Method of establishing baseline filter for air quality
US6298291A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1999 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Dec 22, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H3/0085
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of establishing a baseline filter for an air quality sensor in a motor vehicle includes the step of providing an air quality sensor for intake air into an occupant compartment of the motor vehicle. The method also includes the step of establishing a moving baseline for a background signal level from the air quality sensor. The method further includes the step of shutting off intake air into an occupant compartment of the motor vehicle when the background signal level exceeds a certain threshold above the moving baseline, thereby preventing undesired gases in the intake air from reaching occupants in the occupant compartment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.