WO1999063499A2 - Method for detecting traffic status on roads - Google Patents

Method for detecting traffic status on roads Download PDF

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Publication number
WO1999063499A2
WO1999063499A2 PCT/DE1999/001559 DE9901559W WO9963499A2 WO 1999063499 A2 WO1999063499 A2 WO 1999063499A2 DE 9901559 W DE9901559 W DE 9901559W WO 9963499 A2 WO9963499 A2 WO 9963499A2
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WO
WIPO (PCT)
Prior art keywords
traffic
traffic condition
data
vkm
vehicles
Prior art date
Application number
PCT/DE1999/001559
Other languages
German (de)
French (fr)
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WO1999063499A3 (en
Inventor
Reinhold Mertens
Thomas Schmidt
Ralf Willenbrock
Original Assignee
Gedas Telematics 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.)
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Publication date
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Publication of WO1999063499A2 publication Critical patent/WO1999063499A2/en
Publication of WO1999063499A3 publication Critical patent/WO1999063499A3/en

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Classifications

    • 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
    • G08G1/096766Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096775Systems 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
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • 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
    • G08G1/0108Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/0112Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
    • 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
    • G08G1/0125Traffic data processing
    • G08G1/0133Traffic data processing for classifying traffic situation
    • 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
    • G08G1/0137Measuring and analyzing of parameters relative to traffic conditions for specific applications
    • G08G1/0141Measuring and analyzing of parameters relative to traffic conditions for specific applications for traffic information dissemination
    • 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
    • G08G1/096733Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/096741Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where the source of the transmitted information selects which information to transmit to each vehicle

Definitions

  • the invention relates to a method for detecting the traffic condition on roads and highways and stationary and mobile devices for carrying out the same according to the respective preamble of the main ' and secondary claim.
  • a generic method is previously known from the document DE 43 21 437 A1.
  • wireless exchange of traffic data takes place via section beacons between vehicles in traffic and a control center.
  • the driving range is defined by the start and destination, route and time of departure.
  • the control center By periodically polling while the vehicle is traveling, the control center automatically receives from the vehicles the data recorded and processed on board regarding the traffic condition in the area passed through.
  • the head office processes the received data into traffic condition reports, which are made known by radio technology. Disadvantages are, on the one hand, the need to register trips with information on the start and destination, route and departure time, and, on the other hand, the inaccurate location and the time delay due to the periodic polling of the vehicles to record the traffic situation.
  • the object of the invention is to minimize the amount of information to be given by the vehicles on the state of traffic of the streets and highways and to provide stationary and mobile devices for carrying out the method.
  • FIG. 1 shows a diagram of the system for recording the traffic condition
  • FIG. 2 shows a diagram of the vehicle device
  • FIG. 3 shows a diagram of the control center
  • the method according to the invention for recording the traffic state is shown schematically in FIG. 1 and is based on the wireless exchange of traffic data between vehicles F1-F3 in traffic with a vehicle device 1 for recording the driving state and for processing with position and time data and a control center 2 with a data acquisition, evaluation and control unit 20
  • the vehicle devices 1 each have a reception and transmission unit and a location system using signals from satellites S.
  • a mobile radio network with its transmitting, receiving and transmitting devices can serve as the data transmission system 3 between the vehicles 1 and the control center 2.
  • the vehicles 1 provide the local traffic data for routes - StX, StY, StZ - and on the other hand from the control center 2 Control data St / Vkg or individual route information received or sent to authorized vehicles
  • traffic reports 2 can be broadcast globally or locally by the central station 2 via broadcasting stations 4
  • the vehicle devices 1 - see FIG. 2 - have a unit 11 for forming a current traffic classification Vkm from the operating data of the vehicle, which is output, for example, in the following grading a) free, b) lively, c) slow traffic, d) traffic jam
  • gradations are defined, for example, by driving speeds reached in route sections St.
