CN109615861A - A kind of ramp control system for supporting single-point and global control - Google Patents
A kind of ramp control system for supporting single-point and global control Download PDFInfo
- Publication number
- CN109615861A CN109615861A CN201811599078.4A CN201811599078A CN109615861A CN 109615861 A CN109615861 A CN 109615861A CN 201811599078 A CN201811599078 A CN 201811599078A CN 109615861 A CN109615861 A CN 109615861A
- Authority
- CN
- China
- Prior art keywords
- ramp
- control
- host
- ring road
- point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention discloses the ramp control systems that one of technical field of traffic control supports single-point and global control, each ramp location is equipped with ramp metering rate host, video analysis host and semaphore, video analysis host analysis monitor video, obtain relevant traffic parameter, ramp metering rate host obtains current traffic parameter, the traffic parameter of this ring road is distributed to the ramp metering rate host of adjacent ring road simultaneously, and obtain the traffic parameter of other ring roads, ramp metering rate host obtains current demand signal instruction period and phase information, and carry out control-Strategy analysis, then control signal is issued to semaphore, the information that signal lamp is issued according to semaphore carries out signal and shows.The present invention can be lined up situation according to current main line occupation rate and ring road and carry out best configuration, so that traffic capacity is reached maximization, to be reduced as far as traffic jam, and can be selected according to the actual conditions of road, have greater flexibility.
Description
Technical field
The present invention relates to technical field of traffic control, in particular to a kind of circle for supporting single-point and global control
Road control system.
Background technique
Highway is initially as by the proposition of free road and design of traffic signalization, basic object is not to pass through
Biggish service capacity and higher service level come make vehicle quickly, efficiently, it is comfortable, easily travel.But as traffic goes out
The gradually growth of row demand, the degree of crowding of highway are increasingly sharpened, pure due to investing the limitation with environment etc. factor
It is more and more unworkable that essence alleviates congested in traffic mode by expressway construction is increased, and how to tighten traffic management, passes through
The service efficiency that control means improve existing highway is gradually more paid close attention to.
External scholar begins to the traffic modeling and control theory of research super expressway, subsequent phase from the 1960s
It closes theoretical gradually mature and obtains more universal application in practice.Currently, external many cities all have it is more complete
Traffic Control System for Expressway, while also having much not perfect enough solve the problems, such as.According to the experience of existing research, entrance circle
It is also a kind of most effective traffic control mode for alleviating highway congestion phenomenon that road control, which is most widely used, passes through utilization
Ring road signal lamp adjusts the flow rate that vehicle enters super expressway main line, it is possible to reduce jam situation shortens the congestion time, mentions
The effective utilization of highway is risen, safety when Entrance ramp vehicle is incorporated to main line is improved, reduces traffic accident etc..
Ramp metering rate strategy can be divided into static cost control according to the difference of real-time response time and dynamic controls, according to control
The difference of range can be divided into single-point control and global coordination control.
Static cost control strategy refers to the Coordinated Control Scheme that each ring road in different periods is formulated according to historical data, and pre-
It sets in control machine, will not be made a response for real-time detection information.Although static cost control has the spies such as simple and easy, small investment
Point, but flexibility is very poor, will not be changed for real-time detection, if there is traffic accident, large-scale activity etc. are sudden dry
It disturbs, timing ramp metering rate can not be handled.
The basic object of dynamic single-point control is to solve single-point ring road traffic congestion, and control range is certain ring road, benefit
The real-time detector data of ring road and its adjacent segments is used to replace historical data as the basis of control decision.Papageorgiou exists
The ALINEA method proposed in 1991, is a kind of feedback set up using classical Theory of Automatic Control.Its base
This thinking are as follows: ramp metering rate is considered as a state regulator, the density of main line downstream is made by adjusting ring road rate of inflow
Or occupation rate maintains perfect condition as far as possible.ALINEA method is a kind of local responsive metering extremely successful in practical application
Method is then developing considerable amendment evolving form.Compared with static cost control, the control of dynamic single-point has very big
Flexibility.But it, can not since its detection and control range are only limitted to some ring road without considering the coordination between each ring road
Reach the target of system optimal.On the other hand, compared with the control of dynamic global coordination, whether technology is complicated for the control of dynamic single-point
Property or investment cost will be much lower, and in quite a number of cases, the local problem of super expressway is more than system problem
It is serious, therefore local responsive metering strategy still has sizable practicability and development space.
