Method for presenting information upon starting an automotive vehicle

A method for presenting information upon starting an automotive vehicle includes at least one step in which various parameters associated with the vehicle are verified. Also included is a step in which a particular light beam is projected onto a specific area of the passenger compartment of the vehicle when the state of a plurality of verified parameters allows the vehicle to be started.

The invention concerns the field of lighting and/or signaling, in particular for automotive vehicles. It pertains more specifically to the field of interior lighting and to that of presenting information to the occupants of the vehicle, in particular information relating to the risk-free driving of the vehicle.

Modern vehicles incorporate a multitude of diagnostic tools for diagnosing the operating state of critical components of the vehicle. The driver can thus see information on his or her instrument panel when the tire pressure is insufficient, the oil level is too low, the seat belts are not buckled, etc. This information consists of warning lights indicating that action is to be taken on a given component in order to ensure the safety of the driver and of the passengers of the vehicle. The totality of the information is notably collected together on the instrument panel in front of the driver, the latter having to check whether warning lights are present or absent before starting the vehicle. A result of this is that the passengers of the vehicle are not able to learn of a potential situation that could jeopardize the safe driving of the vehicle. On certain vehicles, an acoustic alarm is used to announce the presence of such a warning light and the need for the driver to look at the instrument panel. Such an acoustic alarm is effective; however, it is not pleasant for the occupants of the vehicle.

In this context, a subject of the invention is a method for presenting information upon starting an automotive vehicle, in which various parameters associated with the vehicle are verified, and in which a particular light beam is projected onto a specific area of the passenger compartment of the vehicle when the state of a plurality of verified parameters allows said vehicle to be started.

Thus, the driver is given information summarizing various operating states or conditions of the road scene in which the vehicle must be engaged. It is advantageous for said specific area to be, in particular, separate from the instrument panel, in order to provide information to the occupants of the vehicle which is not drowned out by the stream of information available on the instrument panel and which is furthermore visible by all occupants of the vehicle, including both front and rear passengers.

According to one feature of the invention, a first particular light beam is projected onto a first specific area of the passenger compartment of the vehicle when the state of a plurality of the verified parameters forming a first functional group allows said vehicle to be started, and a second particular light beam is projected onto a second specific area of the passenger compartment of the vehicle when the state of a plurality of the verified parameters forming a second functional group allows said vehicle to be started. The first specific area and the second specific area may be lit up in successive sequences.

Thus, a specific projection area is associated with information on the vehicle summarizing a certain type of verified parameters. The set of parameters to be verified is split into a plurality of functional groups which are considered to be separate sets, each set providing, after analysis, summarized information in favour of or against starting the vehicle. It could be advantageous to choose the specific area onto which information summarizing a group of particular parameters is projected depending on the type of corresponding parameters: information relating to the road scene and, in particular, to the absence of hazards in the blind spot could be the subject of a projection on the left windscreen pillar, while information on the operating state of the drive, braking, steering, etc. elements could be the subject of a projection on the dashboard, and information on whether the doors have been locked correctly could be the subject of a projection on the driver's door handle. These application areas for the projection of information have been given by way of example and may be modified as required without departing from the scope of the invention.

Provision may also be made for a first alternative light beam, separate from said particular light beam, to be projected onto said projection area, or in proximity thereto, when one or more of the verified parameters does not allow said vehicle to be started. It is additionally possible for a second alternative light beam, separate from said particular light beam and from said first alternative light beam, to be projected onto said projection area, or in proximity thereto, when each of the verified parameters allows said vehicle to be started, and at least one of these parameters requires particular attention on the part of the driver.

A control module may receive information arising from a plurality of sensor means configured to verify one of the various parameters associated with the vehicle, said control module comparing each item of this information with a database specific to each verified parameter and deducing therefrom a type of light beam to be projected.

