EP2261876B1 - Procédé et dispositif de commutation de programmes de signal - Google Patents

Procédé et dispositif de commutation de programmes de signal Download PDF

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Publication number
EP2261876B1
EP2261876B1 EP10152156A EP10152156A EP2261876B1 EP 2261876 B1 EP2261876 B1 EP 2261876B1 EP 10152156 A EP10152156 A EP 10152156A EP 10152156 A EP10152156 A EP 10152156A EP 2261876 B1 EP2261876 B1 EP 2261876B1
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EP
European Patent Office
Prior art keywords
changeover
signal
switching
variant
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.)
Not-in-force
Application number
EP10152156A
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German (de)
English (en)
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EP2261876A1 (fr
Inventor
Alexander Dr. John
Andreas Dr. Poschinger
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Siemens AG
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Siemens AG
Siemens Corp
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Priority to PL10152156T priority Critical patent/PL2261876T3/pl
Publication of EP2261876A1 publication Critical patent/EP2261876A1/fr
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Publication of EP2261876B1 publication Critical patent/EP2261876B1/fr
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    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/07—Controlling traffic signals

Definitions

  • the invention relates to a method for switching signal programs according to the preamble of claim 1 and to an apparatus for carrying out the method according to claim 10.
  • a traffic signal system has signal transmitters for emitting light signals to road users and a control device for switching on the signal transmitters according to a signal program.
  • One or more light signals which always indicate the same signal states, are combined into signal groups.
  • the signal times of the traffic signal system are defined in terms of duration and assignment.
  • the signal program is represented graphically by a signal time plan on a time scale, called a signal plan for short.
  • Different traffic conditions require signal programs with different release time distributions or orbital times and offset times.
  • the change between two signal programs is called switching.
  • the switching must be done at a time at which the transition makes sense in traffic terms, that is, it should be realized with the least possible disruption of the flow of traffic and be achieved with reasonable control engineering effort.
  • the decision to switch from a current signal program to another signal program is made on the basis of preset switching times or on the basis of currently determined measurement data.
  • the layout DE 25 12 912 discloses a method for changing the signal plan in road traffic signal systems, which starts from predetermined switching points with the same signal phase, which may differ greatly from each other due to the different lengths of the individual round trip times. In order to ensure a smooth course of the signal plan change and the road traffic is to be avoided over 10% beyond stretching the signal phase phases with certainty. This is achieved by checking the temporal assignment of the switching points and deriving therefrom an instruction for shortening or lengthening the signal phase in question.
  • the timeline of a signal schedule is shifted at a switching instant abruptly relative to the timeline of the other signal plan, causing at least one of the time axes to be asynchronized prior to switching.
  • the incoming switching request causes the switchover from a signal plan in the next switching point the other. After switching, the switching points synchronize the time axes again.
  • the invention is therefore based on the object to provide a method of the type mentioned, with which can minimize disturbing effects on the flow of traffic in the signal program change at several adjacent nodes.
  • a switching variant is determined by a time-local sequence of switching signal programs for the nodes.
  • the predetermined switching variants are evaluated on the basis of one or more traffic-technical evaluation criteria, with regard to the evaluation traffic-favorable switching variant is executed. Regardless of what the majority of switching variants is given, can be determined by taking into account quantitative and / or qualitative traffic assessment criteria, the cheapest switching variant. If coordinated nodes are involved, the mutual location of the nodal points and a progression speed on a link train connecting the nodal points can be taken into account in the specification of the switchover variants.
  • switchover signal programs with service life are determined for each node, which correspond to the respectively possible mutual positions of the switchover times of the currently switched signal program and the signal program to be switched, wherein switchover variants of temporal-local orders combine switchover signal programs of the node points.
  • the switching signal programs are composed of portions of the respective currently switched signal program and the signal to be newly switched. The ratio of the two components is dependent on the mutual position of the switching times in the considered Umschaltumlauf, whereby the respective life - which can also be zero - is determined.
  • Each of these positions or each of the service lives corresponds to a possible switching signal program.
  • the switching method according to the invention is for traffic engineering evaluation of a Switchover variant determines the extent to which the evaluation criteria or the criteria for the switchover signal programs of the switchover variant deviate or deviate from the signal program to be newly switched.
  • traffic-related evaluation of the switching variants to traffic data determined online by detectors. The entire relevant information about the traffic situation is extracted here from the new signal program to be switched. This is assumed to be optimal for the current and expected traffic situation. It is assumed that the creation of the new signal program to be switched according to certain traffic engineering or planning criteria or rules has been done. These then allow conclusions to be drawn regarding the expected traffic volume and the expected traffic flows at the individual junctions. Therefore, the traffic-technical evaluation of the switching variants on the determination of the respective deviations of the Umschaltsignalprogramme of the newly switched signal programs.
  • the evaluation criteria taken into account are the power capabilities of the relevant signal groups resulting from the transition signal programs of a switching variant.
  • the signal groups With green waves, the signal groups in the main load and their opposite directions are relevant.
  • the green time distribution i. the ratio of green time to round trip time
  • the saturation traffic intensity i. the maximum possible traffic volume in a cross-section of a lane during one hour release time, estimated.
  • the latter is a constant value, which depends only on road construction conditions. The efficiency results from this as a product of the share of the release time in the total circulation and the saturation traffic strength.
  • the left-turning phases of the switching signal programs of a switching variant are taken into account as the evaluation criterion.
  • the offset of the release times of the mentioned signal groups is considered, which has been used for the consideration of left turn in the creation of the signal to be switched signal program.
  • the effective capacities of pulse bands generated by a switching signal program of a switching variant at a node are taken into account as an evaluation criterion.
  • the release time at a considered node creates a burst of force that hits the next node in the direction of progression. It depends on its signaling state, how many vehicles from the incoming pulse band may possibly pass through the node in the next signal circulation. In order to be able to quantify this effect, the temporal overlap of the pulse band with the release time of this node is measured.
  • lead and lag times for the pulse band in the switching signal programs of a switching variant are taken into account as the evaluation criterion.
  • a waiting at a node vehicle queue should be reduced if possible before the arrival of the vehicle body in the direction of progression. This is achieved by possible lead times and lead times to the pulk band and thus included in the evaluation.
