MOTOR VEHICLE MOVEMENT ALERT SYSTEM

Abstract

The invention relates to a system (10) for alerting the movement of a motor vehicle (1) comprising at least one light alert device (12a, 12b) capable of emitting a light signal when it is activated and a control system (14) for this light alert device capable of being connected to an electronic control unit (2) of the vehicle.The control system is configured to: (a) check with the electronic control unit (2) the availability of at least two pieces of vehicle status information, (b) determine that activation conditions are met when contact and speed information are present and when the speed information indicates a non-zero vehicle speed below a threshold value, otherwise repeat step (a), (c) activate the at least one light warning device (12a, 12b) when the activation conditions are met, repeat steps (a), (b) and maintain activation as long as the activation conditions are met, otherwise deactivate. Figure for abstract: figure 1.

Description

Description Title of the invention: MOVEMENT ALERT SYSTEM OF A MOTOR VEHICLE

[0001] | The invention relates to a system for alerting the movement of a motor vehicle.

[0002] Many vehicles are equipped with systems for avoiding a collision and / or detect a pedestrian. Typically, these systems are triggered when a sensor detects an obstacle around the vehicle.

[0003] — For example, document US9718405B1 describes a system for avoiding a collision and / or pedestrian detection comprising a first detection sensor characteristic data of a position or movement of the vehicle and a external detection device that is activated or not in response to movement of advancement at a speed lower or higher than a determined detected speed by the first sensor. A visual or audible alert to the driver or a pedestrian is triggered if, when the external detection device is activated, a sensor of the external detection device detects the presence of a danger. The alert is thus de- triggered only if the sensor of the external detection device detects a danger. The document US9168867B2 describes a system for notifying a pedestrian that the vehicle detected it, notably by projecting a signal onto the ground outside the vehicle. The signal notification is triggered by a sensor detecting the presence of the pedestrian when the vehicle is moving. These different systems present the disadvantage of only triggering the alarm when a sensor detects danger. However, in case of detector failure, or when the sensor detection is reduced or limited by the immediate environment of the vehicle, the alarm is not triggered not. This can be particularly dangerous for other road users, and including pedestrians and two-wheelers, when the vehicle is stationary (in a parking lot or in traffic) but ready to go. In particular, it can be difficult for a pedestrian or other road user to know that the vehicle is stationary but ready to move. The same applies when a vehicle makes a parking space exit maneuver (herringbone / battle). During this type of maneuver, it may be difficult for an individual to quickly identify that the vehicle will reverse using only the information from the latter's reversing lights.

