| Title | Projektiranje sustava za generiranje magnetskog polja za ispitivanje imuniteta na zračene elektromagnetske smetnje |
| Author | Josip Bajzek |
| Mentor(s) | Adrijan Barić (thesis advisor)
|
| Abstract | Cilj ovog završnog rada bio je ostvariti sustav za generiranje elektromagnetskog polja od 60 dBuA/m do 120 dBuA/m na frekvencijama od 300 kHz d 1.2 MHz. S obzirom da je korištena antenska petlja od N = 3 zavoja i polumjera r = 30 cm, potrebna struja za ostvarivanje zadanog elektromagnetskog polja je 200 mA. Signal koji inducira magnetsko polje je generiran pomoću generatora signala. Generator signala sastoji se od direktnog digitalnog sintetizatora, DDS, ostvarenog pomoću čipa AD9832, zatim od sklopa za podešavanje amplitude ostvarenog pomoću čipa DS1267 te od sklopa za dodatnu prilagodbu amplitude izlaznog napona u čiju svrhu je korišteno operacijsko pojačalo CA3140. Pomoću razvojnog okruženja Arduino 1.5.6 – r2 BETA upravlja se Arduino Due platformom koja upravlja generatorom signala na način da šalje kodne riječi DDS-u koji generira signal određene amplitude i frekvencije, te sklopu za podešavanje amplitude, koji dodatno modificira amplitudu izlaznog signala. Pojačanje sklopa za dodatnu prilagodbu amplitude, koji je ustvari invertirajuće pojačalo, regulira sam korisnik na fizički način. Jakost struje kroz antenu mjerimo pomoću strujne sonde. |
| Keywords | electromagnetic field sine-wave generator digital potenciometer discrete synthesizer microcontroller |
| Parallel title (English) | Magnetic field generator design for radiated electromagnetic compatibility testings |
| Committee Members | Adrijan Barić (committee chairperson)
Adrijan Barić (committee chairperson)
Tvrtko Mandić (committee member)
Igor Krois (committee member)
Niko Bako (committee member)
Vladimir Čeperić (committee member)
|
| Granter | University of Zagreb
Faculty of Electrical Engineering and Computing |
| Place | Zagreb |
| State | Croatia |
| Scientific field, discipline, subdiscipline | TECHNICAL SCIENCES
Computing
|
| Study programme type | university |
| Study level | undergraduate |
| Study programme | Computing |
| Academic title abbreviation | univ.bacc.ing.comp. |
| Genre | undergraduate thesis |
| Language | Croatian |
| Defense date | 2014-09-10 |
| Parallel abstract (English) | The main objective of this asignment is to design a system that will generate electromagnetic field ranging 60 dBuA/m to 120 dBuA/m at frequencies from 300 kHz to 1.2 MHz. In this project loop anntena (N = 3 ; = 30 cm) is used. The maximum current needed for generating desired EM field is 200 mA. A signal, which induces EM field, is generated with sine-wave generator that is made of direct digital synthesizer (DDS), based on a chip AD9832, digital potenciometer, based on a chip DS1267, and of a section for additional amplitude adjustment, based on a operational amplifier CA3140. The whole system is controlled by Arduino Due platform, programmed in 1.5.6 - r2 BETA. The Arduino sends digital code words to DDS, which generates a signal with specific amplitude and frequency. Arduino Due also communicates with DS1267. The adittional section for adjusting the amplitude, which is in fact the basic inverting operational amplifier, is controlled physically by the user. The electrical current through the antenna is measured with a current probe. |
| Parallel keywords (Croatian) | elektromagnetsko polje generator signala digitalni potenciometar diskretni sintetizator mikroračunalo |
| Resource type | text |
| Access condition | No public access |
| Terms of use |  |
| URN:NBN | https://urn.nsk.hr/urn:nbn:hr:168:781754 |