  • traffic file 14 there is a normal timer 12, which possibly also outputs the days of the week and the month, and a GPS location unit 13. Data from the normal timer 12 - h, WT - and the location unit 13 - St - are available from a traffic route and traffic classification file 14, which is hereinafter referred to only as traffic file 14
  • This traffic file 14 contains stored, likely traffic classifications Vkw for traffic conditions according to a to d, as they were called in connection with the unit 11, on routes, for example StX, and time-related - h - and possibly weekdays-related - WT
  • a comparison unit 15 which receives signals from a probable - Vkw - or alternatively one - Vkg - sent from the control center 2 via the data transmission system 3 and the actual current traffic condition Vkm, the above compared traffic conditions will be present in the event of inequality - Vkw or Vkg ⁇ Vkm Data record formed and sent via a transmitter 16 of vehicle device 1.
  • This data record contains the route, for example StX, and its current traffic condition Vkm
  • the following arrangement is present.
  • traffic conditions Vkg of routes St sent by the control center 2 and deviating from the likely traffic condition Vkw are received. If the route comparator and the memory 18 determine the equality of the route St traveled by the vehicle F and the reported route St, the signal of the traffic condition Vkg transmitted is switched on via a priority circuit 19 of the comparison unit 15 instead of the probable traffic condition Vkw. Vehicle devices 1 only report the current traffic condition for such a route section St with the traffic condition Vkg being transmitted if the current traffic condition Vkm differs from the traffic condition Vkg being transmitted.
  • the control center 2 receives and sends data via a data transmission system 3, see FIG. 1.
  • a data acquisition, evaluation and control unit 20 the data coming in from the vehicle devices 1 on traffic conditions ⁇ Vkm from routes St with the probable traffic conditions Vkw on these routes St compared.
  • the structure of the control center 2 as hardware is shown schematically in FIG. 3 as an example.
  • the received data records of vehicles F1 to F3 with the current traffic condition Vkm and the respective route identifier St are broken down into their data components in unit 23.
  • the probable traffic condition Vkw is read from traffic file 21 together with the normal time signal (h; WT) from normal timer 24.
  • the data record Vkg / St can also contain a storage time specification which determines the storage of the data record in the route comparator and memory 18. Stored data records St / VKg are deleted as soon as the transmitted traffic condition Vkg is not equal to the current traffic condition Vkm detected by the vehicle device 1 on this route.
  • St routes e.g. B. Stx to Stz
  • Normal time signal e.g. B. with hour h and weekday WT

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention relates to a method for detecting traffic status on roads and motorways by means of wireless exchange of traffic data between motor vehicles located in said traffic and a centre, whereby the traffic vehicles are fitted with devices that detect traffic status and their own position in addition to being fitted with a transmitter and receiver device. The aim of the invention is to minimize the amount of information to be emitted by the vehicles with relation to the traffic status of roads and motorways in addition to providing fixed and mobile devices to implement said method. This is achieved by providing the motor vehicles (F) with a traffic route and traffic classification data file (14), whereby a stored, probable time and weekday related traffic status (Vkw) can be obtained therefrom using the vehicles' own position data (St), and said traffic status (Vkw) is compared to the momentary traffic status determined in the vehicle (F). In the case of differences between probable and momentary traffic status, a data set that includes position and momentary traffic classification (Vkm) is transmitted in addition to being received and evaluated by the centre (2).

Description

Verfahren zum Erfassen des Verkehrszustandes auf StraßenMethod for recording traffic conditions on roads
Die Erfindung betrifft ein Verfahren zum Erfassen des Verkehrszustandes auf Straßen und Autobahnen und ortsfeste und mobile Einrichtungen zur Durchführung desselben gemäß dem jeweiligen Oberbegriff von Haupt-'und Nebenanspruch. Vorbekannt ist ein gattungsgemäßes Verfahren aus der Schrift DE 43 21 437 A1. Zum Erfassen des Verkehrszustandes auf Straßen und Autobahnen mittels individueller Fahrtinformationen erfolgt ein drahtloser Austausch von Verkehrsdaten über Abschnittsbaken zwischen im Verkehr befindlichen Fahrzeugen und einer Zentrale. Durch bei Start der Fahrzeuge erfolgte Angaben von Start- und Zielort, Fahrstrecke und Abfahrtszeit ist der Fahrbereich abgesteckt.The invention relates to a method for detecting the traffic condition on roads and highways and stationary and mobile devices for carrying out the same according to the respective preamble of the main ' and secondary claim. A generic method is previously known from the document DE 43 21 437 A1. In order to record the state of traffic on roads and highways using individual travel information, wireless exchange of traffic data takes place via section beacons between vehicles in traffic and a control center. The driving range is defined by the start and destination, route and time of departure.
