Rollover detection system

• US 7,333,884 B2
• Filed: 07/01/2005
• Issued: 02/19/2008
• Est. Priority Date: 07/09/2004
• Status: Active Grant

• Current Assignee: Invensense Incorporated (TDK Corporation)
• Original Assignee: Delphi Technologies, Inc. (Aptiv PLC)
• Inventors: Darvish, Abtin, Haun, Jens, Falkner, Markus
• Primary Examiner(s): ARTHUR JEANGLAUDE, GERTRUDE
• Application Number:
  US11/173,763
• Publication Number:
  US 20060009896A1
• Time in Patent Office: 963 Days
• Field of Search: 701/45, 701/46, 701/47, 180/268, 180/271, 280/734, 280/735, 340/438, 340/439
• US Class Current: 701/45
• CPC Class Codes: B60R 2021/01265 Seat belts
• CPC Class Codes: B60R 2021/01325 Vertical acceleration
• CPC Class Codes: B60R 2021/01327 Angular velocity or angular acceleration
• CPC Class Codes: B60R 21/0132 responsive to vehicle motion parameters , e.g. to vehicle longitudinal or transversal deceleration or speed value

Abstract

A rollover detection system for a vehicle comprises at least one sensor for the detection of the angle of rotation of the vehicle and/or at least one angular rate sensor, an electronic control device connected to the sensors as well as at least one safety device which can be activated via the control device in the event of a rollover scenario detected with reference to the sensor data. At least one irreversible safety device and at least one reversible safety device are provided. The control device distinguishes between at least one stage of a lower degree of severity and at least one stage of a higher degree of severity of the rollover scenario in the detection of a respective rollover scenario with reference to the sensor data in order to activate at least one reversible safety device in the case of a lower degree of severity and to activate at least one irreversible safety device in the case of a higher degree of severity.

Claims

1. A rollover detection system for a vehicle comprising at least one sensor for the detection of the angle of rotation of the vehicle and/or at least one angular rate sensor, an electronic control device connected to the sensors as well as at least one safety device which can be activated via the control device in the event of a rollover scenario detected with reference to the sensor data, characterized in that at least one irreversible safety device and at least one reversible safety device are provided;

and in that the control device distinguishes between at least one stage of a lower degree of severity and at least one stage of a higher degree of severity of the rollover scenario in the detection of a respective rollover scenario with reference to the sensor data in order to activate at least one reversible safety device in the case of a lower degree of severity and to activate at least one irreversible safety device in the case of a higher degree of severity.

2. A rollover detection system in accordance with claim 1, characterized in that, on the detection of a respective rollover scenario, the control device distinguishes between more than two stages of a different degree of severity of the rollover scenario.

3. A rollover detection system in accordance with claim 1 or claim 2, characterized in that, on the detection of a respective rollover scenario, the control device distinguishes between two or three stages of a different degree of severity of the rollover scenario.

4. A rollover detection system in accordance with claim 1, characterized in that the control device comprises an adaptive logic system in order to distinguish between the stages of different degrees of severity of a respective rollover scenario.

5. A rollover detection system in accordance with claim 4, characterized in that at least one signal derived from the sensor data can advantageously be changed at least regionally via the adaptive logic system in dependence on specific properties and/or on the development of this signal in order to effect the respective adaptation.

6. A rollover detection system in accordance with claim 5, characterized in that the signal derived from the sensor data is representative of the development of the angular rate in dependence on the angle of rotation.

7. A rollover detection system in accordance with claim 1, characterized in that a respective safety device can be activated when the signal derived from the sensor data exceeds or falls below a pre-determinable threshold value.

8. A rollover detection system in accordance with claim 7, characterized in that a variable threshold value is provided which is dependent on the respective angle of rotation and on the respective angular rate.

9. A rollover detection system in accordance with claim 1, characterized in that an irreversible safety device can only be activated when the threshold value is exceeded or is fallen below by a non-adapted signal derived from the sensor data.

10. A rollover detection system in accordance with claim 1, characterized in that at least one reversible safety device can be activated each time an adapted signal derived from the sensor data exceeds or falls below the threshold value.

11. A rollover detection system in accordance with claim 1, characterized in that a respective adaptation of the signal derived from the sensor data takes place such that a respective stage of a lower degree of severity is detected prior to a respective stage of a higher degree of severity.

12. A rollover detection system in accordance with claim 1, characterized in that a respective adaptation of the signal derived from the corresponding sensor data only takes place when the properties and/or the development of the signal correspond/corresponds to criteria pre-settable via the adaptive logic system.

13. A rollover detection system in accordance with claim 1, characterized in that at least one sensor is provided for the detection of the lateral acceleration of the vehicle and/or at least one sensor is provided for the detection of the vertical acceleration of the vehicle.

14. A rollover detection system in accordance with claim 13, characterized in that an activation signal can be generated by means of the control device in dependence on the lateral acceleration and/or vertical acceleration;

and in that a respective safety device can only be activated when the activation signal is also present.

15. A rollover detection system in accordance with claim 1, characterized in that the control device is formed at least partly by the control apparatus of the vehicle.