FR3145536A1 - Method and device for controlling an on-board system in a vehicle via indicator lights - Google Patents

Abstract

The present invention relates to a method and a device for controlling an on-board system in a vehicle (10). For this purpose, a signal indicator representative of the on-board system is displayed according to a first graphic representation in a determined content of a human-machine interface displayed on a touch screen (13). The first graphic representation is representative of a first activation state of the on-board system. Data representative of a touch press on the displayed signal indicator are received. A request to switch the on-board system from the first activation state to a second activation state is transmitted. The display of the signal indicator is controlled to display the signal indicator according to a second graphic representation in the determined content of the HMI displayed on the touch screen (13). This second graphic representation is representative of the second activation state of the on-board system. Figure for the abstract: Figure 1

Description

Method and device for controlling an on-board system in a vehicle via indicator lights

The invention relates to methods and devices for controlling an on-board system of a vehicle, in particular an automobile. The invention relates in particular to a method and a device for controlling the activation and deactivation of an on-board system in a vehicle. The invention also relates to a method and a device for assisting in driving a vehicle.

Technological background

Some contemporary vehicles have several screens to display information useful to the driver for driving the vehicle as well as comfort information, such as information for interacting with the vehicle's infotainment system, also called IVI (In-Vehicle Infotainment) system.

Among these screens, it is known to embed one or more LCD type screens (from the English “Liquid Crystal Display” or in French “Display à cristaux liquide”), for example of the TFT type (from the English “Thin-Film Transistor” or in French “Transistor en film mince”), or OLED type (from the English “Organic Light-Emitting Diode” or in French “Diode électroluminescente biologique”).

The integration of such screens associated with a touch interface makes it possible to control via this touch interface and the graphic Human-Machine Interface (HMI) displayed on such a screen one or more system(s) embedded in the vehicle, for example the air conditioning system, by navigating through menus and setting the value of certain parameters, for example from values proposed in drop-down menus or by entering the desired value in a field of the HMI provided for this purpose.

Control of some of these on-board systems is also enabled by one or more control levers and/or physical buttons provided around or on the steering wheel, or on the dashboard or a central console of the vehicle.

The multiplication of command or control means leads to a complexity of the HMI by which a user interacts with the on-board systems to control them, with in particular a multiplication of icons or command shortcuts whose control and management are consequently complicated for a user. The user experience is degraded and the attention of the driver of the vehicle may be reduced when the driver navigates through the different menus of the HMI or looks for the control levers to execute the function(s) that he wishes to activate at the level of the on-board systems, for example the driver assistance systems, known as ADAS systems (from the English “Advanced Driver-Assistance System” or in French “Système d’aide à la conduite supérieur”) or any system or organ embedded in the vehicle ensuring the operation of the vehicle or making it possible to supervise the operation of the vehicle.

Furthermore, the multiplication of display devices in a vehicle as well as the multiplication of means of controlling on-board systems increases the price of these vehicles and complicates access to information for the driver and/or passengers of the vehicle, which can also degrade the user experience.

Summary of the present invention

An object of the present invention is to solve at least one of the problems of the technological background described above.

Another object of the present invention is, for example, to improve the control of one or more systems embedded in a vehicle, in particular an automobile.

Another object of the present invention is, for example, to improve the user experience with regard to the control of these driving assistance systems.

Another object of the present invention is, for example, to improve safety in a vehicle.

According to a first aspect, the present invention relates to a method for controlling an on-board system in a vehicle, the vehicle having a display system comprising a touch screen, the method comprising the following steps:
- display control of a signaling indicator representing the on-board system, according to a first graphic representation, in a determined content of a human-machine interface, called HMI, displayed on the touch screen, the first graphic representation of the signaling indicator being representative of a first activation state of the on-board system;
- reception of data representative of a tactile press on the indicator light;
- transmitting a request to switch the embedded system from the first activation state to a second activation state;
- display control of the indicator light, according to a second graphic representation, in the determined content of the HMI displayed on the touch screen, the second graphic representation being representative of the second activation state of the on-board system.

