Method and device for controlling a display system of a vehicle comprising a system for monitoring engine temperature

Abstract

The present invention relates to a method and a device for controlling a display system of a vehicle comprising a system for monitoring the engine temperature. To this end, a set of engine temperature indicators is displayed in determined content of a human-machine interface displayed in a first area of a touchscreen (13). Data representing a touch press on the displayed signalling indicator (21) are received. Graphical content (40) comprising a set of information relating to the tracking of the engine temperature of the vehicle is displayed in a second area of the touchscreen (13) upon receiving the data.

Description

DESCRIPTION . METHOD AND DEVICE FOR CONTROLLING A VEHICLE DISPLAY SYSTEM l tre 'INCLUDING AN ENGINE TEMPERATURE MONITORING SYSTEM Technical field

[0001] The present invention claims priority from French application 2400249 filed on January 11, 2024, the content of which (text, drawings and claims) is incorporated herein by reference.

[0002] The invention relates to methods and devices for controlling a display system of a vehicle, in particular but not exclusively a motor vehicle. The invention relates in particular to a method and a device for controlling the display of information relating to a system for monitoring the engine temperature or the coolant temperature of a vehicle. The invention also relates to a method and a device for assisting the driving of a vehicle. Technological background

[0003] 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.

[0004] 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 cristals liquide"), for example of the TFT type (from the English "Thin-Film Transistor" or in French "Thin film Transistor"), or OLED type (from the English "Organic Light-Emitting Diode" or in French "Organic electroluminescent diode").

[0005] The integration of such screens makes it possible, for example, to control, via a graphical Human-Machine Interface (HMI) displayed on such screens, the operating status of the systems embedded in the vehicle, for example ADAS systems (from the English "Advanced Driver-Assistance System" or in French "Système d'aide à la conduite avance").

[0006] The multiplication of systems on board the vehicle and the multiplication of means of command or control of these systems lead to an increase in complexity of the HM by which a user interacts with the on-board systems to control them, with in particular an increase in icons, displayed messages or command shortcuts, the control and management of which are consequently complicated for a user. The user experience is degraded and the attention of the driver of the vehicle may be reduced when different messages are displayed on the on-board screen(s).

[0007] Thus, information relating to engine temperature displayed on a screen such as a vehicle's dashboard can be confusing for the driver of a vehicle, as misreading or misinterpreting this information can affect the safety of the vehicle and its passengers. Summary of the present invention

[0008] An object of the present invention is to solve at least one of the problems of the technological background described above.

[0009] Another object of the present invention is, for example, to improve the user experience with respect to a vehicle engine temperature monitoring system.

[0010] According to a first aspect, the present invention relates to a method for controlling a display system of a vehicle, the vehicle having an on-board vehicle engine temperature monitoring system, the display system comprising a touch screen, the method being implemented by at least one processor and comprising the following steps: - reception of first data representative of a temperature measurement vehicle engine from the engine temperature monitoring system; - display control of a set of engine temperature indicators in a determined content of a human-machine interface, called HMI, displayed in a first zone of the touch screen according to the first data; - receiving second data representative of a first touch press on an engine temperature indicator of the set of engine temperature indicators; - control of display of graphic content comprising information representative of monitoring the vehicle's engine temperature following reception of the second data, the graphic content being displayed in a second zone of the touch screen.

[0011] The direct use of an engine temperature indicator (for example, a temperature warning light or indicator lamp and / or a temperature gauge) to request the display of additional content relating to the engine temperature monitoring system, for example, the temperature measured at a current time, a history of measured temperatures, an alert message, etc., allows the driver to obtain additional information on demand, by simply touching the temperature indicator. This reduces the inadvertent display of unwanted content by the driver, who controls the display of this content on demand. All content is also displayed on a single screen, which facilitates access to information and minimizes the time spent searching for information. This improves driver vigilance, as well as the safety of the vehicle and its passengers.

[0012] Centralizing controls on a single screen also eliminates the need for physical buttons to control the engine temperature monitoring system, reducing vehicle design and manufacturing costs.

[0013] According to one variant, the engine temperature indicator assembly comprises: - a first indicator corresponding to an engine temperature gauge; and - a second indicator corresponding to an engine temperature warning light.

[0014] According to another variant, the graphic content corresponds to a first graphic content comprising a first graphic object representative of a value digital engine temperature measurement when the first touch corresponds to a touch of a duration less than a threshold on the first indicator.

[0015] According to a further variant, the method further comprises the following steps: - receiving third data representative of a first touch scan on a part of the first graphic content; - control of display of a second graphic content replacing the first graphic content following receipt of the third data, the second graphic content comprising a first diagram representative of a history of engine temperature measurements of the vehicle.

