Warning system for vehicle
US5757949A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Jan 24, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K31/0008
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A warning system estimates the possibility of the off-course travel of a vehicle while traveling through a curve before the vehicle enters the curve and gives the driver a warning properly. The warning system comprises an image recognizing means for obtaining three-dimensional image data on the road extending ahead of the vehicle and the traffic environment lying ahead of the same by recognizing conditions of the road and the traffic, a curve detecting means for detecting a curve on the basis of the image data before the vehicle enters the curve, a turning speed calculating means for calculating a reference turning speed at which average drivers will drive the vehicle traveling the curve on the basis of the radius of curvature of the curve and the width of the lane represented by the image data, a relative curve sharpness detecting means for deciding whether or not the relative sharpness of the curve is critical by comparing the reference turning speed with the actual traveling speed of the vehicle, and an off-course travel estimating means for deciding, when the relative sharpness detecting means decides that the relative sharpness of the curve is critical, whether or not the driv…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.