Detektor kovin z mikrokrmilnikom

DOLINŠEK, MARJAN (author), Žemva, Andrej (mentor)

V diplomskem delu je predstavljen razvoj detektorja kovin, ki bazira na mikrokrmilniku Atmega 324 PA iz družine AVR. Krmilniki iz te družine so zaradi preproste uporabe velikokrat uporabljeni v vgrajenih sistemih. Predstavljen detektor deluje z zaporednim vzbujanjem iskalne tuljave ter merjenjem prejetega odziva. To počne s pravokotnim signalom frekvence 9 kHz. Tip detektorja se imenuje pulse induction detector. Ima možnost spreminjanja parametrov delovanja s pomočjo zaslona LCD in štirih tipk. Nastavimo lahko občutljivost, število izmerjenih vzorcev, osvetlitev ter zvočno informacijo. Opisano je programsko in strojno delovanje predstavljenega detektorja. Predstavljen je tudi zgodovinski razvoj detektorjev, posamezni tipi ter njihovo delovanje.

• Language: Slovenian
• Keywords: detektor kovin, mikrokrmilnik, AVR
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2018
• PID: 20.500.12556/RUL-101229
• Publication date in RUL: 16.05.2018

Secondary language

• Language: English
• Title: Microcontroller based metal detector

Abstract

This thesis describes the development of metal detector based on ATmega 324PA, microcontroller from AVR family. Microcontrollers from this family are user friendly and because of that, often used in embedded systems. Presented detector works by successively energizing search coil and measuring resulting voltage. Energizing is done with square wave at a frequency of 9 kHz. This type of detector is named pulse induction detector. It has ability to set and change working parameters with LCD screen and four push buttons. It is possible to set sensitivity, number of samples, back light and audio information. This thesis includes description of software and hardware operation of the detector. The history, types of detectors and their operation are also described.

• Keywords: metal detector, microcontroller, AVR