The direct use of the indicator light representative of an on-board system for the control of this same on-board system, that is to say to make it pass from a first activation state to a second activation state and vice versa, makes it possible to improve the activation control of the on-board system by providing direct access to the control via the use of the symbol of the on-board system displayed on a touch screen.

User control access is centralized on this touchscreen, reducing the time spent searching for the function and thus improving the safety of the vehicle and its passengers.

According to a variant, the first activation state and the second activation state belong to a set of activation states of the embedded system comprising:
- an activated state; and
- a disabled state.

According to another variant, the determined content of the HMI further includes a set of information representative of the vehicle.

According to an additional variant, the set of information includes information representative of an instantaneous speed of the vehicle.

According to another variant, the method is implemented during a rolling phase of the vehicle.

According to an additional variant, the second graphical representation is displayed as a replacement for the first graphical representation in the determined content.

According to another variant, the embedded system belongs to a set of embedded systems comprising:
- a vehicle driving assistance system, known as an ADAS system;
- an automatic vehicle stop and restart system;
- an audible warning system, called the AVAS system;
- an air conditioning system;
- a navigation system;
- an infotainment system; and
- a system or component of a vehicle's drive train.

According to a second aspect, the present invention relates to a device for controlling an on-board system in a vehicle, the device comprising a memory associated with a processor configured for implementing the steps of the method according to the first aspect of the present invention.

According to a third aspect, the present invention relates to a control system of an embedded system comprising a device as described above according to the second aspect of the present invention and a touch display screen communicatively connected to the device as described above according to the second aspect of the present invention.

According to a fourth aspect, the present invention relates to an electric vehicle, for example of the automobile type, comprising a device as described above according to the second aspect of the present invention or a system as described above according to the third aspect of the present invention.

According to a fifth aspect, the present invention relates to a computer program which comprises instructions adapted for the execution of the steps of the method according to the first aspect of the present invention, in particular when the computer program is executed by at least one processor.

Such a computer program may use any programming language, and may be in the form of source code, object code, or code intermediate between source code and object code, such as in a partially compiled form, or in any other desirable form.

According to a sixth aspect, the present invention relates to a computer-readable recording medium on which is recorded a computer program comprising instructions for carrying out the steps of the method according to the first aspect of the present invention.

On the one hand, the recording medium may be any entity or device capable of storing the program. For example, the medium may include a storage medium, such as a ROM memory, a CD-ROM or a microelectronic circuit type ROM memory, or a magnetic recording medium or a hard disk.

On the other hand, this recording medium may also be a transmissible medium such as an electrical or optical signal, such a signal being able to be conveyed via an electrical or optical cable, by conventional or hertzian radio or by self-directed laser beam or by other means. The computer program according to the present invention may in particular be downloaded from a network such as the Internet.

Alternatively, the recording medium may be an integrated circuit in which the computer program is incorporated, the integrated circuit being adapted to perform or to be used in performing the method in question.

Brief description of the figures

Other characteristics and advantages of the present invention will emerge from the description of the particular and non-limiting exemplary embodiments of the present invention below, with reference to the appended figures 1 to 5, in which:

schematically illustrates a portion of a vehicle passenger compartment, according to a particular exemplary embodiment of the present invention;

schematically illustrates a vehicle display device of the , according to a first particular and non-limiting example of embodiment of the present invention;

schematically illustrates a vehicle display device of the , according to a second particular and non-limiting exemplary embodiment of the present invention;

illustrates a device configured to control one or more systems embedded in the vehicle of the , according to a particular and non-limiting exemplary embodiment of the present invention.

illustrates a flowchart of the different stages of a process for controlling one or more systems embedded in the vehicle of the , according to a particular and non-limiting exemplary embodiment of the present invention.

Description of examples of implementation

A method and a device for controlling an on-board system in a vehicle will now be described in the following with joint reference to FIGS. 1 to 5. The same elements are identified with the same reference signs throughout the description which follows.

