6533b85ffe1ef96bd12c1268
RESEARCH PRODUCT
FPGA based digital lock-in amplifier for fNIRS systems
Leonardo MistrettaC. GiaconiaGiuseppe GrecoRaimondo Rizzosubject
010302 applied physicsComputer scienceAmplifier0206 medical engineeringLock-in amplifierDigital lock-in amplifier02 engineering and technology020601 biomedical engineering01 natural sciencesNoise floorSettore ING-INF/01 - ElettronicaSilicon photomultiplier (SiPM)Quality (physics)0103 physical sciencesElectronic engineeringContinuous waveFunctional near-infrared spectroscopyField-programmable gate arrayFpgaFunctional near-infrared spectroscopydescription
Lock-In Amplifiers (LIA) represent a powerful technique helping to improve signals detectability when low signal to noise ratios are experienced. Continuous Wave functional Near Infrared Spectroscopy (CW-fNIRS) systems for e-health applications usually suffer of poor detection due to the presence of strong attenuations of the optical recovering path and therefore small signals are severely dipped in a high noise floor. In this work a digital LIA system, implemented on a Zynq® Field Programmable Gate Array (FPGA), has been designed and tested to verify the quality of the developed solution, when applied in fNIRS systems. Experimental results have shown the goodness of the proposed solutions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-07-13 |