EP0925567B1 - Procede de localisation d'un appel d'urgence - Google Patents
Procede de localisation d'un appel d'urgence Download PDFInfo
- Publication number
- EP0925567B1 EP0925567B1 EP97938981A EP97938981A EP0925567B1 EP 0925567 B1 EP0925567 B1 EP 0925567B1 EP 97938981 A EP97938981 A EP 97938981A EP 97938981 A EP97938981 A EP 97938981A EP 0925567 B1 EP0925567 B1 EP 0925567B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- memory means
- positions
- recorded
- tracking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
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- 238000004891 communication Methods 0.000 claims description 9
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Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
- G08G1/127—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams to a central station ; Indicators in a central station
Definitions
- An emergency call system from a vehicle to a call center which takes the measurements adapted to the type of call, for example relating to a breakdown, a accident, assault etc.
- a localization process of a vehicle provided with a locating means for example a GPS receiver, which is based on recording an estate of positions provided by this locating means, on the development of a trajectory from said positions, and on the comparison of the trajectory obtained with the road sections neighboring previously stored in another means of memorization.
- the main difficulty of implementation lies in the precision required to locate the vehicle. Indeed, a imprecision on the location leads to an extension of the intervention time which can have serious consequences when the intervention follows an accident which resulted in injuries.
- the publication EP0601712 describes a process using a G.P.S. system associated with a stored map.
- the system does not display the point given by the G.P.S. system or estimated, but among the points on the closest road, displays the one closest to said point G.P.S. or estimated.
- Gold the precision obtained from the simple information provided by a G.P.S.
- the G.P.S. is currently artificially scrambled by the U.S. military, causing a drop in the accuracy that goes from a value between 10 and 20 meters to a value between 80 and 100 meters.
- multiple paths may occur between the satellites and the vehicle's receiving antenna, which can lead to positioning errors of up to several hundreds of meters.
- obtaining a position is only possible if Vehicle antenna is in line of sight with a number enough satellites. So, during a trip in the forest, the system may be unable to provide a position for several hundreds of meters or even kilometers.
- the present invention aims to overcome the drawbacks of known emergency call systems.
- the proposed system allows a correlation between two pieces curve, the path developed from the positions recorded in the first storage medium and the part of route recorded in the second storage means, this which is much safer than a correlation between the road and a unique position which may be marred by an error of a few tens to a few hundred meters.
- the mobile means of communication which transmits the succession of positions recorded in the first storage means to a call center and the second storage means can advantageously be a cellular radio telephone.
- the call center can thus precisely locate said vehicle on the road network, in order to use the appropriate means as soon as possible short possible.
- the determination of the route taken by the vehicle is achieved by correlation mathematical between the trajectory and each of the portions of neighboring roads.
- This feature allows automatic determination of the route taken by the vehicle.
- the site corresponding to the position of the vehicle and, superimposed, the trajectory developed from the positions recorded on the first storage means, so that a user can determine graphically the route taken by the vehicle.
- This feature allows an operator, or possibly the driver to visually determine the route taken by the vehicle.
- This characteristic makes it possible to know the speed of the vehicle on its trajectory, which can serve as a complementary means to choose between geographically close routes but different classes.
- a new position in origin of the location means is only recorded on the first memory means, only if the distance traveled since the previous recorded position is greater than a determined value and in this case, the most formerly occupied position is deleted from said means of memorization.
- This characteristic makes it possible to limit the number of memorized positions without harming the correlation.
- This feature eliminates outliers resulting from example of a multiple route between the satellites and the antenna reception of the locating means.
- the first is recorded storage means, with each new position from the means of location, orientation of the vehicle.
- This feature increases the accuracy of the trajectory.
- the vehicle comprises a means of alert which, when it detects an accident, triggers the means of mobile communication which automatically transmits to a means of fixed communication located in a call center, information present in the first means of storage, as well as the last position provided by the location module, accompanied by the distance traveled, or, if this information is not available, the elapsed time from the communication of this position.
- This feature alerts the call center in the event of an accident of the vehicle, automatically and independently of the driver.
- it displays the distance traveled, estimated or measured from the last position provided by the location module, by example in the form of a circle of uncertainty or possible sections on which the vehicle can be found.
