التفاصيل البيبلوغرافية
| العنوان: |
Design and Validation of a Holographic Particle Counter |
| المؤلفون: |
Georg Brunnhofer, Alexander Bergmann, Andreas Klug, Martin Kraft |
| المصدر: |
Sensors; Volume 19; Issue 22; Pages: 4899 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2019 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
Condensation Particle Counter, in-line holography, Hough Transform, coincidence correction |
| الوصف: |
An in-line holographic particle counter concept is presented and validated where multiple micrometer sized particles are detected in a three dimensional sampling volume, all at once. The proposed Particle Imaging Unit is capable of detecting holograms of particles which sizes are in the lower μ m- range. The detection and counting principle is based on common image processing techniques using a customized Hough Transform with a result directly relating to the particle number concentration in the recorded sampling volume. The proposed counting unit is mounted ontop of a Condensation Nucleus Magnifier for comparison with a commercial TSI-3775 Condensation Particle Counter (CPC). The concept does not only allow for a precise in-situ determination of low particle number concentrations but also enables easy upscaling to higher particle densities (e.g., > 30.000 # c c m ) through its linear expandability and option of cascading. The impact of coincidence at higher particle densities is shown and two coincidence correction approaches are presented where, at last, its analogy to the coincidence correction methods used in state-of-the-art CPCs is identified. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Optical Sensors; https://dx.doi.org/10.3390/s19224899 |
| DOI: |
10.3390/s19224899 |
| الاتاحة: |
https://doi.org/10.3390/s19224899 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.FE3BB1E0 |
| قاعدة البيانات: |
BASE |