CN108734973A - A kind of phase of main line two-way green wave-signal synthesis optimization method - Google Patents
A kind of phase of main line two-way green wave-signal synthesis optimization method Download PDFInfo
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Abstract
The present invention provides a kind of phase of main line two-way green wave-signal synthesis optimization methods, include the following steps：It establishes to increase green wave width and reduce average traffic delay as the phase of target-signaling plan Integrated Optimization Model, model is associated with signaling plan with arterial traffic tissue, phasing scheme with three big factor of traffic flow structure according to the crossway of the main stem canalization mode, intersection spacing and gives single group flow structure optimization method and multigroup flow structure optimization method, phasing scheme sensitivity is wherein introduced respectively selects optimum phase-signal timing plan with signal parameter robustness, the flow structure that β estimates finally is unsatisfactory for evaluation of estimate and updates control parameter, is grouped again；The present invention is based on the Urban arterial road coordinate control optimization methods of multi-period control program, fully consider multigroup flow structure, traffic organization, phasing scheme and pedestrian's street crossing factor, and the accurate transport need for handling day part improves operational efficiency, reduces transportation cost.
Description
Technical field
The present invention relates to traffic control and management technical fields, more specifically, more particularly to a kind of based on multi-period control
The Urban arterial road coordinate control optimization method of scheme processed.
Background technology
Urban trunk is the main artery of urban road traffic network, has the spies such as mileage is long, service traffic volume is big, speed is high
Point is effective impetus of Optimizing City network traffic mobile equilibrium, even more implements " Smooth Traffic Project " foothold.
Coordinating control aspect, China is also attempted some large- and-medium size cities, and has successively been introduced advanced intelligence and handed over
Logical Control management system, as the SCOOT systems of Britain are introduced in Beijing, Chengdu and Dalian；The big profit of Australia is introduced in Shenyang, Shanghai, Guangzhou
Sub- SCATS systems；KYOSAN systems of Shenzhen Introduced from Japan etc..However, the above coordinated control system is with self adaptive control
It is higher to detection coil and its hardware facility degree of dependence based on mode.The line for being used to detect in view of each big city in China
High failure rate is enclosed up to 30%, the situation of real-time traffic data inaccuracy is easily caused, is unfavorable for coordinated control system and makes suitably
Traffic control strategy scheme.In addition, self adaptive control mode may be because its frequent switching strategy and to traffic flow cause compared with
Large disturbances, the effect improved to traffic is possible " running counter to desire ", therefore, coordination control of the system above to China arterial street
System does not have general applicability.
Currently, use scope most wide Intersection Controlling Fashion in China's is multi-period timing controlled (Time-of-Day) plan
Slightly.Multi-period Time controlling schema refers to according to historical traffic amount data, for the magnitude of traffic flow of different periods in each week, each day
Situation and traffic circulation environment make the signal timing plan for the fluctuation for adapting to traffic flow respectively.Due to its efficient stable, no
It depends on the hardware devices such as detector unduly, has the characteristics that benefit-cost ratio is higher, economic results in society are notable, are at this stage most
Meet the strategy of China's traffic signalization requirement.
Multi-period Time controlling schema and arterial highway signal coordinated control strategy appropriate combination are made suitable for China city
The multi-period coordination control strategy of city arterial highway can not only meet Urban arterial road coordinate control and solve city friendship from global angle
The expectation of logical congestion problems, the phenomenon that avoiding single-point control " robbing Peter to pay Paul "；It can use again long-tested more in China
Period control strategy is not influenced by hardware device facility, reaches the requirement of traffic control efficient stable.Therefore, arterial street is more
Period coordination control strategy will have vast potential for future development in China urban traffic control field.
Invention content
The purpose of the present invention is to provide a kind of phase of main line two-way green wave-signal synthesis optimization methods, in solution
The coordinated control systems such as the SCOOT systems, SCATS systems, KYOSAN systems proposed in background technology are stated with self adaptive control
It is higher to detection coil and its hardware facility degree of dependence based on mode.The line for being used to detect in view of each big city in China
High failure rate is enclosed up to 30%, the situation of real-time traffic data inaccuracy is easily caused, is unfavorable for coordinated control system and makes suitably
Traffic control strategy scheme.In addition, self adaptive control mode may be because its frequent switching strategy and to traffic flow cause compared with
Large disturbances, to traffic improve effect may " running counter to desire " the problem of and deficiency.
To achieve the above object, the present invention provides a kind of phase of main line two-way green wave-signal synthesis optimization method, by
Technological means is reached in detail below：
A kind of phase of main line two-way green wave-signal synthesis optimization method, including：Phase-signal under multigroup flow structure；
Phase-signal is made up of phase-signal under multiple single group flow structures under multigroup flow structure, and single group flow knot
Phase-signal is made of following steps under structure：
1) intersection canalization and traffic flow structure and intersection spacing；
2) each intersection of Setting signal computation of Period flows to required long green light time and theoretical green wave after determining crucial intersection
Width；
3) build space-time coordinates, draw theoretical green wave figure and build signal establish digitlization flow direction-when m- signal matrix；
4) it uses the signal period, determine uplink and downlink Green Zone Integrated Optimization Model, optimize Traffic Organization and best phase
Position scheme and signaling plan, and find out scheme evaluation of estimate；
5) discrete and compare scheme evaluation of estimate under the unlike signal period, it is preferable to determine optimum signal period and corresponding synthesis are excellent
Change scheme；
Phase-signal forms multigroup stream by phase under multiple single group flow structures-signal under multigroup flow structure
Structure is measured, and multigroup flow structure seeks method to each single group flow structure with above-mentioned respectively, selects phase structure scheme
Phase of the maximum phase structure of the frequency of occurrences as multigroup flow structure；
Multigroup flow structure under determining phase structure scheme, with phase bit, determine the signal period, determine uplink and
Downlink green-zone parameters Optimized model solves signaling plan, and finds out scheme evaluation of estimate, and introduces β and estimate, and evaluation of estimate is unsatisfactory for
The flow structure update control parameter estimated, is grouped again；
The evaluation function gm (gk, gd) for establishing comprehensive green wave width gk and average traffic delay gd, meets：Gm (gk, gd)
=μ * gk- (1- μ) * gd.Wherein：μ is harmonic coefficient, takes 0~1.
