|
|
Testing equipment for function test of automatic standby unit
Dušek, Pavel ; Pásek, Jan (referee) ; Štohl, Radek (advisor)
This bachelor’s thesis is focused on the description of automatic transfer switch and designing a tester for automatic transfer switch MODI ZA made by OEZ s.r.o. The solution itself consists of creating the state diagrams of the function test steps, programming software for Simatic S7-1S200 PLC and Simatic KTP 400 control panel and creating a technical documentation containing the tester wiring diagram, and layout of the insides of the switchboard. It also contains the diagram explaining how to connect the automatic transfer switch MODI ZA to the tester.
|
|
|
Proposal crosshead test equipment
Šilar, Tomáš ; Frýza, Josef (referee) ; Brandejs, Jan (advisor)
This thesis deals with structural design of testing device for moving parts of refrigerating devices, including functional design of drives, mechanical protection against overload and 3 design types of handles are included as well. First part describes appropriate selection of drive. Following part deals with calculations of spheroidal screw durability and calculations of mechanical protection. Final part consists of the design itself and technical drawings, according to which was the machine produced.
|
|
|
Design of tester for electric hand tools batteries
Václavík, Tomáš ; Bednařík, Josef (referee) ; Krejsa, Jiří (advisor)
This thesis describes design and realization of simple testing device used to estimate State of Health of Li-ion accumulator pack. Basic parameters of Li-ion accumulators and methods used to examine their state are explored. Specific type of accumulator and its charger are analyzed. Complete device design, device realization, measurement records and their analysis are carried out. Algorithm for quick estimate of State of Health is created.
|
|
|
Test modules for automated testing of gas boiler controllers
Herbrych, Vojtěch ; Vyskočil, Pavel (referee) ; Dřínovský, Jiří (advisor)
This thesis deals with the design and implementation of test modules for measurement and PWM signal generation and communication using OpenTherm, for automated testing of gas boiler control units at Resideo company.This work builds on an already developer facility containing a set of measurement and test modules designed for simple automated testing of developed and manufactured equipment. The reason for the designing and manufacturing the additional modules is to extend the existing test set, automate the additional testing process and the extend the existing module, that no longer meets the current requirements of Resideo´s test engineers. The existing and newly developed test modules are based on ARM microcontrollers with a Cortex-M core, which communicate with the higher/level system using the MODBUS protocol via the RS-485 communication interface. The entire test system is connected to the bus in parallel and behaves as a RESPONDER (formerly known as SLAVE). The parent system (usually a computer) behaves as a CONTROLLER (formerly called MASTER). The power supply of the modules is unified (24 VDC) and is implemented on the existing communication and power supply module. For both developed modules, a circuit diagram was designed and possibly parts of the problematic circuits were simulated. Then the firmware was developed and the functionality of the modules was verified. All the requirements of the Resideo assignment were met and the modules can easily be extended in the future with additional functions. It will be also possible to modify the already developed functions impemented in the modules.
|
|
|
Device for automated testing of gas boiler controllers
Kuřímský, Lukáš ; Háze, Jiří (referee) ; Šteffan, Pavel (advisor)
This diploma thesis deals with the design and implementation of a computer-controlled device for testing gas boiler control units, especially in the development phase. The reason for creating a test facility is the inadequacy of older test systems and the automation of existing testing. The test device in development consists of individual different cards. Each of the cards inserted into the motherboard performs its function in the system. Each of the cards has a special functionality which simulates the real conditions of the developed product. The basis of most cards is a microcontroller with a Cortex-M core, which communicates with the connected computer using the MODBUS protocol on the RS-485 communication interface. All cards on the bus are connected in parallel and behaves as a SLAVE, while the computer behaves as a MASTER and requests data or sends commands to the cards. The cards represent status switches (switching sensors), resistance and analog temperature sensors, PWM inputs and outputs (for simulation of feedback pumps or flow meters with pulse output). The cards also include a flame simulator, which reliably simulates the electrical properties of the flame and at the same time acts as a fan simulator. The input of the control unit is taken care of by the input card, which is intended for digital detection of the voltage presence in the range of 5 to 230 V DC and AC. Simultaneously, a card for connecting the power supply at zero voltage and disconnecting at zero current is created to supply the tested device with alternating voltage. A schematic diagram was designed or simulated for each card, then the function was verified and on this basis the whole card was created, including the microcontroller firmware. The most suitable solution and function of each card is carefully described and evaluated. All the requirements of the assignment within the work were met and the whole test equipment was manufactured and verified in four versions. In the future, the device is ready for the implementation of an automatic flame simulator and other improvements of individual module cards.
|
|
|
Design of pneumatic cylinder testing equipment
Macek, Tomáš ; Pavlík, Jan (referee) ; Tůma, Zdeněk (advisor)
This diploma thesis deals with the design of test equipment for selected types of pneumatic cylinders. In the first, theoretical, part of the work is an analysis of the current state of knowledge in the field of pneumatic cylinders. Furthermore, the problems in the field of measurement and testing of pneumatic components are described here, selected linear position sensors are also described herein too. The second, practical, part deals with the choice of a suitable design variant and the actual solution of the test equipment design. A pneumatic circuit is also designed here. Part of the work is a 3D model of the test equipment and drawing documentation. The conclusion of the work is devoted to the overall evaluation of the work and recommendations for practice.
|
|
|
Design of low volume inlet tester
Hotový, Michal ; Huzlík, Rostislav (referee) ; Knoflíček, Radek (advisor)
The topic of this thesis is the design of a testing device for checking electrical car sockets according customers’ requirements. The electrical socket shall be tested by electrical, mechanical and camera tests. The diploma thesis is divided into two main parts, first is a part describing the basic elements in the construction of electric vehicles, and describing types of electric sockets in electric vehicles, and second, a practical part describing the design of a testing device.
|
|
|
Device For Automatic Testing Of Ultrasonic Gas Leak Detector
Skryja, Petr
In this paper a device for automatic testing of the gas leak detector is presented. The device allows testing product which is an embedded device that is improved during a development. This requires testing the product after each implementation of a new feature, as there may be situations where this implementation will stop some part of the product from being functional. For realization mini PC Beaglebone Black was used and software architecture of this device is introduced.The presented device is able to do automatic testing that is more accurate and faster than human testing.
|
|
|
Testing equipment for function test of automatic standby unit
Dušek, Pavel ; Pásek, Jan (referee) ; Štohl, Radek (advisor)
This bachelor’s thesis is focused on the description of automatic transfer switch and designing a tester for automatic transfer switch MODI ZA made by OEZ s.r.o. The solution itself consists of creating the state diagrams of the function test steps, programming software for Simatic S7-1S200 PLC and Simatic KTP 400 control panel and creating a technical documentation containing the tester wiring diagram, and layout of the insides of the switchboard. It also contains the diagram explaining how to connect the automatic transfer switch MODI ZA to the tester.
|
|
|
Design of test equipment for testing air-cooled steam condensers
Líška, Filip ; Chýlek, Radomír (referee) ; Kracík, Petr (advisor)
The work is focused on the design of a testing device for testing air-cooled condenser tubes. At the beginning of work are described basic types of industrial air condensers, possibilities of tube types and their materials. A radial fan that will supply cooling air to the wind tunnel is already purchased for the testing device. For minimum and maximum parameters, the basic geometry and state parameters are first proposed. Subsequently, the basic design was tested in the CFD. The result of the first model was not satisfying because the speed field has not been evenly changed to a straight tunnel. For these conditions, several variants have been tested in the second model, and the "blow" on the tubes inside the wind tunnel has been tested for the best variant.
|
guest ::
