WO2015071035A1 - Method for operating a display when switching a motor vehicle from an automatic into a manual drive mode, driver assistance device and motor vehicle - Google Patents

Method for operating a display when switching a motor vehicle from an automatic into a manual drive mode, driver assistance device and motor vehicle Download PDF

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Publication number
WO2015071035A1
WO2015071035A1 PCT/EP2014/071916 EP2014071916W WO2015071035A1 WO 2015071035 A1 WO2015071035 A1 WO 2015071035A1 EP 2014071916 W EP2014071916 W EP 2014071916W WO 2015071035 A1 WO2015071035 A1 WO 2015071035A1
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WO
WIPO (PCT)
Prior art keywords
motor vehicle
presentation
drive mode
display
driver
Prior art date
Application number
PCT/EP2014/071916
Other languages
French (fr)
Inventor
Siav Kuong Kuoch
Original Assignee
Valeo Schalter Und Sensoren Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Schalter Und Sensoren Gmbh filed Critical Valeo Schalter Und Sensoren Gmbh
Publication of WO2015071035A1 publication Critical patent/WO2015071035A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/22—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle, or by means of contactless obstacle detectors mounted on the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/23—Head-up displays [HUD]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/29—Instruments characterised by the way in which information is handled, e.g. showing information on plural displays or prioritising information according to driving conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/082—Selecting or switching between different modes of propelling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W60/00—Drive control systems specially adapted for autonomous road vehicles
    • B60W60/005—Handover processes
    • B60W60/0053—Handover processes from vehicle to occupant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/16—Type of output information
    • B60K2360/175—Autonomous driving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/18—Information management
    • B60K2360/195—Blocking or enabling display functions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B60W2050/146—Display means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/18—Steering angle

Definitions

  • the invention relates to a method for operating a display of a motor vehicle when switching the motor vehicle from an automatic drive mode into a manual drive mode.
  • control signals are output at least to a steering device by means of a driver assistance device of the motor vehicle, and hereby, a steering angle of the motor vehicle is autonomously controlled by the driver assistance device.
  • the steering angle is manually controlled by a driver by operating a steering wheel of the motor vehicle.
  • the invention relates to a driver assistance device for performing such a method as well as to a motor vehicle with such a driver assistance device.
  • Driver assistance devices for automatically driving a motor vehicle are already known from the prior art. Therein, it is basically differentiated between fully automatic driver assistance devices on the one hand and semi-automatic driver assistance devices on the other hand.
  • Semi-automatic driver assistance devices only assume the transverse guidance of the motor vehicle by automatically controlling the steering angle of the motor vehicle by means of the driver assistance device.
  • fully automatic driver assistance devices additionally control the drive train of the motor vehicle and thus also assume the longitudinal guidance of the motor vehicle, i.e. the acceleration and the deceleration.
  • the interest is directed to an at least semi-autonomous driver assistance device, which outputs control signals at least to a steering device of the motor vehicle in the automatic drive mode in order to automatically control the steering angle.
  • the driver assistance device can also be a fully automatic device, which additionally outputs corresponding control signals to a drive train of the motor vehicle. Therefore, the term "autonomous” can presently include both "semi-autonomous" and "fully automatic”.
  • automatic parking assistance systems which assist the driver in parking the motor vehicle.
  • These driver assistance systems usually calculate a parking trajectory, along which the motor vehicle can be parked into a previously detected parking space without collision.
  • the driver assistance device then autonomously controls the motor vehicle into the parking space according to the pre- calculated parking trajectory.
  • systems are also known, which serve for automatically driving the motor vehicle in preset road situations or driving situations. For example, it is already prior art to automatically drive a motor vehicle in a congestion or else in a so-called convoy travel.
  • Such driver assistance devices overall pursue a common aim of providing the possibility to the driver of the automobile of relaxing during travel and for example using diverse multimedia systems.
  • the driver himself can also assume the control over his vehicle anytime, as it is for example described in the documents US 2010/0228417, DE 10 2011 013 023 A1 as well as US 2012 089 294.
  • These printed matters propose various methods, how the driver can again assume the control over his vehicle.
  • the steering wheel has to be operated by the driver.
  • a motor vehicle is automatically driven by means of a driver assistance device, thus, it is required in certain events to pass the control over the vehicle again to the driver. This is for example required if a risk of collision is detected or else if the environmental conditions fast change and for example rain is detected.
