DE102017203624A1 - Warning device against oncoming traffic. - Google Patents

Abstract

A method of warning against oncoming traffic in a vehicle having an environment detection system that monitors the oncoming lane and issues a warning message or performs braking when an obstacle or a pothole in the oncoming lane and an oncoming vehicle are detected.

Description

The invention relates to a method for monitoring an oncoming lane, which warns of a possible collision when avoiding an oncoming vehicle, furthermore, the invention relates to a longitudinal guide system.

State of the art

From the DE 10 2010 045 162 A1 For example, a vehicle having an environmental sensor is known that detects potholes and automatically guides the vehicle on an evasion trajectory.

Furthermore, it is off DE 10 2010 006 214 A1 an emergency brake assist is known, which automatically decelerates the vehicle in a detected possible collision.

Task and solution

The object of the present invention is to prevent collisions with oncoming vehicles.

The problem is solved by a method according to the independent claim and a longitudinal guide system according to the independent claim. Further advantageous embodiments of the invention are the subject of the dependent claims.

The oncoming vehicle warning system of the present invention in a vehicle having an on-vehicle detection system monitors an oncoming lane and issues a warning or braking when an obstacle or a pothole in the oncoming lane and an oncoming vehicle are detected.

Advantageously, the potential behavior of oncoming traffic can thereby be taken into account. Obstacles can be, for example, accidents, potholes or breakdown vehicles. The surroundings detection system may be, for example, a camera, radar or lidar system.

Preferably, in addition to the output of the warning message additionally a braking of the vehicle can be initiated.

Advantageously, in addition, a braking of the vehicle takes place and any consequences of an accident can be reduced.

Further preferably, a warning may be issued to the oncoming vehicle. In this way, the driver of the oncoming vehicle is advantageously informed of the danger of a potential evasive maneuver on the lane of his own vehicle.

In a further embodiment of the invention, a collision probability can be determined with the oncoming vehicle and at least the warning message or at least the braking can be output or initiated based on the collision probability.

Advantageously, the danger of the situation can be considered accordingly by the probability of collision. Depending on the danger, it is thus possible to either warn, dodge or brake. So an optimal strategy for minimizing the danger is chosen.

Preferably, a lane change request of the oncoming vehicle can also be detected and at least the warning message or at least the braking can be output or initiated based on the detected lane change request.

Advantageously, it can thereby be taken into account that the driver of the oncoming vehicle has recognized the danger and does not want to change to the lane of the vehicle. In this particular case, it may be unnecessary to warn or brake the driver.

Likewise, the measures warning and braking can be done gradually in succession depending on a degree of realization of the lane change. For example, a direction indicator (turn signal) only leads to a warning, while changing the direction of travel already leads to a braking of the own vehicle.

Preferably, an evasion trajectory can be determined and displayed to the driver or the vehicle can be automatically guided on this.

Advantageously, by avoiding the vehicle, the danger can be reduced in a particularly simple manner.

More preferably, a braking of the oncoming vehicle can be initiated. Advantageously, this can reduce the danger emanating from the oncoming vehicle.

In a further embodiment of the invention, both vehicles can be guided on a non-colliding trajectory by means of remote communication.

In an advantageous manner, an agreement on the appropriate variant (braking, avoidance) can be found to reduce the risk.

According to the invention, a longitudinal guidance system in a vehicle having an surroundings detection system is set up to carry out a method according to one of the preceding claims.

list of figures

• 1 shows a dangerous traffic situation. The vehicle 1 with the surroundings detection system 3 monitors the oncoming lane and detects an accident 7 and an oncoming vehicle 9. Furthermore, a lane change 6 of the oncoming vehicle 9 is detected. The own vehicle 1 is then guided on an evasion trajectory 5.
• 2 shows the exemplary sequence of a method. In the first step 13, information about the surroundings is collected via the surroundings detection system. In next step 15, an obstacle such as an accident, a pedestrian, a breakdown vehicle or a parked vehicle on the oncoming lane is recognized. In next step 17, an oncoming vehicle is searched for on the opposite lane. If there is no vehicle, it jumps back and continues to monitor the opposite lane.

If, however, an oncoming vehicle is detected, then a warning 18 to the driver (s). Further, in the next step 19 comparing the width of the oncoming vehicle and the own vehicle and determining if the road is wide enough for both vehicles.

In next step 21 the difference speed of the two vehicles is determined and in the following step 23 Checked if there is a possibility of collision.

If no collision possibility exists in next step 24 Both vehicles indicated a safe path on which both vehicles do not collide.

If there is a possibility of collision, the next step is 25 via v2v communication made an agreement on which vehicle should pass the obstacle first.

In the following step 27 will the agreement from step 25 implemented in such a way that the vehicles are either automatically guided on the trajectory or the driver is shown the danger and how they have to behave further. For example, the driver can be visually displayed a trajectory to be traveled, which they then follow. Optionally, a braking of at least one of the vehicles takes place.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102010045162 A1 [0002]
• DE 102010006214 A1 [0003]

Claims (9)

Method for warning against oncoming vehicles (9) in a vehicle (1) having an surroundings detection system (3) which monitors an oncoming lane and issues a warning message (18) or carries out a braking (27) if an obstacle or a pothole (7) be recognized on the opposite lane and an oncoming vehicle (9). Method according to Claim 1 , wherein in addition to the output of the warning message (18) in addition a braking (27) of the vehicle (1) is initiated. Method according to one of the preceding claims, wherein a warning (18) is also issued to the oncoming vehicle (9). Method according to one of the preceding claims, wherein a collision probability with the oncoming vehicle (9) is determined and at least the warning message (18) or at least the braking (27) is issued or initiated based on the collision probability. Method according to one of the preceding claims, wherein furthermore a lane change request of the oncoming vehicle (9) is detected and at least the warning message (18) or at least the braking (27) is output or initiated based on the recognized lane change request. Method according to one of the preceding claims, wherein an evasion trajectory is determined and this displayed to the driver or the vehicle (1, 9) is automatically guided on this. Method according to one of the preceding claims, wherein a braking (27) of the oncoming vehicle (9) is initiated. Method according to one of the preceding claims, wherein by means of remote communication both vehicles (1, 9) are guided on a non-colliding trajectory. Longitudinal guidance system in a vehicle (1) with an environment detection system (3) which is set up to carry out a method according to one of the preceding claims.

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