EP2026311B1 - Système pour déterminer des informations de trafic - Google Patents

Système pour déterminer des informations de trafic Download PDF

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Publication number
EP2026311B1
EP2026311B1 EP08104886A EP08104886A EP2026311B1 EP 2026311 B1 EP2026311 B1 EP 2026311B1 EP 08104886 A EP08104886 A EP 08104886A EP 08104886 A EP08104886 A EP 08104886A EP 2026311 B1 EP2026311 B1 EP 2026311B1
Authority
EP
European Patent Office
Prior art keywords
traffic
unit
vehicle
data
traffic data
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.)
Not-in-force
Application number
EP08104886A
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German (de)
English (en)
Other versions
EP2026311A1 (fr
Inventor
Paul Dr. Mathias
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.)
Siemens AG
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2026311A1 publication Critical patent/EP2026311A1/fr
Application granted granted Critical
Publication of EP2026311B1 publication Critical patent/EP2026311B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles

Definitions

  • the invention relates to a system for determining traffic information of a road network according to the preamble of claim 1.
  • Such systems are used to determine the current traffic condition in the road network, such as for a city, as well as the current traffic demands for the road network, ie the number of vehicles that want to drive from a starting point to a destination point in the road network.
  • traffic data at roadside measurement cross sections, which are formed by induction loops, passive infrared sensors or video detection cameras.
  • Traffic conditions for the road network are dynamically calculated from these macroscopic traffic data, from the switching states of traffic control or traffic management facilities, from current traffic disruption reports and from other planning surveys. These calculations use either heuristic knowledge, which is formulated in logical rules or decision tables, or traffic engineering models, which contain formalized knowledge about the dynamics of the transport system.
  • a traffic condition is usually described in the form of travel times or traffic loads for the routes of the road network.
  • FCD floating car data
  • a tolling system wherein in traffic signs electrical auxiliary devices are housed with data receivers, which receive radio signals from passing on the road sign motor vehicles.
  • the data receiver is a backscatter data receiver which emits a microwave-based interrogation signal.
  • This has a passive backscatter data transmitter for the modulated backscatter of the transmitted interrogation signal.
  • the electrical auxiliary devices transmit position data to a receiver in addition to the vehicle data.
  • the data transmitted from a motor vehicle is connected to the respective vehicle, i. In the toll center, the distances covered must be collected with the option of deducting the costs for a specific vehicle.
  • the invention is therefore based on the object, a system for determining traffic information of the aforementioned To provide a way of obtaining a broad database of microscopic traffic data.
  • An on-vehicle unit for wirelessly transmitting a vehicle identifying date which unit is configured to generate an anonymous identity data, allows a large number of vehicles to inexpensively transmit traffic data to trackside detection units. Due to the transmission of an anonymous identity date, there is no possibility on the part of the detection device or a downstream unit to infer the person of the vehicle owner or driver. As a result, data protection concerns are eliminated against the previously known vehicle-mounted devices, which promotes the use of vehicle units according to the invention by a large circle of vehicles.
  • the vehicle unit is designed as an RFID transponder with active transmitting unit, which is connected to the power supply to a battery of the vehicle. Due to the low cost of RFID tags, the vehicle-side cost is kept particularly low, which further increases the efficiency of the system according to the invention.
  • the detection unit can be designed as a pure receiver and therefore also cost.
  • the vehicle unit can also be designed as a passive RFID transponder, in which case the detection unit emits an interrogation signal, which the passive transponder with modulated identity date sends back to the detection unit. In the case of the passive RFID tag, no power supply is required on the vehicle side.
  • the vehicle unit has a generator for the random generation of the identification date. If the identification date is formed as a random number, the data security regarding a possibility of inference from a transmitted identification date to the driver or holder of the transferring vehicle is further increased. This in turn increases confidence in the system according to the invention, which increases the equipment level of vehicles with the system according to the invention even more.
  • the random number generator is coupled to an engine ignition of the vehicle such that the identity date can be generated in each case upon actuation of the engine ignition. Accordingly, a new identification date is generated at each start of the journey, which further improves the anonymity of the owner or driver of the transferring vehicle.
  • the trackside detection device has a communication unit for receiving the identification data and a memory unit for storing a traffic data record, the traffic data record comprising the identification date and a time data representing a reception time of the identification data.
  • traffic data sets are available, which include the information at what time a vehicle with a specific date of identification has passed this detection device.
  • the trackside detection unit is integrated into a control unit of a traffic light system.
  • the detection unit can be integrated in the intersection device of a traffic signal system, while in the case of a motorway network, the detection unit can be integrated in a route station for controlling change sign.
  • the capture unit use the power supply and the communication unit of the respective control unit.
  • the trackside detection unit for supplying energy has a solar panel coupled to an accumulator.
  • This type of self-sufficient energy supply can be selected if the detection unit is not integrated into existing control units, but is designed as a separate structural unit due to the desired site. Alternatively, however, the detection unit designed as a separate structural unit can also be connected to an existing power supply, for example to a street lighting.
  • the communication unit of the trackside detection device is designed for the cyclical transmission of stored traffic data records to the processing center.