  • the communication between the driver assistance device and the driver has proven problematic in such situations. If the control over the vehicle is again to be passed to the driver, this is to be correspondingly signaled to the driver, namely such that the driver is able to particularly fast and reliably conceive or appreciate the intent of the driver assistance device to surrender the control over the motor vehicle.
  • a head-up display of the motor vehicle can be switched into an infotainment mode or entertainment mode, in which a presentation is projected onto the windscreen, which includes infotainment data.
  • the windscreen becomes a display area, onto which very different infotainment information can be projected, which otherwise is not allowed to be projected upon manually driving the motor vehicle.
  • This infotainment data can for example be a browser window, in which email messages or else Internet sites are displayed.
  • the projected presentation can also be multimedia data such as for example videos, images, text data and the like. If the motor vehicle is again switched from the automatic drive mode into the manual drive mode, thus, this presentation has to be deactivated, and the head-up display is switched into a normal mode, in which either no information or else only drive-related information is projected onto the windscreen, such as for example navigation indications or the like,
  • a method for operating a head-up display is for example known from the printed matter
  • a display system for a motor vehicle is additionally known from the document
  • This system includes a display disposed in the instrument cluster as well as a head-up display. If it is detected that the driver views the display in the instrument cluster longer than a preset period of time, thus, the display in the instrument cluster is deactivated and the same content is projected onto the windscreen by means of the head-up display.
  • Methods for operating a head-up display are additionally known from the documents DE 10 2010 038 454 A1 as well as JP 2009 057 013 A.
  • the head-up display is operated in the infotainment mode in the automatic drive mode of the motor vehicle and the infotainment presentation is projected onto the windscreen, thus, the driver usually focuses on this projected presentation. The eyes of the driver are focused on the windscreen.
  • the infotainment presentation is deactivated and the heat-up display is switched from the infotainment mode into the normal mode. Therein, the presented content is changed because only drive information is allowed to be projected onto the windscreen in the manual drive mode.
  • This object is solved by a method, by a driver assistance device as well as by a motor vehicle having the features according to the respective independent claims.
  • a method according to the invention serves for operating a display of a motor vehicle when switching the motor vehicle from an automatic drive mode into a manual drive mode.
  • the motor vehicle In the automatic drive mode, the motor vehicle is at least semi-autonomously controlled by means of a driver assistance device, which outputs control signals at least to a steering device and hereby controls a steering angle of the motor vehicle.
  • the manual drive mode the motor vehicle is completely manually controlled by the driver.
  • a presentation is displayed on a windscreen of the motor vehicle by means of the display.
  • this presentation is deactivated. According to the invention, it is provided that before deactivating this presentation, this presentation is changed such that perceptibility of the displayed presentation is reduced compared to the original or normal presentation.
  • the perceptibility of the presentation can for exampte be reduced by applying a photographic or visual effect to the presentation.
  • a photographic effect By such a photographic effect, the presentation can be affected such that the eyes of the driver are again refocused on the road.
  • such an effect can be activated without much effort and in particularly fast manner.
  • the change of the displayed presentation includes that the presentation is displayed blurry on the windscreen for a preset time interval.
  • the reduction of the perceptibility is thus achieved by optical blur of the displayed presentation in this embodiment, thereby stimulating the eyes of the driver to the effect that his focus is again directed to the road.
  • the display When switching the motor vehicle from the automatic drive mode into the manual drive mode, the display is preferably switched from an infotainment mode into a normal mode. While the above mentioned presentation is displayed on the windscreen in the
  • infotainment mode at best only driving information is displayed in the normal mode, which relates to the current driving situation and assist the driver in driving the motor vehicle.
  • the presentation displayed in the infotainment mode can for example include multimedia data such as for example text data and/or video data and/or image data, thus overall data, which can entertain and/or inform the driver.
  • navigation indications can be displayed for the driver. It can also be provided that information is temporarily not displayed at all by means of the display in the normal mode.
  • a transition mode is activated, in which it is checked by means of the driver assistance device whether or not the driver operates the steering wheel. The change of the presentation and thus the reduction of the perceptibility of the presentation can then be performed in this transition mode. If operation of the steering wheel is detected, the manual drive mode is activated. However, if operation of the steering wheel is not detected, thus, the driver assistance device can continue to automatically drive the motor vehicle. Especially in such a transition mode, it is particularly important to be able to direct the attention of the driver again to the control of the motor vehicle and his eyes again to the road as fast as possible.
  • the activation of the transition mode is preferably effected autonomously by means of a control device of the driver assistance device.
  • the activation of the transition mode can be effected for example depending on a degree of risk, which is determined by means of the control device depending on sensor data of a sensor device of the motor vehicle.