- a location module 1 for example of the type G.P.S. receiver periodically provides a calculated position in the form longitude and latitude, instantaneous speed information giving the direction of travel when a sufficient number of satellites are in visibility with the receiving antenna and the time. It is clear that another type of location module could be used provided it provide minimum accuracy.
- a vehicle speed sensor 2 provides, by integration, the distance traveled by the vehicle. This speed information is now available on vehicles at level of the car radio connector. This speed information is indeed used for the automatic modulation of the car radio volume in depending on the speed. This information is processed by a calculation 3 which memorizes them in a first memory 4.
- a filtering algorithm is implemented by the calculation unit 3 to keep only positions which are distinct enough to provide an overall course look followed by the vehicle.
- a typical example of treatment corresponds to a sampling of the information received, not retaining as points memorized as points distant from each other by more than 50 or 100 meters.
- the memorization is done on a sufficient number of points, by example 10, which makes it possible to obtain the trajectory of the vehicle over a distance of the order of 500 or 1000 meters. This information is sufficient to identify the road the vehicle is on. Each point is memorized with the time obtained by the module location.
- the oldest point is deleted from the first memory 4.
- the last point provided by the module location 1 is kept permanently by the computing unit 3 with its time obtained and possibly the distance traveled by the vehicle since obtaining said point, and until the module of location 1 provides a new location.
- the distance travelled is obtained by integration from the signal delivered by the sensor 2 of speed. This distance traveled information can also be recorded with each of the points stored in the first memory 4.
- the information frame is received at the call management center on a fixed communication module 9 also making it possible to receive voice.
- This fixed communication module 9 is controlled by a computer 10 which also controls a second memory 11 allowing storage information describing the road network and the various services referenced geographically.
- the computer 10 performs the decoding of the information received and identifies, in the second memory 11, the site corresponding to the memorized trajectory.
- This information is used by the computer 10 for displaying on a display 12, the network map large scale road, 1/25000 th for example, and, in overprint, the memorized trajectory corresponding to the frame received from the vehicle, as well as the distance traveled or estimated (i.e. based on elapsed time) since the last measurement.
- This distance traveled can be visualized as a circle of uncertainty, or if the network road is vectorized, in the form of possible road sections on which vehicle can be found.
- the operator in view of the display of the memorized trajectory, can identify the route on which the vehicle. This identification can also be carried out in a way automatic using mathematical correlation tools that can calculate the most likely solution (s), if the road network is described in vector form.
- the distance traveled is available for each point stored, it is possible, especially in the event of a multiple journey between the antenna and the satellite, compare the distance traveled by the vehicle between two points stored with the distance calculated from coordinates of the two location measurement points. If we see a significant difference, of more than 200 meters for example, the point (s) can be eliminated because they probably correspond to one or more points outliers.
- the frame can be completed, adding for each point, the orientation of the vehicle.
- the operator knows the position of the vehicle in relation to the road network and can select the means most appropriate intervention.
- These means can be described in a geographically referenced database, either by position, either by a more rigorous description of the territory corresponding to the scope of this service, corresponding for example to limits of municipalities, departments, concessions, etc.
- the operator can thus identify the service best placed to provide assistance and can provide to the provider of this service precise information on the nature of the intervention, including location, in the form of an address or possibly a plan transmitted by voice and / or data.
- the transmission of the information frame does not prevent the possibility a voice link, which offers advantages: details on the nature of the request, confirmation of the dispatch of aid, moral support etc.
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
- Navigation (AREA)
- Mobile Radio Communication Systems (AREA)
Description
- on détermine une distance estimée séparant ladite position de la position précédente et/ou suivante dans la succession enregistrée sur le premier moyen de mémorisation, par calcul à partir des coordonnées desdites positions,
- on calcule l'écart entre cette distance estimée et la distance parcourue enregistrée avec les positions dans le premier moyen de mémorisation,
- on ne retient, pour l'élaboration de la trajectoire, parmi les positions enregistrées sur le premier moyen de mémorisation, que celles pour lesquelles cet écart est inférieur à une valeur déterminée.
