Method and device for activating a driving aid for maintaining a vehicle in a lane

Abstract

The invention relates to a method for activating a lane keeping driving aid of a vehicle comprising a touch screen displaying a graphical interface, said graphical interface comprising a first graphical 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 lane keeping driving aid of the vehicle, said 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 driving aid, - modifying (43) the appearance of the pictogram so as to signal that the driving aid is activated. Figure for abstract: Figure 4

Description

Title of the invention: Method and device for activating a driving aid for maintaining a vehicle in a lane Technical field

[0001] The invention relates to the activation of a driving aid for maintaining a vehicle in a traffic lane. Technological background

[0002] Document DE 102010055132 discloses 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 the steering wheel of a vehicle is expensive. In addition, these buttons take up 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 a vehicle driving aid without increasing the number of control buttons.

[0004] For this purpose, the subject of the invention is a method for activating a lane keeping driving aid of a vehicle comprising a touch screen displaying a graphical interface, said graphical interface comprising a first graphical 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 lane keeping driving aid of the vehicle, said method comprising steps of: - detection of a press on the pictogram, - in response to the detection of pressing the pictogram: - activation of the lane keeping driving assistance, - 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 on a vehicle while maintaining direct access to the activation of a driving assistance function. Indeed, by pressing the pictogram, the user can activate a driving assistance function. This activation of the driving assistance is obtained without adding an additional graphic object in 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, displaying in particular the speed of the vehicle, into an interface of intuitive control.

[0006] Advantageously, the method for activating a lane-keeping driving aid according to the invention 1 further comprises 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 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, cause the latter to implement the method according to the invention.

[0009] The invention also relates to a device for assisting in recharging 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.

[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 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:

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

[0013] [Fig.2] schematically illustrates a device for assisting in recharging energy in a vehicle according to a particular exemplary 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 recharging a vehicle with energy, according to a particular exemplary embodiment of the present invention;

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

[0017] [Fig. 1] shows a vehicle interior and in particular a dashboard 13. The dashboard has 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 comprises, in a central part, a screen 11. This is a touch screen.

[0019] The device according to the invention allows the activation of a driving aid maintaining a vehicle in a traffic 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.

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

[0021] The first graphic object 31 is displayed permanently, when the screen 11 is on, and the vehicle is in a rolling phase (in other words the vehicle is moving). The first graphic object 31 displays at least the speed of the vehicle a pictogram 31.1 indicating an operating state of the driving assistance for maintaining the vehicle in a traffic lane. In this example, the pictogram 31.1 is represented by contours. This is the pictogram displayed when the driving assistance is deactivated.

[0022] The first graphical object 31 further 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 so-called pop-up window.

[0024] With reference to [Fig.4], the method according to the invention comprises the following steps.

[0025] In a first step, the device detects 41 a first press on the peak diagram 31.1 indicating an operating status of the vehicle's lane keeping driving assistance.

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

[0027] 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.

[0028] In a fourth step, the device detects 44 a second press on the pictogram 31.1 indicating an operating state of the driving assistance for maintaining the vehicle in a traffic lane.

[0029] In response to the detection 44, the device, in a fourth step, commands 45 the deactivation of the lane keeping driving assistance; 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] [Fig.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 for maintaining the vehicle in a lane, when the driving assistance is deactivated. In this example, the pictogram 31.1 is represented using solid lines and shapes colored in black.

[0031] [Fig.2] schematically illustrates a device 2 for activating a driving aid for maintaining a vehicle in a traffic lane, according to a particular and non-limiting exemplary embodiment of the present invention. The device 2 corresponds for example to a device on board the vehicle, for example a computer.

[0032] The device 2 is for example configured for implementing the steps of the method described with regard to [Fig.4]. Examples of such a device 2 include, but are not limited to, on-board electronic equipment such as an on-board computer of a vehicle, an electronic calculator such as an ECU (“Electronic Control Unit”), a smartphone, a tablet, a laptop. The elements of the device 2, individually or in combination, can be integrated into a single integrated circuit, into several integrated circuits, and / or into discrete components. The 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.

[0033] 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.

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

[0035] According to various particular and non-limiting embodiments, 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 communication bus or through input ports. / dedicated output.

[0036] According to a particular and non-limiting exemplary 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 ad hoc network. The interface elements of the block 22 comprise one or more of the following interfaces:

[0037] - RF radio frequency interface, for example of the Wi-Fi® type (according to IEEE 802.11), by 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 “Réseau local interconnected”).

[0041] Data, such as for example a signal indicating an energy level of a tank, are for example loaded to the device 2 via the interface of the block 22 using a Wi-Fi® network such as according to IEEE 802.11, an ITS G5 network based on IEEE 802.1 Ip or a mobile network such as a 4G (or 5G) network based on the LTE (Long Term Evolution) standard defined by the 3GPP consortium, in particular an LTE-V2X network.

[0042] According to another particular and non-limiting exemplary 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 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 state of activation or not of the lane keeping driving assistance of the vehicle.The communication interface 23 corresponds for example to a wired network of the CAN type (from the English “Controller Area Network” or in French “Network of controllers”), CAN FD (from the English “Controller Area Network Flexible Data-Rate” or in French “Flexible data rate controller network”), 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 exemplary embodiment, the device 2 can provide output signals to one or more external devices, such as a display screen 25, touch-sensitive 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 other of the external devices is integrated into the device 2.

Claims

Claims

1. Method for activating a lane keeping driving aid of 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 of the vehicle, said method comprising steps of: - detecting (41) a press on the pictogram (31.1), - in response to the detection (41) of the press on the pictogram (31.1): - activating (42) the lane keeping driving aid, - modifying (43) the appearance of the pictogram so as to signal that the driving aid 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 aid, - modification (46) of the appearance of the pictogram so as to signal that the driving aid 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. A 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 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 screen (11) and a device (2) according to the preceding claim.

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