EP1973086B1 - Procédé et système destinés à la reconnaissance d'incidents de trafic dans une situation de trafic changeant de manière dynamique - Google Patents

Procédé et système destinés à la reconnaissance d'incidents de trafic dans une situation de trafic changeant de manière dynamique Download PDF

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Publication number
EP1973086B1
EP1973086B1 EP07122443A EP07122443A EP1973086B1 EP 1973086 B1 EP1973086 B1 EP 1973086B1 EP 07122443 A EP07122443 A EP 07122443A EP 07122443 A EP07122443 A EP 07122443A EP 1973086 B1 EP1973086 B1 EP 1973086B1
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EP
European Patent Office
Prior art keywords
traffic
signals
vehicle
time
mobile telephone
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EP07122443A
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German (de)
English (en)
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EP1973086A1 (fr
Inventor
Ulrich Fastenrath
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Deutsche Telekom AG
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Deutsche Telekom AG
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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
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/20—Monitoring the location of vehicles belonging to a group, e.g. fleet of vehicles, countable or determined number of vehicles

Definitions

  • the invention relates to a method for detecting traffic congestion in a dynamically changing traffic situation according to the preamble of claim 1 and a system performing the method according to the preamble of the independent device claim.
  • the traffic situation on our roads is very much influenced by private traffic and can occur, for example. during a day with a high dynamic change, so that unpleasant traffic disruptions, such as inhibiting the flow of traffic and especially congestion can occur very quickly.
  • unpleasant traffic disruptions such as inhibiting the flow of traffic and especially congestion can occur very quickly.
  • the early recognition of such traffic disruptions and even more their premature prognosis place high technical demands on systems and services designed for them.
  • the collective information services that are processed via the broadcasting stations or broadcasters are known, which inform the drivers concerned about traffic jams and other traffic disruptions in their respective broadcasting area.
  • the information is digitally transmitted e.g. transmitted via mobile to installed in the vehicles navigation systems, which not only provide the respective motorists with the current traffic information, but also offer him suggestions for bypassing such traffic disruptions.
  • These and similar traffic information can be distributed via various media (telephone, Internet, data services), whereby they are centrally recorded or processed and usually consist of individual traffic reports, which in turn by direct observation of the objects of This is mainly due to human observers, such as police officers and so-called traffic jam detectors, who detect a traffic jam and then report it by radio or telephone to a central office.
  • human observers such as police officers and so-called traffic jam detectors, who detect a traffic jam and then report it by radio or telephone to a central office.
  • traffic jam detectors who detect a traffic jam and then report it by radio or telephone to a central office.
  • the respective position, length and possibly other characteristics of the traffic disturbance is determined from the sum of the individual observations and their time course, possibly even from a single observation, expressed as a traffic message and provided for individual information services or as collective traffic information ,
  • Stau-Schau by P.-M. Ziegler and U. Fastenrath in the magazine” ct "issue 9/2004 on pages 172 - 181 Referenced.
  • the location information present in the mobile network is typically associated with errors of several hundred meters, so that the exact assignment of measured speeds to the road network, represented by a digital map, especially in dense networks, especially in urban networks, difficult and often impossible is.
  • a clear signal for disturbed traffic can take a long time to wait, possibly failing despite an existing traffic incident.
  • a method is known in which a defined vehicle with a GPS receiver periodically transmits information to a center, distinguishing whether the driver speaks or does not speak. During speech, there is a connection so that the data of the location of the vehicle can be transmitted, whereby the data are obtained by pollen from the mobile device during non-speech.
  • the Where 20041059592 also works on the basis of a sample vehicle, which must send specific information to a central office. It thus requires a specific terminal in a vehicle.
  • This object is achieved by a device and a method according to the independent claims.
  • the present invention provides a method for detecting traffic congestion in a dynamically changing traffic situation in a spatial area in which at least one of a vehicle associated mobile device signals are detected in chronological order, the presence of the View vehicle in the spatial area, wherein by an evaluation of the temporal sequence of the signals on a continuous movement of the vehicle along a located in the spatial area traffic route can be closed or is, and in which complementary to the evaluation of the temporal sequence of the signals based on the absence of the signals, an occurrence of traffic disturbances is detected and displayed.
  • the typical frequencies of the signals for free traffic depending on route section, time of day and day of the week are determined from historical data, which is determined from the frequency response a minimum time that must be waited before a traffic incident is logged.
  • the present invention provides a system implementing the method, the system comprising receiving devices and a center connected thereto, which receives, at least from a mobile sensor associated with a vehicle, signals in chronological order which indicate a presence of the vehicle in the vehicle Show spatial area, which can be concluded by an evaluation of the temporal sequence of the signals on a continuous movement of the vehicle along a located in the spatial area traffic route, and that the central complementary to the evaluation of the temporal sequence of signals based on at least one criterion Identify traffic incidents and prepared for display or for forwarding to processing systems or users.
