DE102012005245A1 - Method for assisting driver of motor vehicle by overtaking process on oppositely drivable lane, involves detecting environment size described by environment of motor vehicle - Google Patents

Abstract

The method involves detecting an environment size (9) described by an environment of the motor vehicle. The overtaking process is initialized depending on the environment size, if the vehicle environment has an overtaking object, a oncoming traffic object and a gap between the overtaking object and the oncoming traffic object. An independent claim is also included for a motor vehicle is arranged, adapted or equipped with a sensor or communication unit and software for executing driver assistance method.

Description

The invention relates to a method for assisting a driver of a motor vehicle in an overtaking operation on a road that can be driven in the opposite direction as well as a motor vehicle according to the method.

For motor vehicles so-called driver assistance systems are known, which can relieve a driver of the motor vehicle of typical driving tasks, in particular decisions. It is known to determine by means of sensor devices an environment of the motor vehicle descriptive environment size and to generate based on these warnings and / or interference in a driving dynamics of the motor vehicle. In particular, driver assistance systems are known which support a driver of the motor vehicle during overtaking operations.

The object of the invention is to assist a driver of a motor vehicle in an overtaking operation on an oppositely driveable two-lane roadway, which, however, can also be used in three lanes.

The invention results from the features of the independent claims. Advantageous developments and refinements are the subject of the dependent claims. Other features, applications and advantages of the invention will become apparent from the following description, as well as the explanation of embodiments of the invention, which are illustrated in the figures.

The object is achieved in a method according to claim 1. Advantageously, it can be determined whether the actually two-lane roadway can also be used in three lanes for overtaking. This can advantageously be determined on the basis of the leaks, wherein an overtaking operation can take place precisely when the gap exceeds a width of the motor vehicle, so that the motor vehicle can drive into the gap during the overtaking, ie can overtake the overtaking object despite the oncoming traffic object.

The object is also achieved by a method according to claim 2. Advantageously, in the case of particularly slow-moving columns, the overtaking process can nevertheless be initiated. By initiating the overtaking operation, it can be understood that this is indicated to the driver of the motor vehicle. Furthermore, initiation can be understood to mean that this is started automatically and / or semi-automatically, in particular only in such a way that the driver of the motor vehicle can overrule this and / or he has previously selected this so that he can not be surprised by the beginning overtaking process. Alternatively or additionally, initiating means that warning signals, in particular for the other road users, are generated and / or output. This can be understood in particular by initiating, if the driver himself starts the overtaking process and this is recognized by the motor vehicle.

Preferred embodiments of the methods are carried out according to claim 3. Under a cooperative distance can be understood that the other road users, in particular the first column object and the second column object react to the incipient overtaking of the motor vehicle and leave for the motor vehicle a distance between them, the motor vehicle can use if necessary, if the oncoming traffic object on the Oncoming lane shows up. Characteristics for cooperative distance between the vehicles of the column are identifiable as sufficient gap length in the longitudinal direction and / or slowing of the second vehicle of the column to provide a sufficient gap length. Using the cooperative distance, it can be understood that this is displayed to the driver of the motor vehicle. Alternatively or additionally, however, it can also be understood that by means of an automatic intervention in a longitudinal and / or transverse dynamics of the motor vehicle, an automatic cutting into the gap between the column objects produced by means of the cooperative distance takes place.

Further preferred embodiments of the method are carried out according to claim 4. A distance between the overtaking object and the oncoming traffic object is understood in particular to mean a vertical projection, that is to say a minimum distance between the overtaking object and the oncoming traffic object if these are at the same height. Advantageously, even if the overtaking object and the oncoming traffic object are still far away from each other, by means of a prediction of their driving trajectories the smallest distance between them in the sense of the probable distance can be predicted. Advantageously, it can be predicted whether, in the worst case, ie when the motor vehicle, the oncoming traffic object and the overtaking object are exactly at the same height during the overtaking process, the gap is still sufficiently large to avoid a collision.

Further preferred embodiments of the method are carried out according to claim 5. Advantageously, a difference can be formed thereby, so as to obtain information about whether, even if the overtaking object and the oncoming traffic object, the roadway 5 exploit completely, so up to an extreme edge of the road 5 drive, the gap or the expected distance 35 if these are at the same level, can suffice. Advantageously, a decision can already be made as to whether an overtaking operation makes sense or not. Advantageously, thereby also a prediction of the probable distance 35 take place, if currently the overtaking object and the oncoming traffic object do not drive exactly at the outermost edge of the roadway, it can be assumed that in case the motor vehicle starts the overtaking process, this due to warnings and / or the like then to the edge of the roadway 5 drive.