The control range of dynamic global coordination control strategy is that freeway facility is all or regional area part ring road, benefit
Real-time detector data is used to replace historical data as the basis of control decision.In recent years, a variety of different control strategies are suggested,
Such as: system optimal coordinated control (systematic optimal control), state regulator control (state
Regulator control) and heuristic coordinated control (heuristic control) etc..These types of method has respectively
Advantage and disadvantage, wherein since the practicality and flexibility are stronger, the practical application in the U.S. is very wide for heuristic coordinated control
It is general.The Bottleneck algorithm of the propositions such as Jacobsen is typical heuristic traffic signal coordination.It is used in single-point level
Occupation rate control method obtains the regulation rate of each ring road；Coordinating level, each ring road is also obtained according to flow conservation principle
Regulation rate；Later, in each ring road, two regulation rates obtained are compared, the adjusting for taking its small value final as the ring road
Rate.
In China, since super expressway construction is started late, correlation theory research also relatively lags behind, at present still without ring road
The practical application example of control.Relevant control hardware device is also substantially at space state.
Drawbacks described above is worth solving.
Summary of the invention
In order to overcome the shortcomings of that existing technology, the present invention provide a kind of ramp metering rate system for supporting single-point and global control
System.
Technical solution of the present invention is as described below:
A kind of ramp control system for supporting single-point and global control, which is characterized in that each ramp location is equipped with ring road
Host, video analysis host and semaphore are controlled, is connected between the ring road closed on by the ramp metering rate host:
The video analysis host is connect with several video cameras, and the video analysis host passes through analysis monitor video,
Obtain relevant traffic parameter；
The video analysis host is connect with the ramp metering rate host, and the ramp metering rate host is from the video analysis
Current traffic parameter is obtained at host, while the traffic parameter of this ring road being distributed to the ramp metering rate master of adjacent ring road
Machine, and obtain the traffic parameter of other ring roads；
The ramp metering rate host is connect with the semaphore, and the ramp metering rate host obtains current demand signal and indicates the period
And phase information, and control-Strategy analysis is carried out according to current demand signal phase and road conditions parameter information, then to the semaphore
Issue control signal；
The semaphore is connect with several signal lamps, and the signal lamp carries out letter according to the information that the semaphore issues
Number display.
According to the present invention of above scheme, which is characterized in that it is additionally provided with memory module in the ramp metering rate host, it is described
Memory module real-time storage road conditions parameter information and Signalized control information.
According to the present invention of above scheme, which is characterized in that the video camera includes under ring road entrance camera and ring road
Swim video camera: the ring road entrance camera is located at the inlet of ring road, for detecting ring road queue length；The ring road downstream
Position for video camera is at the main line of ring road downstream, for detecting roadway occupancy.
According to the present invention of above scheme, which is characterized in that the video camera passes through Ethernet and the video analysis master
Machine connection, the video analysis host are connect by Ethernet with the ramp metering rate host.
According to the present invention of above scheme, which is characterized in that between two closed on the ramp metering rate host by with
Too net connection.
According to the present invention of above scheme, which is characterized in that the ramp metering rate host by RS-422 interface with it is described
Semaphore is connected.
According to the present invention of above scheme, which is characterized in that the ramp metering rate host is according to user setting using dynamic
Single-point control strategy or dynamic global coordination control strategy.
Further, the basic model of the dynamic single-point control strategy is as follows:
R (k)=r (k-1)+KR[Od-Oout(k-1)] (1)
In formula, r (k) is the metering rate in k-th of control time；
R (k-1) is the metering rate in -1 control time of kth；
OoutIt (k-1) is -1 control time ring road downstream main line occupation rate of kth；
OdFor the occupation rate of ring road downstream main line ideally；
KRFor adjustment parameter.