As advanced optimizing for the technical program, a kind of phase of main line two-way green wave of the present invention-signal synthesis optimization
Gone out needed for two-way green wave by the demand of the not parking passage of the crossway of the main stem through vehicles and intersection spacing, backstepping described in method
Matched-phase is simultaneously distributed in green light time zone, to realize that green wave maximizes.
As advanced optimizing for the technical program, a kind of phase of main line two-way green wave of the present invention-signal synthesis optimization
Single group flow structure described in method by way of the crossway of the main stem canalization, organizational form and flow to flow structure to determine crucial hand over
Prong, then the not parking volume of traffic of keeping straight on according to long green light time needed for the flow direction of each intersection of Setting signal computation of Period and by main line are true
The green wave width of theorem opinion, to draw theoretical green wave figure.
As advanced optimizing for the technical program, a kind of phase of main line two-way green wave of the present invention-signal synthesis optimization
Function evaluation of estimate of each flow structure under optimum angle structure, period 1 and the first signaling plan is found out described in method, so
The average function evaluation of estimate for calculating multigroup flow structure afterwards then calculates function evaluation of estimate and average function evaluation of estimate ratio
Value, if ratio is estimated less than β, needs to be grouped again；Otherwise, same group can be summarized as.
As advanced optimizing for the technical program, a kind of phase of main line two-way green wave of the present invention-signal synthesis optimization
Described in method by intersection organization scheme, phasing scheme and intersection control parameter with intersection traffic flow structure with vehicle road
Multi-to-multi mapping relations between section hourage, establish model IOM-TPSS.
As advanced optimizing for the technical program, a kind of phase of main line two-way green wave of the present invention-signal synthesis optimization
Contain in IOM-TPSS models described in method and determines the signal period, determines uplink and downlink Green Zone Integrated Optimization Model IOM-PCG and determine phase
Position determines the signal period, determines uplink and downlink green-zone parameters Optimized model two kinds of signal timing dial methods of IOM-PPCG.
Due to the application of the above technical scheme, the present invention has following advantages compared with prior art：
The present invention considers the crossway of the main stem canalization mode, intersection spacing, three big factor of traffic flow structure and main line
Traffic organization, phasing scheme are associated with signaling plan, based on green wave principle of compositionality and meet condition, to increase green wave width and drop
Low average traffic delay is target, establishes IOM-TPSS models so that signalized intersections control time division effect is controllable, and operation stream
Journey is more standardized, obtains following four achievements：
1. main line two-way green wave principle of compositionality is analyzed, when uplink and downlink long green light time is divided into queuing duration with green wave
It is long, and maximum green wave duration needed for uplink and downlink is chosen as on crucial intersection in theoretical green wave width rather than Traditional Method
Row and downlink long green light time so that green wave has high robust.
2. by the green wave of structural theory, based on obtained uplink and downlink theory Green Zone, construct to increase green wave
It width and reduces the evaluation function that main line average traffic delay is target and carries out fixed cycle, determines uplink and downlink Green Zone and solve to obtain signal
Prioritization scheme, then scheme phase difference is found out by the moment based on the theoretical green wave of uplink is not parking, ensure the validity of green wave.
3. discussing that adoptable three kinds of schemes and main line left-hand rotation green time are not when non-main line left-hand rotation green time deficiency
The adoptable three kinds of schemes of foot, ensure uplink and downlink long green light time from traffic organization method, and condition is provided to construct green wave.
4. under pair multigroup flow structure, determining optimum phase scenario-frame using mains phase scheme sensitivity, then use
Phase bit, fixed cycle determine uplink and downlink Green Zone and solve to obtain signal prioritization scheme, then use main signal parameter robustness,
The signal parameter for meeting various flow structure is picked out, mains phase scheme and signal parameter scheme practicability can be promoted.
The beneficial effects of the present invention are：The present invention is based on the Urban arterial road coordinate control optimization sides of multi-period control program
Method fully considers multigroup flow structure, traffic organization, phasing scheme and pedestrian's street crossing factor, according to determining phase structure, period
The sequence of duration and signaling plan clearly distinguishes day part and corresponds to the traffic control scheme used, the accurate friendship for handling day part
Logical demand, improves operational efficiency, reduces transportation cost.
