Electronic Motor Vehicle Control Unit

• US 20080312790A1
• Filed: 03/08/2006
• Published: 12/18/2008
• Est. Priority Date: 03/10/2005
• Status: Abandoned Application

• Current Assignee: Continental Teves AG & Co. OHG (Continental AG)
• Original Assignee: Continental Teves AG & Co. OHG (Continental AG)
• Inventors: Fey, Wolfgang, Sommer, Stefan, Zydek, Michael
• Application Number:
  US11/885,996
• Publication Number:
  US 20080312790A1
• Time in Patent Office: Days
• US Class Current: 701/38
• CPC Class Codes: B60R 2021/01184 Fault detection or diagnostic circuits in power circuits B60R2021/01129
• 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: B60T 8/3675 integrated in modulator units
• CPC Class Codes: B60T 8/885 using electrical circuitry
• CPC Class Codes: B60W 10/18 including control of braking systems
• CPC Class Codes: B60W 50/023 Avoiding failures by using redundant parts

Abstract

Control unit for motor vehicle brakes composed of conventional function groups with an electronic brake controller and a hydraulic unit that is in particular rigidly connected to the controller, with the electronic controller comprising a redundant or partly redundant microprocessor system with several central processing units (CPU), and with the conventional function groups including a control philosophy at least for anti-lock control. Furthermore, the control unit comprises non-conventional hardware and software function groups of an otherwise external motor vehicle passenger protection safety system, which in particular does not intervene directly into driving dynamics, hence, is passive. These groups are integrated into the ambience of the control unit for motor vehicle brakes, and ambience implies that the non-conventional hardware and software function groups to be integrated are arranged at least in the immediate vicinity of the conventional electronic brake controller.

Claims

1-11. -11. (canceled)

12. A control unit for motor vehicle brakes comprising:

an electronic brake controller; and

a hydraulic unit that is connected to the controller, wherein the electronic controller comprises a redundant or partly redundant microprocessor system (20) with several central processing units (21), and with conventional function groups including software components with a control philosophy as well as hardware components at least for an anti-lock control (ABS) and hardware components, and the non-conventional function groups of an external passive motor vehicle passenger protection safety system are provided and these are integrated into the ambience of the control unit for motor vehicle brakes, and ambience implies that the non-conventional function groups to be integrated are arranged at least in an immediate vicinity of the electronic brake controller.

13. The controller of claim 12, wherein the hardware of the microprocessor system disconnects completely in the case of an error or continues operating in the case of an error in the sense of an emergency operation.

14. The controller of claim 12, wherein the microprocessor system operates according to the principle of symmetrical redundancy or asymmetrical redundancy, and in the non-conventional function groups of the motor vehicle passenger protection safety system are not impaired by a disabling error.

15. The controller of claim 12, wherein the microprocessor system comprises a microcontroller, which comprises at least the following function groups:

redundantly designed microprocessor system, one or more mixed analog/digital circuits for the activation of efficient actuators for the mechanical restraint systems, redundant cutoff circuits for the actuator activation, and self-supporting energy supply unit; and

basic elements of an ABS control unit being defined, at least by the following assemblies;

device for processing input signals of several wheel rotational speed sensors, driver outlets for magnet coils or, more particularly, also coils for magnetic hydraulic valves, especially one or more pressure sensor inlets, and drivers to actuate alarm lamps.

16. The controller of claim 12, wherein the microprocessor system comprises the non-conventional function groups:

at least one air bag acceleration sensor or an air bag acceleration sensor network, and at least one monitoring circuit for an acceleration sensor.

17. The controller of claim 12, wherein the microprocessor system comprises at least one safety actuator driver.

18. The controller of claim 12, wherein the microprocessor system comprises a microcontroller, in which some or all existing non-conventional hardware function groups are integrated in a mixed analog/digital circuit.

19. The controller of claim 12, wherein an integration of the function groups takes place on the printed circuit board, more particularly in a chip or a set of chips made up of several chips.

20. The controller of claim 12, wherein the microprocessor system comprises at least one inlet for a yaw rate sensor module (e.g. ‘

sensor cluster’

) and/or at least one integrated yaw rate sensor.

21. The controller of claim 12, wherein the microprocessor system comprises one or more watchdog circuits monitoring the function of the microprocessor system(s).

22. The controller of claim 12, wherein the joint microprocessor system comprises one joint analog/digital converter, which has a redundant design in particular, and which processes inlet signals for the brake control as well as inlet signals for the safety system.