Further, adjustment parameter KRValue is 70PCU per hour.
Further, metering rate is inhibited and is fed back according to the queue length situation of Entrance ramp, inhibited
And feedback model are as follows:
max[d(k-1)-(Lmax-L(k))/T,rmin]≤r(k)≤min[d(k-1)+L(k)/T,rmax] (2)
Wherein, d (k-1) is -1 control time ring road vehicle arriving rate of kth, LmaxFor for the maximum allowable queuing vehicle of ring road
Number, L (k) are the initial ring road queuing vehicle number of k-th of control time, and T is the time span of each control time, rminAnd rmax
For the experience extreme value of metering rate.
Further, in the dynamic global coordination control strategy:
In single-point level, the regulation rate of each ring road is obtained using occupation rate control method；
Coordinating level, the regulation rate of each ring road is obtained according to flow conservation principle；
In each ring road, two regulation rates that single-point level and coordination level are obtained are compared, and take its small value as the circle
The final regulation rate in road.
Further, coordinate level, specific calculating process specifically includes the following steps:
(1) it detects and determines main line traffic bottlenecks i；
(2) reduction of each Entrance ramp regulation rate in its upstream is calculated for each bottleneck i according to flow conservation principle
Total amount, and in its coverage, empirically this reduction amount is assigned to each Entrance ramp associated there by weight；
(3) the coordination level regulation rate of each Entrance ramp j is calculated.
Further, in the step (1), if certain section meets following two condition and thinks to move herein
State traffic bottlenecks:
O(i,k)≥OC(i) (3)
Qup(i,k)+Qon(i,k)≥Qdown(i,k)+Qoff(i,k) (4)
In formula: O (i, k) is the average occupancy on the section of the downstream section i in a control time；
OCIt (i) is the critical occupation rate of the downstream section i section；
Qup(i, k) is the section upstream i section flow in a upper control time；
Qon(i, k) is all Entrance ramp total fluxs within the scope of the i of section in a upper control time；
Qdown(i, k) is the section downstream i section flow in a upper control time；
Qoff(i, k) is the total discharge of all outlet ports ring road within the scope of the i of section in a upper control time.
Further, in the step (2), the coverage and weight coefficient of each traffic bottlenecks are according to upstream entrance
Factor of both ring road to space length and historical experience the OD distribution of bottleneck road is preset:
Qre(i, k+1)=[Qup(i,k)+Qon(i,k)]-[Qdown(i,k)+Qoff(i,k)] (5)
Rre(j, i, k+1)=Qre(i,k+1)·Fji·ΣFji (6)
In formula: Qre(i, k+1) is respectively to be associated with Entrance ramp within the scope of bottleneck road i upstream influences to flow into traffic (next
In control time) reduction total amount；
Rre(j, i, k+1) is the reduction amount that the upstream bottleneck road i is associated with that Entrance ramp j flows into traffic；
FjiThe relative weight coefficient of Entrance ramp j is associated with for the upstream bottleneck road i.
Further, in the step (3), the coordination level regulation rate calculation formula of each Entrance ramp j are as follows:
R (j, k+1)=Q (j, k)-maxi[Rre(j,i,k+1)] (7)
In formula: Q (j, k) is the practical influx of Entrance ramp j in a upper control time；
R (j, k+1) is the regulation rate of Entrance ramp j in next control time.
According to the present invention of above scheme, the beneficial effect is that:
The present invention acquires road conditions using photographic device in real time, detects traffic parameter using video analysis equipment, recycles circle
Road controls host and carries out metering rate calculating, obtains next step most in conjunction with current signal designation period, phase information
Good signal designation period, phase information, and then the Display Realization of ring road signal lamp is implemented to adjust, so that the instruction side of signal lamp
Formula is no longer fixed, can be lined up situation according to current main line occupation rate and ring road and carry out best configuration, reach traffic capacity
To maximization, to be reduced as far as traffic jam.