The application provides a kind of according to intersection organization scheme, phasing scheme and the same intersection traffic of intersection control parameter
Flow structure is with multi-to-multi mapping relations between vehicle road trip time, to increase green wave width and reduce average traffic delay as target
Phase-signaling plan Integrated Optimization Model (IOM-TPSS).Contain in model and determines the signal period, determines uplink and downlink Green Zone synthesis
Optimized model (IOM-PCG) and phase bit determine the signal period, determine uplink and downlink green-zone parameters Optimized model (IOM-PPCG) two
Kind signal timing dial method introduces β and estimates and use phasing scheme sensitivity P α and signal parameter robustness n α, evaluation phase and letter
The suitability of number parametric scheme, and the multigroup flow structure of processing is programmed to IOM-TPSS models, after obtaining multi-period division
Control program, it is intended to by the technology, achieve the purpose that solve the problems, such as with improve practical value.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the solution of the present invention flow chart；
Fig. 2 is the flow direction number schematic diagram of the crossway of the main stem of the present invention；
Fig. 3 is m- apart from schematic diagram when being main line of the present invention；
Fig. 4 is the theoretical uplink and downlink Green Zone schematic diagram of the present invention；
Fig. 5 is the intersection phase bit number and combination of flow figure of the present invention；
Domain tyeory main line Green Zone is converted into the process signal of theoretical standard main line Green Zone while Fig. 6 is the present invention；
Fig. 7 is (P of the invention5, P6, P9, P10) under combinatorial phase flow direction-when m- signal condition schematic diagram；
Fig. 8 is the two-way green wave and phase difference schematic diagram of the present invention；
Fig. 9 is the G1 model flow figures of the present invention；
Figure 10 is the G2 model flow figures of the present invention；
Figure 11 is the G3 model flow figures of the present invention；
Figure 12 is that the fixed cycle signal of the present invention optimizes schematic diagram；
Figure 13 is the green wave figure of graphical method of the present invention；
Figure 14 is the green wave figure of prioritization scheme of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
It should be noted that in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with
On；The orientation of the instructions such as term "upper", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion "
Or position relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of instruction or hint meaning or element must have a particular orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance.
Meanwhile in the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection " should be done
It broadly understood, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；Can be mechanical connection,
Can also be to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Fig. 1 to Figure 14 is referred to, the present invention provides a kind of tool of the phase of main line two-way green wave-signal synthesis optimization method
Body technique embodiment：
A kind of phase of main line two-way green wave-signal synthesis optimization method, including：Phase-signal under multigroup flow structure；
Phase-signal is made up of phase-signal under multiple single group flow structures under multigroup flow structure, and under single group flow structure
Phase-signal is made of following steps：
1) intersection canalization and traffic flow structure and intersection spacing；
2) each intersection of Setting signal computation of Period flows to required long green light time and theoretical green wave after determining crucial intersection
Width；
3) build space-time coordinates, draw theoretical green wave figure and build signal establish digitlization flow direction-when m- signal matrix；
4) it uses the signal period, determine uplink and downlink Green Zone Integrated Optimization Model, optimize Traffic Organization and best phase
Position scheme and signaling plan, and find out scheme evaluation of estimate；
5) discrete and compare scheme evaluation of estimate under the unlike signal period, it is preferable to determine optimum signal period and corresponding synthesis are excellent
Change scheme；
Phase-signal forms multigroup flow knot by phase under multiple single group flow structures-signal under multigroup flow structure
Structure, and multigroup flow structure seeks method to every group of flow structure with above-mentioned respectively, and it is maximum to select the phase structure scheme frequency of occurrences
Phase of the phase structure as multigroup flow structure；
Multigroup flow structure, with phase bit, determines the signal period, determines uplink and downlink under determining phase structure scheme
Green-zone parameters Optimized model solves signaling plan, and finds out scheme evaluation of estimate, and introduces β and estimate, and evaluation of estimate is unsatisfactory for estimating
Flow structure update control parameter, be grouped again；
The evaluation function gm (gk, gd) for establishing comprehensive green wave width gk and average traffic delay gd, meets：Gm (gk, gd)=μ *
gk-(1-μ)*gd.Wherein：μ is harmonic coefficient, takes 0~1.
Specifically, by the demand and intersection spacing of the not parking passage of the crossway of the main stem through vehicles, backstepping goes out two-way
Matched-phase is simultaneously distributed in green light time zone needed for green wave, to realize that green wave maximizes.
Specifically, single group flow structure is by way of the crossway of the main stem canalization, organizational form and flows to flow structure with true
Fixed key intersection, then kept straight on according to long green light time needed for each intersection flow direction of Setting signal computation of Period and by main line not parking
The volume of traffic determines theoretical green wave width, to draw theoretical green wave figure.
It is commented specifically, finding out function of each flow structure under optimum angle structure, period 1 and the first signaling plan
Value, then calculates the average function evaluation of estimate of multigroup flow structure, then calculates function evaluation of estimate and commented with average function
Value ratio needs to be grouped again if ratio is estimated less than β；Otherwise, same group can be summarized as.
Specifically, by intersection organization scheme, phasing scheme and intersection control parameter with intersection traffic flow structure
With multi-to-multi mapping relations between vehicle road trip time, model IOM-TPSS is established.
Determine the signal period specifically, containing in IOM-TPSS models, determine uplink and downlink Green Zone Integrated Optimization Model IOM-PCG
And phase bit, determines the signal period, determines uplink and downlink green-zone parameters Optimized model two kinds of signal timing dial methods of IOM-PPCG.
Specifically, IOM-PCG models provide a kind of phase-signal that solution determines the signal period, determines uplink and downlink Green Zone
Timing method, duration and uplink and downlink entrance driveway Green Zone according to uplink and downlink Green Zone without overlapping, selected characteristic value rr, gg,
Gr and rg numerical value simultaneously judges whether max { uts, dts }=C is true, and then G1 models or G2 models or G3 models is selected to generate phase
Position-signal time distributing conception.
Specifically, IOM-PPCG models provide a kind of letter for solving phase bit, determining the signal period, determining uplink and downlink Green Zone
Number timing method, statistics G1 models, G2 models and G3 models generate signaling plan number of phases, then under stationary phase combination its
The ascending order arrangement theory standard uplink and downlink Green Zone moment, it then follows：
1) main line uplink and downlink Green Zone starting point is not delayed, and terminal does not shift to an earlier date；
2) uplink and downlink phase fully uses Green Zone, other phases proportionally to distribute remaining signal period duration；
3) most long three big principles find out phase duration to pedestrian's street crossing in short-term.