Durch periodische Abfrage während der Fahrt erhält die Zentrale von den Fahrzeugen automatisch die an Bord erfaßten und aufbereiteten Daten zum Verkehrszustand im durchfahrenen Bereich. Die Zentrale verarbeitet die eingegangenen Daten zu Ver- kehrszustandsberichten, die funktechnisch bekannt gemacht werden. Nachteilig ist einerseits die Notwendigkeit der Anmeldung von Fahrten mit Angaben zu Start- und Zielort, Fahrstrecke und Abfahrtszeit sowie andererseits die ungenaue Ortung und der Zeitverzug durch das periodische Abfragen der Fahrzeuge zum Erfassen der Verkehrssituation.By periodically polling while the vehicle is traveling, the control center automatically receives from the vehicles the data recorded and processed on board regarding the traffic condition in the area passed through. The head office processes the received data into traffic condition reports, which are made known by radio technology. Disadvantages are, on the one hand, the need to register trips with information on the start and destination, route and departure time, and, on the other hand, the inaccurate location and the time delay due to the periodic polling of the vehicles to record the traffic situation.
Aufgabe der Erfindung ist es bei einem gattungsgemäßen Verfahren die Menge der von den Fahrzeugen abzugebenden Informationen zum Verkehrszustand der Straßen und Autobahnen zu minimieren und ortsfeste und mobile Einrichtungen zur Durchfüh-rung des Verfahrens zu schaffen.In a generic method, the object of the invention is to minimize the amount of information to be given by the vehicles on the state of traffic of the streets and highways and to provide stationary and mobile devices for carrying out the method.
Erfindungsgemäß wird dies durch die im Haupt- und dem Unteranspruch 2 genannten Verfahrensmerkmale erreicht.According to the invention, this is achieved by the method features mentioned in the main and subclaim 2.
Durch die Verwendung einer Verkehrswege- und Verkehrsklassifikationsdatei für positions- bzw. strecken-, zeit- und wochentagebezogene wahrscheinliche Verkehrs- klassifikationen wird nur bei Abweichungen der momentanen von der wahrscheinlichen Verkehrsklassifikation eine Meldung an die Zentrale notwendig Dies verhindert unnötigen und kostenaufwendigen Datenaustausch zwischen den Fahrzeugen und der Zentrale sowie Verarbeitungsaufwand für Daten, die keine Veränderungen des Verkehrszustandes anzeigenThrough the use of a traffic route and traffic classification file for position-, route-, time- and weekday-related probable traffic Classifications are only required if the current traffic classification deviates from the likely traffic classification. This prevents unnecessary and costly data exchange between the vehicles and the control center, as well as processing costs for data that do not indicate any changes in the traffic condition
Anhand einer Zeichnung soll nachfolgend ein Ausfuhrungsbeispiel zur Durchfuhrung des erfindungsgemaßen Verfahrens und der zugehörigen ortsfesten und mobilen Einrichtungen beschrieben werden Es zeigtAn exemplary embodiment for carrying out the method according to the invention and the associated stationary and mobile devices will be described below with the aid of a drawing
Fig 1 ein Schema des Systems zum Erfassen des Verkehrszustandes, Fig 2 ein Schema des Fahrzeuggerates, Fig 3 ein Schema der Zentrale1 shows a diagram of the system for recording the traffic condition, FIG. 2 shows a diagram of the vehicle device, FIG. 3 shows a diagram of the control center
Das erfindungsgemaße Verfahren zum Erfassen des Verkehrszustandes ist in Fig 1 schematisch dargestellt und beruht auf dem drahtlosen Austausch von Verkehrsdaten zwischen im Verkehr befindlichen Fahrzeugen F1 - F3 mit einem Fahrzeuggerat 1 zum Erfassen des Fahrzustandes und zum Verarbeiten mit Positions- und Zeitdaten und einer Zentrale 2 mit einer Datenerfassungs-, Auswerte- und Steuereinheit 20 Die Fahrzeuggerate 1 weisen jeweils eine Empfangs- und Sendeeinheit sowie ein Ortungssystem unter Nutzung von Signalen von Satelliten S aufThe method according to the invention for recording the traffic state is shown schematically in FIG. 1 and is based on the wireless exchange of traffic data between vehicles F1-F3 in traffic with a vehicle device 1 for recording the driving state and for processing with position and time data and a control center 2 with a data acquisition, evaluation and control unit 20 The vehicle devices 1 each have a reception and transmission unit and a location system using signals from satellites S.