The present invention supports to carry out dynamic single-point control strategy to ring road, also supports dynamic global coordination control strategy, use
Person can select according to the actual conditions of road, have greater flexibility.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
With reference to the accompanying drawing and the present invention is further described in embodiment:
As shown in Figure 1, a kind of ramp control system for supporting single-point and global control, each ramp location are equipped with ring road control
Host, video analysis host and semaphore processed are connected by ramp metering rate host between the ring road closed on.Preferably, it closes on
It is connected between two ramp metering rate hosts by Ethernet.
Video analysis host is connect with several video cameras, and video analysis host is obtained related by analysis monitor video
Traffic parameter.In the present embodiment, video camera includes ring road entrance camera and ring road downstream video camera: the camera shooting of ring road entrance
Machine is located at the inlet of ring road, for detecting ring road queue length；Ring road downstream position for video camera is used at the main line of ring road downstream
Detect roadway occupancy.Preferably, video camera is connect by Ethernet with video analysis host.
Video analysis host is connect with ramp metering rate host, and ramp metering rate host obtains current from video analysis host
Traffic parameter, while the traffic parameter of this ring road being distributed to the ramp metering rate host of adjacent ring road, and obtain other ring roads
Traffic parameter.Preferably, video analysis host is connect by Ethernet with ramp metering rate host.
Ramp metering rate host is connect with semaphore, and ramp metering rate host obtains current demand signal instruction period and phase information,
And control-Strategy analysis is carried out according to current demand signal phase and road conditions parameter information, then control signal is issued to semaphore.It is excellent
Choosing, ramp metering rate host is connected by RS-422 interface with semaphore.
Semaphore is connect with several signal lamps, and the information that signal lamp is issued according to semaphore carries out signal and shows.
Preferably, memory module, memory module real-time storage road conditions parameter information and letter are additionally provided in ramp metering rate host
Signal lamp controls information.
Ramp metering rate host uses dynamic single-point control strategy or dynamic global coordination control strategy according to user setting.
During the present invention realizes:
1, monitor camera one is set to ring road inlet, for detecting ring road queue length；One is set to ring road
Downstream main line, for detecting roadway occupancy.
2, monitor camera and video analysis host are connected by Ethernet, and video analysis host passes through analysis monitoring view
Frequently, relevant traffic parameter, including main line occupation rate, ring road queue length etc. are obtained.
3, ramp metering rate host is connected by Ethernet with video analysis host, is obtained currently from video analysis host
Traffic parameter, while the traffic parameter of this ring road is distributed to by adjacent ramp metering rate host by Ethernet, and obtain other circles
The traffic parameter in road.
4, (1) when selecting dynamic single-point control strategy, ramp metering rate host is basic according to dynamic single-point control strategy
Model calculates current metering rate；
The basic model of dynamic single-point control strategy is as follows:
R (k)=r (k-1)+KR[Od-Oout(k-1)] (1)
In formula, r (k) is the metering rate in k-th of control time；R (k-1) is the circle in -1 control time of kth
Road regulation rate；OoutIt (k-1) is -1 control time ring road downstream main line occupation rate of kth；OdFor ring road downstream main line perfect condition
Under occupation rate；KRFor adjustment parameter.
Preferably, adjustment parameter KRValue is 70PCU per hour, at this time available Optimal Control effect.
The present invention uses the basic model of above-mentioned dynamic single-point control strategy, even if KRValue changes system in very large range
System is also able to maintain a good performance, and the robustness of the basic model is preferable.
In the present embodiment, in order to avoid Entrance ramp is because of Hui Yi (spill-back) phenomenon caused by being lined up, according to entrance
The queue length situation of ring road is inhibited and is fed back to metering rate.Inhibition and feedback model are as follows:
max[d(k-1)-(Lmax-L(k))/T,rmin]≤r(k)≤min[d(k-1)+L(k)/T,rmax] (2)
Wherein, d (k-1) is -1 control time ring road vehicle arriving rate of kth；LmaxFor for the maximum allowable queuing vehicle of ring road
Number；L (k) is the initial ring road queuing vehicle number of k-th of control time；T is the time span of each control time；rminAnd rmax
For the experience extreme value of metering rate.
