EP0958563B1 - Procede de detection de l'etat du trafic routier, detecteur et centrale - Google Patents

Procede de detection de l'etat du trafic routier, detecteur et centrale Download PDF

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Publication number
EP0958563B1
EP0958563B1 EP98909306A EP98909306A EP0958563B1 EP 0958563 B1 EP0958563 B1 EP 0958563B1 EP 98909306 A EP98909306 A EP 98909306A EP 98909306 A EP98909306 A EP 98909306A EP 0958563 B1 EP0958563 B1 EP 0958563B1
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EP
European Patent Office
Prior art keywords
detector
data
traffic data
control centre
traffic
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
EP98909306A
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German (de)
English (en)
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EP0958563A1 (fr
Inventor
Michael Brandenbusch
Ulrich Fastenrath
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 Holding GmbH
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Vodafone Holding GmbH
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
Priority claimed from DE19755459A external-priority patent/DE19755459A1/de
Application filed by Vodafone Holding GmbH filed Critical Vodafone Holding GmbH
Publication of EP0958563A1 publication Critical patent/EP0958563A1/fr
Application granted granted Critical
Publication of EP0958563B1 publication Critical patent/EP0958563B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/0104Measuring and analyzing of parameters relative to traffic conditions
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/0962Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967Systems involving transmission of highway information, e.g. weather, speed limits

