CN112277795A - Warning of a possible collision of a motor vehicle - Google Patents
Warning of a possible collision of a motor vehicle Download PDFInfo
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- CN112277795A CN112277795A CN202010703365.6A CN202010703365A CN112277795A CN 112277795 A CN112277795 A CN 112277795A CN 202010703365 A CN202010703365 A CN 202010703365A CN 112277795 A CN112277795 A CN 112277795A
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- 230000003287 optical effect Effects 0.000 claims abstract description 45
- 230000033001 locomotion Effects 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000004364 calculation method Methods 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims 9
- 230000006870 function Effects 0.000 description 14
- 230000001133 acceleration Effects 0.000 description 9
- 230000007613 environmental effect Effects 0.000 description 5
- 238000004590 computer program Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000021317 sensory perception Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
- B60Q9/008—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for anti-collision purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/525—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking automatically indicating risk of collision between vehicles in traffic or with pedestrians, e.g. after risk assessment using the vehicle sensor data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
- B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
- B60Q5/006—Arrangement or adaptation of acoustic signal devices automatically actuated indicating risk of collision between vehicles or with pedestrians
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
Abstract
In a method for warning about a possible collision of a motor vehicle (7) with another motor vehicle (8), the other motor vehicles (8) in the surroundings (9) of the motor vehicle (7) are identified by means of a sensor system (10, 11) of the motor vehicle (7). At least one motion parameter of the motor vehicle (7) and at least one further motion parameter of the further motor vehicle (8) are determined by means of the sensor system (10, 11). An expected trajectory (13) of the motor vehicle (7) and expected further trajectories (14) of further motor vehicles (8) are determined by means of a calculation unit (12) of the motor vehicle (7) on the basis of the motion parameters. A collision probability is determined by means of a computing unit (12) on the basis of the trajectories (13, 14) and an optical warning signal and/or an acoustic warning signal is automatically output into the surroundings (9) of the motor vehicle (7) by means of an output unit (15, 16) of the motor vehicle (7) on the basis of the collision probability.
Description
Technical Field
The invention relates to a method for warning of a possible collision of a motor vehicle with another motor vehicle (or for warning of a possible collision of a motor vehicle with another motor vehicle), wherein the other motor vehicles are identified in the surroundings of the motor vehicle by means of a sensor system of the motor vehicle. The invention also relates to a corresponding warning system and to a motor vehicle having such a warning system.
Background
A traffic accident in which two vehicles collide face-to-face may have serious consequences. In oncoming traffic scenarios, active avoidance maneuvers tend to have higher risks due to higher relative speeds and limited available space. For vehicles causing a possible imminent collision, the vehicle can usually return to its own lane. However, this situation is more difficult to handle for vehicles driving head-on towards the vehicle causing the situation. Imminent frontal collision situations are often caused by the inattention of one or both drivers.
DE 102004057060 a1 describes a driver assistance device for a vehicle and a method for detecting other vehicles coming into the head on the own lane of the vehicle.
In this case, however, the risk of collision has been relatively high because the oncoming vehicle has already traveled on the lane of the oncoming vehicle. The risk of failure to prevent a collision is correspondingly high.
Disclosure of Invention
Against this background, the object of the invention is to provide an improved solution for warning of possible collisions of a motor vehicle with other motor vehicles, by means of which an earlier warning can be made.
The object is achieved by a method for warning a possible collision of a motor vehicle with another motor vehicle, a warning system for a motor vehicle and a motor vehicle having a warning system.
The improved scheme is based on the following conception: the expected trajectory of the motor vehicle is predicted on the basis of the movement parameters determined by means of the sensor system, and a warning signal is automatically output as a function of the collision probability calculated therefrom.
According to a first independent aspect of the development, a method for warning of a possible collision of a motor vehicle with another motor vehicle, in particular for warning of the other motor vehicle and/or a driver of the other motor vehicle, is specified, wherein the other motor vehicle is identified in the surroundings of the motor vehicle by means of a sensor system of the motor vehicle. At least one motion parameter of the motor vehicle is determined by means of the sensor system, and at least one further motion parameter of the further motor vehicle is determined by means of the sensor system. Determining, by means of a calculation unit of the motor vehicle, an expected trajectory of the motor vehicle on the basis of the at least one motion parameter, and determining, by means of the calculation unit, an expected further trajectory of the further motor vehicle on the basis of the at least one further motion parameter. A collision probability, in particular of the motor vehicle with the other motor vehicle, is determined by means of a unit as a function of the trajectory and the other trajectory. The optical warning signal and/or the acoustic warning signal are automatically output to the surroundings of the motor vehicle by means of an output unit of the motor vehicle as a function of the collision probability.