[0004] This problem has been partly resolved by the system described in the document W0O2017 / 019264 which allows other drivers, cyclists and pedestrians to be alerted of a vehicle movement. This system is activated when the reversing lights are activated or when reverse gear is engaged. This system is however limited to rear movements of the vehicle. There is therefore a need for a reliable vehicle movement alert system that can alert a pedestrian of the upcoming movement of a vehicle, regardless of the direction of movement of that vehicle. For this purpose, a motor vehicle movement alert system is proposed comprising: - at least one light warning device capable of emitting a light signal when activated, - a control system for at least one light warning device capable of being connected to the electronic control unit of the vehicle and configured, in particular programmed, to: (a) check with the electronic control unit the availability of at least two vehicle status information items, including (i) contact information, corresponding to a started vehicle state in which the vehicle engine is started or ready to start, and (ii) vehicle speed information, and acquire them when they are present, (b) determining that activation conditions are met when the contact information and the speed information are present and when the speed information indicates a non-zero vehicle speed less than a threshold value, otherwise, determining that the activation conditions are not met and repeating step (a), (c) activating the at least one light warning device when the activation conditions are met, repeating steps (a) and (b) and keeping the at least one light warning device activated as long as the activation conditions are met, otherwise deactivating it. The light warning device(s) are thus activated on the basis of vehicle status information and not on the basis of information from a sensor capable of detecting the presence of an obstacle outside the vehicle, which improves its reliability. Furthermore, since, according to the invention, at least two activation conditions are necessary to activate the warning device, the risk of erroneous activation of the light warning device (e.g. when the vehicle is not ready to start) is low. A low speed threshold value will preferably be chosen, for example less than 3 km / h. Typically, the control system may be configured (in particular programmed) to, in an initialization step, corresponding for example to the starting of the vehicle, deactivate the at least one light warning device. The control system then repeats steps (a) to (c). Advantageously, the control system can be configured, in particular programmed, to: (a) further check with the electronic control unit the availability of at least at least one additional vehicle status information selected from (iii) closed doors information corresponding to a vehicle status in which all doors are closed, (iv) driver seat belt buckled information corresponding to a vehicle status in which the driver's seat belt is fastened, (v) assisted driving or autonomous driving information corresponding to a vehicle status in which the vehicle is operating in an assisted driving mode or in an autonomous driving mode, (vi) automatic gearbox position information, and acquire it when it is present, (b) determining that activation conditions are met when the contact information and the speed information are present, the speed information indicates a non-zero vehicle speed less than a threshold value, and at least one additional vehicle status information is present, otherwise, determining that the activation conditions are not met. Adding additional vehicle status information as a condition for activating the warning light device can further reduce the risk of false activation of the warning light device. Advantageously, the activation conditions may be met when three, four, five or all of the aforementioned status information is received. Preferably, the activation conditions can be met when the contact information and the speed information are present, the speed information indicates a non-zero vehicle speed below a threshold value and the following information is present: the closed doors information, optionally the driver seat belt fastened information and / or the automatic gearbox position information, preferably the driver seat belt fastened information.More preferably, the activation conditions can be met when the contact information and the speed information are present, the speed information indicates a non-zero vehicle speed below a threshold value and the following information is present: the closed doors information, the assisted driving or autonomous driving information, optionally the driver seat belt fastened information and / or the automatic gearbox position information, preferably the driver seat belt fastened information. The alert system according to the invention may further comprise at least one obstacle sensor, capable of detecting the presence of an obstacle around the vehicle and connected to the control system. The control system may then be configured, in particular programmed, to: (a) receiving from the at least one obstacle sensor information on the presence of an obstacle or information on the absence of an obstacle, (b) determining that activation conditions are met and, when they are fulfilled, select a first illumination mode when obstacle presence information is received and