Electronic airbag control unit having an autonomous event data recorder

US8229630B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Thomas Klug · Augsburg, DE
• Timo Dittfeld · Munich, DE
• Frank Auer · Herbrechtingen, DE

Key dates

• Filing date: Feb 11, 2008
• Grant date: Jul 24, 2012
• Expiry date: Mar 8, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C5/085
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Embodiments of the present invention relate generally to an electronic control unit for an airbag, said control unit having a data recorder unit that has a volatile memory, a nonvolatile memory and a copy circuit. The copy circuit is designed to copy data from the volatile memory to the nonvolatile memory during a second operating phase of the control unit. A protocol unit designed to record vehicle and/or accident data in the volatile memory is arranged in the data recorder unit during a first operating phase of the control unit. A first power supply unit is connected to the control unit and supplies the protocol unit and further components of the control unit with power and a second power supply unit is connected to the data recorder unit and supplies the latter with power.