According to a particular and non-limiting example of embodiment of the present invention, the control of an on-board system in a vehicle, for example implemented by one or more computers of the vehicle, comprises controlling the display of a signal indicator representative of the on-board system according to a first graphic representation of the signal indicator. The signal indicator corresponds for example to a symbol or pictogram representing the on-board system and displayed on a touch screen of the vehicle. The signal indicator is displayed on the screen according to its first graphic representation in a determined content of a human-machine interface, called HMI, for example in a determined page of the HMI corresponding for example to the home screen or to the default screen of the HMI. The first graphic representation of the signal indicator is for example representative of a first activation state of the on-board system, for example the activated state (or the deactivated state). Data representative of a touch press on the displayed indicator light are received from the touch interface, for example when a user makes a touch press on the touch screen at the location where the indicator light is displayed in the determined content of the HMI displayed on the touch screen. Following receipt of the data representative of the touch press, a request to switch the on-board system from the first activation state to a second activation state is transmitted, for example to the computer responsible for controlling the on-board system. Finally, the display of the indicator light is controlled to display the indicator light according to a second graphic representation in the determined content of the HMI displayed on the touch screen. This second graphic representation is advantageously representative of the second activation state of the on-board system, for example the deactivated state (respectively the activated state).

Such a method makes it possible to control the transition from the first activation state to the second activation state (and vice versa) by a single touch press on the indicator light that corresponds to the symbol associated with the on-board system displayed in the HMI displayed on the touch screen of the vehicle. This avoids the user wishing to switch from the first activation state to the second activation state (or vice versa) from having to search in the various menus or contents of the HMI where the option to activate/deactivate the on-board system is located, the control of the activation state being obtained directly by pressing the symbol of the on-board system, advantageously the symbol defined in the international standard ISO-2575:2010, the international standard ISO-7000 or even in the international standard ISO-6727.

There schematically illustrates a portion of the passenger compartment of a vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention.

The vehicle 10 corresponds for example to a vehicle with a thermal engine, with electric motor(s) or even a hybrid vehicle with a thermal engine and one or more electric motors. The vehicle 10 thus corresponds for example to a land vehicle comprising a passenger compartment or at least equipped with a display screen, for example an automobile, a truck, a coach, a motorcycle.

The vehicle 10 advantageously includes a display system comprising a screen 13 with a touch interface and a computer configured to control the display of content(s) of a graphical HMI on the touch screen 13. The computer corresponds for example to the computer of the infotainment system, called the IVI (In-Vehicle Infotainment) computer of the vehicle 10. The connection between the computer and the head-up display device corresponds for example to a connection of the LVDS type (Low Voltage Differential Signaling).

According to a particular embodiment, the display system further comprises a display screen 12 corresponding for example to a transparent or semi-transparent blade 12, for example arranged on top of the dashboard 11 in front of the windshield of the electric vehicle 10. The transparent blade 12 is for example arranged behind the steering wheel 14, according to the point of view of a driver installed in the driver's seat 15, such that the driver sees the content displayed or projected on the transparent blade 12 when the driver is driving the electric vehicle 10. The transparent blade 12 thus corresponds to an element of a device or system called a head-up display. Such a display system comprises for example one or more projectors integrated for example in the dashboard 11. Such a system for projecting images or graphic content corresponds for example to a so-called augmented reality system, called AR (from the English “Augmented Reality”), for example a Head-Up Display system, called VTH or HUD (from the English “Head Up Display” or in French “Display Tête Haute”), which allows the embedding of virtual objects in the driver’s field of vision by projecting the images onto the blade 12, so as to superimpose the virtual objects of the projected images onto the real road scene. The projection of the images of the graphic object is for example controlled by one or more computers of the on-board system of the vehicle 10, for example by the IVI computer.

Such a display system comprising the touch screen 13 and the head-up display device 12 is for example provided or configured to reduce the number of screens present in the vehicle 10, making it possible for example to eliminate the display screen(s) called the instrument panel or dashboard and generally arranged in an area 141 behind the steering wheel in the dashboard 11.

