FR2909626A3 - Vehicle driving assistance system, has management unit arranged for providing driving assistance commands and applications based on geographical, temporal and position information, where position information is changed in preset repository - Google Patents

Abstract

The system (10) has a management unit (1) arranged for providing driving assistance commands and applications (9) e.g. fuel consumption optimization, based on local geographical information (3) e.g. cartographical information, temporal information (4) e.g. traffic information, and vehicle's position information (2) e.g. Galileo information. The position information is changed in a preset repository. The unit is arranged for selecting the information (3) stored in an embarked data base (5) based on the changed information for providing the applications by considering the information (3).

Description

The invention relates to a system for assisting the driving of a

  vehicle. Driver assistance systems are currently an important area of innovation, as part of an increasingly demanding security policy.

  A driver assistance system usually comprises electronic management means arranged to provide driving assistance applications and / or commands, based on information collected elsewhere. The information collected typically comes from different sensors fitted on GMP systems, chassis, bodywork, lighting, etc. The driver assistance system must then manage all of this information in a centralized manner, typically in an on-board computer, thus requiring resources, processing means and consequent calculations.

  The object of the invention is notably to propose an alternative or an addition to this type of system, in particular by making it possible to process new types of information. For this purpose, and with reference to FIG. 1, the invention proposes a system for assisting the driving of a vehicle comprising management means 1 designed to provide applications and / or assistance commands to the vehicle. driving 9 based on information collected 2-3-4, the collected information comprising vehicle position information 2 recorded in a predetermined reference frame. The position information 2 is advantageously taken from satellite 8, such as GPS or Galileo information, and received by the vehicle via reception means (antenna, for example) of electromagnetic waves (radio waves, for example). This position information 2 is then conveyed to the system 10. Furthermore, the system advantageously comprises an embedded database or model 5 storing geographic information 3.

For example, the geographic information 3 may include at least one of the following information: map information, route information, terrain information, indications of particular places (eg town hall, petrol stations, tolls, theaters, etc.), advice or warnings driving at certain specified locations, state of the road, or Said management means 1 are further advantageously arranged to select geographical information 3 in said base 5, according to the position information 2 taken, so as to provide applications and / or driving assistance commands 9 taking into account local geographic information. Optionally, a speed and / or an acceleration of the vehicle is calculated from a recent history of successive positions of the vehicle, associated with the passage times at these positions, which may give rise to new driver assistance applications 9.

From this local position 2 and geographical information 3, the management means 1 will thus be able for example to execute the following applications, from driving assistance functions 8: GMP management: - optimization of the fuel consumption ; Optimizing the management of an automatic gearbox (automatic downshifting or optimum gear selection); recommended positioning in case of breakdown or accident; chassis management: predictive braking of the vehicle (preventative to the accident) knowing the upcoming road characteristics; management of the vehicle's shock absorbers according to the characteristics of the journey and the road; modification of the management assistance according to the information of topology of the road and position of the vehicle; 2909626 3 - optimization of the management of lights and / or horns according to navigation information mapping and location of the vehicle; warning crossing by a pictogram on the dashboard or the display according to navigation information mapping and location of the vehicle; - reminder signaling by pictogram on the dashboard or a display based on navigation information mapping and location of the vehicle, and from a database of 5 signaling; -restriction access control (e.g. unlock / lock the 10 opening) according to mapping navigation information and vehicle location; automatic opening of the fuel filler in petrol station according to information of particular places and location of the vehicle. The initial functions or modules used for the collection of position 2 and geographical information 3 according to the invention are substantially similar to those of a conventional navigation system, such as for example a GPS system. However, in the context of the invention, these modules 2-3 are not part of equipment independent of the driver assistance system 10, as they are in the conventional navigation systems. Indeed, the architecture of known navigation systems typically includes peripheral equipment (screens, keyboard, radio, CD changer, etc.) expensive and highly impacting. The interface with the vehicle itself is however either zero or strongly limited. In addition, the sizing of the resources of conventional navigation systems is important, since it is controlled by the services of guidance, audio video reproduction and user interface. On the contrary, the use of these modules in driver assistance applications 9 can save the man-machine interfaces and is therefore much less resource-intensive, the latter being able to reduce to the strict minimum necessary (memory live to store the received position information 2 and ROM to store the geographic information 3). Integration into the vehicle can therefore be less complex and less restrictive in volume.

Furthermore, these modules are integrated, in the context of the invention, into the driver assistance system 10 to serve the applications and / or driving assistance commands 9, providing the information necessary for the implementation of these. They therefore have a function similar to that of hardware sensors monitoring the physical quantities of the vehicle (pressure in the cylinders, speed, brake wear, etc.). The system 10 does not necessarily include audio, telecommunication, keyboard or screen functions, but may be equipped with it as an option according to very basic versions - eg peripherals already in place 15 (dashboard or display radio, radio satellite) or more complex. These elements are not necessarily integrated into the vehicle. The information collected may also include temporal information 4, ie information changing over time.

