Collision warning system and method for a motor vehicle

US7259661B2 · kind B2 · utility

Assignee

• Wabco GmbH & Co. Ohg. · DE

Inventors

• Hartmut Kitterer · Hannover, DE
• Frank Zielke · Barsinghausen, DE
• Karsten Breuer · Rodenberg, DE
• Dirk Sandkuhler · Bad Sassendorf, DE

Key dates

• Filing date: Jan 24, 2005
• Grant date: Aug 21, 2007
• Expiry date: Aug 15, 2025

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60W2050/143
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A collision warning system and method for a motor vehicle. A measuring device in the vehicle is provided for measuring the distance dx to a second vehicle traveling ahead, the distance signal being delivered to an evaluation device in the first vehicle. The evaluation device continuously calculates a deceleration asubject vehicle demand, which is applied by the vehicle after expiration of a driver reaction time Treaction in order that a remaining distance dxremaining to the second vehicle traveling ahead can be maintained. If asubject vehicle demand exceeds an instantaneous deceleration that can be achieved by an adaptive cruise control (“ACC”) system, a system limit warning is transmitted, prompting the vehicle driver to brake with additional appropriate force. If asubject vehicle demand exceeds an assumed vehicle deceleration that can be generated by braking on the part of the driver, a collision warning signal is transmitted independently of the ACC system.