WO2013150230A1 - Method and device for automatically acquiring and managing road disruptions - Google Patents
Method and device for automatically acquiring and managing road disruptions Download PDFInfo
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- WO2013150230A1 WO2013150230A1 PCT/FR2013/050716 FR2013050716W WO2013150230A1 WO 2013150230 A1 WO2013150230 A1 WO 2013150230A1 FR 2013050716 W FR2013050716 W FR 2013050716W WO 2013150230 A1 WO2013150230 A1 WO 2013150230A1
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- remote server
- acquisition
- plug
- vehicle
- frame
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
- G08G1/0112—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
- G08G1/0133—Traffic data processing for classifying traffic situation
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
- G08G1/0141—Measuring and analyzing of parameters relative to traffic conditions for specific applications for traffic information dissemination
Definitions
- the present invention relates to a method of acquisition and automatic management by a remote server of data relating to road disturbances causing a slowing of vehicles on a section of a road network, commonly referred to as a plug.
- the present invention also relates to a method for communicating to a device embedded on these vehicles said disturbance information.
- the present invention aims to achieve automatically by a server, including a remote server, the real-time acquisition of the position of any plugs able to form, to persist or to resorb on a network.
- the present invention also aims to communicate the existence of such plugs to the drivers of the vehicles that are in approach of the latter, and to communicate to the drivers of vehicles that are within this plug their positioning inside thereof.
- the present invention thus relates to a method of acquisition and management by a remote server of data relating to road disturbances causing a slowing down of vehicles on at least one road section, in which
- a device embedded on a vehicle is able to transmit an information frame to the remote server
- the remote server is able to process it and to send back to the on-board device information that the latter is able to transmit to the driver of the vehicle,
- the on-board device periodically determines, from a geolocation system, an information frame,
- the on-board device calculates the acceleration to which the vehicle is subjected and sends the remote server a frame of information, in particular of the GPS type, called the "braking frame" when:
- the acceleration is negative and is greater than a first determined threshold value
- the remote server Upon receipt of the braking frame, the remote server saves the latter in a database called "brake base”.
- the remote server by comparing the information of a braking frame in progress coming from the "braking base" with the data of a "map database", can determine the section and the direction of movement. of the vehicle associated with said braking frame in progress.
- the remote server will be able to performs a filtering step to establish if said determined section is in an active zone, that is to say an area for which there is no natural slowdown, such as, for example, a toll zone . If this is not the case, it will remove, in the "braking base", the braking frame associated with the aforementioned determined section.
- the remote server will then be able to consult the "braking base” to determine whether, upstream and at a predetermined maximum distance of the vehicle concerned, on said section, for a short predetermined period of time, at least one braking frame pre-existing, and, if so, it may create, in a database called “disturbance base", a record in which it will describe as "tail cork” the position associated with the current braking frame.
- the remote server can then consult the "disturbance base" to determine whether there is upstream and at a predetermined maximum distance of the vehicle concerned, on said section, for a short predetermined period of time, at least one pre-existing plug, and if so, it will modify, in the "disturbance base", the existing tail queue record to substitute, as the tail of the stopper, the position associated with the current braking frame.
- the remote server will be able to create in the "disturbance database” a record in which it will describe as “plug head” the position associated with the pre-existing braking frame.
- the remote server can then ask vehicles located between the head and the tail of a plug to go up, at a specific frequency, a frame of information, including GPS type. From said information frames the remote server will be able to determine the average speed inside the plug as well as manage the movements of head and tail plug.
- the remote server can determine the distance between each of the vehicles located between the head and the tail of a plug, the head thereof and communicate this information to the onboard device. For each vehicle located between the head and tail of a cap, the remote server can determine the time it will be necessary to reach the head of the cap and communicate it to each device embedded in the cap.
- the on-board device of a vehicle Upon receipt of the distance and / or time required, the on-board device of a vehicle can communicate this information to the driver of the latter in voice and / or visual form.
- each of the vehicles will send, periodically, an information frame to the remote server (2) and, on reception the latter, by comparing the information of this frame with the data of the "cartographic base", will determine the section and the direction of movement of the vehicle associated with said current frame.
- the remote server will then determine if there exists, in the disturbance base, a plug located upstream of the position of the vehicle corresponding to said frame, and at a distance less than a determined distance thereof, in particular from the order of 5 to 10 kilometers.
- the remote server may determine the distance separating said position of the vehicle from the tail of the disturbance located upstream. Similarly he can calculate the length of the cap and communicate this information to the onboard device.
- the remote server will determine whether, between the position of the vehicle and the tail of the stopper, there exists in the "cartographic base" an exit route and, if it exists, it will communicate the distance to it. embedded device.
- FIG. 1 is a schematic view of a system intended to implement the method according to the present invention
- FIG. 2 is a flow chart illustrating the acquisition and management of a database of disturbances and in particular plugs.
- the system according to the invention which is shown in FIG. 1, comprises a device
- the onboard device 1 comprises a microprocessor 3 which provides the logical management of various peripheral elements, namely geolocation means 5, in particular of the GPS type, and communication means 7 with the remote server 2, in particular of the GSM type.
- the on-board device 1 also comprises means capable of allowing the driver to receive messages from the remote server 2 in sound form by means of a loudspeaker 9, and / or in visual form by means of a screen 11.
