Design, Development, and Performance Evaluation of a Portable Arduino-Based Spirometer Using an MPX5500DP Pressure Sensor

Fauzyah Aprillia; Fauziah Putri Ramadani; Keysa Rahel Amanda; Aufa Silfa Nofriand

doi:10.55927/ajmee.v5i1.17257

Authors

Fauzyah Aprillia Faculty of Vocational Studies, Universitas Baiturrahmah, Padang
Fauziah Putri Ramadani Radiology Study Program, Faculty of Vocational Studies, Universitas Baiturrahmah, Padang
Keysa Rahel Amanda Radiology Study Program, Faculty of Vocational Studies, Universitas Baiturrahmah, Padang
Aufa Silfa Nofriand Radiology Study Program, Faculty of Vocational Studies, Universitas Baiturrahmah, Padang

DOI:

https://doi.org/10.55927/ajmee.v5i1.17257

Keywords:

Spirometer; MPX5500DP; Arduino Uno; FVC; FEV1.

Abstract

Spirometry is an important examination for assessing pulmonary function by measuring parameters such as Forced Vital Capacity (FVC) and Forced Expiratory Volume in One Second (FEV1). Conventional spirometers are generally relatively complex and may require dedicated equipment and interfaces. This study aimed to develop and evaluate a portable spirometer based on an Arduino Uno microcontroller and an MPX5500DP pressure sensor. The system was designed to acquire expiratory pressure, process the sensor signal, calculate pulmonary function parameters, and display the measurement results and spirogram through a 3.5-inch Nextion display. User characteristics, including age, sex, and height, were incorporated into the system for comparison with predicted pulmonary function values. System performance was evaluated using 1-L and 3-L calibration syringes, with five repeated measurements for each reference volume. The mean measured volume was 0.994 L for the 1-L reference and 2.992 L for the 3-L reference, corresponding to mean measurement errors of 1.00% and 0.67%, respectively. These results indicate that the developed prototype demonstrated relatively good agreement with the calibration syringe at the tested volumes. The prototype provides an integrated platform for portable pulmonary function measurement and graphical visualization. Further validation using a calibrated clinical spirometer and a larger number of measurement points is required before clinical application

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