EP1750237A1 - Installation de commande du traffic et procédé destinés à la communication entre des installations de commande du traffic voisines - Google Patents

Installation de commande du traffic et procédé destinés à la communication entre des installations de commande du traffic voisines Download PDF

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Publication number
EP1750237A1
EP1750237A1 EP06117086A EP06117086A EP1750237A1 EP 1750237 A1 EP1750237 A1 EP 1750237A1 EP 06117086 A EP06117086 A EP 06117086A EP 06117086 A EP06117086 A EP 06117086A EP 1750237 A1 EP1750237 A1 EP 1750237A1
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EP
European Patent Office
Prior art keywords
communication device
traffic control
traffic
control system
vehicle
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.)
Withdrawn
Application number
EP06117086A
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German (de)
English (en)
Inventor
Paul Dr. Mathias
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1750237A1 publication Critical patent/EP1750237A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/07—Controlling traffic signals
    • G08G1/081—Plural intersections under common control

Definitions

  • the invention relates to a method for communication between adjacent traffic control systems, such as traffic lights at road junctions.
  • the invention further relates to a traffic control system for controlling a traffic flow which exchanges information with adjacent traffic control systems.
  • the coordination of local traffic light control systems in a road network is realized to date via the communication with central control computers (traffic control centers).
  • Data is collected at the light signal controllers and sent to the central computer, where the incoming data of the individual intersections are processed in a central control model.
  • central control model For this purpose (because of the usually existing restrictions of the data connections) almost exclusively prepared, ie statistically condensed data is sent to the central authority.
  • the control information determined in the control computer is finally sent back to the individual traffic signal controls in order to be taken into account in the local control.
  • a disadvantage of such a central control is that the determined control information is based on compressed data and can only take into account the traffic density with a time delay.
  • a method for communication between adjacent traffic control systems each having a short-range communication device.
  • the method includes the steps of communicating control data of a first one of the traffic control systems to a vehicle that is within range of the short-range communication device of the first traffic control system, transmitting the control data previously received from the first traffic control device from the communication device of the vehicle to a second one of Traffic control systems, in the range of which the vehicle has come, and the operation of the second traffic control system depending on the received control data.
  • the method according to the invention is based on the idea of having status and control data of adjacent traffic control systems, for example traffic lights and the like, transported directly by the passing vehicles. This can be advantageously realized in particular if vehicles are equipped with a communication device and the traffic control systems for detecting the vehicles within their range are equipped with a short-range communication device.
  • the method according to the invention it is possible to use already existing devices to provide direct communication between adjacent traffic control systems allow to build without a separate data path between the traffic control systems.
  • At least one of the information, time position of red phases, time position of green phases, timestamp of the current time of entry of the vehicle into the coverage area of the short-range communication device, cycle time, measured traffic values, utilization rates and turn rates can be transmitted as control data to the communication device of the vehicle ,
  • the second traffic control system determines the second traffic control system from the control data, in particular the time stamp, the travel time of the vehicle from the first traffic control system, the second traffic control system is operated depending on the determined travel time.
  • the control data in particular the time stamp
  • the travel time of the vehicle from the first traffic control system
  • the second traffic control system is operated depending on the determined travel time.
  • dynamic green waves can arise through self-organization, which are optimized according to the current traffic load in one or the other direction of the road.
  • additional information for optimizing the local control of the traffic control system can be provided from the travel time determined, since conclusions can be drawn on the tailback periods and thus also on the actual traffic demand of the road route on the basis of standard methods.
  • a traffic control system for controlling a traffic flow.
  • the traffic control system comprises a signaling device for outputting a perceptible signal to a user of a vehicle.
  • the traffic control system further includes a short-range communication device configured to communicate control data to a communication device of the vehicle that is in range of the short-range communication device, and / or to receive control data from the communication device of the vehicle.
  • a control unit is provided, to operate the signaling device depending on the received control data.
  • the traffic control system has a short-range communication device, via which information from adjacent traffic control systems, which are transported by a communication device of a vehicle, can be received, so that a plurality of short-range communication devices can communicate with each other without the need for a central control computer.
  • control unit may be provided to determine from the control data, in particular a time stamp contained therein, the travel time of the vehicle from a further traffic control system and to operate the signaling device depending on the determined travel time.
  • a communication apparatus for a vehicle having receiving means for receiving control data from a short-range communication means of a first traffic control equipment located within the range of the communication equipment, a storage unit for storing the control data, and a transmission means for transmitting the received control data to a short-range communication device of a second traffic control system, within reach of which the vehicle has arrived.
  • FIG. 1 schematically shows a traffic control system 1 which has a first traffic control installation 2 and a second traffic control installation 3.
  • the traffic control systems 2, 3 have a first and a second control device 4, 5, by which a first and second signaling device 6, 7 are controlled.
  • the signaling devices 6, 7 may, as shown, for example, in the form of a traffic light system, or be designed as an electronic billboard and the like.
