METHOD AND SYSTEM FOR ASSISTED EMERGENCY BRAKING

Abstract

A method for the assisted emergency braking of a vehicle, in which the lateral and/or the longitudinal guidance of the vehicle are/is influenced in such a way that the vehicle is guided in the direction of a safety zone, and when the safety zone has been reached, a parking position, in particular within the safety zone, is ascertained for the vehicle, the vehicle being guided in such a way that the vehicle comes to a standstill in the parking position.

Claims

1. A method for assisted emergency braking of a vehicle, the method comprising: influencing at least one of a lateral and longitudinal guidance of the vehicle in such a way that the vehicle is guided in a direction of a safety zone; and when the safety zone is reached, ascertaining a parking position within the safety zone for the vehicle, the vehicle being guided in such a way that the vehicle comes to a standstill in the parking position.

2. The method as recited in claim 1, wherein the lateral guidance is influenced only starting at a predefined speed.

3. The method as recited in claim 1, wherein the lateral guidance is influenced only starting at a predefined distance to an expected standstill of the vehicle.

4. The method as recited in claim 1, wherein the parking position of the vehicle is corrected once the ascertained parking position has been reached in such a way that an evacuation space is created around the vehicle.

5. The method as recited in claim 1, wherein the parking position is ascertained as a function of signals from at least one of a chassis sensor system, a parking sensor system, an inertial sensor system, an acceleration sensor system, a wheel speed sensor system, and a tilt sensor system of the vehicle.

6. The method as recited in claim 1, wherein the safety zone lies at least partially outside a road on which the vehicle was traveling.

7. The method as recited in claim 6, a maximum driving distance outside the road being predefined.

8. The method as recited in claim 6, wherein the vehicle is guided outside the roadway at below a predefined speed.

9. The method as recited in claim 1, wherein the vehicle is guided at below a predefined speed starting at a predefined distance to the safety zone.

10. The method as recited in claim 1, wherein the longitudinal guidance is influenced as a function of a predefined deceleration behavior.

11. The method as recited in claim 1, further comprising: activating warning systems of the vehicle being activated during the assisted emergency braking.

12. A non-transitory machine-readable storage medium on which is stored a computer program for assisted emergency braking of a vehicle, the computer program, when executed by a processor, causing the processor to perform: influencing at least one of a lateral and longitudinal guidance of the vehicle in such a way that the vehicle is guided in a direction of a safety zone; and when the safety zone is reached, ascertaining a parking position within the safety zone for the vehicle, the vehicle being guided in such a way that the vehicle comes to a standstill in the parking position.

13. A system for the assisted emergency braking of a vehicle, the system designed to: influence at least one of a lateral and longitudinal guidance of the vehicle in such a way that the vehicle is guided in a direction of a safety zone; and when the safety zone is reached, ascertain a parking position within the safety zone for the vehicle, the vehicle being guided in such a way that the vehicle comes to a standstill in the parking position.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0053] FIGS. 1a-c show situation illustrations of the steps of one specific embodiment of the present method.

[0054] FIG. 2 shows a flow diagram of one specific embodiment of the method of the present invention.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0055] FIG. 1a shows a driving situation in which a vehicle FZG, which is equipped with a system according to the present invention, is undergoing assisted emergency braking according to method 200 of the present invention. The illustration shows the instant of triggering. When the situation that leads to triggering of the emergency braking function has occurred and is detected, the longitudinal guidance of vehicle FZG, among other things, is influenced to the effect that vehicle FZG is decelerated. This can be recognized by the illuminated brake lights 12. At the same time, the other road users are informed in conformance with expectations in that the turn signal light, i.e., blinker 11, is activated to indicate that vehicle FZG will move in the direction of a safety zone S. Also possible would be the activation of hazard lights such as a flashing blue light. In the illustrated situation, safety zone S is situated at the right road edge. Not able to be shown but also possible is that vehicle FZG operates additional signaling devices, for instance a horn or a siren, or transmits vehicle-to-vehicle or vehicle-to-infrastructure messages (C2X messages) via suitable communications means.

[0056] FIG. 1b shows a subsequent driving situation. Here, vehicle FZG was already decelerated and vehicle FZG has reached safety zone S. The vehicle now utilizes the available sensor functionality for ascertaining a safe parking position P. Not able to be shown in the figure but conceivable nevertheless, is that the ascertainment of the safe parking position takes place at a low level of speed. In addition, as shown, emergency flasher system 13 of the vehicle may be activated for the further warning of the other road users.

[0057] FIG. 1c shows an end situation of one specific embodiment, which is detected by the method of the present invention. Vehicle FZG has come to a standstill in a suitable parking position P. This parking position P is partially located outside the road. It is also possible that parking position P is situated completely outside of the road, i.e., completely adjacent to the road. Parking position P is ascertained via the (still) available vehicle sensors. Parameters such as the maximum unevenness of the parking area, the inclination of the parking area and also the remaining evacuation space around vehicle FZG, inter alia, play a role in the detection of a suitable parking position P. All of these parameters are able to be ascertained via the sensor systems of vehicle FZG. One aspect of the present invention relates to the utilization of information from as many sensor systems of vehicle FZG as possible in order to determine a suitable parking position P. In this particular example, it is detected with the aid of the acceleration sensors that the two right wheels of vehicle FZG have left the road. In addition, it is determined with the aid of the tilt sensor installed in vehicle FZG that vehicle FZG exhibits a slight inclination of vehicle FZG on account of a slight gradient of the grass strip next to the road. Since it is determined with the aid of the sensors that the area immediately abutting the road can be used for driving, at least at a low speed, vehicle FZG will not be parked on the road but partially parked on the grass strip. This reduces the risk of a possible accident with other road users traveling on the road.

[0058] According to one specific embodiment that is not shown, it is conceivable that once the initially ascertained parking position P has been reached, the parking position of vehicle FZG is corrected to allow sufficient evacuation space to remain around vehicle FZG. In this context it is also possible that the parking location of vehicle FZG is corrected again in the direction of the road that was left.

[0059] FIG. 2 shows a flow chart of one specific embodiment of method 200 of the present invention.

[0060] In method step 201, the linear or lateral guidance of the vehicle is influenced in such a way that the vehicle is guided in the direction of a safety zone.

[0061] In method step 202, when the vehicle has reached the safety zone, a parking position is ascertained for the vehicle. To ascertain the parking position, as much information as possible is combined via the (still) available sensor systems of the vehicle in order to ascertain a suitable parking position for the vehicle, so that the endangerment of the passengers of the vehicle and of the other road users is kept to a minimum.

[0062] In method step 203, the vehicle is finally guided in such a way that the vehicle comes to a standstill in the parking position.