(2) when selecting dynamic global coordination control strategy, ramp metering rate host is according to dynamic global coordination control strategy
Model calculates current metering rate.
Compared with static cost control, local responsive metering has very big flexibility.But since its limit of consideration is only limitted to certain
A ring road is unable to reach the target of system optimal without considering the coordination between each ring road.Therefore in each ring road congestion
Situation is inconsistent, and there are in the case where obvious bottleneck point, the present invention is controlled using dynamic global coordination control strategy.
In dynamic global coordination control strategy: in single-point level, obtaining the tune of each ring road using occupation rate control method
Section rate；Coordinating level, the regulation rate of each ring road is obtained according to flow conservation principle；Later in each ring road, by single-point layer
Two regulation rates comparison that face and coordination level obtain, the regulation rate for taking its small value final as the ring road.
Coordinate level, specific calculating process specifically includes the following steps:
1. detecting and determining main line traffic bottlenecks i.
If certain section, which meets following two condition, thinks occur dynamic traffic bottleneck herein:
O(i,k)≥OC(i) (3)
Qup(i,k)+Qon(i,k)≥Qdown(i,k)+Qoff(i,k) (4)
In formula: O (i, k) is the average occupancy on the section of the downstream section i in a control time；OCIt (i) is the downstream section i
The critical occupation rate of section；Qup(i, k) is the section upstream i section flow in a upper control time；QonWhen (i, k) is upper one control
In section, all Entrance ramp total fluxs within the scope of the i of section；Qdown(i, k) is the section downstream i section in a upper control time
Flow；Qoff(i, k) is the total discharge of all outlet ports ring road within the scope of the i of section in a upper control time.
2., for each bottleneck i, the reduction for calculating each Entrance ramp regulation rate in its upstream is total according to flow conservation principle
Amount, and in its coverage, empirically this reduction amount is assigned to each Entrance ramp associated there by weight.
The coverages of each traffic bottlenecks and weight coefficient according to the space length of upstream entrance ring road to bottleneck road and
Factor of both historical experience OD distribution is preset:
Qre(i, k+1)=[Qup(i,k)+Qon(i,k)]-[Qdown(i,k)+Qoff(i,k)] (5)
Rre(j, i, k+1)=Qre(i,k+1)·Fji·ΣFji (6)
In formula: Qre(i, k+1) is respectively to be associated with Entrance ramp within the scope of bottleneck road i upstream influences to flow into traffic (next
In control time) reduction total amount；Rre(j, i, k+1) is the reduction that the upstream bottleneck road i is associated with that Entrance ramp j flows into traffic
Amount；FjiThe relative weight coefficient of Entrance ramp j is associated with for the upstream bottleneck road i.
3. calculating the coordination level regulation rate of each Entrance ramp j.
The coordination level regulation rate calculation formula of each Entrance ramp j are as follows:
R (j, k+1)=Q (j, k)-maxi[Rre(j,i,k+1)] (7)
In formula: Q (j, k) is the practical influx of Entrance ramp j in a upper control time；R (j, k+1) is next control
In period, the regulation rate of Entrance ramp j.The differentiation of dynamic traffic bottleneck and relative empirical weight are to coordination level tune
The calculated result of section rate has larger impact.
5, ramp metering rate host is connected by RS-422 interface with semaphore, obtains current demand signal instruction period and phase letter
Breath, and according to current metering rate, control signal is issued to signal lamp machine.
6, the information that signal lamp is issued according to semaphore carries out signal and shows.
7, the road conditions parameter information of the memory module meeting current ring road of real-time storage in ramp metering rate host and signal lamp control
Information processed.
