Integrated vehicle system

• US 20070067082A1
• Filed: 09/20/2005
• Published: 03/22/2007
• Est. Priority Date: 09/20/2005
• Status: Abandoned Application

• Current Assignee: Robert Bosch Corporation (Robert Bosch GmbH), Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Watts, Russell
• Application Number:
  US11/230,998
• Publication Number:
  US 20070067082A1
• Time in Patent Office: Days
• US Class Current: 701/45
• CPC Class Codes: B60R 2021/01054 Bus
• CPC Class Codes: B60R 2021/01129 Problems or faults
• CPC Class Codes: B60R 21/013 including means for detecting collisions, impending collisions or roll-over
• CPC Class Codes: B60R 21/01516 using force or pressure sensing means

Abstract

An electronic control unit for a vehicle configured to control a first and at least a second vehicle function. The electronic control unit includes a first microcontroller that is configured to control the first vehicle function. The electronic control unit also includes at least a second microcontroller that is configured to control the at least second vehicle function. A communication system located within the electronic control unit transfers information between the first microcontroller and the at least second microcontroller.

Claims

1. An electronic control unit for a vehicle, the electronic control unit comprising:

a first microcontroller located within the electronic control unit and configured to control a first vehicle function and be in communication with a first set of vehicle sensors;

a second microcontroller located within the electronic control unit and configured to control a second vehicle function and be in communication with a second set of vehicle sensors;

a communication system located within the electronic control unit and configured to transfer information between the first microcontroller and the second microcontroller; and

a shared operating system located within the electronic control unit and configured to control hardware and software components used by both the first microcontroller and the second microcontroller.

2. The electronic control unit of claim 1, wherein the first function includes determining an occupant force and the second function includes controlling an air bag deployment.

3. The electronic control unit of claim 1, further comprising at least one memory module configured to store data for both the first function and the second function.

4. The electronic control unit of claim 1, further comprising a first fault detection system and a second fault detection system, wherein the first fault detection system is a function of the first microcontroller and the second fault detection system is a function of the second microcontroller, and the first and second fault detection systems are in communication with each other.

5. The electronic control unit of claim 4, wherein the first and second fault detection systems each include at least one watch dog timer.

6. The electronic control unit of claim 1, further configured to include an external communication interface wherein the external communication interface is configured to communicate with both the first and second sets of sensors and both the first and second microcontrollers.

7. The electronic control unit of claim 1, further comprising a power conditioning system configured to supply power to both the first and the second microcontrollers.

8. The electronic control unit of claim 1, wherein the first and second microcontrollers share a degree of coupling based on a measure of vehicle function interaction with respect to time, space, sharing of data, or a combination of the same.

9. A method of controlling vehicle systems comprising:

determining a degree of coupling between a plurality of vehicle systems, wherein the degree of coupling is determined by evaluating a measure of vehicle function interaction with respect to time, space, sharing of data, or a combination of the same;

integrating at least two microcontrollers into a single electronic control unit, wherein the at least two microcontrollers are configured to control at least two of a plurality of vehicle systems; and

configuring the at least two microcontrollers to exchange information with each other.

10. The method according to claim 9, wherein integrating the at least two microcontrollers includes integrating an occupant classification microcontroller and an air bag deployment microcontroller.

11. The method according to claim 9, further comprising integrating a memory module into the electronic control unit that is accessed by the at least two microcontrollers.

12. The method according to claim 9, further comprising detecting a fault with a fault detection system, wherein the fault detection system includes a watch dog timer.

13. The method according to claim 12, wherein detecting a fault includes communicating between the at least two microcontrollers.

14. The method according to claim 9, further comprising supplying power to the at least two microcontrollers with a power conditioning system.

15. A vehicle having a vehicle control system, the vehicle control system comprising:

an electronic control unit configured to include an occupant force sensing system and an air bag deployment system;

a plurality of force sensors configured to measure a weight and a position of an occupant of the vehicle;

an occupant classification microcontroller located within one of the plurality of occupant force sensors and configured to control the occupant force sensing system; and

an air bag deployment microcontroller located within the electronic control unit and configured to control the air bag deployment system and communicate with the occupant classification microcontroller.

16. The vehicle control system of claim 15, further comprising at least one memory module configured to store data for both the occupant classification microcontroller and the air bag deployment microcontroller.

17. The vehicle control system of claim 15, further comprising a first fault detection system and a second fault detection system, wherein the first fault detection system is a function of the occupant classification microcontroller and the second fault detection system is a function of the air bag deployment microcontroller, and the first and second fault detection systems are in communication with each other.

18. The vehicle control system of claim 17, wherein each of the first and second fault detection systems include a watch dog timer.

19. The vehicle control system of claim 15, further comprising a power conditioning system configured to supply power to both the occupant classification microcontroller and the air bag deployment microcontroller.

20. An electronic control unit for a vehicle configured to control a first and at least a second vehicle function, the electronic control unit comprising:

a first microcontroller configured to control the first vehicle function and be in communication with a first set of vehicle sensors;

at least a second microcontroller configured to control the at least second vehicle function and be in communication with at least a second set of vehicle sensors;

a communication system located within the electronic control unit and configured to transfer information between the first microcontroller and the at least second microcontroller; and

a power supply configured to supply power to both the first microcontroller and the at least second microcontroller.

21. The electronic control unit of claim 20, wherein the communication system is comprised of a substrate that includes a plurality of electrically conductive traces.

22. The electronic control unit of claim 20, wherein the first microcontroller is located within one of the first set of vehicle sensors.

23. The electronic control unit of claim 20, wherein the first function is determining an occupant force and the second function is controlling an air bag deployment.

24. The electronic control unit of claim 20, further comprising at least one memory module configured to store data for the first microcontroller and the second microcontroller.

25. The electronic control unit of claim 20, further comprising a first fault and at least a second fault detection system, wherein the first fault detection system is a function of the first microcontroller and the at least second fault detection system is a function of the at least second controller, and the first and second fault detection systems are in communication with each other.

26. The electronic control unit of claim 25, wherein each of the first and second fault detection systems include a watch dog timer.

27. The electronic control unit of claim 20, wherein the first and the at least second microcontroller share a degree of coupling based on a measure of vehicle function interaction with respect to time, space, sharing of data, or a combination of the same.