Specific implementation step：
1, mode, organizational form are canalized according to the crossway of the main stem and flow to flow structure to determine crucial intersection, then
Long green light time and theoretical green wave width needed for each intersection flow direction of Setting signal computation of Period, steps are as follows：
(1) cycle duration is sought to determine that crucial intersection is numbered：In four phase combination (P9, P10, P5, P6) under, it uses
Webster methods acquire jth intersection signal cycle durationThen crucial intersection ma signal period durations in m intersection
(2) Setting signal cycle duration：Minimum signal period Cmin, peak signal period Cmax, discrete is when being averaged headstock
Away from h, then Setting signal cycle duration C ∈ { Cmin, Cmin+ h ..., Cmax- h, Cmax, number of cycles nc=floor ((Cmax-
Cmin)/h)；
(3) long green light time needed for each traffic flow under Setting signal cycle duration, uplink queuing is asked to empty duration and downlink row
Team empties duration：Preceding four vehicles time headway is h respectively1、h2、h3And h4, can backstepping jth intersection i-th flow direction in cycle duration C
Need long green light timeAgain according to jth intersection uplink traffic amountPass through flow-rate ratio with not parkingDown traffic amountWith
It is not parking to pass through flow-rate ratioIt finds out uplink and downlink queuing and empties durationWith
(4) the theoretical green wave width of uplink and downlink is sought：When cycle duration C, the theoretical green wave width uw of uplink is each intersection
Long green light time needed for uplink traffic whole clearanceIt subtracts and empties the remaining long green light time of queuing vehicleMaximum value, i.e.,：Similarly, the theoretical green wave width dw of downlink：
2, build space-time coordinates, draw theoretical green wave figure and build signal establish digitlization flow direction-when m- signal square
Battle array：
(1) space-time coordinates is established：Using the crossway of the main stem spacing as abscissa, then jth intersection abscissa is xj；With when
Between be ordinate, show m+1 signal period, then the length of yM；
(2) first Green Zone of crucial intersection theory uplink and downlink is determined：Choose crucial intersection ma uplinks first
Green Zone,With first Green Zone of downlinkIts
InWithIt is first Green Zone starting point of uplink respectively, not parking by moment and Green Zone terminal.
WithIt is first Green Zone starting point of downlink respectively, not parking by moment and Green Zone terminal, meets：
(3) the theoretical green wave of uplink and downlink is drawn：Pass through moment point from the first Green Zone of crucial intersection ma uplinks is not parkingThe straight line that green wave advisory speed inverse is slope k is drawn, intersects at UB with jth intersection respectivelyj, coordinateUBjSubtract queuing clean up time downwardsObtain theoretical Green Zone starting point UAj, coordinateUBjOn increasing upwards
The theoretical green wave width uw of row, obtains theoretical Green Zone terminal UCj, coordinateThen first Green Zone of jth intersection uplinkUplink jth intersection theory Green Zone durationSimilarly, green from downlink first
Area is not parking to pass through moment pointExtraction slope is-k straight lines, and DB is intersected at jth intersectionj, coordinate
DBjSubtract queuing clean up time downwardsObtain jth intersection theory Green Zone starting point DAj, coordinateDBjIncrease the theoretical green wave width dw of downlink upwards and obtains jth intersection downlink theory Green Zone end
Point DCj, coordinateThen first Green Zone of downlinkWhen the theory Green Zone of downlink jth intersection
It is long
(4) it screens and standardizes continuous, complete cycle time zone, standard uplink Green Zone and standard down Green Zone：Jth intersection
Multiple cycle duration C may be separated by with time zone uplink and downlink Green Zone, with suitable Green Zone starting point stjIt is filtered out as cycle starting point
Continuously, complete cycle, and normalized signal period time zone [1, C] then determine uplink Green ZoneIt is green with downlink
Area
(5) establish digitlization flow direction-when m- signal matrix FTSj：For description flow direction, time and signal condition three-dimensional space
Between, using time t as abscissa, it is ordinate, numerical value s to flow to iI, tBe i flow direction in t moment signal condition, then formed flow direction-when
M- signal matrix FTSj：
Wherein：sI, t=0 or 1 indicates that it is red light or green light phase to flow to i in t moment respectively.
3, selection Integrated Optimization Model is to optimize traffic organization method, optimum phase scheme and signaling plan：
(1) non-main line flow time of letting pass is enough, preferably combinatorial phase and finds out required duration：If north-south phase combination
(P1, P2) needed for Green Zone durationMore than phase combination (P5, P6) needed for Green Zone durationThen phase combination (P5, P6) be better than
Phase combination (P1, P2), enable preferred embodiment serial numberThen preferred embodiment durationConversely, phase combination
(P5, P6) it is inferior to phase combination (P1, P2), enable preferred embodiment serial numberThen preferred embodiment duration
(2) the non-main line flow clearance time is insufficient, specially treated left turn phase：According to intersection geometric dimension, consider：①
Band turns left to mix row；2. overlapping；3. prohibiting left.At this point, north-south straight trip phase P5Required Green Zone durationEnable preferred embodiment serial number
(3) arterial traffic tissue and phasing scheme：Mains phase combination is complicated, when main line flows to distribution duration not
It is enough, use following three traffic organization method depending on road conditions：It turns around to be open in advance 1. providing；2. the areas left-hand rotation Dai Hang are arranged；③
It provides and borrows opposite track left-hand rotation intersection track.To fixed cycle duration and determine uplink and downlink Green Zone situation, uses IOM-PPCG models
Complex optimum traffic organization method and phasing scheme；
(4) the crossway of the main stem prioritization scheme is identified：1. from matrix F TSjIt is middle to identify draft norm uplink and downlink respectively
Green Zone2. numerical procedure standard long green light timeAnd split3. identifying intersection number of phases
With r phases time zone4. determining mains phase organization plan matrixWith main signal scheme matrix
4, draft norm Green Zone is converted to scheme Green Zone, in the hope of phase difference：
(1) the first Green Zone of jth intersection theory uplinkTheoretical standard uplink Green ZoneDraft norm uplink Green ZoneTheoretical standard uplink Green Zone starting point is calculated to rise with draft norm uplink Green Zone
Point difference tfrj, meet：
Enable that theoretical uplink is not parking passes through a littlePass through a little for prioritization scheme uplink is not parkingThen prioritization scheme
