Circuit arrangement for registering false release signals for a restraint system

US4641041A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Bernhard Mattes · Sachsenheim, DE
• Eberhard Mausner · Ludwigsburg, DE
• Wadym Suchowerskyj · Schwieberdingen, DE

Key dates

• Filing date: Jun 19, 1985
• Grant date: Feb 3, 1987
• Expiry date: Jun 19, 2005

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2021/01197
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention is directed to a circuit arrangement for the recording of false release signals for a restraint system such as an air bag system or a seat belt tensioning system in a vehicle. In this circuit arrangement, a release circuit including a first deceleration sensor and an evaluation circuit generates a release signal in the event of a deceleration caused by an accident. This release signal, however, becomes effective only if, at the same time, a second release circuit including a second deceleration sensor 17 responds, thereby triggering the restraint system. A monitoring circuit for monitoring the occurrence of a release signal without a concurrent response of the second release circuit will activate a warning device and inform the operator of the vehicle of the malfunction.