a second illumination mode when obstacle absence information is received, (c) activating the at least one light warning device according to the selected illumination mode when activation conditions are met. This makes it possible to define different illumination modes depending on the presence or absence of a person or other person in the immediate vicinity of the vehicle. Thus, when an obstacle is detected, the first mode can be brighter and / or have a faster light signal emission frequency than the second mode in order to attract more attention of a person located in the immediate vicinity of the vehicle to the latter's movement. In one embodiment, the at least one light warning device may be chosen from a device for projecting a warning signal onto the ground near the vehicle, for example in front of or behind it, and at least one signal light of the vehicle. The at least one light warning device may in particular be at least one signal light of the vehicle, for example chosen from a flashing light and a brake light. In this embodiment, the control system can then further be configured, in particular programmed, to, (b) determining that the activation conditions are met, and optionally, when they are met, selecting an illumination mode corresponding to a specific ignition frequency based on at least one vehicle status information present, (c) activating the at least one light warning device and intermittently lighting the at least one signal light according to a determined frequency, optionally according to the frequency of the selected illumination mode when the activation conditions are met. This makes it possible to adapt the visual alert according to present status information, in particular status information which may contain information on the upcoming maneuver of the vehicle, for example information on the position of the gearbox, assisted driving or autonomous driving information containing information on the upcoming maneuver of the vehicle. Alternatively, the at least one light warning device may be a device for projecting a warning signal onto the ground. The control system may then be further configured, in particular programmed, to: (b) determining that the activation conditions are met, and, when met, selecting an image from a plurality of images based on at least vehicle status information present, (c) activating the at least one light warning device and the ground display of the selected image when the activation conditions are met. This makes it possible to choose an image based on at least one piece of status information present, in particular status information that may contain information on the upcoming maneuver of the vehicle, for example information on the position of the gearbox, assisted driving or autonomous driving information containing information on the upcoming maneuver of the vehicle. For example, it is possible to choose an image from an image of a danger sign and an image indicating a direction of movement of the vehicle, for example an arrow, or any other image. The at least one light warning device may comprise light-emitting diodes. In particular, when it is a ground projection device, this makes it possible to avoid injuring the eyes of people around the vehicle. The invention is particularly applicable to any vehicle with a thermal or electric engine or to any hybrid vehicle. The invention relates in particular to a motor vehicle comprising: - an electronic control unit capable of generating at least two pieces of vehicle status information, including contact information, corresponding to a started state of the vehicle in which the vehicle engine is started or ready to start, and vehicle travel speed information, and optionally at least one additional piece of vehicle status information chosen from (iii) closed doors information corresponding to a state of the vehicle in which all the doors are closed, (iv) driver seat belt buckled information corresponding to a state of the vehicle in which the driver's seat belt is fastened, (v) assisted driving or autonomous driving information corresponding to a state of the vehicle in which the vehicle is operating in an assisted driving mode or in an autonomous mode, (vi) automatic gearbox position information, and - an alert system according to the invention, the control system of which is connected to the electronic control unit, and wherein the at least one light warning device of the warning system is mounted on a bodywork or structural element of the vehicle in a position in which the light signal it emits is visible from outside the vehicle. In particular, the at least one light warning device may be chosen from a light warning device mounted at the front of the vehicle and a light warning device mounted at the rear of the vehicle. For example, at least two light warning devices may be provided, at least one at the front of the vehicle and at least one at the rear of the vehicle. The invention is now described with reference to the accompanying non-limiting drawings, in which: [Fig. 1] schematically represents a motor vehicle according to one embodiment of the invention. [Fig.2] represents a flowchart of operation of the control system according to one embodiment. [Fig.3] schematically represents a vehicle in a parking space ready to reverse. [Fig.4] schematically represents a vehicle stopped in traffic, ready to move forward. [Fig. 5a, 5b, 5c] each schematically represent a