According to a particular embodiment, the vehicle 10 has one or more on-board systems, each controlled by one or more computers. These computers, with the IVI computer, form for example a multiplexed architecture for the realization of different services useful for the proper functioning of the vehicle and for assisting the driver and/or the passengers of the vehicle in the control of the vehicle 10 via the control of the system(s) embedded in the vehicle 10. The computers communicate and exchange data between themselves via one or more computer buses, for example a communication bus of the CAN data bus type (from the English “Controller Area Network” or in French “Réseau de contrôles”), CAN FD (from the English “Controller Area Network Flexible Data-Rate” or in French “Réseau de contrôles à débit de données flexible”), FlexRay (according to the ISO 17458 standard), LIN (from the English “Local Interconnect Network” or in French “Réseau interconnecté local”) or Ethernet (according to the ISO/IEC 802-3 standard).

The system(s) embedded in the vehicle 10 correspond for example to one or more of the systems in the following list, this list being non-exhaustive and provided for illustration purposes:
- a vehicle driver assistance system, called an ADAS system, for example one or more of the following systems: a cruise control system, for example an adaptive cruise control system, called an ACC system (from the English "Adaptive Cruise Control"), and/or a predictive cruise control system, called a PCC system (from the English "Predictive Cruise Control"); an electronic stability control system, called an ESC system (from the English "Electronic Stability Control" or in French "Control electronic stability"), DSC system (from the English "Dynamic Stability Control" or in French "Control dynamic stability") or ESP system (from the English "Electronic Stability Program" or in French "Programme électronique de la sécurité"); a system for helping the vehicle keep in the lane of traffic, called an LKA system (from the English "Lane-Keeping Assist" or in French "Assistant de maintien dans la queue"); a system for warning against involuntary departure from the line, called an AFIL system; a traffic sign recognition/reading system, known as a TSR system (from the English “Traffic Sign Recognition”); an automatic dipped headlight activation system; an automatic windscreen wiper activation system; a driver attention monitoring system; a pedestrian detection system; a safety distance warning system, known as an ADS system; a road marking detection and recognition system; and/or a parking assistance system;
- an automatic air conditioning system; and/or
- an automatic vehicle stop and restart system, known as a STT (Start and Stop) system; and/or
- a navigation system; and/or
- an infotainment system; and/or
- an audible warning system, called AVAS (from the English “Acoustic Vehicle Alerting System” or in French “Audio vehicle alert system”);
- a system for controlling or supervising a component of the vehicle's drive train, for example the engine, the transmission, the traction battery for an electric vehicle, etc.

A process for controlling one or more on-board systems, for example one or more systems from the list above, of the vehicle 10 is advantageously implemented by the vehicle 10, for example by one or more processors of one or more computers of the on-board system of the vehicle 10, for example by the IVI computer.

The operations of the process are described below with reference to a single embedded system for the sake of clarity. Of course, the process applies in the same way for each embedded system in a set of embedded systems comprising several embedded systems.

Such a process applies in particular to any system or organ on board the vehicle configured to take an activated state (or “ON” in English) and a deactivated state (or “OFF” in English).

In a first operation, the display of a signal indicator representative of the on-board system is controlled in such a way that the signal indicator is displayed on the touch screen 13 according to a first graphic representation. The signal indicator is displayed in a determined content of a human-machine interface, called HMI, which content is displayed on the touch screen.

The content displayed includes, for example, a set of information useful to the driver to ensure control and supervision of the vehicle 10.

The set of information includes, for example, the instantaneous speed of the vehicle 10 when the latter is in a rolling or traffic phase, that is to say in motion, driven by the engine of the vehicle 10.

The set of information includes for example other additional information such as for example the remaining autonomy (expressed for example in km), the distance traveled, a level of energy remaining in the tank (for example the quantity of electrical energy remaining in the traction battery when the vehicle 10 corresponds to an electric vehicle or the quantity of fuel remaining in the tank when the vehicle 10 is a vehicle with a thermal engine), etc.

The first graphic representation of the indicator light is advantageously representative of a first activation state of the on-board system.

