Firing control device for triggering a passenger restraint system of a vehicle

US5327014A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Anton Huber · Burghausen, DE
• Dieter Neugebauer · Schweinfurt, DE
• Marten Swart · Obertraubling, DE

Key dates

• Filing date: Dec 7, 1992
• Grant date: Jul 5, 1994
• Expiry date: Dec 7, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R21/0173
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A firing control device (G) for triggering a passenger restraint system of a vehicle by electrically firing one or more firing pellets (Z1, Z2), having a processor (P) which, during operation, criteria for the necessity of triggering derives from the output signals of one or more crash sensors (S1, S2), having at least one measuring unit (R/DR, DZ1, DZ2) which, during a crash, measures at least the firing current (I1, I2) flowing through the respective firing pellets (Z1, Z2) and/or values (for example voltages) which depend on said firing current (I1, I2), having a PROM memory (M), and having a measuring unit (R/DR) which (R/DR) contains a measuring resistor (R) which is inserted into the firing circuit (I1, I2) of the firing pellet (Z1, Z2) so as not to be usually directly accessible from the outside via external terminals (A0 to A5) of the housing (G) of the firing control device in order to determine data relating to the variation of the firing current (I1, I2) flowing across the resistor (R) during triggering. In the event of a crash, data, from which it can later be detected whether and how the passenger restraint system triggered during the crash, is written into the PROM me…