|
|
Implementation of IoT Communication Protocols Utilizing UniPi Module for Raspberry Pi
Krejčí, Jan ; Štůsek, Martin (referee) ; Mašek, Pavel (advisor)
Presented diploma thesis is focused on the implementation of Wireless M-Bus protocol to embedded device RaspberryPi with expansion board UniPi. The protocol is implemented in Python with Wireless M-Bus devices communicating via IQRF transceiver connected to the UART bus. The theoretical part is focused on an overview of embedded devices for the IoT, the possibility of their expansion. Further, the UniPi expansion board and Wireless M-Bus transceiver are detailed. First part of the thesis focuses on the Wireless M-bus layers, which provides a basic knowledge for understanding the practical part. The theoretical part concludes overview of captured devices including a description of their data units. In the practical part is the implementation of the sample application for receriving data from a Wireless M-Bus sensors. The application is able to read data from devices transmitting encrypted communication.
|
|
|
Development of an IoT device for NB-IoT technology
Ježek, Jiří ; Štůsek, Martin (referee) ; Pokorný, Jiří (advisor)
The bachelor thesis deals with the design of the IoT sensor communicating with the modern technologies NB-IoT. In the theoretical part of the bachelor thesis are described properties of selected LPWAN networks for communication between long distance devices. Wireless networks are compared and evaluated based on bandwidth, power and sensitivity, transmission rates, types of modulation, and pricing. It is followed by Market Research with IoT devices communicating over LPWAN networks. The practical part deals with the design of equipment for the measurement of selected parameters of water and air quality communicating through NB-IoT wireless technology, software solution of the device and testing communication between the device and the server. The output of the practical part is the proposed circuit diagram, printed circuit board and C ++ written solution using the on-line development environment Mbed.
|
|
|
Universal Tester of Radio Conditions for Narrowband IoT Communication Technology
Možný, Radek ; Štůsek, Martin (referee) ; Mašek, Pavel (advisor)
Technology Narrowband IoT is a representative LPWA (Low Power Wide Area) tech-nology that due to its promising features aims for demands of the Internet of Thingsapplications for autonomous data sending from sensors in areas of poor mobile coverage.For such applications, it is beneficial to firstly map properties of communication technol-ogy in areas of intended use and evaluate whether or not is this technology applicable.This Master thesis deals with the design of the hand-held measuring device for evaluationof Narrowband IoT properties. The output of this thesis is firstly comparison of LPWAtechnologies secondly, design of the mentioned device and verification of its functional-ity. And in last part description of measurement of transmission delay for delay-tolerantapplications. Transmission delay is a critical parameter for delay-tolerant applications.Such an application can be, for example, smart electrometers for which there is definedmaximal allowed transmission delay of 10 seconds and therefore it is desirable to evalu-ate whether or not is the deployment of the communication technology Narrowband IoTsuitable in the intended area for delay-tolerant or even for delay-intolerant applications.
|
|
|
Multi-radio Tester Utilizing LoRaWAN and Narrowband IoT Communication Technologies
Novotný, Jaromír ; Štůsek, Martin (referee) ; Mašek, Pavel (advisor)
This Master thesis is focused on the design and consequential realization of the Multi-RAT communication device. The theoretical part describes a comparison of two promising communication LPWA (Low Power Wide Area) technologies that are available to use in the Czech Republic. These technologies are NB-IoT (NarrowBand-Internet of Things) and LoRaWAN (Long Range Wide Area Network). The practical part contains a description used components, their consequential fitting and testing of designed printed circuit board of the device. The thesis also describes the implementation of software and realized measurement. Technical documentation of a device can be found in the appendix of this thesis.
|
|
|
Laboratory Demonstrator for LPWA Technologies Enabling the Communication via the Lightweight M2M (LWM2M) Protocol
Dvořák, Radim ; Štůsek, Martin (referee) ; Mašek, Pavel (advisor)
As the number of wireless devices rises, so does the demand for reliable data transmission. To ensure the reliability of data transfers with such devices, suitable wireless technology, and a suitable transmission protocol have to be chosen according to the device capabilities and requirements. This thesis describes LPWA (Low-Power Wide-Area) technologies currently available on the market, both on licensed spectrum and non-licensed spectrum, focusing on licensed spectrum technologies (Narrowband Internet of Things, LTE-M) and also commonly used M2M enabled protocols for IoT devices. Furthermore, it compares those protocols from the communication parameters and data traffic perspectives with focus on overheads that further increase the amount of data transmitted but are necessary to ensure reliable data transmission. Lastly, it focuses on LWM2M protocol describing it to the detail and describes an LWM2M C++ library created as part of this thesis. In addition, a laboratory demonstrator was created utilizing this library.