  • conditional waiting times and / or numbers of holding are taken into account as the evaluation criterion by the switching signal programs of a switching variant.
  • the traffic assessment is supplemented by a qualitative measure, namely how often a vehicle is forced to stop and / or wait in a vehicle cluster moving toward the signalized node.
  • the evaluation criteria in the switching method according to the invention for the implementation of a predetermined traffic strategic goal, in particular a green wave, a user optimum or a system optimum, weighted.
  • the different weighting of the evaluation criteria makes it possible to set different traffic engineering priorities when choosing the cheapest switchover variant.
  • green waves the focus would be on the signal groups in the direction of progression. But also the lowest possible blocking time for vehicles in the transverse direction can be taken into account.
  • system or user optima can be determined.
  • the maximum deviation of a signal program per round is considered, for example the maximum waiting times per vehicle at all considered nodes. This roughly corresponds to the experience of a driver in the generated pulse band.
  • the object is further achieved by a device for switching signal programs for light-signal-controlled nodes of a road network, wherein at each node a traffic signal with a signal generator and a control device for executing a signal program is arranged, and wherein the control devices and a traffic computer are operatively connected to each other and configured in such a way in that a switching method according to one of Claims 1 to 9 can be carried out.
  • FIG. 1 In the diagrams according to FIG. 1 are to the right a reference or reference time t in seconds and upwards each of the time steps Tx in the signal circulation of a currently switched signal program SP1 (upper diagram) and a newly switched signal program SP2 (in the lower diagram) plotted.
  • the sawtooth patterns illustrate the periodically repeating signal circulations after a circulation time TU1 of 140 seconds in the currently switched signal program SP1 and with a circulation time TU2 of 120 seconds for the signal program SP2 to be newly switched.
  • the most favorable switching time TS2 for the new-switching signal program SP2 80.
  • the period length Tp of this switching operation corresponds to the smallest common multiple of the two round trip times TU1 and TU2 and in the illustrated embodiment is 840 seconds.
  • the number N of switching signal programs at a node is therefore determined from the quotient of the period length Tp of the switching process and the circulation time TU1 of the currently switched signal program SP1.
  • N L switching variants In the case of L nodes in the line segment with common cycle times, there are a total of N L switching variants, each of which is determined by a time-distance diagram according to FIG FIG. 2 can be represented.
  • the finiteness of the number of switching variants makes it possible in accordance with the invention to evaluate the individual switching variants in terms of traffic and to select the most favorable one for execution.
  • each switchover variant L x N contains switchover signal programs to be evaluated. Since the switching can take place at different nodes in different rounds, the entire round trip period Tp of a switching variant is always evaluated.
  • the performance of the relevant signal groups, the consideration of left-turn phases, the effective capacities of the pulse band and the lead times and lead times to the pulse band can be evaluated.
  • These four quantitative evaluation criteria can still be determined by a qualitative evaluation criterion, such as Waiting times or stops, to be supplemented.
  • a qualitative evaluation criterion such as Waiting times or stops, to be supplemented.
  • an attempt is made to record the characteristics of the signal programs relevant to vehicles in the direction of progression. The consideration can be extended analogously to the secondary directions depending on the objective.
  • the switching method according to the invention does not use currently determined traffic detector data. Instead, the following approach is used:
  • the rewritten signal program is known for all nodes and is assumed to be optimal for the current and expected traffic demand. Therefore, it serves as a reference for the evaluation of the most technically favorable switching variant.
  • the characteristic properties of all switching variants are compared with those of the respective new signal plan to be switched. This happens for each switching signal program at each node in each revolution of the switching period Tp. That switching variant with the smallest deviation is considered to be the one best adapted to the traffic situation and selected according to the invention as the most favorable switching variant.
  • the individual rating criteria can be weighted accordingly.
  • the switching method according to the invention provides the traffic-technically most favorable switching variant, which according to FIG. 2 is shown as a time-distance diagram.
  • the switching process was optimized here for a road that connects six nodes K1 to K6.
  • the distance s in meters from a reference point 0 to the nodes K1 to K6 is plotted to the right.
  • t pairs of signal time diagrams are plotted upwards in the direction of increasing time, of which the left one is assigned to the signal groups in the main load direction of the line train and the respectively right signal plan is assigned to the signal groups of the opposite direction.
  • release times are symbolized by an empty bar and blocking times by a solid line.
  • the switchover characterized by the horizontally extending dashed line.
  • the currently switched signal programs SP1 are processed at the nodes Kn, which in the exemplary embodiment FIG. 2 have a circulation time TU1 of 120 seconds; the associated circulation limits are indicated by horizontal, dotted lines.
  • the new signal programs SP2 to be switched have a circulation time TU2 of 120 seconds; their circulation limits are in FIG. 2 drawn by dotted lines.
  • the local switching process can be recognized by the changed width of the pulse band P.
  • the first three nodes K1 to K3 are switched in the fourth round and the last three nodes K4 to K6 in the fifth round of the switching period Tp.
  • the switching variant therefore receives the signature (4, 4, 4, 5, 5, 5).
  • the inverse slope of the The center line of a pulselet P corresponds to the rate of progression Vp with which a vehicle must actually travel in order to be able to pass the coordinated nodes K1 to K6 without stopping.
  • the selection of the switching variant is an essential part.
  • the evaluation part is independent of the provision of the possible switching signal programs.
  • the described evaluation method would still apply; also with an infinite number of switching signal programs generated for example by genetic algorithms.
  • the entire relevant information about the traffic situation is extracted from the signal program to be newly switched.
  • the signal program to be switched is assumed to be optimal for the current and expected traffic situation.
  • the selection of the signal program to be newly switched is not part of the described method. It is assumed that the creation of the new signal program to be switched has been carried out according to certain traffic engineering or planning criteria or rules. These then allow conclusions to be drawn regarding the expected traffic volume and the expected traffic flows at the individual junctions.
  • the evaluation of the switching variants takes place according to the invention via the determination of the respective deviations from the signal program to be newly switched.
  • the signal program change does not take place locally at the earliest possible time.
  • a signal program not adapted to the traffic situation runs until the changeover cycle.
  • the resulting effects on the traffic flow are taken into account in particular by the comparison with the new signal program to be switched.
  • the switching signal program generally has a different signal from the currently switched and re-switching signal program signal image.
  • the pulse band P thus generated hits at a node on a variant-dependent signaling state, e.g. on a blocking time over the entire width of the Pulkbandes.
  • the direct effects of the switching itself are taken into account at a node.
  • the desired optimum results from a compromise between the two evaluations.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Claims (10)

