Razvoj in izvedba komunikacijskega vmesnika med vodilom RS-485 in brezžično tehnologijo Bluetooth : diplomsko delo

Frelih, Krištof (author), Žemva, Andrej (mentor)

Diplomsko delo opisuje razvoj komunikacijskega vmesnika med vodilom RS-485 in tehnologijo BLE za lažje testiranje električnih števcev podjetja Iskraemeco. Uporaba vmesnika bo omogočala, da je električni števec od računalnika oddaljen dlje, kot bi mu to omogočala dolžina kabla. V prvem poglavju je predstavljen električni števec in vodilo RS-485, v drugem poglavju je opisana komunikacija BLE, RS-485 in protokol HDLC, nato pa je opisana predelava programske predloge za mikrokrmilnik Nordic nRF52832, izbira in impedančna prilagoditev antene za BLE, zasnova ter risanje tiskanega vezja s programom Altium. Na koncu so predstavljeni rezultati in delovanje komunikacijskega vmesnika.

• Language: Slovenian
• Keywords: BLE, RS-485, komunikacijski vmesnik, nRF52832, antena
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FE - Faculty of Electrical Engineering
• Place of publishing: Ljubljana
• Publisher: [K. Frelih]
• Year: 2021
• Number of pages: XXII, 47 str.
• PID: 20.500.12556/RUL-127813
• UDC: 621.39(043.2)
• COBISS.SI-ID: 69010179
• Publication date in RUL: 23.06.2021

Secondary language

• Language: English
• Title: Design and implementation of RS-485 bus and Bluetooth wireless technology communication interface : visokošolski strokovni študijski program prve stopnje Aplikativna elektrotehnika

Abstract

The thesis addresses development of a communication adapter between RS-485 bus and BLE technology for easier testing of electric meter. Communication adapter will allow electric meter to be situated at a distance from the computer greater than the cable length. The first chapter presents the electric meter and RS-485 bus, the second chapter describes the BLE, RS-485 and HDLC protocol. Then follows the description of modifying the firmware template for microcontroller Nordic nRF52832, selection and impedance matching of the antenna for BLE, designing and drawing a printed circuit board with program Altium. Operating results of the communication adapter are presented at the end of the thesis.

• Keywords: BLE, RS-485, communication infterface, nRF52832, antenna