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|a Novoselec, Filip
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|a Sustav za prikupljanje biomedicinskih signala :
|b završni rad /
|c Filip Novoselec ; [mentor Mario Cifrek].
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|a Biomedical Signal Acquisition System
|i Naslov na engleskom:
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|a Zagreb,
|b F. Novoselec,
|c 2017.
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|a 33 str. ;
|c 30 cm +
|e CD-ROM
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|b preddiplomski studij
|c Fakultet elektrotehnike i računarstva u Zagrebu
|g smjer: Elektroničko i računalno inženjerstvo, šifra smjera: 35, datum predaje: 2017-06-09, datum završetka: 2017-07-10
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|a Sažetak na hrvatskom: U sklopu ovog završnog rada osmišljen i izveden je sustav za mjerenje biomedicinskih
signala. Uređaj mjeri 3 vrste biomedicinskih signala, a to su elektroencefalografski, elektrokardiografski i elektromiografski. Kao mikroprocesorska platforma odabran je Raspberry Pi.
Kako su mjereni signali izrazito malih amplituda značajan zahtjev sustava je bila niska razina šuma. Sustav odudara od standardnog mjernog sustava za biomedicinske signale po tome što se signal prevodi u digitalni oblik bez prethodnog pojačavanja njegove amplitude, kao što je obično slučaj. Kako bi se to bilo moguće sustav je temeljen na niskošumnom analogno-digitalnom pretvorniku AD7768-4. AD7768-4 je 24-bitni analogno-digitalni pretvornik te uz korištenje referentnog izvora od 4.096 V omogućava rezoluciju od 488 nV u izlaznom digitalnom signalu.
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|a Sažetak na engleskom: Biomedical signal acquisition system was designed and implemented as part of this Bachelor’s Thesis. The device is able to collect and measure 3 types of biomedical signals, which are electroencephalogram (EEG), electrocardiogram (ECG) and electromyogram (EMG). Raspberry Pi was chosen as a microprocessor platform.
As the measured signals are of extremely small amplitudes, a significant attention was dedicated to making noise levels as low as possible. The system deviates from the standard biomedical signal measurement system by translating the signal into a digital form without amplifying its amplitude first, as is usually the case. In order to do so, the system was based on a low power analog-to-digital converter (ADC) AD7768-4. AD7768-4 is a 24-bit, low noise, ADC and, by using reference source of 4.096V, is able to provide resolution of 488 nV in the digital output signal.
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|a biomedicinski signali, elektroencefalografsko (EEG) pojačalo, elektrokardiografsko (EKG) pojačalo, elektromiografsko (EMG) pojačalo, Raspberry Pi
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|a Biomedical signals, Electroencephalogram (EEG) amplifier, Electrocardiogram (ECG) amplifier, Electromyogram (EMG) amplifier, Raspberry Pi
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|a Cifrek, Mario
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