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

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 lane-keeping assistance system for a vehicle The present invention claims priority from French application 2213042 filed on 09.12.2022, the content of which (text, drawings and claims) is incorporated herein by reference. technical field

[0001] The invention relates to the activation of a lane-keeping assistance system for a vehicle. Technological background

[0002] Document DE102010055132 describes an interface, notably for a driver assistance system. One drawback of such a solution is that it requires the addition of control buttons on the steering wheel to activate the driver assistance features. Adding buttons to a vehicle's steering wheel is expensive. Furthermore, these buttons occupy space that could be used for another interface controlling a different function. Summary of the invention

[0003] One object of the present invention is to offer a solution to the aforementioned disadvantages and, in particular, to facilitate access to the activation of a vehicle driving aid without increasing the number of control buttons.

[0004] To this end, the invention relates to a method for activating a lane-keeping assist system for a vehicle comprising a touchscreen displaying a graphical interface, said graphical interface comprising a first graphical object displayed continuously when the screen is on, and displaying at least the vehicle's speed and a pictogram indicating the operating status of the lane-keeping assist system, said method comprising the following steps: - detection of a press on the pictogram, - in response to the detection of the pictogram being pressed: - activation of the lane keeping assist system, - modification of the pictogram's appearance to indicate that the driving assistance system is activated.

[0005] The invention reduces the number of control buttons in a vehicle while maintaining direct access to activate a driver assistance function. By pressing the pictogram, the user can activate a driver assistance feature. This activation is achieved without adding any extra graphic elements to the interface, thus avoiding increasing the information density on the graphical interface. In effect, the invention transforms a mandatory regulatory display, such as the vehicle's speed, into an intuitive control interface.

[0006] Advantageously, the method for activating a lane-keeping driving aid according to invention 1 further includes a step of detecting a second press on the pictogram and, in response to the detection of a press on the pictogram: - deactivation of the lane keeping assist system, - modification of the pictogram's appearance to indicate that the driving assistance system is deactivated.

[0007] Advantageously, the modification of the pictogram's appearance includes at least one of the following: a change in brightness, 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 the computer to implement the process according to the invention.

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

[0010] The invention also relates to a vehicle comprising a central screen and a device according to the invention. Brief description of the figures

[0011] Other features and advantages of the invention will become apparent from the description of the non-limiting embodiments of the invention below, with reference to the accompanying figures, in which:

[0012] [Fig. 1] schematically illustrates a vehicle passenger compartment, according to a particular embodiment of the present invention;

[0013] [Fig. 2] schematically illustrates a vehicle energy recharging assistance device according to a particular embodiment of the present invention;

[0014] [Fig. 3] illustrates a first example of a human-machine interface according to the invention.

[0015] [Fig. 4] schematically illustrates a method for assisting in the energy recharging of a vehicle, according to a particular embodiment of the present invention;

[0016] [Fig. 5] illustrates a second example of a human-machine interface according to the invention.

[0017] Figure 1 shows a vehicle interior and in particular a dashboard 13. The dashboard includes 13, on the driver's side, which in the example shown is on the left side of the vehicle, a steering wheel 12.

[0018] The dashboard has an 11-inch screen in the center. 11 is a touchscreen.

[0019] The device according to the invention enables the activation of a lane-keeping assistance system for a vehicle. It is specifically configured to control the display on screen 11 and, in particular, to control the display of a plurality of graphic data display objects called "widgets" on screen 11.

[0020] In this example, screen 11 displays: - A first graphic object 31 displaying information, known as regulatory information, such as the vehicle's speed, a speed limit value for the speed limiter, and a speed limit detected on the road segment. traveled by the vehicle, and - A second graphic object 32 displaying guidance information.

[0021] The first graphic object 31 is displayed continuously when the screen 11 is on and the vehicle is in motion (i.e., the vehicle is moving). This first graphic object 31 displays at least the vehicle's speed and a pictogram 31.1 indicating the operating status of the lane-keeping assist system. In this example, pictogram 31.1 is represented by outlines. This is the pictogram displayed when the lane-keeping assist system is deactivated.

[0022] The first graphic object 31 also displays a second gauge 31.2 relating to a fuel level in a tank of the vehicle.

[0023] The second graphic object 32 is displayed ephemerally, in other words, it can be replaced by another graphic object or covered by a pop-up window.

[0024] With reference to figure 4, the process according to the invention comprises the following steps.

[0025] In a first step, the device detects 41 a first press on the pictogram 31.1 indicating an operating state of the lane keeping assistance of the vehicle.

[0026] In response to detection 41, the device commands, in a second step, the activation 42 of the lane keeping assist; and in a third step, a modification 43 of the appearance of the pictogram so as to indicate that the assist is activated.

