WO2018033389A1

WO2018033389A1 - Driver assistance system for passing operations

Info

Publication number: WO2018033389A1
Application number: PCT/EP2017/069503
Authority: WO
Inventors: Friedrich Graf
Original assignee: Continental Automotive Gmbh
Priority date: 2016-08-19
Filing date: 2017-08-02
Publication date: 2018-02-22
Also published as: EP3500471A1; DE102016215565A1

Abstract

The invention relates to a driver assistance system and to a method for automatically identifying and assessing a possible passing maneuver, comprising the following steps: automatically detecting a current position and driving route of the vehicle; detecting a current state of the drive train and a possible available power output, and calculating the probability and/or the safety of a possible passing maneuver on the basis of the current position and driving route of the vehicle, and on the basis of the state of the drive train.

Description

description

Driver assistance system for overtaking

The invention relates to a driver assistance system for improving safety in overtaking operations.

Modern vehicles today have a variety of different assistance systems to increase driving safety or driving comfort or to reduce fuel consumption and emissions. Another common way the United ^¬ application of GPS-based navigation systems. An increasing networking of the infrastructure and a networking of individual mobile devices, eg smartphones via a backend server, make it possible to incorporate up-to-date information, for example about traffic disruptions. As a result, alternative route suggestions for congestion avoidance can be made or warnings can be transmitted to the drivers. This can help increase road safety. Other assistance systems can increase the safety of individual driving maneuvers. For such assistance systems, data stored in the vehicle "onboard", such as road maps, or data provided online by the infrastructure, or also data of a backend server via which various mobile devices are networked with one another, can be used.

For overtaking assistance systems are known which hel ^¬ fen to avoid collisions with other overtaking vehicles. This is done with appropriate technical means, especially an observation to the left behind (in right-hand traffic). A detection of oncoming traffic and other Vo ^¬ out settlements that are necessary for safe overtaking, does not yet exist. Against this background, the invention is based on the object to provide an assistance system with which the safety during overtaking can be further increased.

The object is achieved by a driver assistance system and a method according to the independent claims. Advantageous developments are specified in the dependent claims.

An inventive driver assistance system is used for automatic ^¬ tables recognition and evaluation of a possible overtake and comprises a track module to provide information about the currently traveled route, a Ortungsmo ^¬ dul, a drive train module for providing Informatio ^¬ NEN via the drive train, and a decision module for evaluation received from the route module, the locating module and the at ^¬ drive train module data and calculation of the probability and / or safety of a possible Überholma ^¬ Noevers.

The route module contains information about the current travel from driving ^¬ convincing track and makes it available for the decision module. The path module has at least one virtual card on which road courses are vomit ^¬ chert. The virtual card can be stored onboard or in the backend. Preferably, the stored map contains information about the lateral and vertical road, ie information about curves and down gradients of roads and preferably next to the road, example ^¬ as comparable to the content of a topographical map. Preferably also information about the number of lanes, or about a presence of a passing lane are stored. Preferably, on the map are also stored adjacent to the road adjacent or adjacent land classes, such as meadows, forest, fields, or buildings such as houses. This information is used to estimate the extent to which a traveled road section is suitable for an overtaking maneuver. For example, it can be determined on the basis of this information to what extent any counter traffic can be viewed by the driver or, if appropriate, a position that is much better suited for an overtaking maneuver is imminent.

The locating module includes, for example, a GPS receiver or a receiver of another (global or absolute) positioning system. This is mainly used to determine or derive the current position and direction of travel of the vehicle with respect to the virtual card.

The powertrain module consists for example of a central ^¬ eral engine control unit makes ^¬ which current data and, where relevant, data on the characteristics of the powertrain available. The current data of the drive ^¬ strand include, for example, the current vehicle speed, the selected gear, a current speed of the engine and / or the electric motor, a selected shift program "S" or "E" of an automatic transmission, current engine data, possibly the (current ) Antriebscha ^¬ characteristic (eg maximum retrievable torque (current), gear ratios (current), traction power during switching (in current operation)), and a battery state of charge. Ins ^¬ special driveline module is configured to deliver Informati ^¬ tions about a possible retrievable power to the decision-making module ^¬. As characteristics of the drive train or drive characteristics, in particular torque characteristics, acceleration profiles, in particular in Depending ^¬ ness an accelerator input or an operating parameter of the motor efficiency characteristic curves shift patterns and the like are ^¬ be distinguished. The decision module is, for example, a control unit and arranged to receive information from the other modules (ie, from the link module, the locating module from at ^¬ drive train module and any other participating modules) as well as to evaluate the information and calculate the safety and / or likelihood of a possible overtaking ,

According to a preferred development, the system also has a module for detecting the vehicle ahead. With this information about a preceding vehicle is detected. For this purpose, the module has to detect a vo ^¬ out-propelled vehicle, for example a camera, which is mounted onboard and can detect, for it is what type of vehicle (for example, tractor) and / or which dimen ^¬ solutions, the preceding vehicle has, for example, the width and / or length. Preferably, through the module for recognizing a preceding vehicle, information on the current driving performance, such as driving speed he ^¬ sums. Some of this information can also be obtained from the module via suitable on-board mounted sensors (eg distance sensors) which the module preferably possesses. Alternatively or additionally, this information can also be obtained from a back-end server if a preceding vehicle is connected to a back-end server. The module for detecting a preceding vehicle therefore preferably has a connection to the backend.

