2.2.6 - A portable and Low-Cost Spirometer with Knife-Edge Optical Detection
- Event
- EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich - Band
- Lectures
- Chapter
- Optical Sensors
- Author(s)
- Pages
- 91 - 92
- DOI
- 10.5162/eurosensors2026/2.2.6
- ISBN
- 978-3-910600-12-6
- Price
- free
Abstract
We present a portable, low-cost optical spirometer that overcomes moisture-induced degradation of resistive sensors. A compliant double-leaf structure modulates transmitted light intensity under airflow, eliminating electrical elements from the airflow path. We demonstrate a linear optical response up to 160 kPa input flow pressure and distinguishable breathing patterns across multiple subjects, confirming the system's potential as a scalable disposable respiratory monitoring device.