CN108765991A - Signalized intersections anti-locking control system and method - Google Patents
Signalized intersections anti-locking control system and method Download PDFInfo
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- CN108765991A CN108765991A CN201810632098.0A CN201810632098A CN108765991A CN 108765991 A CN108765991 A CN 108765991A CN 201810632098 A CN201810632098 A CN 201810632098A CN 108765991 A CN108765991 A CN 108765991A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
Abstract
The present invention relates to signalized intersections anti-locking control system and methods, and wherein signalized intersections anti-locking control system includes the vehicle detection sensing device being arranged in traffic intersection, and vehicle detection sensing device includes：The information of vehicles that senses of detection is transferred to Signal control Center by high-definition camera, ground induction coil and microwave detecting device, vehicle detection sensing device, and control centre controls the signal lamp group passage of traffic intersection according to signalized intersections situation of being obstructed.Signalized intersections anti-locking control method of the present invention, apparent, larger intersection is changed over time in vehicle flowrate, can greatly promote intersection efficiency, efficiently solves the problems, such as police strength deficiency, also it can more alleviate urban traffic blocking, improve traffic environment.
Description
Technical field
The present invention relates to a kind of traffic control systems, in particular to a kind of signalized intersections anti-locking control system
System and method.
Background technology
With the high speed development of Chinese national economy, urbanization process is constantly accelerated, and motor vehicles rapidly increase, and traffic goes out
Row demand also sharply increases.Urban road network is the carrier of urban traffic flow, and road network passage quality directly determines traffic system
Operational level.Wherein the crucial ring for flowing to distribution and becoming entire road network of road network exchange may be implemented in roadway sign intersection
Section.Signalized intersections signal pipe prosecutor case is the foundation of wagon flow right of way distribution, and specific control model has single-point type control, collaboration control
System and induction control etc..Synchronous signal control program also has lot of research, but these researchs are more with intersection wagon flow
Premised on normal pass condition or unsaturated state.
It is obstructed in a certain exit ramp of hypersaturated state or intersection, it, will if part flows to wagon flow and is being difficult to dissipate in short-term
There can be the vehicle generation of right-of-way to conflict with other imports, simultaneously because driver is rationally current, lacks the consciousness of giving way, occur not
Equidirectional vehicle interts mutually, easily leads to total deadlock inside intersection, to cause intersection and whole region road network
Heavy congestion.Meanwhile the bus or train routes coordination technique such as bus or train route communication, the communication of vehicle vehicle also progresses into reality as informationization technology develops
Application field is trampled, technical support is provided for the fine-grained management of traffic system.
Signalized intersections lock causation analysis：
In urban inner roadway sign intersection, if encountering that flow is excessive or the bursts such as traffic accident are existing during wagon flow is passed through
As, it is difficult to it is driven out to signalized intersections in time in this phase, it will conflict with the generation of other phase wagon flows；Believe in city outside road
Number intersection, oversize vehicle is more, is difficult to be driven out to signalized intersections in time in a phase if turning process is obstructed, equally
It will produce conflicting with each other for out of phase wagon flow.Due to the shortage that driver perceives signalized intersections Global Information, allow simultaneously
Row consciousness is more thin, and right of way contention is inevitable during passage legitimate, and intersection deadlock phenomenon is easy to happen.Class
Topic the following contents causes the deadlock phenomenon under the common two phase place in current demand signal intersection, three phases and Four-phase control pattern
Because of analysis.
Two phase place locks process and reason：
In flow fewer signal intersection generally use Two-phases signal control model, specially east-west direction straight trip, left-hand rotation, the right side
It is a phase to turn current, and it is another phase that North and South direction, which keeps straight on, turns left, turning right,.It is now assumed that it is first phase that east-west direction, which passes through,
It is second phase that North and South direction, which is passed through,.After first phase, if the western straight traffic of east orientation fails in this phase Effective Green Time
Period is driven out to intersection completely, is trapped in inside signalized intersections（As shown in Figure 1）, will after the startup of following north and south phase
It is collected in inside intersection with north and south straight trip and left turning vehicle（As shown in Figure 2）If first phase of letting pass again will make wagon flow
It is unable to operate normally and generates intersection deadlock phenomenon.Similarly, any wagon flow is detained wherein, inside Two-phases signal intersection
It is organic will produce it is locked.If under the premise of finding to be detained vehicle, conflict phase is no longer discharged, although part passage can be reduced
Efficiency, but the extensive congestion that can cause to avoid deadlock phenomenon.