Further preferred embodiments of the method are carried out according to claim 6. Advantageously, the other road users can be warned by means of the warning signal, in particular to actually produce the probable distance, in particular in order to move them to leave enough space for the overtaking.

Further preferred embodiments of the method are carried out according to claim 7, advantageously the driver behavior of the driver can be determined first. If this increases the speed and / or performs a steering intervention to Ausscheren, it can be concluded that the overtaking process begins so that it can be initiated, in particular by emitting the audible and / or visual warning signal and / or a corresponding display and / or Warning message to the driver of the motor vehicle.

Further preferred embodiments of the method are carried out according to claim 8. Advantageously, data of the oncoming traffic object can be made available directly to the motor vehicle, in particular a length, width, acceleration, speed, position or distance of motor vehicle ( 1 ), Orientation and / or the like of the oncoming traffic object. Alternatively or additionally, the communication infrastructure comprises a mobile device, in particular a mobile radio device. Advantageously, a display and / or the initiation of the overtaking process by means of the mobile device. Alternatively or additionally, the mobile device can be assigned to the motor vehicle by data technology and / or mechanically and / or be connected to it.

Further preferred embodiments of the method are carried out according to claim 9, Advantageously, the driver can be made aware that he can start the overtaking process. Alternatively or additionally, the driver may be recommended a speed and / or an acceleration and / or suitable time for initiating the overtaking procedure and / or the like. Alternatively or additionally, graphic representations, in particular of the overtaking object and / or the traffic situation, can also be presented to the driver for initiating the overtaking process.

The object is also achieved by a motor vehicle, set up, designed, constructed for performing a method described above and / or equipped with software for performing the method described above. This results in the advantages described above.

Further advantages, features and details will become apparent from the following description in which - where appropriate, with reference to the drawings - at least one embodiment is described in detail. Described and / or illustrated features form the subject of the invention, or independently of the claims, either alone or in any meaningful combination, and in particular may additionally be the subject of one or more separate applications. The same, similar and / or functionally identical parts are provided with the same reference numerals.

Show it:

1 a schematic side view of a motor vehicle with a driving assistance device for assisting the driver in an overtaking operation;

2 a schematic view of a traffic situation during an overtaking process of the motor vehicle 1 ;

3 another schematic view of a traffic situation in which the motor vehicle 1 a column overhauled;

4 a schematic sequence for initiating the in 2 overtaking process shown; and

5 a schematic sequence for initiating the in 3 overtaking process shown.

1 shows a schematic side view of a motor vehicle 1 by a driver 3 is served.

The car 1 has a man-machine interface 53 on, by means of which the driver 3 the car 1 can serve. In addition, the motor vehicle 1 a driver assistance system, via a central control device 51 and one of the control device 51 upstream sensor device 55 features.

By means of the sensor device 55 can be an an environment 7 of the motor vehicle 1 descriptive environment size 9 be determined. The environmental size 9 is the central control device 51 to disposal. The central control device 51 is particularly designed to intervene in a longitudinal and / or transverse dynamics of the motor vehicle 1 execute and / or is designed to man-machine interface 53 to control and / or from this corresponding user input of the driver 3 to absorb and process. The driving assistance device of the control device 51 serves to assist the driver 3 during an overtaking process 11 ,

Such a passing process 11 is in 2 shown schematically.

2 shows a schematic view of a traffic situation in which the motor vehicle 1 located. This drives a carriageway 5 , the opposite direction is passable. As a special feature is the roadway 5 so wide that it can be used in three lanes if necessary.

According to 2 the driver wants 3 of the motor vehicle 1 an overtaking process 11 perform, although the motor vehicle 1 on a counter traffic lane 17 an oncoming traffic object 19 approaches.

The driver 3 of the motor vehicle 1 first drives his lane 15 the roadway 5 ,

Once he is an overtaking object 13 approaching, the overtaking process 11 who in 2 is symbolized by a curved arrow initiated. This is initially a gap 21 between the overtaking object 13 and the oncoming traffic object 19 determined. This will be an estimated distance 35 under optimal conditions then between the overtaking object 13 and the motor vehicle 1 remains, if they are at the same height determined. If the expected distance 35 the gap 21 a width of the motor vehicle 1 exceeds, the overtaking process can be safely performed. The overtaking process then becomes advantageous 11 initiated, for example by means of a corresponding display on the man-machine interface 53 , In addition, in addition to initiating a warning signal 43 generated by the oncoming traffic object 19 and the overtaking object 13 is perceptible. In particular, this is an acoustic warning signal, in particular a horn and / or an optical warning signal, in particular a flashing light. Advantageously can thereby the oncoming traffic object 19 and the overtaking object 13 about the overtaking process 11 be informed, so that they are actually the gap 21 and thus the expected distance 35 produce or receive.