  • communication costs can be saved if a traffic data record is not transmitted after each incoming identity date, but if the traffic records are stored in the memory unit and in cycles of about 5 to 10 minutes Memory content collected is transmitted to the processing center.
  • a traffic data record transmitted by the trackside detection device additionally has a position datum representing a site of installation of the detection device.
  • the traffic data set completed in this way ensures in the processing center the information at what time and at which location a vehicle with a certain identity date traveled. As a result, the route of a particular vehicle can be tracked anonymously in the processing center.
  • the trackside detection device advantageously has a compression unit for compressing traffic data records to be transmitted. Due to the thus reduced data volume for the transmission of traffic records to the processing center additional communication costs are saved.
  • the detection devices are arranged so distributed to routes that a route of a vehicle within a road network is clearly traceable.
  • the detection devices must therefore be placed in such a way that no alternative routes through the vehicle can be selected between them. If alternative routes are possible between two nodes of the road network, these are to be covered by separate detection devices.
  • the detection devices according to the invention are initially preferably arranged on routes to which no conventional traffic detectors are installed.
  • the processing center has an evaluation unit for assigning traffic data records with matching identification data and for allocating the traffic data records to a traffic model. From the assigned traffic data sets with matching identification data, the travel routes of individual vehicles, including the time course, can be reconstructed by the road network. From this, the current traffic status as well as the current traffic demands within the road network can be determined online and with high precision. To obtain a traffic forecast, the current traffic data sets are assigned to a traffic model which, based on the currently available traffic data, estimates the traffic status or the traffic demands at a future point in time.
  • the processing center is designed for data exchange with an adjacent processing center.
  • the calculations and forecasts also take into account the traffic data records of a neighboring processing center. This larger database increases the accuracy of the traffic information obtained.
  • a system 10 for determining traffic information of a road network comprises a road traffic data collection unit 30 for traffic information of a passing vehicle F, a traffic information processing center 40 for traffic information and communication means for transmitting the detected traffic information Traffic data from the trackside detection device 30 to the processing center 40 on.
  • the vehicle F is provided with a unit 20 for wireless transmission of a date ID identifying the vehicle F.
  • the vehicle unit 20 is designed as an RFID transponder with active transmission unit 21 and connected to its power supply to a battery B of the vehicle F.
  • the vehicle unit 20 further includes a generator 22 for accidentally generating the identification data ID.
  • the vehicle unit 20 is designed to generate an anonymous identity date ID, which on the one hand uniquely identifies an individual vehicle F on its way through the road network, but on the other hand does not allow any conclusion on the person of the vehicle driver or vehicle owner.
  • the random generator 22 is coupled to an engine ignition Z of the vehicle F such that the identification data ID can be generated when the engine ignition Z is actuated.
  • the randomly determined but unique identification number ID applies for the duration of a journey.
  • the trackside detection device 30 has a communication unit 31 for receiving the identification data ID.
  • the received identification data ID is combined with a time data ZD to form a traffic data record, wherein the time data ZD represents the reception time of the identification data ID at the detection device 30.
  • a multiplicity of traffic data sets are received and stored in a memory unit 32 of the detection device 30.
  • the stored traffic records are cyclically transmitted to the processing center 40.
  • the transmitted traffic data sets have, in addition to the identification data ID and the time data ZD, a position data PD which represents the location of the detection device 30.
  • the communication unit 31 of the detection device 30 and a reception unit 41 of the processing center 40 for wireless data transmission via a cellular radio network N are formed.
  • the traffic data sets to be cyclically transmitted are compressed by means of a compression unit 33 of the detection device 30 before being sent.
  • the detection device 30 can be integrated into a control device of a traffic light system with already existing power supply and communication device, but is executed in the illustrated embodiment as a separate structural unit.
  • the detection device 30 is independent of the presence of a data line network;
  • an accumulator 34 which is fed by a solar panel 35, is provided for self-sufficient energy supply to the detection device 30.
  • the detection devices 30 are now arranged distributed along the road network on routes S that a route of a vehicle F within the road network is clearly traceable. It is important to ensure that alternative routes between two network nodes do not remain without separate detection devices 30.
  • a multiplicity of traffic data sets from all the detection devices 30 within the road network are received via the receiving unit 41.
  • the traffic data sets ID, ZD, PD are fed to an evaluation unit 42 of the processing center 40, where traffic data records are merged with matching identification data ID. It will be reconstructed therefrom routes with a time course of all in a viewing period through the road network driving vehicles F. From the routes are in the evaluation unit 42 of Current traffic condition and the traffic demands in the road network determined with high accuracy. An additional increase in accuracy results from consideration of traffic data sets of neighboring processing centers 40 ', for which purpose they are designed for a mutual exchange of data.
  • the processing center 40 is formed, for example, by a traffic management or traffic information center.
  • all incoming traffic data sets from the trackside detection devices 30 are received, assigned, statistically processed and forwarded network-wide state estimation models for further use. Travel route profiles as well as traffic demand and travel times can be accurately determined via the route profiles. By exchanging data between processing centers of different spatial areas, it is possible to track vehicles F over larger network areas.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Closed-Circuit Television Systems (AREA)