- the remote server 2 comprises a processor 15 which manages several databases, namely a database 17 called “cartographic base” in which are stored the information allowing it, from the GPS frame provided by the means of geolocation 5, to position the vehicles on road sections, a database 18 called “braking base”, and a database 19 called “disturbance base” whose functions will be specified below.
- the remote server also comprises communication means 21 able to connect it with the communication means 7 of the various on-board devices 1.
- the on-board device 1 on vehicles traveling on a road network reports periodically, for example every second, the GPS-type information frame supplied to it by its users.
- geolocation means 5 which, in a known manner, comprises the location of the vehicle, the instant (hour, minutes, seconds), its speed, and its direction of travel. From this information it calculates moreover the acceleration of the vehicle.
- the management means 3 of the on-board device 1 determine the acceleration variation of the vehicle over the last seconds, for example over the last ten seconds and, in the event that it detects a deceleration and provided that the latter is greater than one.
- given threshold level 5a for example of the order of
- the system performs then a control of the value of the speed difference of the vehicle between its high speed and its low speed, that is to say the speed of the vehicle before and after the deceleration. It is thus possible to measure the speed difference of the vehicle over a short period of time, in particular of the order of ten seconds.
- braking frame this information frame
- the management device 15 of the latter Upon receipt of this information frame, the management device 15 of the latter carries out a location operation during which it consults the "map base" 17 to determine the section of roadway on which the vehicle concerned is located.
- the following section will be understood to mean a road or part of a roadway situated between two intersections of this road with secant roads.
- the management system 15 of the remote server 2 then carries out a filtering in order to eliminate the so-called "off-field" zones, that is to say the zones where it is normal to perform a braking followed by a significant slowdown, such as particularly urban areas, rest stops of motorways, toll barriers etc ...
- the braking frame received by the remote server 2 is stored in the database called "braking base".
- the management system 15 of the remote server 2 searches in the so-called "disturbance base” database if, upstream of the zone determined by the last recorded braking frame and in a zone close to this one of the order for example from 1 to 2 km there is already a recorded disturbance, hereinafter referred to as a plug. If this is the case, the system considers that it is the last recorded frame which constitutes the tail of this plug, that is to say the end of this one and records it as such in the "base of the disturbances "19 and it is the position associated with the pre-existing frame which constitutes the head of the plug.
- the remote server 2 selects the vehicles that are inside the cap and asks them to communicate periodically, including every minute, their GPS information frame. Based on the values of the speeds contained in each of them, the management system of the remote server 2 calculates the value of the average speed Vm inside the plug.
- the remote server 2 then sends each of the vehicles in the cap this information, information that the onboard device 1 thereof communicates to the driver of the vehicle using its display means 11 and / or audio 9 .
- the driver of a vehicle situated in a stopper and equipped with the system according to the invention is kept permanently informed of its situation inside the latter, both with regard to the Dt distance that separates it from the cap head than time Tt that will be necessary to reach it.
- each onboard device will calculate the crossing time Tt separating it from the head of the plug by dividing the distance Dt_ which separates it from the latter which it knows of the information it has received previously from the server, by its speed which is the average speed Vm in the cork.
- the present invention also makes it possible to take into account the situation of the vehicles which are outside a stopper and which are heading towards it by indicating to them, on the one hand, the distance Dc which separates them from the tail of the stopper and of on the other hand the length Lb. of it.
- each of the vehicles in circulation sends, periodically, in particular with time intervals of the order of one to five minutes, a frame of information of the GPS type to the remote server 2 and, on reception, the latter, by comparing the information of this frame with the data of the "cartographic base" 17, determines the section and the direction of movement of the vehicle concerned.
- the remote server 2 then consults the "disturbance base" 19 to determine if there is a plug upstream of the position of the vehicle concerned and, if such a plug exists, the remote server
- the remote server calculates at this instant the distance DIB separating the current vehicle from the tail of the stopper, since these two positions are known to it.
- the remote server 2 calculates at this time the length Lb of the plug, that is to say the distance separating the head and the tail thereof.
- the remote server 2 then communicates to the on-board device 1 these two values and the latter, through its information means, informs the driver of the vehicle in sound form by means of the loudspeaker 9 and / or in visual form at the same time. average of the screen 11.
- the remote server from the position of the vehicle concerned and by consulting the cartographic base 17, determines whether, between said position of the vehicle and the tail of the stopper, there is a way of exit allowing the user to get out of the lane on which it is located and thus avoid the cap. If this is the case, the remote server determines the distance Ds. separating the vehicle concerned from the exit route and communicates it to the on-board device which, upon receipt, informs the driver of the vehicle.
- the driver of a vehicle approaching a stopper will receive information about its existence, its length Lb, the distance D LL which separates it from the plug tail and than the possibility of avoiding it.
- the on-board device 1 is provided with a cartographic database which enables the latter to carry out the aforementioned filtering operation itself, and to send to the server 2 the braking frame only if the considered area is in a so-called active zone.
- a cartographic database which enables the latter to carry out the aforementioned filtering operation itself, and to send to the server 2 the braking frame only if the considered area is in a so-called active zone.
