EP0715286B1 - Méthode pour réduire la quantité de données qui doit être transmise par véhicules d'une flotte de véhicules témoins - Google Patents

Méthode pour réduire la quantité de données qui doit être transmise par véhicules d'une flotte de véhicules témoins Download PDF

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Publication number
EP0715286B1
EP0715286B1 EP95250278A EP95250278A EP0715286B1 EP 0715286 B1 EP0715286 B1 EP 0715286B1 EP 95250278 A EP95250278 A EP 95250278A EP 95250278 A EP95250278 A EP 95250278A EP 0715286 B1 EP0715286 B1 EP 0715286B1
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EP
European Patent Office
Prior art keywords
vehicles
vehicle
data
exchange group
central computer
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.)
Expired - Lifetime
Application number
EP95250278A
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German (de)
English (en)
Other versions
EP0715286A1 (fr
Inventor
Christian Dipl.-Ing. Hort
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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Filing date
Publication date
Priority claimed from DE19517309A external-priority patent/DE19517309C2/de
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0715286A1 publication Critical patent/EP0715286A1/fr
Application granted granted Critical
Publication of EP0715286B1 publication Critical patent/EP0715286B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a method for reducing an Vehicles of a sample vehicle fleet to be transferred from Vehicle data, information about the operating status and / or the environment of the vehicles contain, and position data, the information about the position of the Vehicles in a predetermined coordinate system for a specific one Contain time after recording the accruing vehicle and position data in an interval in the vehicle itself for wireless transmission of the vehicle and Position data to a central computer, the interval of a predetermined Time span or a predetermined distance.
  • the invention provides that the vehicle and position data between at least some vehicles in the sample vehicle fleet that form an exchange group, be exchanged and the prepared vehicle and position data of one Exchange group by a selected vehicle from this exchange group be transferred to the central computer.
  • the preparation can initially in each Sample vehicle and then from the selected vehicle to the Central computer to be forwarded or the data is only through that for the Prepared communication with the central computer selected vehicle.
  • a particularly simple assignment of the sample vehicles to one Exchange group is achieved in that everyone is predetermined in one Vehicles in the sample vehicle fleet form.
  • the sample vehicles exchanging the data can with this Prerequisite based on the position data of another vehicle received information immediately and without inquiry or selection process decide whether it is a vehicle of your own exchange group and thus information to be considered.
  • all immediately adjacent vehicles in the sample vehicle fleet one Form an exchange group. This is useful because it is immediate neighboring vehicles the likelihood that similar vehicle data will be acquired become relatively large.
  • a further embodiment provides that everyone is on the same Road stop vehicles of the sample vehicle fleet an exchange group form. Also in this case the likelihood is that similar vehicle data be detected, relatively large.
  • the amount of data to be transmitted by the exchange group can in particular thereby be kept low that the processed vehicle data only if this themselves or their change exceed a predetermined tolerance value, and the Position data, regularly after covering a certain distance or after a specified period of time has elapsed, through which the Central computer communicating vehicle of the exchange group to the Central computer are transmitted.
  • the position of the exchange group it is preferably provided that at least part of the vehicle data averaged over the exchange group and with regard to the geographical position of the group only the position data of the with the Central computer communicating vehicle transmitted to the central computer , which further reduces the amount of data to be transferred.
  • the Invention proposed, position data and averaged over the exchange group an average radius of expansion of the exchange group to the central computer to transfer.
  • This position data can be obtained by additional transmission of the middle one Fluctuation range of the average radius of expansion of the exchange group to the Central computer can be completed in a simple manner.
  • the vehicle and position data of the exchange group transmitted to the central computer via a radio telephone.
  • An advantageous embodiment of the invention provides that the vehicles Exchange group the vehicle and position data via short-range communication facilities, especially short-range transmitters and receivers, exchange with each other. This will significantly relieve the strain on the radio telephone network reached.
  • 1 and 2 show the course of a freeway section and several Road sections.
  • the Road sections are the positions of the sample vehicles at a time certain point in time in the form of black dots, which are in a Move the direction of the motorway and road sections.
  • a vehicle in a sample fleet has sensors installed in the vehicle that continuously changing state variables such as B. the speed that Engine speed, outside temperature, humidity, etc.
  • the Vehicle also has sensors that detect discrete state variables, such as. B. the Position of various switches (wipers, lights, fog lights, Rear window heating, etc.) record.
  • the vehicle is still with devices equipped, the operation of active devices (actuators) such.
  • the GPS receiver continuously generates in predetermined time intervals position data that the current position (length, Width, time) of the vehicle in a predetermined coordinate system (Longitude, latitude) contains.
  • the sensors and devices data generated to indicate the operation of the actuators form the vehicle data, from which a central computer in connection with the corresponding position data (including the associated time data) information or predictions about the Traffic situation and road conditions can be calculated.
  • sample vehicles are in groups summarized, the points in a circle (vehicles) each one Form an exchange group. Individual vehicles can also have several Belong to exchange groups.
  • the sample vehicle F6 in FIG. 1 belongs for example, two exchange groups.
  • Position data includes the vehicles in the sample vehicle fleet Communication facilities equipped so that several vehicles each Sample vehicle fleet their vehicle and position data among themselves can exchange. In the case outlined in FIG. 1, neighboring ones swap Sample vehicles their data.
  • the communication facilities, short-range transmitters and receivers in particular are designed so that they only have limited range.
  • a predetermined vehicle each Exchange group prepares the vehicle and position data. The preparation of the For example, vehicle data can be such that all are continuously changing State variables of the sample vehicles of an exchange group are averaged and the state with the greatest frequency is determined for the discrete state variables becomes.
  • the average activity of the actuators in the vehicles of the exchange group can can be recorded by adding up the number of activities and by the number the sample vehicles belonging to the exchange group is divided.
  • Preparation of the vehicle data is carried out together with the position data of the communicating with the central computer, predetermined vehicle to the Central computer transmitted.
  • This procedure is useful because the one Exchange group belonging vehicles only a relatively small spatial Have a distance from each other and often even drive on the same road.
  • a part of Vehicle data for example the status "airbag triggered”, is generated directly, ie without Preparation, forwarded to the central computer.
  • the transmission of the vehicle and Position data of the exchange group to the central computer through the The predetermined vehicle is expediently carried out via a radio telephone network.
  • the central computer instead of the position data communicating vehicle, the position data of all vehicles of the Exchange group to average, an average radius of expansion of the exchange group and to determine the mean fluctuation range of the radius of expansion and the like certain exchange group position, the radius of expansion and its Fluctuation range as position data of the exchange group to the central computer to transfer.
  • the road network with the sample vehicles according to FIG. 1 is the same divided large areas.
  • all are Sample vehicles assigned to an exchange group that are in one of the same large areas a1-d3.
  • vehicles F4, F5, F9 in area b1 an exchange group.
  • the short-range communication facilities of the sample vehicles is carried out in such a way that in addition to the vehicle data, only an identifier of the area field is sent, by the vehicle currently being sent out.
  • the short-range receivers only let the received signals pass that have the same identifier.
  • only the sample vehicles that communicate with each other stay in the same area and form an exchange group.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Claims (14)

