Method for triggering a vehicle occupant restraint device

• US 7,627,409 B2
• Filed: 02/13/2006
• Issued: 12/01/2009
• Est. Priority Date: 10/25/2001
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Link, Andrea, Urbahn, Jan, Watzka, Willibald
• Primary Examiner(s): Tran; Khoi
• Assistant Examiner(s): JEN, MINGJEN
• Application Number:
  US11/352,254
• Publication Number:
  US 20070247290A1
• Time in Patent Office: 1,387 Days
• Field of Search: 701/45, 340/436, 280/735
• US Class Current: 701/45
• CPC Class Codes: B60R 2021/01177 Misdeployment, e.g. during assembly, disassembly, accident salvage or recycling
• CPC Class Codes: B60R 2021/01322 comprising variable thresholds, e.g. depending from other collision parameters
• CPC Class Codes: B60R 21/0132 responsive to vehicle motion parameters , e.g. to vehicle longitudinal or transversal deceleration or speed value
• CPC Class Codes: B60R 21/0133 by integrating the amplitude of the input signal

Abstract

A method is provided for triggering a vehicle occupant restraint device, in which a sensor signal generated by a crash sensor is fed to a triggering device and to a clearing device supplying a clearing signal. The sensor signal is integrated in the clearing device and subjected to an examination algorithm. The output signal of at least one additional crash sensor is fed to the clearing device. Then, the two output signals are linked to one another and are subsequently integrated during an observation period. A clearing signal is generated when the integral exceeds a threshold value.

Claims

1. A method of triggering a vehicle occupant restraint device, the method comprising the acts of:

generating a sensor signal by a first crash sensor and feeding the sensor signal to a triggering device via a clearing device that supplies a clearing signal, in which clearing device the sensor signal is integrated and subjected to an examination algorithm;

generating an output signal of at least one additional crash sensor and feeding the output signal to the clearing device;

linking the sensor signal and the output signal to one another and subsequently mathematically integrating the linked sensor and output signals into an mathematically integrated output during an observation period; and

generating the clearing signal when the mathematically integrated output exceeds a defined threshold value.

2. The method according to claim 1, the method further comprising the act of generating the clearing signal when at least one of the sensor signal and the output signal exceeds a defined threshold value.

3. The method according to claim 1, further comprising the act of generating the clearing signal when both the sensor signal and the output signal exceed defined threshold values, respectively.

4. The method according to claim 2, further comprising the act of generating the clearing signal when both the sensor signal and the output signal exceed defined threshold values, respectively.

5. The method according to claim 1, further comprising the act of resetting a value of the integral to a zero value when one of the sensor signal and the output signal does not reach a threshold value during the observation period.

6. The method according to claim 2, further comprising the act of resetting a value of the integral to a zero value when one of the sensor signal and the output signal does not reach a threshold value during the observation period.

7. The method according to claim 3, further comprising the act of resetting a value of the integral to a zero value when one of the sensor signal and the output signal does not reach a threshold value during the observation period.

8. The method according to claim 1, wherein the linked sensor and output signals are simultaneously integrated during the observation period.