The term "detecting other vehicles in the surroundings of the vehicle" is to be understood in particular to mean that other vehicles are determined to be in the surroundings by means of the sensor system. The surroundings can in particular correspond to the detection region or the field of view of the sensor system. Optionally, the identification of the further vehicle may also comprise determining the position of the further vehicle and/or tracking the further vehicle, i.e. continuously determining the position of the further vehicle.
A motion parameter is understood to mean, in particular, a measured variable which is dependent on the motion of the respective motor vehicle. The motion parameters may include, in particular, the speed, the angular speed or the rate of rotation, the acceleration or the angular acceleration of the respective vehicle or parameters derived from one or more of these parameters.
The sensor system can accordingly comprise one or more sensors, in particular at least partially different sensor types. The sensors may include, for example, a radar sensor system, a lidar sensor system, a camera system, or other environmental sensors. These environmental sensors can be used in particular for determining at least one further movement parameter of a further motor vehicle. Furthermore, the sensors of the sensor system may comprise a speed sensor system, such as a longitudinal speed sensor system, a steering angle sensor system, a yaw rate sensor system, an acceleration sensor system, such as a lateral acceleration sensor system, or the like. These sensors can be used in particular for determining at least one motion parameter of the motor vehicle.
The determination of the expected trajectory or of the expected further trajectory by means of the computing unit comprises in particular the computation of corresponding expected, approximated or estimated coordinates of temporally successive positions and/or orientations of the motor vehicle or of the further motor vehicle within a future predetermined time period. The time period may be, for example, in the order of a few seconds.
The coordinates and/or the orientation of the position are stored in particular by means of a computing unit in a storage medium of the motor vehicle.
The output unit may comprise one or more devices for generating an optical and/or acoustic warning signal.
The output unit may comprise, for example, a vehicle lighting device of a motor vehicle or a part of said lighting device, for example one or more searchlights (Scheinwerfer), in particular headlights, for example high beams, of the motor vehicle, in order to output an optical warning signal. Alternatively or additionally, the output unit may comprise a vehicle horn of a motor vehicle in order to output an acoustic warning signal.
In various embodiments, the output unit can also comprise a control device of the motor vehicle for controlling a vehicle lighting or a horn. The control device may also be part of the calculation unit.
The optical and/or acoustic warning signal is output in particular to the surroundings of the motor vehicle in such a way that the driver of the other motor vehicle can detect it under normal conditions or generally by means of a sensor. The optical and/or acoustic warning signal is provided in particular for sensory perception by a person, i.e. in particular comprises visible light or audible sound.
The automatic output of the optical and/or acoustic warning signal can be understood in particular in that the output unit is automatically controlled by the computing unit and/or the control device as a function of the collision probability in order to output the optical and/or acoustic warning signal, in particular without the driver of the motor vehicle having to manually operate the output unit or the operating element.
By outputting an optical and/or acoustic warning signal, a collision warning can be issued to the driver of the other motor vehicle with a sufficiently high probability of collision, so that the driver can react early and take risk-reducing measures, in particular steering and/or braking actions, in order to prevent a collision or reduce the risk of a collision.
Since the improved solution is based on a prediction of the expected trajectory, a possible risk of collision can be identified particularly early. In order to automatically output the warning signal, the other motor vehicle in particular does not have to be located completely or partially on the same lane as the motor vehicle. Thereby improving safety.
From the perspective of the driver of the motor vehicle, the risk of collision is thereby reduced by warning the oncoming vehicle without the driver of the motor vehicle having to perform his own driving maneuver. This is advantageous because the space available for avoidance by the driver of the motor vehicle is often very limited, especially when the situation occurs outside a city. In addition, the relative speed of the motor vehicle is particularly high in these cases. In these cases, for example, the driving manoeuvre of other vehicles causing an imminent collision is generally at lower risk than the driving manoeuvre of said vehicles.
According to at least one embodiment of the method, at least one additional expected trajectory of the motor vehicle is determined by means of the computing unit on the basis of the at least one motion parameter and/or at least one additional expected further trajectory of the further motor vehicle is determined by means of the computing unit on the basis of the at least one further motion parameter.
In these embodiments, the collision probability can be determined by means of a computing unit from the expected trajectory and the additional trajectory and the further trajectory and the additional further trajectory.
