EP3084746A1 - Verfahren zur steuerung einer lichtsignalanlage und lichtsignalanlagen-steuerungssystem - Google Patents
Verfahren zur steuerung einer lichtsignalanlage und lichtsignalanlagen-steuerungssystemInfo
- Publication number
- EP3084746A1 EP3084746A1 EP15710754.1A EP15710754A EP3084746A1 EP 3084746 A1 EP3084746 A1 EP 3084746A1 EP 15710754 A EP15710754 A EP 15710754A EP 3084746 A1 EP3084746 A1 EP 3084746A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- time
- traffic
- determined
- time interval
- 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
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/096—Arrangements for giving variable traffic instructions provided with indicators in which a mark progresses showing the time elapsed, e.g. of green phase
Definitions
- the invention relates to a method for controlling a traffic signal system.
- the invention further relates to a light ⁇ signal system control system for controlling a traffic signal system.
- the invention further relates to a computer program.
- the published patent application DE 10 2011 004 841 A1 shows a method and a traffic signal system control system for controlling traffic light systems.
- the patent DE 10 2012 110 099 B3 shows a Predicti ⁇ onsech a traffic signal system for traffic control.
- a real traffic signal system provided. This is simu ⁇ lines to predict these simulated light signal system in Zeitraf- fer by means of the prediction residual times for signals. These predicted remaining times thus correspond to the remaining times of signals of the simulated traffic signal system, not the real traffic light system.
- the real light ⁇ signal system runs independent of the simulated traffic signal. This means, in particular, that the remaining times of the simulated traffic signal system are not used for controlling the real traffic light system.
- the patent DE 10 2010 052 702 B4 shows a method for controlling a traffic signal system and an associated
- the current traffic status is detected by receiving traffic data transmitted by vehicles.
- the traffic condition is processed.
- the current state of the traffic signal system is processed by a control device.
- optimal switching times of the traffic signal system are detected and transmitted which are received by traffic light phase assistants of the vehicles.
- the emitted switching times are primarily at the next switching time or the remaining time of the current traffic light phase.
- the remaining time of the current traffic light phase is calculated.
- phases are to be understood as meaning phases in the sense of the guidelines for traffic signal systems (RiLSA) or red and green times of signals. In the case of phases in the sense of the RiLSA only remaining times for signals can be safely precalculated, which are switched to green in the current phase and are switched to red in the next phase, since only the remaining time of the current phase is meant.
- the algorithm does not allow predefined rotation period, since each signal having a duration corresponding to the measured traffic and the previous red time of the signal is switched on green, and the duration of the red time of the signal as ⁇ in turn depends on the green times of the other signals, at least the enemy.
- no method is described which allows the calculation of reliable residual times for red and green, so that for each signal at any time a reliable residual time can be determined, at least not if the orbital period must be defined.
- a fixed cycle time for several nodes is at least necessary if a green shaft circuit is desired.
- a fixed circulation period is necessary for efficiency reasons when nodes are in the immediate vicinity, for example with a distance of the hal ⁇ telinien of 200m or less.
- the object on which the invention is based can be seen in the provision of a method for controlling a traffic signal system.
- the object underlying the invention may further be seen to provide a traffic signal control system for controlling a traffic signal system.
- the signal group is controlled in the second time interval based on the signal held unchanged times so that the signal group output, in the second time Inter ⁇ vall the signal times kept unchanged corresponding signals,
- said predetermined time is determined such that, for currently running signal images of the traffic signal the determined for each future time remaining ⁇ times remain unchanged and that the next switching ⁇ time a signal later than is present at the time of take precedence before ⁇ switching time.
- a traffic signal control system for controlling a traffic signal system, comprising:
- a traffic data processing unit for determining traffic signal control data, - a data transfer interface for transferring the light signal installations ⁇ control data to a Lichtsignalanlagen- control unit, wherein
- the traffic data processing unit is adapted to determine in a first time interval of the traffic signal system based on measured traffic data signal times of a signal group of the traffic signal for a first time interval temporally following second time interval, wherein
- the traffic data processing unit is adapted to keep the determined signal times unchanged from a predetermined time, so that the signal group in the second time interval can be controlled based on the signal times kept unchanged, so that the signal group in the second time interval corresponding to the signal times kept unchanged Can output signals,
- the traffic data processing unit is designed to determine remaining times for the signal images of the signals from the signal times if they are switched in the second circulation time
- a computer program which comprises program code for performing the method for controlling a traffic signal, when the computer program Com ⁇ on a computer, in particular a traffic data-processing unit is carried out.