Green Zone uplink Green Zone starting pointWith jth and+1 intersection phase difference of jthThen mains phase difference set
Wherein：
5, multigroup flow structure mains phase is determined：Step 1~4, the θ group flow structures are repeated to multigroup flow structure to exist
It obtains corresponding to best mains phase scheme under signal period CThen zh groups main line flow structure obtains zh*ncKind mains phase
Scheme selects frequency of occurrences maximum phase (serial number BM) and is used as the optimal phase of main line wherein differing phase structure contains ZH
Position, is denoted as MEBM。
6, multigroup flow structure determines the optimum signal period：Because of main line optimum signal period CbWith main line flow structure θF
Related and not necessarily crucial intersection period Cma, but there are correspondences with period C by the green wave evaluation of estimate gm of main line.This mould
Type chooses the green wave evaluation of estimate maximum of main line and corresponds to the period as main line optimum signal period Cb。
7, signal phase duration is determinedWith phase differenceθ group main line flow structuresIn mains phase knot
Structure scheme MEBM, when signal period CM corresponds to draft norm uplink Green ZoneWith downlink Green ZoneMake
Main signal parameter is found out with IOM-PPCG Integrated Optimization ModelsPhase difference setAnd evaluation of estimateCompare simultaneously
It chooses θ m group flow structures and corresponds to signaling planAs first optimization period parameters, meet
8, multi-period division：In mains phase organization plan MEBM, signal phase durationWith phase differenceIt calculates
And compare θ group main line flow direction structuresEvaluation of estimateFind out zh group main line flow direction structure average ratings valuesIt is full
Foot：
Ask θ groups evaluation of estimate and average ratings value ratio
IfThenIt is not suitable with the program
Count adaptation schemeTotal nθIt is a, then main signal parameter robustness n α：
It will adapt in mains phase organization plan MEBM, signal phase durationWith phase differenceAccording to flow
Structure serial number merges in groups；Conversely, independent θ I in groups, and new period CI is distributed, form the Shinkansen signaling planWith phase
Potential differenceCarry out multi-period control.
Determine the signal period, determine uplink and downlink Green Zone Integrated Optimization Model：According on cycle duration C and theory of correspondences standard
Row Green Zone [uts, ute] and downlink Green Zone [dts, dte], ascending order puts in order as (ρ1, ρ2, ρ3, ρ4), find out rr, gg, gr and
Rg numerical value simultaneously judges max { uts, dtsWhether }=C is true, and then selects G1 models or G2 models or G3 model complex optimum traffic
Organizational form and signaling plan.
G1 models generate phase-signaling plan and follow following 4 steps：
1) recognition matrix FTS calculates separately preceding red sector rr1 and rear red sector rr2 durations trr1And trr2；
2) comprehensive non-main line setting organizational form and phase tpminWith tpiminAnd trr1With rr2 relationships, 1~feelings of situation are selected
Shape 5 updates matrix F TS；
3) it calculates and flows to 10 extra duration flr10=tp4-t10With flow to 7 extra duration flr7=tp3-t7.If flri< 0,
It is insufficient then to flow to i clearances, it may be considered that take and turn around or prohibit a left side in advance；
4) whether synthesis updates matrix F TS and be arranged turns around or prohibits left and 1~situation of situation, 5 traffic organization method in advance,
θ group main line flow direction structures are providedThe optimal mains phase organization plan matrix at signal period CWith signaling plan square
Battle arrayPhase difference set
1, situation 1 --- non-mains phase is distributed to the same red sector of uplink and downlink：
If max (trr1, trr2)≥0.8*tpmin, then non-mains phase distribute to the same red sector of uplink and downlink.If max
(trr1, trr2) < tpmin, it is scaled and flows to duration tiAfterwards by tpiminCorresponding phase scheme is divided from signal latter stage toward initial stage
Match, shown in concrete signal control four kinds of situation summarized results the following table 1 of optimization：
Table 1
2, situation 2 --- non-mains phase is fully allocated to two different red sectors：
(1) if max (trr1, trr2)≥max(tp1, tp2), min (trr1, trr2)≥max(tp1, tp2), then rr1 and rr2
Phase P is distributed in time zone respectively1And P2, concrete signal control optimizes as shown in table 2 under situation summarized results：
Table 2
(2) if max (trr1, trr2)≥max(tp5, tp6), min (trr1, trr2)≥max(tp5, tp6) set up, then rr1 and
Phase P is distributed in the time zones rr2 respectively5And P6, it is as shown in table 3 that concrete signal control optimizes situation summarized results：
Table 3
3, situation 3 --- non-mains phase is not exclusively distributed to two different red sectors：
If max (trr1, trr2)≥0.8max(tp1, tp2), min (trr1, trr2)≥0.8min(tp1, tp2), then rr1 and
Phase (P is not exclusively distributed in the time zones rr21, P2), it is as shown in table 4 specifically to there are following two situation summarized results：
Table 4
4, situation 4 --- non-mains phase not exclusively distributes left turn phase：
If min (trr1, trr2)≥0.8*tp6, then phase P is not exclusively distributed6, consider to provide and opposite track borrowed to turn left to intersect
, it is as shown in table 5 specifically to there are following two situation summarized results in mouth track：
Table 5
5, situation 5 --- non-mains phase turns left to let pass limited：
If min (trr1, trr2) < 0.8*tp6, turn left limited, the then max (t that individually let pass in north and southrr1, trr2) correspond to time zone
First distribution straight trip is turned left to be specified, and there are following four kinds of situations：
(1) turn left to mix row phase P according to north-south band13, non-main line is by signal control flow direction variation duration ti=max
(trr1, trr2), i=1,2,4,5, then phase is distributed according to the time zone rr1, rr2, concrete signal control optimizes under situation summarized results
As shown in table 6：
Table 6
(2) lapping phases are used to combine (P11, P12), max (t in the signal periodrr1, trr2) correspond to time zone distribution phase P5,
In master phase end, setting overlaps non-main line left-hand rotation, and concrete signal control optimizes under situation summarized results as shown in table 7：
Table 7
(3) no left turn, max (t in the signal periodrr1, trr2) correspond to time zone distribution phase P5, concrete signal control optimization
Under situation summarized results as shown in table 8：
Table 8
G2 models：The traffic of G2 model complex optimums, generation phasing scheme and signaling plan follow following 2 steps：
(1) recognition matrix FTS calculates red sector rr durations trr；
(2) comprehensive non-main line setting organizational form, phase tpminAnd tpiminAnd trrWith rr relationships, 1~situation of situation is selected
2 update matrix F TS^, other are the same as the 3rd~4 step of G1 models.
