Driver assistance system for a motor vehicle

• US 8,655,564 B2
• Filed: 07/17/2008
• Issued: 02/18/2014
• Est. Priority Date: 10/20/2007
• Status: Active Grant

• Current Assignee: ZF CV Systems Europe BV (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: Wabco GmbH (Wabco Holdings Incorporated)
• Inventors: Breuer, Karsten, Kamping, Ruppert, Kitterer, Hartmut
• Primary Examiner(s): Badii, Behrang
• Assistant Examiner(s): SMITH-STEWART, DEMETRA R
• Application Number:
  US12/734,064
• Publication Number:
  US 20100318256A1
• Time in Patent Office: 2,042 Days
• Field of Search: None
• US Class Current: 701/70
• CPC Class Codes: B60T 2201/02 Active or adaptive cruise control system; Distance control
• CPC Class Codes: B60T 2201/022 Collision avoidance systems
• CPC Class Codes: B60T 2201/024 Collision mitigation systems
• CPC Class Codes: B60T 2201/03 Brake assistants
• CPC Class Codes: B60T 7/22 initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle , or by means of contactless obstacle detectors mounted on the vehicle
• CPC Class Codes: B60T 8/3275 Systems with a braking assistant function, i.e. automatic full braking initiation in dependence of brake pedal velocity

Abstract

A driver assistance system for a motor vehicle includes at least one driving data sensor for sensing driving data that characterize the driving condition of the motor vehicle, and an electrical controller configured to initiate autonomous emergency braking of the motor vehicle when predetermined driving data has been sensed. A device is provided that is configured to detect a vehicle located in front of the motor vehicle in the direction of travel of the motor vehicle. The electrical controller maintains a brake of the motor vehicle in braking position or brings the brake into the braking position following an emergency braking action when a preceding vehicle is detected.

Claims

1. A driver assistance system for a motor vehicle, comprising:

at least one driving data sensor for sensing driving data indicative of the driving state of the motor vehicle;

an electrical controller configured to initiate an autonomous emergency braking operation of the motor vehicle when predetermined driving data for triggering braking are present; and

a preceding vehicle detection device configured to detect a preceding vehicle located in front of the motor vehicle in a direction of travel of the motor vehicle;

wherein the electrical controller is further configured to at least one of hold a brake of the motor vehicle in a braking position and move the brake of the motor vehicle into the braking position when the motor vehicle is substantially at a standstill after the emergency braking operation and when the preceding vehicle detection device detects the preceding vehicle.

2. The driver assistance system as claimed in claim 1, wherein the electrical controller is configured to move the brake into a release position after the emergency braking operation when the preceding vehicle detection device does not detect a preceding vehicle.

3. The driver assistance system as claimed in claim 1, further comprising a deactivation device for manually deactivating the driver assistance system.

4. A motor vehicle, comprising the driver assistance system as claimed in claim 1.

5. A driver assistance system for a motor vehicle, comprising:

at least one driving data sensor for sensing driving data indicative of the driving state of the motor vehicle;

an electrical controller configured to initiate an autonomous emergency braking operation of the motor vehicle when predetermined driving data for triggering braking are present; and

a preceding vehicle detection device configured to detect a preceding vehicle located in front of the motor vehicle in a direction of travel of the motor vehicle;

wherein the electrical controller is configured to at least one of hold a brake of the motor vehicle in a braking position and move the brake of the motor vehicle into the braking position after the emergency braking operation when the preceding vehicle detection device detects the preceding vehicle, and wherein the electrical controller is configured to move the brake into the braking position when the motor vehicle begins to move after a stationary state resulting from the emergency braking operation.

6. A driver assistance system for a motor vehicle, comprising:

at least one driving data sensor for sensing driving data indicative of the driving state of the motor vehicle;

an electrical controller configured to initiate an autonomous emergency braking operation of the motor vehicle when predetermined driving data for triggering braking are present; and

a preceding vehicle detection device configured to detect a preceding vehicle located in front of the motor vehicle in a direction of travel of the motor vehicle;

wherein the electrical controller is configured to at least one of hold a service brake of the motor vehicle in a braking position and move the service brake of the motor vehicle into the braking position after the emergency braking operation when the preceding vehicle detection device detects the preceding vehicle, and wherein the electrical controller is configured to;

trigger the autonomous emergency braking operation of the motor vehicle by transmitting a corresponding emergency braking signal to the service brake of the motor vehicle; and

move a parking brake of the motor vehicle into the braking position after the emergency braking operation.

7. A method for operating a motor vehicle, comprising the steps of:

sensing whether an emergency braking operation has been carried out;

when the motor vehicle is substantially at a standstill after an emergency braking operation has been carried out, sensing whether a preceding vehicle is located in front of the motor vehicle in a direction of travel of the motor vehicle;

sensing whether the motor vehicle is stationary; and

one of moving a brake of the motor vehicle into a braking position and holding the brake in the braking position.

8. The method as claimed claim 7, further comprising the step of moving a parking brake of the motor vehicle into the braking position.

9. The method as claimed in claim 8, further comprising the steps of determining whether a deactivation device has been activated, and when the deactivation device has been activated, releasing the parking brake.