The present invention can support the dynamic single-point control strategy using ALINEA algorithm as representative, can also support with
Bottleneck algorithm is the dynamic global coordination control strategy of representative, and signal designation is more stable, accurate, has combined and is
The flexibility of system.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Illustrative description has been carried out to the invention patent above in conjunction with attached drawing, it is clear that the realization of the invention patent not by
The limitation of aforesaid way, if the method concept of the invention patent and the various improvement of technical solution progress are used, or without
It improves and the conception and technical scheme of the invention patent is directly applied into other occasions, be within the scope of the invention.
Claims (10)
1. a kind of ramp control system for supporting single-point and global control, which is characterized in that each ramp location is equipped with ring road control
Host, video analysis host and semaphore processed are connected by the ramp metering rate host between the ring road closed on:
The video analysis host is connect with several video cameras, and the video analysis host is obtained by analysis monitor video
Relevant traffic parameter；
The video analysis host is connect with the ramp metering rate host, and the ramp metering rate host is from the video analysis host
Place obtains current traffic parameter, while the traffic parameter of this ring road being distributed to the ramp metering rate host of adjacent ring road,
And obtain the traffic parameter of other ring roads；
The ramp metering rate host is connect with the semaphore, and the ramp metering rate host obtains current demand signal instruction period and phase
Position information, and control-Strategy analysis is carried out according to current demand signal phase and road conditions parameter information, then issued to the semaphore
Control signal；
The semaphore is connect with several signal lamps, and the signal lamp carries out signal according to the information that the semaphore issues and shows
Show.
2. the ramp control system according to claim 1 for supporting single-point and global control, which is characterized in that the ring road
Memory module, the memory module real-time storage road conditions parameter information and Signalized control information are additionally provided in control host.
3. the ramp control system according to claim 1 for supporting single-point and global control, which is characterized in that the camera shooting
Machine is connect by Ethernet with the video analysis host, and the video analysis host passes through Ethernet and the ramp metering rate master
Machine connection.
4. the ramp control system according to claim 1 for supporting single-point and global control, which is characterized in that the ring road
It controls host and dynamic single-point control strategy or dynamic global coordination control strategy is used according to user setting.
5. the ramp control system according to claim 4 for supporting single-point and global control, which is characterized in that the dynamic
The basic model of single-point control strategy is as follows:
r(k)=r(k-1)+KR[Od-Oout(k-1)]
In formula, r (k) is the metering rate in k-th of control time；
R (k-1) is the metering rate in -1 control time of kth；
OoutIt (k-1) is -1 control time ring road downstream main line occupation rate of kth；
OdFor the occupation rate of ring road downstream main line ideally；
KRFor adjustment parameter.
6. the ramp control system according to claim 4 for supporting single-point and global control, which is characterized in that the dynamic
In global coordination control strategy:
In single-point level, the regulation rate of each ring road is obtained；
Coordinating level, the regulation rate of each ring road is obtained according to flow conservation principle；
In each ring road, two regulation rates that single-point level and coordination level are obtained are compared, take its small value as the ring road most
Whole regulation rate.
7. the ramp control system according to claim 6 for supporting single-point and global control, which is characterized in that in cooperation layer
Face, specific calculating process specifically includes the following steps:
(1) it detects and determines main line traffic bottlenecks i；
(2) the reduction total amount of each Entrance ramp regulation rate in its upstream is calculated for each bottleneck i according to flow conservation principle,
And in its coverage, empirically this reduction amount is assigned to each Entrance ramp associated there by weight；
(3) the coordination level regulation rate of each Entrance ramp j is calculated.
8. the ramp control system according to claim 7 for supporting single-point and global control, which is characterized in that in the step
Suddenly in (1), if certain section meets following two condition and thinks occur dynamic traffic bottleneck herein:
O(i,k)≥OC(i)
Qup(i,k)+Qon(i,k)≥Qdown(i,k)+Qoff(i,k)
In formula: O (i, k) is the average occupancy on the section of the downstream section i in a control time；
OCIt (i) is the critical occupation rate of the downstream section i section；
Qup(i, k) is the section upstream i section flow in a upper control time；
Qon(i, k) is all Entrance ramp total fluxs within the scope of the i of section in a upper control time；
Qdown(i, k) is the section downstream i section flow in a upper control time；
Qoff(i, k) is the total discharge of all outlet ports ring road within the scope of the i of section in a upper control time.