Definitions

  • the invention relates to a method for traffic situation detection, a detector and a headquarters.
  • Detectors In addition to mobile devices arranged in vehicles, the traffic situation is recorded Detectors also stationary roads with heavy traffic at certain positions arranged detectors used. These are for example on bridges, masts etc. arranged. Such stationary detectors are supplied with energy expediently by solar energy, deviating from solar elements on the detector is recorded, with a battery to enable the detector as a rule broadcasting even in low sunlight, for example at night, is provided. However, that is for sending data from the stationary detector on a control center that can be used by mobile radio etc. due to the sun's radiation in the Limited over a day; an enlargement of the solar elements to increase the maximum absorbable solar energy is the cost of larger solar elements, the space requirement and the visual conspicuity.
  • a stationary one Do not send the detector in any short time intervals.
  • shortening the transmission time interval and / or the amount of data transmitted, that is Transmission power is also available due to random fluctuations standing solar energy, in particular through cloud cover or precipitation, limited.
  • the object of the invention is therefore to optimize the use of the limited Available energy for information to a control center with a detector current relevant traffic data. This task is accomplished through the objects of the independent claims solved.
  • the reporting behavior which can be predetermined according to the invention enables the Detector on fluctuating requirements for different reasons Transmission of traffic data from the detector to a central office.
  • the decision Depending on the reporting behavior of the detector, of traffic data measured by this detector in the detector or in the Headquarter done. Thus the reporting behavior to the current local Adaptable traffic situation at the detector.
  • the decision on the Reporting behavior state of a detector can also be hit due to measured by one or more other detectors, from these to the control center Transmitted traffic data, data about this traffic data or commands from the control center to the detector to decide on its reporting behavior is to be transmitted; this is especially the future to be expected Traffic condition at the location of the detector to decide on the future Reporting behavior of this detector can be used.
  • the measured traffic data which in the decision about the future Reporting behavior state of a detector are included the vehicle speed of a detector is particularly expedient passing vehicles because the speed of the traffic situation is relatively good correlated and good for direct decision or through a traffic model Reporting behavior state of a detector is suitable.
  • the Decision to bring a detector into a certain state also from the Number of detectors by this or at least one other detector within one Detect the time unit of detected vehicles because the number is also used Traffic situation and thus the requirement for the transmission of data from the detector a central office correlates.
  • the speed, number and possibly speed variance from a vehicle passing through a detector is especially to the local one Appropriate decision in the detector to change its status.
  • Detection behavior state of a detector in particular the time interval between two recordings of the traffic situation (especially speed and Number of vehicles) by a detector.
  • Vehicles In addition to the speeds and the number of passes by a detector Vehicles is also the history on this detector for the decision about his reporting behavior state suitable. In particular, the decision about the reporting behavior status of fluctuations, especially the variance, from on a detector detected vehicle speeds and / or the detected Number of vehicles at one or more times in the past be taken into account.
  • For a decision to change from a reporting behavior state to one other signaling behavior status can in particular be at least one threshold value Vehicle speeds and / or vehicle variance are defined at the Data are transmitted to the head office if the value is undershot and / or exceeded, however, at greater or lesser intervals than in the previous one Meldeverhaltsschreib.
  • Historical traffic data is expediently stored in the detector and / or the control center stored, which in particular to define the criteria, in particular Speeds and / or speed fluctuations can be used can, based on which criteria about the state of a detector to be selected is decided. In particular, this can be a learning process to optimize the Decision on the change in the reporting behavior carried out become.
  • traffic-independent parameters are also taken into account. So can the days of the week and / or weather data and / or the state of charge of the Battery of a detector in addition to pure traffic data are taken into account; she can also be taken into account when building a historical database and to determine criteria for deciding on the Reporting behavior state of a detector in the control center and / or in a detector.
  • a parameter evaluation is possible in the detector and / or in the control center. It is useful to evaluate local parameters such as local traffic data and other local data (local precipitation, temperature, state of charge, etc.) one detector each through this detector.
  • local parameters such as local traffic data and other local data (local precipitation, temperature, state of charge, etc.) one detector each through this detector.
  • the evaluation of temporal Changes to traffic data are possible in the detector; it is preferably done in the main office.
  • a control center and / or from a control center to a detector is advantageously carried out by Mobile radio, in particular GSM, in order to make stationary independent lines possible To create detectors.