The first activation state corresponds, for example, to the activated state (i.e. the on-board system's operating or running state, or "ON" in English) or to the deactivated state (i.e. the off state, or "OFF" in English).

When the first activation state corresponds to the activated state, the first graphic representation of the signaling indicator advantageously corresponds to a symbol standardized according to ISO-2575, ISO-7000 or ISO-6727.

There illustrates examples of indicator lights displayed in a first determined area 21 of the touch screen. The first determined area 21 is for example assigned or dedicated for displaying contents of the HMI controlled by the IVI computer to provide or display to the driver the information necessary for controlling the vehicle 10, for example the instantaneous speed.

For example, when the on-board system corresponds to the ACC system, the signaling indicator displayed corresponds to indicator 211 when the ACC system is in the first activation state corresponding to the activated state, this signaling indicator 211 corresponding for example to the symbol defined in the ISO-7000 standard under reference 2580.

According to another example, when the on-board system corresponds to the LKA system, the signaling indicator displayed corresponds to indicator 212 when the LKA system is in the first activation state corresponding to the activated state, this signaling indicator 212 corresponding for example to the symbol defined in the ISO-7000 standard under reference 3180.

There illustrates the indicator lights 311, 312 associated with the ACC and LKA systems respectively when the ACC and LKA systems are in the deactivated state, the annotation “OFF” being added to the symbols of the to indicate to the driver that these systems are in a deactivated state.

One or more second determined zones 22 are for example assigned to other contents of the HMI, for example a zone for displaying information associated with the multimedia system of the vehicle 10 and/or a zone for displaying information associated with the navigation system of the vehicle 10.

When the first activation state corresponds to the activated state, the first graphical representation of the signaling indicator corresponds for example to that illustrated on the , that is, symbol 211 for the ACC system and symbol 212 for the LKA system.

When the first activation state corresponds to the deactivated state, the first graphical representation of the signaling indicator corresponds for example to that illustrated on the , that is, symbol 311 for the ACC system and symbol 312 for the LKA system.

In a second operation, data representative of a touch press on the indicator light are received, following a touch press by a user on the indicator light, for example on the indicator light 211 of the on-board system illustrated in the or on witness 311 of the same on-board system illustrated on the , depending on the current state of the embedded system, namely enabled or disabled respectively.

A touch on indicator 211 or 311 sends information to the IVI computer so that the latter implements a function associated with the command corresponding to the touch.

The data representative of the touch support are for example received via one or more data buses connecting the touch interface of the screen (or a computer controlling such a touch interface where applicable) and the IVI computer.

In a third operation, the IVI computer transmits a request to the computer controlling the on-board system associated with the indicator light 211, 311 on which the user has made a tactile press, for example the ACC system according to the example of the indicators 211, 311. The transmission of the request is triggered automatically by the reception of the data representative of the tactile press on the indicator light 211, 311. The request is for example generated automatically by the IVI computer upon reception of the data representative of the tactile press and then transmitted automatically via one or more data buses connecting the IVI computer to the computer controlling the on-board system concerned, for example the ACC system.

The request advantageously includes control or command data to request the transition of the on-board system concerned from the first activation state, i.e. the current state in which the on-board system is located when the indicator light 211, 311 is pressed to a second signaling state.

When the first activation state corresponds to the activated state (with a touch press on the indicator 211 of the ), then the second activation state required by the transmitted request corresponds to the deactivated state.

Conversely, when the first activation state corresponds to the deactivated state (with a tactile press on the indicator 311 of the ), then the second activation state required by the transmitted request corresponds to the activated state.

In a fourth operation, the computer receiving the request transmitted by the IVI computer controls the on-board system concerned to command the transition from the first activation state (current state) to the second required activation state.

According to a particular embodiment, an acknowledgement of receipt of the request is transmitted by the computer of the on-board system concerned to the IVI computer upon receipt of the request.

According to this embodiment, in the absence of an acknowledgment received within a determined time interval, the IVI calculator retransmits the request.