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Description
PROCEDE ET DISPOSITIF D'ACQUISITION ET DE GESTION AUTOMATIQUE DE PERTURBATIONS ROUTIERES METHOD AND DEVICE FOR ACQUIRING AND AUTOMATICALLY MANAGING ROAD DISTURBANCES
La présente invention concerne un procédé d'acquisition et de gestion automatique par un serveur distant de données relatives à des perturbations routières provoquant un ralentissement de véhicules sur un tronçon d'un réseau routier, communément qualifié de bouchon. La présente invention concerne également un procédé permettant de communiquer à un dispositif embarqué sur ces véhicules lesdites informations de perturbation. The present invention relates to a method of acquisition and automatic management by a remote server of data relating to road disturbances causing a slowing of vehicles on a section of a road network, commonly referred to as a plug. The present invention also relates to a method for communicating to a device embedded on these vehicles said disturbance information.
On connaît des systèmes qui, suivant l'état antérieur de la technique, sont en mesure d'afficher sur un dispositif embarqué à bord de véhicules les informations du trafic sous forme de cartes géographiques. De telles cartes indiquent, dans une couleur déterminée conventionnelle, les tronçons routiers sur lesquels la circulation est fluide, dans une couleur différente les tronçons routiers sur lesquels la circulation est ralentie et enfin, dans une troisième couleur, les tronçons routiers sur lesquels une importante perturbation conduit à une situation de bouchon. Systems are known which, according to the prior art, are able to display on a device on board vehicles traffic information in the form of geographical maps. Such maps indicate, in a determined conventional color, the road sections on which the circulation is fluid, in a different color the road sections on which the circulation is slowed down and finally, in a third color, the road sections on which a significant disturbance leads to a plug situation.
Si de telles cartographies permettent de figurer au conducteur d'un véhicule les possibles sorties lui permettant de s'extraire d'un bouchon, ils ne sont pas en mesure de lui indiquer au bout de combien de temps il lui sera possible de sortir de celui-ci, par plus qu'ils ne lui indiquent quel sera l'impact de ce bouchon sur son temps de trajet. If such maps make it possible to indicate to the driver of a vehicle the possible exits enabling him to get out of a traffic jam, they are not able to tell him how long it will be possible for him to leave the vehicle. - by that they do not tell him what the impact of this plug will be on his travel time.
On connaît également par la demande de brevet US 2009/0192688 un système destiné à relever divers paramètres relatifs à des conditions de circulation et notamment les freinages importants réalisés par les voitures. Cependant l'objet de ce brevet manque de précision et de fiabilité, dans la mesure où il ne prend en compte que la mesure de l'accélération. Also known from the US patent application 2009/0192688 a system for recording various parameters relating to traffic conditions and in particular significant braking performed by cars. However, the subject of this patent lacks precision and reliability, insofar as it only takes into account the measurement of the acceleration.
La présente invention a pour but de réaliser de façon automatique par un serveur, notamment un serveur distant, l'acquisition en temps réel de la position des éventuels bouchons en mesure de se former, de perdurer ou de se résorber sur un réseau. The present invention aims to achieve automatically by a server, including a remote server, the real-time acquisition of the position of any plugs able to form, to persist or to resorb on a network.
La présente invention a également pour but de communiquer l'existence de tels bouchons aux conducteurs des véhicules qui se trouvent en approche de ces derniers, et de communiquer aux conducteurs des véhicules qui se trouvent au sein de ce bouchon leur positionnement à l'intérieur de celui-ci. The present invention also aims to communicate the existence of such plugs to the drivers of the vehicles that are in approach of the latter, and to communicate to the drivers of vehicles that are within this plug their positioning inside thereof.
La présente invention a ainsi pour objet un procédé d'acquisition et de gestion par un serveur distant de données relatives à des perturbations routières provoquant un ralentissement de véhicules sur au moins un tronçon routier, dans lequel The present invention thus relates to a method of acquisition and management by a remote server of data relating to road disturbances causing a slowing down of vehicles on at least one road section, in which
- un dispositif embarqué sur un véhicule est apte à transmettre une trame d'informations au serveur distant, a device embedded on a vehicle is able to transmit an information frame to the remote server,
- le serveur distant est apte à traiter celle-ci et à renvoyer au dispositif embarqué des informations que ce dernier est apte à transmettre au conducteur du véhicule, the remote server is able to process it and to send back to the on-board device information that the latter is able to transmit to the driver of the vehicle,
caractérisé en ce que: characterized in that
- le dispositif embarqué détermine périodiquement d'un système de géolocalisation une trame d'informations, the on-board device periodically determines, from a geolocation system, an information frame,
- le dispositif embarqué calcule l'accélération à laquelle le véhicule est soumis et envoie au serveur distant une trame d'informations, notamment de type GPS, dite "trame de freinage" lorsque: the on-board device calculates the acceleration to which the vehicle is subjected and sends the remote server a frame of information, in particular of the GPS type, called the "braking frame" when:
a) l'accélération est négative et est supérieure à une première valeur de seuil déterminée et que a) the acceleration is negative and is greater than a first determined threshold value and that
b) la variation de la vitesse du véhicule due à la dite décélération avant et après celle-ci, est supérieure à une seconde valeur de seuil, b) the variation of the vehicle speed due to said deceleration before and after it is greater than a second threshold value,
- à réception de la trame de freinage, le serveur distant sauvegarde cette dernière dans une base de données dite "base des freinages". - Upon receipt of the braking frame, the remote server saves the latter in a database called "brake base".
