EP0931301B1 - Procede et dispositif pour la transmission de donnees pour l'evaluation de la situation du trafic - Google Patents

Procede et dispositif pour la transmission de donnees pour l'evaluation de la situation du trafic Download PDF

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Publication number
EP0931301B1
EP0931301B1 EP97912055A EP97912055A EP0931301B1 EP 0931301 B1 EP0931301 B1 EP 0931301B1 EP 97912055 A EP97912055 A EP 97912055A EP 97912055 A EP97912055 A EP 97912055A EP 0931301 B1 EP0931301 B1 EP 0931301B1
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EP
European Patent Office
Prior art keywords
data
vehicle
traffic
travel profile
properties
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
Application number
EP97912055A
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German (de)
English (en)
Other versions
EP0931301A1 (fr
Inventor
Klaus Möhlenkamp
Thomas Müller
Werner Schulz
Stefan Vieweg
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0931301A1 publication Critical patent/EP0931301A1/fr
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Anticipated expiration legal-status Critical
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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
    • G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
    • 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]
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/09675—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where a selection from the received information takes place in the vehicle
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096775—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station

Definitions

  • the invention relates to a method for wireless transmission of data for Traffic situation assessment in sections of a road network to one Head office, the data being recorded in a large number of vehicles using appropriate sensors for data acquisition and in traffic flow along (floating cars), as well as a device for performing this method.
  • the object of the invention is to provide a generic method in this regard to further develop that the data transmission from the vehicles to a Headquarters is limited as much as possible to data that is large Provide meaningfulness for the traffic situation assessment.
  • a Apparatus for performing this method can be specified.
  • a Device for performing this method has the features of Claim 10 on. Claims 11 to 17 characterize expedient Embodiments of this device.
  • the method according to the invention makes the transmission redundant or not relevant data to a minimum.
  • the starting point of the invention is the consideration that such data, which the existing in a central (or probably existing) picture of a traffic situation, in itself are uninteresting and therefore if possible not from the individual vehicles that are used Data collection are used, should be transmitted. This must be in the individual vehicles are each objectively recognizable to a corresponding Decision to carry out or refrain from transferring data from the To be able to hit the vehicle.
  • the basis of the invention is sensor data generated in the vehicle.
  • This Sensor data are, for example, recorded cyclically and temporarily in the vehicle saved and evaluated.
  • the sum of the sensor data results in a "driving profile".
  • On Driving profile is a general description of driving behavior for one certain distance or over a certain time.
  • Simple forms of a Driving profiles are the speed driven as a function of time (Speed-time diagram), the place as a function of time (place-time diagram) or the speed as a function of the location. Of course you can other sensor data such as steering angle, acceleration or the like are used for this become.
  • a driving profile is actually "driven” and describes the actual behavior of the vehicle.
  • the invention provides that in each case one of the sensor data recorded in the vehicle current driving profile is formed and that in the vehicle from the current driving profile characteristic properties in the sense of actual values are derived. Further is provided that in the vehicle based on predetermined traffic situation information characteristic driving profile properties in the sense of expected values become.
  • the expected values of the driving profile properties are preferred based on traffic information that is wirelessly in the vehicle are currently being received (e.g. as part of the traffic information from Radio broadcasts).
  • the expected values of the driving profile properties are shown in the Within the scope of the invention compared with the actual values of the driving profile properties. The differences determined by the comparison are then based on predetermined ones Decision criteria evaluated in the vehicle. The transmission of the recorded data to According to this assessment, the head office only takes place in cases where this is the case is provided according to the decision criteria.
  • the driving profile properties in the sense of the present invention serve a To summarize driving profile in a few criteria or parameters to it then in the simplest possible way on compatibility with a fictitious driving profile, that of the respective traffic situation according to the traffic information received corresponds to being able to check.
  • the middle one Speed in a given time or distance interval as characteristic property can be used.
  • Another evaluable Property would be the values of the smallest and the highest speed in an interval (threshold values).
  • the measured driving profile could be based on the actual Travel time can be evaluated.
  • the measurement of jam lengths is also based on this Way possible, d.
  • H. the measured driving profile is then evaluated via which distance the usual speed is reduced.
  • one more complex description such as B. a classification in "stop-and-go", "free” and other categories would be a driving profile property in the sense of the invention.
  • the decisive step of the invention is the formation of expected values from the received traffic information and triggering a message as soon as that Vehicle finds (i.e., measures) a situation other than expected.
  • the peculiarity is therefore that the vehicle is now the image of the center on the Traffic "knows” and independently checks, especially falsified.
