Curve approaching mode controller
US6424904B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Sep 19, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2520/125
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A curve approaching mode controller is capable of continuing vehicle control operations for the longest possible time even if curve information is not available from a navigation system. The navigation system provides curve information about a curve on a road stretching ahead of a vehicle. A control unit estimates a curve approaching mode in which the vehicle will approach the curve on the basis of the curve information and, when necessary, gives a warning and executes a decelerating control operation. If only insufficient curve information is available from the navigation system, a road attribute calculating and storing unit stores the normal node information received immediately before receiving the insufficient node information (curve information) without updating the same, and informs a warning speed calculating and storing unit of a fact that the node information is insufficient. A warning speed calculating and storing unit calculates a warning speed that serves as a reference for warning on the basis of the normal node information received immediately before receiving the insufficient node information, taking a distance traveled by the vehicle after the insufficient node info…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.