Suivant l'invention le serveur distant, par comparaison des informations d'une trame de freinage en cours provenant de la "base des freinages" avec les données d'une "base de données cartographique", pourra déterminer le tronçon et le sens de circulation du véhicule associé à ladite trame de freinage en cours en cours. According to the invention, the remote server, by comparing the information of a braking frame in progress coming from the "braking base" with the data of a "map database", can determine the section and the direction of movement. of the vehicle associated with said braking frame in progress.
De façon à améliorer la qualité de l'information transmise aux conducteurs des véhicules, le serveur distant pourra mettre en œuvre une étape de filtrage visant à établir si ledit tronçon déterminé se situe dans une zone active, c'est-à-dire une zone pour laquelle il n'y a pas de ralentissement naturel, telle que, par exemple, une zone de péage. Si tel n'est pas le cas, il supprimera, dans la "base des freinages", la trame de freinage associée au susdit tronçon déterminé. In order to improve the quality of the information transmitted to the drivers of the vehicles, the remote server will be able to performs a filtering step to establish if said determined section is in an active zone, that is to say an area for which there is no natural slowdown, such as, for example, a toll zone . If this is not the case, it will remove, in the "braking base", the braking frame associated with the aforementioned determined section.
Le serveur distant pourra ensuite consulter la "base des freinages" afin de déterminer s'il existe, en amont et à une distance maximale prédéterminée du véhicule concerné, sur ledit tronçon, pendant une courte période de temps déterminée, au moins une trame de freinage préexistante, et, dans l'affirmative, il pourra créer, dans une base de données dite "base des perturbations", un enregistrement dans lequel il qualifiera de "queue de bouchon" la position associée à la trame de freinage en cours. The remote server will then be able to consult the "braking base" to determine whether, upstream and at a predetermined maximum distance of the vehicle concerned, on said section, for a short predetermined period of time, at least one braking frame pre-existing, and, if so, it may create, in a database called "disturbance base", a record in which it will describe as "tail cork" the position associated with the current braking frame.
Le serveur distant pourra ensuite consulter la "base des perturbations" afin de déterminer s'il existe en amont et à une distance maximale prédéterminée du véhicule concerné, sur ledit tronçon, pendant une courte période de temps déterminée, au moins un bouchon préexistant, et, dans l'affirmative, il modifiera, dans la "base des perturbations" l'enregistrement de queue de bouchon existant pour lui substituer, en tant que queue de bouchon, la position associée à la trame de freinage en cours. The remote server can then consult the "disturbance base" to determine whether there is upstream and at a predetermined maximum distance of the vehicle concerned, on said section, for a short predetermined period of time, at least one pre-existing plug, and if so, it will modify, in the "disturbance base", the existing tail queue record to substitute, as the tail of the stopper, the position associated with the current braking frame.
Le serveur distant pourra créer dans la "base des perturbations" un enregistrement dans lequel il qualifiera de "tête de bouchon" la position associée à la trame de freinage préexistante. The remote server will be able to create in the "disturbance database" a record in which it will describe as "plug head" the position associated with the pre-existing braking frame.
Le serveur distant pourra ensuite demander aux véhicules se situant entre la tête et la queue d'un bouchon de lui remonter, à une fréquence déterminée, une trame d'informations, notamment de type GPS. A partir desdites trames d'informations le serveur distant pourra déterminer la vitesse moyenne à l'intérieur du bouchon ainsi que gérer les déplacements de tête et de queue de bouchon. The remote server can then ask vehicles located between the head and the tail of a plug to go up, at a specific frequency, a frame of information, including GPS type. From said information frames the remote server will be able to determine the average speed inside the plug as well as manage the movements of head and tail plug.
Le serveur distant pourra déterminer la distance séparant chacun des véhicules se situant entre la tête et la queue d'un bouchon, de la tête de celui-ci et communiquer cette information au dispositif embarqué. Pour chacun des véhicules se situant entre la tête et la queue d'un bouchon, le serveur distant pourra déterminer le temps qui lui sera nécessaire pour atteindre la tête de ce bouchon et le communiquer à chaque dispositif embarqué dans le bouchon. The remote server can determine the distance between each of the vehicles located between the head and the tail of a plug, the head thereof and communicate this information to the onboard device. For each vehicle located between the head and tail of a cap, the remote server can determine the time it will be necessary to reach the head of the cap and communicate it to each device embedded in the cap.
A réception de la distance et/ou du temps nécessaire, le dispositif embarqué d'un véhicule pourra communiquer ces informations au conducteur de celui-ci sous forme vocale et/ou visuelle. Upon receipt of the distance and / or time required, the on-board device of a vehicle can communicate this information to the driver of the latter in voice and / or visual form.
Afin de prendre en compte la situation des véhicules qui se trouvent hors d'un bouchon mais qui se dirigent vers celui-ci, chacun des véhicules enverra, de façon périodique, une trame d'informations au serveur distant (2) et, à réception, ce dernier, par comparaison des informations de cette trame avec les données de la "base cartographique", déterminera le tronçon et le sens de circulation du véhicule associé à ladite trame en cours. Le serveur distant déterminera ensuite s'il existe, dans la base des perturbations, un bouchon situé en amont de la position du véhicule correspondant à la dite trame, et à une distance inférieure à une distance déterminée de celle-ci, notamment de l'ordre de 5 à 10 kilomètres. In order to take into account the situation of the vehicles which are outside a stopper but which are heading towards it, each of the vehicles will send, periodically, an information frame to the remote server (2) and, on reception the latter, by comparing the information of this frame with the data of the "cartographic base", will determine the section and the direction of movement of the vehicle associated with said current frame. The remote server will then determine if there exists, in the disturbance base, a plug located upstream of the position of the vehicle corresponding to said frame, and at a distance less than a determined distance thereof, in particular from the order of 5 to 10 kilometers.