  • the transition mode can also be activated if a preset time since activation of the automatic drive mode has elapsed.
  • the transition mode can be activated if preset environmental conditions are detected such as for example rain or the like.
  • a head-up display or else a transparent display disposed on the windscreen is employed as the display.
  • a projector is understood by a head-up display, by means of which a presentation can be projected onto the windscreen of the motor vehicle.
  • a transparent display can be disposed directly on the windscreen and allows the display of a transparent presentation, through which the driver can also view the road.
  • the invention relates to a driver assistance device, which is formed for performing a method according to the invention.
  • a motor vehicle according to the invention includes a driver assistance device according to the invention.
  • FIG. 1 in schematic illustration a motor vehicle according to an embodiment of the invention
  • Fig. 2A to 2C each a front region of an interior of the motor vehicle, wherein a method according to a first embodiment of the invention is explained in more detail;
  • FIG. 3A to 3C each the front region of the interior, wherein a method according to a second embodiment of the invention is explained in more detail
  • a motor vehicle 1 illustrated in Fig. 1 is for example a passenger car.
  • the motor vehicle 1 includes a driver assistance device 2, which is formed for at least semi-automatically driving the motor vehicle 1.
  • the driver assistance device 2 includes a control device 3 coupled to a display 4 and controlling it.
  • the control device 3 is coupled to a steering device 5 and can output control signals 6 to the steering device 5 in order to control the steering angle of the motor vehicle 1.
  • a steering wheel is connected to the steering device 5 as it is schematically indicated in Fig. 1.
  • control device 3 can also output corresponding control signals 8 to a drive train 9 of the motor vehicle 1 in order to also control the longitudinal guidance of the motor vehicle 1.
  • control signals 8 By outputting the control signals 8 to the drive train 9, the motor vehicle 1 can be automatically accelerated and decelerated.
  • control device 3 receives sensor data from a sensor device 10, which may include a plurality of sensors.
  • the sensor device 10 can for example include
  • the sensor device 10 can also include sensors, which serve for detecting current environmental conditions in the environment of the motor vehicle 1. For example, it can be a rain sensor.
  • the driver assistance device 2 can be switched into an automatic drive mode such that an autopilot is virtually activated.
  • the control device 3 controls at least the steering angle and thus the transverse guidance of the motor vehicle 1.
  • This automatic drive mode can also be again deactivated autonomously and thus
  • a preset criterion can for example include that based on the sensor data a great degree of risk with respect to a collision with an obstacle and/or rain is detected and/or a preset period of time since activation of the automatic drive mode has elapsed.
  • a transition mode is activated, in which the control over the vehicle drive is to be passed to the driver.
  • the control device 3 examines whether or not the driver operates the steering wheel 7 and thus assumes the control over the motor vehicle 1 , For this purpose, it can for example be examined if the steering wheel 7 is turned by the driver himself.
  • touch sensors can also be disposed on the steering wheel 7, which are able to detect a touch of the steering wheel 7.
  • the display 4 is for example a head-up display or else a transparent display, which is disposed on a windscreen of the motor vehicle 1. If a head-up display is employed, thus, it can project very different information onto the windscreen. In the embodiment, it is assumed that the display 4 is a head-up display, wherein the invention is not restricted to the employment of a head-up display.
  • the motor vehicle 1 has a windscreen 11 , only an area of which is depicted in Fig. 2A to 2C.
  • Another vehicle 12 is in front of the motor vehicle 1 , which travels on the same road as the motor vehicle 1.
  • the head-up display 4 can be disposed on a dashboard 14 of the motor vehicle 1.
  • the display 4 In the automatic drive mode, if the motor vehicle 1 is semi-autonomously or fully automatically controlled by means of the driver assistance device 2, the display 4 is switched into an infotainment mode, in which a presentation 15 is projected onto the windscreen 11.
  • the presentation 15 can for example include infotainment data and multimedia data, respectively, by which the driver is entertained during the automatic drive.
  • the infotainment mode is illustrated in Fig. 2A. if the driver assistance device 2 is switched again into the manual drive mode by the control device 3, thus, the presentation 15 is deactivated and the display 4 is switched into a normal mode, in which only driving information 16 is projected onto the windscreen 11, which may for example include navigation indications. This normal mode is illustrated in Fig. 2C.
  • a transition mode is activated, in which it is examined if the driver assumes the control over the motor vehicle 1.
  • the infotainment presentation 15 on the windscreen 11 is changed such that perceptibility of this presentation 15 is reduced.
