Pratondo Busono, Dena Karunianto Wibowo, Bagus Bakti Irawan, Widar Dwi Gustian, Rony Febryarto, Riyanto Riyanto, Nailul Rahmi Aulya, Indra Gunawan
Airflow sensor is an important component in medical ventilators. It measured the air flow rate, tidal volume, and minute volume delivered to the patient. During the COVID-19 pandemic, airflow sensors were not locally available due to international demand; also, their design and fabrication for this medical application require complex processes and standards. This work aimed to develop flow sensors for medical ventilators. Two types of airflow sensors have been created: orifice-based flow sensors and venturi-based flow sensors. Methods for flow sensor development include defining design specifications, developing CAD design, choosing the material for housing, 3D printing, flow sensor assembly, testing, and calibration. Performance analysis was performed for accuracy, precision, and linearity across the desired flow range encountered in mechanical ventilation. The prototypes of flow sensors have also been compared their performance to commercially available flow sensors. Using a statistical analysis t-test, it was observed that there was no difference in performance between the prototypes and the commercial flow sensors. These airflow sensors had been installed in the automatic airbag ventilator #BPPT3S-POLY for measuring the tidal volume and minute volume delivered to the patients. © 2024 Author(s).
Research Center for Intelligent Mechatronics, BRIN, KST Samaun Samadikun, Cisitu, Bandung, Indonesia; Research Center for Electronics, BRIN, KST BJ Habibie, Tangerang Selatan, Serpong, Indonesia; Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta, 13220, Indonesia; School of Biosciences and Medical Engineering, Faculty Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
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