  1. Procédé de réduction de la quantité de données de véhicule, qui comprennent des informations sur l'état de fonctionnement et/ou l'environnement des véhicules, et de données de positionnement, qui comprennent des informations sur la position des véhicules à un moment donné dans un système de coordonnées prédéfini, à transmettre à partir de véhicules d'une flotte de véhicules témoins, après l'enregistrement des données de véhicule et de positionnement existantes, dans un intervalle, dans le véhicule lui-même en vue de la transmission radioélectrique des données de véhicule et de positionnement à un calculateur central, l'intervalle correspondant à un laps de temps prédéfini ou à une distance prédéfinie,
       caractérisé en ce que
       les données de véhicule et de positionnement peuvent être échangées entre au moins quelques véhicules de la flotte de véhicules témoins qui forment un groupe d'échange et en ce qu'elles sont mises en forme et que les données de véhicule et de positionnement d'un groupe d'échange mises en forme sont à chaque fois transmises au calculateur central par un véhicule sélectionné au sein de ce groupe d'échange.
  2. Procédé selon la revendication 1,
       caractérisé en ce que
       tous les véhicules de la flotte de véhicules témoins se trouvant dans une zone prédéterminée constituent à chaque fois un groupe d'échange.
  3. Procédé selon la revendication 1,
       caractérisé en ce que
       tous les véhicules de la flotte de véhicules témoins qui sont immédiatement voisins forment à chaque fois un groupe d'échange.
  4. Procédé selon la revendication 1,
       caractérisé en ce que
       tous les véhicules de la flotte de véhicules témoins empruntant la même route forment à chaque fois un groupe d'échange.
  5. Procédé selon l'une des revendications 1 à 4,
       caractérisé en ce que
       les données de véhicule et de positionnement du groupe d'échange sont mises en forme et transmises au calculateur central par un véhicule prédéfini dudit groupe.
  6. Procédé selon l'une des revendications 1 à 5,
       caractérisé en ce que
       les données de véhicule mises en forme, si elles-mêmes ou leur variation excèdent une valeur de tolérance prédéterminée, et les données de positionnement sont transmises régulièrement, après le parcours d'une distance déterminée ou après dépassement d'un laps de temps prédéfini, par le véhicule du groupe d'échange qui communique avec le calculateur central.
  7. Procédé selon l'une des revendications 1 à 6,
       caractérisé en ce que
       au moins une partie des données de véhicule dont on a fait la moyenne au niveau du groupe d'échange sont transmises au calculateur central en même temps que les données de positionnement du véhicule qui communique avec le calculateur central.
  8. Procédé selon la revendication 7,
       caractérisé en ce que
       des données de positionnement dont on a fait la moyenne au niveau du groupe d'échange et un rayon d'extension moyen du groupe d'échange sont transmis au calculateur central.
  9. Procédé selon la revendication 8,
       caractérisé en ce que
       l'amplitude de variation moyenne du rayon d'extension moyen du groupe d'échange est transmise au calculateur central.
  10. Procédé selon l'une des revendications 1 à 9,
       caractérisé en ce que
       le nombre de véhicules qui font partie du groupe d'échange est transmis au calculateur central.
  11. Procédé selon l'une des revendications 1 à 10,
       caractérisé en ce que
       les véhicules d'un groupe d'échange échangent entre eux les données de véhicule et de positionnement par l'intermédiaire de dispositifs de communication à courte portée, notamment des émetteurs et des récepteurs à courte portée.
  12. Procédé selon l'une des revendications 1 à 11,
       caractérisé en ce que
       les données de véhicule et de positionnement du groupe d'échange sont transmises au calculateur central par l'intermédiaire d'un radiotéléphone.
  13. Procédé selon l'une des revendications 1 à 12,
       caractérisé en ce que
       l'enregistrement des données dans les véhicules et l'échange des données entre les véhicules du groupe d'échange soient commandés par un ordinateur de bord.
  14. Procédé selon l'une des revendications 1 à 13,
       caractérisé en ce que
       le calculateur central détermine la position géographique courante à partir des données de positionnement de la position géographique courante si celles-ci ne constituent pas déjà elles-mêmes une indication explicite de la position.
EP95250278A 1994-11-28 1995-11-16 Méthode pour réduire la quantité de données qui doit être transmise par véhicules d'une flotte de véhicules témoins Expired - Lifetime EP0715286B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4444389 1994-11-28
DE4444389 1994-11-28
DE19517309 1995-05-03
DE19517309A DE19517309C2 (de) 1994-11-28 1995-05-03 Verfahren zur Reduzierung eines aus den Fahrzeugen einer Stichprobenfahrzeugflotte zu übertragenden Datenmenge