[0016] According to a further variant, the method further comprises the following steps: - receiving fourth data representative of a second touch scan on a part of the second graphic content; - control of display of a third graphical content in replacement of the second graphical content following the reception of the fourth data, the third graphical content comprising a second diagram representative of a forecast of a temporal evolution of the engine temperature of the vehicle, the forecast being determined according to a set of operating parameters of the vehicle comprising a first parameter representative of a driving time, a second parameter representative of the speed of the vehicle and a third parameter representative of a coolant level.

[0017] According to another variant, the method further comprises a step of receiving fifth data representative of a request to display the second indicator initiated by a user of the vehicle, the display of the second indicator being triggered by the reception of the fifth data, the graphic content corresponding to a fourth graphic content comprising a second graphic object representative of a digital value of the engine temperature measurement and / or the first indicator when the first touch press corresponds to a touch press of a duration less than a threshold on the second indicator.

[0018] According to an additional variant, the method further comprises a step of receiving sixth data representative of a detection of an exceeding of a threshold temperature by the measurement of the engine temperature, the display of the second indicator being triggered by the reception of the sixth data, the graphic content corresponding to a fifth graphic content comprising a text message when the first touch press corresponds to a touch press of a duration less than a threshold on the second indicator.

[0019] According to another variant, the method further comprises the following steps: - receiving seventh data representative of a second touch press on the engine temperature indicator of the set of engine temperature indicators; - control of end of display of graphic content following reception of the seventh data.

[0020] According to a second aspect, the present invention relates to a device for controlling a display system of 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.

[0021] According to a third aspect, the present invention relates to a 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.

[0022] According to a fourth aspect, the present invention relates to a computer program which comprises instructions adapted for executing 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.

[0023] 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.

[0024] According to a fifth 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.

[0025] On the one hand, the recording medium can 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.

[0026] Furthermore, 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.

[0027] 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

[0028] 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 11, in which:

[0029] [Fig. 1] schematically illustrates a part of the passenger compartment of a vehicle, according to a particular exemplary embodiment of the present invention;

[0030] [Fig. 2] schematically illustrates a display device of the vehicle of FIG. 1, according to a first particular and non-limiting exemplary embodiment of the present invention;

[0031] [Fig. 3] schematically illustrates the display device of the vehicle of FIG. 1, according to a second particular and non-limiting exemplary embodiment of the present invention;

[0032] [Fig. 4] schematically illustrates the display device of the vehicle of FIG. 1, according to a third particular and non-limiting exemplary embodiment of the present invention;

[0033] [Fig. 5] schematically illustrates the display device of the vehicle of FIG. 1, according to a fourth particular and non-limiting exemplary embodiment of the present invention;

[0034] [Fig. 6] schematically illustrates the display device of the vehicle of FIG. 1, according to a fifth particular and non-limiting exemplary embodiment of the present invention;

[0035] [Fig. 7] schematically illustrates the display device of the vehicle of FIG. 1, according to a sixth particular and non-limiting exemplary embodiment of the present invention;

[0036] [Fig. 8] schematically illustrates the display device of the vehicle of FIG. 1, according to a seventh particular and non-limiting exemplary embodiment of the present invention;

[0037] [Fig. 9] schematically illustrates the display device of the vehicle of FIG. 1, according to an eighth particular and non-limiting embodiment of the present invention;

[0038] [Fig. 10] illustrates a device configured to control a display system of the vehicle of FIG. 1, according to a particular and non-limiting exemplary embodiment of the present invention.

[0039] [Fig. 11] illustrates a flowchart of the different steps of a method for controlling a display system of the vehicle of FIG. 1, according to a particular and non-limiting exemplary embodiment of the present invention. Description of examples of implementation

[0040] A method and device for controlling a vehicle display system will now be described in the following with joint reference to Figures 1 to 11. The same elements are identified with the same reference signs throughout the description which follows.

[0041] The terms "first(s)", "second(s)" (or "first(s)", "second(s)"), etc. are used in this document by arbitrary convention to identify and distinguish different elements (such as operations, means, etc.) implemented in the embodiments described below. Such elements may be distinct or correspond to a single element, depending on the embodiment.

[0042] According to a particular and non-limiting example of embodiment of the present invention, the control of an on-board display system in a vehicle is for example implemented by one or more computers of the vehicle, for example via one or more processors.

[0043] For this purpose, the display of one or more engine temperature indicators is controlled so that this or these indicators are displayed in a determined content of a human-machine interface, called HMI, displayed in a first zone of a touch screen of the vehicle display system. The temperature indicator corresponds for example to a temperature warning light or indicator or to a temperature gauge. The temperature indicator(s) are for example displayed in a determined page of the HMI corresponding for example to the home screen or the default screen of the HMI, this or these indicators giving an indication of the temperature in the vehicle engine obtained from first data received from a sensor of a vehicle engine temperature monitoring system.

