Method and device for recognition of a collision with a pedestrian

US6784792B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Bernhard Mattes · Sachsenheim, DE
• Gottfried Flik · Leonberg, DE

Key dates

• Filing date: Jul 1, 2002
• Grant date: Aug 31, 2004
• Expiry date: Jul 1, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R21/34
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method of deciding with a high reliability whether an impact with the front side of a vehicle has been caused by a pedestrian is described. Two decision criteria are formed, and only if both decision criteria are met is it decided an impact with a pedestrian has occurred. The first decision criterion is determined by the fact that the pressures or deformations measured by a sensor on the bumper and a sensor in the area of the front edge of the engine hood are compared with reference quantities typical of impact with a pedestrian. The second decision criterion is determined by the fact that the changes in velocity and/or acceleration of the vehicle caused by an impact are determined, and then the changes in velocity and/or acceleration are compared with reference quantities which are typical of impact with a pedestrian.