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Model of cleaning station for food processing technology controlled by a control system na PROFIBUS network.
Vyskočil, Jaromír ; Sobotka, Milan (referee) ; Pásek, Jan (advisor)
This bachelor’s thesis deals with design, realization and laboratory commissioning of the model of keg / tank cleaning station (CIP) in foodstuff industry. The model uses two cleaning liquids – water and lye. There are several different types of valves used in the CIP model. They serves for inlet and outlet of lye or water and for separation of the both liquids branches. The control system offers monitoring of pressure, volume flow, level of the lye, etc. The measuring devises mostly communicate with PLC via industrial net PROFIBUS-DP and PA. The same net PROFIBUS-DP also provides communication between PLC and distributed control system Festo (valve island). Configuration and set up of the Festo valve island is described in the thesis as well. Further the work presents processing of the analogue values from different transmitters and their representation in a operator panel. Operator panel (OP) serves for control and visualization of the cleaning station. The OP configuration, the screens structure and the full functionality in the CIP station is explained. The individual screen description is incorporated as well. There are three modes of control – manual, semiautomatic and automatic. Automatic control is based on the recipe concept and the cleaning philosophy is split into several phases. The PLC control is presented in the form of flow diagrams algorithms and the program code in STEP7 is enclosed in attachment on CD ROM.
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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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Distributed Control System with Dynamically Evolvable Nodes
Křek, Radim ; Kočí, Radek (referee) ; Janoušek, Vladimír (advisor)
This thesis describes creation of dynamically evolvable node, which will cooperate with other nodes. Group of these nodes will then create a distributed control system. The MQTT protocol is used for communications purposes between individual nodes. As hardware platform is used ESP32 and ESP8266. Whole operating system is written in MicroPython and supports a live uploading of user applications written in the same language. Later in thesis is decribed creation of monitoring node on Raspberry Pi, which control network. Complete system can be then used to control a intelligent house.
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Design of a Topology of a Distributed Control System for Home Automation Using IoT Technologies
Mokrejš, Jakub ; Baumgartnerová, Alena (referee) ; Ellederová, Eva (advisor)
Bakalářská práce vymezuje koncepci internetu věcí, chytré domácnosti a distribuovaného řídícího systému, poskytuje přehled komunikačních protokolů a služeb chytré domácnosti a následně diskutuje autorův vlastní návrh topologie chytré domácnosti. Práce nejdříve popisuje internet věcí a oblasti, ve kterých se využívá. Poté se práce zaměřuje na chytrou domácnost, a to konktrétně na sítě a topologie, které v ní mohou být použity. Dále je provedena analýza a srovnání sítí a topologií s ohledem na jejich použití, výhody a nevýhody. Následuje popis distribuovaného kontrolního systému a na to navazující přehled komunikačních protokolů. Popis služeb a prvků chytré domácnosti uzavírá teoretickou část práce. Praktická část práce se zaměřuje na návrh vlastní topologie a prvků pro chytrou domácnost. Práce je zakončena porovnáním vytvořené topologie s ostatními topologiemi.
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Design of a Topology of a Distributed Control System for Home Automation Using IoT Technologies
Mokrejš, Jakub ; Baumgartnerová, Alena (referee) ; Ellederová, Eva (advisor)
Bakalářská práce vymezuje koncepci internetu věcí, chytré domácnosti a distribuovaného řídícího systému, poskytuje přehled komunikačních protokolů a služeb chytré domácnosti a následně diskutuje autorův vlastní návrh topologie chytré domácnosti. Práce nejdříve popisuje internet věcí a oblasti, ve kterých se využívá. Poté se práce zaměřuje na chytrou domácnost, a to konktrétně na sítě a topologie, které v ní mohou být použity. Dále je provedena analýza a srovnání sítí a topologií s ohledem na jejich použití, výhody a nevýhody. Následuje popis distribuovaného kontrolního systému a na to navazující přehled komunikačních protokolů. Popis služeb a prvků chytré domácnosti uzavírá teoretickou část práce. Praktická část práce se zaměřuje na návrh vlastní topologie a prvků pro chytrou domácnost. Práce je zakončena porovnáním vytvořené topologie s ostatními topologiemi.
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Distributed Control System with Dynamically Evolvable Nodes
Křek, Radim ; Kočí, Radek (referee) ; Janoušek, Vladimír (advisor)
This thesis describes creation of dynamically evolvable node, which will cooperate with other nodes. Group of these nodes will then create a distributed control system. The MQTT protocol is used for communications purposes between individual nodes. As hardware platform is used ESP32 and ESP8266. Whole operating system is written in MicroPython and supports a live uploading of user applications written in the same language. Later in thesis is decribed creation of monitoring node on Raspberry Pi, which control network. Complete system can be then used to control a intelligent house.
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Model of cleaning station for food processing technology controlled by a control system na PROFIBUS network.
Vyskočil, Jaromír ; Sobotka, Milan (referee) ; Pásek, Jan (advisor)
This bachelor’s thesis deals with design, realization and laboratory commissioning of the model of keg / tank cleaning station (CIP) in foodstuff industry. The model uses two cleaning liquids – water and lye. There are several different types of valves used in the CIP model. They serves for inlet and outlet of lye or water and for separation of the both liquids branches. The control system offers monitoring of pressure, volume flow, level of the lye, etc. The measuring devises mostly communicate with PLC via industrial net PROFIBUS-DP and PA. The same net PROFIBUS-DP also provides communication between PLC and distributed control system Festo (valve island). Configuration and set up of the Festo valve island is described in the thesis as well. Further the work presents processing of the analogue values from different transmitters and their representation in a operator panel. Operator panel (OP) serves for control and visualization of the cleaning station. The OP configuration, the screens structure and the full functionality in the CIP station is explained. The individual screen description is incorporated as well. There are three modes of control – manual, semiautomatic and automatic. Automatic control is based on the recipe concept and the cleaning philosophy is split into several phases. The PLC control is presented in the form of flow diagrams algorithms and the program code in STEP7 is enclosed in attachment on CD ROM.
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