[0044] Second data representative of a touch press on one of the displayed indicators, i.e. on the temperature gauge or on the temperature warning 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 engine temperature indicator is displayed.

[0045] Following receipt of the second data, the computer controls the display of graphic content including information relating to the monitoring or control of the vehicle's engine temperature in a second area of ​​the touch screen.

[0046] Such a method makes it possible to control, via a voluntary action, the display of a set of graphic contents including information relating to the vehicle's engine temperature.

[0047] A vehicle engine temperature monitoring system corresponds to a system configured to measure and monitor a temperature representative of the temperature in the vehicle's engine, this temperature corresponding for example to the temperature of the vehicle's coolant. The measurement of such a temperature makes it possible to display a current engine temperature indication, for example via a temperature gauge and / or to issue an alert (via the display of the temperature warning light) if the measured temperature rises above a determined threshold temperature (the threshold temperature being for example equal to 110°C). The temperature measurement is obtained from a temperature sensor or probe positioned in the engine cooling circuit, for example at the cylinder head, the probe being associated with a computer forming with the probe the engine temperature monitoring system.Such a probe comprises for example 2 wires, the temperature measurement being obtained by measuring the voltage at the level of the 2 wires, which voltage is for example equal to 5 V when the temperature is equal to the ambient temperature (of the atmosphere in which the vehicle is located when the vehicle is started), the voltage decreasing as the temperature of the coolant increases.

[0048] Figure 1 schematically illustrates a part of the passenger compartment of a vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention.

[0049] The vehicle 10 corresponds, for example, to a vehicle with a thermal engine or to a hybrid vehicle with a thermal engine and one or more electric motors. The vehicle 10 thus corresponds, for example, to a land vehicle, for example a car, a truck, a bus.

[0050] According to one variant, the vehicle 10 corresponds to an electric vehicle with only one or more electric motors to the exclusion of any thermal engine. According to this variant, the temperature representative of the temperature in the engine of the vehicle corresponds to the temperature in the traction battery, such a temperature being for example obtained from a BMS system (from the English “Battery Management System” or in French “Battery control system”) associated with or included in the traction battery of the vehicle 10.

[0051] The vehicle 10 advantageously incorporates 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 MMI on the touch screen 13. The computer corresponds for example to the computer of the infotainment system, called the IVI computer (from the English “In-Vehicle Infotainment” or in French “Infodivertissement embarké”) of the vehicle 10.

[0052] The touch screen 13 corresponds for example to a screen of the LCD type (from the English “Liquid Crystal Display” or in French “Display à cristals 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”).

[0053] The touch screen 13 is configured to display content intended for the driver and passengers of the vehicle 10. The touch screen 13 is also configured to allow the driver and / or passengers of the vehicle to interact with one or more systems embedded in the vehicle via a human machine interface (HMI) displayed on the touch screen 13. For example, the screen 13 is configured to interact with the IVI system and / or an engine temperature monitoring system of the vehicle 10.

[0054] According to a particular embodiment, the display system comprises one or more other screens, for example a screen of a so-called head-up display device or system corresponding for example to a transparent or semi-transparent blade arranged in such a way that a driver seated in the seat 15 sees the content displayed or projected on the transparent blade when the driver drives the vehicle 10. The display system further comprises, for example, a display screen called a handset or dashboard and generally arranged in an area 12 behind the steering wheel 14 in the dashboard 11.

[0055] According to a particular embodiment, the display system comprising the touch screen 13 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.

[0056] 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) on board the vehicle 10.ECUs communicate and exchange data with each other via one or more computer buses, for example a communication bus of the data bus type CAN (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).

[0057] An on-board system in the vehicle 10 corresponds to a system for monitoring the engine temperature of the vehicle 10.

[0058] A process for controlling an on-board display system in the vehicle 10 is advantageously implemented by one or more processors of the display system, for example by a computer of an on-board system of the vehicle 10 such as the IVI system.

[0059] A first mode of implementation of the display control process is described below with reference to figures 2, 4, 5 and 6.

[0060] A second mode of implementation of the display control process is described below with reference to Figures 3, 7, 8 and 9.

[0061] The first process implementation mode and the second process implementation mode are performed independently of each other or in combination, as described below.

[0062] In a first operation of the process according to the first mode of implementation and according to the second mode of implementation, first data representative of a measurement of the engine temperature of the vehicle are received by the computer implementing the process from the engine temperature monitoring system, for example from the computer controlling such a system via one or more data buses.