  • the presentation 15 is projected onto the windscreen 11 in blurred and thus fuzzy or obscure manner, as it is schematically indicated in Fig. 2B.
  • the driver focuses his eyes on the presentation 15, which is indicated in Fig. 2A by the blurred represented further vehicle 12.
  • the presentation 15 is blurred displayed in the transition mode according to Fig. 2B, thus, the eyes of the driver are again refocused on the road occurrence and thus on the further vehicle 12.
  • the attention of the driver is very fast directed to the road situation and the driver very fast focuses his eyes on the further vehicle 12 as it is illustrated in Fig. 2C.
  • the reduction of the perceptibility of the presentation 15 can be performed for a relatively short period of time, such as in particular for a few seconds.
  • presentation 15 is reduced in the transition mode according to Fig. 3B in that the presentation 15 on the windscreen 11 is downsized, for example also continuously downsized.
  • “zooming out” of the presentation 15 is effected such that the driver is forced to again refocus his eyes on the further vehicle 12.
  • a combination of the blur of the presentation 15 with the downsizing of this presentation 15 can also be realized. Then, this additionally reduces the reaction time of the driver.
  • a photographic or visual effect can be applied to the presentation 15 in order to reduce the visual perceptibility of the presentation 15.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Human Computer Interaction (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Instrument Panels (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

The invention relates to a method for operating a display (4) of a motor vehicle (1) when switching the motor vehicle (1) from an autonomous drive mode, in which control signals are output at least to a steering device of the motor vehicle (1) by means of a driver assistance device of the motor vehicle (1) and hereby a steering angle of the motor vehicle (1) is autonomously controlled by the driver assistance device, into a manual drive mode, in which the steering angle is manually controlled by a driver by operating a steering wheel (7) of the motor vehicle (1), wherein in the automatic drive mode a presentation (15) is displayed on a windscreen (11) of the motor vehicle (1) by means of the display (4), and when switching from the automatic drive mode into the manual drive mode, the presentation (15) is deactivated, wherein before deactivation of the presentation (15) when switching from the automatic drive mode into the manual drive mode, the presentation (15) is changed such that perceptibility of the displayed presentation (15) is reduced.

Description

Method for operating a display when switching a motor vehicle from an automatic into a manual drive mode, driver assistance device and motor vehicle
The invention relates to a method for operating a display of a motor vehicle when switching the motor vehicle from an automatic drive mode into a manual drive mode. In the automatic drive mode, control signals are output at least to a steering device by means of a driver assistance device of the motor vehicle, and hereby, a steering angle of the motor vehicle is autonomously controlled by the driver assistance device. In contrast, in the manual drive mode, the steering angle is manually controlled by a driver by operating a steering wheel of the motor vehicle. In the automatic drive mode, a
presentation is displayed on a windscreen of the motor vehicle by means of the display, and upon switching from the automatic into the manual drive mode, the presentation is deactivated. In addition, the invention relates to a driver assistance device for performing such a method as well as to a motor vehicle with such a driver assistance device.
Driver assistance devices for automatically driving a motor vehicle are already known from the prior art. Therein, it is basically differentiated between fully automatic driver assistance devices on the one hand and semi-automatic driver assistance devices on the other hand. Semi-automatic driver assistance devices only assume the transverse guidance of the motor vehicle by automatically controlling the steering angle of the motor vehicle by means of the driver assistance device. In contrast, fully automatic driver assistance devices additionally control the drive train of the motor vehicle and thus also assume the longitudinal guidance of the motor vehicle, i.e. the acceleration and the deceleration. Presently, the interest is directed to an at least semi-autonomous driver assistance device, which outputs control signals at least to a steering device of the motor vehicle in the automatic drive mode in order to automatically control the steering angle. The driver assistance device can also be a fully automatic device, which additionally outputs corresponding control signals to a drive train of the motor vehicle. Therefore, the term "autonomous" can presently include both "semi-autonomous" and "fully automatic".
In this context, for example, automatic parking assistance systems are known, which assist the driver in parking the motor vehicle. These driver assistance systems usually calculate a parking trajectory, along which the motor vehicle can be parked into a previously detected parking space without collision. The driver assistance device then autonomously controls the motor vehicle into the parking space according to the pre- calculated parking trajectory. In addition, systems are also known, which serve for automatically driving the motor vehicle in preset road situations or driving situations. For example, it is already prior art to automatically drive a motor vehicle in a congestion or else in a so-called convoy travel.