  • DE 19 13 640 A1 assigns a "role” to the vehicle in the framework of which he reports traffic data to the head office, and only that Central knows the traffic situation.
  • vehicles such. B. as "Traffic jam detector” function and when entering a traffic jam this event report regularly. This is repeated with every new "floating car” entering.
  • the traffic jam information is then already known at the head office. Through the present invention will transfer this redundant information from the Vehicle suppressed.
  • the transmission of the current traffic information can of course also to the vehicles in a different way than via radio, e.g. through cellular Mobile radio according to the GSM standard.
  • Heuristic traffic situation data can also be used for this be taken as a basis. In this case, it is particularly recommended that heuristic traffic situation data for the respective route section in the sense of a self-learning system based on the recorded sensor data in the vehicle modify and save to improve their informative value.
  • the Determining the driving profile should at least include the time, location and Speed of the vehicle are taken as a basis.
  • each vehicle may be appropriate be predefinable from the outside. So it is particularly advantageous if the control center that is to receive the data by means of wireless communication Decision criteria for the vehicles (e.g. in a certain area) can transmit, so that immediate changes are possible if necessary, without the individual vehicles for a corresponding update, for example a workshop need to seek out.
  • the end device used in the vehicle should therefore take into account the decision-making process can be parameterized, d. H. that comparison criteria and Sensitivity of the decision-making process should be specifiable by the head office.
  • the functionalities taking place in the vehicle and arranged in the vehicle Devices are highlighted by a dashed outline.
  • About one Receiver can wirelessly transmit traffic information to the vehicle received, e.g. via radio, a broad cast service or a pager service can be broadcast.
  • the traffic information is preferably in coded form. Different methods can be used for this, e.g. ALERT-C can be used. It does not primarily matter by whom Traffic information comes from whether it's through a broadcaster, for example be broadcast or from the central office, which provides the data on the traffic situation should capture. The for the section of the route just traveled by the vehicle relevant traffic information forms the "traffic situation".
  • characteristic driving profile properties are derived from this Meaning derived from expected values, which in the figure as expected Driving profile properties are designated.
  • education can the characteristic driving profile properties, for example in the definition of a Speed thresholds exist. But it can also highly complex assumptions about typical driving profiles can be made.
  • the implementation algorithms from the central office (e.g. wirelessly) to provide a uniform implementation for all "floating cars ".
  • Sensors can collect measurement data relevant to driving. This usually includes in addition to the time, in particular the speed and current position of the Vehicle. For determining the position, one can preferably be based on the Detection device working with satellite navigation may be provided.
  • This Setup can be directly part of the implementation of the invention provided device, or the device is attached to such Location position determination device connected.
  • actual Driving profile which is formed by the time series of the sensor data
  • the device comprises furthermore a comparator in which the actual driving profile properties with the expected driving profile properties are compared.
  • the comparison results are suitable for the comparator from a memory Decision criteria fed. Depending on whether the comparison operation in Comparator has led to the result that a serious deviation from the expected traffic situation is present or not, is via one of the invention Device associated transmitter given a corresponding message to the headquarters or not.
  • the device according to the invention has a second receiver, by the the control center from changed decision criteria in the memory of the vehicle can be transmitted.
  • the Receiver for the traffic information and the receiver for the Decision criteria are physically identical.
  • heuristic information is stored in static form in the vehicle.
  • Such heuristics can e.g. in the form of curve lines or similar, the Methods accessible to a person skilled in the art are presented. So that one of the Expected driving profile depending on the time of day. In principle it is too possible to refine the meaningfulness of the heuristic information Modify maintenance and care from outside (preferably from the head office) or to update. The possibility of an independent update in the sense of a self-learning system has already been pointed out.
  • a device for navigating the vehicle can be in the vehicle be provided, which via a satellite-based positioning device and a e.g. digital road map stored on CD-ROM an exact determination of the current location of the vehicle and its assignment to a certain section of the road network allowed. That way the device according to the invention on the knowledge that the vehicle is current e.g. "located on the A3 motorway between junctions X and Y". If the device according to the invention provides traffic information with the content "traffic jam on the A3 between junction X and Y, length 6 km "receives this information implemented in a corresponding driving profile with characteristic properties become.
  • the vehicle expects a typical stop-and-go driving profile. Is the route in question on the A3 between junction X and Y now unexpectedly free, then the actual vehicle speed should be clear be higher and smoother than expected.
  • the Comparator detects these deviations and is able to use the Decision criteria determine that the data of the actual driving profile expediently should be transmitted to the head office, since the actual Deviations were unacceptably high. In this relatively simple way it is possible to determine the amount of data transmitted by a fleet of "floating cars" Limit traffic situation recording to a central office to a relatively small size.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Traffic Control Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Claims (17)

