Method and system for avoiding a vehicle collision

Patent metadata

Field	Value
Publication number	US-9944259-B2
Application number	US-201414778374-A
Country	US
Kind code	B2
Filing date	Jan 29, 2014
Priority date	Mar 20, 2013
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A vehicle includes a sensor device monitoring at least one collision region that is located in the surroundings of the vehicle for sensing at least one object that enters and/or is present in a possible collision region during motion of the vehicle; an electromechanical brake booster and braking force-regulating components coupled thereto, which are operationally integrated into a vehicle braking system for decelerating the vehicle; and a control device that receives signals from the sensor device and, on the basis of those signals, controls the brake booster and the braking force-regulating components and/or further active chassis components. A method for avoiding a collision between the vehicle and the at least one object includes, upon sensing the at least one object, modifying a driving speed and/or driving direction of the vehicle, with the aid of the control device in combination with the braking system and the braking force-regulating components.

First claim

What is claimed is:

1. A method for avoiding a collision between a moving vehicle and an object in a possible collision region during motion of the vehicle, wherein the vehicle includes (a) a sensor device for monitoring at least one collision region that is located in the surroundings of the vehicle in order to sense the object, (b) a vehicle braking system for decelerating the vehicle, the braking system including an electromechanical brake booster situated between a brake actuation element and a brake master cylinder, and the braking system including braking force-regulating components coupled to the electromechanical brake booster via a hydraulic fluid, and (c) a control device that is configured to receive signals from the sensor device and, on the basis of the signals, control the electromechanical brake booster and the braking force-regulating components, the method comprising:
responsive to the signals from the sensor device indicating that the object has been sensed in the at least one collision region, controlling, by the control device, the electromechanical brake booster and the braking force-regulating components to modify a driving direction of the vehicle, wherein the control device activates the electromechanical brake booster to achieve a build up pressure in a hydraulic fluid pressure buildup in the braking system in response to signals from the sensor device upon sensing the object, wherein the control device controls the braking force-regulating components to apply the build up pressure asymmetrically to wheels of the moving vehicle in order to steer the moving vehicle around the sensed object via the asymmetric operation of the braking system, and wherein the build up pressure is achieved through the electromechanical brake booster without control applied to a pump of the braking system.

2. The method of claim 1 , further comprising the sensor device monitoring one or more three-dimensional collision regions that, individually or together, cover the entire surroundings of the vehicle, and generating the signals using at least one of radar, ultrasound, and image acquisition.

3. The method of claim 1 , further comprising, responsive to the controlling, the braking force-regulating components respectively generating a braking torque at wheel brake cylinders coupled to vehicle wheels, the respective braking torque at the vehicle wheels being controlled independently by the control device in response to the signals.

4. The method of claim 1 , wherein the braking force-regulating components include at least one of an electronic stability control (ESP) device and an anti-lock braking system (ABS) device.

5. The method of claim 1 , wherein the further active vehicle components include at least one of a vehicle steering device, a differential transmission device, an active chassis device, and a drive train device.

6. The method of claim 1 , wherein a driver is able to perform a braking control and an acceleration control during the controlling performed by the control device.

7. The method of claim 6 , wherein the controlling assists the driver to perform at least one of the braking and the acceleration.

8. A collision avoidance system for a vehicle, comprising:
a sensor device configured to monitor at least one possible collision region, located in surroundings of the vehicle, for sensing an object in the possible collision region during motion of the vehicle;
a vehicle braking system for decelerating the vehicle and that includes an electromechanical brake booster situated between a brake actuation element and a brake master cylinder and that includes braking force-regulating components coupled to the electromechanical brake booster via a hydraulic fluid; and
a control device configured to receive signals from the sensor device and, responsive to the received signals indicating that the object has been sensed in the at least one possible collision region, control the braking force-regulating components to modify a driving direction of the vehicle, in such a way that a collision of the vehicle with the object is avoided, wherein the control device activates the electromechanical brake booster to achieve a build up pressure in a hydraulic fluid pressure buildup in the braking system in response to signals from the sensor device upon sensing the object, wherein the control device controls the braking force-regulating components to apply the build up pressure asymmetrically to wheels of the moving vehicle in order to steer the moving vehicle around the sensed object via the asymmetric operation of the braking system, and wherein the build up pressure is achieved through the electromechanical brake booster without control applied to a pump of the braking system.

9. The system of claim 8 , wherein the sensor device is configured to monitor one or more three-dimensional collision regions that, individually or together, cover the entire surroundings of the vehicle, and is configured to generate the signals using at least one of radar, ultrasound, and image acquisition.

10. The system of claim 8 , wherein the control device is configured to respond to the signals by controlling the braking force-regulating components respectively for generating a braking torque at wheel brake cylinders coupled to vehicle wheels, the controlling of the respective braking torques at the vehicle wheels being performed independently by the control device in response to the signals.

11. The system of claim 8 , wherein the braking force-regulating components include at least one of an electronic stability control (ESP) device and an anti-lock braking system (ABS) device.

12. The system of claim 8 , wherein control device is configured to respond to the signals by further controlling at least one of a vehicle steering device, a differential transmission device, an active chassis device, and a drive train device.

13. The system of claim 8 , wherein a driver is able to perform a braking control and an acceleration control during the controlling performed by the control device.

14. The system of claim 13 , wherein the controlling assists the driver to perform at least one of the braking and the acceleration.

15. The method of claim 1 , wherein the braking force-regulating components apply the build up pressure asymmetrically to the wheels of the moving vehicle by applying a first total braking torque to the wheels on a first side of the vehicle and applying a second total braking torque that is lower than the first total braking torque on the wheels on a second side of the vehicle.

16. The system of claim 8 , wherein the braking force-regulating components apply the build up pressure asymmetrically to the wheels of the moving vehicle by applying a first total braking torque to the wheels on a first side of the vehicle and applying a second total braking torque that is lower than the first total braking torque on the wheels on a second side of the vehicle.

Assignees

• Bosch Gmbh Robert

Inventors

• Bunk Michael

Classifications

• B60T8/17558

  specially adapted for collision avoidance or collision mitigation (road vehicle drive control systems for collision avoidance otherwise than by controlling a particular sub-unit B60W30/09) · CPC title

• B60G2800/222

  during collision · CPC title

• B60G17/0195

  characterised by the regulation being combined with other vehicle control systems {(conjoint control of vehicle sub-units including control of suspension systems B60W10/22)} · CPC title

• B60T7/042

  by electrical means, e.g. using travel or force sensors · CPC title

• B60T13/146

  Part of the system directly actuated by booster pressure · CPC title