Claims (13)

  1. Système ( 10 ) de détermination d'informations de trafic d'un réseau routier, comprenant un dispositif ( 30 ) qui est disposé sur une voie ( S ) du réseau routier et qui est destiné à relever des données de trafic d'un véhicule ( F ) qui y passe, comprenant une centrale ( 40 ) de traitement des données de trafic relevées en des informations de trafic comprenant une unité ( 20 ) embarquée dans le véhicule ( F ), pour l'émission sans fil d'une donnée ( ID ) identifiant le véhicule ( F ), et comprenant des moyens de communication, pour la transmission des données de trafic relevées du dispositif ( 30 ) de relevé du côté voie à la centrale ( 40 ) de traitement, caractérisé en ce que l'unité ( 20 ) de véhicule est constituée pour la production d'une donnée ( ID ) d'identification anonyme et comporte un générateur ( 22 ) de production au hasard de la donnée ( ID ) d'identification anonyme.
  2. Système ( 10 ) suivant la revendication 1,
    dans lequel l'unité ( 20 ) de véhicule est constituée sous la forme d'un transpondeur RFID, ayant une unité ( 21 ) d'émission active, qui est raccordée pour l'alimentation en énergie à une batterie ( B ) du véhicule ( F ).
  3. Système ( 10 ) suivant la revendication 1,
    dans lequel le générateur ( 22 ) au hasard est couplé à un allumage ( Z ) du moteur du véhicule ( F ), de manière à ce que la donnée ( ID ) d'identification anonyme puisse être produite respectivement lors de l'actionnement de l'allumage ( Z ) du moteur.
  4. Système ( 10 ) suivant l'une des revendications 1 à 3,
    dans lequel le dispositif ( 30 ) de relevé du côté voie comporte une unité ( 31 ) de communication, pour la réception de la donnée ( ID ) d'identification anonyme, et une unité ( 32 ) de mémoire, pour la mémorisation d'un jeu de données de trafic, le jeu de données de trafic comprenant la donnée ( ID ) d'identification anonyme et une donnée ( ID ) de temps, qui représente un instant de réception de la donnée ( ID ) d'identification.
  5. Système ( 10 ) suivant l'une des revendications 1 à 4,
    dans lequel l'unité ( 30 ) qui effectue des relevés du côté voie est intégrée dans un appareil de commande d'une installation lumineuse de signalisation.
  6. Système ( 10 ) suivant l'une des revendications 1 à 5,
    dans lequel l'unité ( 30 ) qui effectue des relevés du côté voie comporte pour l'alimentation en énergie, un panneau ( 35 ) solaire couplé à un accumulateur ( 34 ).
  7. Système ( 10 ) suivant l'une des revendications 1 à 6,
    dans lequel l'unité ( 31 ) de communication du dispositif ( 30 ) qui effectue des relevés du côté voie est constituée pour l'émission cyclique de jeux de données de trafic mémorisés vers la centrale ( 40 ) de traitement.
  8. Système ( 10 ) suivant l'une des revendications 1 à 7,
    dans lequel un jeu de données de trafic, émis par le dispositif ( 30 ) qui effectue des relevés du côté voie, comporte supplémentairement une donnée ( PD ) de position représentant un emplacement d'érection du dispositif ( 30 ) qui effectue des relevés.
  9. Système ( 10 ) suivant l'une des revendications 1 à 8,
    dans lequel le dispositif ( 30 ) qui effectue des relevés du côté voie comporte une unité ( 33 ) de compression, pour compresser des jeux de données de trafic à émettre.
  10. Système ( 10 ) suivant l'une des revendications 1 à 9,
    dans lequel l'unité ( 31 ) de communication du dispositif ( 30 ) qui effectue des relevés et une unité ( 41 ) de réception de la centrale ( 40 ) de traitement sont constituées pour la transmission de données sans fil par un réseau ( N ) radio cellulaire.
  11. Système ( 10 ) suivant l'une des revendications 1 à 10,
    dans lequel les dispositifs ( 30 ) qui effectuent des relevés sont répartis sur des voies ( S ), de manière à ce qu'un itinéraire d'un véhicule ( F ) puisse être suivi nettement dans le réseau routier.
  12. Système ( 10 ) suivant l'une des revendications 1 à 11,
    dans lequel la centrale ( 40 ) de traitement comporte une unité ( 42 ) d'exploitation, pour l'association de jeux de données de trafic à des données ( ID ) d'identification anonymes en coïncidence et pour l'affectation des jeux de données de trafic à un modèle de trafic.
  13. Système ( 10 ) suivant l'une des revendications 1 à 12,
    dans lequel la centrale ( 40 ) de traitement est constituée pour échanger des données avec une centrale ( 40' ) de traitement voisine.
EP08104886A 2007-07-30 2008-07-28 Système pour déterminer des informations de trafic Not-in-force EP2026311B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007035624 2007-07-30

