Device for controlling firing circuits for restraining devices

US6803673B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Jens Otterbach · Wenden, DE
• Hartmut Schumacher · Freiberg, DE
• Peter Taufer · Renningen, DE
• Achim Henne · Sachsenheim, DE
• Harald Tschentscher · Bornsteiner Straße, DE
• Michael Ulmer · Lingen (Ems), DE
• Andreas Rupp · Erbach, DE

Key dates

• Filing date: Nov 21, 2001
• Grant date: Oct 12, 2004
• Expiry date: Feb 14, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2021/01027
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A device for controlling firing circuits for restraining devices, a processor and a safety IC for controlling the restraining devices being connectable to the firing circuit control, and the firing circuit control having blocking inputs and blocking registers for the blocking of groups of connectable firing circuits; the processor setting the blocking registers after switching-on (of the device) and logically linking the firing circuit control data of the blocking inputs and the blocking registers with one another, so as to block individual groups of firing circuits. Thus it is especially possible individually to block firing circuits for air bags in dependence upon the degree of occupancy and the classification of the occupants in a vehicle. Setting the blocking inputs and the blocking registers takes place shortly after switching-on (of the device), after function tests of the IC's have been conducted. Besides the blocking inputs for individual control, the firing circuit control also has blocking inputs for blocking all plus and minus output stages.