|
|
Weather Station with Ethernet Interface
Novák, Pavel ; Šimek, Václav (referee) ; Bartoš, Pavel (advisor)
This thesis deals with the design and construction of the meteorological station. The meteorological station is designed and constructed to be able to measure the basic meteorological parameters (temperature, humidity, air pressure) and the other three variables (measuring rainfall, wind speed, wind direction). This thesis will introduce you to meteorology. Meteorology determines the daily weather forecast and the results are used for examples in aviation or maritime affairs. The method of atmospheric origin is given in the theoretical part. Meteorology must use measuring instruments to determine quantities. The dissertation also includes analysis of the measuring instruments. The meteorological station uses the Ethernet technology. In the chapter devoted to Ethernet are described its principles, types and method of power supply over Ethernet. The following section describes the design of the entire meteorological station, selection of all components and description of their connection. The chapter about implementation contains a description of the parts which forms program part of the meteorological station. The aim of the thesis is a summary of the achieved results including price comparison of the renovated meteorological station with other meteorological stations, which can be normally bought.
|
|
|
Meteorological station system
Čada, Jan ; Balík, Miroslav (referee) ; Lattenberg, Ivo (advisor)
This bachelor thesis deals with the design and implementation of a online meteorological station system, which consists of individual weather stations that communicate via the Internet with the server. The first part of the thesis discusses the principles of measuring major meteorological variables and deals with the selection of suitable sensors for measuring temperature, atmospheric pressure, humidity, wind speed and rainfall. In the practical part, one of the weather stations based on Raspberry Pi Zero microcomputer is designed and realized. As a complement to the measured data, the station includes a camera that captures the view from the site where the meteostation is installed. 3D printing is used to realize most of the mechanical parts, it has the advantage of speed, accuracy and easy reproducibility. For the measurement of temperature, pressure and humidity, a combined sensor BME280 from Bosch is used, which is placed in a small Stevenson screen. The wind speed is measured by a cup anemometer whose rotation is sensed by an integrated Hall sensor. The output pulses are then counted using the PCF8583 circuit, which has an I2C interface for reading the values with a Raspberry Pi microcomputer. Special attention is paid to the construction of a custom calibratable tipping bucket rain gauge with a resolution of 0,5 mm, whose mechanical motion is also sensed by a Hall sensor as in the anemometer. The reading of the data from sensors and sending it to the server is handled by a Python script. For storing and presenting data to users, a custom server solution based on LAMP webserver is implemented, its source codes are written in PHP, HTML, JavaScript and CSS. In addition to the web interface, which displays the data in graphs, the measured data can be also presented to the user via an application for mobile devices based on Android. The application was developed in C# using the Xamarin framework in the Microsoft Visual Studio development environment. Among other things, it implements a widget for quick access to the measured values directly from the home screen. In the final part of the thesis, interesting findings obtained by observing the measured values are mentioned.
|
|
|
Simple Remote Signalling of PLC Systems
Kacálek, Jan ; Šimek, Václav (referee) ; Tříska, Vít (advisor)
The aim of this thesis is the design and manufacture of hardware and software facilities used for the demonstration of communication with PLC systems. Furthermore, this paper summarizes the possibilities of communication and partially implements the MODBUS protocol via RS485 serial line. The hardware device is fabricated on the PCB and the components commonly available in electronics stores. Includes LCD display and LEDs for status display PLC system. The software application is written in Java and implements the same functionality as the hardware device.
|
|
|
Network design support software
Špidla, Aleš ; Jeřábek, Jan (referee) ; Pelka, Tomáš (advisor)
The bachelor thesis is aimed at supporting of designing of computer networks. The thesis describes the steps which follows to successful propose of computer network. Furthermore, it discusses errors which should be avoided, the various recommendations from the positioning of devices in the patch panel, to allocating the address space of IP addresses. There is also mentioned three level hierarchy of networks, QoS, problems of VLANs and switches cascade connection. A large part describes the benefits of stackable switches, their inclusion in the network, and then describes the advantages of different kinds of PoE (Power over Ethernet) devices. Also noteworthy is the chapter, which deals with IP networks. It points out how to allocate IP addresses and it also describing the most frequently used method for allocating subnets which is reverse binary method. The last part is devoted to the description of the application, which allows users to learn about different variants of switches, VoIP phones, find out the advantages and disadvantages of different transmission media, or the difference between software or hardware firewall. The output of this application is form, which can serve as network documentation.
