Method and apparatus for detecting vehicle occupants under the influence of alcohol
US5349187A · kind A · utility
5Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1993 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Nov 1, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/4972
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for non-intrusive drunk driver screening comprising a wavelength modulated laser, harmonic detector, and signal analyzer apparatus for quantitative absorption spectroscopy detection of low level concentrations of alcohol molecules in a contained gaseous volume within the operator compartment of vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.