System and method of detecting driving conditions for a motor vehicle
US7350945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2005 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Jan 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/46
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for a motor vehicle for detecting driving conditions on a road, including a nebulosity, the range of visibility in the presence of a nebulosity or the distance between an obstacle in the road and the motor vehicle. The system includes a headlight which emits a visible light beam and an infrared light beam, at least one light sensor which receives at least a portion of the infrared beam reflected back to the vehicle, a optical device for directing at least a part of the reflected infrared beam to the light sensor and a device for detecting the modulated signal of the reflected infrared beam and determining at least one driving condition based on a comparison of the reflected infrared beam modulated signal and the corresponding emitted infrared beam modulated signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.