[0063] The temperature measurement is carried out continuously or discretely, with the temperature information being transmitted via the first data continuously or at regular intervals (e.g. every 100, 2500, 500 or 1000 ms).

[0064] According to an alternative embodiment, the first data are only transmitted when the measured temperature exceeds the threshold temperature for displaying an alert via the display of a temperature indicator (or light) such as the indicator 31 illustrated in FIG. 3, the indicator 31 being, for example, red in such a case.

[0065] In a second operation of the process according to the first mode of implementation and according to the second mode of implementation, the display of a set of temperature indicators is controlled in such a way that this set of temperature indicators is displayed on the touch screen 13 in a determined content of a human-machine interface, called HMI, which content is displayed on the touch screen 13.

[0066] The displayed content 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, i.e. in motion, driven by the vehicle's engine 10, a rev counter, the remaining range (expressed for example in km), the distance traveled, a volume or level of fuel remaining in the tank, etc.

[0067] The temperature indicator set includes one or more temperature indicators, namely: - a first indicator corresponding to an engine temperature gauge; and / or - a second indicator corresponding to an engine temperature warning light.

[0068] According to the first embodiment, the temperature indicator corresponds to the first indicator 21 as illustrated in FIG. 2.

[0069] According to the second embodiment, the temperature indicator corresponds to the second indicator 31 as illustrated in FIG. 3.

[0070] According to an alternative embodiment, the first indicator 21 and the second indicator 31 are displayed simultaneously, the color of the second indicator 31 varying for example depending on whether the temperature is lower or higher than the threshold temperature.

[0071] Figure 2 illustrates a result of the display control of the temperature indicator corresponding to the first indicator 21 on the touch screen 13, according to a particular and non-limiting exemplary embodiment.

[0072] The first indicator 21 corresponds to a temperature gauge, i.e. a temperature scale giving an indication of the current temperature of the engine when it is within the temperature range associated with the scale (between a minimum temperature, for example, equal to 50°C and a maximum temperature, for example, equal to 130°C). The current temperature is, for example, indicated by an arrow or a needle pointing towards the current temperature value and / or by a color code (varying from blue to red via orange, blue being associated with the lowest temperatures (for example, below 70°C), orange with nominal temperatures (for example, between 70 and 110°C) and red with the highest temperatures (for example, above 110°C)). Others graphical representations are of course possible and covered by the present invention.

[0073] The temperature indication via the temperature gauge is usually approximate.

[0074] Figure 3 illustrates a result of the display control of the temperature indicator corresponding to the second indicator 31 on the touch screen 13, according to a particular and non-limiting exemplary embodiment.

[0075] The second indicator 31 corresponds, for example, to a pictogram representing a thermometer immersed in a liquid.

[0076] A display control of a temperature indicator, graphic content or any graphic object (text, pictogram, icon, etc.) comprises a rendering of the graphic content or the graphic object, such rendering corresponding to a set of operations carried out by one or more processors on the pixels of one or more images of the graphic content to be displayed on the screen 13. For example, the rendering consists of associating with a set of pixels of an image pixel data (for example color data expressed in an RGB type space (from the English "Red, Green, Blue" or in French "rouge, vert, bleu")) associated with each graphic object.

[0077] The display control of the first indicator 21 and / or the second indicator 31 thus comprises the transmission of control signals to the touch screen to modify the values ​​associated with the pixels of the touch screen 13 at the location intended to display the first indicator 21 and / or the second indicator 31 (or any graphic object).

[0078] The display of the first indicator 21 and / or the second indicator 31 is controlled so that this or these indicators are displayed in a first determined zone of the touch screen 13. According to the particular example of FIGS. 2 and 3, the first zone corresponds to an area located at the bottom right of the screen 13, according to the point of view of a person looking at the screen 13 from a front seat of the vehicle 10 for example.

[0079] According to the first mode of implementation of the process, second data representative of a first tactile press 201 on the first indicator 21 are received, following a tactile press 201 of a user (for example the driver of the vehicle 10) on the first indicator 21 in a third operation of the process.

[0080] The second data are representative of a first tactile press 301 on the second indicator 31 and are received according to the second mode of implementation of the invention.

[0081] A tactile press on the first indicator 21 and / or on the second indicator 31 sends information to the IVI computer so that the latter implements one or more functions associated with the command corresponding to the tactile press.

[0082] The second data representative of the touch press 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.

[0083] In a fourth operation of the process, the IVI calculator controls the display of graphic content comprising one or more pieces of information representative of monitoring of the engine temperature of the vehicle 10. The control of display of the graphic content is for example triggered by the reception of the second data.

