E7.1 - Miniaturized SMD-Reflow-Capable Photoacoustic CO2-Sensor Using a Dual-Chamber Approach
- Event
- SMSI 2023
2023-05-08 - 2023-05-11
Nürnberg - Band
- Lectures
- Chapter
- E7 - New Measurement and Sensor Approaches
- Author(s)
- S. Gaßner, K. Schmitt, J. Wöllenstein - University of Freiburg, Freiburg (Germany), D. Tumpold - Infineon Technologies AG, Neubiberg (Germany), S. Essing - Technical University of Munich, München (Germany)
- Pages
- 272 - 273
- DOI
- 10.5162/SMSI2023/E7.1
- ISBN
- 978-3-9819376-8-8
- Price
- free
Abstract
The increasing interest in monitoring indoor air quality has led to a growing demand for simple and smallscale gas sensors. We present a miniaturized photoacoustic dual chamber sensor module that includes an infrared hotplate emitter and a wafer-level manufactured photoacoustic detector. The sensor module was controlled by a PSoC 4200M microcontroller and is capable of being soldered in a SMD reflow soldering process. The sensor prototype achieves a 3‑sigma noise level of 138 ppm CO2, which is suitable for most consumer applications.