Method of determining a roadway curve radius
US6393376B1 · kind B1 · utility
5Cited by
15References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1999 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Aug 4, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2210/24
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A curve radius of a roadway is determined by measuring the difference in wheel speed of at least two vehicle wheels and the rate of yaw of the vehicle, and hence the curve radius, is determined therefrom. The wheel speeds are determined by measuring the time required for the wheel to rotate by a fixed rotational angle, based on a fixed number of pulses produced by a pulse transmitter which is part of an ABS or ASR system for the vehicle. The method provides considerably improved accuracy using simple, vehicle-contained components and various parameters can be taken into account simultaneously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.