[0084] The fourth operation includes, for example, the transmission of a request by the IVI computer to the computer controlling the engine temperature monitoring system, via one or more data buses, to receive the information necessary for displaying the graphic content.

[0085] The graphic content belongs to a set of graphic contents, particular examples of which are described below with reference to figures 3 to 9. The graphic content is displayed in a second zone of the touch screen 13, which is for example different from the first zone comprising the first indicator 21 and / or the second indicator 31. According to an alternative embodiment, the first zone and the second zone overlap at least partially.

[0086] According to a particular and illustrative embodiment, the second zone is located in the center of the touch screen 13.

[0087] According to a particular example, the graphic content is for example displayed in a window occupying a part of the display area of ​​the screen 13 and corresponding to the second area, this window corresponding for example to a contextual window, also called an intrusive or pop-up window (from the English “pop-up window”). This window is for example displayed next to the first area, for example centered on the screen (around the center of the screen 13).

[0088] According to the first mode of implementation of the process, the graphic content corresponds to a first graphic content 40 as illustrated in FIG. 4, the display of this first graphic content being triggered by the reception of the second data representative of the first tactile press 201 on the first indicator 21.

[0089] The first graphic content 40 is displayed under the control of the computer in charge of the process when the second data is representative of a so-called brief tactile press 201, that is to say the duration of the press on the first indicator 21 is less than a threshold duration (for example equal to 500 or 1000 ms).

[0090] The first graphic content 40 comprises a first graphic object 41 representative of a numerical value of the engine temperature measurement, for example the value of the current engine temperature measured during the first touch press 201. The numerical value corresponds for example to an integer followed by the unit of the temperature, the unit corresponding for example to degrees Celsius (°C) or to degrees Fahrenheit (°F), depending for example on the driver's choice.

[0091] The display color of the numerical value is fixed or the color varies depending on the numerical value displayed (for example, the color varies from blue (or green) to red through orange depending on the numerical value, with blue (or green) being used for temperatures below a first threshold, red for temperatures above a second threshold, and orange for temperatures between the first threshold and the second threshold).

[0092] According to an alternative embodiment, the first graphic object 41 further comprises a ring or circular steps at least partially surrounding the numerical value, the color of the ring or steps varying from left to right to go for example from blue (or green) to red via orange, the ring or steps being activated to represent the temperature by the associated color.

[0093] According to another variant, the first graphic content 40 further comprises a text message, for example displayed under the first graphic object 41, to specify the nature of the engine temperature, for example to specify that it is the temperature of the water (or the coolant) or the temperature of the traction battery (for an electric or hybrid vehicle).

[0094] Thus, the first touch 201 allows the engine temperature to be displayed precisely and legibly by the driver whenever he wishes.

[0095] In an additional operation of the process according to the first embodiment, third data representative of a first touch scan 401 on a part of the first graphic content 40 are received following the execution of a touch scan at the display location of the first graphic content 40 on the screen 13 by the driver (or a passenger) of the vehicle 10.

[0096] A touch scan corresponds to a continuous and prolonged touch press of one (or more) fingers on a part of the screen 13, the continuous and prolonged touch press forming a line of a segment (from 1 to several centimeters for example), the segment being for example horizontal (as represented by the arrow 401 in figure 4), or even vertical or oblique.

[0097] Following receipt of the third data, the display of a second graphic content 50 is controlled so that the second graphic content 50 is displayed in the second area, replacing the first graphic content 40.

[0098] The second graphic content 50 is illustrated in FIG. 5, according to a particular example. This second graphic content 50 advantageously comprises a first diagram 51 representative of a history of the engine temperature of the vehicle 10, that is to say a curve 51 representing the evolution of the temperature as a function of time over a time interval preceding the first touch press 201. The history of the engine temperatures represents for example the temporal evolution of the engine temperature from the last start of the engine preceding the first touch press 201 until the time instant corresponding to the first touch press 201.

[0099] In an additional operation of the process according to the first embodiment, fourth data representative of a second touch scan 501 on a part of the second graphic content 50 are received following the execution of a touch scan at the display location of the second graphic content 50 on the screen 13 by the driver (or a passenger) of the vehicle 10.

[0100] Following receipt of the fourth data, the display of a third graphic content 60 is controlled so that the third graphic content 60 is displayed in the second area, replacing the second graphic content 50.

[0101] The third graphic content 60 is illustrated in FIG. 6, according to a particular example. This third graphic content 60 advantageously comprises a second diagram 61 representative of a forecast of a temporal evolution of the engine temperature of the vehicle, that is to say one or more curves 61 representing one or more possible temporal evolutions over a forecast or projection duration equal to a few hours following the current instant or following the instant associated with the first tactile press 201.

