Systems and methods for detecting particles
US7721588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2007 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | May 3, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/024
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of detecting particles during inspection is provided. The method includes establishing a security checkpoint including a detection system, wherein the detection system includes a chamber defining a passage and includes a plurality of jets. The method also includes passing an individual through the passage, enhancing a convection plume including particles from the individual by blowing air through at least one of the plurality of jets, and absorbing the particles in a preconcentrator including a filter encased in a frame having a high thermal conductivity. Moreover, the method includes evaporating the particles absorbed in the preconcentrator and using a detector to determine whether the particles are from at least one of an explosive material and a narcotic substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.