According to an advantageous development, the driver assistance system additionally includes an individual driver module. Information about the driving behavior of the driver is stored in this individual driver module. This information be ^¬ content such as data, which routes the driver when and where to run and at what speed. Preference ^¬ example, the information of the individual driver module linked to the information of the course module. The data of the individual driver module can be stored onboard or preferably permanently available on a backend server. On the basis of these data can be determined whether the driver is able to implement a possible speed driving technology, for example, under difficult conditions such as cornering. For this purpose, preferably speeds from all stored driving maneuvers of the respective driver are evaluated.

The object of the invention is also achieved by a method according to the invention for automatic recognition and estimation of a possible overtaking maneuver. The inventive method comprises the steps of: automatically detecting a current position and travel distance of the vehicle, acquiring information on the route, detecting a current state of the drive train, and calculating the plausibility ^{¬-effectiveness} and / or safety of a possible Überholmanö ^¬ vers based on the current Position and driving distance of the vehicle and on the basis of the state of the drive ^¬ strand.

The current position of the vehicle is detected by means of an OR ^¬ processing module such as a GPS sensor. Together ^¬ men with the track module, stored in the information on the road, the locating module is used to determine the ak ^¬ TULLE traveled route of the vehicle.

The information about the route includes, for example, the data comprising the route module described above. In particular, they contain a static or a dynamic map. The information is evaluated with regard to a possible overtaking maneuver. For example, in each case he ^¬ averages if the route traveled by the driver is sufficiently visible so that any obstacles on the road or oncoming traffic can be detected in good time. For this, the driving speed is preferably Untitled into account ^¬. The relevant information on the route includes, for example, the lateral and vertical route, ie curves or gradients, the number of lanes, the presence of a passing lane, but also adjacent to the road land classes, such as forest, field, meadow or land.

Additionally, the state of the drive train is polled, for example, with the aid of a drive train module and included in the Be ^¬ bill. The current speed are particularly relevant, the engaged gear and engine speed ^¬ or the battery state of charge. In addition, the data described above regarding the powertrain can be recorded. From this it can be deduced which acceleration performance and in particular which resulting profile would be retrievable for a possible overtaking procedure. Thus, the maneuverability of the vehicle can be predicted under the given conditions.

Preferably, the information for the route may also comprise Ge ^¬ schwindigkeitsdaten. For example, currently driven speeds can be available via a backend server. Individual vehicles may be connected to the backend server and provide this information constantly.

According to a preferred embodiment of the method according to the invention, information about a preceding vehicle is recognized and taken into account when calculating the probability and / or safety of a possible ^¬ holmanövers. The data can either be recorded onboard, for example via a camera mounted on the vehicle, or be related via the backend, if the driving ahead ^¬ tool is connected to the backend server.

According to a further preferred development, individual driver-related information is also captured and taken into account in the calculation of the probability and / or safety of a possible overtaking maneuver. This data can be stored in an individual driver module. The data includes, for example, information about driver driven distances and speeds as described above for the individual driver module.

Preferably, an at least required drive power is determined from the information about the route and the data to the drive train, which is necessary to perform an overtaking operation with a required differential speed and in particular a maximum overtaking to the vehicle in front. This minimum required to ^¬ drive power is preferably compared with the possible retrievable power of the powertrain.

In order to be able to call up the highest possible acceleration power, it is advantageous to automatically adapt the transmission shifting behavior for high acceleration powers if a high probability of an overtaking maneuver is calculated. This can be done, for example, if the calculated probability exceeds a threshold of, for example, 80% or 90%. For example, the transmission shifting behavior can be optimized for the best possible acceleration through independent Akti ^¬ fours of an "S" -Schaltprogramms without maneuvers harmful upshifts take place as in the "E" switch program for the duration of the overtaking. "E" can stand for an economical driving style. In addition, advantageously, an electrical energy store can be preconditioned automatically in order to make an available electric drive usable to the greatest extent possible if the calculated probability exceeds a threshold value. The goal here is to make available a possibly existing electric traction motor to the highest possible extent for the overtaking process.