vehicle in a parking space ready to reverse in a specific direction indicated by an arrow of the corresponding shape. In this description, the terms front, rear, refer to the forward and rear directions of the vehicle, The different embodiments described with reference to the figures can be combined. [Fig. 1] schematically represents a motor vehicle 1 which may be a vehicle with a thermal engine, a vehicle with an electric motor or a hybrid vehicle comprising a thermal engine and at least one electric motor. The vehicle 1 conventionally comprises an electronic control unit 2 (ECU 2) which controls the vehicle components to which it is connected. The ECU 2 is capable of generating at least two pieces of vehicle status information, including contact information Inf(i) and vehicle travel speed information Inf(ii), The contact information Inf(i) corresponds to a started state of the vehicle in which the vehicle engine is started or ready to start. It is typically generated when a combustion engine is started or when an electric motor is ready to start. The travel speed information Inf(ii) is generated as soon as the vehicle is moving. This is information giving the value of the vehicle's travel speed, for example based on an engine rotation speed, a vehicle speed sensor or other. The ECU 2 can also generate at least one additional vehicle status information such as closed doors information Inf(iii) corresponding to a vehicle status in which all the doors are closed, driver seat belt information Inf(iv) corresponding to a vehicle status in which the driver's seat belt is fastened, assisted driving or autonomous driving information Inf(v) corresponding to a vehicle status in which the vehicle is operating in an assisted driving mode or in an autonomous mode and / or automatic gearbox position information Inf(vi). The closed doors information Inf(ili) can be generated based on a signal generated by vehicle sensors located at the vehicle doors. Similarly, the seat belt buckled information Inf(iv) can be generated by a sensor capable of detecting that a seat belt is buckled. These different sensors are common and will not be described in detail. The assisted or autonomous driving information Inf(v) can be generated when the user activates the assisted or autonomous driving function, for example by pressing a button. Automatic gearbox position information Inf(vi) can be generated when a forward or reverse position is activated by moving the automatic gearbox lever. According to the invention, the vehicle | comprises a movement warning system 10 comprising at least one, here two, light warning devices 12a, 12b and a control system 14. The light warning device(s) 12a, 12b are mounted on a bodywork or structural element of the vehicle in a position in which the light signal that it emits is visible from outside the vehicle. They may for example be mounted on a bumper or a structural element supporting the bumper, the latter then having a recess or a translucent wall to allow the light signal emitted by the light warning device to pass through. The invention is of course not limited by the number of light warning devices. In particular, at least one light warning device 12a mounted at the front of the vehicle and at least one light warning device 12b mounted at the rear of the vehicle may be provided. Each light warning device 12a, 12b can be chosen from a device for projecting a warning signal onto the ground 3 near the vehicle (as shown [Fig.1]) and at least one vehicle signal light. The device for projecting a ground warning signal typically comprises light sources, preferably light-emitting diodes (LEDs). The light sources are typically connected to a printed circuit having a controller comprising a circuit for controlling the light sources to activate and deactivate them and consequently the projection device. Filters may optionally be positioned in front of the light sources. The light sources, and optionally the filters, produce visible light, such as white light or another color. These different elements are generally positioned inside a housing. The light warning device 12a, 12b may also be at least one signaling light of the vehicle, for example a flashing light and / or a brake light. This type of light may also comprise light-emitting diodes. In general, will simultaneously activate both rear turn signals, both front turn signals and / or both brake lights. When one of the two brake lights is used as a reversing light, it is better to use both rear turn signals. The control system 14 is connected to the at least one light warning device 12a, 12b to control it. It is further connected to the ECU 2 of the vehicle, as shown schematically in [Fig. 1]. The control system 14 may comprise computing means such as a processor, for example a microprocessor, a microcontroller or the like, in particular programmed to implement steps (a) to (c). Communication means, optionally bidirectional, may be provided between the control system, the light warning device(s) 12a, 12b, the ECU 2, possibly one or more obstacle sensors of the vehicle. The processor(s) may have storage means which may be a random access memory (RAM), an electrically erasable programmable read-only memory (EEPROM), a flash memory, an external memory or the like. These storage means may, among other things, store received data, a control model, data tables and one or more computer programs. The control system 14 may or