- Signal images can be, for example, red, green, yellow, red-yellow or signal aspects for public transport or other signal aspects, for example acoustic signal aspects for road users with limitations in the area of hearing.
- cycle time or “circulation” (to be circulated and orbital period synonymously used)
- time interval time interval
- Control of the signal group or groups of signal means in particular that the respective signals of the signal groups are ge ⁇ controls.
- the invention includes in particular to determine signal times a signal group of the traffic signal for ei ⁇ ne future orbital period and not to change this future signal ⁇ times after the determination, but to keep unchanged the idea.
- These determined signal times can thus be used from the time at which they are no longer changed, as a reliable basis for further calculations, in particular for remaining times of a signal.
- the signal times are used to determine the signal times that have been measured (for example, still in the first round trip time and / or time before the beginning of the Ermitteins, for example, in a first roundtrip temporally ahead further round trip time), the signal times at least to a traffic situation adapted during the measurement of traffic or traffic flows.
- the Signal times are not already predetermined in advance according to a static or fixed signal schedule. Rather, the signal times may advantageously during a duration of the light signal system, that is, during an operation of the light signal system, be adapted to the specific circumstances of this traffic Situational ⁇ tion or an estimated or predicted future traffic conditions.
- the rest periods can not be estimated but can be calculated and will charge the signal times depending on traffic up to a latest date to be adjusted to the Ver ⁇ traffic volume.
- the determined or calculated remaining times of the signals can be made available to a road user in one embodiment.
- the determined or calculated remaining times can be displayed, this in particular by means of a remaining time display device, which may have, for example, a screen.
- a remaining time signal transmitters (or more remaining time signal transmitters) is provided which is adapted to display a remaining time ei ⁇ nes signal of a signal group.
- a data link between the traffic signal-Steue ⁇ approximation unit and the rest of the time signal generator is (or at more remaining time signal transmitters multiple data connections) are provided which transmits corresponding control data for controlling the rest time ⁇ signal generator to the latter.
- This control data is preferably determined by the traffic signal control ⁇ unit.
- traffic data in the sense of the present invention describe in particular a traffic situation and / or a traffic ⁇ demand.
- Traffic data in the sense of the present invention can be implemented, for example, by means of a traffic monitoring system. direction or determined.
- a traffic monitoring device may comprise, for example, one or more sensors for traffic monitoring. These sensors can, for example, part of a detector insbesonde- re a tax detector and / or a Garliniendetek ⁇ tors be.
- detectors are usually arranged on a road or at an intersection or on a stop line and detect there vehicles which are at these locations before ⁇ and / or hold.
- the traffic data thus include in particular traffic flows in the direction of an intersection or a node.
- a node in the sense of the present invention is defined as an area in the traffic on which hostile traffic flows meet, in particular intersect and / or exit. Examples of such nodes are intersections, pedestrian crossings or junctions.
- This is referred to as a signalized node when one or more traffic streams are controlled at this node by a signaling system, in particular a traffic signal system.
- the term light signal is not limited to light signals, but it is also possible that the light signals are supplemented by other signals such as acoustic signals. Therefore, they are also named after ⁇ standing as a signal generator.
- acoustic and optical Signa ⁇ le are often used in combination, for example, to facilitate the use of visually impaired people and / or to achieve by a double signaling increased attention among road users.
- the method according to the invention can thus be a method for controlling traffic light systems at one or more signaled nodes in a control range.
- the traffic signal control system according to the invention can assurance system thus a traffic signal-Steu réellessys ⁇ system for traffic control at one or more nodes signaled in a control range to be.
- a control range in the sense of the present invention usually comprises more than one signaled node and generally serves to control the traffic flows at two or more nodes consecutive in the traffic flow. In particular, the control ranges serve to increase a traffic flow in this.
