EP2186077A1 - Procédé et dispositif de commande du trafic routier - Google Patents

Procédé et dispositif de commande du trafic routier

Info

Publication number
EP2186077A1
EP2186077A1 EP08786746A EP08786746A EP2186077A1 EP 2186077 A1 EP2186077 A1 EP 2186077A1 EP 08786746 A EP08786746 A EP 08786746A EP 08786746 A EP08786746 A EP 08786746A EP 2186077 A1 EP2186077 A1 EP 2186077A1
Authority
EP
European Patent Office
Prior art keywords
traffic light
vehicle
traffic
database
switching times
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.)
Granted
Application number
EP08786746A
Other languages
German (de)
English (en)
Other versions
EP2186077B1 (fr
Inventor
Ulrich STÄHLIN
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.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
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
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of EP2186077A1 publication Critical patent/EP2186077A1/fr
Application granted granted Critical
Publication of EP2186077B1 publication Critical patent/EP2186077B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
    • G08G1/096805—Systems involving transmission of navigation instructions to the vehicle where the transmitted instructions are used to compute a route
    • G08G1/096827—Systems involving transmission of navigation instructions to the vehicle where the transmitted instructions are used to compute a route where the route is computed onboard
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place

Definitions

  • the invention relates to a method and a device for controlling the traffic flow. It is provided that the information about the time until switching a traffic light to another traffic light phase, i. in particular red, yellow or green, is used to give the driver of a vehicle a speed recommendation for approaching the traffic light.
  • a traffic light in the sense of the invention is any traffic light system that gives instructions to vehicles in traffic.
  • the information about the duration until the change of the traffic light to the next traffic light phase is used to indicate to the driver at which speed he has a green wave, ie whether he is still at green, the traffic light can happen or this will switch to red before and forces him to stop.
  • the vehicle In order to realize this function of the traffic light phase assistant, it is necessary for the vehicle to know the switching times between the individual phases of the traffic light.
  • a direct communication between the traffic light and the vehicle is used, via which the switching times is communicated.
  • DSRC Dicated Short Range Communication
  • Object of the present invention is therefore to achieve an improvement in the determination of the speed recommendation, with a total of more vehicles to be achieved.
  • the position and the switching times of a traffic light for a plurality of traffic lights are stored in a database with the function of a server. Via a mobile radio communication connection, this data (position and switching times) can be called up by a motor vehicle, so that the driver of the vehicle is given the speed recommendation using this information, ie in particular switching times and / or position of the traffic light.
  • this data position and switching times
  • a motor vehicle Via a mobile radio communication connection, this data (position and switching times) can be called up by a motor vehicle, so that the driver of the vehicle is given the speed recommendation using this information, ie in particular switching times and / or position of the traffic light.
  • the central management of the switching times of the traffic lights offers an advantage in traffic planning, since these data can also be used in the development of traffic concepts and they can enter into simulations.
  • the position of the vehicle and the position of the traffic light can be taken into account in a digital road map in which, for example, the maximum permissible speeds are also noted. In this case, this speed in the data transmission can not be transmitted.
  • this method variant allows a prediction of whether a traffic light is located in the traffic route of the vehicle, and the retrieval of the switching times to this traffic light in advance by the vehicle.
  • the database for this is preferably sorted in such a way that the retrieval of the data takes place on the basis of the position data of the traffic light and / or the vehicle, i. the traffic lights in the database are sorted according to preferably global coordinates of a position or navigation system, in order, for example, to transmit the switching times of the coming traffic light and, if appropriate, the subsequent traffic lights on the basis of transmitted vehicle positions.
  • a further improvement of the prediction accuracy can be achieved if navigation data of the vehicle is taken into account in the speed recommendation.
  • this can be done, in particular, by taking into account additional traffic lights on the route for determining the speed recommendation, and by reaching a green wave for several consecutive traffic lights even when departing from a main traffic route.
  • the traffic light phases are often preconfigured to set a green wave.
  • the navigation data of the vehicle can also be interpreted to determine a more likely route along a route and to issue a speed recommendation for this purpose.
  • the current or a currently averaged speed of the vehicle is taken into account in the speed recommendation, for example by a speed corridor lying around this current or currently averaged speed.
  • a feel-good speed of the driver or a traffic situation in determining the speed recommendation can already be taken into account.
  • a positioning or navigation system may in particular be the GPS system or the future European satellite positioning system Galileo or comparable systems based on satellite signals. using accurate time base locations.
  • the mobile radio communication connection is realized by means of 2 G, 2.5 G, 2.75 G, 3 G and / or 4 G mobile radio networks, which provide sufficient data transmission capacities for the data to be transmitted.
  • the invention is not limited to the known mobile communication solutions, but can in principle be implemented with other wireless communication solutions that allow secure data transmission from a central server with database to mobile vehicles and / or traffic lights.
  • the invention also relates to an apparatus for controlling the traffic flow for use with a traffic light phase assistant according to the features of claim 10.
  • the traffic light phase assistant used with the apparatus is adapted to the driver based on information about the time until the traffic light turns to another traffic light phase Give a vehicle a speed recommendation for approaching the traffic light.
  • the device according to the invention can be designed both for connection to a traffic light phase assistant and also contain an integrated traffic light phase assistant.
  • the device is provided in particular in a data server of a database in which the position and the switching times of a traffic light for a plurality of traffic lights are stored.
  • Switching times represent the switching times between the traffic light phases (for example red, yellow, green), it also being sufficient for carrying out the method according to the invention to take into account only the switching times for the phases red and green, since the yellow phases are very short and at one Speed recommendation does not necessarily have to be considered.
  • a mobile communication device is connected to a query of the Position and the switching times of one or more traffic lights over a cellular connection allows.