According to a series of features, taken alone or in combination, in which the verified parameters are both parameters internal to the vehicle and parameters external to the vehicle, provision may be made for:the external parameters to be verified by sensors on board the vehicle and configured to detect a situation of a road scene in which the vehicle is engaged;one of the external parameters to be in particular the presence of one or more road users in the blind spot of the vehicle;the internal parameters to be verified by sensors on board the vehicle and configured to detect an operating state of the vehicle;at least some of the internal parameters to relate to active or passive safety means of the vehicle;at least some of the internal parameters to relate to drive, braking, steering, etc. elements of the vehicle.

According to a first variant embodiment of the method according to the invention, provision may be made for a light beam to be projected onto a specific area of the passenger compartment from a second area of this passenger compartment, separate from said specific area. In particular, a light beam may be projected onto the front window pillar, or onto a portion of the windscreen, from the interior central rear-view mirror or from an area close to the rear-view mirror.

According to a second variant embodiment of the method according to the invention, a light beam may be projected onto a specific area of a structural element of the passenger compartment, from the interior of said structural element.

According to other features of the invention, provision may be made for:the various parameters to be verified when the speed of the vehicle is below a threshold value, so as to be able to project a light beam relating to permission to start the vehicle as soon as an acceleration is detected;the various parameters to be verified in real time.

An automotive vehicle is equipped with at least one interior lighting device for illuminating its passenger compartment2, particular in that it comprises means4for projecting a light beam6configured to present information8to the occupants of the vehicle relating to the good working order of the vehicle before it is started and taken out onto the road.

These means take part in implementing a method for presenting information in which information received from various sensors placed in or around the vehicle is summarized in order to check that parameters10of the vehicle, which correspond to this information, are capable of allowing completely safe driving. Such a method allows the result of this summarization to be displayed to the occupants, and in particular to the driver, by means of a luminous display, which is advantageously projected into a specific area12that can be seen by a plurality of occupants of the vehicle and, in particular, is separate from the instrument panel14positioned facing the driver.

The verified parameters10may be both parameters internal to the vehicle and parameters external to the vehicle. In the latter case, it is understood that the external parameters may be verified by sensors embedded in the vehicle or by external elements that are capable of communicating with the vehicle. These external parameters in particular relate to a situation of the road scene in which the vehicle is engaged and, for example, to the presence of one or more road users in the blind spot of the vehicle.

The internal parameters are verified by sensors which are on board the vehicle and configured to detect a respective operating state of the vehicle. At least some of the internal parameters may relate to active or passive safety means of the vehicle, or to drive, braking, steering, etc. elements of the vehicle.

The set of detected information8, relating to each parameter to be verified10, is processed by a control module16that compares, in one or more comparison steps18, each item of this information8with a database that is specific to each verified parameter and which summarizes all of these comparisons in order to deduce therefrom whether a light beam6must be projected in order to notify the occupants of the vehicle that the vehicle is capable of being started.

According to one variant embodiment, the control module16is able to determine various operating states of the vehicle by means of this step18of comparing the verified parameters with reference values, and the control module therefore deduces from this step which type of beam6should be projected in order to correctly notify the occupants.

Stated otherwise, the following complimentary cases may be envisaged:when one or more of the verified parameters does not allow said vehicle to be started, a first alternative light beam20, separate from the light beam6projected when all of the verified parameters are acceptable, may be projected onto the same specific projection area12as that of the latter, or in proximity to this same projection area: this first alternative beam20, being for example red while the light beam projected when all of the verified parameters are acceptable is green, notifies the driver and each of the occupants that the vehicle should not be started.when each of the verified parameters allows said vehicle to be started and at least one of these parameters requires particular attention on the part of the driver, a second alternative light beam22, separate from said light beam6projected when all of the verified parameters are acceptable and separate from the first alternative light beam projected when at least one verified parameter is unacceptable for driving, can be projected.

This possibility has been illustrated inFIG. 2such that the projection means4are configured to emit a particular light beam6, a first alternative light beam20or a second alternative beam22depending on the result of the summarization carried out by a computing module23of the control module.