Such driver assistance devices overall pursue a common aim of providing the possibility to the driver of the automobile of relaxing during travel and for example using diverse multimedia systems. Therein, the driver himself can also assume the control over his vehicle anytime, as it is for example described in the documents US 2010/0228417, DE 10 2011 013 023 A1 as well as US 2012 089 294. These printed matters propose various methods, how the driver can again assume the control over his vehicle. Usually, therein, only the steering wheel has to be operated by the driver.
If a motor vehicle is automatically driven by means of a driver assistance device, thus, it is required in certain events to pass the control over the vehicle again to the driver. This is for example required if a risk of collision is detected or else if the environmental conditions fast change and for example rain is detected. However, the communication between the driver assistance device and the driver has proven problematic in such situations. If the control over the vehicle is again to be passed to the driver, this is to be correspondingly signaled to the driver, namely such that the driver is able to particularly fast and reliably conceive or appreciate the intent of the driver assistance device to surrender the control over the motor vehicle. This has proven difficult in the prior art in particular for the reason that the driver usually does not focus on the current road situation during automatic drive of the motor vehicle, but for instance on infotainment systems and the like. Thus, a particular challenge is in being able to direct the attention of the driver again to assumption of the control over his vehicle.
From the printed matter US 2011/0163863 A1 , a device is known, which detects whether or not the steering wheel of the motor vehicle is operated by the driver. If operation of the steering wheel by the driver is not detected during movement of the motor vehicle, thus, alarm signals are output.
If the motor vehicle is fully automatically or semi-autonomously controlled, thus, a head-up display of the motor vehicle can be switched into an infotainment mode or entertainment mode, in which a presentation is projected onto the windscreen, which includes infotainment data. Therein, the windscreen becomes a display area, onto which very different infotainment information can be projected, which otherwise is not allowed to be projected upon manually driving the motor vehicle. This infotainment data can for example be a browser window, in which email messages or else Internet sites are displayed.
However, the projected presentation can also be multimedia data such as for example videos, images, text data and the like. If the motor vehicle is again switched from the automatic drive mode into the manual drive mode, thus, this presentation has to be deactivated, and the head-up display is switched into a normal mode, in which either no information or else only drive-related information is projected onto the windscreen, such as for example navigation indications or the like,
A method for operating a head-up display is for example known from the printed matter
US 8 395 522 B2.
A display system for a motor vehicle is additionally known from the document
US 2013/0009759 A1. This system includes a display disposed in the instrument cluster as well as a head-up display. If it is detected that the driver views the display in the instrument cluster longer than a preset period of time, thus, the display in the instrument cluster is deactivated and the same content is projected onto the windscreen by means of the head-up display.
Methods for operating a head-up display are additionally known from the documents DE 10 2010 038 454 A1 as well as JP 2009 057 013 A.
If the head-up display is operated in the infotainment mode in the automatic drive mode of the motor vehicle and the infotainment presentation is projected onto the windscreen, thus, the driver usually focuses on this projected presentation. The eyes of the driver are focused on the windscreen. If the autopilot is then deactivated and the motor vehicle is again switched into the manual drive mode, thus, the infotainment presentation is deactivated and the heat-up display is switched from the infotainment mode into the normal mode. Therein, the presented content is changed because only drive information is allowed to be projected onto the windscreen in the manual drive mode. When switching from the automatic drive mode into the manual drive mode, it has proven
disadvantageous in the prior art that it can take a relatively long time for the driver again to refocus the eyes on the road and thus on the road occurrence. Correspondingly, it takes relatively long until the driver again assumes the control over his motor vehicle.
It is an object of the invention to demonstrate a solution, how in a method of the initially mentioned kind, the focus of the driver can be particularly fast again directed to the road upon switching from the automatic drive mode into the manual drive mode. This object is solved by a method, by a driver assistance device as well as by a motor vehicle having the features according to the respective independent claims.
Advantageous implementations of the invention are the subject matter of the dependent claims, of the description and of the figures.
A method according to the invention serves for operating a display of a motor vehicle when switching the motor vehicle from an automatic drive mode into a manual drive mode. In the automatic drive mode, the motor vehicle is at least semi-autonomously controlled by means of a driver assistance device, which outputs control signals at least to a steering device and hereby controls a steering angle of the motor vehicle. In contrast, in the manual drive mode, the motor vehicle is completely manually controlled by the driver. In the automatic drive mode, a presentation is displayed on a windscreen of the motor vehicle by means of the display. When switching from the automatic drive mode into the manual drive mode, this presentation is deactivated. According to the invention, it is provided that before deactivating this presentation, this presentation is changed such that perceptibility of the displayed presentation is reduced compared to the original or normal presentation.
