System and method for detecting particles
US10254209B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2015 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Sep 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/0038
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for detecting particles, including: a first device to measure concentration of particles, including an electrometer measuring device coupled to a charger and/or to an optical particle counter; a second device to measure concentration of particles, including a condensation nuclei counter; a calculation unit configured to calculate a ratio and/or a difference between a first measurement of the particle concentration in an airflow, to be performed by the first measurement device, and a second measurement of the particle concentration in an airflow, to be performed by the second measurement device, and configured to provide a comparison between the ratio and/or the difference between the first and second measurements and a threshold value to determine presence of particles of interest other than ambient air particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.