WO2024121475A1

WO2024121475A1 - Method and device for activating a lane-keeping assist system of a vehicle

Info

Publication number: WO2024121475A1
Application number: PCT/FR2023/051757
Authority: WO
Inventors: Aref Antoine TAHHAN; Pierre Quinio; Stephane Feron; Chloe ALLEAU; Audrey Nielot
Original assignee: Stellantis Auto Sas
Priority date: 2022-12-09
Filing date: 2023-11-09
Publication date: 2024-06-13
Also published as: FR3142980A1

Abstract

The invention relates to a method for activating a lane-keeping assist system of a vehicle comprising a touch screen displaying a graphical interface, the graphical interface comprising a first graphical object displayed permanently, when the screen is turned on, and displaying at least the speed of the vehicle and a pictogram indicating an operating state of the lane-keeping assist system of the vehicle, the method comprising steps of: - detecting (41) a press on the pictogram, - in response to the detection (41) of the press on the pictogram: - activating (42) the lane-keeping assist system, - modifying (43) the appearance of the pictogram so as to signal that the lane-keeping assist system is activated.

Description

DESCRIPTION

Title: Method and device for activating a driving aid to keep a vehicle in a lane

The present invention claims the priority of French application 2213042 filed on 09.12.2022, the content of which (text, drawings and claims) is here incorporated by reference.

Technical area

[0001] The invention relates to the activation of a driving aid to maintain a vehicle in a lane.

Technology background

[0002] We know from document DE102010055132 an interface in particular for a driving assistance system. One of the disadvantages of such a solution is that it requires the addition of control buttons on the steering wheel to activate the driving aids. Adding buttons to a vehicle’s steering wheel is expensive. In addition, these buttons occupy a space that could be used for another interface controlling another function.

Summary of the invention

[0003] An object of the present invention is to propose a solution to the aforementioned drawbacks and, in particular, to facilitate access to the activation of assistance for driving a vehicle without increasing the number of buttons control.

[0004] For this purpose, the subject of the invention is a method of activating a driving aid for maintaining a vehicle in a lane comprising a touch screen displaying a graphical interface, said graphical interface comprising a first graphic object permanently displayed, when the screen is on, and displaying at least the speed of the vehicle and a pictogram indicating an operating state of the driving aid for maintaining the vehicle in a lane, said method comprising steps of:

- detection of pressing the pictogram, - in response to detection of pressing the pictogram:

- activation of driving assistance to keep you in a lane,

- modification of the appearance of the pictogram to indicate that driving assistance is activated.

[0005] The invention makes it possible to reduce the number of control buttons in a vehicle while maintaining direct access to the activation of a driving assistance function. In fact, by pressing the pictogram, the user can activate driving assistance. This activation of driving assistance is obtained without adding an additional graphic object to the interface and therefore without increasing the density of information on the graphic interface. Indeed, the invention makes it possible to transform a mandatory regulatory display, notably displaying the speed of the vehicle, into an intuitive control interface.

[0006] Advantageously, the method of activating a driving aid for maintaining a lane according to the invention 1 further comprises a step of detecting a second press on the pictogram and in response to the detection of pressing the pictogram:

- deactivation of lane-keeping driving assistance,

- modification of the appearance of the pictogram to indicate that driving assistance is deactivated.

[0007] Advantageously, the modification of the appearance of the pictogram comprises at least one of the following elements: a change in light intensity, a change in color and/or a change in transparency.

[0008] The invention also relates to a computer program comprising instructions which, when the program is executed by a computer, lead it to implement the method according to the invention.

[0009] The invention also relates to a device for assisting the energy recharging of a vehicle, said device comprising a memory associated with at least one processor configured for implementing the steps of the method according to the invention.

[00010] The invention also relates to a vehicle comprising a central screen and a device according to the invention. Brief description of the figures

[00011] Other characteristics and advantages of the invention will emerge from the description of the non-limiting embodiments of the invention below, with reference to the appended figures, in which:

[00012] [Fig. 1] schematically illustrates a passenger compartment of a vehicle, according to a particular embodiment of the present invention;

[00013] [Fig. 2] schematically illustrates a device for assisting the energy recharging of a vehicle according to a particular embodiment of the present invention;

[00014] [Fig. 3] illustrates a first example of a man-machine interface according to the invention.