The trajectories and additional trajectories can correspond to different scenarios considered on the basis of the available motion parameters and other motion parameters. For example, a probability of the assignment or a confidence value of the assignment may be calculated for the expected trajectory and the additional trajectory, respectively, by means of the calculation unit on the basis of the at least one motion parameter. This similarly applies to the other tracks and additional other tracks. The collision probability can then be determined from the probability or the confidence value by means of the computing unit.
In at least one embodiment, an optical warning signal is automatically output by means of a lighting device of the motor vehicle, in particular an output unit, as a function of the collision probability.
Since motor vehicles usually have an illumination device in the first place, advantageously no additional hardware is required for outputting an optical warning signal by means of the illumination device.
The lighting device is in particular one or more floodlights (or headlights) and/or high beams of a motor vehicle.
In at least one embodiment, an acoustic warning signal is output automatically by means of a vehicle horn of the motor vehicle, in particular an output unit, as a function of the collision probability.
Motor vehicles usually also have a vehicle horn per se, so that advantageously no additional hardware is required for outputting an acoustic warning signal.
In at least one embodiment, the distance between the motor vehicle and the further motor vehicle is determined by means of a sensor system. The acoustic warning signal is automatically output by the output unit as a function of the collision probability only if the distance is greater than or equal to a predetermined minimum distance and less than or equal to a predetermined maximum distance.
In particular, the distance is compared with a minimum distance and a maximum distance by means of a computing unit, and in particular, an acoustic warning signal is automatically output by means of an output unit as a function of the collision probability, depending on the result of the comparison, only if the distance is greater than or equal to a predetermined minimum distance and less than or equal to a predetermined maximum distance.
If the distance is too small, in particular smaller than a minimum distance, the output of an acoustic warning signal may be of no consequence, since the warning signal can no longer be perceived by the driver of the other motor vehicle in good time, or since the perceived time delay is too great due to the limited sound speed if the distance is too great.
If the distance is greater than or equal to a predetermined minimum distance and less than or equal to a predetermined maximum distance, an optical warning signal and an acoustic warning signal can be output by means of the output unit, for example, depending on the collision probability.
If the distance is less than the minimum distance and greater than the maximum distance, for example, only an optical warning signal and not an acoustic warning signal can be output by means of the output unit as a function of the collision probability.
In at least one embodiment, the probability of collision is compared with a predetermined limit value by means of a computing unit and, in particular, an optical warning signal and/or an acoustic warning signal is output by means of an output unit, specifically if the probability of collision is greater than or equal to the limit value.
This avoids the warning signal being output when the probability of a collision is relatively low and this leads to an unnecessary distraction of the driver of the motor vehicle or of the driver of another motor vehicle.
In at least one embodiment, the optical warning signal is output by the output unit automatically as a time-modulated (or temporally) light signal as a function of the probability of collision.
The term "light" is understood here and in the following as visible light, in particular. The term "optical" is accordingly also to be understood as meaning light in accordance with the above understanding.
The modulation of the light signal over time means in particular that the intensity of the light varies over time.
By modulating the time, on the one hand, a better recognition of the optical warning signal is achieved for the driver of the other motor vehicle, and on the other hand, this enables the optical signal to be detected, recognized and further processed automatically by means of the other motor vehicle, in particular by means of an optical detector of the other motor vehicle.
The other motor vehicle can thus take other risk-reducing measures on the basis of the detected optical warning signal, for example an automated braking or steering maneuver of the other motor vehicle and/or the generation of a driver warning signal in the interior of the other motor vehicle.
In at least one embodiment, the optical warning signal is output automatically as a light signal with a periodically varying intensity by means of an output unit as a function of the probability of collision.
In at least one embodiment, the light signal with a periodically varying intensity has a predetermined frequency, which may be in the range between 0.1Hz and 50Hz, for example, and in particular between 1Hz and 10H.
This also enables better recognition of the optical warning signal for the driver of the other motor vehicle or enables automatic recognition and further processing of the optical warning signal.
In at least one embodiment, when an optical or acoustic warning signal is output by means of the output unit, i.e. when an optical or acoustic warning signal is output, an information signal is output by means of a user interface of the motor vehicle, in particular to a driver of the motor vehicle, i.e. in particular to an interior of the motor vehicle.
The information signal may be, in particular, an acoustic, visual and/or tactile signal to the driver of the motor vehicle.
The driver of the motor vehicle can thus react as well if necessary by, for example, manually assuming a braking maneuver and/or a steering maneuver. Thereby further improving safety.