This time information 4 may include one or more of the following information: time information, traffic information, meteorological information. For this purpose, the system architecture further includes a temporal information reception module, such as traffic information (TMC) and / or schedule 6 and / or event and / or meteorological information. The traffic and weather information is advantageously received by air 7 (radio waves) and the time information can be retrieved from a clock 6 internal to the vehicle or can be received by air 7. The management means 1 of the system can be arranged to select some of the received time information 4 based on the position information 2 to provide driving assistance applications and / or commands 9 taking into account local time information. The management means 1 can then be arranged to trigger an action in a list of predetermined actions according to the local information. The management means 1 of the system can therefore receive one or more of the following information: absolute position 2 of the absolute vehicle; • the spatial road context 3 around the vehicle (type of road, superelevation, proximity to a turn, a school, an accident zone, etc.); • temporal road context 4 around the vehicle (weather, traffic information, nightfall depending on the time); • routing law if guidance in progress.

The management means 1 then use this information to trigger the execution of applications and / or commands 9, with or without the use of said computing resources, and from driving assistance functions 8. exhaustive, a list of applications and / or commands 20 made possible in a driver assistance system 10 incorporating a reception of one or more of the following temporal information: - announcements of traffic information on the dashboard or display to from traffic information received over the air; a list of current events around the current position displayed in the dashboard or display, according to map information, vehicle location and local event time information; - driving advice or control of safety equipment (lighting, braking, trajectory control, distress alarms, etc ...), according to the local weather.

The architecture of a driver assistance system 10 according to the invention comprises or consists of: management means 1 able to calculate in real time, with a RAM resource; • a database storing geographic information, such as cartographic, environmental, context information about the road network, urban environment, etc. A data storage resource (for example a flash memory, e.g. of several tens of GB); And • an interface to the vehicle bus (s) to communicate with vehicle elements (display screen, engine control, steering, braking, lighting, etc.). In addition, this architecture optionally includes one or more of the following elements: a geographic location module (sensor and processing system); A temporal information reception module, of the time-domain type, such as traffic information (TMC), and / or time and / or event and / or meteorological information; • a standardized external data interface (for example a Bluetooth interface); This driver assistance system 10 may for example be implemented by an on-board computer integrated into the vehicle. The system 10 may also allow a software update of its configuration or options stored in libraries. The system 10 can also receive other information than that according to the invention, such as for example information from vehicle part monitoring sensors. The management means 1 are then able to manage all of this information, and possibly to merge them together, and / or to compare them with each other to provide a more complete assistance to driving and / or more reliable.

Claims (10)

  A driver assistance system (10) for a vehicle comprising management means (1) arranged to provide driving assistance applications and / or controls (9) based on collected information, characterized in that the collected information comprises position information (2) of the vehicle read in a predetermined frame of reference.   2. driving assistance system (10) according to the preceding claim, wherein the position information (2) is read from satellite, such as GPS or Galileo information.   3. Driving assistance system (10) according to one of the preceding claims, characterized in that the management means (1) are further arranged to select geographical information (3), stored in a database (5) onboard, based on the position information (2) found, and to provide applications and / or driving assistance commands (9) taking into account local geographical information.   4. Driving assistance system (10) according to the preceding claim, characterized in that the geographic information (3) comprises at least one of the following information: map information, route information, terrain information, indications of particular places (eg town hall, petrol stations, tolls, theaters, etc.), advice or driving alerts to certain places, state of the roadway.   5. Driving assistance system (10) according to one of the preceding claims, characterized in that the collected information comprises in addition to time information, ie information changing over time.   Driving assistance system (10) according to the preceding claim 5, characterized in that the management means (1) are further arranged to select some of the time information (4) as a function of the position information (2). ) to provide driving assistance applications and / or commands (9) taking into account local time information. 10   A driving assistance system (10) according to one of the two preceding claims, characterized in that the time information (4) comprises one or more of the following information: time information, traffic information, meteorological information.   8. driving assistance system (10) according to one of the preceding claims, characterized in that it further comprises a user interface.   Driving assistance system (10) according to one of the preceding claims, characterized in that the management means (1) provide one or more of the driving assistance applications and / or commands (9). ): - announcements of traffic information on the dashboard or vehicle display; A list of current events around the current position displayed in the dashboard or display; - GMP management, such as, for example, optimizing fuel consumption or optimizing the management of an automatic gearbox (automatic downshifting or gear selection); - recommended positioning in case of breakdown or accident; - chassis management: predictive braking of the vehicle (preventive to the accident); management of the shock absorbers of the vehicle; modification of the assistance to the management; 5 - management of lights and distress alarms; warning crossing appearing in the dashboard; signaling reminder by a pictogram on the dashboard or a display; restriction access control; 10 automatic opening of the gas door at a petrol station.   Vehicle equipped with a driving assistance system (10) according to one of the preceding claims.