  • the at least one criterion is the absence of the signals to be detected during a predefinable period of time.
  • the at least temporary absence of the signals indicates a no longer present or static presence of the mobile sensors (and thus the vehicles) in the observed space, which in turn indicates that there is a high probability of no free ride for these vehicles and thus here a traffic incident is indicated.
  • the at least one criterion may be the time profile of the sequence of the signals to be detected.
  • the at least one criterion represents a sign and / or logoff of the vehicle in the spatial area signaled by the respective mobile sensor.
  • the mobile sensor is located in the vehicle mobile device and if the spatial area is a local multiple radio cells comprehensive coverage area of a cellular mobile network, and if those signals are detected, the logging in or out of the mobile device or indicate mobile phones in the respective radio cell, which is detected on the basis of the radio cell identifier and the time sequence of the signals in which radio cell, the vehicle at which time.
  • the receiving devices are base stations of a cellular mobile radio network
  • the mobile sensor is a mobile device located in the vehicle or mobile telephone which transmits the signals to the base station
  • the spatial area comprises a local multiple radio cells Represents supply area of the cellular mobile network, which is supplied by the base stations, and that the center detects and evaluates the received signals from the base stations.
  • Fig. 1 the conventional method for detecting a traffic jam with conventional sources of traffic data is shown:
  • measurement and reporting data are transmitted as individual signals from stationary and mobile sensors or by human observers (detectors) to a central office.
  • the control center determines the position, length and severity of a traffic jam, and the jam finally presents itself as an extended object in the path-time diagram.
  • Fig. 2 becomes clear that in the period between 14 h to about 20 h increased traffic on the stretch between 335 km and 350 km has been determined.
  • Fig. 2 a geographical map is shown, which includes the motorway area west of Stuttgart including the motorway junction Leonberg with sections of the A81 and the A8.
  • the last stretch on the A81 in the south to the Leonberger triangle is here to exemplify the section between 335 and 345 km, to which also the path-time diagrams shown here (see Fig.1 such as Fig. 3 and 4 ) and which falls within the spatial range considered here.
  • Radio coverage area LA Location Area
  • LAC Location Area Code
  • the radio cells themselves each have their own radio cell identifier Cl (Cell ID).
  • the radio cells are usually supplied by sector antennas, which have a certain opening angle AZM (Azimuth Angle) depending on the requirement.
  • the invention makes use of these already existing system functionalities in order to realize a very effective evaluation for detecting traffic disruptions. Because it is a special finding of the invention that to solve the problems formulated at the outset, mobile sensors, in particular mobile phones or terminals, are outstandingly suitable for detecting free-flowing traffic and then gaining knowledge about traffic jams and even making predictive statements can.
  • the mobile network thus generates in clear sequence clear signals for free traffic, which are easily attributable to a digital road map.
  • the identifiers Cl 1798, 1800, 1563, 3209 and 5417, it is clear that the mobile phone moves to the southern end of the area LA.
  • FIG Fig. 3 shows a representation such as the one shown in FIG Fig. 3 shows.
  • the sections of the route are occupied with a free-drive state for the respective time, provided that the corresponding signals can be detected in the control center. Only if the signals are not present or if there are other signals or parameters which do not indicate "free travel", gaps or shadows form in the path-time diagram.
  • the procedure is virtually the reverse of the conventional method: the traffic jam throws a "shadow" into the free traffic or into the space-time carpet of the free-ride signals (see Fig. 3 ).
  • the absence of signals for free traffic is the reason for the headquarters to report a traffic incident.
  • a traffic disruption is then registered, if there is a sufficiently large gap in the free-ride signals (s. Fig. 3 ), eg if the average time between individual signals has passed twice on a section of the route, but no signal has arrived. As the gap grows, change messages with corrected length specification are generated. A free-ride signal for the entire affected section leads to the deregistration.
  • a method applicable in this context for generating announcements, changes and cancellations is inherent in the DE 199 05 284 A1 and is not the core of this invention.
  • the inventive method is characterized by determining the typical frequency of the signals for free traffic as a function of distance, time of day and day of the week from historical data. From the frequency response, a minimum time is determined (eg, twice the mean time interval between two signals for free traffic) that must be awaited before a traffic incident can be reported. As a result, the lowest possible logon delay is achieved. You can also set a limit for determine the measured frequency below which the procedure must be deactivated: at low traffic flows, such as at night, a traffic jam will no longer cast shadows and should then, as usual, be detected directly (by means of signals for disturbed traffic).
  • a method which detects traffic disturbances as space-time complement of spatially complete, localizable, temporally in close succession signals for free traffic, which are preferably generated by mobile sensors, typically mobile phones, but also "floating cars” , and from it traffic information generated for use in information services.