By a short-time reduction of the visual perceptibility of the displayed presentation, the driver is instructed and induced to again refocus his eyes on the road occurrence. This results in the fact that the attention of the driver is particularly fast directed from the presentation on the windscreen again to the road such that the control over the motor vehicle can also be correspondingly fast again be assumed by the driver. Namely, by the reduction of the perceptibility of the presentation, the ability of the driver to optically perceive the displayed presentation is influenced. By the reduction of the perceptibility of the presentation, thus, reduction of the noticeability of the presentation by the driver is achieved.
The perceptibility of the presentation can for exampte be reduced by applying a photographic or visual effect to the presentation. By such a photographic effect, the presentation can be affected such that the eyes of the driver are again refocused on the road. In addition, such an effect can be activated without much effort and in particularly fast manner.
In an embodiment, it can be provided that the change of the displayed presentation includes that the presentation is displayed blurry on the windscreen for a preset time interval. The reduction of the perceptibility is thus achieved by optical blur of the displayed presentation in this embodiment, thereby stimulating the eyes of the driver to the effect that his focus is again directed to the road.
Additionally or alternatively, it can also be provided that upon change of the displayed presentation, it is downsized, in particular continuously downsized. This means that "zooming out" of the presentation is performed such that the presentation is consecutively smaller displayed on the windscreen. This too, changes the focus of the driver such that the driver particularly fast directs his view again to the road.
When switching the motor vehicle from the automatic drive mode into the manual drive mode, the display is preferably switched from an infotainment mode into a normal mode. While the above mentioned presentation is displayed on the windscreen in the
infotainment mode, at best only driving information is displayed in the normal mode, which relates to the current driving situation and assist the driver in driving the motor vehicle. The presentation displayed in the infotainment mode can for example include multimedia data such as for example text data and/or video data and/or image data, thus overall data, which can entertain and/or inform the driver. In contrast, in the normal mode, navigation indications can be displayed for the driver. It can also be provided that information is temporarily not displayed at all by means of the display in the normal mode.
When switching from the automatic drive mode into the manual drive mode, preferably, first, a transition mode is activated, in which it is checked by means of the driver assistance device whether or not the driver operates the steering wheel. The change of the presentation and thus the reduction of the perceptibility of the presentation can then be performed in this transition mode. If operation of the steering wheel is detected, the manual drive mode is activated. However, if operation of the steering wheel is not detected, thus, the driver assistance device can continue to automatically drive the motor vehicle. Especially in such a transition mode, it is particularly important to be able to direct the attention of the driver again to the control of the motor vehicle and his eyes again to the road as fast as possible.
Therein, the activation of the transition mode is preferably effected autonomously by means of a control device of the driver assistance device. Therein, the activation of the transition mode can be effected for example depending on a degree of risk, which is determined by means of the control device depending on sensor data of a sensor device of the motor vehicle. Additionally or alternatively, the transition mode can also be activated if a preset time since activation of the automatic drive mode has elapsed. Furthermore, additionally or alternatively, the transition mode can be activated if preset environmental conditions are detected such as for example rain or the like.
Preferably, a head-up display or else a transparent display disposed on the windscreen is employed as the display. Therein, a projector is understood by a head-up display, by means of which a presentation can be projected onto the windscreen of the motor vehicle. In contrast, a transparent display can be disposed directly on the windscreen and allows the display of a transparent presentation, through which the driver can also view the road.
In addition, the invention relates to a driver assistance device, which is formed for performing a method according to the invention.
A motor vehicle according to the invention includes a driver assistance device according to the invention.
The preferred embodiments presented with respect to the method according to the invention and the advantages thereof correspondingly apply to the driver assistance device according to the invention as well as to the motor vehicle according to the invention.
Further features of the invention are apparent from the claims, the figures and the description of figures. All of the features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of figures and/or shown in the figures alone are usable not only in the respectively specified combination, but also in other combinations or else alone.
Now, the invention is explained in more detail based on a preferred embodiment as well as with reference to the attached drawings.