  1. Procédé de commutation de programme de signal pour des noeuds (Kn) commandés par signalisation lumineuse d'un réseau routier,
    - dans lequel pour chaque noeud (kn) on prescrit un programme (SP1) de signal enclenché présentement, un programme (SP2) de signal à enclencher nouvellement et au moins un programme (SPU) de signal de commutation,
    caractérisé
    - en ce que l'on prescrit plusieurs variantes de commutation déterminées par une succession spatio-temporelle de programmes (SPU) de signal de commutation pour les noeuds (Kn),
    - en ce que l'on évalue les variantes de commutation au moyen d'un ou de plusieurs critères d'évaluation en technique de trafic, les écarts respectifs des variantes de commutation étant déterminés par le programme de signalisation à enclencher nouvellement,
    - on choisit la valeur de commutation ayant l'écart le plus petit comme variante de commutation la meilleure,
    - et on exécute la variante de commutation la meilleure en technique de trafic en tenant compte de l'évaluation.
  2. Procédé suivant la revendication 1
    - dans lequel on détermine pour chaque noeud (Kn) des programmes (SPUi) de signal de commutation ayant des temps (ti) hors circulation, qui correspondent aux positions mutuelles respectives possibles des instants (TS1, TS2) de commutation du programme (SP1, SP2) de signal enclenché présentement et du programme (SP2) du signal à enclencher nouvellement,
    - et dans lequel on forme comme variante de commutation à des successions spatio-temporelles des noeuds (Kn) des programmes (SPUi) de signal de commutation combinés.
  3. Procédé suivant la revendication 1 ou 2,
    - dans lequel on détermine pour l'évaluation en technique de trafic d'une variante de commutation dans quelle mesure le ou les critères d'évaluation pour les programmes (SPUi) de signal de commutation de variante de commutation s'écartent ou s'écartent du programme (SP2) de signal à enclencher nouvellement.
  4. Procédé suivant l'une des revendications 1 à 3,
    - dans lequel on prend en considération comme critère d'évaluation les capacités des groupes de signal pertinents, provenant des programmes (SPUi) de signal de commutation d'une variante de commutation.
  5. Procédé suivant l'une des revendications 1 à 4,
    - dans lequel on prend en considération comme critère d'évaluation les phases de tourner à gauche des programmes (SPUi) de signal de commutation d'une variante de commutation.
  6. Procédé suivant l'une des revendications 1 à 5,
    - dans lequel on prend en considération comme critère d'évaluation les capacités effectives de files (P) d'accumulation produites en un noeud (Kn) par un programme (SPUi) de signal de commutation d'une variante de commutation.
  7. Procédé suivant l'une des revendications 1 à 6,
    - dans lequel on prend en considération comme critère d'évaluation des temps avant et après la file (P) d'accumulation dans les programmes (SPUi) de signal de commutation.
  8. Procédé suivant l'une des revendications 1 à 7,
    - dans lequel on prend en considération comme critère d'évaluation des temps d'attente et/ou des nombres d'arrêt provoqués par le signal de commutation (SPUi) d'une variante de commutation.
  9. Procédé suivant l'une des revendications 1 à 8,
    - dans lequel on pondère les critères d'évaluation pour atteindre un but prescrit de stratégie de circulation, notamment un passage tout au vert, un optimum d'utilisateur ou un optimum de système.
  10. Dispositif de commutation de programmes de signal pour les noeuds (Kn) commandés par un signal lumineux d'un réseau routier,
    - dans lequel en chaque noeud (Kn) est disposé une installation de signalisation lumineuse, ayant des indicateurs de signal et un appareil de commande pour la réalisation d'un programme (SP) de signal,
    - dans lequel les appareils de commande et un ordinateur de circulation coopèrent entre eux et sont constitués de manière à pouvoir réaliser un procédé de commutation suivant l'une des revendications 1 à 9.
EP10152156A 2009-05-27 2010-01-29 Procédé et dispositif de commutation de programmes de signal Not-in-force EP2261876B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10152156T PL2261876T3 (pl) 2009-05-27 2010-01-29 Sposób i urządzenie do przełączania programów sygnalizacji