[00015] [Fig. 4] schematically illustrates a method of assisting the energy recharging of a vehicle, according to a particular embodiment of the present invention;

[00016] [Fig. 5] illustrates a second example of a man-machine interface according to the invention.

[00017] Figure 1 shows a vehicle passenger compartment and in particular a dashboard 13. The dashboard comprises 13, on the driver's side, which is in the example shown on the left side of the vehicle, a steering wheel 12.

[00018] The dashboard includes, in a central part, a screen 11. 11 is a touch screen.

[00019] The device according to the invention makes it possible to activate driving assistance to keep a vehicle in a lane. It is in particular configured to control the display on the screen 11 and, in particular to control the display of a plurality of graphic data display objects called “widgets” on the screen 11.

[00020] In this example, screen 11 displays:

- A first graphic object 31 displaying information, called regulatory information, such as a speed of movement of the vehicle, a speed limit value for the speed limiter, a speed limit detected on the road segment traveled by the vehicle, and

- A second graphic object 32 displaying guidance information.

[00021] The first graphic object 31 permanently displayed, when the screen 11 is lit, and the vehicle is in a driving phase (in other words the vehicle is moving). The first graphic object 31 displaying at least the speed of the vehicle, a pictogram 31.1 indicating an operating state of the driving aid for maintaining the vehicle in a lane. In this example, pictogram 31.1 is represented by outlines. This is the pictogram displayed when driving assistance is deactivated.

[00022] The first graphic object 31 further displays a second gauge 31.2 relating to a fuel level in a tank of the vehicle.

The second graphic object 32 is displayed ephemerally, in other words, it can be replaced by another graphic object or covered by a so-called pop-up window.

[00024] With reference to Figure 4, the method according to the invention comprises the following steps.

[00025] In a first step, the device detects 41 a first press on the pictogram 31.1 indicating an operating state of the driving aid for maintaining the vehicle in a lane.

[00026] In response to the detection 41, the device controls, in a second step, the activation 42 of the driving assistance to maintain in a traffic lane; and in a third step, a modification 43 of the appearance of the pictogram so as to indicate that the driving assistance is activated.

[00027] Advantageously, the modification 43 of the appearance of the pictogram comprises at least one of the following elements: a change in light intensity, a change in color and/or a change in transparency.

[00028] In a fourth step, the device detects 44 a second press on the pictogram 31.1 indicating an operating state of the driving aid for maintaining the vehicle in a lane.

[00029] In response to detection 44, the device, in a fourth step, controls 45 the deactivation of the driving aid for maintaining a lane. traffic ; and in a third step, a modification 43 of the appearance of the pictogram so as to indicate that the driving assistance is deactivated.

[00030] Figure 5 shows a second example of a display of a plurality of graphic objects on the screen 11. This second example is similar to the first but it shows the pictogram 31.1 indicating an operating state of the Driving assistance to keep the vehicle in a lane, when driving assistance is deactivated. In this example, pictogram 31.1 is represented using solid lines and shapes colored in black.

[00031] [Fig. 2] schematically illustrates a device 2 for activating a driving aid for maintaining a vehicle in a lane, according to a particular and non-limiting embodiment of the present invention. Device 2 corresponds for example to a device on board the vehicle, for example a computer.

[00032] The device 2 is for example configured for implementing the steps of the method described with reference to FIG. 4. Examples of such a device 2 include, without being limited to, on-board electronic equipment such as a on-board computer of a vehicle, an electronic computer such as an ECU (“Electronic Control Unit”), a smartphone, a tablet, a laptop. The elements of device 2, individually or in combination, can be integrated into a single integrated circuit, into several integrated circuits, and/or into discrete components. Device 2 can be produced in the form of electronic circuits or software (or computer) modules or even a combination of electronic circuits and software modules.

[00033] The device 2 comprises one (or more) processor(s) 20 configured to execute instructions for carrying out the steps of the method and/or for executing the instructions of the software(s) embedded in the device 2. The processor 20 may include integrated memory, an input/output interface, and various circuits known to those skilled in the art. The device 2 further comprises at least one memory 21 corresponding for example to a volatile and/or non-volatile memory and/or comprises a memory storage device which may comprise volatile and/or non-volatile memory, such as EEPROM, ROM, PROM, RAM, DRAM, SRAM, flash, magnetic or optical disk.

[00034] The computer code of the embedded software(s) comprising the instructions to be loaded and executed by the processor is for example stored on memory 21.