may not be part of the ECU 2. The alert system 10 according to the invention may further comprise one or more obstacle sensors, two 16a, 16b in the embodiment of [Fig. 1], capable of detecting the presence of an obstacle around the vehicle and connected to the control system 14. This obstacle sensor may be a camera configured to acquire images of the environment of the vehicle and detect objects or people present around the vehicle on the basis of the acquired images, a radar configured to emit electromagnetic waves, receive the reflected waves and detect objects or people present around the vehicle on the basis of the received waves, or any other type of sensor making it possible to detect an obstacle in the immediate environment of the vehicle. The operation of the motion alert system is described in detail with reference to Figures 2 to 5. According to the invention, the control system is configured, in particular programmed, to implement the steps (a) to (c) previously described, for example as represented in the flowchart of [Fig.2] and comprising the steps described below. We begin with an initialization step STEPO during which the at least one light warning device is deactivated, for example via a deactivation signal Sdesact transmitted by the control system 14 to the at least one light warning device. This initialization step is for example implemented when the driver starts the vehicle. The control system 14 then proceeds to the next step, STEP1, during which it implements step (a) and checks with the ECU 12 the availability of the contact information Inf(i) and the speed information Inf(ii) and acquires this information when it is present. Optionally, during this step, the control system can check the availability of one or more of the information Inf(iii), Inf(iv), Inf(v) and / or Inv(vii) previously described, and acquire it when it is present. Generally, the control system 14 checks the availability of status information that is part of the activation conditions, for example by checking the availability of information listed in a data table containing the information whose presence is necessary to fulfill the activation conditions. For example, in the case of a vehicle in manual driving mode, the information required to meet the activation conditions may be as follows: Inf(i): contact started, Inf(ii): vehicle speed, Inf(iii): closed doors, Inf(iv): driver's seat belt fastened, In the case of a vehicle that can operate in an assisted driving or autonomous driving mode, the information required to meet the activation conditions may be as follows: Inf(i): contact started, Inf(ii): vehicle speed, Inf(iii): closed doors, Inf(iv): driver's seat belt fastened, Inf(v): assisted driving or autonomous driving function activated, The Inf(vi) position information of an automatic gearbox can be used in addition to or instead of one of the Inf(iii), Inf(iv) and Inf(v) information. However, the use of this Inf(vi) information as an activation condition is not preferred because the warning system then loses anticipation. The control system 14 then proceeds to step STEP2 during which it implements step (b) and determines that activation conditions are met when the information Inf(i) and Inf(ii) are present and the speed information indicates a non-zero vehicle speed less than a threshold value: O <In{(ii)<S, et optionnellement lorsque la ou les informations d’état supplémentaires faisant partie des conditions d’activation est / sont présentes. La valeur seuil S est par exemple de 3 km / heure. Dans l’affirmative, le système de commande 14 passe à l'étape STEP3. Dans la négative, le système de commande détermine que les conditions d'activation ne sont pas remplies et passe à l’étape STEP4. In step STEP3, the control system implements step (c) and activates the at least one light warning device 12a, 12b, for example by generating an activation signal Sact which is transmitted to the at least one light warning device 12a, 12b. The control system 14 then repeats steps STEP1 and STEP2 and keeps the at least one light warning device 12a, 12b activated as long as the activation conditions are met, and deactivates it otherwise. In step STEP4 (implementation of step (c) when the activation conditions are not met), the control system deactivates (or keeps deactivated) the at least one light warning device 12a, 12b, for example by generating the deactivation signal Sdesac, and then returns to step STEP1. Between steps STEP2 and STEP3, or optionally integrated into step STEP2, an optional step STEPS may be provided during which the control system 14 makes a selection. This selection may include: the selection of an illumination mode when the vehicle includes one or several obstacle sensors, in the case, during step STEP1 the system of command 14 also receives presence information from the sensor(s) obstacle or absence of obstacle which is used during the STEPS step for select the illumination mode corresponding to the sensor information received. The control system can then store a table of modes of illumination, corresponding for example each to a brightness, a color and / or a specific illumination frequency, and indicating which mode illumination must be selected based on the information received from the sensor, the selection of an illumination mode corresponding to a frequency specific ignition based on at least one status information of the vehicle present when at least one light