  • a detector according to the invention expediently has a program for Execution of the method according to one of the method claims.
  • a preferred embodiment of the detector relates to a sensor for weather data, in particular the temperature at the detector, which determines the local decision about the Reporting behavior state of the detector optimized.
  • a control center for acquiring traffic data also expediently has one Program for carrying out the method according to one of the method claims on.
  • decision-making processes in the detector own decision-making processes about the Status of one or more detectors.
  • the status of the detector's response behavior is expediently a priority control vorgeseshen. Which decision has priority can vary Depend on parameters. In particular, current events at the detector can Define the priority of its decision over the decision of the head office.
  • a traffic situation detected by one or more detectors which is not yet detected on a special detector, in the control center to a Decision on the future reporting behavior status of this particular Lead detector, which is then transmitted to the detector and priority over one local decision of the detector. So the priority of decisions of the detector or the control center in particular depending on the topicality of the Acquisition of traffic data at the detector and / or the importance of acquired or calculated traffic data on the traffic situation, which for a detector of Meaning.
  • FIG. 1 shows vehicles 2, 3, 4, 5 traveling on a road 1 of a traffic network, 6, 7, of which in particular their speeds when passing a Detector 8 or 9 and the number of vehicles that have a detector 8 or 9 happen within a unit of time, detected and according to the specifiable Reporting behavior status of a detector at certain time intervals or / and Formats through a mobile radio network 10 or 11 to a traffic detection center 12 be transmitted.
  • mobile detectors can also be used capture 2 to 7 traffic data in vehicles and transmit them to the control center, which they use to inform 13 about the current or future traffic situation can use.
  • a stationary detector 8 is in each case at a specific point in the traffic network attached stationary. It can in particular on a bridge, over a Tunnel entrance, be mounted on a mast, a hill or the like. Because stationary Detectors can be attached to various points in the transport network for which there is no suitable energy and communication supply, stationary detectors 8 are generally designed to be self-sufficient. In particular can an independent energy supply, for example through a solar element and a battery and an independent communication device, in particular Mobile radio or the like. Have.
  • the detector 8 for example by solar energy and / or a battery Available energy limits the transmit energy that can be emitted by detector 8. Thus, a detector cannot be in any short time intervals and / or any number Send data.
  • a detector now transmits at certain fixed time intervals, be within current events, such as traffic data, which lie within a time interval Accident, etc., only delayed to a control center, which Can not provide road users with current information. Furthermore, the one Detector available energy through external influences, such as cloud cover, Rainfall etc., limited.
  • reporting behavior especially the time interval in which a Detector reports traffic data to a central, depending on different Influences.
  • the decision to adapt can be made at the headquarters 12 and / or in the detector 8.
  • fixed priority rules can be provided. For example can, if a center sends a message from a detector only every five hours required, but the detector due to the lack of passing Vehicles suspected an accident in front of the detector, contrary to the decision of Central decision for immediate reporting and / or future reporting send in short time intervals.
  • reporting behavior states can only be temporary, so that a relapse into a certain reporting behavior state, which also depend on factors such as day of the week, time, temperature etc. can, is provided.
  • Figure 2 shows schematically the communication between a center 12 and one (referred to as a detection unit) detector 8.
  • the detector detects a Sensor system 14 traffic data at its position; this can in particular the Speed of a vehicle passing through it; furthermore a detector from directly obtained data, such as single vehicle speeds, too mean vehicle speeds in certain time intervals, the variance average or individual vehicle speeds in the same or different Time intervals, the number of vehicles in intervals and / or the change determine the number of vehicles per time interval.
  • directly obtained data such as individual vehicle speeds, may become such derived data monitored by a local agent 15.
  • This can in particular a special subroutine in the sequence control of a detector 8 be or can also be a separate circuit or sequence control in the detector 8.
  • a local agent can control the variance of vehicle speeds, another local agent keep track of the number of vehicles per unit of time etc.
  • an "attentive state machine” monitors 16 only standard data, i.e. speeds and possibly also derived data Sizes such as speed variance, number variance etc.
  • a local agent 15 shares the attentive state machine 16 here if something relevant happened, such as the absence of vehicles, the lowering of the per time unit 8 vehicles passing the detector to zero.
  • the attentive state machine 16 is communicated via the communication 17, 18 Mobile radio etc. inform a central office 12. This can be done through the Traffic situation detection 19 and processing 20 determine that it is a relevant event, for example through a special radio broadcast (13) etc. Inform road users.
