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All Journal Bulletin of Electrical Engineering and Informatics Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Piston: Journal of Technical Engineering Buletin Ilmiah Sarjana Teknik Elektro Makara Journal of Technology JHeS (Journal of Health Studies) International Journal of Electrical, Computer, and Biomedical Engineering (IJECBE)
Tomy Abuzairi
Departemen Teknik Elektro, Fakultas Teknik, Universitas Indonesia
Aerospace Engineering Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health

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Effect of Filters in Photoplethysmography Analog Signals Using Open-Source LTspice Software Pandi; Abuzairi, Tomy
International Journal of Electrical, Computer, and Biomedical Engineering Vol. 2 No. 1 (2024)
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62146/ijecbe.v2i1.32

Abstract

Analog signal processing plays a crucial role in the realm of biomedical signal analysis. This study investigates the application of analog signal processing techniques in the domain of biomedical signals, focusing on enhancing the quality and reliability of recorded physiological data. The primary emphasis is on the implementation of analog filters and amplifiers to address challenges such as noise reduction, signal conditioning, and overall signal improvement. The processing of physiological signals, such as photoplethysmography (PPG), necessitates the use of amplifiers and filters within a range of 0.4 to 5Hz. Signal noise can stem from various sources, including the test subject’s muscle movement, respiration, humming, power line interference, or even from the device itself. The research methodology involves a comparison of 3 different order of Butterworth filter circuits and their impact on the signal. The test input signal is derived from an SpO$_2$ simulator, read by a standard PPG sensor, and processed by the internal 12-bit ADC of Nucleo-F429ZI. The resulting data is stored in CSV format for subsequent use in filter design simulations with SPICE. For analog circuit designers, the utilization of SPICE in the form of LTspice proves invaluable. This open software, LTspice, boasts a simple yet powerful interface, facilitating a focus on the conceptualization and performance of the design
Co-Authors Adam Febriyanto Nugraha Ajinugroho, Fajar Arie Kusumaningrum Bohr-Ran Huang Bohr-Ran Huang, Bohr-Ran Dimas Agung Setiaji Junivan Sulistianto Maurice Efroza Mochamad Chalid Muchamad Syahrul Gunawan Naufal Inas Fikri Nji Raden Poespawati Nurdina Widanti Pandi Rahmalisa Suhartina Ralfi Wibowo Rachmad Retno Wigajatri Purnamaningsih Rizqy Pratama Rahman Siti Fauziyah Solly Aryza Tzu-Ching Lin Tzu-Ching Lin, Tzu-Ching Vito Louis Nathaniel Yeni Rustina