[0102] Each temperature forecast is for example determined from a set of operating parameters of the vehicle 10 comprising a first parameter representative of a driving time (for example the duration of use of the vehicle without interruption or without interruption of a duration greater than a threshold), a second parameter representative of the speed of the vehicle (for example the average speed, the maximum speed, a percentage of driving with a speed greater than a threshold) and a third parameter representative of a coolant level. The forecasts are calculated or determined from determined rules or charts by taking the values ​​of the parameters as input.

[0103] The third graphic content 60 further comprises, for example, a text message 62 (for example, displayed in an area provided under the second diagram 61). The text message 62 comprises, for example, a text informing the driver of the risk associated with the forecast of the evolution of the engine temperature, for example, a risk of overheating with optionally the action(s) to be taken to reduce the risks. The text corresponds, for example, to the following message: “Risk of engine overheating if no coolant is added before XXX km”, with ‘XXX’ indicating the distance in km.

[0104] According to the first mode of implementation of the process, the reception of data (called seventh data) representative of a second tactile press on the first indicator 21 causes the control of the end of the display of the first graphic content 40, of the second graphic content 50 or of the third graphic content 60 according to the graphic content displayed on the screen 13 at the time of the second tactile press.

[0105] The second touch press corresponds, for example, to a short or brief touch press whose duration is less than the threshold duration described previously, just like the first touch press 201.

[0106] The content then displayed on the screen 13 following the second touch press and the control of the end of display of the first, second or third graphic content corresponds to the graphic content displayed on the screen 13 at the time of the first touch press 201 on the first indicator 21.

[0107] According to the second mode of implementation of the process, the display of the second indicator 31 is triggered by: - the reception of fifth data representative of a request to display the second indicator initiated by a user of the vehicle 10, for example by the driver of the vehicle 10; the fifth data are for example obtained from a voice-controlled human-machine interaction system, the driver having requested the display of the second indicator 31 by voice command; or - the reception of sixth data representative of a detection of an exceedance of a threshold temperature (for example 105, 110 or 115 ° C) by the measurement of the engine temperature, i.e. when the engine temperature measured by the engine temperature monitoring system exceeds the threshold temperature, the sixth data being representative of an alert of risk of overheating of the engine of the vehicle 10.

[0108] According to the second mode of implementation of the process, the graphic content corresponds to a fourth graphic content 70 comprising a second graphic object 71 representative of a digital value of the engine temperature measurement and / or the first indicator 21 when the first tactile press 301 on the second indicator 31 displayed following the reception of the fifth data corresponds to a short or brief tactile press, that is to say a tactile press of a duration less than the threshold described previously.

[0109] Figure 7 illustrates the fourth graphic content 70 comprising the second graphic object 71, which second graphic object 71 corresponds for example to the first graphic object 41 described previously with regard to Figure 4.

[0110] According to the example of Figure 7, the fourth graphic content 70 is identical or similar to the first graphic content 40.

[0111] Figure 8 illustrates the display of the first indicator 21 following the reception of the fifth data. The first indicator 21 is for example displayed when the temperature gauge is not displayed by default on the screen 13, the first touch press 301 on the second indicator 31 whose display was requested by the user of the vehicle 10 then triggering the display of the first indicator 21 representing the temperature gauge to provide the user, for example the driver, with an indication of the current engine temperature, that is to say at the time of the first touch press 301.

[0112] According to another example, the representation of the temperature gauge is different from that of the first indicator 21 and corresponds for example to a mechanical representation of a needle gauge, which representation is for example displayed in the center of the screen in place of the second graphic object 71.

[0113] According to an alternative embodiment, the fourth graphic content 70 comprises the second graphic object 71 and the first indicator 21 displayed simultaneously on the screen 13.

[0114] According to this second mode of implementation of the process, the reception of data (called seventh data) representative of a second tactile press 701 or 801 on the second indicator 31 causes the control of the end of the display of the fourth graphic content 70 on the screen 13.

[0115] The second touch press corresponds, for example, to a short or brief touch press whose duration is less than the threshold duration described previously, just like the first touch press 301.

[0116] The content then displayed on the screen 13 following the second touch press and the control of the end of display of the fourth graphic content 70 corresponds to the graphic content displayed on the screen 13 at the time of the first touch press 301 on the second indicator 31.

[0117] According to a particular embodiment, the second tactile press also causes the display of the second indicator 31 to end, the display of the second indicator 31 having been requested by a command from the user of the vehicle 10. According to a variant, the display of the second indicator 31 to end is triggered following a long tactile press on the second indicator 31, i.e. a tactile press of duration greater than the threshold duration defined previously and for example equal to 500 or 1000 ms.