- le type de demande (assistance mécanique, accident, etc.) en fonction de la nature de l'activation manuelle avec des boutons associés à des services ou automatique déclenchée par le détecteur de choc 6,
- le dernier point fourni par le module de localisation 1, avec l'heure d'obtention et la distance parcourue depuis,
- la liste des points mémorisés avec leur heure d'obtention, la liste comportant typiquement 10 points,
- des informations complémentaires mémorisées à l'installation du système dans l'unité de calcul 3 grâce à l'interface 8 de programmation et d'initialisation : le numéro de téléphone de l'appelant nécessaire au rappel ou en cas de coupure par exemple, la marque de la voiture, le modèle, la couleur, éventuellement le nom du propriétaire, les caractéristiques médicales particulières des occupants, etc.
Claims (10)
- Procédé de localisation d'un véhicule muni d'un moyen de localisation (1), par exemple un récepteur G.P.S, reposant sur l'enregistrement, dans un premier moyen de mémorisation (4), d'une succession de positions fournies par le moyen de localisation (1), sur l'élaboration d'une trajectoire à partir desdites positions, et sur la comparaison de la trajectoire obtenue avec les portions des routes avoisinantes préalablement stockées dans un second moyen de mémorisation (11), de manière à déterminer la route sur laquelle est située le véhicule, caractérisé en ce que :le premier un moyen de mémorisation (4) est monté dans le véhicule,le véhicule comporte un moyen de communication mobile (7) qui transmet la succession de positions enregistrés dans le premier moyen de mémorisation (4) vers un central d'appels etle second moyen de mémorisation (11) est situé dans le central d'appels où est effectuée la comparaison entre la trajectoire élaborée à partir desdites positions et les positions de routes stockées dans le second moyen de mémorisation (11).
- Procédé de localisation selon la revendication 1, caractérisé en ce que le moyen de communication mobile (7) est un radiotéléphone cellulaire.
- Procédé de localisation selon la revendication 1 ou 2, caractérisé en ce que la détermination de la route empruntée par le véhicule est réalisée par corrélation mathématique entre la trajectoire, et chacune des portions de routes avoisinantes.
- Procédé de localisation selon la revendication 1,2 ou 3, caractérisé en ce qu'on affiche, sur le même moyen d'affichage (12), le site correspondant à la position du véhicule et, en surimpression, la trajectoire élaborée à partir des positions enregistrées sur le premier moyen de mémorisation, de manière à permettre à un utilisateur de déterminer graphiquement la route empruntée par le véhicule.
- Procédé de localisation selon l'une des revendications précédentes, caractérisé en ce qu'on enregistre, sur le premier moyen de mémorisation (4), avec chaque nouvelle position en provenance du moyen de localisation (1), l'heure et la distance parcourue par le véhicule depuis la précédente localisation.
- Procédé de localisation selon la revendication 5, caractérisé en ce qu'une nouvelle position en provenance du moyen de localisation (1), n'est enregistrée sur le premier moyen de mémorisation (4), que si la distance parcourue depuis la précédente position enregistrée est supérieure à une valeur déterminée et que dans ce cas, la position la plus anciennement occupée est effacée dudit moyen de mémorisation (4).
- Procédé de localisation selon la revendication 5 ou 6, caractérisé en ce que, pour chaque position enregistrée sur le premier moyen de mémorisation (4) :on détermine une distance estimée séparant ladite position de la position précédente et/ou suivante dans la succession de positions enregistrées sur le premier moyen de mémorisation (4), par calcul à partir des coordonnées desdites positions,on calcule l'écart entre cette distance estimée et la distance parcourue enregistrée avec les positions dans le premier moyen de mémorisation (4),on ne retient, pour l'élaboration de la trajectoire, parmi les positions enregistrées sur le premier moyen de mémorisation (4), que celles pour lesquelles cet écart est inférieur à une valeur déterminée.
- Procédé de localisation selon l'une des revendications précédentes, caractérisé en ce qu'on enregistre, sur le premier moyen de mémorisation (4), avec chaque nouvelle position en provenance du moyen de localisation (1), l'orientation du véhicule.
