Simultaneous Airflow and Pressure Measurements Based on Pitot Tube for Evaluation of Expired Air Inside Lung Airway
- Resource Type
- Conference
- Authors
- Miyawaki, Aoi; Al Farisi, Muhammad Salman; Hasegawa, Yoshihiro; Matsushima, Miyoko; Kawabe, Tsutomu; Shikida, Mitsuhiro
- Source
- 2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers) Solid-State Sensors, Actuators and Microsystems (Transducers), 2023 22nd International Conference on. :1888-1891 Jun, 2023
- Subject
- Bioengineering
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Robotics and Control Systems
Pressure sensors
Ventilators
Optical fiber sensors
Fluid flow measurement
Transducers
Lung
Sensor systems
Pitot Tube
Flow Sensor
Pressure Sensor
Expiration
- Language
- ISSN
- 2167-0021
In this study, we propose a novel sensor probe system consisting of a basket forceps and two pressure sensors to simultaneously measure the expiratory airflow and the static pressure inside the pulmonary airway. A Pitot tube mechanism using two pressure sensors is introduced in the system for measuring both the physical quantities. Small fiber-optic pressure sensors with 0.3 mm diameter were utilized, and both the airflow rate and the static pressure characteristics were evaluated for obtaining the calibration curves. Finally, the proposed sensor system was implemented to measure both the airflow and pressure in an artificial ventilator and an experimental animal. The measurement of expired airflow and static pressure inside the airway of a rat with the diameter of 1.8 mm were demonstrated.