Device for controlling all airbags for a vehicle, a control unit for forming a control signal for all airbags for a vehicle, and a system of the device and the control unit

Patent metadata

Field	Value
Publication number	US-9254806-B2
Application number	US-73713809-A
Country	US
Kind code	B2
Filing date	May 4, 2009
Priority date	Jul 3, 2008
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

A device for controlling all airbags for a vehicle is provided, and also a control unit for forming a control signal for all airbags for a vehicle, as well as a system of this device and this control unit. The device has a trigger circuit control and also an energy reserve, in order to control power switches in a trigger circuit as a function of the control signal that comes from the control unit, and to use the energy from the energy reserve to trigger the trigger elements for the airbags. The control unit receives at least parts of the energy supply from the device.

First claim

What is claimed is:

1. A device for controlling airbags of a vehicle, the device having a single housing, comprising:
at least one energy reserve that receives electric energy from a battery and provides electric energy for an autarchy case,
a trigger circuit control that has a plurality of power switches, the trigger circuit control controlling the power switches as a function of a control signal to trigger the airbags,
a first interface that provides the control signal, and
a supply module, connected between the energy reserve and the trigger circuit control, which provides a boosted battery voltage to charge the energy reserve and a triggering energy for the trigger circuit control to trigger the airbags.

2. The device as recited in claim 1 , wherein the supply module outputs, via a second interface, the at least one supply voltage for a control unit outside of the housing.

3. The device as recited in claim 1 , wherein a third interface is provided, via which an activation signal for the supply module is provided.

4. The device as recited in claim 2 , wherein a third interface is provided, via which an activation signal for the supply module is provided.

5. The device as recited in claim 1 , wherein the device provides a fourth interface that provides a plausibilization signal for the trigger circuit control, the trigger circuit control controlling the power switches as a function of the control signal and the plausibilization signal.

6. The device as recited in claim 2 , wherein the device provides a fourth interface that provides a plausibilization signal for the trigger circuit control, the trigger circuit control controlling the power switches as a function of the control signal and the plausibilization signal.

7. The device as recited in claim 3 , wherein the device provides a fourth interface that provides a plausibilization signal for the trigger circuit control, the trigger circuit control controlling the power switches as a function of the control signal and the plausibilization signal.

8. The device as recited in claim 5 , wherein the fourth interface provides as the plausibilization signal a first partial signal for releasing a first power switch of a respective trigger circuit and a second partial signal for releasing a second power switch of the respective trigger circuit.

9. The device as recited in claim 6 , wherein the fourth interface provides as the plausibilization signal a first partial signal for releasing a first power switch of a respective trigger circuit and a second partial signal for releasing a second power switch of the respective trigger circuit.

10. The device as recited in claim 7 , wherein the fourth interface provides as the plausibilization signal a first partial signal for releasing a first power switch of a respective trigger circuit and a second partial signal for releasing a second power switch of the respective trigger circuit.

11. A control unit for forming a control signal for all airbags for a vehicle, comprising:
an accident sensor system for outputting at least one accident sensor signal,
an evaluation circuit for outputting a control signal as a function of the at least one accident sensor signal,
a fifth interface for outputting the control signal to the device in accordance with claim 1 , and
a sixth interface for providing at least one supply voltage for the control unit, the sixth interface being configured in such a manner that the sixth interface receives the at least one supply voltage from outside of the control unit.

12. The control unit as recited in claim 11 , wherein the evaluation circuit for outputting an activation signal via a seventh interface for a supply module in the device is configured in accordance with claim 1 .

13. The control unit as recited in claim 11 , wherein the control unit has an evaluation module for the redundant evaluation of the at least one accident sensor signal and a monitoring circuit for the evaluation circuit, the evaluation module generating a first partial signal of a plausibilization signal and the monitoring circuit generating a second partial signal for the plausibilization signal, an eighth interface for outputting the plausibilization signal being provided.

14. A system comprising the device as recited in claim 1 , and the control unit as recited in claim 11 .

15. The system as recited in claim 14 , wherein the device and the control unit are connected to each other by a bus connection.

Assignees

• Freienstein Heiko
• Kornhaas Robert
• Bosch Gmbh Robert

Inventors

• Freienstein Heiko
• Kornhaas Robert

Classifications

• B60R21/0136

  responsive to actual contact with an obstacle {, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle (monitoring crash strength in combination with passenger seat detection B60R21/01558)} · CPC title

• B60R21/0132

  responsive to vehicle motion parameters {, e.g. to vehicle longitudinal or transversal deceleration or speed value} · CPC title

• B60R2021/01327

  Angular velocity or angular acceleration · CPC title

• B60R21/017 Primary

  including arrangements for providing electric power to safety arrangements {or their actuating means, e.g. to pyrotechnic fuses or electro-mechanic valves} · CPC title

• B60R2021/01061

  between the airbag system and other vehicle electronic systems · CPC title