Algorithm for determining travel direction for automobiles
US6577948B1 · kind B1 · utility
17Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2002 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Sep 18, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining the direction of travel of a vehicle independent of the transmission gear position. A plurality of yaw rate values are utilized, which are summed or integrated over a period of time to generate a plurality of yaw rate sum values. The sign of each yaw rate sum value is compared. This comparison of the signs of each yaw rate sum value results in a confidence value that is used to determine the direction of travel. Preferably, the actual gear position, a calculated gear ratio, and the vehicle's velocity are used to build confidence in the resulting confidence value given above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.