|
|
|
Acquisition Unit for Security System
Pejchal, Luboš ; Fuchs,, Michal (referee) ; Dušek, Martin (advisor)
Project is focused to development of security unit for security of homes, flats and other similar spaces against intruders (thieves). Design is focused to solution of hardware and firmware for security units and their control software for PC. Hardware design solve supply over ethernet PoE, backup of supply, connection securities sensors to security unit. Firmware prevents failure of units and it is communicating with sensors and PC. Software in PC provides settings of security units, deactivating of alarm and measure temperature by security unit.
|
|
|
Network design support
Zemánek, Martin ; Fojtová, Lucie (referee) ; Pelka, Tomáš (advisor)
The work is focused on support of computer networks. It contains basic information about the network elements and possibilities of their involvement. The steps are described so that all procedures were intelligible. The work contains various thoughts on various options for integration of network and end elements to be as effective as possible. Shown are various examples of design documentation, which should serve primarily as a good springboard. We can see the lists of VLANs, IP addresses, calculations of energy consumption and cooling requirements. The introductory section also presents a variety of topology and characteristics of networks and network elements. We deal with various technologies such as QoS, PoE, EteherChannel, Trunking, and more. We are also stacking switches and effective involvement of network elements. All these information was collected and on the basis of these applications have been developed, which should serve as online network documentation. The application is writing with Nette Framework, which also has support for Czech, so it is much material available, which relieved the work in an environment of PHP, MySQL, HTML and CSS. The result is a basic version that is ready to further develop and to be as user friendly as possible and ease the job of designing the network.
|
|
|
Revision & improvement of structural cabling in the building of the Faculty of Music, Janáček Academy of Music and Performing Arts
Špičák, Jan ; Novotný, Vít (referee) ; Sedlák, Petr (advisor)
The objective of this bachelor’s thesis is to perform an analysis of structural cabling in the building of the Faculty of Music, Janáček Academy of Music and Performing Arts, and to propose an improvement of mentioned cabling system to achieve current industry standards of stability & reliability. Both horizontal cabling routes and physical network topology are taken into account; network hardware recommendation with its setting is also included, although mentioned newly purchased equipment is not strictly required. In the conclusion, the thesis deals with an economic evaluation of the proposed solution as a major decision-making factor for the chosen public institution.
|
|
|
Design and implementation of managed PoE injector
Frkal, Pavel ; Frolka, Jakub (referee) ; Krajsa, Ondřej (advisor)
This study deals with power supply for network devices using existing structured cabling. Various power supplies are analysed including their limitations and also deals with measuring of the consumed energy. The outcome is 24-port passive PoE injector for remote power supply of network equipment. It's suitable namely for remote devices which lacks built-in PoE support as these do not need major modifications (using passive injection). Power options including current measurement may be done via administrative web interface.
|
|
|
Power over Ethernet
Hykš, Matěj ; Šilhavý, Pavel (referee) ; Koton, Jaroslav (advisor)
The bachelor thesis focuses on the topic of powering network elements using Power over Ethernet shortly PoE. The work focuses more in detail on the functions of the 802.3af and 802.3at standards, which are described in detail and explains their functionality on specific examples of PD chips. Then it summarizes the measurement methodology used for 3 devices belonging to the PSE category and 4 devices from the PD category. In both cases, it focuses on their analog and digital communication.
|
|
|
Communication hardware for I4.0 Barman
Kubíček, Richard ; Streit, Jakub (referee) ; Kaczmarczyk, Václav (advisor)
This thesis deals with description and implementation of AAS module. This thesis describes the selection of individual components of device. This module will be a part of the testbed Barman project. This project is implemented in accordance with Industry 4.0 trends. Device will be work as reader of information and ingredients from NFC tags placed on a glass. With this information, parent cell can make decision which action will be done with glass. In this thesis, software for hardware operation with AAS module will be created and described. This program will further communicate with the parent program controlling the functionality of the cell itself.
|
guest ::