Le serveur distant pourra déterminer la distance séparant ladite position du véhicule de la queue de la perturbation située en amont. De même il pourra calculer la longueur du bouchon et communiquer ces informations au dispositif embarqué. The remote server may determine the distance separating said position of the vehicle from the tail of the disturbance located upstream. Similarly he can calculate the length of the cap and communicate this information to the onboard device.
Dans une variante particulièrement intéressante de l'invention le serveur distant déterminera si, entre la position du véhicule et la queue du bouchon, il existe dans la "base cartographique" une voie de sortie et, si elle existe, il en communiquera la distance au dispositif embarqué. In a particularly advantageous variant of the invention, the remote server will determine whether, between the position of the vehicle and the tail of the stopper, there exists in the "cartographic base" an exit route and, if it exists, it will communicate the distance to it. embedded device.
On décrira ci-après, à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence au dessin annexé sur lequel : An embodiment of the present invention will be described hereinafter by way of nonlimiting example, with reference to the appended drawing in which:
la figure 1 est une vue schématique d'un système destiné à mettre en œuvre le procédé suivant la présente invention, FIG. 1 is a schematic view of a system intended to implement the method according to the present invention,
les figures 2 et 3 sont des logigrammes illustrant l'acquisition et la gestion d'une base de données de perturbations et notamment de bouchons. Dans le présent mode de mise en œuvre, le système suivant l'invention, qui est représenté sur la figure 1, comprend un dispositifFigures 2 and 3 are flow charts illustrating the acquisition and management of a database of disturbances and in particular plugs. In the present embodiment, the system according to the invention, which is shown in FIG. 1, comprises a device
1 embarqué sur un véhicule et un serveur distant 2. 1 on a vehicle and a remote server 2.
Le dispositif embarqué 1 comprend un microprocesseur 3 qui assure la gestion logique de différents éléments périphériques, à savoir des moyens de géolocalisation 5, notamment de type GPS, et des moyens de communication 7 avec le serveur distant 2, notamment de type GSM. Le dispositif embarqué 1 comprend également des moyens aptes à permettre au conducteur de recevoir des messages du serveur distant 2 sous forme sonore au moyen d'un haut-parleur 9, et/ou sous forme visuelle au moyen d'un écran 11. The onboard device 1 comprises a microprocessor 3 which provides the logical management of various peripheral elements, namely geolocation means 5, in particular of the GPS type, and communication means 7 with the remote server 2, in particular of the GSM type. The on-board device 1 also comprises means capable of allowing the driver to receive messages from the remote server 2 in sound form by means of a loudspeaker 9, and / or in visual form by means of a screen 11.
Le serveur distant 2 comporte un processeur 15 qui assure la gestion de plusieurs bases de données, à savoir une base de données 17 dite "base cartographique" dans laquelle sont stockées les informations lui permettant, à partir de la trame GPS fournie par les moyens de géolocalisation 5, de positionner les véhicules sur des tronçons routiers, une base de donnée 18 dite "base des freinages", ainsi qu'une base de données 19 dite "base des perturbations" dont les fonctions seront précisées ci-après. Le serveur distant comporte également des moyens de communication 21 aptes à le mettre en relation avec les moyens de communication 7 des différents dispositifs embarqués 1. The remote server 2 comprises a processor 15 which manages several databases, namely a database 17 called "cartographic base" in which are stored the information allowing it, from the GPS frame provided by the means of geolocation 5, to position the vehicles on road sections, a database 18 called "braking base", and a database 19 called "disturbance base" whose functions will be specified below. The remote server also comprises communication means 21 able to connect it with the communication means 7 of the various on-board devices 1.
Dans une première étape du procédé suivant l'invention, le dispositif embarqué 1 sur les véhicules en déplacement sur un réseau routier relève, de façon périodique, par exemple toutes les secondes, la trame d'information de type GPS qui lui est fournie par ses moyens de géolocalisation 5 et qui, de façon connue, comprend la localisation du véhicule, l'instant (heure, minutes, secondes), sa vitesse, et son sens de déplacement. A partir de ces informations il calcule de plus l'accélération du véhicule. In a first step of the method according to the invention, the on-board device 1 on vehicles traveling on a road network reports periodically, for example every second, the GPS-type information frame supplied to it by its users. geolocation means 5 and which, in a known manner, comprises the location of the vehicle, the instant (hour, minutes, seconds), its speed, and its direction of travel. From this information it calculates moreover the acceleration of the vehicle.