- Procédé de localisation selon l'une des revendications précédentes, caractérisé en ce que le véhicule comporte un moyen d'alerte (6) qui, lorsqu'il détecte un accident, déclenche le moyen de communication mobile (7) qui transmet automatiquement à un moyen de communication fixe (9) situé dans un central d'appels, les informations présentes dans le premier moyen de mémorisation (4), ainsi que la dernière position fournie par le module de localisation (1), accompagnée de la distance parcourue, ou, si cette information n'est pas disponible, du temps écoulé depuis la communication de cette position.
- Véhicule équipé pour bénéficier du procédé de localisation selon l'un quelconque des revendications 2 à 9, caractérisé en ce qu'il comporte:un module de localisation (1) fournissant régulièrement la position du véhicule,une unité de calcul (3) réalisant la mémorisation, dans une première mémoire (4), des positions successives du véhicule et des informations qui leurs sont liées : heure et éventuellement, distance parcourue ainsi que les caractéristiques du véhicule et de son équipement,un module de communication mobile (7) permettant la transmission des données mémorisées dans la première mémoire (4) et éventuellement de la voix,un premier module d'interface (5) permettant au conducteur du véhicule d'appeler des services d'assistance ou d'urgence,un second module d'interface (8) permettant de programmer les caractéristiques du véhicule et de son équipement.un module de détection d'accident (6).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9610885A FR2753290B1 (fr) | 1996-09-06 | 1996-09-06 | Procede de localisation d'un appel d'urgence |
FR9610885 | 1996-09-06 | ||
PCT/FR1997/001559 WO1998010397A1 (fr) | 1996-09-06 | 1997-09-05 | Procede de localisation d'un appel d'urgence |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0925567A1 EP0925567A1 (fr) | 1999-06-30 |
EP0925567B1 true EP0925567B1 (fr) | 2001-11-07 |
Family
ID=9495510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97938981A Revoked EP0925567B1 (fr) | 1996-09-06 | 1997-09-05 | Procede de localisation d'un appel d'urgence |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0925567B1 (fr) |
AU (1) | AU4122797A (fr) |
DE (1) | DE69708131T2 (fr) |
ES (1) | ES2163192T3 (fr) |
FR (1) | FR2753290B1 (fr) |
WO (1) | WO1998010397A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011000277A1 (de) | 2011-01-21 | 2012-07-26 | Technische Universität Darmstadt | Verfahren und Vorrichtung zur Ermittlung einer Unfallfolgenabschätzung |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2343071B (en) * | 1999-01-07 | 2000-09-06 | Michael John Dalgleish | Apparatus and method for improved object tracking |
ES2157757B1 (es) * | 1999-02-08 | 2002-03-01 | Rosich Alberto Vazquez | Procedimiento e instalacion para aviso de accidentes en vehiculos. |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2725064B1 (fr) * | 1994-09-27 | 1997-03-14 | Peugeot | Systeme de correlation cartographique pour un systeme d'aide a la navigation d'un vehicule automobile |
-
1996
- 1996-09-06 FR FR9610885A patent/FR2753290B1/fr not_active Expired - Fee Related
-
1997
- 1997-09-05 ES ES97938981T patent/ES2163192T3/es not_active Expired - Lifetime
- 1997-09-05 AU AU41227/97A patent/AU4122797A/en not_active Abandoned
- 1997-09-05 EP EP97938981A patent/EP0925567B1/fr not_active Revoked
- 1997-09-05 WO PCT/FR1997/001559 patent/WO1998010397A1/fr not_active Application Discontinuation
- 1997-09-05 DE DE69708131T patent/DE69708131T2/de not_active Revoked
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011000277A1 (de) | 2011-01-21 | 2012-07-26 | Technische Universität Darmstadt | Verfahren und Vorrichtung zur Ermittlung einer Unfallfolgenabschätzung |
Also Published As
Publication number | Publication date |
---|---|
DE69708131D1 (de) | 2001-12-13 |
WO1998010397A1 (fr) | 1998-03-12 |
ES2163192T3 (es) | 2002-01-16 |
AU4122797A (en) | 1998-03-26 |
EP0925567A1 (fr) | 1999-06-30 |
FR2753290A1 (fr) | 1998-03-13 |
DE69708131T2 (de) | 2002-06-20 |
FR2753290B1 (fr) | 1998-11-27 |
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