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Izdelava dekoderja protokola CMUX/PPP na povezavi med števcem in komunikacijskim modulom
ID Klemenčič, Marija (Author), ID Kos, Andrej (Mentor) More about this mentor... This link opens in a new window

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Abstract
V diplomskem delu je predstavljena implementacija orodja za dekodiranje protokola pretvornik-multipleksor. Izdelani dekoder je napisan v programskem jeziku Lua in namenjen uvozu v orodje Wireshark. Ker je bilo diplomsko delo izdelano v sodelovanju s podjetjem, ki izdeluje merilnike električne energije, smo želeli uspešno razpoznavati komunikacijo med merilniki in komunikacijskimi moduli. Pri tem se med drugim uporablja tudi povezava s protokolom od točke do točke, zato smo želeli interpretirati tudi te podatke. Izdelani dekoder kliče ustrezne dekoderje za razpoznavo protokolov, enkapsuliranih znotraj okvirja CMUX. S tem je izboljšan pregled nad komunikacijo in omogočeno hitrejše in preprostejše iskanje posebnosti ter napak. V diplomskem delu so opisani pregled zastopanih protokolov in razlogi za potrebo po tovrstnem programu. Sledi pregled postopka izdelave dekoderja po korakih. Opisani so izzivi, ki so se pojavili ob implementaciji, in kako smo se soočili z njimi. Dekoder smo preizkusili tudi na realnih podatkih, pridobljenih iz komunikacije med merilnikom in komunikacijskim modulom.

Language:Slovenian
Keywords:protokolni analizator, dekoder, protokol pretvornik-multipleksor, protokol od točke do točke
Work type:Undergraduate thesis
Organization:FE - Faculty of Electrical Engineering
Year:2023
PID:20.500.12556/RUL-149895 This link opens in a new window
COBISS.SI-ID:165438467 This link opens in a new window
Publication date in RUL:11.09.2023
Views:478
Downloads:144
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Secondary language

Language:English
Title:Implementation of a CMUX/PPP protocol decoder on the connection between the meter and the communication module
Abstract:
The thesis presents the implementation of a decoder for the recognition of the Converter-Multiplexer (CMUX) protocol. The decoder is written in the Lua programming language and is intended to be imported into the Wireshark tool. As the thesis was developed in cooperation with a company that manufactures electricity meters, we wanted to successfully decode the communication between the meters and the communication modules. Among other things, a point-to-point protocol connection is used, so we also want to interpret this data. The developed decoder calls the corresponding decoders to decode the protocols encapsulated within the CMUX frame. This improves the overview of the communication and allows faster and simpler search for peculiarities and errors. First an overview of the protocols is represented and the reasons for the need for such a program are described. This is followed by a step-by-step overview of the process of building the decoder. Challenges encountered during the implementation and how they were solved are also described. Finally, the decoder was tested on real data obtained from the communication between the meter and the communication module.

Keywords:protocol analyser, decoder, Converter-Multiplexer protocol, Point-to-Point Protocol

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