According to a further independent aspect of the development, a warning system for a motor vehicle is specified for warning of a possible collision of the motor vehicle with another motor vehicle, wherein the warning system has a sensor system, a computing unit and an output unit. The sensor system is provided for detecting other vehicles in the surroundings of the vehicle. The sensor system is provided for determining at least one motion parameter of the motor vehicle and at least one other motion parameter of the other motor vehicle. The calculation unit is provided for determining an expected trajectory of the motor vehicle on the basis of the at least one motion parameter and for determining an expected further trajectory of the further motor vehicle on the basis of the at least one further motion parameter. The calculation unit is arranged for determining a collision probability from the trajectory and the further trajectory. The output unit is provided for automatically outputting an optical warning signal and/or an acoustic warning signal into the surroundings of the motor vehicle as a function of the collision probability.
Other embodiments of the warning system result directly from different embodiments of the method according to the improved variant and vice versa.
The warning system according to the improved version may in particular be provided or programmed for carrying out the method according to the improved version or the warning system according to the improved version carries out the method according to the improved version.
According to a further independent aspect of the improved solution, a motor vehicle is specified, which has a warning system according to the improved solution.
According to a further independent aspect of the improved arrangement, a computer program with instructions is defined. When the computer program is executed by a warning system according to the improved scheme, the instructions cause the warning system to perform the method according to the improved scheme.
According to a further independent aspect of the refinement, a computer-readable storage medium is provided on which a computer program according to the refinement can be stored.
The invention also includes an extended design of the warning system according to the invention with the features already described in connection with the extended design of the method according to the invention. For this reason, a corresponding development of the warning system according to the invention will not be explicitly described here.
The invention also comprises combinations of features of the described embodiments.
Drawings
In the drawings:
fig. 1 shows a motor vehicle and other motor vehicles with an exemplary embodiment of a warning system according to an improved variant and
fig. 2 shows a flow chart of an exemplary embodiment of a method according to the improved scheme.
Detailed Description
The examples set forth below are preferred embodiments of the invention. In the exemplary embodiments, the described components of the individual embodiments each represent individual features of the invention which can be considered independent of one another, which also each improve the invention independently of one another and can therefore also be considered as components of the invention, either individually or in combinations differing from the combinations shown. Furthermore, the described embodiments can also be supplemented by other features of the invention which have already been described.
In the figures, elements having the same function are each provided with the same reference numeral.
Fig. 1 shows a motor vehicle 7 having a warning system 18 according to an improved embodiment.
The warning system 18 has an environmental sensor 10, for example a camera, a radar or lidar system, and one or more motion sensors 11, for example a speed sensor, a yaw rate sensor, an acceleration sensor or the like, in order to determine one or more motion parameters of the motor vehicle, in particular a longitudinal speed, an acceleration, for example a lateral acceleration, an orientation and/or a rate of rotation.
The warning system 18 also has a computing unit 12, which is connected to the surroundings sensor system 10 and the motion sensor 11. Furthermore, the motor vehicle 7 or the warning system 18 has a high beam 15 of the motor vehicle 7.
Optionally, the warning system 18 has a vehicle horn 16 of the motor vehicle 7.
Optionally, the motor vehicle 7 or the warning system 18 has a user interface 17.
Optionally, other vehicles 8 may contain other computing units 20, other environmental sensors with optical detectors 19, and/or other user interfaces 21.
The functionality of warning system 18 is explained in detail below with reference to fig. 2, according to an exemplary embodiment of the method according to the improved variant.
In step 1 of the method, the presence of a further motor vehicle 8 in the surroundings 9 of the motor vehicle 7 is detected by means of an environment sensor 10 of the motor vehicle 7.
In step 2 of the method, at least one motion parameter of the motor vehicle 7, in particular the speed, acceleration and orientation of the motor vehicle 7, is determined by means of the motion sensor 11. For this purpose, the respective measured values of the at least one motion sensor 11 can be evaluated and/or processed by means of the evaluation unit 12.
In step 2, at least one further motion parameter of the further motor vehicle 8, in particular the speed, acceleration and orientation of the further motor vehicle 8, is also determined by means of the surroundings sensor 10. In particular, the image information detected by means of the surroundings sensor 10 can be evaluated by the evaluation unit 12 in order to determine at least one further movement parameter.