Three phases lock process and reason：
When road intersection has rank difference exclusive or road intersection difference in flow away from larger, three phase controlling of signalized intersections generally use
The straight trip of pattern, specially main flow direction turns left to divide two phase place, and few direction of the traffic is single phase.Wherein, main flow straight trip side
To for first phase, main flow left-hand rotation direction is second phase, and secondary direction of the traffic is third phase.Assuming that east-west direction is mainstream
Direction is measured, North and South direction is time direction of the traffic.After first phase, the locked reason of generation is similar with two phase place, here
It is not described further in detail.After second phase, if east orientation south to without being discharged in time, vehicle is detained inside intersection（Such as Fig. 3 institutes
Show）, will with next phase south orientation north to straight trip and north orientation east turn left wagon flow generation conflict（As shown in Figure 4）If after
It is continuous to be detained, thing straight trip phase is returned to, direction straight traffic enters conflict range eastwards in west（As shown in Figure 5）, signalized intersections
Deadlock phenomenon gradually shows.
Four phases lock process and reason：
When vehicle flowrate equalization is larger, category of intersection roads is without gap, signalized intersections generally use Four-phase control pattern, side
To a straight trip phase, one left turn phase of direction, the straight trip phase of direction two and two left turn phase of direction.It is now assumed that East and West direction straight trip is
It is that third phase, north and south are turned left as the 4th phase that first phase, thing, which are turned left as second phase, north-south straight trip,.?
After one phase, if the western straight traffic of east orientation fails to empty in this phase cycling（As shown in Figure 6）, will in second phase
Northwards left turn traffic mutually conflicts in west（As shown in Figure 7）If continuing to be detained third phase south orientation north and north orientation south wagon flow entering punching
Prominent area（As shown in Figure 8）, intersection deadlock phenomenon gradually shows.Similarly, there is wagon flow retention signal intersection in any phase
Inside is discharged not in time, can form coherent reaction, eventually lead to the generation of signalized intersections deadlock phenomenon.
Invention content
Deficiency in for the above-mentioned prior art, the present invention, which provides one kind, can greatly promote intersection efficiency,
Alleviate urban traffic blocking, improves the signalized intersections anti-locking control system of traffic environment.
The technical solution used in the present invention is：
A kind of signalized intersections anti-locking control system, including be arranged in the vehicle detection sensing device in traffic intersection, vehicle
Detecting sensing device includes：High-definition camera, ground induction coil and microwave detecting device, vehicle detection sensing device incude detection
To information of vehicles be transferred to Signal control Center, situation is obstructed to the signal of traffic intersection according to signalized intersections by control centre
Lamp group passage is controlled.
Preferably, the signalized intersections situation of being obstructed include be obstructed inside signalized intersections with outside signalized intersections by
Resistance.
In any of the above-described scheme preferably, signalized intersections are divided into tetra- regions A, B, C, D；Wherein a-quadrant and B
Region is on the same line；The regions C and the regions D are on the same line；The regions BA vehicle pass-through direction and the regions CD vehicle pass-through
Direction is mutually parallel；The regions A C vehicle pass-through direction is mutually parallel with the regions DB vehicle pass-through direction.
In any of the above-described scheme preferably,
The regions BA vehicle pass-through direction is that vehicle passes through from east orientation west；
The regions CD vehicle pass-through direction is that vehicle passes through from West to East；
The regions A C vehicle pass-through direction is vehicle from north orientation Nantong row；
The regions DB vehicle pass-through direction is that vehicle passes through from south orientation north.
In any of the above-described scheme preferably, a-quadrant hair has vehicle delay, and west is straight, east is left, west is left, the straight signal lamp in south
Group is let pass, other directions of passing through are forbidden.
In any of the above-described scheme preferably, B area has vehicle delay, a western straight, northern left side, Nan Zuo, the straight signal lamp group in north
It lets pass, other directions of passing through are forbidden.
In any of the above-described scheme preferably, there are vehicle delay, an eastern straight, northern left side, Nan Zuo, the straight signal lamp group in south in the regions C
It lets pass, other directions of passing through are forbidden.
In any of the above-described scheme preferably, there is vehicle delay in the regions D, and east is straight, east is left, west is left, the straight signal lamp group in north
It lets pass, other directions of passing through are forbidden.
In any of the above-described scheme preferably, the regions BD have vehicle delay, the straight signal lamp group in north to let pass, other passage sides
To forbidden.