Publications (2)

Publication Number Publication Date
EP0715286A1 EP0715286A1 (fr) 1996-06-05
EP0715286B1 true EP0715286B1 (fr) 1999-01-07

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EP95250278A Expired - Lifetime EP0715286B1 (fr) 1994-11-28 1995-11-16 Méthode pour réduire la quantité de données qui doit être transmise par véhicules d'une flotte de véhicules témoins

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EP (1) EP0715286B1 (fr)
AT (1) ATE175514T1 (fr)
ES (1) ES2126210T3 (fr)

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DE19729105A1 (de) * 1997-07-08 1999-01-14 Bosch Gmbh Robert Einrichtung zur Übertragung von Daten
JP3268239B2 (ja) * 1997-08-21 2002-03-25 三菱重工業株式会社 走行車両群制御方法
DE19740602B4 (de) * 1997-09-16 2009-06-04 T-Mobile Deutschland Gmbh Verkehrsleit-, Informations- und Positionierungssystem (VIPS)
US6047234A (en) 1997-10-16 2000-04-04 Navigation Technologies Corporation System and method for updating, enhancing or refining a geographic database using feedback
DE19750942A1 (de) * 1997-11-17 1999-05-20 Delphi 2 Creative Tech Gmbh Verfahren und Vorrichtung zum Signalisieren von lokalen Verkehrsstörungen
DE19822914A1 (de) 1998-05-22 1999-11-25 Alcatel Sa Verfahren zur Informationsübertragung von Fahrzeugdaten und Verkehrsinformationssystem
JP3736663B2 (ja) * 1998-06-12 2006-01-18 本田技研工業株式会社 移動体検出システム
FR2784486A1 (fr) * 1998-10-13 2000-04-14 Roland Moreno Procede de traitement d'informations de circulation routiere ou urbaine a partir d'un terminal embarque dans un vehicule et relie par voie hertzienne a un site distant
US6381537B1 (en) 2000-06-02 2002-04-30 Navigation Technologies Corp. Method and system for obtaining geographic data using navigation systems
WO2002008695A1 (fr) * 2000-07-25 2002-01-31 Volkswagen Ag Procede pour mettre a disposition des donnees concernant la circulation routiere
US6587781B2 (en) 2000-08-28 2003-07-01 Estimotion, Inc. Method and system for modeling and processing vehicular traffic data and information and applying thereof
EP1695317B1 (fr) 2003-12-19 2008-10-08 Bayerische Motoren Werke Aktiengesellschaft Identification d'etat du trafic par un procede de valeurs seuils
US7620402B2 (en) 2004-07-09 2009-11-17 Itis Uk Limited System and method for geographically locating a mobile device
WO2006060518A2 (fr) 2004-11-30 2006-06-08 Circumnav Networks, Inc. Procedes et systemes destines a deduire la geometrie et la connectivite d'une route
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ES2126210T3 (es) 1999-03-16
EP0715286A1 (fr) 1996-06-05
ATE175514T1 (de) 1999-01-15

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