In this first embodiment, the light beam6is projected onto the same area of the passenger compartment each time the vehicle is started. The set of parameters to be verified10is processed by the control module on the basis of values detected by sensor means and a step18of comparing each of these parameters with threshold values is successively carried out, followed by the totality of the data from these tests being summarized by the computing module23of the control module16, resulting in a datum giving authorization for the vehicle to be started. It is understood, in particular when the information delivered by the projected beam is information apprising of a state of the vehicle that does not ensure complete safety of the occupants, that it may be advantageous for the projected information to be visible by all in the passenger compartment, and this therefore explains the choice of a specific beam projection area12that is visible by all, for example on the ceiling24, on the windscreen26, on a pillar28of the latter or on each of the door handles30.

According to a second embodiment, illustrated in particular inFIG. 1and inFIG. 3, the light beam may be projected onto various areas of the passenger compartment, and the choice of a given projection-bearing area may in particular be made according to the information that has been verified. The control module16is programmed to split at least some of the parameters to be verified10into a first functional group32, for example relating to the operating state of the drive, braking, steering, etc. elements of the vehicle, into a second functional group34, relating for example to the good working order of the passive safety elements, such as the buckling of the seat belts or the closing of the doors, or else into a third functional group36, relating for example to the situation of the road scene around the vehicle and the presence of road users who may or may not disrupt the starting of the vehicle. Thus, it is possible to project a first particular light beam6aonto a first specific area12aof the passenger compartment of the vehicle when the state of a plurality of the verified parameters forming a first functional group32allows said vehicle to be started, and it is possible to project at least one second particular light beam6bonto a second specific area12bof the passenger compartment of the vehicle when the state of a plurality of the verified parameters forming a second functional group34allows said vehicle to be started.

The particularity of this embodiment of the method has been illustrated inFIG. 3, in which the summarization by the computing module is carried out per functional group of parameters, so that the projection means produce a projection of a specific beam separately from the other functional groups.

In this case in which multiple areas are illuminated separately in order to show the state of various functional groups of parameters, provision may be made for the first specific area and the other specific areas to be illuminated in successive sequences.

The projection means4consist of a lighting module comprising at least one light source and one optical projection system. The source is turned on by the control module when information must be presented to the occupants of the vehicle, and the optical projection system, or the overall lighting module according to the chosen variant embodiments, is moved in order to orient the projected beam onto a given projection-bearing area. A light beam6is projected onto a specific area12of the passenger compartment from a second area38of this passenger compartment, separate from said specific area. As illustrated inFIG. 1, provision may in particular be made for this controllable lighting module to be placed in the area above the windscreen26, directly above the dashboard, for example by being integrated into the interior central rear-view mirror40or into an area close to the rear-view mirror, in order to facilitate the projection of the beam both onto the windscreen pillar28and onto at least one door handle30, or onto the ceiling24. It is noteworthy that, according to one particular embodiment of the invention, provision may be made for the information projected to the occupants of the vehicle to be information backlit onto the projection-bearing area.

As stated above, the parameters10are verified upon starting the vehicle. Thus, in the two embodiments of the method presented above, provision may also be made for this verification to take place each time the vehicle is restarted, in particular by verifying the various parameters only if a test step42makes it possible to check that the speed of the vehicle is below a threshold value. Advantageously, the various parameters are verified in real time so that the method for presenting information is responsive each time the vehicle is started or restarted.

The preceding description clearly explains how the invention makes it possible to achieve the set objectives and, in particular, to propose a method for presenting information upon starting an automotive vehicle in which the driver and the occupants of the vehicle are notified of the state of the vehicle before it is started, in particular by verifying various parameters associated with the vehicle beforehand and by projecting information summarizing the various verifications carried out individually for each of the parameters onto a specific area of the passenger compartment of the vehicle.

Of course, various modifications may be made by a person skilled in the art to the driving assistance device that has just been described by way of non-limiting example, as long as at least one light beam is implemented so as to illuminate a particular area of the passenger compartment, in particular separate from the instrument panel which is otherwise equipped with backlit indicator lights, in order to make it possible for both the driver and the other occupants of the vehicle to read the information.

In any event, the invention should not be regarded as limited to the embodiment specifically described in this document and in particular embraces all equivalent means and any technically operative combination of those means.