[0118] According to the second mode of implementation of the process, the graphic content corresponds to a fifth graphic content 90 comprising a text message 92 when the first touch press 301 corresponds to a brief touch press of a duration less than the threshold described previously, the second indicator 31 having been displayed following the reception of the sixth data, that is to say automatically under the control of the computer in charge of the process when overheating of the engine has been detected.

[0119] Figure 9 illustrates such a fifth graphic content 90 according to a particular exemplary implementation of the invention.

[0120] Text message 92 corresponds, for example, to the message automatically displayed under the control of the computer when engine overheating has been detected, i.e. when the measured engine temperature exceeds a determined threshold temperature. Such a message is automatically displayed each time the threshold temperature is exceeded, the display being of limited duration (for example 2 or 3 seconds).

[0121] Touching the second indicator then displayed allows the display of the alert message to be requested once this message is no longer displayed. This allows the driver, for example, to reread the message to understand why the second indicator 31 was automatically displayed. The message is, for example, of the type: “abnormal coolant temperature”, for example with a display in black letters on a red background.

[0122] According to a particular exemplary embodiment, the fifth graphic content 90 further comprises a pictogram or graphic object 91 corresponding to the pictogram of the second indicator 31, for example of a size greater than that of the second indicator 31.

[0123] The graphic object 91 is for example displayed below or above the message 91.

[0124] The display of the fifth graphic content 90 is controlled so that the display duration of the fifth graphic content is limited in time, for example equal to 2, 3, 5 or 10 seconds (the display duration being for example configurable by a user via an HMI).

[0125] According to a variant, the end of the display of the graphic content 90 is controlled following the reception of data (called seventh data) representative of a second tactile press 901, for example a brief tactile press, on the second indicator 31, the fifth graphic content 90 remaining displayed on the screen 133 as long as the user has not clicked on the second indicator 31. According to this example of realization, the second indicator 31 remains displayed on the screen despite the second touch press 901.

[0126] According to a particular embodiment, the control of the end of display of a displayed graphic content is triggered following a tactile press on an icon (for example a cross) displayed on a part of the graphic content, for example in an upper right or left corner of the display area of ​​the graphic content considered.

[0127] Figure 10 schematically illustrates a device 100 configured for controlling a display system of a vehicle, for example the vehicle 10, and / or for controlling functions implemented by an engine temperature monitoring system of the vehicle, according to particular and non-limiting exemplary embodiments of the present invention. The device 100 corresponds for example to a device on board the vehicle 10, for example a computer.

[0128] The device 100 is for example configured to implement the operations described with respect to figures 1 to 9 and / or the steps of the method described with respect to figure 11. Examples of such a device 100 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 100, individually or in combination, can be integrated into a single integrated circuit, into several integrated circuits, and / or into discrete components. The device 100 can be produced in the form of electronic circuits or software (or computer) modules or even a combination of electronic circuits and software modules.

[0129] The device 100 comprises one (or more) processor(s) 101 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 100. The processor 100 may include integrated memory, an input / output interface, and various circuits known to those skilled in the art. The device 100 further comprises at least one memory 102 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.

[0130] 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 102.

[0131] According to various particular and non-limiting embodiments, the device 100 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.

[0132] According to a particular and non-limiting exemplary embodiment, the device 100 comprises a block 104 of interface elements for communicating with external devices. The interface elements of the block 104 comprise one or more of the following interfaces: - RF radio frequency interface, for example 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; - USB interface (from the English “Universal Serial Bus” or “Universal Serial Bus” in French); - HDMI interface (from the English “High Definition Multimedia Interface” or “High Definition Multimedia Interface” in French); - LIN interface (from the English “Local Interconnect Network”).

[0133] According to another particular and non-limiting exemplary embodiment, the device 100 comprises a communication interface 104 which makes it possible to establish communication with other devices (such as other computers of the on-board system) via a communication channel 1040. The communication interface 104 corresponds for example to a transmitter configured to transmit and receive information and / or data via the communication channel 1040. The communication interface 104 corresponds for example to a wired network of the CAN (Controller Area Network) type, 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).

[0134] According to a particular and non-limiting exemplary embodiment, the device 100 can provide output signals to one or more external devices, such as a display screen 1050, touch-sensitive or not, one or more speakers 1060 and / or other peripherals 1070 (projection system) via output interfaces 105, 106 and 107 respectively. According to a variant, one or other of the external devices is integrated into the device 100.

[0135] Figure 11 illustrates a flowchart of the different steps of a method for controlling a display system on board 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 on board the vehicle 10 or by the device 100 of Figure 10, in particular by one or more processors of such a device 100.