According to another embodiment, the computer controlling the on-board system transmits confirmation data of the transition to the second activation state to the IVI computer when the on-board system has actually transitioned to the second activation state.

In a fifth operation, the IVI calculator controls the display of the indicator light so that the latter is displayed in the determined content of the HMI according to a second graphic representation, this second graphic representation being representative of the second activation state of the on-board system.

For example, if the first graphic representation corresponded to that 211 of the (first activation state of the embedded system corresponding to the activated state), then the second graphic representation corresponds to that 311 of the (second activation state of the on-board system corresponding to the deactivated state).

Conversely, if the first graphic representation corresponded to that 311 of the (first activation state of the embedded system corresponding to the deactivated state), then the second graphic representation corresponds to that 211 of the (second activation state of the on-board system corresponding to the activated state).

The display of the indicator light according to the second graphic representation 211 or 311 replaces for example the display of the indicator light according to the first graphic representation 311 or 211 respectively. According to this example, the display location in the content of the HMI and on the screen 13 is the same regardless of the graphic representation (first or second) of the indicator light.

In another example, the signal indicator is displayed in a different location depending on whether it is in the first graphical representation or the second graphical representation (e.g. side by side).

If the user wishes to return the on-board system to the first activation state, he simply needs to make a tactile press on the indicator light 211 or 311 then displayed to trigger the second, third, fourth and fifth operations again, the display of the indicator light being modified again at the end of the process to graphically represent the activation state (activated or deactivated, i.e. “ON” or “OFF”) current and desired by the user.

Such a process allows the user to control with a single click or a single touch the activation status "On" or "Off" of each on-board system by using for this purpose the indicator lights representing each of these on-board systems. Access to the control is direct from a content or a home page or by default from the vehicle's HMI.

Such a process is intended to be implemented while the vehicle is in motion, in a rolling phase of the vehicle 10. This is permitted since access to the control is simple and direct without the need to navigate through the various contents and menus of the HMI via the touch interface of the screen 13. Such control is carried out in complete safety, the driver being able to maintain full attention on driving the vehicle 10.

There schematically illustrates a device 4 configured for controlling one or more on-board systems of a vehicle, for example the vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention. The device 4 corresponds for example to a device on board the vehicle 10, for example a computer.

The device 4 is for example configured for the implementation of the operations described with regard to figures 1 to 3 and/or the steps of the method described with regard to the . Examples of such a device 4 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 4, individually or in combination, can be integrated in a single integrated circuit, in several integrated circuits, and/or in discrete components. The device 4 can be realized in the form of electronic circuits or software (or computer) modules or even a combination of electronic circuits and software modules.

The device 4 comprises one (or more) processor(s) 40 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 4. The processor 40 may include integrated memory, an input/output interface, and various circuits known to those skilled in the art. The device 4 further comprises at least one memory 41 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.

The computer code of the embedded software(s) comprising the instructions to be loaded and executed by the processor is for example stored in memory 41.

According to various particular and non-limiting exemplary embodiments, the device 4 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 dedicated input/output ports.

According to a particular and non-limiting exemplary embodiment, the device 4 comprises a block 42 of interface elements for communicating with external devices. The interface elements of the block 42 comprise one or more of the following interfaces:
- 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 of the Bluetooth® type (according to IEEE 802.15.1), in the 2.4 GHz frequency band, or of the Sigfox type using UBN (Ultra Narrow Band) radio technology, or LoRa in the 868 MHz frequency band, LTE (Long-Term Evolution), LTE-Advanced;
- USB interface (from the English “Universal Serial Bus” or “Universal Serial Bus” in French);
- HDMI interface (from the English “High Definition Multimedia Interface”);
- LIN interface (from the English “Local Interconnect Network”).

According to another particular and non-limiting exemplary embodiment, the device 4 comprises a communication interface 43 which makes it possible to establish communication with other devices (such as other computers of the on-board system) via a communication channel 430. The communication interface 43 corresponds for example to a transmitter configured to transmit and receive information and/or data via the communication channel 430. The communication interface 43 corresponds for example to a wired network of the CAN (Controller Area Network), CAN FD (Controller Area Network Flexible Data-Rate), FlexRay (standardized by the ISO 17458 standard) or Ethernet (standardized by the ISO/IEC 802-3 standard).