1, situation 1 --- trr≥0.8*tpmin, non-mains phase distributes to the same red sector of uplink and downlink：
If trr< tpmin, adjust and flow to duration ti, ti=ti*trr/(tpmin), i=1,2,4,5.Then by tpiminIt is corresponding
Phasing scheme distributes from top to bottom, under concrete signal control optimization situation summarized results as shown in table 9：
Table 9
2, situation 2 --- trr< 0.8*tpmin, non-mains phase turns left to let pass limited
(1) turned left using band and mix row, under concrete signal control optimization situation summarized results, as shown in table 10：
Table 10
(2) lapping phases are used to combine (P11, P12), distribution phase P in the time zones rr in the signal period5, set in master phase end
It sets the non-main line of overlap joint to turn left, under concrete signal control optimization situation summarized results as shown in table 11：
Table 11
(3) no left turn, distribution phase P in the time zones rr in the signal period5, phase phase sequence scheme is (P3, P5, P4), according to phase
A length of pt when the corresponding phase of sequence1=ρ2, pt2=ρ3-ρ2- 1, pt3=ρ4-ρ3+1。
G3 models：The traffic of G3 model complex optimums, generation phasing scheme and signaling plan follow following 2 steps：
1) recognition matrix FTS calculates red sector rr durations trr；
2) comprehensive non-main line setting organizational form, phase tpminWith tpiminAnd trr, rr relationships, first select 1~feelings of situation
Shape 2 distributes non-mains phase, then using main line flow to phase-splitting method distribution it is each flow to phase, other are the same as G1 models the 3rd
~4 situations.
G3 model main lines flow to phase-splitting method and evaluation function：Because main line Green Zone presence signal initial stage open it is bright, cannot
Green wave is influenced, so the non-main line straight trip flow direction that cannot let pass first, so after non-main line flow direction distributes, main line flows in sequential
There are three kinds of schemes, corresponding flow direction, phase are as shown in table 4-15.To s kind schemes, establish with to green wave time zone annoyance level mesh
Mark evaluation functionsgf7,10。
Object function rule：The crossway of the main stem, which turns left, always interferes expensesgf7,10To flow to 7 interference expensessgf7With flow to 10
Interference expensesgf10The sum of.Flow to 7 interference expensessgf7Calculation formula：sgf7=c1*t7+c2*sqt7+c3*sht7, s=1,2,3.
In formula：c1、c2And c3Respectively the noiseless cost coefficient in Green Zone, the preceding Green Zone cost coefficient of occupancy main line and occupancy are dry
Green Zone cost coefficient after line.sqt7Withsht7It respectively flows to 7 occupancy Green Zone front end durations and occupies Green Zone rear end duration.
Similarly, it can derive and flow to 10 interference expensessgf10With total interference expensemigf7,10：sgf10=c1*t10+c2*sqt10+c3*sht10。
Three kinds of intersection main line direction scheme and evaluation of estimate are as shown in table 12：The wherein evaluation of estimate of optimal case mimigf7,10
=minsgf7,10}=minsgf7+sgf10, s=1,2,3.
Table 12
1, situation 1 --- non-mains phase is distributed to the same red sector of uplink and downlink
If trr≥0.8*tpmin, then non-mains phase is in same time zone.If trr≥tpmin, belong to and two phase place be fully allocated；
Conversely, belonging to not exclusively distribution two phase place, adjustment flows to duration ti, ti=ti*trr/(tpmin), i=1,2,4,5.Then will
tpiminCorresponding phase scheme is distributed from top to bottom, specifically there is following two situation：
(1)tpimin=1, selected phase combines (P1, P2), there are following three situation, concrete signal control optimization situations
Under summarized results as shown in table 13：
Table 13
(2)tpimin=2, selected phase combines (P5, P6), there are following three situations, and there are following three situations, specifically
Under signal control optimization situation summarized results as shown in table 14：
Table 14
2, situation 2 --- non-mains phase turns left to let pass limited
(1) time zones rr turn left to mix row phase P using north-south band in the signal period13, three kinds of scheme evaluations of estimate are discussed respectivelysgf7,10, choose target function value minimum valuemigf7,10Scheme is as main line entrance driveway phasing scheme mi, concrete signal control optimization
Under situation summarized results as shown in Table 15：
Table 15
(P is combined using lapping phases11, P12), distribution phase P in the time zones rr in the signal period5, in master phase end, setting is taken
It connects non-main line to turn left, under concrete signal control optimization situation summarized results as shown in table 16：
Table 16
No left turn, distribution phase P in the time zones rr in the signal period5, specifically have following three situation, concrete signal control excellent
Change under situation summarized results as shown in table 17：
Table 17
Phase bit determines the signal period, determines uplink and downlink green-zone parameters Optimized model (IOM-PPCG)：In phase bit, determine
Signal period determines under the situation of uplink and downlink Green Zone, and IOM-PPCG complex optimums follow following three principles：
Meet main line uplink and downlink Green Zone starting point not delay, terminal does not shift to an earlier date；
1) phase containing uplink and downlink fully uses Green Zone, other phases proportionally to distribute remaining signal period duration；
2) long green light time needed for consideration pedestrian, non-motor vehicle and motor vehicle, setting straight trip flow direction are most grown in short-term.