Claims (6)

  1. Procédé de détection de perturbations de circulation dans une situation de circulation qui change de manière dynamique dans une zone géographique (LA),
    utilisant un réseau de téléphonie mobile comportant des cellules radio, des signaux signalant une présence du véhicule dans la zone géographique (LA) étant fournis dans l'ordre chronologique par le réseau de téléphonie mobile lorsqu'un appareil de téléphonie mobile entre et sort des cellules radio (LAC), la comparaison de l'ordre chronologique des signaux avec une carte de réseau routier numérique concluant à un déplacement normal du véhicule le long d'une voie de communication (A81, A8) située dans la zone géographique (LA), et une apparition de perturbations de circulation étant détectée et signalée de manière complémentaire à l'analyse de l'ordre chronologique des signaux moyennant l'absence des signaux,
    caractérisé en ce que
    des fréquences typiques des signaux d'une libre circulation sont déterminées en fonction du tronçon de route, de l'heure et du jour de la semaine, à partir de données historiques, un temps minimum d'attente avant qu'une perturbation de circulation soit déclarée étant déterminé à partir de la variation de fréquence.
  2. Procédé selon la revendication 1, caractérisé en ce qu'il y a une absence répétée des signaux à détecter pendant une durée pré-déterminable.
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'une connexion signalée et/ou une déconnexion signalée du véhicule dans la zone géographique (LAC) est effectuée.
  4. Procédé selon l'une de revendications précédentes, caractérisé en ce que la zone géographique représente une zone locale desservie (LA) d'un réseau de téléphonie mobile cellulaire composée de plusieurs cellules radio, et en ce que les signaux détectés sont ceux qui signalent la connexion ou la déconnexion de l'appareil de téléphonie mobile dans les cellules radio, l'identification des cellules radio (CI) et l'ordre chronologique des signaux permettant de détecter dans quelle cellule radio se trouve le véhicule et à quel moment.
  5. Procédé selon la revendication 4, caractérisé en ce qu'une affectation géographique des cellules radio aux voies de communication (A81, A8) se trouvant dans la zone géographique (LA) permet de détecter si le véhicule se déplace le long de l'une des voies de communication (A81), notamment à une petite vitesse typique d'un embouteillage ou à une vitesse élevée régulière.
  6. Système de détection de perturbations de circulation dans une situation de circulation qui change de manière dynamique dans une zone géographique (LA),
    le système comprenant des dispositifs de réception sous la forme de stations de base d'un réseau de téléphonie mobile cellulaire et une station centrale qui y est reliée, des signaux signalant une présence du véhicule dans la zone géographique (LA) étant fournis dans l'ordre chronologique par le réseau de téléphonie mobile lorsqu'un appareil de téléphonie mobile entre et sort des cellules radio (LAC), la comparaison de l'ordre chronologique des signaux avec une carte de réseau routier numérique concluant à un déplacement continu du véhicule le long d'une voie de communication (A81, A8) située dans la zone géographique (LA), et la station centrale détectant une apparition de perturbations de circulation de manière complémentaire à l'analyse de l'ordre chronologique des signaux moyennant l'absence des signaux et la mettant en forme en vue d'un signalement ou du réacheminement vers des systèmes ou des utilisateurs pour être traitée,
    caractérisé en ce que
    des fréquences typiques des signaux d'une libre circulation sont déterminées en fonction du tronçon de route, de l'heure et du jour de la semaine, à partir de données historiques, un temps minimum d'attente avant qu'une perturbation de circulation soit déclarée étant déterminé à partir de la variation de fréquence.
EP07122443A 2007-03-23 2007-12-06 Procédé et système destinés à la reconnaissance d'incidents de trafic dans une situation de trafic changeant de manière dynamique Active EP1973086B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007014633A DE102007014633A1 (de) 2007-03-23 2007-03-23 Verfahren und System zur Erkennung von Verkehrsstörungen in einer sich dynamisch ändernden Verkehrslage