Les moyens de gestion 3 du dispositif embarqué 1 déterminent ensuite la variation d'accélération du véhicule sur les dernières secondes, par exemple sur les dix dernières et, dans l'hypothèse où il détecte une décélération et sous réserve que cette dernière soit supérieure à un niveau de seuil donné 5a, par exemple de l'ordre de The management means 3 of the on-board device 1 then determine the acceleration variation of the vehicle over the last seconds, for example over the last ten seconds and, in the event that it detects a deceleration and provided that the latter is greater than one. given threshold level 5a, for example of the order of
2 à 8 m/s2 (ce qui traduit un freinage important), le système effectue alors un contrôle de la valeur de la différence de vitesse du véhicule entre sa vitesse haute et sa vitesse basse, c'est-à-dire la vitesse du véhicule avant et après la décélération. On peut ainsi pour ce faire mesurer la différence de vitesse du véhicule sur une courte période rapprochée, notamment de l'ordre des dix secondes. 2 to 8 m / s 2 (which reflects a significant braking), the system performs then a control of the value of the speed difference of the vehicle between its high speed and its low speed, that is to say the speed of the vehicle before and after the deceleration. It is thus possible to measure the speed difference of the vehicle over a short period of time, in particular of the order of ten seconds.
Au cours de ce contrôle, s'il s'avère que cette différence de vitesse est supérieure à un niveau de seuil donné δν_ déterminé, par exemple de l'ordre de 30 à 60 km/h (ce qui correspond à un ralentissement important), le système de gestion considère qu'il se trouve alors en présence d'un freinage à prendre en compte et il communique alors cette trame d'information, dite ci-après "trame de freinage", via ses moyens de communication 7, au serveur distant 2. During this check, if it turns out that this difference in speed is greater than a given threshold level δν_ determined, for example of the order of 30 to 60 km / h (which corresponds to a significant slowdown) , the management system considers that it is then in the presence of braking to be taken into account and it then communicates this information frame, hereinafter called "braking frame", via its communication means 7, to remote server 2.
À réception de cette trame d'informations, le dispositif de gestion 15 de ce dernier effectue une opération de localisation au cours de laquelle il consulte la "base cartographique" 17 afin de déterminer le tronçon de voie routière sur laquelle se situe le véhicule concerné. On entendra ci-après par tronçon une voie ou une partie de voie routière située entre deux intersections de cette voie avec des voies sécantes. Upon receipt of this information frame, the management device 15 of the latter carries out a location operation during which it consults the "map base" 17 to determine the section of roadway on which the vehicle concerned is located. The following section will be understood to mean a road or part of a roadway situated between two intersections of this road with secant roads.
Le système de gestion 15 du serveur distant 2 effectue alors un filtrage afin d'éliminer les zones dites "hors champ" c'est-à-dire les zones où il est normal de réaliser un freinage suivi d'un ralentissement important, telles que notamment les zones urbaines, les aires de repos des autoroutes, les barrières de péage etc ... The management system 15 of the remote server 2 then carries out a filtering in order to eliminate the so-called "off-field" zones, that is to say the zones where it is normal to perform a braking followed by a significant slowdown, such as particularly urban areas, rest stops of motorways, toll barriers etc ...
Si le véhicule se trouve ainsi dans une zone dite "hors champ", la trame de freinage est supprimée et le processus d'acquisition recommence au début. If the vehicle is thus in a so-called "off-field" zone, the braking frame is removed and the acquisition process starts again at the beginning.
Si le véhicule ne se trouve pas dans une telle zone hors champ, la trame de freinage reçue par le serveur distant 2 est enregistrée dans la base de données dite "base des freinages". If the vehicle is not in such an off-field area, the braking frame received by the remote server 2 is stored in the database called "braking base".
Le système de gestion 15 du serveur distant 2 recherche alors dans la base de données dite "base des perturbations" si, en amont de la zone déterminée par la dernière trame de freinage enregistrée et dans une zone proche de celle-ci de l'ordre par exemple de 1 à 2 km il existe déjà une perturbation enregistrée, ci-après qualifiée de bouchon. Si tel est le cas, le système considère que c'est la dernière trame enregistrée qui constitue la queue de ce bouchon, c'est-à-dire la fin de celui-ci et l'enregistre comme telle dans la "base des perturbations" 19 et c'est la position associée à la trame préexistante qui constitue la tête du bouchon. The management system 15 of the remote server 2 then searches in the so-called "disturbance base" database if, upstream of the zone determined by the last recorded braking frame and in a zone close to this one of the order for example from 1 to 2 km there is already a recorded disturbance, hereinafter referred to as a plug. If this is the case, the system considers that it is the last recorded frame which constitutes the tail of this plug, that is to say the end of this one and records it as such in the "base of the disturbances "19 and it is the position associated with the pre-existing frame which constitutes the head of the plug.
Connaissant la tête et la queue du bouchon le système est dès lors en mesure de déterminer la longueur L_b_ de celui-ci. Knowing the head and tail of the cap the system is then able to determine the length L_b_ thereof.
Le serveur distant 2 sélectionne ensuite les véhicules qui se trouvent à l'intérieur du bouchon et leur demande de lui communiquer périodiquement, notamment toutes les minutes, leur trame d'informations de type GPS. Sur la base des valeurs des vitesses contenues dans chacune de celles-ci, le système de gestion du serveur distant 2 calcule la valeur de la vitesse moyenne Vm à l'intérieur du bouchon. Le système de gestion du serveur distant dispose dès lors des paramètres lui permettant de calculer d'une part la distance Di séparant chacun des véhicules situés dans le bouchon de la tête de ce dernier ainsi que le temps Tt qui lui est nécessaire pour parvenir en tête de ce bouchon et qui est: Tt=Dt/Vm. The remote server 2 then selects the vehicles that are inside the cap and asks them to communicate periodically, including every minute, their GPS information frame. Based on the values of the speeds contained in each of them, the management system of the remote server 2 calculates the value of the average speed Vm inside the plug. The management system of the remote server therefore has parameters enabling it to calculate, on the one hand, the distance Di separating each of the vehicles situated in the cap of the latter's head as well as the time Tt which it is necessary to reach the top. of this plug and which is: Tt = Dt / Vm.