Als Datenubermittlungssystem 3 zwischen den Fahrzeugen 1 und der Zentrale 2 kann beispielsweise ein Mobilfunknetz mit seinen Sende-, Empfangs- und Ubermittlungs- einnchtungen dienen Einerseits werden von den Fahrzeugen 1 die ortlichen Verkehrsdaten zu Strecken - StX, StY, StZ - und andererseits von der Zentrale 2 Steuerdaten St/Vkg bzw auch individuelle Streckenhinweise an berechtigte Fahrzeuge empfangen bzw gesendetFor example, a mobile radio network with its transmitting, receiving and transmitting devices can serve as the data transmission system 3 between the vehicles 1 and the control center 2. On the one hand, the vehicles 1 provide the local traffic data for routes - StX, StY, StZ - and on the other hand from the control center 2 Control data St / Vkg or individual route information received or sent to authorized vehicles
Weiterhin können von der Zentrale 2 Verkehrsmeldungen über Rundfunksender 4 global oder örtlich spezifiziert verbreitet werden Die Fahrzeuggerate 1 - siehe Fig 2 - weisen eine Einheit 11 zur Bildung einer momentanen Verkehrsklassifikation Vkm aus den Betriebsdaten des Fahrzeuges auf, die z B in folgender Stufung ausgegeben wird a) freier, b) reger, c) stockender Verkehr, d) StauFurthermore, traffic reports 2 can be broadcast globally or locally by the central station 2 via broadcasting stations 4 The vehicle devices 1 - see FIG. 2 - have a unit 11 for forming a current traffic classification Vkm from the operating data of the vehicle, which is output, for example, in the following grading a) free, b) lively, c) slow traffic, d) traffic jam
Diese Stufungen werden beispielsweise durch erreichte Fahrgeschwindigkeiten in Streckenabschnitten St definiertThese gradations are defined, for example, by driving speeds reached in route sections St.
Weiterhin ist ein Normalzeitgeber 12, der die Tageszeit ggf auch die Wochentage und den Monat ausgibt, und eine GPS-Ortungseinheit 13 vorhanden Daten des Normalzeitgebers 12 - h, WT - und der Ortungseinheit 13 - St - liegen einer Verkehrswege- und Verkehrsklassifikationsdatei 14 an, die im weiteren nur noch als Verkehrsdatei 14 bezeichnet wirdFurthermore, there is a normal timer 12, which possibly also outputs the days of the week and the month, and a GPS location unit 13. Data from the normal timer 12 - h, WT - and the location unit 13 - St - are available from a traffic route and traffic classification file 14, which is hereinafter referred to only as traffic file 14
Diese Verkehrsdatei 14 enthalt auf Strecken, z B StX, und zeitbezogene - h - und ggf wochentagebezogen - WT - gespeicherte, wahrscheinliche Verkehrsklassifikatio- nen Vkw für Verkehrszustande gemäß a bis d, wie sie im Zusammenhang mit der Einheit 11 genannt wurdenThis traffic file 14 contains stored, likely traffic classifications Vkw for traffic conditions according to a to d, as they were called in connection with the unit 11, on routes, for example StX, and time-related - h - and possibly weekdays-related - WT
Diese wahrscheinlichen Verkehrszustande VKw können beispielsweise erfahrungsgemäß, exprimentell oder statistisch gewonnen worden sein und bilden die Grundlage jeweils für die Verkehrsdatei 14 der Fahrzeuge, z B F1 bis F3 , und der Verkehrsdatei 21 , siehe Fig 1 , in der Datenerfassungs-, Auswerte- und Steuereinheit 20 Die Verkehrsdatei 14 ist in den Fahrzeugen F mittels momentaner Standortdaten St und dem anliegenden Zeitsignal des Normalzeitgebers 12 auslesbarThese probable traffic conditions VKw can, for example, have been gained from experience, experimentally or statistically and form the basis for the traffic file 14 of the vehicles, for example F1 to F3, and the traffic file 21, see FIG. 1, in the data acquisition, evaluation and control unit The traffic file 14 can be read out in the vehicles F by means of current location data St and the applied time signal of the normal timer 12