- a "green-wave circuit" is then spoken of, which basically represents an optimal case of traffic control.
- a prerequisite of the green wave is the combined cycle time of all involved nodes.
- a signal group in the sense of the present invention in particular a group of light signals is referred to, each having identical signaling.
- signalers are mounted on the lanes, each with a signal generator on the road with a side signal generator represents a group of signals.
- Generalizing is always talking about Signalgrup ⁇ pen, even if there is only one signal generator.
- Lane groups in the context of the present invention are groups of lanes having a homogeneous signaling, that is each lane is controlled by the same signal groups. Non-signaled lanes of a node access can also be combined into lane groups to which no signal is assigned.
- Signal groups can also be assigned as a plurality of lane groups, in particular as main signal groups.
- a main signal group of a lane group can also be set to ⁇ signal assigned so that the FahrstMailgrup ⁇ pen then not but differ in the master signal set by the auxiliary signal group.
- a Knotenzufahrt have three lanes, two of which are straight and one to the right. The two driving ⁇ stripes straight is assigned a dreifeldiges main signal with full ⁇ discs, the right-turn hazard stripes the same Three panel main signal and additionally a doubt ended to ⁇ rate signal withnceabbiegepfeilen. This results in two lane groups.
- the first consisting of two Fahrstrei ⁇ fen straight ahead, where only the main signal is assigned.
- the driving ⁇ stripe groups are not explicitly defined in German literature, but rather in "Highway capacity manual” that defines, among other things, the light signal planning and care in the US.
- the choice for at least one of the circulation times, in particular for all circulation times, of the traffic signal system is based on the critical signal group, ie the signal group in a control range which has the highest utilization rate.
- traffic data for the second round trip time is predicted, wherein the determination of the signal times is carried out as a function of the predicted traffic data.
- the measured traffic data thus serve in particular as the basis for a prediction of traffic data of the second round trip time.
- determining the signal periods is performed depending on the forecasted traffic data according to one embodiment, can be provided that traffic data for the second round trip time are predicted, the prog ⁇ nosti disposeen traffic data and actual traffic data of the second round trip time are compared with each other, signal times the Signal group for at least one further circulating be determined time dependent on the comparison, which is temporally after the second round trip time.
- the traffic data is aggregated over an aggregation interval.
- the aggregation interval may also be referred to as a round-trip time-related interval or a round-trip time-related aggregation interval.
- the aggregation interval corresponds to a circulation time, in particular a circulation time which is temporally ahead of the first circulation time, in particular immediately ahead of time.
- the traffic data are preferably aggregated at a umlaufbezo ⁇ genes aggregation interval, that is beispiels- example, that during a revolution a detector überfah ⁇ - generating vehicles are counted to avoid that the aggregation of different enable and disable periods of a signal group is affected.
- a release time of 40 seconds completely in a first He ⁇ replaced interval falling during a second detection Inter ⁇ vall only a blocking time of this signal group contains then xx- the measured traffic demand in the first interval re interpreting ⁇ Lich greater than in the second interval when the detector is a request or measurement detector, because the vehicles are prevented in the second interval because of the locked signal group thereto, to run over the detector.
- the aggregation interval in duration again preferably corresponds to a time ⁇ interval a circulation, wherein the Be ⁇ beginning of the aggregation interval is not identical with the start of the environmental run of the control system, but the manner of a rolling horizon is shifted by one phase of the traffic signal system.
- the aggregation interval also in the manner of a rolling
- Horizons by a certain period of time for example, 5s, in particular 4s, preferably 3s, in particular 2s, for example, ls, offset evaluated is as fast as possible (albeit delayed) to be able to respond to a change in traffic.
- the above-genann ⁇ te certain time duration can in particular have a duration of less than one of the aforementioned time information.
- time-related circumferential intervals for aggregating data traffic of the first roundtrip time depending on a parameter
- time forward which is an element selected from the following group of parameters: aggregation computation time, computation time for the control data, in particular the switching times and remaining times, transmission time of traffic signal control data from one data transfer interface to one
- Traffic signal control unit reaction time of a traffic signal control unit in response to empfan ⁇ gene traffic signal control data or any combination thereof.