[0136] In a first step 111, first data representative of a measurement of the engine temperature of the vehicle are received from the engine temperature monitoring system.

[0137] In a second step 112, the display of a set of engine temperature indicators of the vehicle is controlled so that this set of engine temperature indicators is displayed in a determined content of a human-machine interface, called HMI, displayed in a first zone of the touch screen.

[0138] In a third step 113, second data representative of a touch pressure on an engine temperature indicator of the set of engine temperature indicators are received.

[0139] In a fourth step 114, the display of graphical content comprising information representative of monitoring the engine temperature of the vehicle is controlled so that the graphical content is displayed in a second zone of the touch screen, following the reception of the second data.

[0140] According to a variant, the variants and examples of the operations described in relation to one of figures 1 to 9 apply to the steps of the method of figure 11.

[0141] Of course, the present invention is not limited to the exemplary embodiments described above but extends to a method for displaying one or more indicators and graphic contents representative of an engine temperature monitoring system 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.

[0142] The present invention also relates to a vehicle, for example an automobile or more generally an autonomous land-based motor vehicle, comprising the device 100 of FIG. 10 or a display system comprising the device 100 of FIG. 10 connected in communication to a touch screen 13.

Claims

CLAIMS 1. Method for controlling a display system of a vehicle (10), said vehicle (10) having an engine temperature monitoring system for the vehicle (10), said display system comprising a touch screen (13), said method being implemented by at least one processor and comprising the following steps: - receiving (111) first data representative of a measurement of the engine temperature of said vehicle (10) from said engine temperature monitoring system; - control (112) of display of a set of engine temperature indicators in a determined content of a human-machine interface, called HMI, displayed in a first zone of said touch screen (13) as a function of said first data; - reception (113) of second data representative of a first tactile press (201, 301) on an engine temperature indicator (21, 31) of said set of engine temperature indicators; - control (114) of display of graphic content (40, 50, 60, 70, 90) comprising information representative of engine temperature monitoring of said vehicle (10) following reception (113) of said second data, said graphic content (40, 50, 60, 70, 90) being displayed in a second zone of said touch screen (13).

2. The method of claim 1, wherein said set of engine temperature indicators comprises: - a first indicator (21) corresponding to an engine temperature gauge; and - a second indicator (31) corresponding to an engine temperature indicator.

3. Method according to claim 2, for which said graphic content corresponds to a first graphic content (40) comprising a first graphic object (41) representative of a numerical value of said engine temperature measurement when said first tactile press (201) corresponds to a tactile press of a duration less than a threshold on said first indicator.

4. The method of claim 3, further comprising the following steps: - receiving third data representative of a first touch scan (401) on a portion of said first graphic content (40); - control of display of a second graphic content (50) in replacement of said first graphic content (40) following the reception of said third data, said second graphic content (50) comprising a first diagram (51) representative of a history of engine temperature measurements of said vehicle (10).

5. The method of claim 4, further comprising the following steps: - receiving fourth data representative of a second touch scan (501) on a part of said second graphic content (50); - control of display of a third graphic content (60) in replacement of said second graphic content (50) following the reception of said fourth data, said third graphic content (60) comprising a second diagram (61) representative of a forecast of a temporal evolution of the engine temperature of said vehicle (10), said forecast being determined as a function of a set of operating parameters of said vehicle comprising a first parameter representative of a driving time, a second parameter representative of the speed of said vehicle and a third parameter representative of a coolant level.

6. Method according to claim 2, further comprising a step of receiving fifth data representative of a request to display said second indicator (31) initiated by a user of said vehicle (10), the display of the second indicator (31) being triggered by the reception of said fifth data, said graphic content corresponding to a fourth graphic content (70) comprising a second graphic object (71) representative of a numerical value of said engine temperature measurement and / or said first indicator (21) when said first touch press (301) corresponds to a touch press of a duration less than a threshold on said second indicator (31).

7. Method according to claim 2, further comprising a step of receiving sixth data representative of a detection of an exceeding of a threshold temperature by said measurement of the engine temperature, the display of the second indicator (31) being triggered by the reception of said sixth data, said graphic content corresponding to a fifth graphic content (90) comprising a text message (91) when said first touch press (301) corresponds to a touch press of a duration less than a threshold on said second indicator (31).

8. The method of claim 1, further comprising the following steps: - receiving seventh data representative of a second tactile press on said engine temperature indicator of said set of engine temperature indicators; - control of the end of display of said graphic content following receipt of said seventh data.

9. Device (100) for controlling a vehicle display system, said device (100) comprising a memory (102) associated with at least one processor (101) configured for implementing the steps of the method according to any one of claims 1 to 8.

10. Vehicle (10) comprising the device (100) according to claim 9.

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