Diseño e implementación de un espirómetro con sistema de adquisición de datos e interfaz para PC para el análisis de pruebas pulmonares en personas mayores de 50 años

Abstract

This thesis presents the design and implementation of a digital spirometer with data acquisition system and PC interface for the analysis of pulmonary tests in people over 50 years of age. This spirometer is a key biomedical device for assessing lung function and detecting respiratory diseases. The project aims to optimise health services through advanced technology, integrating electronic and scientific expertise. Spirometry is crucial for the early detection of diseases such as asthma and COPD, improving patients’ quality of life. The spirometer is portable, easy to use and fully computerised, and complies with international standards. It uses a pressure sensor connected to an ESP32 microcontroller, which sends data to a PC for analysis. The MATLAB-based graphical interface allows real-time display of volume-time and flow-volume plots. Validation with an oscilloscope and a commercial device demonstrated the accuracy and reliability of the spirometer. This accessible, low-cost tool helps detect and monitor respiratory diseases, improving lung health.