warning device is on least one traffic light. The control system can then store an illumination mode table indicating which illumination mode should be selected based on received status information, for example an in- gearbox position training, driving information assisted or autonomous driving containing information on the maneuver coming from the vehicle, selecting an image from a plurality of images based on at least vehicle status information present when at least one device light warning system is a ground projection device. The system command can then store a table of images to display and indicating which image should be selected based on the received status information, for example, information on the position of the gearbox, information assisted driving or autonomous driving containing information on the upcoming maneuver of the vehicle. The STEPS selection step can notably make several selections, including the first and second described above, or the first and third described above. In the case of a ground display device, it is thus possible to display a signal on the ground in front of or behind the vehicle. One or more signals can be displayed, the brightness and / or the color and / or the display frequency of the signal can also be modified. The control system 14 can for example be configured (in particular programmed) to activate, during step (c) (STEP3 of the flowchart) the display on the ground of a single signal, for example a signal similar to a danger sign, as shown [Fig. 3] for a vehicle reversing out of a parking space, or a signal similar to an arrow, as shown in [Fig. 4] for a vehicle momentarily stopped in forward gear, for example in a traffic jam. Alternatively, the control system 14 may be configured (programmed) to activate, during step (c) (STEP3 of the flowchart), the display on the ground of an image chosen from a bank of images, for example as a function of the status information received. Thus, it will be possible to provide between the steps STEP2 and STEP3 previously described (or integrated into step STEP2) a selection step STEPS during which the control system 14 selects an image from a plurality of images as a function of at least one item of vehicle status information present, as described above. During step STEP3, it is then the selected image that is projected on the ground. In particular, when assisted driving information or autonomous driving information is present, the upcoming maneuver of the vehicle can be known.It is then possible to select the image to be displayed depending on the vehicle maneuver, such as for example an arrow indicating the direction of the upcoming maneuver of the vehicle, as shown in figures Sa, 5b, 5c, or indicating its possible restart during a momentary stop in forward gear (in a traffic jam situation for example), as shown [Fig.4]. The control system 14 can in particular be configured (in particular programmed) to, during step (c) (STEP3 of the flowchart), display the signal projected on the ground continuously or discontinuously with a specific signal transmission frequency. When the at least one light warning device comprises signal lights, the brightness and / or the display frequency of the signal can be modified as desired. The control system can be configured, in particular programmed, to, during step (c) (STEP3 of the flowchart), activate it and intermittently switch on the signal lights according to a determined frequency. This produces a flashing of these lights which attracts the attention of road users. external to the vehicle. It is preferable to choose a different ignition frequency from that usually used for flashing lights. It may be provided to configure (program) the control system 14 so that, during step (b) (STEP2 or STEPS of the logic diagram), an illumination mode corresponding to a specific lighting frequency as a function of at least one piece of vehicle status information present may be selected. The control system is then configured (programmed) so that, during step (c) (STEP3 of the logic diagram), the at least one light warning device is activated and the signal lights are switched on intermittently according to the frequency of the selected illumination mode. In all cases, when one or more obstacle sensors are present, the control system can be configured, in particular programmed, to, during step (b) (STEP2 or STEPS of the logic diagram), select a first illumination mode when information on the presence of an obstacle is received and a second illumination mode when information on the absence of an obstacle is received. These illumination modes can correspond to the emission of light signals of different intensities and / or different colors and / or with a different signal emission frequency. For example, the first mode can correspond to a higher light intensity than the second mode and / or a brighter color and / or a shorter display frequency (therefore a faster discontinuous display) than the second display mode. Note that a vehicle may have a light warning device which is a device for projecting a warning signal onto the ground near the vehicle and another light warning device which is at least one signal light on the vehicle. The alert system according to the invention thus allows users outside the vehicle to clearly identify the activity of the vehicle equipped with the invention, in particular even before these users are detected by any obstacle sensors.