  • the control center 12 can also receive data from approach other detection units 8. These can be special current events or routinely collected traffic data or derived quantities.
  • the decision at the headquarters about a change of the current one Reporting behavior state of a stationary detector 8 can be based on it transmitted traffic data and derived data as well as on the basis of others Detectors 9 transmitted traffic data and derived data and / or on the basis of other factors such as day of the week, time, precipitation, a historical Database etc. If the control center 12 decides that the Reporting behavior state of a detector 8 is to be changed, it transmits this to him Mobile radio etc. from their communication unit 18 to the communication unit 17 a detector 8, whereupon this decides whether it is in the commanded new Status of reporting behavior goes.
  • FIG. 3 shows a very simple example of the reporting behavior states of a detector 8, which here only has four reporting behavior states 31, 32, 33, 34.
  • the reporting behavior state 31 can be characterized, for example, that a message from the traffic detector 8 to a central station 12 follows every ten minutes, the message being the average speed passing by the detector 8 Vehicles in the past ten minutes, the variance in the speeds of the Vehicles which the detector 8 has detected in the last ten minutes and which Number of vehicles that passed detector 8 in the past ten minutes include.
  • the detector reports the average speed of it every minute passing vehicles in the last minute, the speed variance in the first to sixth intervals of ten seconds each in the last minute and the number of vehicles in the last minute.
  • the Detector every five hours speed and number of vehicles in the last five hours.
  • the detector 8 transmits all to the control center 12 five hours the speed in the past five hours, for each of the last five Hours the variance of the speeds of the vehicles in that hour and the Number of vehicles in the past five hours.
  • the reporting behavior state 33 of a detector 8 is in particular at times suitable, where nothing relevant happens regularly, for example on weekdays from midnight to 5 a.m. State 31 is particularly closed Suitable times when an observation of the traffic situation is necessary, however an accident, etc. has not necessarily already occurred.
  • the decision 41 Transitioning from state 31 to state 32 can be made, for example if a detector detects that there are currently no more vehicles on it drive past so that an accident upstream in front of the detector is suspected. In addition to a current message to the control center 12, the detector 8 can then decide independently to go to state 32. Such one Decision 41 can also be made by a central office. If again Vehicles pass the detector 8 or vehicles again with the usual The detector 8 or the control center can drive past the speed 8 decide to transition from state 32 to state 31 again (42).
  • the decision to change from state 31 to state 32 therefore, more often can report, for example, for a detector 9 from a center 12 and be transmitted to it when the center 12 determined by the detector 8 Traffic data etc. recorded, such as fluctuations in Vehicle speeds, fluctuations in the number of vehicles, etc.
  • the center and / or a detector 8 decide (43) to change from state 33 to state 31, i.e. more often report until a decision to return from state 31 to state 33 etc. is hit (44) because a certain amount of time has passed or has passed Vehicle speeds or vehicle speed variances in again move a common area.
  • the detector 8 has a sequence control with a program for execution of the inventive method, a memory for this program and for recorded traffic data, a processor for processing the stored Program, a transmitting and receiving device for transmitting Traffic data to a central office or for receiving traffic data and / or Commands to change the reporting behavior status from the control center, one Detection unit for capturing traffic data, in particular for measuring traffic speeds passing through the detector.
  • the different Reporting behavior states can be stored in a memory in the detector and from the Processor in the detector based on a decision in the detector or one Decision to be changed at headquarters.
  • the detector can in particular have sensors for weather data, such as temperature, precipitation, etc.
  • the communication between the detector and the control center is expediently carried out via a mobile radio device on the detector.
  • a control center 12 also has a program for performing the method according to the invention, a memory for the program and for determined and / or calculated traffic data or traffic situation data, a processor for executing the program, a transceiver for receiving traffic data from a detector and possibly Information about the current reporting behavior status of the detector and for sending traffic data and / or commands for changing the reporting behavior status to a detector.
  • a control center expediently communicates with a plurality of detectors 8, 9 and possibly also with mobile detectors in vehicles 2 to 7.
  • the Measurement behavior state of the detector can be selected. This can also be from the detector and / or the central office can be determined. In particular, the frequency of Measurements, the type of measurements, the accuracy of measurements etc. become. In the case of energy-intensive measurements in particular, their frequency can be reduced to be changed.
  • the measurement behavior state can be based on that of the detector or Traffic situation determined by the control center at the detector or at other points in the Transport network can be selected. Furthermore, other data, such as the state of charge the battery of a detector, the current incoming solar energy, the temperature, Precipitation etc. for the decision about the state of measurement behavior be taken into account.