Le serveur distant 2 fait alors parvenir à chacun des véhicules se trouvant dans le bouchon ces informations, informations que le dispositif embarqué 1 de celui-ci communique au conducteur du véhicule à l'aide de ses moyens d'affichage 11 et/ou audio 9. The remote server 2 then sends each of the vehicles in the cap this information, information that the onboard device 1 thereof communicates to the driver of the vehicle using its display means 11 and / or audio 9 .
Le serveur distant peut également calculer la perte de temps 5t causée par l'existence du bouchon et qui est égale au temps qui est nécessaire au véhicule pour traverser le bouchon, soit Lb/Vm, moins le temps qui lui aurait été nécessaire pour parcourir une distance égale à la longueur Lb du bouchon à la vitesse limitée à cet endroit (Vlim) soit Lb/Vlim. Ainsi 5T=Lb/Vm - Lb/VIim The remote server can also calculate the time loss caused by the existence of the plug and which is equal to the time required for the vehicle to cross the plug, ie Lb / Vm, minus the time that would have been necessary for it to traverse a distance equal to the length Lb of the stopper at the speed limited at this point (Vlim) is Lb / Vlim. So 5T = Lb / Vm - Lb / VIim
Ainsi, suivant l'invention, le conducteur d'un véhicule situé dans un bouchon et qui est équipé du système suivant l'invention est tenu informé en permanence de sa situation à l'intérieur de celui-ci, tant en ce qui concerne la distance Dt qui le sépare de la tête du bouchon que du temps Tt qui lui sera nécessaire pour atteindre celle- ci. Thus, according to the invention, the driver of a vehicle situated in a stopper and equipped with the system according to the invention is kept permanently informed of its situation inside the latter, both with regard to the Dt distance that separates it from the cap head than time Tt that will be necessary to reach it.
Dans une variante de mise en œuvre, qui ne requiert pas de communication descendante entre le serveur distant 2 et les dispositifs embarqués dans un bouchon, chaque dispositif embarqué calculera le temps de traversée Tt qui le sépare de la tête du bouchon en divisant la distance Dt_ qui le sépare de celle-ci qu'il connaît de l'information qu'il a reçue précédemment du serveur, par sa vitesse qui est la vitesse moyenne Vm dans le bouchon. In an implementation variant, which does not require downlink communication between the remote server 2 and the devices embedded in a plug, each onboard device will calculate the crossing time Tt separating it from the head of the plug by dividing the distance Dt_ which separates it from the latter which it knows of the information it has received previously from the server, by its speed which is the average speed Vm in the cork.
La présente invention permet également de prendre en compte la situation des véhicules qui se trouvent en dehors d'un bouchon et qui se dirigent vers celui-ci en leur indiquant d'une part la distance Dçi qui les sépare de la queue du bouchon et d'autre part la longueur Lb. de celui-ci. The present invention also makes it possible to take into account the situation of the vehicles which are outside a stopper and which are heading towards it by indicating to them, on the one hand, the distance Dc which separates them from the tail of the stopper and of on the other hand the length Lb. of it.
À cet effet chacun des véhicules en circulation envoie, de façon périodique, notamment avec des intervalles de temps de l'ordre de une à cinq minutes, une trame d'informations de type GPS au serveur distant 2 et, à réception, ce dernier, par comparaison des informations de cette trame avec les données de la "base cartographique" 17, détermine le tronçon et le sens de circulation du véhicule concerné. For this purpose each of the vehicles in circulation sends, periodically, in particular with time intervals of the order of one to five minutes, a frame of information of the GPS type to the remote server 2 and, on reception, the latter, by comparing the information of this frame with the data of the "cartographic base" 17, determines the section and the direction of movement of the vehicle concerned.
Le serveur distant 2 consulte ensuite la "base des perturbations" 19 afin de déterminer s'il existe un bouchon en amont de la position du véhicule concerné et, si un tel bouchon existe, le serveur distant The remote server 2 then consults the "disturbance base" 19 to determine if there is a plug upstream of the position of the vehicle concerned and, if such a plug exists, the remote server
2 vérifie si ce dernier se situe à une distance inférieure à une valeur de seuil déterminée, notamment de l'ordre de cinq à dix kilomètres. 2 verifies if it is at a distance less than a determined threshold value, in particular of the order of five to ten kilometers.