- a computing time refers to the time required for aggregating the traffic data and calculating the adaptive signal times.
- this time interval can be selected depending on the transmission time of traffic signal control data from a data transfer interface to a traffic signal Steue ⁇ tion unit.
- the time taken for the transmission of traffic signal control data from the data transfer interface to the traffic signal control unit is taken into account.
- Wei ⁇ direct can be selected, the time interval depending on the reaction time ⁇ the traffic signal control unit in response to received light signal conditioner control data. It can thus be advantageously avoided that there are temporal overlaps between the cycle-related intervals and the circulation times.
- the traffic signal system has a defined or predetermined circulation time.
- the round trip time is a variable (that is adjustable, can change during the operation of the light signaling system ⁇ ) round trip time or a fixed (or predetermined fixed, does not change during operation) round trip time. In Be ⁇ operation of the traffic signal system both variable and fixed cycle times can be provided.
- a duration of the periods during a Be ⁇ drive of the signal conditioning is determined depending on traffic data.
- the round trip times are not rigidly predetermined or fixed, but can be adapted to a specific present traffic situation or to a prognostic ⁇ ed traffic situation rather.
- a time duration of the circulation times during operation of the signal system is determined in phases.
- a phase in the sense of the present invention is a specific signaling state of a specific node, which is defined by released signal groups.
- phase-by-phase shifting of the calculation intervals allows, on the one hand, further circulation-related traffic data and This can be reacted to fluctuations in traffic already after each phase.
- the advantage of the abovementioned embodiments is that changes in demand (in particular changes in traffic situations)
- the temporal beginning and the end of the aggregation intervals are determined individually for each signal group of the traffic signal based on a green-time start for the corresponding Sig ⁇ nalirriate. As a result, beat effects in a traffic demand can be avoided in an advantageous manner.
- At least slight beat effects can occur when the free ⁇ watch time of the signal group to shift between two circulation streams, so that, for example, 4/3 of the average release ⁇ time of a signal group is located in a first interval and 2 / 3 in a second, due to the fact that not only the release period of the signal group can change between two rounds, but also the beginning of the release due to the fact that the signal times of the signal ⁇ groups change in the preceding phases.
- At least one request phase is provided in at least one of the circulation times, in which as long as no remaining time of a signal is determined until a phase is requested.
- the capacity of the other phases can be increased if the time required for the failing phase can be distributed to the other phases, whereby not only the phase duration is available but also the duration of the phase transition saved.
- a number of revolution times between the first round trip time and the second round trip time as a function of a location ei ⁇ nes traffic detector agrees loading relative to the light signal system.
- a residual time of at least one of the signals which are kept unchanged is kept.
- a calculation or a determination for at least one phase or a circulation time is determined in advance, for example, a remaining time or a remaining time of a currently or currently released signal (or several currently or currently enabled signals) (alternatively or additionally from a current or present red signal or from multiple current or present red signals).
- the calculation or the reminder takes place at least for the respectively next round or the respectively next phase in advance, by the remaining time or the remaining time of the signals which are not yet released (or signal, for example a red signal) to be able to Kings ⁇ NEN.
- Local here means in particular that the Lichtsig ⁇ nalstrom a separate traffic data processing unit is ordered to ⁇ , which is intended exclusively for the processing of traffic data for this traffic signal system.
- the calculations may be carried out on a central server.
- a sol rather central server may particularly for multiple Lichtsig ⁇ nalanlagen process corresponding traffic data and form corresponding traffic signal control data for each traffic signal or detect and send to the appropriate traffic signal control units of the individual traffic signals.
- Light system comprises a plurality of signal groups, determined for the ent ⁇ speaking analog signal respective times and are kept unchanged.
- the control of the signal group according to the dual ring concept takes place and switching times depending on limits (also called “barriers”) as ⁇ as dependent on signal groups are adapted.
- the dual ring control method (or concept) is used in the United States, Australia, and much of Asia and will be further exemplified as follows with reference to FIG. Shown are 4 intersecting roads 509, 511, 513, and 515. Roads 511 and 515 correspond to one main road. Street ("Major Street”). Streets 509 and 513 correspond to a minor street ("Minor Street”).