In step 3 of the method, a computing unit 12 of the motor vehicle 7 computes at least one expected trajectory 13 of the motor vehicle 7, which is shown in fig. 1 by way of example. The motor vehicle 7 moves along a straight line at a constant speed, for example.
In step 3, the calculation unit 12 also calculates at least one expected further trajectory 14 of the further motor vehicle 8, which is also schematically illustrated in fig. 1, on the basis of the at least one further motion parameter. The expected further trajectory 14 describes, for example, a trajectory curve intersecting the expected trajectory 13.
Since the expected trajectories 13, 14 are approximately predicted by means of the computing unit 12 on the basis of the motion parameters and the further motion parameters, the expected trajectories 13, 14 do not necessarily exactly coincide with the actual trajectories of the motor vehicles 7, 8. However, the calculation unit 12 can calculate the value of the collision probability of the two motor vehicles 7, 8 in step 4 on the basis of the expected trajectories 13, 14 and, if necessary, on the basis of further (not shown) expected trajectories for the motor vehicle 7 and/or the further motor vehicle 8.
The calculation unit 12 may also compare the value of the collision probability with a preset limit value, for example in step 4.
In step 5 of the method, the calculation unit 12 modulates the high beam 15 of the motor vehicle 7 or a control unit (not shown) of the motor vehicle 7 to control the high beam 15 in accordance with the value of the collision probability in order to generate a light signal. For this purpose, the high-beam lamp 15 is operated, for example, periodically, at a high frequency, for example, in the range of 1Hz to 30Hz, so that a periodic light signal is emitted into the surroundings 9. In this case, the light signal is generated and emitted only when the probability of collision is greater than or equal to a predetermined limit value.
Alternatively, the computing unit 12 can also generate an acoustic signal for the vehicle horn 16, for example, if the probability of collision is greater than a limit value.
For example, acoustic signals can be generated as a function of the distance between the motor vehicle 7 and the other motor vehicle 8. For example, an acoustic warning signal is generated and output only if the distance is greater than a predetermined minimum distance and less than a predetermined maximum distance.
Alternatively, for example, if the probability of collision is greater than a limit value, the computing unit 12 can output an information signal to the driver of the motor vehicle 7 by means of the user interface 17 in order to inform the driver by activating the system, in particular to emit an optical and possibly acoustic warning signal, and also to indicate the imminent collision to the driver of the motor vehicle 7.
In step 6, the driver of the other vehicle 8 and/or the optional optical detector 19 of the other vehicle 8 detects the modulated light signal. The driver of the other vehicle 8 is thereby informed about the imminent collision and can accordingly take measures to reduce the risk (deeskalierend), in particular to brake the other vehicle 8 and/or to take corresponding steering maneuvers to prevent the collision.
If, for example, additionally or alternatively, the optical signal is detected by the optical detector 19, the optical detector may, for example, generate a detector signal based thereon and transmit it to the further calculation unit 20. Depending on the detector signal, the further computation unit 20 can output a driver warning signal, in particular an optical, acoustic and/or haptic driver warning signal, for example via a further user interface 21 to the driver of the further motor vehicle 8 in order to additionally or with greater reliability indicate an imminent collision to the driver of the further motor vehicle 8. Alternatively, or in addition, the other computing unit 20 can automatically take measures for reducing the risk of collision, i.e. for example automatic steering maneuvers and/or automatic braking maneuvers for the other motor vehicle 8, based on the detector signals.
In particular, a system and a method are specified by way of an improved solution, which warn an oncoming (traffic) vehicle optically and/or acoustically upon detection of a collision risk from the oncoming vehicle, in particular by periodically activating a high beam and, if necessary, by acoustic warning by means of a vehicle horn.
The risk of collision is thereby reduced, in particular by an optical or acoustic warning of the oncoming vehicle, without the driver of the motor vehicle having to perform a driving maneuver.
Since, in particular, the optical warning signal generated, for example, by means of a high beam can be recognized over a long distance and also during the day, the risk of collision can be reduced early.
In various embodiments, the specifically modulated light signal is used as an optical warning signal, which can be automatically detected and processed by other motor vehicles. The optical signal can be received in particular by a camera or a rain sensor of another motor vehicle. In a corresponding embodiment, a defined sequence of switching on and off the high beam can be recognized and processed by other computing units of other motor vehicles.
In various embodiments, the driver of the motor vehicle which transmits the warning signal is informed about the deactivation of the system or the transmission of the warning signal. In addition, the infotainment system may be automatically muted in one or both of the motor vehicles.