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

Claims (20)

  1. Procédé pour détecter la situation du trafic, comportant une centrale et des détecteurs fixes en plusieurs endroits dans un réseau routier, les détecteurs détectant, à chaque fois, des données de trafic à leur emplacement et transmettant des données de trafic à la centrale de façon dépendant d'un état de signalisation pouvant être prédéfini, plusieurs états de signalisation d'un détecteur étant prévus qui sont choisis au moins de façon dépendant de données de trafic et qui définissent la signalisation du détecteur.
  2. Procédé selon la revendication 1,
    caractérisé en ce qu'une décision concernant l'état de signalisation d'un détecteur est prise de façon dépendant de données de trafic mesurées par ce détecteur.
  3. Procédé selon une des revendications précédentes,
    caractérisé en ce que la décision concernant l'état de signalisation d'un détecteur est prise de façon dépendant de données de trafic mesurées par un ou plusieurs détecteurs et transmises à la centrale, des données concernant ces données de trafic ou des ordres étant transmis de la centrale au premier détecteur.
  4. Procédé selon une des revendications précédentes,
    caractérisé en ce que les données de trafic mesurées comportent la vitesse de véhicules passant devant un détecteur.
  5. Procédé pour détecter la situation de trafic selon une des revendications précédentes,
    caractérisé en ce que la décision d'amener un détecteur dans un état déterminé dépend du nombre des véhicules détectés au niveau de ce détecteur et/ou d'au moins un autre détecteur à l'intérieur d'une unité de temps.
  6. Procédé selon une des revendications précédentes,
    caractérisé en ce que la décision pour un état de signalisation déterminé comporte le réglage de l'intervalle de temps entre, à chaque fois, deux messages du détecteur à la centrale.
  7. Procédé selon une des revendications précédentes,
    caractérisé en ce que la décision d'amener un détecteur dans un état de signalisation et/ou dans un état de détection déterminé est prise sur la base de la variance de vitesses de véhicules passant devant un détecteur.
  8. Procédé selon une des revendications précédentes,
    caractérisé en ce que, lorsqu'une valeur de seuil pour les vitesses de véhicules et/ou la variance de vitesses de véhicules n'est pas atteinte, des données sont transmises à la centrale de façon cyclique à des intervalles de temps plus grands ou plus petits.
  9. Procédé selon une des revendications précédentes,
    caractérisé en ce qu'il est mémorisé, dans le détecteur et/ou dans la centrale, des données de trafic historiques, en particulier des données sur des vitesses de véhicules et/ou un nombre de véhicules et/ou des variances de vitesses de véhicules à des heures et/ou des jours de la semaine déterminés.
  10. Procédé selon la revendication 9,
    caractérisé en ce que, sur la base des données de trafic historiques, les critères, en particulier des valeurs de seuils de vitesses et/ou des valeurs de seuils de variances de vitesses et/ou un nombre de véhicules par unité de temps, sont définis, sur la base desquels il est décidé de l'état à choisir d'un détecteur.
  11. Procédé selon la revendication 9 ou 10,
    caractérisé en ce que des données de trafic sont mémorisées pour des heures et/ou des jours de la semaine déterminés.
  12. Procédé selon une des revendications 9 à 11,
    caractérisé en ce que des données atmosphériques, en particulier des données sur des températures et/ou l'humidité de l'air et/ou des précipitations et/ou le rayonnement solaire, sont prises en compte.
  13. Procédé selon une des revendications précédentes,
    caractérisé en ce que l'état de charge de la batterie d'un détecteur est pris en compte.
  14. Procédé selon une des revendications précédentes,
    caractérisé en ce que l'exploitation de données de trafic locales et d'autres données sur un détecteur est effectuée à chaque fois par ce détecteur.
  15. Procédé selon une des revendications précédentes,
    caractérisé en ce que l'exploitation de modifications temporelles de données, en particulier de données de trafic, est effectuée par la centrale.
  16. Procédé selon une des revendications précédentes,
    caractérisé en ce que la transmission de données, en particulier de données de trafic, et/ou d'indications entre un détecteur et la centrale est effectuée par radiotéléphonie mobile.
  17. Détecteur pour détecter des données de trafic, en particulier des vitesses de véhicules l'intéressant, comportant un programme pour mettre en oeuvre le procédé selon une des revendications précédentes, comportant de plus une mémoire pour le programme, un processeur pour exploiter le programme, un dispositif d'émission et de réception pour transmettre des données de trafic et/ou des indications entre le détecteur et une centrale, une unité de détection pour détecter des données de trafic en particulier des vitesses de véhicules, plusieurs états étant prévus pour la signalisation du détecteur à la centrale, lesquels peuvent être choisis sur la base de données de trafic.
  18. Détecteur selon la revendication 17,
    caractérisé en ce que des capteurs de mesure sont prévus sur le détecteur pour des données atmosphériques, en particulier des températures, des précipitations et/ou le rayonnement solaire.
  19. Détecteur selon la revendication 17 ou 18,
    caractérisé en ce qu'un appareil de radiotéléphonie mobile est prévu pour la transmission de données.
  20. Détecteur selon une des revendications 17 à 19,
    caractérisé en ce qu'il présente un élément solaire et une batterie.
EP98909306A 1997-02-04 1998-01-28 Procede de detection de l'etat du trafic routier, detecteur et centrale Expired - Lifetime EP0958563B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19706044 1997-02-04
DE19706044 1997-02-04
DE19755459 1997-12-03
DE19755459A DE19755459A1 (de) 1997-02-04 1997-12-03 Verfahren zur Verkehrslageerfassung, Detektor und Zentrale
PCT/DE1998/000276 WO1998034209A1 (fr) 1997-02-04 1998-01-28 Procede de detection de l'etat du trafic routier, detecteur et centrale

Publications (2)

Publication Number Publication Date
EP0958563A1 EP0958563A1 (fr) 1999-11-24
EP0958563B1 true EP0958563B1 (fr) 2003-05-28

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EP98909306A Expired - Lifetime EP0958563B1 (fr) 1997-02-04 1998-01-28 Procede de detection de l'etat du trafic routier, detecteur et centrale

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EP (1) EP0958563B1 (fr)
AT (1) ATE241840T1 (fr)
ES (1) ES2195324T3 (fr)
WO (1) WO1998034209A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2514586B (en) * 2013-05-30 2015-07-01 Swarco Traffic Systems Gmbh Road construction site management system and field element for a road construction site management system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8826624D0 (en) * 1988-11-14 1988-12-21 Martell D K Traffic congestion monitoring system
US5289183A (en) * 1992-06-19 1994-02-22 At/Comm Incorporated Traffic monitoring and management method and apparatus
CZ294596B6 (cs) * 1995-03-23 2005-02-16 T-Mobile Deutschland Gmbh Způsob a zařízení ke zjišťování dynamických dopravních informací

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ES2195324T3 (es) 2003-12-01
ATE241840T1 (de) 2003-06-15
EP0958563A1 (fr) 1999-11-24
WO1998034209A1 (fr) 1998-08-06

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