  1. Procédé de transmission sans fil de données vers une centrale pour juger de la situation du trafic dans des sections de trajets d'un réseau routier, les données étant détectées dans plusieurs véhicules qui sont équipés d'un dispositif capteur approprié pour la détection de données et qui se trouvent dans le trafic ("floating cars") et un profil de conduite actuel étant formé à chaque fois à partir des données de capteurs détectées dans le véhicule,
       caractérisé en ce que
    on déduit, dans le véhicule, à partir du profil de conduite actuel, des propriétés caractéristiques dans le sens de valeurs réelles,
    on forme, dans le véhicule, à l'aide d'informations de situation de trafic prédéterminées, des propriétés de profil de conduite caractéristiques dans le sens de valeurs attendues,
    on compare les valeurs réelles et les valeurs attendues des propriétés de profil de conduite,
    on évalue, dans le véhicule, les différences déterminées par la comparaison à l'aide de critères de décision prédéterminés, et
    la transmission des données vers la centrale pour juger de la situation du trafic n'a lieu à chaque fois que dans les cas où cela est prévu selon les critères de décision.
  2. Procédé selon la revendication 1,
       caractérisé en ce qu'on forme les valeurs attendues des propriétés de profil de conduite à l'aide d'informations de trafic qui sont reçues de façon actuelle sans fil dans le véhicule.
  3. Procédé selon la revendication 1,
       caractérisé en ce qu'on forme les valeurs attendues des propriétés de profil de conduite à l'aide de données de situation de trafic pronostiquées.
  4. Procédé selon la revendication 1,
       caractérisé en ce qu'on forme les valeurs attendues des propriétés de profil de conduite à l'aide de données de situation de trafic heuristiques prédéfinies.
  5. Procédé selon la revendication 4,
       caractérisé en ce qu'on modifie et on mémorise dans le véhicule, à l'aide des données de capteurs détectées, les données de situation de trafic heuristiques pour la section de trajet respective dans le sens d'un système auto-adaptatif.
  6. Procédé selon une des revendications 1 à 4,
       caractérisé en ce que la détermination du profil de conduite contient au moins les grandeurs : temps, lieu et vitesse du véhicule.
  7. Procédé selon la revendication 2,
       caractérisé en ce qu'on transmet les informations de trafic vers le véhicule par l'intermédiaire d'un réseau de radiocommunication mobile cellulaire.
  8. Procédé selon la revendication 2,
       caractérisé en ce qu'on transmet les informations de trafic vers le véhicule par l'intermédiaire d'un réseau de radiocommunication du type "broadcast", notamment par l'intermédiaire d'une radiodiffusion ou d'un réseau du type "paging".
  9. Procédé selon une des revendications 1 à 8,
       caractérisé en ce qu'on prédéfinit par la centrale les critères de décision, au moyen d'une communication sans fil, dans le véhicule et on les modifie si nécessaire.
  10. Dispositif pour la mise en oeuvre du procédé selon la revendication 1, comportant un dispositif capteur agencé dans un véhicule pour déterminer des données de profil de conduite et comportant un dispositif émetteur pour transmettre sans fil des données vers une centrale afin de juger de la situation du trafic,
       caractérisé en ce que