[00035] According to different particular and non-limiting examples of embodiment, the device 2 is coupled in communication with other similar devices or systems and/or with communication devices, for example a TCU (from the English "Telematic Control Unit"). » or in French “Telematic Control Unit”), for example via a communications bus or through dedicated input/output ports.

[00036] According to a particular and non-limiting embodiment, the device 2 comprises a block 22 of interface elements for communicating with external devices, for example a remote server or the "cloud", other nodes of the network ad hoc. The interface elements of block 22 include one or more of the following interfaces:

[00037] - RF radio frequency interface, for example of the Wi-Fi® type (according to IEEE

802.11), for example in the 2.4 or 5 GHz frequency bands, or Bluetooth® type (according to IEEE 802.15.1), in the 2.4 GHz frequency band, or Sigfox type using radio technology UBN (from English Ultra Narrow Band, in French band ultra narrow), or LoRa in the 868 MHz frequency band, LTE (from English “Long-Term Evolution” or in French “Evolution à long term”), LTE-Advanced (or in French LTE-advanced);

[00038] - USB interface (from the English “Universal Serial Bus” or “Bus Universel en Série” in French);

[00039] - HDMI interface (from the English “High Definition Multimedia Interface”, or

“High Definition Multimedia Interface” in French);

[00040] - LIN interface (from the English “Local Interconnect Network”, or in French

“Local Interconnected Network”).

[00041] Data, such as for example a signal indicating an energy level of a reservoir, are for example loaded to the device 2 via the interface of block 22 using a Wi-Fi® network such as according to IEEE 802.11, an ITS G5 network based on IEEE 802.11 p or a mobile network such as a 4G (or 5G) network based on the LTE standard (from English Long Term Evolution) defined by the 3GPP consortium in particular an LTE-V2X network.

[00042] According to another particular and non-limiting example of embodiment, the device 2 comprises a communication interface 23 which makes it possible to establish communication with other devices (such as other computers of the on-board system) via a communication channel. communication 24. The communication interface 23 corresponds for example to a transmitter configured to transmit and receive information and/or data via the communication channel 24 such as a carrier signal indicating the activation state or not of the Driving assistance to keep the vehicle in a lane. The communication interface 23 corresponds for example to a wired network of the CAN type (from the English “Controller Area Network” or in French “Réseau de controllers”), CAN FD (from the English “Controller Area Network Flexible Data- Rate” or in French “Flexible data rate controller network”), FlexRay (standardized by ISO 17458) or Ethernet (standardized by ISO/IEC 802-3).

[00043] According to a particular and non-limiting embodiment, the device 2 can provide output signals to one or more external devices, such as a display screen 25, touch or not, one or more speakers 26 and/or other peripherals 27 (contact sensor) via output interfaces 28, 29 and 30 respectively. According to a variant, one or the other of the external devices is integrated into the device 2.

Claims

1. Method for activating a driving aid for maintaining a lane of a vehicle comprising a touch screen (11) displaying a graphical interface, said graphical interface comprising a first graphic object (31) permanently displayed, when the screen (11) is on, and displays at least the speed of the vehicle and a pictogram (31.1) indicating an operating state of the driving aid for maintaining the vehicle in a lane, said method comprising steps of :

- detection (41) of pressing the pictogram (31.1),

- in response to the detection (41) of pressing the pictogram (31.1):

- activation (42) of the driving aid to keep you in a lane,

- modification (43) of the appearance of the pictogram so as to indicate that driving assistance is activated.

2. Method for activating a driving aid for maintaining a lane according to claim 1, further comprising a step of detecting (44) a second press on the pictogram (31.1) and in response to the detection (44) of pressing the pictogram (31.1):

- deactivation (45) of the driving assistance to keep you in a lane,

- modification (46) of the appearance of the pictogram so as to indicate that driving assistance is deactivated.

3. Method for activating a lane-keeping driving aid according to one of the preceding claims, in which the modification (43) of the appearance of the pictogram comprises at least one of the following elements: a change in light intensity, a change in color and/or a change in transparency.

4. Computer program comprising instructions which, when the program is executed by a computer, lead it to implement the method according to one of the preceding claims.

5. Device for activating an aid for maintaining driving in a lane, said device (2) comprising a touch screen (11) and a memory (21) associated with at least one processor (20) configured to the implementation of the steps of the method according to any one of claims 1 to 3.

6. Vehicle comprising a device (2) according to the preceding claim.