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EP1973086A1 EP1973086A1 (fr) 2008-09-24
EP1973086B1 true EP1973086B1 (fr) 2010-08-18

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EP07122443A Active EP1973086B1 (fr) 2007-03-23 2007-12-06 Procédé et système destinés à la reconnaissance d'incidents de trafic dans une situation de trafic changeant de manière dynamique

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EP (1) EP1973086B1 (fr)
AT (1) ATE478408T1 (fr)
DE (2) DE102007014633A1 (fr)
ES (1) ES2349443T3 (fr)

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638798A1 (de) 1996-09-20 1998-03-26 Deutsche Telekom Mobil Verfahren zur Verkehrsdatenerfassung mittels Mobilfunknetzen
DE19905284A1 (de) 1998-02-19 1999-09-09 Ddg Ges Fuer Verkehrsdaten Mbh Verkehrslageerfassung mit Fuzzy-Klassifikation und mehrdimensionaler morphologischer Datenfilterung und dynamischer Domänenbildung
GB9914812D0 (en) * 1999-06-25 1999-08-25 Kew Michael J Traffic monitoring
WO2002043026A1 (fr) * 2000-11-24 2002-05-30 Nokia Corporation Controle du trafic
JP3849435B2 (ja) * 2001-02-23 2006-11-22 株式会社日立製作所 プローブ情報を利用した交通状況推定方法及び交通状況推定・提供システム
US6577946B2 (en) * 2001-07-10 2003-06-10 Makor Issues And Rights Ltd. Traffic information gathering via cellular phone networks for intelligent transportation systems
DE10225033B4 (de) * 2002-06-06 2008-06-19 Kyamakya, Kyandoghere, Prof.Dr.-Ing. Verfahren zur Gewinnung von Verkehrsinformationen, wie Stau, Verkehrsdichte oder Geschwindigkeit
IL150894A0 (en) * 2002-07-24 2003-04-10 A method for measuring road traffic load based on analyzing cellular communications
DE10240217A1 (de) * 2002-08-31 2004-03-11 Georg Dr. Otte Verfahren zur Bestimmung der Bewegungsgeschwindigkeit von Objekten
ITTO20020814A1 (it) * 2002-09-19 2004-03-20 Maurizio Morisio Procedimento e sistema per la rilevazione e la stima del
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DE10333793B4 (de) * 2003-07-24 2010-03-18 Vodafone Holding Gmbh Verfahren und System zum Erzeugen von Informationsdaten
JP2006285567A (ja) * 2005-03-31 2006-10-19 Hitachi Ltd プローブ交通情報のデータ処理システム、プローブ交通情報のデータ処理装置、およびプローブ交通情報のデータ処理方法

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Publication number Publication date
ATE478408T1 (de) 2010-09-15
EP1973086A1 (fr) 2008-09-24
ES2349443T3 (es) 2011-01-03
DE102007014633A1 (de) 2008-09-25
DE502007004775D1 (de) 2010-09-30

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