  • the database or the data server on which the database is installed can be set up in a function as a control device, in particular for carrying out the method described above or parts thereof.
  • the data server is connected to a receiver of a particular global positioning or navigation system and is adapted to determine the time base of the positioning or navigation system.
  • This time base can be used as a reference time to avoid having each traffic light know the reference time itself and must maintain it exactly.
  • a traffic light for carrying out the method according to the invention in predetermined intervals, the time switching points of the individual phases transmitted to the data server, the time between time switching point and transmission is recorded and transmitted. With this information, the data server can then transform the switching time to the reference time and store it based on this time base. Due to the short time between a switching time of a phase change of the traffic light and the transmission to the server no appreciable inaccuracy occurs here. However, this procedure can be dispensed with if the traffic light knows the reference time base itself, for example because it also communicates with a receiver of the positioning or navigation system. or the reference time is synchronized at regular intervals over a communication link.
  • a program is also installed in traffic light controls that specifies the switching times. Then it is also possible, for example, to transfer the program and its start time to the database. Based on this, the database can calculate the switching times for this traffic light and store it explicitly or as a calculation rule in the database. Therefore, it is basically sufficient if the program and the start time are sent only once, especially when starting the operation. For synchronization, however, it is advisable to retransmit the start time and possibly also the program at fixed time intervals. A suitable period is about 24 hours, ie a once-daily synchronization.
  • the device can also have a mobile transmitting and receiving device with an interface to a traffic light phase assistant.
  • This communication device is preferably mounted in a vehicle and may represent a unit with the traffic light phase assistant, which controls the communication device.
  • a control device that is separate from the traffic light phase assistant can also be provided, so that the device can be operated independently of the traffic light phase assistant and only provides it with the required information.
  • the device proposed according to the invention is particularly suitable for retrofitting existing traffic light phase assistants.
  • the transmitting and receiving device and / or the traffic light phase assistant are integrated into a driver assistance system, which also has other functions and is designed in particular as a computer, for example with a programmable microprocessor or comparable arithmetic unit.
  • the mobile part of the device according to the invention which is attributable to the vehicle can also be designed as a computer program product which sets up the processor of the driver assistance system for carrying out the method described above and the components present in the vehicle, in particular the transmitting and receiving device and the traffic light phase assistant uses inventive way.
  • Fig. 1 shows schematically an embodiment of the device according to the invention in carrying out the proposed method.
  • a device 1 for controlling the traffic flow is shown having a data server 2 with a database in which the position P and the switching times Si a traffic light 3 for a plurality of traffic lights 3 are deposited, in Fig. 1 only a record (P, Si) of a traffic light 3 is shown.
  • a mobile radio communication device 4 Connected to the database 2 of the data server is a mobile radio communication device 4, which makes it possible to query the position P and the switching times Si of traffic lights 3 via a mobile radio connection 5.
  • the mobile radio connection 5 can be, for example, one of the typically commercially available mobile radio networks of the generations 2 G, 2.5 G, 2.75 G, 3 G or 4 G, which enable transmission of data at different transmission speeds.
  • the traffic light phase assistant 8 is set up to give the driver of the vehicle 6 a speed recommendation for approaching the traffic light 3 on the basis of information about the time until switching of the traffic light 3 (switching times Si) to another traffic light phase, so that it is possible during the traffic light Green phase reached and at the traffic light 3 does not have to stop. For this purpose, it is controlled by the traffic light phase assistant 8 queried in the data server or the database 2, which switching times Si are to be expected.
  • the traffic light 3 is indicated by its position identification data P, which knows the car from a also associated with the mobile transceiver positioning or navigation system 9.
  • the positioning or navigation system 9 also allows from the current position of the vehicle 6 and the position P of the traffic light 3 by the traffic light phase assistant 8 to give a very accurate speed recommendation for the approach to the traffic light 3, in which possibly even the current maximum speed or Road condition is taken into account.
  • the time base of a global positioning or navigation system is used, which also uses the positioning or navigation system 9 in the vehicle 6.
  • This may, for example, be the currently widespread GPS system, although other, for example, future systems such as the Galileo system come into question.
  • the device 1 In order to set the switching times Si of the traffic light 3 to the common reference time, the device 1 has a receiver 10, which is in communication with the mobile radio communication device 4 and the data server or the database 2, of the positioning or navigation system, which is set up for the time base of the positioning or navigation system.
  • the switching times Si transmitted by the traffic light 3, for example also by means of a mobile radio connection 5, in the database 2 can be compared with the reference in the entire system. be filed. In this way, synchronization problems of different clocks in different components of the entire system are avoided by using the common time base.
  • the traffic lights 3 communicate via the mobile radio connection 5 at regular intervals and / or a change in the switching times Si these switching times the data server with the database 2, so this can be kept dynamically updated by a continuous update of the switching times Si.
  • dynamically changing switching times can be detected in the database 2 and provided with a flag which allows faster access to these switching times for a continuous update. This can be done for example by a special indexing of these switching times in the database 2.
  • the switching times Si are stored in connection with the position P of a traffic light 3 for their identification in a preferably central database 2 and can there without a direct ad-hoc radio connection between the traffic light 3 and the vehicle 6 via a mobile phone connection 5 are retrieved.
  • Mobile communication devices with a mobile transmitting and receiving device 7 are often installed in vehicles 6, for example, for a Ecall, so that can be used on existing communication technology. This is technically easier than building ad-hoc network Links. In this way, the required information is available to a traffic light phase assistant 8 in a technically simple manner, without having to set up a direct radio communication connection between the traffic light 3 and the vehicle 6.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Traffic Control Systems (AREA)
  • Navigation (AREA)