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009022833A DE102009022833A1 (de) 2009-05-27 2009-05-27 Verfahren und Vorrichtung zum Umschalten von Signalprogrammen

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EP2261876A1 EP2261876A1 (fr) 2010-12-15
EP2261876B1 true EP2261876B1 (fr) 2012-05-09

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AT (1) ATE557380T1 (fr)
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PL (1) PL2261876T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011004841A1 (de) * 2011-02-28 2012-08-30 Siemens Aktiengesellschaft Verfahren und Lichtsignalanlagen-Steuerungssystem zur Steuerung von Lichtsignalanlagen
DE102011005495A1 (de) * 2011-03-14 2012-09-20 Siemens Aktiengesellschaft Verfahren und Steuerungssystem zur Verkehrsflusssteuerung
US9189957B2 (en) * 2013-08-30 2015-11-17 Siemens Industry, Inc. Single cycle offset adjustment for traffic signal controllers using a threshold percentage of the cycle length
CN109285361B (zh) * 2018-11-19 2020-12-08 江苏航天大为科技股份有限公司 针对交通干线协调控制方向改变的方案过渡方法

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Publication number Priority date Publication date Assignee Title
US5257194A (en) 1991-04-30 1993-10-26 Mitsubishi Corporation Highway traffic signal local controller
JP2003016581A (ja) * 2001-07-02 2003-01-17 Mitsubishi Heavy Ind Ltd 自律分散型信号制御システム、及びその拡張方法
DE10146398A1 (de) * 2001-09-20 2003-04-17 Siemens Ag System zum Steuern von Lichtsignalgebern an Kreuzungen
DE10208381B4 (de) * 2002-02-27 2005-04-28 Siemens Ag Verfahren zum Steuern einer Lichtsignalanlage
DE102005041067A1 (de) * 2005-08-30 2007-03-01 Siemens Ag Verfahren und Vorrichtung zur Steuerung von Lichtsignalanlagen für den Aufbau einer grünen Welle

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PL2261876T3 (pl) 2012-10-31
ATE557380T1 (de) 2012-05-15
DE102009022833A1 (de) 2010-12-09
EP2261876A1 (fr) 2010-12-15

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