2021 Volume 91 Issue 5 Pages 433-438
Respiratory diseases include restrictive diseases such as pulmonary fibrosis, obstructive diseases such as COPD (Chronic Obstructive Pulmonary Disease), and mixed diseases.All of which are serious and require early diagnosis. Lung function tests for respiratory diseases are performed using Spirometry and X-ray CT in the Hospital. We have been studying to construct a non-invasive and simple pulmonary function diagnosis system. In this paper we report on a method of measuring ventilation volume using a three axis acceleration sensor and a three dimension depth sensor.