  • the control devices 4, 5 can autonomously control the respective signaling device 6, 7 according to a control protocol to direct the traffic flow and can be connected to a central control computer (not shown), which provides control information for the connected traffic control systems 2, 3.
  • the signaling devices 6, 7 are provided with first and second short-range communication devices 8, 9, which are also connected to respective control devices.
  • the short-range communication devices 8, 9 are designed to establish a data connection with a vehicle-mounted communication device and to transmit or receive data as soon as the vehicle comes within reach.
  • the range of the short-range communication device is limited, so that only communication devices can be detected in vehicles within a predetermined radius of, for example, 50 to 100 meters.
  • Short-range communication devices 8, 9 are already used today for the traffic volume, for example at a To determine intersection by the number of vehicles (via the communication devices therein) is detected, which are in the range of the corresponding short-range communication device 8, 9.
  • the traffic control systems 2, 3 can exchange data with one another without having to provide an additional data path additionally.
  • a vehicle 10 which has a communication device 11, control data from the first traffic control system 8 are transmitted as soon as the vehicle 10 is within range of the short-range communication device 8.
  • the control data is stored in the communication device 11. If the vehicle 10 arrives on its way into the reception range of the second short-range communication device 9 of the second traffic control system 3, the communication device 11 of the vehicle 10 automatically transmits the stored control data to the second traffic control system 3.
  • the transmission of the control data can be started automatically or only after Prompt be made by the short-range communication device.
  • the received control data are made available to the control device 5 and the control of the traffic control system, in particular of the signaling device 7, is performed depending on the received control data.
  • the second traffic control system 3 can also transmit corresponding self-generated or generated control data to the communication device 11 of the vehicle 10, so that the vehicle, if it comes within the range of another traffic control system, can pass on this data to the further traffic control system.
  • the respective traffic control system As a control data, the respective traffic control system, the temporal position of red phases, the temporal position of green phases, which include cycle time, measured traffic values, utilization level information, and turn rates.
  • the traffic control system which receives the control data can direct the traffic flows in such a way that the traffic flow is as smooth as possible.
  • information about the temporal position of green phases can be synchronized in conjunction with a determinable travel time between the range of the first traffic control system and the second traffic control system of the switching cycle of the traffic control system so that a "green wave" is achieved for vehicles at least one direction of travel. Synchronization is possible, in particular, if the cycle duration of adjacent traffic control systems is substantially the same, so that the green phases are offset from each other in time, in particular by the travel time of the vehicle between the relevant traffic control systems.
  • control devices 4, 5 each have a timer (not shown), wherein the first traffic control system 2 transmits the communication device in the vehicle a time stamp with the current time as part of the control data.
  • the second traffic control system can determine the travel time of the vehicle from this and the current time then present.
  • the short-range communication device may perform, for example, a wireless communication according to a WLAN or a dedicated protocol, or an infrared or other short-range communication type having a limited range.
  • the traffic control system 2 includes, as described with reference to the first traffic control system of Figure 1, a signaling device 6 in the form of a traffic light system, a control device 4 and a Short-range communication device 8.
  • the control device 4 controls the signaling device 6 in accordance with a predetermined control protocol.
  • the short-range communication device 8 comprises an antenna 20 with which signals transmitted by the communication device 11 of a vehicle 10 can be received.
  • the received signals are received in a transmitting / receiving device 21 and buffered in a memory unit 22.
  • the memory unit 22 can be called up by the control device 4 and the control protocol can be adapted according to the control data stored there.
  • the transceiver 21 further information can be received from the vehicles within range of the short-range communication device 8, for example, to detect the number of vehicles in the range of the short-range communication device 8, as well as their directions and speeds and on the Store unit 22 of the controller 4 to provide.
  • the control device 4 can use this information to determine the traffic load in its area and to buffer the traffic load as control data in the memory device 22.
  • the control data thus determined are now sent to a communication device 11 of a vehicle by means of the transceiver 21 via the antenna 20, so that the vehicle transports the control data to a next adjacent traffic control system.
  • control data having identical or nearly identical content is repeatedly transmitted to the communication devices of a plurality of vehicles.
  • FIG. 3 shows a communication device 11 as a block diagram with which a vehicle can be equipped in order to be able to serve as communication means between two adjacent traffic control systems.
  • the communication device 11 has a transmitting-receiving antenna 31, so that control data can be sent from the transmitting-receiving device 32.
  • the control data is at Transport by the vehicle stored in the storage unit 33 and retrieved as needed to send the control data via the transceiver 32 to the in-range short range communication device.
  • vehicle data may be provided in a detection unit 34, which may also be sent to the short-range communication device.
  • the vehicle data may include at least one of the following information: vehicle speed, direction of travel, driver's destination, vehicle identification number, and other information that may be useful to control the traffic control systems.
  • the control data may further include information about the time of entry of the vehicle into the range of the short-range communication device of the corresponding traffic control system, so that the nearest traffic control system can determine therefrom and from the current time the travel time of the vehicle between the respective traffic control systems.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
EP06117086A 2005-07-27 2006-07-13 Installation de commande du traffic et procédé destinés à la communication entre des installations de commande du traffic voisines Withdrawn EP1750237A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510035213 DE102005035213A1 (de) 2005-07-27 2005-07-27 Verkehrssteuerungsanlage und Verfahren zur Kommunikation zwischen benachbarten Verkehrssteuerungsanlagen

