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undergraduate thesis
Implementacija jednokanalnog EKG pojačala
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2019. urn:nbn:hr:168:272423
Polondak, Kvirin
University of Zagreb
Faculty of Electrical Engineering and Computing

Institutional repository: FER Repository

Cite this document

Polondak, K. (2019). Implementacija jednokanalnog EKG pojačala (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:272423

Polondak, Kvirin. "Implementacija jednokanalnog EKG pojačala." Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2019. https://urn.nsk.hr/urn:nbn:hr:168:272423

Polondak, Kvirin. "Implementacija jednokanalnog EKG pojačala." Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2019. https://urn.nsk.hr/urn:nbn:hr:168:272423

Polondak, K. (2019). 'Implementacija jednokanalnog EKG pojačala', Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 03 June 2024, https://urn.nsk.hr/urn:nbn:hr:168:272423

Polondak K. Implementacija jednokanalnog EKG pojačala [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2019 [cited 2024 June 03] Available at: https://urn.nsk.hr/urn:nbn:hr:168:272423

K. Polondak, "Implementacija jednokanalnog EKG pojačala", Undergraduate thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:168:272423

Metadata
TitleImplementacija jednokanalnog EKG pojačala
Title (english)Implementation of a Single Channel ECG Amplifier
AuthorKvirin Polondak
MentorMario Cifrek (mentor)
Committee memberMario Cifrek (predsjednik povjerenstva)
Committee memberKrešimir Friganović (član povjerenstva)
Committee memberIvana Čuljak (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
Zagreb
Defense date and country2019-09-02, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Computing
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Abstract
U sklopu ovog Završnog rada napravljen je kratak pregled uređaja za mjerenje bioelektričkih potencijala u svrhu razumijevanja načina njihovog rada. Promatrane su osnovne karakteristike i način rada: EEG, EMG, ERG i EGG. Jednako tako analiziran je i EKG kako bi se odredilo koji su najbitniji zahtjevi kod projektiranja EKG pojačala. Dizajnirane su dvije tiskane pločice. Na prvoj tiskanoj pločici implementiran je analogni dio uređaja koji filtrira signal i pojačava ga kako bi bio pogodan za analogno digitalnu pretvorbu. Uređaj se sastoji od pretpojačala izvedenog sa instrumentacijskim pojačalom INA188, visokopropusnog RC filtra čiju je graničnu frekvenciju moguće podesiti na 0,5 ili 0,05 Hz. Niskopropusni filtar granične frekvencije 150 Hz. Filtar je realiziran korištenjem operacijskog pojačala OPA2277. Istim pojačalom realizirana su dva neinvertirajuća pojačala ukupnog pojačanja 200. Ukupno pojačanje EKG pojačala je 1000 puta. Uz to na prvoj tiskanoj pločici implementiran je „sklop za pogon desne noge“ čija je uloga otklanjanje istosmjernih smetnji. Na drugoj tiskanoj pločici implementirana je analogno digitalna pretvorba korištenjem jednokanalnog analogno digitalnog pretvornika ADS1251. Tiskane pločice jednakih su dimenzija 40 x 42 mm. Izlazni signal dovodi se na računalo gdje je proveden prikaz podataka u programskom okruženju MATLAB. Ključne riječi: srce, EKG pojačalo, tiskana pločica, sklop za pogon desne noge, analogno digitalna pretvorba
Abstract (english)
In this paper is made a short review of bioelectrical measuring devices in order to fully understand how they work. The way of functioning and basic characteristics of EEG, EMG, ERG and EGG have been analyzed. ECG has been analyzed in the same manner to determine requirements for designing the ECG amplifier. Two PCB (printed circuit board) has been designed. Analog part of the device has been made on the first PCB. The role of the analog part of the device is amplifying and filtering signal to adjust it before analog-digital conversion. Parts of the device are: preamp made with INA188, high-pass filter with an adjustable cutoff frequency of 0.5 Hz or 0.05 Hz. Low-pas filter is made using an OPA2277 with a cutoff frequency of 150 Hz. Two noninverting amplifiers with total gain of 200 are also made using the OPA2277 amplifier. Total gain of ECG amplifier is 1000. On the first PCB is right leg drive, part of a device that removes DC noise. Analog-digital conversion is made using one channel ADC ADS1251 that is mounted on the second PCB. Two PCBs are the same dimensions 40 x 42 mm. The output of the device is sent to the computer where the data is shown in a MATLAB computing environment.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:272423
Study programmeTitle: Electrical Engineering and Information Technology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije)
Type of resourceText
File originBorn digital
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Created on2020-01-07 21:28:31