9. the ramp control system according to claim 7 for supporting single-point and global control, which is characterized in that in the step
Suddenly in (2), the coverages of each traffic bottlenecks and weight coefficient according to the space length of upstream entrance ring road to bottleneck road and
Factor of both historical experience OD distribution is preset:
Qre(i,k+1)= [Qup(i,k) + Qon(i,k)] - [Qdown(i,k) + Qoff(i,k)]
Rre(j,i,k+1)= Qre(i,k+1)·Fji·ΣFji
In formula: Qre(i, k+1) is the reduction total amount for being respectively associated with Entrance ramp within the scope of bottleneck road i upstream influences and flowing into traffic；
Rre(j, i, k+1) is the reduction amount that the upstream bottleneck road i is associated with that Entrance ramp j flows into traffic；
FjiThe relative weight coefficient of Entrance ramp j is associated with for the upstream bottleneck road i.
10. the ramp control system according to claim 7 for supporting single-point and global control, which is characterized in that described
In step (3), the coordination level regulation rate calculation formula of each Entrance ramp j are as follows:
r(j,k+1) = Q(j,k) - maxi[Rre(j,i,k+1)]
In formula: Q (j, k) is the practical influx of Entrance ramp j in a upper control time；
R (j, k+1) is the regulation rate of Entrance ramp j in next control time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599078.4A CN109615861A (en) | 2018-12-26 | 2018-12-26 | A kind of ramp control system for supporting single-point and global control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599078.4A CN109615861A (en) | 2018-12-26 | 2018-12-26 | A kind of ramp control system for supporting single-point and global control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109615861A true CN109615861A (en) | 2019-04-12 |
Family
ID=66010624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811599078.4A Withdrawn CN109615861A (en) | 2018-12-26 | 2018-12-26 | A kind of ramp control system for supporting single-point and global control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109615861A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789183A (en) * | 2010-02-10 | 2010-07-28 | 北方工业大学 | Self-adaptive control system and method for entrance ramp |
| CN103700251A (en) * | 2013-11-27 | 2014-04-02 | 东南大学 | Variable speed limiting and ramp control coordination and optimization control method on expressway |
| US8912922B2 (en) * | 2012-06-04 | 2014-12-16 | Global Traffic Technologies, Llc | Field of view traffic signal preemption |
| CN106600991A (en) * | 2017-01-17 | 2017-04-26 | 河北工业大学 | City expressway multi-ramp coordination control method based on chaos |
| CN106781551A (en) * | 2017-03-08 | 2017-05-31 | 东南大学 | Expressway entrance and exit ring road combined control system and method under car networking environment |
| CN107765551A (en) * | 2017-10-25 | 2018-03-06 | 河南理工大学 | A kind of city expressway On-ramp Control method |
| CN108109398A (en) * | 2017-12-28 | 2018-06-01 | 山东易构软件技术股份有限公司 | A kind of overhead expressway Coordinated Ramp Control System and control method |
| CN108510758A (en) * | 2018-05-24 | 2018-09-07 | 金陵科技学院 | City expressway Entrance ramp signal control method based on video real time information |
| CN108648451A (en) * | 2018-05-15 | 2018-10-12 | 北京数行健科技有限公司 | A kind of transport data processing equipment and traffic situation manage system |
| CN108648469A (en) * | 2018-06-13 | 2018-10-12 | 西华大学 | A kind of coordinated ramp metering method based on more bottleneck conditions |
-
2018
- 2018-12-26 CN CN201811599078.4A patent/CN109615861A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789183A (en) * | 2010-02-10 | 2010-07-28 | 北方工业大学 | Self-adaptive control system and method for entrance ramp |
| US8912922B2 (en) * | 2012-06-04 | 2014-12-16 | Global Traffic Technologies, Llc | Field of view traffic signal preemption |
| CN103700251A (en) * | 2013-11-27 | 2014-04-02 | 东南大学 | Variable speed limiting and ramp control coordination and optimization control method on expressway |