- the orbital period is divided into two parts, which are separated by two boundaries (barrier) 501 and 503.
- the signal groups (numbered 1 to 8 in FIG. 5 and also partly marked with the Greek capital letter Phi ".phi.”), Designated in the American "phase” and equated with the lane groups, are written on two rings 505 and 507 in FIG Arranged sense of their green color ⁇ tion, which are processed analogous to old electromechanical controls.
- the reference numeral 508 points to an exemplary representation of an equivalent dual ring structure. "Flow ratios" are shown in parentheses, and the signal group arranged on a ring then has green if the "sliding contact", ie the instantaneous one Time in circulation is within this signal group assignment.
- Up to two signal groups can be created for each ring on each of the two subregions of the circuit, so that each subarea has four signal groups 1, 2, 5, and 6 as shown on the left.
- the signal groups within a subarea are arranged so that the compatible signal groups ei ⁇ ner signal group are each arranged on the other ring, while hostile on the same ring.
- the signal group which strikes one of the two boundaries (barrier) 501 and 503 must end with the barrier, the time of the
- the Barrier can be determined adaptively as the switching time of the subregions. If two signal groups are located on a ring within a subarea, the time of switching between the two signal groups can be changed without regard to other switching times as long as signal minimum times and split times are maintained. Accordingly, the switching time as shown in FIG. 5 may be different between the signal groups 2 and 1 than between 5 and 6.
- FIG. 1 shows a flowchart of a method for controlling a traffic signal system
- a step 101 the measured traffic data are aggregated in a first round trip time and signal times of a signal group of the traffic signal for one of the first Um ⁇ run time temporally following second round trip time determined at the beginning of an intermediate third roundtrip before the arrival of the latest time.
- the determined signal times are kept unchanged after the determination.
- the signal ⁇ group is controlled in the second round trip time based on the unverän ⁇ changed held signal times, so that the signal group output corresponding signals in the second round trip time of the signal times kept unchanged.
- the traffic signal control system 201 comprises a data transmission interface 203 for accepting traffic data. These traffic data may be in particular determined by means of a traffic monitor or recorded and the data transfer interface 203 überge ⁇ ben.
- the traffic signal control system 201 further includes a traffic data processing unit 205 for detecting traffic signal control data.
- the traffic signal system control system 201 comprises a data transfer interface 207 for transferring the light signal ⁇ system control data to a (not shown) light signal ⁇ system control unit.
- the traffic signal system control system 201 comprises the traffic signal control unit.
- the traffic data processing unit 205 is configured to determine, based on measured traffic data, signal times of a signal group of the traffic signal system for a second time period following the first time period in a first round trip time of the traffic signal system, wherein
- the traffic data processing unit 205 is formed
- the traffic data processing unit 205 is configured to determine traffic signal control data based on the unchanged signal times, so that the traffic signal control unit controls the signal group in the second revolution time based on the determined
- FIG. 3 shows a signal timing diagram 301 of a Lichtsignalanla ⁇ ge with signal groups SGI, SG2, SG3, SG4 and SG5.
- the traffic signal system is located at a node.
- the node is thus a signalized node.
- symbolic delineations of traffic patterns of five detectors Det 1, Det 2, Det 3, Det 4 and Det 5 are shown as lines 302 with different lengths, wherein the bars 302 mark the time period that the detector was occupied by a vehicle.
- the occupancy time of an occupancy depends on the speed of the vehicle and its length.
- the detectors may be, for example, design detectors, requirement detectors or strategic detectors.
- Demand detectors are immediately before the stop line and can not be run over when the signal is locked.
- Rated detectors are located at a distance of approx. 3 sec travel time, ie in the range of approx. 40m-60m before the stop line and can only be passed over to a limited extent when the signal is blocked, and only until the queue before the blocked signal reaches the detector goes back.
- Strate ⁇ cal detectors are so far ahead of the stop line of the Sig ⁇ Nalles that the crossing of the detector by blocking Is not prevented signal as long as the node is not congested on ⁇ (overstowed) is. This means, in particular, that the detectors can be arranged on the roads leading to the node and on the node itself.
