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Communication and control card for electron microscope
Robotka, Jan ; Petyovský, Petr (referee) ; Macho, Tomáš (advisor)
The main aim of this thesis is to design a communication and control card for an electron microscope, eventually for other equipments of the company Delong Instruments a.s., which is dealing with its development and production. This card should replace existing communication card because of its low computational performance. Also, it should replace control and measure card manned with A/D and D/A converters. Thus, the new card will be providing not only the communication with a superior PC and other electronic systems, but also the control of other subsystems of the electron microscope, the determining of processional states and the measuring of internal physical quantities. At the beginning the requirements were determined and the main concept was made with the inclusion of the simple block diagram. It was very important to choose a suitable microcontroller, which will be an intelligence of the whole card and so it will be the most important component. The accent was set mainly on the sufficient computational performance, high modularity of its periphery, good vision of the future innovation and support and, of course, the price. The next requirement was the implementation of the Ethernet, which will be used for the communication between the card and the superior PC. The microcontroller which was chosen have the core architecture ARM Cortex-M3 and it is described in separate chapter. The next part of this thesis is dealing with the main communication standard of the card, which is the Ethernet. After the general description, the Ethernet was mainly discussed in context of the chosen microcontroller. The possibilities of the application of higher layer TCP/IP protocols were also discussed. Implied part of the thesis was the selection of other important components, especially A/D and D/A converters. Its characteristics will have a big effect on the characteristics of the card. In the last and the most important phase the electrical scheme was designed and it was described in detail. This scheme is the main result of this thesis and it is the main document for the future realization. Designed card will be able to process and control 16 differential analogue input signals, 16 differential analogue output signals, 8 digital inputs, 8 simple digital outputs and 4 digital outputs triggered by optocouplers. It will be able to communicate with the superior PC over the Ethernet with the maximum bit rate of 100 Mbit/s, with other electronic cards over the serial line UART through the optical fibers and with other internal and external equipments over the RS-485 and RS-232.
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Piezomotor control
Robotka, Jan ; Richter, Miloslav (referee) ; Macho, Tomáš (advisor)
This thesis aims to propose and implement a control system for a new type of piezomotor with the action elements of MPA for the purpose of measuring characteristics of this piezomotor needed for its use in practice. At the beginning the text processes theoretical data needed for design the control system. The author describes the principle of piezoelectric effect and deals with issues of piezomotors, which are based on this principle. Primarily theoretical knowledge relating to the piezomotor is processed. He also describes the characteristic of microcontroller C8051F015 based on processor core 8051, which is main element of whole control system. His peripherals, which are used in control system, are described more. One of the main parts of the text is design of analog board, which create sawmill course of voltage on piezocrystals of piezomotor. Images are used for description its individual parts. The circuit is controlled by digital and analog outputs of the microcontroller. Another part of the work is focused on communication between microcontroller and PC, which transmits instructions from user using the serial line. Further options of proposed application are shown and important used software components are described. Equally important is program for the microcontroller, which processes incoming messages from PC and manages its digital and analog outputs. In the next chapter is shown design of piezomotor and implementation of prototype the control system. Conclusion of work is devoted to measurement of piezomotor characteristics that shows resolution dependence on frequency, voltage amplitude and vertical pressure. The outgrowth of project, which is elaborated in this work, is the functional control system for the piezomotor with possibility of control through user application on PC. Obtained characteristics of piezomotor will be used for implementation into practice.
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Piezomotor control
Robotka, Jan ; Richter, Miloslav (referee) ; Macho, Tomáš (advisor)
This thesis aims to propose and implement a control system for a new type of piezomotor with the action elements of MPA for the purpose of measuring characteristics of this piezomotor needed for its use in practice. At the beginning the text processes theoretical data needed for design the control system. The author describes the principle of piezoelectric effect and deals with issues of piezomotors, which are based on this principle. Primarily theoretical knowledge relating to the piezomotor is processed. He also describes the characteristic of microcontroller C8051F015 based on processor core 8051, which is main element of whole control system. His peripherals, which are used in control system, are described more. One of the main parts of the text is design of analog board, which create sawmill course of voltage on piezocrystals of piezomotor. Images are used for description its individual parts. The circuit is controlled by digital and analog outputs of the microcontroller. Another part of the work is focused on communication between microcontroller and PC, which transmits instructions from user using the serial line. Further options of proposed application are shown and important used software components are described. Equally important is program for the microcontroller, which processes incoming messages from PC and manages its digital and analog outputs. In the next chapter is shown design of piezomotor and implementation of prototype the control system. Conclusion of work is devoted to measurement of piezomotor characteristics that shows resolution dependence on frequency, voltage amplitude and vertical pressure. The outgrowth of project, which is elaborated in this work, is the functional control system for the piezomotor with possibility of control through user application on PC. Obtained characteristics of piezomotor will be used for implementation into practice.
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Communication and control card for electron microscope
Robotka, Jan ; Petyovský, Petr (referee) ; Macho, Tomáš (advisor)
The main aim of this thesis is to design a communication and control card for an electron microscope, eventually for other equipments of the company Delong Instruments a.s., which is dealing with its development and production. This card should replace existing communication card because of its low computational performance. Also, it should replace control and measure card manned with A/D and D/A converters. Thus, the new card will be providing not only the communication with a superior PC and other electronic systems, but also the control of other subsystems of the electron microscope, the determining of processional states and the measuring of internal physical quantities. At the beginning the requirements were determined and the main concept was made with the inclusion of the simple block diagram. It was very important to choose a suitable microcontroller, which will be an intelligence of the whole card and so it will be the most important component. The accent was set mainly on the sufficient computational performance, high modularity of its periphery, good vision of the future innovation and support and, of course, the price. The next requirement was the implementation of the Ethernet, which will be used for the communication between the card and the superior PC. The microcontroller which was chosen have the core architecture ARM Cortex-M3 and it is described in separate chapter. The next part of this thesis is dealing with the main communication standard of the card, which is the Ethernet. After the general description, the Ethernet was mainly discussed in context of the chosen microcontroller. The possibilities of the application of higher layer TCP/IP protocols were also discussed. Implied part of the thesis was the selection of other important components, especially A/D and D/A converters. Its characteristics will have a big effect on the characteristics of the card. In the last and the most important phase the electrical scheme was designed and it was described in detail. This scheme is the main result of this thesis and it is the main document for the future realization. Designed card will be able to process and control 16 differential analogue input signals, 16 differential analogue output signals, 8 digital inputs, 8 simple digital outputs and 4 digital outputs triggered by optocouplers. It will be able to communicate with the superior PC over the Ethernet with the maximum bit rate of 100 Mbit/s, with other electronic cards over the serial line UART through the optical fibers and with other internal and external equipments over the RS-485 and RS-232.
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