Ugradbeni sustav sonde za ispitivanje vrtložnim strujama s bežičnim upravljanjem i prijenosom podataka

master's thesis

• Title (english): Embedded system for eddy current testing probe with wireless control and data transmission
• Author: Josip Dorić
• Mentor: Darko Vasić (mentor)
• Committee member: Darko Vasić (predsjednik povjerenstva)
• Committee member: Željka Lučev Vasić (član povjerenstva)
• Committee member: Davorin Ambruš (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2024-07-19, Croatia

Abstract

Sonda za nerazorno ispitivanje vodljivih materijala vrtložnim strujama se s instrumentom obično spaja kabelom radi pobude i akvizicije signala sonde. U ovom radu je osmišljeno, izvedeno i funkcijski ispitano senzorsko sučelje i ugradbeni računalni sustav zasnovan na mikrokontroleru ARM, sklopu za izravnu digitalnu sintezu signala i Bluetooth bežičnoj komunikaciji sa zadaćom upravljanja, pobude, akvizicije i bežičnog prijenosa podataka diferencijalne sonde za ispitivanje vrtložnim strujama. Izvedene su sljedeće funkcionalnosti: pobuda sonde u mosnom spoju harmoničkim signalom frekvencije do 50 kHz; akvizicija diferencijalnog signala; digitalno fazno osjetljiva detekcija signala sonde; bežična konfiguracija sustava i prijenos obrađenih podataka sonde na osobno računalo. Koriste se razvojni sustav STM32F4 Discovery, DDS sklop AD9838, operacijska pojačala OPA363 i TLV4120, instrumentacijsko pojačalo AD8421 i Bluetooth modul HC-05.

Abstract (english)

A probe for non-destructive testing of conductive materials using eddy currents is usually connected to an instrument by a cable for excitation and signal acquisition. In this work, a sensor interface and an embedded computer system based on an ARM microcontroller, a direct digital signal synthesis circuit, and Bluetooth wireless communication were designed, implemented, and functionally tested with the task of managing, exciting, acquiring, and wirelessly transmitting data from a differential eddy current testing probe. The following functionalities were implemented: probe excitation in a bridge configuration with a harmonic signal up to 50 kHz; acquisition of the differential signal; digital phase-sensitive detection of the probe signal; wireless system configuration and transmission of processed probe data to a personal computer. Components used are: STM32F4 Discovery development system, DDS AD9838, operational amplifiers OPA363 and TLV4120, instrumentation amplifier AD8421, and Bluetooth module HC-05.

• Keywords: nerazorno ispitivanje; vrtložne struje; ugradbeni senzorski sustav
• Keywords (english): non-destructive testing; eddy current; embedded sensor system
• Language: croatian
• URN:NBN: urn:nbn:hr:168:090676
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije (magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2024-10-12 20:27:19