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You searched for subject:( DS3234). Showing records 1 – 2 of 2 total matches.

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1. Kasmi, Zakaria. Offene Plattformarchitektur für Dezentrale Lokalisierungssysteme Basierend auf Ressourceneingeschränkte Geräte.

Degree: 2019, Freie Universität Berlin

A platform architecture for positioning systems is essential for the realization of a flexible localization system, which interacts with other systems and supports various positioning technologies and algorithms. The decentralized processing of a position enables to push the application-level knowledge into a mobile station and avoids the communication with a central unit such as a server or a base station. In addition, the calculation of the position on low-cost and resource-constrained devices presents a challenge due to the limited computing and storage capacity as well as power supply. Therefore, this thesis proposes a platform architecture which allows for the design of a system with the following advantages: reusability of the components, extensibility (e.g., with other positioning technologies) and interoperability. Furthermore, the position is computed on-the-fly on a low-cost device such as a microcontroller, which simultaneously performs additional tasks such as data collecting or preprocessing based on an operating system. The platform architecture is designed, implemented, and evaluated based on two systems: a time-of-arrival and a field strength-based positioning system. These systems use Ultra-Wideband (UWB) and Direct Current (DC)-pulsed magnetic signals, respectively. Suitable algorithms are proposed to compute an unoptimized position (start position). These algorithms will be analyzed and compared with respect to the stability, efficiency, complexity, and memory requirements. An adaptive algorithm is developed for the optimization of the position, which is based on the Singular Value Decomposition (SVD), Levenberg–Marquardt (LVM) algorithm, and the Position Dilution of Precision (PDOP). This algorithm allows an adaptive selection mechanism for the LVM algorithm. This adaptive algorithm enables saving of resources such as memory, computing time, and energy on resource-constrained devices. Furthermore, two variants of the LVM algorithms are used: the Dahmen-Reusken LVM and Madsen LVM, which are analyzed and compared with the Gauss-Newton algorithm. All the algorithms are derived in a convenient form for resource-constrained devices. Since the parameters of the LVM algorithm impact the accuracy as well as the required iteration number, the influence and the choice of the right parameter combination will be determined, analyzed and discussed. Finally, a method is designed and evaluated to reduce multipath errors on the mobile station. This method allows an accurate localization in non-line-of-sight scenarios. Advisors/Committee Members: male (gender), Schiller, Jochen (firstReferee), Günes, Mesut (furtherReferee).

Subjects/Keywords: magnetic field positioning system; ultra-wideband positioning system; linear algebra; localization algorithms; RIOT-OS; DS3234; DecaWave; DWM 1000; 000 Informatik, Informationswissenschaft, allgemeine Werke::000 Informatik, Wissen, Systeme::003 Systeme

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Kasmi, Z. (2019). Offene Plattformarchitektur für Dezentrale Lokalisierungssysteme Basierend auf Ressourceneingeschränkte Geräte. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-4124

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Kasmi, Zakaria. “Offene Plattformarchitektur für Dezentrale Lokalisierungssysteme Basierend auf Ressourceneingeschränkte Geräte.” 2019. Thesis, Freie Universität Berlin. Accessed January 19, 2020. http://dx.doi.org/10.17169/refubium-4124.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Kasmi, Zakaria. “Offene Plattformarchitektur für Dezentrale Lokalisierungssysteme Basierend auf Ressourceneingeschränkte Geräte.” 2019. Web. 19 Jan 2020.

Vancouver:

Kasmi Z. Offene Plattformarchitektur für Dezentrale Lokalisierungssysteme Basierend auf Ressourceneingeschränkte Geräte. [Internet] [Thesis]. Freie Universität Berlin; 2019. [cited 2020 Jan 19]. Available from: http://dx.doi.org/10.17169/refubium-4124.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kasmi Z. Offene Plattformarchitektur für Dezentrale Lokalisierungssysteme Basierend auf Ressourceneingeschränkte Geräte. [Thesis]. Freie Universität Berlin; 2019. Available from: http://dx.doi.org/10.17169/refubium-4124

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Brno University of Technology

2. Divácký, Tadeáš. Rozšiřující deska pro RaspberryPi .

Degree: 2017, Brno University of Technology

Tato práce se zabývá návrhem a následnou realizací rozšiřující desky pro RaspberryPi. Na začátku jsou vypsány všechny integrované obvody, které byly pro tuto práci vybrány. Dále je v zde popsána napájecí část, sloužící jako zdroj energie pro integrované obvody a RaspberryPi, a také realizace desky. Poslední část je zaměřena na software a to jest firmware do ATmegy a část o RaspberryPi která obsahuje vypsané knihovny které sou použité pro funkčnost programu a napsanou knihovnu pro obsluhu integrovaných obvodů.; This thesis deals with the design and subsequent realization of the expansion board for RaspberryPi. At the beginning, all the integrated circuits selected for this work are listed. In addition, the power supply section for power circuits and RaspberryPi is described here, as well as the realization of the board.The last part is focused on software and firmware that is in ATmega series and part of Raspberry Pi which includes listed libraries that sum used for the functionality of the program and written library for handling integrated circuits. Advisors/Committee Members: Kopečný, Lukáš (advisor).

Subjects/Keywords: RaspberryPi 2B; AD-převodník; AD7997BRU; GPIO expandér; MCP23017; Hodiny reálného času; RTC; DS3234; DC/DC měnič; LDO regulátor; I2C sběrnice; ATmega88PA; Ultrazvukové senzory; HC SR04; RaspberryPi 2B; AD-converter; AD7997BRU; GPIO expander; MCP23017; Real time clock; RTC; DS3234; DCDC converters; LDO regulator; I2C bus; ATmega88PA; Ultrasonic sensor; HC SR04

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Divácký, T. (2017). Rozšiřující deska pro RaspberryPi . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/67393

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Divácký, Tadeáš. “Rozšiřující deska pro RaspberryPi .” 2017. Thesis, Brno University of Technology. Accessed January 19, 2020. http://hdl.handle.net/11012/67393.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Divácký, Tadeáš. “Rozšiřující deska pro RaspberryPi .” 2017. Web. 19 Jan 2020.

Vancouver:

Divácký T. Rozšiřující deska pro RaspberryPi . [Internet] [Thesis]. Brno University of Technology; 2017. [cited 2020 Jan 19]. Available from: http://hdl.handle.net/11012/67393.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Divácký T. Rozšiřující deska pro RaspberryPi . [Thesis]. Brno University of Technology; 2017. Available from: http://hdl.handle.net/11012/67393

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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