There show:
Fig. 1 in schematic illustration a motor vehicle according to an embodiment of the invention; Fig. 2A to 2C each a front region of an interior of the motor vehicle, wherein a method according to a first embodiment of the invention is explained in more detail; and
Fig. 3A to 3C each the front region of the interior, wherein a method according to a second embodiment of the invention is explained in more detail
A motor vehicle 1 illustrated in Fig. 1 is for example a passenger car. The motor vehicle 1 includes a driver assistance device 2, which is formed for at least semi-automatically driving the motor vehicle 1. The driver assistance device 2 includes a control device 3 coupled to a display 4 and controlling it. In addition, the control device 3 is coupled to a steering device 5 and can output control signals 6 to the steering device 5 in order to control the steering angle of the motor vehicle 1. In addition, a steering wheel is connected to the steering device 5 as it is schematically indicated in Fig. 1.
Optionally, the control device 3 can also output corresponding control signals 8 to a drive train 9 of the motor vehicle 1 in order to also control the longitudinal guidance of the motor vehicle 1. By outputting the control signals 8 to the drive train 9, the motor vehicle 1 can be automatically accelerated and decelerated.
In addition, the control device 3 receives sensor data from a sensor device 10, which may include a plurality of sensors. The sensor device 10 can for example include
environmental sensors for detecting obstacles, such as for example ultrasonic sensors and/or radar sensors and/or optical sensors. Additionally or alternatively, the sensor device 10 can also include sensors, which serve for detecting current environmental conditions in the environment of the motor vehicle 1. For example, it can be a rain sensor.
The driver assistance device 2 can be switched into an automatic drive mode such that an autopilot is virtually activated. In this automatic drive mode, the control device 3 controls at least the steering angle and thus the transverse guidance of the motor vehicle 1. This automatic drive mode can also be again deactivated autonomously and thus
independently of the driver by means of the control device 3, if a preset criterion is satisfied. This criterion can for example include that based on the sensor data a great degree of risk with respect to a collision with an obstacle and/or rain is detected and/or a preset period of time since activation of the automatic drive mode has elapsed. However, before the automatic drive mode is deactivated and the manual drive mode is activated, a transition mode is activated, in which the control over the vehicle drive is to be passed to the driver. In this transition mode, the control device 3 examines whether or not the driver operates the steering wheel 7 and thus assumes the control over the motor vehicle 1 , For this purpose, it can for example be examined if the steering wheel 7 is turned by the driver himself. Additionally or alternatively, touch sensors can also be disposed on the steering wheel 7, which are able to detect a touch of the steering wheel 7.
The display 4 is for example a head-up display or else a transparent display, which is disposed on a windscreen of the motor vehicle 1. If a head-up display is employed, thus, it can project very different information onto the windscreen. In the embodiment, it is assumed that the display 4 is a head-up display, wherein the invention is not restricted to the employment of a head-up display.
With reference now to 2A to 2C, the motor vehicle 1 has a windscreen 11 , only an area of which is depicted in Fig. 2A to 2C. Another vehicle 12 is in front of the motor vehicle 1 , which travels on the same road as the motor vehicle 1. Between the windscreen 11 and the steering wheel 7, there is an instrument cluster 13 in a manner known per se.
For example, the head-up display 4 can be disposed on a dashboard 14 of the motor vehicle 1.
In the automatic drive mode, if the motor vehicle 1 is semi-autonomously or fully automatically controlled by means of the driver assistance device 2, the display 4 is switched into an infotainment mode, in which a presentation 15 is projected onto the windscreen 11. In the infotainment mode, the presentation 15 can for example include infotainment data and multimedia data, respectively, by which the driver is entertained during the automatic drive. The infotainment mode is illustrated in Fig. 2A. if the driver assistance device 2 is switched again into the manual drive mode by the control device 3, thus, the presentation 15 is deactivated and the display 4 is switched into a normal mode, in which only driving information 16 is projected onto the windscreen 11, which may for example include navigation indications. This normal mode is illustrated in Fig. 2C.
As already explained, upon switching the driver assistance device from the automatic drive mode into the manual drive mode, first, a transition mode is activated, in which it is examined if the driver assumes the control over the motor vehicle 1. In this transition mode illustrated in Fig. 2B, the infotainment presentation 15 on the windscreen 11 is changed such that perceptibility of this presentation 15 is reduced. In the embodiment according to Fig, 2B, the presentation 15 is projected onto the windscreen 11 in blurred and thus fuzzy or obscure manner, as it is schematically indicated in Fig. 2B.
!n the automatic drive mode and thus in the infotainment mode of the display 4, the driver focuses his eyes on the presentation 15, which is indicated in Fig. 2A by the blurred represented further vehicle 12. if the presentation 15 is blurred displayed in the transition mode according to Fig. 2B, thus, the eyes of the driver are again refocused on the road occurrence and thus on the further vehicle 12. Thus, the attention of the driver is very fast directed to the road situation and the driver very fast focuses his eyes on the further vehicle 12 as it is illustrated in Fig. 2C.