Si tel est le cas le serveur distant calcule à cet instant la distance DÇL séparant le véhicule en cours de la queue du bouchon, puisque ces deux positions lui sont connues. De plus le serveur distant 2 calcule à cet instant la longueur Lb du bouchon c'est-à-dire la distance séparant la tête et la queue de celui-ci. Le serveur distant 2 communique ensuite au dispositif embarqué 1 ces deux valeurs et ce dernier, par l'intermédiaire de ses moyens d'information, informe le conducteur du véhicule sous forme sonore au moyen du haut-parleur 9 et/ou sous forme visuelle au moyen de l'écran 11. If this is the case, the remote server calculates at this instant the distance DIB separating the current vehicle from the tail of the stopper, since these two positions are known to it. In addition, the remote server 2 calculates at this time the length Lb of the plug, that is to say the distance separating the head and the tail thereof. The remote server 2 then communicates to the on-board device 1 these two values and the latter, through its information means, informs the driver of the vehicle in sound form by means of the loudspeaker 9 and / or in visual form at the same time. average of the screen 11.
Dans une variante particulièrement intéressante de l'invention le serveur distant, à partir de la position du véhicule concerné et par consultation de la base cartographique 17, détermine si, entre ladite position du véhicule et la queue du bouchon, il existe une voie de sortie permettant à l'utilisateur de sortir de la voie de circulation sur laquelle il se trouve et d'éviter ainsi le bouchon. Si tel est le cas, le serveur distant détermine la distance Ds. séparant le véhicule concerné de la voie de sortie et communique celle-ci au dispositif embarqué qui, à réception, en informe le conducteur du véhicule. In a particularly advantageous variant of the invention the remote server, from the position of the vehicle concerned and by consulting the cartographic base 17, determines whether, between said position of the vehicle and the tail of the stopper, there is a way of exit allowing the user to get out of the lane on which it is located and thus avoid the cap. If this is the case, the remote server determines the distance Ds. separating the vehicle concerned from the exit route and communicates it to the on-board device which, upon receipt, informs the driver of the vehicle.
Ainsi, suivant l'invention, le conducteur d'un véhicule en approche d'un bouchon recevra l'information de l'existence de celui- ci, de sa longueur Lb_, de la distance DÇL qui le sépare de la queue de bouchon ainsi que de la possibilité de l'éviter. Thus, according to the invention, the driver of a vehicle approaching a stopper will receive information about its existence, its length Lb, the distance D LL which separates it from the plug tail and than the possibility of avoiding it.
Dans une variante de mise en œuvre de la présente invention, le dispositif embarqué 1 est pourvu d'une base de données cartographique qui permet à ce dernier de procéder lui-même à l'opération précédemment dite de filtrage, et de n'envoyer au serveur 2 la trame de freinage que si la zone considérée se situe dans une zone dite active. Une telle disposition permet d'alléger la quantité de données qui sont transmises au serveur distant et qui doivent être traitées par ce dernier. In an implementation variant of the present invention, the on-board device 1 is provided with a cartographic database which enables the latter to carry out the aforementioned filtering operation itself, and to send to the server 2 the braking frame only if the considered area is in a so-called active zone. Such an arrangement makes it possible to reduce the amount of data that is transmitted to the remote server and that must be processed by the latter.
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13719584.8A EP2834798B1 (en) | 2012-04-03 | 2013-03-29 | Method and device for automatically acquiring and managing road disruptions |
| ES13719584T ES2808402T3 (en) | 2012-04-03 | 2013-03-29 | Method and device for the acquisition and automatic management of road disturbances |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1200984A FR2988893B1 (en) | 2012-04-03 | 2012-04-03 | METHOD FOR ACQUISITION AND MANAGEMENT OF DATA RELATING TO ROAD DISTURBANCE |
| FR1200984 | 2012-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013150230A1 true WO2013150230A1 (en) | 2013-10-10 |
Family
ID=47019040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2013/050716 Ceased WO2013150230A1 (en) | 2012-04-03 | 2013-03-29 | Method and device for automatically acquiring and managing road disruptions |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2834798B1 (en) |
| ES (1) | ES2808402T3 (en) |
| FR (1) | FR2988893B1 (en) |
| PT (1) | PT2834798T (en) |
| WO (1) | WO2013150230A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071092B (en) * | 2020-09-21 | 2021-03-30 | 江苏臻云技术有限公司 | Road traffic intelligent mitigation control system based on cloud computing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6810321B1 (en) * | 2003-03-17 | 2004-10-26 | Sprint Communications Company L.P. | Vehicle traffic monitoring using cellular telephone location and velocity data |
| US20090192688A1 (en) | 2008-01-30 | 2009-07-30 | Microsoft Corporation | System for sensing road and traffic conditions |
-
2012
- 2012-04-03 FR FR1200984A patent/FR2988893B1/en active Active
-
2013
- 2013-03-29 EP EP13719584.8A patent/EP2834798B1/en active Active
- 2013-03-29 ES ES13719584T patent/ES2808402T3/en active Active
- 2013-03-29 WO PCT/FR2013/050716 patent/WO2013150230A1/en not_active Ceased
- 2013-03-29 PT PT137195848T patent/PT2834798T/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6810321B1 (en) * | 2003-03-17 | 2004-10-26 | Sprint Communications Company L.P. | Vehicle traffic monitoring using cellular telephone location and velocity data |
| US20090192688A1 (en) | 2008-01-30 | 2009-07-30 | Microsoft Corporation | System for sensing road and traffic conditions |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2988893A1 (en) | 2013-10-04 |
| ES2808402T3 (en) | 2021-02-26 |
| FR2988893B1 (en) | 2022-05-20 |
| EP2834798B1 (en) | 2020-04-29 |
| PT2834798T (en) | 2020-07-31 |
| EP2834798A1 (en) | 2015-02-11 |
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