Preventing the collision of a vehicle with an obstacle

US6342832B1 · kind B1 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Alexander Fuchs · Tuttlingen, DE
• Wolfgang Kiesewetter · Waiblingen, DE
• Bernd Knoff · Jeffery Road, DE
• Carsten Lauer · Stuttgart, DE
• Lorenz Maack · Eppelheim, DE
• Eberhard Pfeifle · Lorch, DE
• Manfred Steiner · Rennweg am Katschberg, AT

Key dates

• Filing date: Jun 22, 2000
• Grant date: Jan 29, 2002
• Expiry date: Jun 22, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S2013/93272
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A process and device are disclosed for preventing a vehicle from colliding with an obstacle during parking. The object of the invention is therefore to ensure that a collision can be reliably avoided without any additional intervention of the drive. In a device with at least one sensor for generating signals which represent the distance between the vehicle and an obstacle, the signals are processed in an evaluation unit. When at least one distance-representing signal falls below a limit value, a warning signal is generated. This warning signal drives a control valve which generates a pressure difference between the working chamber and the vacuum chamber in a brake booster when the warning signal is generated. This pressure difference causes the braking pressure to rise in the wheel brake cylinder and therefore slows the vehicle down to a standstill.