diplomsko delo
Jan Terzer (Author), Neža Mramor Kosta (Mentor)

Abstract

Senzorji so naprave za pridobivanje informacij iz okolja. Da pokrijemo večjo površino zaznavanja, jih razporedimo po željeni domeni in med seboj povežemo v senzorsko omrežje. Postavi se vprašanje ali senzorji pokrivajo celotno površino domene, oz. ali obstaja območje znotraj domene, ki ga senzorji ne dosežejo. Taka območja imenujemo luknje. V brezžičnem senzorskem omrežju s senzorji, ki se lahko premikajo, poznamo samo njihovo medsebojno povezanost, ne pa tudi položaja. Pokritost območja lahko v takšnih primerih ugotovimo s topološkimi metodami, tako da iz podatkov o povezanosti senzorjev zgradimo Ripsov kompleks in izračunamo njegove homološke grupe oziroma Bettijeva števila. V diplomski nalogi je predstavljen simulator za generiranje senzorskih omrežij in za izračun števila lukenj v domeni pokritosti na podlagi izračuna prvega Bettijevega števila ustreznega Ripsovega kompleksa.

Keywords

Bettijeva števila;homološke grupe;Ripsov kompleks;simplicialni kompleks;brezžična senzorska omrežja;območje pokritosti;računalništvo in informatika;univerzitetni študij;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FRI - Faculty of Computer and Information Science
Publisher: [J. Terzer]
UDC: 681.586:515.14(043.2)
COBISS: 1536792771 Link will open in a new window
Views: 903
Downloads: 184
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Other data

Secondary language: English
Secondary title: A topological model for wireless sensor networks
Secondary abstract: Sensors are devices for extracting information from the environment. In order to cover a larger area of detection, they are spread across the desired domain and connected in a sensor network. The question arises whether the sensors cover the entire area of domain or in other words whether there is an area within the domain that sensors do not detect. An area such as this is called a hole. In wireless non-stationary sensor networks the location of the individual sensors is not known, only information on which sensors are connected is available. The coverage of the domain of such a sensor network can be determined using topological methods. Using information on connectivity between the sensors we build the Rips complex and compute its homology groups and Betti numbers. The thesis presents a simulator for generating sensor networks and calculating the number of holes in it by computing the first Betti number of the corresponding Rips complex.
Secondary keywords: Betti numbers;homology groups;Rips complex;simplicial complex;wireless sensor networks;domain coverage;computer and information science;diploma;
File type: application/pdf
Type (COBISS): Bachelor thesis/paper
Study programme: 1000468
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za računalništvo in informatiko
Pages: 26 str.
ID: 9124492