3) IOM-PPCG models carry out multiphase traffic time allocation when being to number of phases using sets of plan, need to analyze out of phase with
The green wave of phase structure is constituted.For ease of description, carrying out following constraints number：
①min{ptr}≥ptmin；②dts-ute> 0；③uts-dte> 0；④dts-ute> ptmin；⑤uts-dte>
ptmin；⑥dts-ute> 2*ptmin；⑦uts-dte> 2*ptmin；⑧C-ρ4> ptmin；⑨C-ρ4> 2*ptmin；⑩C-ρ4> 3*
ptmin。
It counts G1 models, G2 models and G3 models and generates signaling plan, co-exist in 8 kinds of three phase signaling plan, four phases
8 kinds of 20 kinds of the signaling plan in position and five phase signal schemes.It is combined according to stationary phaseTheoretical standard uplink and
Downlink Green Zone [uts, ute] and [dts, dte] (its ascending order puts in order (ρ1, ρ2, ρ3, ρ4)), to any period duration C, according to
IOM-PPCG complex optimum principles, number of phases rmShi Caiyong a sets of planPhase parameter timing is carried out, when finding out phase
It is long。
(1) three phase signal timing dial：Given three phase (p1, p2, p3), theoretical standard uplink and downlink Green Zone [uts, ute]
[dts, dte], to any period duration C, if green wave can be formed, there are a=2 kind signal prioritization schemes.
1) r=3, a=1.Green wave structure condition in three phases and phase duration the first function representation, summarized results
It is lower as shown in table 18：
Table 18
2) r=3, a=2.Similarly, second of its green wave structure condition and phase duration are individually listed to given phase structure
Function representation, under summarized results as shown in table 19：
Table 19
(2) four phase signal timings：Intersection gives four phase (p1, p2, p3, p4), then there are six kinds of signal optimization sides
Case arranges as follows：
1) r=4, a=1.Its green wave structure condition and phase duration the first letter are individually listed to given four phase structures
Number is expressed, under summarized results as shown in table 20：
Table 20
2) r=4, a=2.Its second of letter of green wave structure condition and phase duration is individually listed to given four phase structures
Number is expressed, under summarized results as shown in table 21：
Table 21
3) r=4, a=3.Its green wave structure condition and phase duration the third letter are individually listed to given four phase structures
Number is expressed, under summarized results as shown in table 22：
Table 22
4) r=4, a=4.The 4th kind of letter of its green wave structure condition and phase duration is individually listed to given four phase structures
Number is expressed, under summarized results as shown in table 23：
Table 23
5) r=4, a=5.The 5th kind of letter of its green wave structure condition and phase duration is individually listed to given four phase structures
Number is expressed, under summarized results as shown in table 24：
Table 24
6) r=4, a=6.The 6th kind of letter of its green wave structure condition and phase duration is individually listed to given four phase structures
Number is expressed, under summarized results as shown in Table 25：
Table 25
(3) five phase signal timings：Intersection gives five phase (p1, p2, p3, p4), then there are three kinds of signal optimization sides
Case arranges as follows：
1) r=5, a=1.Its green wave structure condition and phase duration the first letter are individually listed to given five phase structures
Number is expressed, under summarized results as shown in table 26：
Table 26
2) r=5, a=2.Its green wave structure condition and phase duration the first letter are individually listed to given five phase structures
Number is expressed, under summarized results as shown in table 27：
Table 27
3) r=5, a=3.Its green wave structure condition and phase duration the first letter are individually listed to given five phase structures
Number is expressed, under summarized results as shown in table 28：
Table 28
In order to prove the method for the invention in arterial highway Traffic flux detection effect, in identical traffic flow structure and common period
Under, the quality more of the invention with traditional graphical method：The method of the present invention empties duration removing to be lined up, in the case of ensureing green wave
The green wave width of uplink and downlink be all 18；And graphical method does not remove queuing and empties duration, it cannot be guaranteed that upstream bandwidth when green wave, under
The no green wave of row, as shown in Figure 13 and 14.
It by comparing result, is apparent from, optimizes graphical method with the method for the present invention, can realize the not parking passage of green wave, effectively
Reduce vehicle delay.