|
|
|
Access Control System Utilizing NFC and Arduino Microcontroller
Hájek, Jaroslav ; Štůsek, Martin (referee) ; Hošek, Jiří (advisor)
The Bachelor thesis focuses on acces systems including administration of locks, groups of users, users and their identities. For simple implementation of the system have been created four significant elements of the project: a web interface Locker, an application server Authentizer, MySQL database and an Android application. The web interface is used for system administration and included communication with the database. The server application is used for a communitation between the Locks and the MySQL database. The pivotal role of the server application is verification identities of users. The sever application and the database are used as publishing API. Android application is used as identity instead of identity card.
|
|
|
Research on Reliable Low-Power Wide-Area Communications Utilizing Multi-RAT LPWAN Technologies for IoT Applications
Štůsek, Martin ; Grochla, Krzysztof (referee) ; Curado, Marilia (referee) ; Hošek, Jiří (advisor)
Předkládaná disertační práce je zaměřena na „Výzkum spolehlivé komunikace pro IoT aplikace v bezdrátových sítích využívajících technologie Multi-RAT LPWAN“. Navzdory značnému pokroku v oblasti vývoje LPWA technologií umožňující masivní komunikace mezi zařízeními (mMTC), nemusí tyto technologie výkonnostně dostačovat pro nově vznikající aplikace internetu věcí. Hlavním cílem této disertační práce je proto nalezení a vyhodnocení limitů současných LPWA technologií. Na základě těchto dat jsou nevrženy nové mechanismy umožňující snazší plánování a vyhodnocování síťového pokrytí. Navržené nástroje jsou vyladěny a validovány s využitím dat získaných z rozsáhlých měřících kampaních provedených v zákaznických LPWA sítích. Tato disertační práce dále obsahuje návrh LPWA zařízení vybavených více komunikačními rozhraními (multi-RAT) které mohou umožnit překonání výkonnostních limitů jednotlivých LPWA technologií. Současná implementace se zaměřuje zejména na snížení spotřeby zařízení s více rádiovými rozhraními, což je jejich největší nevýhodou. K tomuto účelu je využito algoritmů strojového učení, které jsou schopné dynamicky vybírat nejvhodnější rozhraní k přenosu.
|
|
| |
|
|
Relational and NoSQL database for collecting data from IoT devices
Tomiczek, Roman ; Štůsek, Martin (referee) ; Šeda, Pavel (advisor)
This bachelor work is focused on the analysis of the relational and NoSQL (Not only SQL) databases for collecting a huge amount of data from IoT (Internet of Things) device. Theoretical part contains an introduction to the problematic of the relational and NoSQL databases. The relational database describes fundamental principles, relational algebra, normal forms and so on. The non-relational database characterises the main properties and describes different types of typologies. It deals with the NoSQL documentation databases called Elasticsearch as well. Practical part contains a proposal and realization of the MySQL database, realization non-relational database Elasticsearch as well as JavaFx application for measurement of database parameters. Further contains results of the measurement of parameters and properties of databases.
|
|
|
Design of a programmable attenuator
Pokorný, Rostislav ; Mašek, Pavel (referee) ; Štůsek, Martin (advisor)
This Master´s thesis focuses on design and implementation of programmable attenuator. The main aim of this thesis is to create an electronical device that provide continuous setting of attenuation value in the range between 0–150 dB. Setting a value from the range can be performed using buttons and set values are shown on display. For this thesis an attenuator with working frequency between 0–6 GHz was chosen and four–layer printed circuit board was designed. As a result the device is fitted with an 8bit microcontroller ATmega328P–PU using five 6bit digital attenuators connected in series with manual and program settings of attenuation from 0–157,5 dB with step of 0,5 dB. Data are shown on a build–in display. The application for remote settings and value reading over integrated USB (Universal Serial Bus) interface, was created in C#. In conclusion of this thesis there is a measurement evaluation of attenuation measurement performed on the device.
|
guest ::
RSS feed.