- three circulating times 303, 305 and 307 are shown by way of example. In one embodiment, not shown, more than three circulation times may be provided.
- the solid bold line 309 indicates a red signal.
- the double line with reference numeral 313 a Grünsig ⁇ nal, reference numeral 311 with the diagonal line characterizes a yellow signal, and reference numeral 310 with bold line and a diagonal line Rotgelbsignal.
- the individual signal times of the periods 303, 305, 307 of the signal timetable 301 can be determined depending on the scaffoldda ⁇ th, which were determined by means of the five detectors or formed. As long as all signal times are always determined as a function of the traffic data, it is generally not possible to display a residual time for individual signals. For if, for example, a remaining time is to be displayed at a time 317 between the yellow phase and the red phase in the circulation time 303, this may not subsequently change, for example shorten or lengthen.
- the signal times of the signal groups in the round trip time 307 are thus known in advance.
- 305 and 307 basie ⁇ rend determined on the held signal times rest times for the individual signals of the signal groups, or be calculated for the cycle times. For example, at the beginning of a green phase of the signal group SGI in the round trip time 305 the corresponding
- the beginning of this green phase is indicated by the reference numeral 319. So that means the ⁇ special is that the orbital period 307, the signal times are fixed and known. These will not change during the circulation period.
- the round trip time 307 may thus be referred to as the second round trip time.
- the round trip time 303 may thus be referred to as the first round trip time.
- the traffic data which are used at the beginning of the third round trip time 305 or at the end of the first round trip time 303 to determine the signal times can preferably be determined in the first round trip time 303.
- the beginning of a red phase in the circulation time 305 is indicated by reference numeral 321.
- the latest time is before this beginning 321 of this red phase, so that a residual time for this red signal can be determined and displayed.
- the traffic data which are determined during measurement in the second round trip time 307, are compared with the predicted traffic data, which was calculated or determined in the first round trip time 303 for the second round trip time 307, by the corresponding ones Signal times for the second round trip time 307 to determine. Should differences arise here? give, so these are taken into account for a determination or determination of signal times of other orbital periods, which are temporally after the second round trip time 307. In one embodiment, not shown, it may be provided that more than one circulation time lie between the first circulation time 303 and the second circulation time 307.
- FIG 4 also shows a signal diagram 301 for the light signal conditioning ⁇ the signaled node 401.
- the signal diagram 301 overall measure FIG 4 is formed substantially similar to the signal diagram 301 of FIG. 3 Reference may be made to the corresponding explanations.
- the reference numeral 411 still points to a phase characteristic. For clarity, the individual signal times for the round trip times 305 and 307 are not shown.
- the reference numeral 415 points to a calculation interval in which signal times for the round trip time 307 are determined.
- the calculation interval 415 is located in the round trip time 305.
- the signal times for the roundtrip time 307 that is sym ⁇ bolisch the arrow with reference numeral 417 on
- This is based on traffic data that has been determined in the orbit period 303. After determining the signal times, these are no longer changed, ie kept unchanged.
- the signal groups are thus controlled in accordance with the signal times shown unchanged. This is in a control interval 419, which corresponds to the circulation time 307 ent ⁇ .
- the reference numeral 421 shows an aggregation interval shifted by one phase.
- the calculation takes place in the also shifted by a phase calculation interval 423, in which signal times are determined for a likewise shifted orbital period 419a, which are not changed for the duration of one phase, so that the signal groups are controlled according to the signal times kept unchanged and in the Periods 417 and 423, the remaining times of the signals can be calculated.
- changes in the traffic flow can be determined after each phase and signal times for the period after the expiration of the duration of a cycle can be calculated.
- the signal times after the calculation are kept unchanged only insofar as they are already used for the calculation of remaining times. In the case of usual phase sequences, this is the period of the first phase of the period which begins one revolution after the end of the aggregation interval, that is to say in FIG. 4 the first phase of the interval 419 a.
- the reference numeral 425 points to a by a certain time ⁇ duration, here 1 s, shifted aggregation interval.