In summary：A kind of phase of main line two-way green wave-signal synthesis optimization method is two-way green by analyzing main line
Uplink and downlink long green light time is divided into and is lined up duration and green wave duration, and chooses needed for uplink and downlink most by wave principle of compositionality
Big green wave duration is as crucial intersection uplink and downlink long green light time in theoretical green wave width rather than Traditional Method so that green wave
With high robust；By the green wave of structural theory, based on obtained uplink and downlink theory Green Zone, construction is green to increase
It wave width and reduces the evaluation function that main line average traffic delay is target and carries out fixed cycle, determines uplink and downlink Green Zone and solve to obtain letter
Number prioritization scheme, then scheme phase difference is found out by the moment based on the green wave of theoretical uplink is not parking, ensure the validity of green wave；
When non-main line left-hand rotation green time deficiency, adoptable three kinds of schemes can not adopt completely with main line left-hand rotation green time through discussion
Three kinds of schemes ensure uplink and downlink long green light time from traffic organization method, and condition is provided to construct green wave；By right
Under multigroup flow structure, optimum phase scenario-frame is determined using mains phase scheme sensitivity, then with phase bit, fixed week
Phase determines uplink and downlink Green Zone and solves to obtain signal prioritization scheme, then uses main signal parameter robustness, pick out meet it is more
The signal parameter of flow structure can promote mains phase scheme and signal parameter scheme practicability；By being based on multi-period control
The Urban arterial road coordinate control optimization method of scheme fully considers multigroup flow structure, traffic organization, phasing scheme and pedestrian's mistake
Street factor clearly distinguishes day part and corresponds to the traffic used according to the sequence for determining phase structure, cycle duration and signaling plan
Control program, the accurate transport need for handling day part, improves operational efficiency, reduces transportation cost.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of phase of main line two-way green wave-signal synthesis optimization method, including：Phase-signal under multigroup flow structure；Its
It is characterized in that：
Phase-signal is made up of phase-signal under multiple single group flow structures under multigroup flow structure, and single group stream
Phase-signal is made of following steps under amount structure：
1) intersection canalization and traffic flow structure and intersection spacing；
2) each intersection of Setting signal computation of Period flows to required long green light time and theoretical green wave width after determining crucial intersection；
3) build space-time coordinates, draw theoretical green wave figure and build signal establish digitlization flow direction-when m- signal matrix；
4) it uses the signal period, determine uplink and downlink Green Zone Integrated Optimization Model, optimization Traffic Organization and optimum phase side
Case and signaling plan, and find out scheme evaluation of estimate；
5) discrete and compare scheme evaluation of estimate under the unlike signal period, it is preferable to determine optimum signal period and corresponding complex optimum sides
Case；
Phase-signal forms multigroup flow knot by phase under multiple single group flow structures-signal under multigroup flow structure
Structure, and multigroup flow structure seeks method to each single group flow structure with above-mentioned respectively, selects the appearance of phase structure scheme
Phase of the maximum phase structure of frequency as multigroup flow structure；
Multigroup flow structure, with phase bit, determines the signal period, determines uplink and downlink under determining phase structure scheme
Green-zone parameters Optimized model solves signaling plan, and finds out scheme evaluation of estimate, and introduces β and estimate, and evaluation of estimate is unsatisfactory for estimating
Flow structure update control parameter, be grouped again；
The evaluation function gm (gk, gd) for establishing comprehensive green wave width gk and average traffic delay gd, meets：Gm (gk, gd)=μ *
gk-(1-μ)*gd.Wherein：μ is harmonic coefficient, takes 0~1.
2. a kind of phase-signal synthesis optimization method of main line two-way green wave according to claim 1, it is characterised in that：
The demand by the not parking passage of the crossway of the main stem through vehicles and intersection spacing, backstepping go out green light needed for two-way green wave
Matched-phase is simultaneously distributed in time zone, to realize that green wave maximizes.
3. a kind of phase-signal synthesis optimization method of main line two-way green wave according to claim 1, it is characterised in that：
The single group flow structure by way of the crossway of the main stem canalization, organizational form and flow to flow structure to determine crucial intersect
Mouthful, then the not parking volume of traffic of keeping straight on according to long green light time needed for the flow direction of each intersection of Setting signal computation of Period and by main line determines
Theoretical green wave width, to draw theoretical green wave figure.
4. a kind of phase-signal synthesis optimization method of main line two-way green wave according to claim 1, it is characterised in that：
The function evaluation of estimate that each flow structure is found out under optimum angle structure, period 1 and the first signaling plan, is then counted
The average function evaluation of estimate for calculating multigroup flow structure then calculates function evaluation of estimate and average function evaluation of estimate ratio, if
Ratio is estimated less than β, then needs to be grouped again；Otherwise, same group can be summarized as.
5. a kind of phase-signal synthesis optimization method of main line two-way green wave according to claim 1 or 2, feature exist
In：It is described by intersection organization scheme, phasing scheme and intersection control parameter with intersection traffic flow structure with vehicle road
Multi-to-multi mapping relations between section hourage, establish model IOM-TPSS.
6. a kind of phase of main line two-way green wave-signal synthesis optimization method, feature exist according to claim 1 or 5
In：Contain in the IOM-TPSS models and determines the signal period, determines uplink and downlink Green Zone Integrated Optimization Model IOM-PCG and determine phase
Position determines the signal period, determines uplink and downlink green-zone parameters Optimized model two kinds of signal timing dial methods of IOM-PPCG.
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| CN113205695A (en) * | 2021-04-13 | 2021-08-03 | 东南大学 | Multi-period length bidirectional trunk line green wave control method |
| CN113516856A (en) * | 2021-06-23 | 2021-10-19 | 东南大学 | Trunk line coordination control method considering road running speed and intersection traffic state |
| CN113516856B (en) * | 2021-06-23 | 2022-11-04 | 东南大学 | Trunk line coordination control method considering road running speed and intersection traffic state |
| CN114120673A (en) * | 2022-01-28 | 2022-03-01 | 腾讯科技（深圳）有限公司 | Information processing method, device and equipment for signal lamp and storage medium |
| CN114120673B (en) * | 2022-01-28 | 2022-05-13 | 腾讯科技（深圳）有限公司 | Information processing method, device and equipment for signal lamp and storage medium |
| CN114863687A (en) * | 2022-07-06 | 2022-08-05 | 华录易云科技有限公司 | Road traffic intelligent optimization method based on main line green wave |
| CN114863687B (en) * | 2022-07-06 | 2022-09-16 | 华录易云科技有限公司 | Road traffic intelligent optimization method based on trunk line green wave |
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