Motor vehicle control system

• US 8,396,655 B2
• Filed: 07/17/2008
• Issued: 03/12/2013
• Est. Priority Date: 09/06/2007
• Status: Active Grant

• Current Assignee: ZF CV Systems Europe BV
• Original Assignee: Wabco GmbH (Wabco Holdings Incorporated)
• Inventors: Breuer, Karsten, Dieckmann, Thomas, Kitterer, Hartmut
• Primary Examiner(s): Marc, McDieunel
• Application Number:
  US12/733,491
• Publication Number:
  US 20100256867A1
• Time in Patent Office: 1,699 Days
• Field of Search: 701/1, 701/23, 701/24, 701/32.2, 701/33.4, 701/45, 701/48, 701/117, 701/118, 701/300, 701/301, 701/302, 701/408, 701/469, 701/470, 701/514, 340/435, 340/438, 340/439, 340/901, 340/903, 340/905, 340/933, 340/936, 340/937, 340/945, 340/995.12, 340/995.13, 342/70, 342/71, 342/357.31, 342/451, 342/458, 348/149, 348/169, 382/104, 702/159, 250/201.6, 356/3.03
• US Class Current: 701/408
• CPC Class Codes: G07C 5/0891 Video recorder in combination with video camera
• CPC Class Codes: G08G 1/167 Driving aids for lane monitoring, lane changing, e.g. blind spot detection

Abstract

A control system for a motor vehicle includes: (a) at least one driving data sensor for acquiring driving data characterizing a driving state of the motor vehicle; (b) at least one camera for capturing images of the surroundings; (c) an accident recorder that can record the images of the surroundings in a buffer; and (d) an electronic controller for controlling the driving data sensor, the camera, and the accident recorder. The electronic controller is programmed to trigger an autonomous braking action of the motor vehicle based on driving data and/or images of the surroundings.

Claims

1. A vehicle control system for a motor vehicle, comprising:

driving data sensors configured to detect driving data that represent a driving state of the motor vehicle, the driving data sensors comprising;

a distance sensor configured to detect a distance and a relative speed of the motor vehicle with respect to a preceding vehicle; and

a yaw-rate sensor;

at least one camera configured to detect surrounding-area images;

an accident data recorder for buffered recording of the surrounding-area images; and

an electronic controller configured to;

control the driving data sensors, the at least one camera and the accident data recorder;

determine the detected distance and yaw rate sensor data as the driving data; and

initiate autonomous braking of the motor vehicle when the detected distance, relative speed, yaw rate sensor data, and surrounding-area images indicate a predetermined threshold probability of an accident.

2. The vehicle control system as claimed in claim 1, wherein the at least one camera includes a lane-keeping camera that detects a driving lane marking during operation of the motor vehicle.

3. The vehicle control system as claimed in claim 1, wherein the at least one camera includes a reversing camera that records reversing images, and wherein the accident data recorder is configured to effect buffered recording of the reversing images.

4. The vehicle control system as claimed in claim 1, wherein:

the accident data recorder is configured to effect buffered recording of the detected distance.

5. The vehicle control system as claimed in claim 1, wherein the driving data sensors further comprise an acceleration sensor and a steering-angle sensor, wherein the accident data recorder is configured to effect buffered recording of acceleration sensor data and steering-angle sensor data produced by the acceleration sensor and steering-angle sensor, and wherein the electronic controller is further configured to determine at least one of the acceleration sensor data and steering-angle sensor data as the driving data.

6. The vehicle control system as claimed in claim 1, wherein the accident data recorder is configured to store about 0.1 to 100 images per second.

7. A motor vehicle, comprising a vehicle control system as claimed in claim 1, further comprising at least one of:

(a) a lane-keeping assistance system including

a lane-keeping camera configured to detect a driving lane marking on a roadway during operation of the motor vehicle, and

an electrical assistance system controller configured to output a lane-keeping signal on leaving the driving lane during operation of the motor vehicle;

(b) a distance assistance system including

the distance sensor; and

an electronic distance assistance controller adapted to output a distance warning signal when a predetermined minimum distance from the preceding vehicle is undershot during operation of the motor vehicle; and

(c) an emergency braking system including an emergency braking system controller configured to autonomously brake the motor vehicle, the emergency braking system controller being connected to the lane-keeping camera and to the distance sensor to enable redundant detection of the preceding vehicle.

8. The motor vehicle as claimed in claim 7, wherein the motor vehicle is one of a bus and a truck.

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

detecting driving data using at least one driving data sensor, the driving data including a distance and a relative speed of the motor vehicle with respect to a preceding vehicle, and a yaw rate of the motor vehicle;

detecting surrounding-area images using at least one camera;

effecting buffered recording of the surrounding-area images in an accident data recorder;

determining with at least one processor whether the driving data and surrounding-area images indicate a predetermined threshold probability of an accident; and

initiating autonomous braking of the motor vehicle when the driving data and surrounding-area images indicate a predetermined threshold probability of an accident.

10. The method as claimed in claim 9, further comprising the steps of:

detecting reversing camera images from a reversing camera mounted at the rear of the motor vehicle; and

effecting buffered recording of the reversing camera images using the accident data recorder.