Abstract

L'invention concerne un procédé et un dispositif de commande du trafic routier. Le procédé consiste à employer l'information concernant la durée jusqu'à commutation d'un feu tricolore (3) vers une autre phase afin de donner au conducteur d'un véhicule (6) un conseil de vitesse pour l'approche du feu tricolore (3). Pour améliorer la détermination du conseil de vitesse, la position (P) et les instants de commutation (Si) d'un feu tricolore (3) sont enregistrés dans une base de données (2) et peuvent être consultés depuis un véhicule (6) au moyen d'une liaison de communication de téléphonie mobile (5), le conseil de vitesse étant donné au conducteur du véhicule (6) à l'aide de ces informations.
EP08786746.1A 2007-08-29 2008-08-01 Procédé et dispositif de commande du trafic routier Active EP2186077B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007040985 2007-08-29
PCT/EP2008/060126 WO2009027173A1 (fr) 2007-08-29 2008-08-01 Procédé et dispositif de commande du trafic routier

Publications (2)

Publication Number Publication Date
EP2186077A1 true EP2186077A1 (fr) 2010-05-19
EP2186077B1 EP2186077B1 (fr) 2017-06-14

Family

ID=39932708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08786746.1A Active EP2186077B1 (fr) 2007-08-29 2008-08-01 Procédé et dispositif de commande du trafic routier

Country Status (7)

Country Link
US (1) US20110095906A1 (fr)
EP (1) EP2186077B1 (fr)
JP (1) JP2010537333A (fr)
KR (1) KR20100057669A (fr)
CN (1) CN101842819A (fr)
DE (1) DE102008035873A1 (fr)
WO (1) WO2009027173A1 (fr)

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Also Published As

Publication number Publication date
US20110095906A1 (en) 2011-04-28
DE102008035873A1 (de) 2010-02-11
EP2186077B1 (fr) 2017-06-14
CN101842819A (zh) 2010-09-22
JP2010537333A (ja) 2010-12-02
KR20100057669A (ko) 2010-05-31
WO2009027173A1 (fr) 2009-03-05

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