The overtaking object 13 has a width 39 on. The oncoming traffic object 19 has another width 41 on. The roadway 5 has a lane width 37 on. The expected distance 35 or a maximum possible value of the probable distance 35 can be beneficial by the difference in the roadway width 37 minus the width 39 minus the wider width 41 be determined.

3 shows another schematic traffic situation.

In contrast to the representation according to 2 is located in front of the motor vehicle 1 a column 23 and the roadway 5 has a curvature 25 on. A speed 27 the column 23 is less than a limit speed and also significantly less than a possible driving speed on the road 5 can be driven.

In the illustration according to the 3 has the motor vehicle 1 just to start the overtaking process 11 a median strip 45 the roadway 5 run over. Before that, the overtaking process was initiated, leaving the warning signal 43 is issued. Advantageously, by the warning signal 43 the column 23 , in particular a first column object 31 and a second column object 33 about the beginning overtaking process 11 of the motor vehicle 1 be informed. Advantageously can then from the first column object 31 and the second column object 33 a cooperative distance 29 be enlarged, what in 3 symbolized by a dotted double arrow. The cooperative distance becomes advantageous 29 adjusted so that the motor vehicle 1 between the first column object 31 and the second column object 33 if necessary, namely, if and only if the oncoming traffic object 19 has approached too far. Advantageously, thereby despite the oncoming traffic object 19 the overtaking process 11 occur. An actual driving trajectory of the overtaking process 11 depends on the presence of the oncoming traffic object 19 from, where in 3 for clarity, two different driving trajectories are shown, namely a first driving trajectory, the cooperative distance 29 uses and a second driving trajectory covering the entire column 23 overtaken as a whole in an unhindered overtaking process.

4 shows a schematic sequence of an overtaking process as shown in FIG 2 , In a first step 57 will be the environment size 9 determined. In a first branch 65 it checks if the environment size 9 the overtaking object 13 has, the oncoming traffic object 19 has and if the gap 21 or the expected distance 35 are greater than a width of the motor vehicle 1 , If this is not the case, the environmental size will continue 9 cyclical determined. If this is the case, however, in a second step 59 , as described above, the overtaking process 11 initiated.

5 shows a further schematic sequence of the in 3 overtaking process shown.

In a third step, the environmental size 9 determined. In a second branch 67 it checks if the environment size 9 the column 23 has and whether the roadway 5 the curvature 25 having. It also checks if the speed 27 the column is less than a limit speed, which means a third branch 69 is checked. If so, the second branch branches 67 in a fourth step 63 in which the overtaking process 11 is initiated. If not, the second branch branches 67 back to the third step 61 , so the environmental size 9 is determined cyclically.

According to the presentation of the 2 is in particular a communication infrastructure 47 present over which the motor vehicle 1 , the overtaking object 13 as well as the oncoming traffic object 19 are in a data connection, in particular the environmental size 9 to investigate.

As in 3 to recognize, points the roadway 5 the curvature 25 and also a visual obstruction 49 on. Advantageously, due to the determination of the environmental size 9 and initiating the overtaking process 11 , in particular in connection with the emission of the warning signal 43 , yet a safe overtaking of the column 23 respectively.

Advantageously, a dynamic velocity-adjusted estimation is performed, in particular by determining the probable distance 35 , a virtual number of traffic lanes, in particular with the help of the environment size 9 and / or with the help of a in the motor vehicle 1 available digital map. In particular, one is in front of the motor vehicle 1 lying distance of 100-300 meters measured and / or prepared by the available roadway width 37 the roadway 5 to determine and / or predict. Advantageously, thereby one of the median strip 45 and the existing lane 15 and the opposite lane 17 Independent determination of the virtual lanes done.

In particular, the communication infrastructure 47 Have mobile phones. In particular, so-called applications for the mobile phones may be provided. These mobile phone applications, especially the slow-moving overtaking object 13 , in particular, also for detecting the environmental size 9 be used, in particular, if they also have a sensor device 55 feature. Advantageously, data such as a relative distance, a speed and / or an acceleration to a follow-up traffic, in this case to the motor vehicle 1 to be communicated.

The car 1 This can advantageously provide a more reliable basis for the environmental size 9 win and thus better estimate whether the overtaking process 11 without collision is possible, and / or at what speed this should be performed. If not, can be beneficial to the driver 3 of the motor vehicle 1 a warning message will be displayed, that if necessary the overtaking process 11 not sure is feasible. In the event that this is safely feasible, can also be the driver 3 of the motor vehicle 1 a corresponding note will be given. In particular, the driver can 3 of the motor vehicle 1 a speed recommendation and / or appropriate time to initiate the overtaking process are issued.