In addition, it is advantageous to communicate the result of compute ^¬ th safety and / or likelihood of a possible overtaking maneuver on a user interface to the driver. This can be done for example via a display on the dashboard or by other light and / or sound signals. Also haptic detectable signals, for example via the accelerator pedal, shift lever or steering wheel are conceivable for this purpose.

In the following the invention will be further explained with reference to the drawing.

Figure 1 shows schematically the structure of a Ausführungsbei ^¬ game of a driver assistance system according to the invention.

The driver assistance module 10 has a route module 11, which contains a static or a dynamic map. Ei ^¬ ne dynamic map contains in addition to the information about the route and the passing landscape or adjacent to the road land classes information about the speeds traveled on the routes. A locating module 12 has a GPS receiver. Thus, the position and direction of travel of the vehicle can be determined with respect to the map.

The drive train module 13 provides information about the drive ^¬ strand ready to the decision module fourteenth The powertrain information includes engine data 16 and information to the battery state of charge 17. For this it is connected to a motor controller 16.

The decision module 14 is a control unit which receives ent ^¬ speaking signals from the individual modules, ie, for example, track module 11, locating module 12, powertrain module 13, Infor ^¬ mationsmodul on preceding vehicle 15 and individuel ^¬ les driver module 19, the data evaluates and processed ^¬ tet , From the received data, the decision ^module 14 determines a probability and / or a security for a possible overtaking maneuver. The result advantageously transmits the decision module to a user interface 18.

For a better evaluation of a possible overtaking an information module via a preceding vehicle driving ^¬ convincing 15 provides information about a preceding vehicle. The preceding vehicle information module 15 has a vehicle-mounted camera that can detect the length and width of the preceding vehicle. Preferably, the camera also recognizes what type of vehicle it is.

An individual driver module 19 transmits data to the decision module 14 via routes and speeds previously traveled by the respective driver. These may have been transmitted via a smartphone to a backend server, for example, and can be retrieved at any time.

All aspects of the invention described above may be used individually or in various combinations in the invention. Reference sign list

10: Driver assistance system

11: Route module

12: Location module

13: Powertrain module

14: Decision module

15: Information module about preceding vehicle

16: Engine data

17: Battery state of charge

18: user interface

19: Individual driver module

Claims

claims

1. driver assistance system (10) for automatically detecting and assessing a possible overtaking situation

comprising a track module (11) for providing in ^¬ formations on a currently traveled route,

a locating module (12)

a powertrain module (13) for providing information about a powertrain of the vehicle,

and a decision module (14) for evaluating from the route module (11), by the locating module (12) and the at ^¬ drive train module (13) received data and calculation of the probability and / or safety of a possible overtaking maneuver.

2. driver assistance system (10) according to one of the preceding claims, further comprising a module for detecting a vo ^¬ outgoing vehicle (15).

3. Driver assistance system according to one of the preceding claims, wherein the route module (11) contains a dynamic Kar ^¬ te, which information in addition to road information and current information about currently driven ^¬ speeds, preferably over past Ge ^¬ speeds, in particular the own vehicle and / or other vehicles.

4. Driver assistance system according to one of the preceding claims, which additionally comprises an individual driver module (16), which contains data about the driver driven Ge ^¬ speeds.

5. A method for automatically detecting and assessing a possible overtaking maneuver, comprising the steps of:

automatic detection of a current position of the vehicle Automatically detecting a current route of the vehicle and information about the route, detecting a current state of the powertrain, and calculating the probability and / or safety of a possible overtaking maneuver based on the aktuel ^¬ len position and distance of the vehicle and on

Based on the information about the route and the state of the drive train and in particular the charac ^¬ teristics of the drive train.

The method of claim 5, further comprising the steps of: acquiring information about a preceding vehicle and considering the information about the preceding vehicle when calculating the likelihood and / or safety of a possible overtaking maneuver.

A method according to any one of claims 5 and 6 with the wide ^¬ ren steps of: obtaining individual driver-related information and taking into account the individual driver-related information in the calculation of the probability and / or safety of a possible ^¬ holmanövers.

Method according to one of Claims 5 to 7, with the ^further step: comparing a drive power required for a safe overtaking operation with a possible retrievable power and / or comparing a drive energy required for a safe overtaking operation with a possible retrievable energy.

Method according to one of claims 5 to 8 with the ^further step, provided that the calculated probability for an overtaking maneuver exceeds a threshold value, automatically schematic of adjusting the transmission shifting behavior for high Be ^¬ schleunigungsleistungen.

10. The method according to any one of claims 5 to 9 when the calculated probability of an overtaking maneuver exceeds a threshold value with the wide ^¬ ren step preconditioned tioning To make ^¬ fang available an electrical energy accumulator to an electric drive of the vehicle as high as possible.

11. The method according to any one of claims 5 to 10, wherein the result of the calculated safety and / or probability of a possible overtaking maneuver via a Benut ^¬ zerinterface (18) is communicated to the driver.