Method and system for assisting the driver of a motor vehicle in identifying road bumps

• US 20080015743A1
• Filed: 06/28/2007
• Published: 01/17/2008
• Est. Priority Date: 06/30/2006
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Haug, Karsten
• Application Number:
  US11/824,098
• Publication Number:
  US 20080015743A1
• Time in Patent Office: Days
• US Class Current: 701/1
• 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: B60W 30/16 Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• CPC Class Codes: B60W 30/17 with provision for special action when the preceding vehicle comes to a halt, e.g. stop and go
• CPC Class Codes: G01S 7/41 using analysis of echo signal for target characterisation; Target signature; Target cross-section
• CPC Class Codes: G08G 1/0967 Systems involving transmission of highway information, e.g. weather, speed limits transmission of navigation instructions to the vehicle G08G1/0968
• CPC Class Codes: G08G 1/165 for passive traffic, e.g. including static obstacles, trees

Abstract

A system and method for assisting the driver of a vehicle in identifying obstacles for the vehicle as is described. Objects located outside the vehicle are detected with the aid of object detector. If objects are detected, information is given to the driver and/or to defined components of the vehicle. An evaluation unit ascertains whether a detected object is a road bump, and information is given to the driver and/or to components of the vehicle only if a detected object is a road bump.

Claims

1. A method for assisting a driver of a vehicle in identifying an obstacle for the vehicle, the method comprising:

detecting objects located outside the vehicle using an object detector;

ascertaining whether a detected object is a road bump; and

outputting information to at least one of the driver and a defined component of the vehicle only if the detected object is a road bump.

2. The method as recited in claim 1, wherein the output of information to the at least one of the driver and the component of the vehicle if a road bump has been detected is suppressed if an instantaneous speed of the vehicle at least one of is lower than a predefined maximum speed, and the vehicle is braked by the driver.

3. The method as recited in claim 1, further comprising:

automatically reducing a speed of the vehicle if a road bump has been detected.

4. The method as recited in claim 3, wherein the speed of the vehicle is automatically reduced by braking to a predefined maximum speed.

5. The method as recited in claim 4, wherein a height of a detected road bump is ascertained, and the maximum speed is a function of the height of the detected road bump.

6. The method as recited in claim 1, wherein, if a road bump has been detected, at least one of an active chassis of the vehicle is automatically adjusted, a ground clearance of the vehicle is increased, and a suspension is set to be softer.

7. The method as recited in claim 4, wherein a drive of the vehicle is controlled in such a way that after passing a detected road bump, and after input of a signal by the driver, the vehicle is accelerated again, the operating parameters which existed before the detection of the road bump being reset.

8. The method as recited in claim 6, wherein the active chassis is controlled in such a way that after passing a detected road bump, and after input of a signal by the driver, the active chassis is set again to a road bump-free stretch.

9. The method as recited in claim 1, wherein, if a road bump has been detected, at least one of a visual acoustic, and haptic warning signal is generated for the driver.

10. The method as recited in claim 1, wherein, if a road bump has been detected, an automatic braking jolt is generated.

11. The method as recited in claim 1, wherein, when a road bump is detected, a picture or a symbol of a road bump is inserted into a video display system of the vehicle, the picture or symbol being highlighted by a marking.

12. The method as recited in claim 1, wherein a height of a detected road bump is ascertained, the ascertained height is compared to a comparison value, and the information output to the at least one of the driver and the component of the vehicle is a function of a result of the comparison.

13. The method as recited in claim 1, wherein, after passing over a detected road bump, a road contact of the vehicle is monitored, and if road contact on at least one axle of the vehicle is lost, a braking command that was issued by the driver is ignored until the ground contact on the at least one axle is restored.

14. The method as recited in claim 1, wherein the object is detected using at least one of video sensors, radar sensors, lidar sensors, laser sensors, and ultrasonic sensors.

15. The method as recited in claim 1, wherein digital information regarding positions of known road bumps is provided, and an instantaneous position of the vehicle is determined using a position finding device, the digital information, in combination with the instantaneous vehicle position, being supplied to an evaluation unit.

16. A driver assistance system, comprising:

an object detector adapted to detect objects located outside a vehicle;

an evaluation unit adapted to evaluate detected objects for a presence of defined features; and

a control unit adapted to generate information capable of being output to at least one of a driver and a defined component of the vehicle;

wherein the evaluation unit is adapted to evaluate detected objects for agreement with road bumps, and the information for at least one of the driver and the component of the vehicle is generated as a function of a positive result of the evaluation.