Publications (2)

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EP2026311A1 EP2026311A1 (fr) 2009-02-18
EP2026311B1 true EP2026311B1 (fr) 2010-11-17

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EP08104886A Not-in-force EP2026311B1 (fr) 2007-07-30 2008-07-28 Système pour déterminer des informations de trafic

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AT (1) ATE488829T1 (fr)
DE (1) DE502008001807D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017201514B4 (de) 2017-01-31 2022-11-03 Volkswagen Aktiengesellschaft Verfahren für ein Fahrzeug einer Fahrzeugflotte zur Übertragung von Daten an eine Datenverarbeitungsanlage, Verfahren für eine Datenverarbeitungsanlage zum Übertragen von Daten einer Fahrzeugflotte an die Datenverarbeitungsanlage sowie Fahrzeug
DE102018000837B4 (de) 2018-02-02 2022-02-17 Psa Automobiles Sa Verfahren und Vorrichtung zur Erzeugung einer anonymisierten Fahrzeugidentifikationsnummer
DE102018210955B4 (de) * 2018-07-04 2022-02-17 Audi Ag Verfahren zum Ermitteln eines Komponentenverhaltens zumindest einer Fahrzeugkomponente eines Kraftfahrzeugs sowie Kraftfahrzeug

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341813C2 (de) * 1993-12-08 1997-06-19 Bosch Gmbh Robert Vorrichtung zum automatischen Aufspüren eines gesuchten Fahrzeugs
JP3555345B2 (ja) * 1996-08-09 2004-08-18 株式会社日立製作所 自動料金収受システムの車載機
US6052068A (en) * 1997-03-25 2000-04-18 Frederick J. Price Vehicle identification system
DE102004035856A1 (de) 2003-08-14 2005-03-10 Roland Bittner Elektrische Zusatzeinrichtung für Verkehrseinrichtungen wie Verkehrsschild, Verkehrsampel, Verkehrsleitpfosten und Verkehrsleitbake sowie Verkehrshinweissystem, Verkehrsunfallverminderungssystem
DE102005036562B4 (de) * 2005-08-03 2007-05-10 Siemens Ag Verfahren und Anordnung zum anonymisierten Erfassen und Auswerten von Fahrzeugreisedaten
US8015404B2 (en) * 2005-09-16 2011-09-06 Gm Global Technology Operations, Llc System and method for collecting traffic data using probe vehicles

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ATE488829T1 (de) 2010-12-15
DE502008001807D1 (de) 2010-12-30

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