The reduction of the perceptibility of the presentation 15 can be performed for a relatively short period of time, such as in particular for a few seconds.
In. Fig. 3A to 3C, a further example is illustrated. Here, the perceptibility of the
presentation 15 is reduced in the transition mode according to Fig. 3B in that the presentation 15 on the windscreen 11 is downsized, for example also continuously downsized. Thus, "zooming out" of the presentation 15 is effected such that the driver is forced to again refocus his eyes on the further vehicle 12.
Optionally, a combination of the blur of the presentation 15 with the downsizing of this presentation 15 can also be realized. Then, this additionally reduces the reaction time of the driver.
Generally speaking, a photographic or visual effect can be applied to the presentation 15 in order to reduce the visual perceptibility of the presentation 15.

Claims

Claims
1. Method for operating a display (4) of a motor vehicle (1) when switching the motor vehicle (1) from an automatic drive mode, in which control signals (6, 8) are output at least to a steering device (5) of the motor vehicle (1) by means of a driver assistance device (2) of the motor vehicle (1) and hereby a steering angle of the motor vehicle (1) is autonomously controlled by the driver assistance device (2), into a manual drive mode, in which the steering angle is manually controlled by a driver by operating a steering wheel (7) of the motor vehicle (1), wherein in the automatic drive mode, a presentation (15) is displayed on a windscreen (11) of the motor vehicle (1) by means of the display (4), and the presentation (15) is deactivated when switching from the automatic drive mode into the manual drive mode, characterized in that
before deactivating the presentation (15) when switching from the automatic drive mode into the manual drive mode, the presentation (15) is changed such that a perceptibility of the displayed presentation (15) is reduced,
2. Method according to claim 1 ,
characterized in that
the perceptibility of the presentation (15) is reduced by means of a photographic effect, which is applied to the presentation (15),
3. Method according to claim 1 or 2,
characterized in that
the change of the displayed presentation (15) includes that the presentation (15) is displayed blurred on the windscreen (11) for a preset time interval.
4. Method according to any one of the preceding claims,
characterized in that
the change of the displayed presentation (15) includes that the presentation (15) is downsized, in particular continuously downsized.
5. Method according to any one of the preceding claims,
characterized in that with the switching the motor vehicle (1) from the automatic drive mode into the manual drive mode, the display (4) is switched from an infotainment mode, in which the presentation (15) is displayed on the windscreen (11), into a normal mode, in which driving information (16) is displayed on the windscreen (11) by means of the display (4).
6. Method according to any one of the preceding claims,
characterized in that
with the switching from the automatic drive mode into the manual drive mode, a transition mode is activated, in which it is checked by means of the driver assistance device (2) if the driver operates the steering wheel (7), wherein the change of the presentation (15) is performed in the transition mode.
7. Method according to claim 6,
characterized in that
the activation of the transition mode is autonomously performed by means of a control device (3) of the driver assistance device (2).
8. Method according to any one of the preceding claims,
characterized in that
a head-up display or a transparent display disposed on the windscreen (11) is used as the display (4).
9. Driver assistance device (2) for a motor vehicle (1) including a display (4) for
displaying information on a windscreen (11) of the motor vehicle (1), and including a control device (3) for controlling the display (4), wherein the driver assistance device (2) is switchable between an automatic drive mode and a manual drive mode and the control device (3) is adapted to output control signals (6, 8) at least to a steering device (5) of the motor vehicle (1) in the automatic drive mode and hereby to autonomously control a steering angle of the motor vehicle (1), wherein in the manual drive mode the steering angle is manually controllable by a driver by operating a steering wheel (7) of the motor vehicle (1), and wherein the control device (3) is adapted to control the display (4) for displaying a presentation (15) on the windscreen (11) in the automatic drive mode and to deactivate the presentation (15) when switching from the automatic drive mode into the manual drive mode, characterized in that
the control device (3) is adapted to change the presentation (15) when switching from the automatic drive mode into the manual drive mode before deactivating the presentation (15) such that perceptibility of the displayed presentation (15) is reduced.
10. Motor vehicle (1) with a driver assistance device (2) according to claim 9,
PCT/EP2014/071916 2013-11-12 2014-10-13 Method for operating a display when switching a motor vehicle from an automatic into a manual drive mode, driver assistance device and motor vehicle WO2015071035A1 (en)

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