Razvoj bioimpedančnega merilnika na osnovi mikrokontrolerja

OBID, JURE (author), Križaj, Dejan (mentor)

Diplomska naloga se nanaša na razvoj, izdelavo in testiranje elektronskega vezja, namenjenega nadgradnji merilnika za potrebe merjenja (bio)impedance. Uporabo v mikrokontroler vgrajenega analogno-digitalnega in digitalno-analognega pretvornika sem nadomestil z zunanjimi zmogljivejšimi integriranimi vezji. Tiskano vezje sem zasnoval in izdelal s programskim paketom Altium Designer ter ga povezal z razvojno ploščo mbed NXP LPC1768, ki vsebuje mikrokontroler. S programskim jezikom C++ sem v prevajalniku, ki je za potrebe programiranja razvojne plošče dostopen na spletu, vzpostavil serijsko komunikacijo z zunanjimi integriranimi vezji. Nato sem izdelal testno vezje ter preizkusil delovanje končnega izdelka. V diplomskem delu je opisana zgradba, delovanje ter konfiguracija uporabljenih integriranih vezij ter realizacija programske opreme. Podani so tudi rezultati meritev, ki sem jih naredil na testnem vezju.

• Language: Slovenian
• Keywords: elektronsko vezje, integrirano vezje AD in DA pretvornik, Altium Designer, razvojna plošča, mikrokontroler, C++, serijska komunikacija, testno vezje
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2015
• PID: 20.500.12556/RUL-73151
• Publication date in RUL: 26.10.2015

Secondary language

• Language: English
• Title: Development of a bioimpedance measurements device based on a microcontroller

Abstract

The tesis describes the development and testing the prototype of electronic circuit, which is designed to upgrade existing bioimpedance device (BIA). The current design is based on usage of a microcontroller with integrated AD/DA converters, while the upgrade include the use of faster and more accurate AD/DA converters. Printed circuit board (PCB) was designed in Altium Designer software package and connected with mbed NXP LPC1768 development board. Serial communication between integrated circuits and microcontroller was designed in C++ compiler, which is online and intended to programming development board. Then I prepared a test circuit and tested the functionality of the final product. The thesis describes structure, operation and configuration of used integrated circuits and realisation of software. There are also measurement results, which I have done on the test circuit.

• Keywords: electronic circuits, integrated circuits AD/DA converter, Altium Designer, development board, microcontroller, C++, serial communication, test circuit