[0027] Advantageously, modification 43 of the pictogram's appearance includes at least one of the following: a change in brightness, a change in colour and / or a change in transparency.

[0028] In a fourth step, the device detects a second press on pictogram 31.1 indicating an operating state of the lane keeping assistance system for the vehicle.

[0029] In response to detection 44, the device, in a fourth step, commands 45 the deactivation of the lane-keeping assist. 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.

[0030] Figure 5 shows a second example of displaying multiple graphic objects on screen 11. This second example is similar to the first, but it shows pictogram 31.1 indicating the operating state of the lane-keeping assist system when the assist is deactivated. In this example, pictogram 31.1 is represented using solid lines and black colored shapes.

[0031] [Fig. 2] schematically illustrates a device 2 for activating a lane-keeping assistance system for a vehicle, according to a particular and non-limiting embodiment of the present invention. Device 2 corresponds, for example, to a device installed in the vehicle, such as a computer.

[0032] Device 2 is, for example, configured to implement the steps of the process described opposite Figure 4. Examples of such a device 2 include, but are not limited to, embedded electronic equipment such as a vehicle's on-board computer, an electronic control unit such as an ECU (Electronic Control Unit), a smartphone, a tablet, or a laptop computer. 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 implemented as electronic circuits, software (or computer) modules, or a combination of electronic circuits and software modules.

[0033] Device 2 includes one (or more) processor(s) 20 configured to execute instructions for carrying out the steps of the process and / or for executing instructions from the software embedded in Device 2. The processor 20 may include integrated memory, an input / output interface, and various circuits known to those skilled in the art. Device 2 further includes at least one memory 21, corresponding, for example, to volatile and / or non-volatile memory, and / or includes a memory storage device which may include volatile and / or non-volatile memory, such as EEPROM, ROM, PROM, RAM, DRAM, SRAM, flash, magnetic or optical disk.

[0034] The computer code of the embedded software(s) including the instructions to be loaded and executed by the processor is, for example, stored on memory 21.

[0035] According to various specific and non-limiting embodiment examples, device 2 is coupled in communication with other similar devices or systems and / or with communication devices, for example a TCU (Telematic Control Unit), for example via a communication bus or through dedicated input / output ports.

[0036] According to a particular and non-limiting embodiment, device 2 includes a block 22 of interface elements for communicating with external devices, for example, a remote server or the cloud, other nodes of the ad hoc network. The interface elements of block 22 include one or more of the following interfaces:

[0037] - Radio frequency (RF) 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 UBN (Ultra Narrow Band) radio technology, or LoRa in the 868 MHz frequency band, LTE (Long-Term Evolution), LTE-Advanced;

[0038] - USB interface (from the English "Universal Serial Bus" or "Universal Serial Bus" in French);

[0039] - HDMI interface (from the English "High Definition Multimedia Interface", or "High Definition Multimedia Interface" in French);

[0040] - LIN interface (from the English "Local Interconnect Network", or in French "Local interconnected network").

[0041] Data, such as a signal indicating the energy level of a tank, is for example loaded into 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 (Long Term Evolution) standard defined by the 3GPP consortium, including an LTE-V2X network.

[0042] According to another particular and non-limiting embodiment, the device 2 includes a communication interface 23 which enables communication with other devices (such as other computers in the on-board system) via a communication channel 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 status of the lane-keeping assistance system for the vehicle.Communication interface 23 corresponds for example to a wired network of type CAN (from the English "Controller Area Network" or in French "Réseau de contrôlers"), CAN FD (from the English "Controller Area Network Flexible Data-Rate" or in French "Réseau de contrôlers à débit de données flexible"), FlexRay (standardized by the ISO 17458 standard) or Ethernet (standardized by the ISO / IEC 802-3 standard).

[0043] 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 non-touch, 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 more of the external devices is integrated into the device 2.

Claims

CLAIMS 1. Method for activating a lane keeping driving aid for a vehicle comprising a touch screen (11) displaying a graphical interface, said graphical interface comprising a first graphical object (31) permanently displayed, when the screen (11) is on, and displaying at least the speed of the vehicle and a pictogram (31.1) indicating an operating state of the lane keeping driving aid for the vehicle, said method comprising steps of: - detection (41) of a press on the pictogram (31.1), - in response to the detection (41) of pressing the pictogram (31.1): - activation (42) of the lane keeping driving assistance, - modification (43) of the appearance of the pictogram to indicate that driving assistance is activated.

2. Method for activating a lane keeping driving aid 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 a press on the pictogram (31.1): - deactivation (45) of the lane keeping driving assistance, - modification (46) of the appearance of the pictogram 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, cause the latter to implement the method according to one of the preceding claims.

5. Device for activating a driving aid for maintaining in a traffic lane, said device (2) comprising a touch screen (11) and a memory (21) associated with at least one processor (20) configured for implementing 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.

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