TP16 - Influences on the Sensitivity of Camera-Based Colorimetric Gas Sensors Systems
- Event
- EUROSENSORS XXXVII
2025-09-07 - 2025-09-10
Wroclaw - Band
- Poster II
- Chapter
- Bio/chemical and Environmental Sensors
- Author(s)
- S. Hoffmann - Fraunhofer EMFT, Munich (Germany), S. Trupp - Bundeswehr University Munich, Neubiberg (Germany)
- Pages
- 381 - 382
- DOI
- 10.5162/EUROSENSORS2025/TP16
- ISBN
- 978-3-910600-07-2
- Price
- free
Abstract
Colorimetric gas sensors detect analytes through a color-changing reaction of a sensor material. This work shows how light sources and image formats affect the sensitivity of camera-based colorimetric sensor. For this work, bromocresol green was embedded in polyvinyl chloride for NH₃ detection. Three white LEDs with different color temperatures were tested, revealing that the neutral white LED exhibited the highest sensitivity. Furthermore, RAW image data provided the best results due to its higher bit depth compared to JPG and PNG formats, significantly enhancing sensor system sensitivity.