List of reference numerals
1 method step
2 method step
3 method step
4 method step
5 method step
6 method step
7 Motor vehicle
8 Motor vehicle
9 surroundings
10 environmental sensor
11 motion sensor
12 calculation unit
13 expected trajectory
14 expected trajectory
15 high beam
16 vehicle horn
17 user interface
18 warning system
19 optical detector
20 other computing units
21 other user interface
Claims (10)
1. A method for warning about a possible collision of a motor vehicle (7) with another motor vehicle (8), wherein the other motor vehicles (8) in the surroundings (9) of the motor vehicle (7) are identified by means of a sensor system (10, 11) of the motor vehicle (7);
it is characterized in that the preparation method is characterized in that,
-determining at least one motion parameter of the vehicle (7) and at least one other motion parameter of the other vehicle (8) by means of the sensor system (10, 11);
-determining an expected trajectory (13) of the motor vehicle (7) based on the at least one motion parameter by means of a calculation unit (12) of the motor vehicle (7), and determining an expected further trajectory (14) of the further motor vehicle (8) based on the at least one further motion parameter;
-determining a collision probability from the trajectory (13) and the further trajectory (14) by means of a calculation unit (12); and is
-automatically outputting an optical warning signal and/or an acoustic warning signal into the surroundings (9) of the motor vehicle (7) by means of an output unit (15, 16) of the motor vehicle (7) as a function of the collision probability.
2. The method of claim 1, wherein the first and second light sources are selected from the group consisting of,
it is characterized in that the preparation method is characterized in that,
the optical warning signal is output automatically as a function of the collision probability by means of a lighting device (15) of the motor vehicle (7).
3. The method according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the acoustic warning signal is output automatically as a function of the collision probability by means of a vehicle horn (16) of the motor vehicle (7).
4. The method of claim 3, wherein the first and second light sources are selected from the group consisting of,
it is characterized in that the preparation method is characterized in that,
-determining the distance between the vehicle (7) and the other vehicle (8) by means of the sensor system (10, 11); and is
-automatically outputting an acoustic warning signal by means of an output unit (15, 16) depending on the collision probability only if the distance is greater than or equal to a preset minimum distance and less than or equal to a preset maximum distance.
5. The method according to one of claims 1 to 4,
it is characterized in that the preparation method is characterized in that,
-comparing the collision probability with a preset limit value by means of a calculation unit (12); and is
-automatically outputting an optical warning signal and/or an acoustic warning signal by means of an output unit (15, 16) when the probability of collision is greater than or equal to the limit value.
6. The method according to one of claims 1 to 5,
it is characterized in that the preparation method is characterized in that,
the optical warning signal is automatically output as a time-modulated light signal by means of an output unit (15, 16) as a function of the probability of collision.
7. The method according to one of claims 1 to 6,
it is characterized in that the preparation method is characterized in that,
the optical warning signal is output by an output unit (15, 16) as a light signal having a periodically varying intensity as a function of the collision probability.
8. The method according to one of claims 1 to 7,
it is characterized in that the preparation method is characterized in that,
when an optical or acoustic warning signal is output by means of the output unit (15, 16), an information signal is output by means of a user interface (17) of the motor vehicle (7).
9. A warning system for a motor vehicle (7) for warning of a possible collision of the motor vehicle (7) with another motor vehicle (8), wherein the warning system (18) has a sensor system (10, 11) which is provided for detecting the other motor vehicle (8) in the surroundings (9) of the motor vehicle (7), and a computing unit (12) and an output unit (15, 16);
it is characterized in that the preparation method is characterized in that,
-the sensor system (10, 11) is provided for determining at least one motion parameter of the motor vehicle (7) and at least one other motion parameter of the other motor vehicle (8);
-the computing unit (12) is arranged for
-determining an expected trajectory (13) of the motor vehicle (7) based on the at least one motion parameter and determining an expected further trajectory (14) of the further motor vehicle (8) based on the at least one further motion parameter; and is
-determining a collision probability from the trajectory (13) and the further trajectory (14); and is
The output unit (15, 16) is provided for automatically outputting an optical warning signal and/or an acoustic warning signal into the surroundings (9) of the motor vehicle (7) as a function of the collision probability.
10. A motor vehicle having a warning system (18) according to claim 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019210977.2A DE102019210977A1 (en) | 2019-07-24 | 2019-07-24 | Warning of a potential collision with motor vehicles |
| DE102019210977.2 | 2019-07-24 |
Publications (1)
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| DE102019210977A1 (en) | 2021-01-28 |
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