In einer Vergleichsemheit 15, der Signale eines wahrscheinlichen - Vkw - bzw alternativ einer von der Zentrale 2 über das Datenubermittlungssystem 3 gesendeten - Vkg - und des tatsachlichen momentanen Verkehrszustandes Vkm anliegen, wird bei Ungleichheit - Vkw oder Vkg ≠ Vkm - der vorstehenden verglichenen Verkehrszustande ein Datensatz gebildet und über einen Sender 16 des Fahrzeuggerates 1 gesendet Dieser Datensatz enthalt die Strecke, z B StX , und deren momentanen Verkehrszustand Vkm Um für bereits bei der Zentrale 2 bekannte, von den wahrscheinlichen Verkehrszustand Vkw abweichende Verkehrszustände den Meldeverkehr der Fahrzeuggerät 1 zu unterbinden, ist folgende Anordnung vorhanden.In a comparison unit 15, which receives signals from a probable - Vkw - or alternatively one - Vkg - sent from the control center 2 via the data transmission system 3 and the actual current traffic condition Vkm, the above compared traffic conditions will be present in the event of inequality - Vkw or Vkg ≠ Vkm Data record formed and sent via a transmitter 16 of vehicle device 1. This data record contains the route, for example StX, and its current traffic condition Vkm In order to prevent the traffic of the vehicle device 1 for traffic conditions which are already known at the control center 2 and differ from the likely traffic condition Vkw, the following arrangement is present.
Über den Empfänger 17 werden von der Zentrale 2 gesendete, von dem wahrscheinlichen Verkehrszustand Vkw abweichende Verkehrszustände Vkg von Strecken St empfangen. Bei im Streckenvergleicher und Speicher 18 festgestellter Gleichheit der vom Fahrzeug F gefahrenen und der gemeldeten Strecke St wird das Signal des gesendeten Verkehrszustandes Vkg über eine Vorrangschaltung 19 der Vergleichseinheit 15 anstelle des wahrscheinlichen Verkehrszustandes Vkw angeschaltet. Fahrzeuggeräte 1 melden den momentanen Verkehrszustand für einen solchen Streckenabschnitt St mit gesendeten Verkehrszustand Vkg nur, wenn der momentane Verkehrszustand Vkm von dem gesendeten Verkehrszustand Vkg abweicht.Via the receiver 17, traffic conditions Vkg of routes St sent by the control center 2 and deviating from the likely traffic condition Vkw are received. If the route comparator and the memory 18 determine the equality of the route St traveled by the vehicle F and the reported route St, the signal of the traffic condition Vkg transmitted is switched on via a priority circuit 19 of the comparison unit 15 instead of the probable traffic condition Vkw. Vehicle devices 1 only report the current traffic condition for such a route section St with the traffic condition Vkg being transmitted if the current traffic condition Vkm differs from the traffic condition Vkg being transmitted.
Die Zentrale 2 empfängt und versendet Daten über ein Datenübermittlungssystem 3, siehe Fig. 1. In einer Datenerfassungs-, Auswerte- und Steuereinheit 20 werden die von den Fahrzeuggeräten 1 eingehenden Daten zu Verkehrszuständeπ Vkm von Strecken St mit den wahrscheinlichen Verkehrszuständen Vkw auf diesen Strecken St verglichen. Beispielhaft schematisiert ist der Aufbau der Zentrale 2 als Hardware in Fig. 3 dargestellt.The control center 2 receives and sends data via a data transmission system 3, see FIG. 1. In a data acquisition, evaluation and control unit 20, the data coming in from the vehicle devices 1 on traffic conditions π Vkm from routes St with the probable traffic conditions Vkw on these routes St compared. The structure of the control center 2 as hardware is shown schematically in FIG. 3 as an example.