- the reference numeral 427 shows, similarly to the reference numerals 415 and 423 to a calculation interval, in which signal times calculated for the interval 419b, so that the Cnt ⁇ th of the signal groups can be calculated in the time regions 417 and 427th
- the signal times are recalculated after every second, each time for a period of time after the duration of one revolution after the calculation starts, whereby only such signal times are changed, which are not yet used to the time remaining display or for other appli ⁇ applications.
- Reference numeral 429 shows an example of an aggregation onsintervall, which was preferred to a temporally succeeding control interval 431 in time by a specific time duration 433, in particular a computing time that Benö ⁇ is Untitled for, based on the aggregated traffic data, the corresponding traffic signal control data determine.
- the traffic signal control data according to the time 433 are used to control the traffic signal system in one
- Control interval 435 which immediately follows the control ⁇ interval 431. That is to say that the Aggregationsin ⁇ interval and the control interval are each offset by a vorgege- bene time duration, the aggregation interval is preferred according to the temporal duration. This time duration depends, in particular, on the computing time and / or on a parameter as already explained above, for example: aggregation time, transmission time of traffic signal control data from a data transfer interface 207 to a traffic signal control unit, reaction time of a traffic light system. Control unit in response to received Lichtsignalanla ⁇ gene control data or any combination thereof.
- the latest time is determined per revolution time, from which the switching times of the subsequent ⁇ orbit may not be changed. This is the earliest time a signal will be switched and will not be switched in the remainder of the cycle (green ends of signal 1 and 2 in circuit 303).
- a number of transit times (303, 305, 307) are inserted between the first round trip time and the second round trip time to further set the signal times in the future, for example, emergency vehicles, public transit vehicles, and in ⁇ individual road users in the context of a green wave.
- the invention thus relates to collectively particularly to a method for controlling light signal groups in the signal times using traffic data is calculated and this data signal to a time later than ⁇ be calculated and then no longer be changed. From the be ⁇ knew the art of estimating signal times and rest periods, the invention differs especially as ⁇ by that signal times not estimated but are calculated net.
- the invention differs from the known state of the art in the indication of remaining times in that the signal times during the operation of the traffic signal system are adaptively determined on the basis of the traffic data.
- One embodiment comprises a display and / or an Ver ⁇ application of remaining times the signaled signal images by the traffic data are aggregated in one round and in a first round trip signal times for a second round (round trip time) are calculated, the time after the first round, in particular immediately after a third circulation following the first circulation.
- the calculation and transmission takes place, for example, in each case in the time of the phase transition when the circulation (circulation time) starts with the phase transition into the first phase of the phase sequence. If the circulation is defined differently, for example, another embodiment given below may be used.
- a further embodiment for displaying and / or using the remaining signal image times identifies circulation-like intervals in the manner of a rolling horizon, by terminating after each phase a first interval shifted by the duration of the phase, and from the traffic data aggregated for this interval, the signal times of a second interval calculated immediately following a third interval between the first and second intervals.
- the intervals thus defined have the length of one revolution, but are shifted to this.
- the advantage of this procedure is that after each phase on a change in traffic demand can be reacted, the signal times calculated from it are used at the earliest in the second interval. After each phase, the phase transition occurs; During this time, the calculations and the transmission of the signal times can take place. In the event that the durations of the phase transition are insufficient, another embodiment described below is used.
- This further embodiment for displaying and using the signal image remaining times also used this approach of the intervals, but which are often calculated at the In ⁇ play every second instead of only after each phase.
- the advantage of this embodiment is that also signals that can be considered only on request and not in each round can be taken into account if the remaining times for the unreleased signal (red) are only displayed if the signal is requested. The every second processing ensures that can be quickly calculates a remaining time and displayed after Anforde ⁇ tion.
- a further embodiment of the method allows the coor ⁇ ordination of vehicles, for example as part of a green wave, as part of a prioritization of the public local transport (bus, tram) for emergency vehicles such as ambulance, fire ⁇ military, police and VIP.
- the signal times must be calculated further ahead or less in advance, depending on the particular planning and the location where the vehicles log in to calculate the signal times.
