Sensor system for passive in-vehicle breath alcohol estimation
US11104227B2 · kind B2 · utility
2Cited by
72References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2016 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | May 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/4972
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus allow for passive determination of a driver's Breath Alcohol Concentration (BrAC). Alcohol concentrations can be determined from exhaled breath, however inconvenience to a driver is often a barrier for incorporation of BrAC sensors into vehicles. The methods and apparatus allow for passive determination of a driver's BrAC, while detecting and accounting for a wide range of environmental conditions that may reduce the accuracy of a passive BrAC reading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.