Although the invention has been further illustrated and explained in detail by way of preferred embodiments, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention. It is therefore clear that a multitude of possible variations exists. It is also to be understood that exemplified embodiments are really only examples that are not to be construed in any way as limiting the scope, applicability, or configuration of the invention. Rather, the foregoing description and description of the figures enable one skilled in the art to practice the exemplary embodiments, and those of skill in the knowledge of the disclosed inventive concept may make various changes, for example, to the operation or arrangement of particular elements recited in an exemplary embodiment, without Protected area, which is defined by the claims and their legal equivalents, such as further explanation in the description.

LIST OF REFERENCE NUMBERS

1

motor vehicle

3

driver

5

roadway

7

Surroundings

9

environment size

11

overtaking

13

Überholobjekt

15

lane

17

oncoming lane

19

Oncoming traffic object

21

gap

23

column

25

curvature

27

speed

29

cooperative distance

31

first column object

33

second column object

35

expected distance

37

roadway width

39

width

41

wider width

43

warning

45

central reservation

47

communications infrastructure

49

Obstructed view

51

control device

53

Human-machine interface

55

sensor device

57

first step

59

second step

61

Third step

63

fourth step

65

first branch

67

second branch

69

third branch

Claims (10)

Method for supporting a driver ( 3 ) of a motor vehicle ( 1 ) in an overtaking process ( 11 ) on an oppositely driveable roadway ( 5 ), with: - detecting an environment ( 7 ) of the motor vehicle ( 1 ) descriptive environment size ( 9 ), - initiating the overtaking process ( 11 ) depending on the environment size ( 9 ), if this one in front of the motor vehicle ( 1 ) and on the lane of the road ( 5 ) of the motor vehicle ( 1 ) overtaking object ( 13 ), one on an opposite lane ( 17 ) of the roadway ( 5 ) oncoming oncoming traffic object ( 19 ) and a width of the motor vehicle ( 1 ) exceeding gap ( 21 ) between the overtaking object ( 13 ) and the oncoming traffic object ( 19 ) having. Method for supporting a driver ( 3 ) of a motor vehicle ( 1 ) in an overtaking process ( 11 ) on an oppositely driveable roadway ( 5 ), with: - detecting an environment ( 7 ) of the motor vehicle ( 1 ) descriptive environment size ( 9 ), - initiating the overtaking process ( 11 ) depending on the environment size ( 9 ), if this one in front of the motor vehicle ( 1 ) and on one of the motor vehicle ( 1 ) traffic lane ( 15 ) of the roadway ( 5 ) column ( 23 ), a curvature ( 25 ) of the roadway ( 5 ) and a speed ( 27 ) of the column ( 23 ), which falls below a limit speed has. Method according to the preceding claim, comprising: - detecting a cooperative distance ( 29 ) between a first column object ( 31 ) and one in front of the first column object ( 31 ) moving second column object ( 33 ), - benefit of cooperative distance ( 29 ) during the overtaking process ( 11 ). Method according to one of the preceding claims, comprising: - determining the gap ( 21 ) as the expected distance ( 35 ) between the overtaking object ( 13 ) and the oncoming traffic object ( 19 ). Method according to the preceding claim, comprising: - determining the anticipated distance ( 35 ) depending on a lane width ( 37 ) of the roadway ( 5 ) of the environment size ( 9 ), a width ( 39 ) of the overtaking object ( 13 ) and another width ( 41 ) of the oncoming traffic object ( 19 ) of the environment size ( 9 ). Method according to one of the preceding claims, comprising: - automatic transmission of a signal in the surroundings of the motor vehicle ( 1 ) perceptible acoustic and / or visual warning signal ( 43 ) for initiating the overhaul process ( 11 ) and / or during the overtaking process ( 11 ). Method according to one of the preceding claims, comprising: initiating the overtaking process as a function of the driving behavior of the driver ( 3 ) of the motor vehicle ( 1 ). Method according to one of the preceding claims, comprising: determining the oncoming traffic object ( 19 ) by means of a vehicle-to-vehicle communication infrastructure ( 47 ). Method according to one of the preceding claims, comprising: displaying a possibility of the overtaking process in one for the driver ( 3 ) of the motor vehicle ( 1 ) perceptible manner for initiating the overtaking process. Motor vehicle ( 1 ), designed, designed, constructed and / or equipped with a sensor and / or communication unit and software for carrying out a method according to one of the preceding claims.

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