EP0925567B1 - Verfahren zur lokalisierung eines notrufs - Google Patents

Verfahren zur lokalisierung eines notrufs Download PDF

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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
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EP
European Patent Office
Prior art keywords
vehicle
memory means
positions
recorded
tracking
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Revoked
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EP97938981A
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English (en)
French (fr)
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EP0925567A1 (de
Inventor
Jean-Michel Valade
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
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Renault SAS
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Application filed by Renault SAS filed Critical Renault SAS
Publication of EP0925567A1 publication Critical patent/EP0925567A1/de
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    • 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)

Claims (10)

  1. Verfahren zur Ortung eines mit einem Ortungsmittel (1), zum Beispiel einem GPS-Empfänger, ausgestatteten Fahrzeugs, das auf der Aufzeichnung einer Folge von Positionen, die von dem Ortungsmittel (1) geliefert werden, in einem ersten Speichermittel (4), auf der Ermittlung eines Weges anhand dieser Positionen und auf dem Vergleich des erhaltenen Weges mit den zuvor in einem zweiten Speichermittel (11) gespeicherten angrenzenden Straßenabschnitten beruht, um die Straße zu bestimmen, auf der sich das Fahrzeug befindet, dadurch gekennzeichnet, daß:
    das erste Speichermittel (4) in dem Fahrzeug montiert ist,
    das Fahrzeug ein mobiles Kommunikationsmittel (7) aufweist, das die Folge der in dem ersten Speichermittel (4) aufgezeichneten Positionen an eine Rufzentrale überträgt, und
    sich das zweite Speichermittel (11) in der Rufzentrale befindet, wo der Vergleich zwischen dem anhand der Positionen ermittelten Weg und den in dem zweiten Speichermittel (11) gespeicherten Straßenpositionen durchgeführt wird.
  2. Ortungsverfahren nach Anspruch 1, dadurch gekennzeichnet, daß das mobile Kommunikationsmittel (7) ein zellulares Funktelefon ist.
  3. Ortungsverfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Bestimmung der von dem Fahrzeug befahrenen Straße durch mathematische Korrelation zwischen dem Weg und jedem der angrenzenden Straßenabschnitte erfolgt.
  4. Ortungsverfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß auf demselben Anzeigemittel (12) der Ort, welcher der Position des Fahrzeugs entspricht, und, in Überblendung, der Weg, der anhand der auf dem ersten Speichermittel aufgezeichneten Positionen ermittelt wurde, angezeigt wird, um einem Benutzer die graphische Bestimmung der von dem Fahrzeug befahrenen Straße zu ermöglichen.
  5. Ortungsverfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß auf dem ersten Speichermittel (4) mit jeder neuen von dem Ortungsmittel (1) kommenden Position die Stunde und die von dem Fahrzeug seit der vorhergehenden Ortung durchfahrene Strecke aufgezeichnet wird.
  6. Ortungsverfahren nach Anspruch 5, dadurch gekennzeichnet, daß eine neue von dem Ortungsmittel (1) kommende Position nur dann auf dem ersten Speichermittel (4) aufgezeichnet wird, wenn die seit der vorhergehenden aufgezeichneten Position durchfahrene Strecke größer als ein bestimmter Wert ist, und daß in diesem Fall die am weitesten zurückliegend eingenommene Position von dem Speichermittel (4) gelöscht wird.
  7. Ortungsverfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß für jede auf dem ersten Speichermittel (4) aufgezeichnete Position:
    eine geschätzte Strecke, welche diese Position von der vorhergehenden und/oder folgenden Position in der auf dem ersten Speichermittel (4) aufgezeichneten Folge von Positionen trennt, durch Berechnung anhand der Koordinaten dieser Positionen bestimmt wird,
    die Differenz zwischen dieser geschätzten Strecke und der mit den Positionen in dem ersten Speichermittel (4) aufgezeichneten durchfahrenen Strecke berechnet wird,
    zur Ermittlung des Weges von den auf dem ersten Speichermittel (4) aufgezeichneten Positionen nur diejenigen berücksichtigt werden, bei denen diese Differenz kleiner als ein bestimmter Wert ist.
  8. Ortungsverfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß auf dem ersten Speichermittel (4) mit jeder neuen von dem Ortungsmittel (1) kommenden Position die Orientierung des Fahrzeugs aufgezeichnet wird.
  9. Ortungsverfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Fahrzeug ein Alarmmittel (6) aufweist, das, wenn es einen Unfall erfaßt, das mobile Kommunikationsmittel (7) auslöst, welches automatisch an ein ortsfestes Kommunikationsmittel (9), das sich in einer Rufzentrale befindet, die in dem ersten Speichermittel (4) vorhandenen Informationen sowie die letzte von dem Ortungsmodul (1) gelieferte Position, begleitet von der seit der Übermittlung dieser Position durchfahrenen Strecke oder, wenn diese Information nicht verfügbar ist, von der seit der Übermittlung dieser Position verflossenen Zeit, überträgt.
  10. Fahrzeug, das ausgerüstet ist, um aus dem Ortungsverfahren nach einem der Ansprüche 2 bis 9 Nutzen zu ziehen, dadurch gekennzeichnet, daß es aufweist:
    ein Ortungsmodul (1), der regelmäßig die Position des Fahrzeugs liefert,
    ein Rechenwerk (3), das, in einem ersten Speicher (4), die Speicherung der aufeinanderfolgenden Positionen des Fahrzeugs und der Informationen durchführt, die mit ihnen verbunden sind: Stunde und gegebenenfalls durchfahrene Strecke sowie die Merkmale des Fahrzeugs und seiner Ausstattung,
    ein mobiles Kommunikationsmodul (7), der die Übertragung der in dem ersten Speicher (4) gespeicherten Daten und gegebenenfalls der Stimme gestattet,
    einen ersten Schnittstellenmodul (5), der es dem Fahrer des Fahrzeugs ermöglicht, Hilfs- oder Notdienste zu rufen,
    ein zweites Schnittstellenmodul (8), der die Programmierung der Merkmale des Fahrzeugs und seiner Ausstattung ermöglicht,
    ein Modul zur Erfassung eines Unfalls (6).
EP97938981A 1996-09-06 1997-09-05 Verfahren zur lokalisierung eines notrufs Revoked EP0925567B1 (de)

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 (de) 1999-06-30
EP0925567B1 true EP0925567B1 (de) 2001-11-07

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ID=9495510

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EP97938981A Revoked EP0925567B1 (de) 1996-09-06 1997-09-05 Verfahren zur lokalisierung eines notrufs

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EP (1) EP0925567B1 (de)
AU (1) AU4122797A (de)
DE (1) DE69708131T2 (de)
ES (1) ES2163192T3 (de)
FR (1) FR2753290B1 (de)
WO (1) WO1998010397A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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
EP0925567A1 (de) 1999-06-30
DE69708131D1 (de) 2001-12-13
DE69708131T2 (de) 2002-06-20
WO1998010397A1 (fr) 1998-03-12
AU4122797A (en) 1998-03-26
FR2753290A1 (fr) 1998-03-13
FR2753290B1 (fr) 1998-11-27
ES2163192T3 (es) 2002-01-16

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