Die empfangenen Datensätze der Fahrzeuge F1 bis F3 mit dem jeweils momentanen Verkehrszustand Vkm und der jeweiligen Streckenkennung St werden in der Einheit 23 in ihre Datenbestandteile zerlegt. Über die Streckenkennung St wird aus der Verkehrsdatei 21 der wahrscheinliche Verkehrszuzustand Vkw zusammen mit dem Normalzeitsignal (h; WT) aus dem Normalzeitgeber 24 ausgelesen.The received data records of vehicles F1 to F3 with the current traffic condition Vkm and the respective route identifier St are broken down into their data components in unit 23. Via route identifier St, the probable traffic condition Vkw is read from traffic file 21 together with the normal time signal (h; WT) from normal timer 24.
In einer Vergleichseinheit 25, der Signale eines wahrscheinlichen Vkw und des tatsächlichen momentanen Verkehrszustandes Vkm einer Strecke St anliegen, werden Verkehrszustände - Vkw = Vkm - verglichen. Bei Ungleichheit der verglichenen Verkehrszustände - Vkw ≠ Vkm - wird in einer Einheit 26 ein Datensatz VKg/St gebildet, der die Strecke, z.B. StX, und deren momentanen Verkehrszustand Vkm kennzeichnet und über das Datenübermittlungssystem 3 gesendet und von den Fahrzeuggeräten 1 empfangen wird.Traffic conditions - Vkw = Vkm - are compared in a comparison unit 25 which receives signals from a probable Vkw and the actual current traffic condition Vkm of a route St. If the compared traffic conditions - Vkw ≠ Vkm - are in a unit 26, a data record VKg / St is formed which identifies the route, for example StX, and its current traffic condition Vkm and transmitted via the data transmission system 3 and received by the vehicle devices 1.
Der Datensatz Vkg/St kann weiterhin eine Speicherzeitangabe enthalten, die die Speicherung des Datensatzes im Streckenvergleicher und Speicher 18 zeitlich bestimmt. Gespeicherte Datensätze St/VKg werden gelöscht, sobald der gesendete Verkehrszustand Vkg ungleich des vom Fahrzeuggerät 1 erfaßten momentanen Verkehrszustandes Vkm auf dieser Strecke ist.The data record Vkg / St can also contain a storage time specification which determines the storage of the data record in the route comparator and memory 18. Stored data records St / VKg are deleted as soon as the transmitted traffic condition Vkg is not equal to the current traffic condition Vkm detected by the vehicle device 1 on this route.
Es sei nochmals angemerkt, daß Vergleiche vom momentanen Verkehrszustand mit wahrscheinlichen oder gemeldeten Verkehrszustand ausschließlich strecken- bzw. positionsbezogen erfolgen. It should be noted again that comparisons of the current traffic condition with the probable or reported traffic condition are made only in relation to the route or position.
