Pressure-based airflow sensing in particle impactor systems
US9810558B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2015 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Mar 12, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/245
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are systems and methods for accurate sensing of particle concentrations in fluids by employing a particle impactor system that allows for collection, growth and analysis of biological particles. The disclosed systems and methods make use of a pressure based flow sensor which permits the particle impactor system systems to accurately and reliably provide measurements of biological particle concentrations in the ambient environment. By incorporation of pressure sensors and pressure measurements into the flow measurement techniques, embodiments provide for the ability to use a particle impactor system to accurately measure environmental biological particle concentrations at a variety of atmospheric pressure conditions, such as at high altitude or with minimal perturbation from atmospheric weather conditions, without requiring recalibration or other adjustment of the sensors and control systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.