- the Sig- must nalicide at least as far in advance calculated the ⁇ that the vehicles, the information can be given on their application whether and at what speed they get released.
- the first interval whose traffic data is aggregated is advanced so far that aggregation of the traffic data and calculation of the signal times can be performed in the acquired time, the signals can be transmitted to the signal processing and signaled in good time. This prevents signal times from being able to be implemented on time due to system-related computation times.
- the traffic demands for the second interval are predicted from the traffic data collected up to the end of the first interval. The advantage of this is that, for example, it is possible to respond more quickly to increases in demand if the demand trend is used for extrapolation.
- the traffic demands (traffic data) measured during the second interval are compared with the predicted traffic demands (traffic data) and then at the end of this second interval, which is now the first interval of traffic data aggregation and signal time calculation, the signal times for the next second interval to calculate and to incorporate of prognosis in the calculation of the difference, in particular in that the signal times be additionally increased by the amount that is required by the difference of Progno ⁇ se and measurement of the traffic demand to use, if the measured traffic demand was higher than the measured and because of too short signal times in the past interval is to be expected that not the entire traffic demand has been served with free ⁇ ting time.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15710754T PL3084746T3 (pl) | 2014-03-24 | 2015-03-12 | Sposób sterowania urządzeniem sygnalizacji świetlnej oraz system sterowania urządzeniem sygnalizacji świetlnej |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014205419 | 2014-03-24 | ||
| PCT/EP2015/055219 WO2015144445A1 (de) | 2014-03-24 | 2015-03-12 | Verfahren zur steuerung einer lichtsignalanlage und lichtsignalanlagen-steuerungssystem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3084746A1 true EP3084746A1 (de) | 2016-10-26 |
| EP3084746B1 EP3084746B1 (de) | 2020-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15710754.1A Active EP3084746B1 (de) | 2014-03-24 | 2015-03-12 | Verfahren zur steuerung einer lichtsignalanlage und lichtsignalanlagen-steuerungssystem |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3084746B1 (de) |
| PL (1) | PL3084746T3 (de) |
| WO (1) | WO2015144445A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015218942A1 (de) * | 2015-09-30 | 2017-03-30 | Siemens Aktiengesellschaft | Verfahren zum Steuern einer Anzeige einer Restzeit |
| CN108133604A (zh) * | 2018-02-06 | 2018-06-08 | 电子科技大学 | 一种基于流量特征的红绿灯动态实时调度方法 |
| CN117012056A (zh) * | 2023-07-21 | 2023-11-07 | 长安大学 | A-smgcs控制下机场场面交通信号配时方法、系统、设备及介质 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3399421B2 (ja) * | 1999-11-05 | 2003-04-21 | 住友電気工業株式会社 | 交通信号制御装置 |
| US6268805B1 (en) * | 1999-12-01 | 2001-07-31 | Damon Undrell Simon | Traffic light |
| CA2472514A1 (en) * | 2004-06-25 | 2005-12-25 | Persio Walter Bortollot | Traffic light with timer information |
| CN100504956C (zh) * | 2007-03-28 | 2009-06-24 | 无锡安邦电气有限公司 | 一种交通信号灯倒计时显示的控制方法 |
| US20100259419A1 (en) * | 2009-04-14 | 2010-10-14 | Russell Renner | Stoplight timer |
| CN101840637A (zh) * | 2010-04-20 | 2010-09-22 | 上海大学 | 基于图像处理的交通信号智能控制系统及方法 |
| DE102010052702B4 (de) * | 2010-11-26 | 2012-07-05 | Audi Ag | Verfahren zur Steuerung einer Lichtsignalanlage und zugehörige Lichtsignalanlage |
-
2015
- 2015-03-12 WO PCT/EP2015/055219 patent/WO2015144445A1/de not_active Ceased
- 2015-03-12 EP EP15710754.1A patent/EP3084746B1/de active Active
- 2015-03-12 PL PL15710754T patent/PL3084746T3/pl unknown
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| Publication number | Publication date |
|---|---|
| WO2015144445A1 (de) | 2015-10-01 |
| PL3084746T3 (pl) | 2020-06-29 |
| EP3084746B1 (de) | 2020-01-15 |
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