Bezugszeichenaufstellung und DefinitionenList of reference symbols and definitions
1 Fahrzeuggerät1 vehicle device
2 Zentrale2 headquarters
3 Datenübermittlungssystem3 data transmission system
4 Rundfunksender4 radio stations
11 Einheit zur Bildung einer Verkehrskiasεifikation11 Unit for the formation of a traffic classification
12 Normalzeitgeber12 normal timers
13 Ortungseinheit13 locating unit
14 Verkehrsdatei14 Traffic file
15 Vergleichseinheit15 comparison unit
16 Sender16 transmitters
17 Empfänger17 recipients
18 Streckenvergleicher und Speicher18 route comparator and memory
19 Vorrangschaltung19 Priority circuit
20 Datenerfassungs-, Auswerte- und Steuereinheit20 data acquisition, evaluation and control unit
21 Verkehrsdatei21 Traffic file
23 Einheit, zerlegt Datensatz Vkm/St in Vkm und St23 unit, data record Vkm / St divided into Vkm and St
24 Normalzeitgeber24 normal timers
25 Vergleichseinheit25 comparison unit
26 Einheit, bildet Datensatz Vkg/St26 unit, forms data set Vkg / St
St Strecken, z. B. Stx bis StzSt routes, e.g. B. Stx to Stz
F1 und F3 Fahrzeuge mit Fahrzeuggerät 1F1 and F3 vehicles with vehicle device 1
Normalzeitsignal, z. B. mit Stunde h und Wochentag WTNormal time signal, e.g. B. with hour h and weekday WT
Vkg gemeldeter Verkehrszustand Vkw wahrscheinlicher Verkehrszustand Vkm momentaner Verkehrszustand Vkg reported traffic condition Vkw probable traffic condition Vkm current traffic condition

Claims

Patentansprüche claims
1 Verfahren zum Erfassen des Verkehrszustandes auf Straßen und Autobahnen durch drahtlosen Austausch von Verkehrsdaten zwischen im Verkehr befindlichen Fahrzeugen und einer Zentrale, wobei die Fahrzeuge mit Erfassungsgeraten für den Verkehrszustand, die eigene Position und Sende- und Empfangsgerät ausgestattet sind, dadurch gekennzeichnet,1 Method for detecting the traffic condition on roads and highways by wireless exchange of traffic data between vehicles in traffic and a control center, the vehicles being equipped with detection devices for the traffic condition, their own position and transmitting and receiving device, characterized in that
- daß die Fahrzeuge (F) mit einer Verkehrswege- und Verkehrsklassifikationsda- tei (14) ausgerüstet sind, aus der mittels der eigenen Positionsdaten (St), zeit- und wochentagebezogen, ein gespeicherter, wahrscheinlicher Verkehrszustand (Vkw) ausgelesen wird,- that the vehicles (F) are equipped with a traffic route and traffic classification file (14), from which a stored, probable traffic condition (Vkw) is read out by means of their own position data (St), based on time and days of the week,
- daß der Verkehrszustand (Vkw) mit dem im Fahrzeug (F) ermittelten momentanen Verkehrszustand (Vkm) verglichen wird,- that the traffic condition (Vkw) is compared with the current traffic condition (Vkm) determined in the vehicle (F),
- daß bei Ungleichheit vom wahrscheinlichen und momentanen Verkehrszustand ein Datensatz mit Positions- und momentaner Verkehrsklassifikation (Vkm) gesendet wird, welche die Zentrale (2) empfangt und auswertet- That in the event of an inequality of the probable and current traffic conditions, a data record with position and current traffic classification (Vkm) is sent, which the control center (2) receives and evaluates
2 Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß die Zentrale (2) beim Abweichen des momentanen Verkehrszustandes (Vkm) von dem in der Verkehrsdatei (14) der Fahrzeuge (F) gespeicherten, positions-, zeit- und wochentagsbezogen Verkehrszustand (Vkw) einen Datensatz mit positions- bezogener. momentanen Verkehrszustand (Vkg/St) sendet, wobei dieser Datensatz (Vkg) in den Fahrzeugen (F) empfangen wird und bei Gleichheit der eigenen Position (St) und der im Datensatz der Zentrale (2) enthaltenen Position (St) der Vergleichseinheit (15) den im Datensatz übermittelten Verkehrszustand (Vkg) alternativ angeschlossen anliegt 2 The method according to claim 1, characterized in that the center (2) when the current traffic condition (Vkm) deviates from the position, time and weekday traffic condition (Vkw) stored in the traffic file (14) of the vehicles (F), a data record with position related. transmits the current traffic condition (Vkg / St), this data record (Vkg) being received in the vehicles (F) and if the own position (St) and the position (St) contained in the data record of the control center (2) of the comparison unit (15 ) the traffic condition (Vkg) transmitted in the data record is alternatively connected
Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß die Zentrale (2) in kürzeren Zeitintervallen als die Fahrzeuge (F) ihre Datensatze (StA/kg) sendet Method according to Claim 1, characterized in that the center (2) sends its data records (StA / kg) at shorter time intervals than the vehicles (F)
Verfahren nach den Ansprüchen 1 und 2 dadurch gekennzeichnet, daß die Zentrale (2) Datensatze (StA/kg) mit einer Haltedauer (tsp) sendet, die im Stromvergleicher und Speicher (18) im Fahrzeug (F) für die Haltedauer (tsp) gespeichert werden und positionsbezogen abrufbar und dem Vergleicher (15) an- sch eßbar sindMethod according to claims 1 and 2, characterized in that the center (2) sends data records (StA / kg) with a holding period (tsp), which are stored in the current comparator and memory (18) in the vehicle (F) for the holding period (tsp) and can be called up according to position and can be connected to the comparator (15)
Verfahren nach Anspruch 4 dadurch gekennzeichnet, daß die im Speicher (18) gespeicherten Datensatze (StA/kg) gemeldeter Verkehrszustände geloscht werden, sobald sie ungleich dem im Fahrzeug (F) ermittelten momentanen Verkehrszustand (Vkm) sindMethod according to Claim 4, characterized in that the data sets (StA / kg) of reported traffic conditions stored in the memory (18) are deleted as soon as they are not equal to the current traffic condition (Vkm) determined in the vehicle (F)
Anlage zum Erfassen des Verkehrszustandes gemäß dem Verfahren nach Anspruch 1 , mit einer ortsfesten Zentrale und mit mobilen Einrichtungen zum Erfassen der Verkehrssituation und Ermitteln des momentanen Standortes, wobei die Zentrale mit den mobilen Einrichtungen über Kommunikationseinrichtungen wechselseitig Daten austauschen, dadurch gekennzeichnet, daß die Fahrzeuge (F) und die Zentrale (2) je mit einer gleichartigen Verkehrswege- und Verkehrsklassifikationsdatei (14/21 ) für den wahrscheinlichen momentanen Verkehrszustand (Vkm) ausgestattet sind, - wobei die Verkehrswege- und Verkehrsklassifikationsdatei (14) im Fahrzeuggerät (1) mittels der momentanen Standortdaten (St) und in der Zentrale (2) mittels der Standortdaten (St) von Verkehrsmeldungen (Vkm/St) der Fahrzeuggeräte (1 ) aus- iesbar sind.System for recording the traffic condition according to the method of claim 1, with a fixed center and with mobile devices for recording the traffic situation and determining the current location, the center exchanging data with the mobile devices via communication devices, characterized in that the vehicles ( F) and the control center (2) are each equipped with a similar traffic route and traffic classification file (14/21) for the probable current traffic condition (Vkm), - Wherein the traffic route and traffic classification file (14) can be identified in the vehicle device (1) by means of the current location data (St) and in the control center (2) by means of the location data (St) of traffic reports (Vkm / St) of the vehicle devices (1) are.
7. Anlage nach Anspruch 6, dadurch gekennzeichnet, daß das Fahrzeuggerät (1 ) eine Vergleichseinheit (15) für einen wahrscheinlichen Verkehrszustand (Vkw) bzw. alternativ einen gesendeten Verkehrszustand (VKg) und einen momentanen Verkehrszustand (Vkm) aufweist, die bei Ungleichheit dieser verglichenen Verkehrszustände (Vkw oder Vkg ≠ Vkm) einen Datensatz (VKm/St) für die Zentrale (2) sendet.7. System according to claim 6, characterized in that the vehicle device (1) has a comparison unit (15) for a probable traffic condition (Vkw) or alternatively a transmitted traffic condition (VKg) and a current traffic condition (Vkm), if these are not equal compared traffic conditions (Vkw or Vkg ≠ Vkm) sends a data record (VKm / St) for the head office (2).
8. Anlage nach Anspruch 7, dadurch gekennzeicnet, daß der Vergleichseinheit (15) eine Vorrangschaltung (19) für den gesendeten Verkehrszustand (Vkg) gegenüber dem wahrscheinlichen Verkehrszustand (Vkw) vorgeschaltet ist. 8. System according to claim 7, characterized in that the comparison unit (15) is preceded by a priority circuit (19) for the transmitted traffic condition (Vkg) over the probable traffic condition (Vkw).
PCT/DE1999/001559 1998-05-29 1999-05-27 Method for detecting traffic status on roads WO1999063499A2 (en)

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