According to a particular and non-limiting exemplary embodiment, the device 4 can provide output signals to one or more external devices, such as a display screen 440, touch-sensitive or not, one or more speakers 450 and/or other peripherals 460 (projection system) via output interfaces 44, 45 and 46 respectively. According to a variant, one or other of the external devices is integrated into the device 4.

There illustrates a flowchart of the different steps of a method for controlling one or more systems embedded in a vehicle, for example the vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention. The method is for example implemented by a device embedded in the vehicle 10 or by the device 4 of the .

In a first step 51, the display of a signaling indicator representative of the on-board system is controlled to be displayed according to a first graphic representation in a determined content of a human-machine interface, called HMI, displayed on the touch screen, the first graphic representation of the signaling indicator being representative of a first activation state of the on-board system.

In a second step 52, data representative of a touch press on the signaling indicator displayed according to the first graphic representation are received.

In a third step 53, a request to switch the on-board system from the first activation state to a second activation state is transmitted, the generation and transmission of the request being for example triggered by the reception of the data in step 52.

In a fourth step 54, the display of the indicator light is controlled to be displayed according to a second graphic representation in the determined content of the HMI displayed on the touch screen, the second graphic representation being representative of the second activation state of the on-board system.

According to a variant, the variants and examples of the operations described in relation to the apply to the process steps of the .

Of course, the present invention is not limited to the exemplary embodiments described above but extends to a method of displaying indicator lights according to several representations each representative of an activation state of an on-board system associated with the indicator light which would include secondary steps without thereby departing from the scope of the present invention. The same would apply to a device configured for implementing such a method.

The present invention also relates to a vehicle, for example an automobile or more generally an autonomous land-powered vehicle, comprising the device 4 of the or a display system comprising device 4 of the connected in communication to a touch screen 13.

Claims (10)

Method for controlling an on-board system in a vehicle (10), said vehicle (10) having a display system comprising a touch screen (13), said method comprising the following steps:
- control (51) of display of a signaling indicator representative of said on-board system, according to a first graphic representation (211), in a determined content of a human-machine interface, called HMI, displayed on said touch screen (13), said first graphic representation (211) of said signaling indicator being representative of a first activation state of said on-board system;
- reception (52) of data representative of a tactile press on said indicator light (211);
- transmission (53) of a request to switch said on-board system from said first activation state to a second activation state;
- control (54) of display of said indicator light, according to a second graphic representation (311), in said determined content of the HMI displayed on said touch screen (13), said second graphic representation (311) being representative of said second activation state of said on-board system. Method according to claim 1, wherein said first activation state and said second activation state belong to a set of activation states of said embedded system comprising:
- an activated state; and
- a disabled state. Method according to claim 1 or 2, for which said determined content of the HMI further comprises a set of information representative of said vehicle (10). Method according to claim 3, for which said set of information comprises information representative of an instantaneous speed of said vehicle (10). Method according to one of claims 1 to 4, said method being implemented during a rolling phase of said vehicle (10). Method according to one of claims 1 to 5, for which said second graphical representation (311) is displayed in replacement of said first graphical representation (211) in said determined content. Method according to one of claims 1 to 6, for which said embedded system belongs to a set of embedded systems comprising:
- a vehicle driving assistance system (10), called an ADAS system;
- an automatic vehicle stop and restart system (10);
- an audible warning system, called the AVAS system;
- an air conditioning system;
- a navigation system;
- an infotainment system; and
- a system or component of a vehicle drive chain (10). Computer program comprising instructions for implementing the method according to any one of the preceding claims, when these instructions are executed by a processor. Device (4) for controlling an on-board system of a vehicle (10), said device (4) comprising a memory (41) associated with at least one processor (40) configured for implementing the steps of the method according to any one of claims 1 to 7. Vehicle (10) comprising the device (4) according to claim 9.