    il est prévu un dispositif qui est destiné à la mémorisation et au traitement de données et qui détermine des propriétés d'un profil de conduite réel et d'un profil de conduite attendu,
    il est prévu un comparateur qui est destiné à la comparaison des propriétés du profil de conduite réel et du profil de conduite attendu,
    une mémoire pour des critères de décision est raccordée au comparateur, et
    le dispositif émetteur peut être branché, en fonction du résultat de décision du comparateur, à la centrale afin de transmettre les données.
  11. Dispositif selon la revendication 10,
       caractérisé en ce qu'il est prévu un premier dispositif récepteur pour la réception d'informations de trafic actuelles.
  12. Dispositif selon la revendication 11,
       caractérisé en ce que le premier dispositif récepteur est installé pour fonctionner dans un réseau de radiocommunication mobile cellulaire, notamment dans un réseau GSM.
  13. Dispositif selon la revendication 11,
       caractérisé en ce que le premier dispositif récepteur est installé pour un réseau radio du type "broadcast", notamment pour un réseau de radio ou pour un réseau du type "paging".
  14. Dispositif selon une des revendications 10 à 13,
       caractérisé en ce qu'il est prévu un deuxième dispositif récepteur grâce auquel des critères de décision transmis par la centrale pour le comparateur peuvent être reçus.
  15. Dispositif selon une des revendications 10 à 14,
       caractérisé en ce qu'il est prévu un dispositif de mémorisation pour une carte routière numérique.
  16. Dispositif selon une des revendications 10 à 15,
       caractérisé en ce que le dispositif contient une unité pour la détermination de la position actuelle du véhicule ou est raccordé à une telle unité.
  17. Dispositif selon la revendication 16,
       caractérisé en ce que l'unité de détermination de position travaille sur la base de la navigation par satellites.
EP97912055A 1996-10-10 1997-10-07 Procede et dispositif pour la transmission de donnees pour l'evaluation de la situation du trafic Revoked EP0931301B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19643454A DE19643454C2 (de) 1996-10-10 1996-10-10 Verfahren und Vorrichtung zur Übermittlung von Daten zur Verkehrslagebeurteilung
DE19643454 1996-10-10
PCT/DE1997/002360 WO1998015935A1 (fr) 1996-10-10 1997-10-07 Procede et dispositif pour la transmission de donnees pour l'evaluation de la situation du trafic

Publications (2)

Publication Number Publication Date
EP0931301A1 EP0931301A1 (fr) 1999-07-28
EP0931301B1 true EP0931301B1 (fr) 2000-05-24

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EP97912055A Revoked EP0931301B1 (fr) 1996-10-10 1997-10-07 Procede et dispositif pour la transmission de donnees pour l'evaluation de la situation du trafic

Country Status (6)

Country Link
US (1) US6178374B1 (fr)
EP (1) EP0931301B1 (fr)
JP (1) JP3382625B2 (fr)
AT (1) ATE193391T1 (fr)
DE (2) DE19643454C2 (fr)
WO (1) WO1998015935A1 (fr)

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DE19643454A1 (de) 1998-04-23
EP0931301A1 (fr) 1999-07-28
US6178374B1 (en) 2001-01-23
JP2000507732A (ja) 2000-06-20
DE59701785D1 (de) 2000-06-29
ATE193391T1 (de) 2000-06-15
JP3382625B2 (ja) 2003-03-04
DE19643454C2 (de) 2003-08-21

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