Safety System

• US 20090212543A1
• Filed: 01/25/2006
• Published: 08/27/2009
• Est. Priority Date: 03/23/2005
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Nguyen, Huu-Dat, Heilmann, Gernod
• Granted Patent: US 8,061,733 B2
• Time in Patent Office: Days
• US Class Current: 280/735
• CPC Class Codes: B60R 2021/01068 between different sensors and airbag control unit
• CPC Class Codes: B60R 2021/01184 Fault detection or diagnostic circuits in power circuits B60R2021/01129
• CPC Class Codes: B60R 21/01 Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents electrical circuits for transmission of signals between steering wheel and the vehicle itself B60R16/027; for electrically actuating belt retractor locking means B60R22/343
• CPC Class Codes: B60R 21/0173 Diagnostic or recording means therefor

Abstract

A safety system for vehicle occupants includes a control unit and sensors situated remotely from the control unit and connected via conductors to the control unit. The safety system encompasses means for testing the sensors and the conductors to the sensors.

Claims

1-8. -8. (canceled)

9. A safety system for vehicle occupants, comprising:

a control unit;

sensors situated remotely from the control unit and connected via conductors to the control unit; and

means for testing the sensors and the conductors to the sensors.

10. The safety system according to claim 9, further comprising a current measuring arrangement.

11. The safety system according to claim 9, further comprising at least one reference current source.

12. The safety system according to claim 11, wherein the at least one reference current source includes a plurality of reference current sources.

13. The safety system according to claim 12, further comprising a switching arrangement with which the reference current sources are individually controllable.

14. The safety system according to claim 9, further comprising a controllable output stage for supplying energy to the sensors.

15. The safety system according to claim 9, further comprising a resistor connected in series to the sensors.

16. The safety system according to claim 15, further comprising an amplifying device for amplifying a voltage drop occurring at the resistor.