Apparatus for detecting a rollover event

• US 20060095182A1
• Filed: 03/12/2003
• Published: 05/04/2006
• Est. Priority Date: 08/03/2002
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Schmid, Michael, Kroeninger, Mario, Lahmann, Robert
• Granted Patent: US 8,768,572 B2
• Time in Patent Office: Days
• US Class Current: 701/45
• CPC Class Codes: B60R 2021/0018 Roll-over
• CPC Class Codes: B60R 2021/0119 Plausibility check
• 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 21/01336 using filtering

Abstract

An apparatus for detecting a rollover event, which includes at least one acceleration sensor in the vertical direction of the vehicle and one acceleration sensor in the horizontal direction of the vehicle. A processor of the apparatus according to the invention will start a rollover algorithm in response to an inertial event, in order, as a function of the signal of the acceleration sensor in the vertical direction to detect the rollover event and as a function of it to trip restraint devices.

Claims

1-9. -9. (canceled)

10. An apparatus for detecting a rollover event, comprising:

at least one first acceleration sensor in a vertical direction of a vehicle;

at least one second acceleration sensor in at least one horizontal direction of the vehicle; and

a processor for detecting an inertial event as a function of a first signal of the at least one second acceleration sensor, and after detection of the inertial event, evaluating a second signal from the at least one first acceleration sensor for detecting the rollover event, the processor triggering a restraint device as a function of the first signal and the second signal.

11. The apparatus as recited in claim 10, wherein:

the processor detects the inertial event one of in the form of the deployment of the restraint device in the event of one of a head-on crash and a lateral crash and as a function of an acceleration signal in one of a longitudinal direction of the vehicle and a transverse direction of the vehicle.

12. The apparatus as recited in claim 10, wherein:

the processor performs the evaluation by examining characteristics, in that an acceleration in the vertical direction of the vehicle in the inertial event is negative and has a positive gradient.

13. The apparatus as recited in claim 12, wherein:

the processor evaluates at least one of an acceleration in the transverse direction of the vehicle and a rotation rate about a vehicle longitudinal rate, in order to detect a lateral motion.

14. The apparatus as recited in claims 12, wherein:

the processor evaluates a vehicle acceleration in the longitudinal direction of the vehicle.

15. The apparatus as recited in claim 12, further comprising:

a low-pass filter for filtering an acceleration in the vertical direction of the vehicle, in order to extract a gravitational acceleration.

16. The apparatus as recited in claim 15, wherein:

the at least one first acceleration sensor includes an offset control which is embodied as slow.

17. The apparatus as recited in claim 10, wherein:

in an absence of a detection of the rollover event, the processor is capable, after the first inertial event, of monitoring for a new inertial event.

18. The apparatus as recited in claim 10, further comprising:

at least one plausibility sensor.