Breath alcohol sampling system with spirometric client identity confirmation
US9192324B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2011 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Dec 19, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/37
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An system for monitoring alcohol in the breath of a test client confirms the identity of the test client based on spirometric data. The system includes a sample chamber receiving a breath sample, an alcohol sensor measuring the alcohol content of the breath sample, and a spirometric sensor generating spirometric data from the breath sample over the test client's entire exhalatory phase. A processor analyzes the spirometric data with stored client characterization data for a known client to confirm the identity of the test client. The client characterization data can be a probability density in a phase space in which at least two spirometric variables (e.g., flow and volume time-series data) are correlated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.