Claims

Claims

1. Alert system (10) for the movement of a motor vehicle (1) including: - at least one light warning device (12a, 12b) capable of emitting a light signal when activated, - a control system (14) of the at least one warning device light capable of being connected to an electronic control unit (2) of the vehicle and configured for: (a) check with the electronic control unit (2) availability of at least two vehicle status information, including (i) one in- contact formation, corresponding to a started state of the vehicle in which the vehicle engine is started or ready to start, and (ii) a vehicle speed information, and acquire them when present, (b) determining that activation conditions are met when contact information and speed information are present and when the speed information indicates a vehicle speed not zero less than a threshold value, otherwise determine that the conditions activation conditions are not met and repeat step (a), (c) activating the at least one light warning device (12a, 12b) when the activation conditions are met, repeat steps (a) and (b) and keep at least one light warning device activated as long as the activation conditions are met, otherwise deactivate it.

2. Alert system (10) according to claim 1, characterized in that the control system is configured to: (a) check with the electronic control unit for availability of at least one additional vehicle status information selected among (iii) closed door information corresponding to a state of the vehicle in which all doors are closed, (iv) information of fastened driver's seat belt corresponding to a state of the vehicle in which the driver's seat belt is fastened, (v) information from assisted driving or autonomous driving corresponding to a state of the vehicle in which the vehicle is operating in a driving mode assisted or in an autonomous driving mode, (vi) information from position of an automatic gearbox, and acquire it when it is present, {b) determining that activation conditions are met when contact information and speed information are present, the speed information indicates a non-zero vehicle speed in- lower than a threshold value, and at least one status information of the additional vehicle is present, otherwise, determine that the activation conditions are not met.

3. Alert system (10) according to claim 1 or 2, characterized in that that it comprises at least one obstacle sensor (14a, 14b), capable of detect the presence of an obstacle around the vehicle and connected to the system of command (12), and in that the control system (12) is configured to: (a) receiving from the at least one obstacle sensor (14a, 14b) an in- formation of presence of an obstacle or absence information obstacle, {b) determining that activation conditions are met and, when they are filled, select a first illumination mode when obstacle presence information is received and a second illumination mode when information of absence of obstacle is TeCuEe, {c) activating the at least one light warning device (12a, 12b) according to the illumination mode selected when activation conditions are met fulfilled. |Claim 4] Alert system (10) according to any one of claims 1 to 3, characterized in that the at least one light warning device (12a, 12b) is chosen from a device for projecting an alert signal onto the ground near the vehicle and at least one traffic light of the vehicle.

5. Alert system (10) according to claim 4, characterized in that the at at least one light warning device (12a, 12b) is at least one light vehicle signaling chosen from a flashing light and a running light braking.

6. Alert system (10) according to claim 4 or 5, characterized in that that the at least one light warning device (12a, 12b) is at least a [signaling system and in that the control system (14) is in besides configured for, (b) determine that the activation conditions are met, and option- ally, when they are filled, select a mode illumination corresponding to a specific ignition frequency in function of at least one vehicle status information present, {c) activating the at least one light warning device (12a, 12b) and intermittently turn on at least one traffic light according to a determined frequency, optionally according to the frequency of the illumination mode selected when activation conditions are met filled,

7. Alert system (10) according to claim 4, characterized in that the at at least one light warning device (12a, 12b) is a device of projection of a warning signal on the ground and in that the system of command (14) is further configured to: {b) determining that the activation conditions are met, and, when filled, select one image from a plurality images based on at least one vehicle status information present, {c) activating the at least one light warning device (12a, 12b) and the ground display of the selected image when the conditions activation conditions are met.

8. Alert system (10) according to any one of claims 1 to 7, characterized in that the at least one light warning device includes light-emitting diodes.

9. Motor vehicle (1) comprising: - an electronic control unit (2) capable of generating at least two in- vehicle condition information, including (1) contact information, cor- corresponding to a started state of the vehicle in which the engine of the vehicle is started or ready to start, and (ii) information of vehicle movement speed, and optionally at least one in- additional vehicle condition training selected from (iii) an in- formation of closed doors corresponding to a state of the vehicle in which all doors are closed, (iv) seat belt information buckled driver corresponding to a state of the vehicle in which the driver's seat belt is fastened, (v) driving information assisted or autonomous driving corresponding to a state of the vehicle in which the vehicle operates in an assisted driving mode or in an autonomous mode, (vi) position information of a box of automatic speed, and - an alert system (10) according to any one of claims 1 to 8 whose control system (14) is connected to the electronic control unit- electronics (2), and wherein the at least one light warning device (12a, 12b) of the warning system (10) is mounted on a bodywork element or structure of the vehicle in a position in which the light signal that it emits is visible from outside the vehicle.

10. Motor vehicle (1) according to claim 9, characterized in that the at least one light warning device (12a, 12b) is chosen from a luminous warning device mounted on the front of the vehicle and a device warning light mounted on the rear of the vehicle.