| CN106600991A (en) * | 2017-01-17 | 2017-04-26 | 河北工业大学 | City expressway multi-ramp coordination control method based on chaos |
| CN106781551A (en) * | 2017-03-08 | 2017-05-31 | 东南大学 | Expressway entrance and exit ring road combined control system and method under car networking environment |
| CN107765551A (en) * | 2017-10-25 | 2018-03-06 | 河南理工大学 | A kind of city expressway On-ramp Control method |
| CN108109398A (en) * | 2017-12-28 | 2018-06-01 | 山东易构软件技术股份有限公司 | A kind of overhead expressway Coordinated Ramp Control System and control method |
| CN108648451A (en) * | 2018-05-15 | 2018-10-12 | 北京数行健科技有限公司 | A kind of transport data processing equipment and traffic situation manage system |
| CN108510758A (en) * | 2018-05-24 | 2018-09-07 | 金陵科技学院 | City expressway Entrance ramp signal control method based on video real time information |
| CN108648469A (en) * | 2018-06-13 | 2018-10-12 | 西华大学 | A kind of coordinated ramp metering method based on more bottleneck conditions |
Non-Patent Citations (2)
| Title |
|---|
| 张海军，杨晓光，张珏: "高速道路入口匝道控制方法综述", 《同济大学学报(自然科学版)》 * |
| 韩靖: "基于强化学习的城市快速路交织区入口匝道智能控制方法", 《中国优秀硕士学位论文全文数据库（工程科技Ⅱ辑）》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108510758B (en) | Urban expressway entrance ramp signal control method based on video real-time information | |
| CN106384520B (en) | A kind of traffic signal lamp system and its method automatically adjusting traffic lights duration | |
| CN101789183B (en) | Self-adaptive control system and method for entrance ramp | |
| CN105046990B (en) | Pedestrian walkway signals' control method between a kind of adjacent intersection based on particle cluster algorithm | |
| CN105608911B (en) | The intelligent control method of arterial street road traffic signal lamp | |
| CN112885088B (en) | Multi-turn road coordination control method based on dynamic traffic flow | |
| CN108510762B (en) | Optimal control method for intelligent signal lamp in multi-line intersection area of expressway | |
| CN106223257B (en) | A kind of long distance open channel accident section upstream emergency response gate group control method | |
| CN109064754A (en) | A kind of expressway access shunts and flow Collaborative Control technology | |
| CN109637160B (en) | Single-point control method under dynamic traffic condition | |
| CN106530757B (en) | A kind of elevated ramp intelligent signal regulation method | |
| WO2014019461A1 (en) | Arterial traffic light optimization and control method and device | |
| CN108109398A (en) | A kind of overhead expressway Coordinated Ramp Control System and control method | |
| WO2019007126A1 (en) | Mfd and queuing length based road network boundary flow limiting control method under internet of vehicles | |
| US10699568B1 (en) | Video-based crossroad signal machine control method | |
| CN112435473B (en) | Expressway traffic flow tracing and ramp regulating method combined with historical data | |
| CN109661693A (en) | A kind of preferential short high-quality berth Dynamic Pricing method stopped | |
| CN101299298A (en) | Road self-adapting entrance ramp afflux control equipment and method | |
| CN103606284B (en) | A kind of intelligent ring road entrance traffic demand combined control system and method | |
| CN102542801A (en) | Traffic condition prediction system fused with various traffic data and method | |
| CN107730921B (en) | Urban area traffic oversaturation traffic strategy control method | |
| CN108648469B (en) | Ramp coordination control method based on multi-bottleneck condition | |
| CN109410599A (en) | The coordination of expressway ramp lures prosecutor method under a kind of traffic events | |
| CN107123266A (en) | A kind of bottleneck road wagon flow amount adjustment method and device based on traffic big data | |
| CN109686082A (en) | Urban traffic monitoring system based on edge computing nodes and deployment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190412 |
|
| WW01 | Invention patent application withdrawn after publication |