Publications (1)

Publication Number Publication Date
EP1750237A1 true EP1750237A1 (fr) 2007-02-07

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EP06117086A Withdrawn EP1750237A1 (fr) 2005-07-27 2006-07-13 Installation de commande du traffic et procédé destinés à la communication entre des installations de commande du traffic voisines

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EP (1) EP1750237A1 (fr)
DE (1) DE102005035213A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008050822A1 (de) 2008-10-08 2010-04-15 Gevas Software Systementwicklung Und Verkehrsinformatik Gmbh Verkehrsadaptive Netzsteuerung und Verfahren zur Optimierung der Steuerungsparameter
DE102010027899A1 (de) * 2010-04-19 2011-10-20 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Systeme

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1288883A1 (fr) * 2001-08-29 2003-03-05 Siemens Aktiengesellschaft Procédé et disposif pour contrôler un système de plusieurs signaux routiers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10142250A1 (de) * 2001-08-29 2003-04-03 Siemens Ag Verfahren und Anordnung zur Steuerung eines Systems von mehreren Verkehrssignalen
US6967592B2 (en) * 2003-04-01 2005-11-22 International Business Machines Corporation Wireless highway guide

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1288883A1 (fr) * 2001-08-29 2003-03-05 Siemens Aktiengesellschaft Procédé et disposif pour contrôler un système de plusieurs signaux routiers

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