In any of the above-described scheme preferably, the regions DC have vehicle delay, the straight signal lamp group in east to let pass, other passage sides
To forbidden.
In any of the above-described scheme preferably, the regions CA have vehicle delay, the straight signal lamp group in south to let pass, other passage sides
To forbidden.
In any of the above-described scheme preferably, the regions AB have vehicle delay, the straight signal lamp group in west to let pass, other passage sides
To forbidden.
In any of the above-described scheme preferably, be obstructed outside signalized intersections including：West exit has wagon flow delay, east to go out
Mouth has wagon flow to be detained, South Exit has wagon flow to be detained, there is wagon flow delay in north outlet.
In any of the above-described scheme preferably, west exit has a wagon flow delay, the straight signal lamp group in east, southern left signal lamp group,
No through traffic for northern right signal lamp group.
In any of the above-described scheme preferably, there is a vehicle delay in north outlet, the straight signal lamp group in south, western left signal lamp group,
No through traffic for eastern right signal lamp group.
In any of the above-described scheme preferably, east exit has a vehicle delay, the straight signal lamp group in west, northern left signal lamp group,
No through traffic for southern right signal lamp group.
In any of the above-described scheme preferably, South Exit has a vehicle delay, the straight signal lamp group in north, eastern left signal lamp group,
No through traffic for western right signal lamp group.
Situation is obstructed to traffic intersection according to signalized intersections by a kind of signalized intersections anti-locking control method, control centre
Signal lamp group passage controlled, the signalized intersections situation of being obstructed includes being obstructed inside signalized intersections and signalized intersections
It is obstructed outside, it is characterised in that：
The signalized intersections are divided into tetra- regions A, B, C, D；Wherein a-quadrant and B area be on the same line；The regions C and D
Region is on the same line；The regions BA vehicle pass-through direction is mutually parallel with the regions CD vehicle pass-through direction；The regions A C vehicle
Current direction is mutually parallel with the regions DB vehicle pass-through direction；
The regions BA vehicle pass-through direction is that vehicle passes through from east orientation west；
The regions CD vehicle pass-through direction is that vehicle passes through from West to East；
The regions A C vehicle pass-through direction is vehicle from north orientation Nantong row；
The regions DB vehicle pass-through direction is that vehicle passes through from south orientation north；
There is vehicle delay in a-quadrant, and west is straight, east is left, west is left, the straight signal lamp group in south is let pass, other directions of passing through are forbidden；
B area has vehicle delay, and west is straight, a north left side, Nan Zuo, directly signal lamp group is let pass in north, other directions of passing through are forbidden；
There is vehicle delay in the regions C, and east is straight, a north left side, Nan Zuo, directly signal lamp group is let pass in south, other directions of passing through are forbidden；
There is vehicle delay in the regions D, and east is straight, east is left, west is left, the straight signal lamp group in north is let pass, other directions of passing through are forbidden.
The advantageous effect of the present invention compared with the prior art：
Signalized intersections anti-locking control method of the present invention, apparent, larger intersection is changed over time in vehicle flowrate, can
Greatly to promote intersection efficiency, efficiently solves the problems, such as police strength deficiency, also can more alleviate urban traffic blocking,
Improve traffic environment.
Description of the drawings
Fig. 1 is that the Two-phases signal control model of signalized intersections anti-locking control system of the present invention locks generation process
First phase has vehicle to be detained schematic diagram；
Fig. 2 is that the Two-phases signal control model of signalized intersections anti-locking control system of the present invention locks the first of generation process
Phase has vehicle to be detained next phase clearance and occurs locking schematic diagram；
Fig. 3 is that three phase control pattern signals of signalized intersections anti-locking control system of the present invention lock the east orientation of generation process
Southern left turn traffic is detained schematic diagram；
Fig. 4 is that three phase control pattern signals of signalized intersections anti-locking control system of the present invention lock the east orientation of generation process
Southern left turn traffic is detained next phase and starts the schematic diagram that conflicts；
Fig. 5 is that three phase control pattern signals of signalized intersections anti-locking control system of the present invention lock the east orientation of generation process
Southern left turn traffic is detained next phase and starts the deadlock phenomenon generation schematic diagram that conflicts；
Fig. 6 is that four phase signal control models of signalized intersections anti-locking control system of the present invention lock the east orientation of generation process
Western straight traffic is detained schematic diagram；
Fig. 7 is that four phase signal control models of signalized intersections anti-locking control system of the present invention lock the east orientation of generation process
Western straight traffic is detained next phase and enters battleground schematic diagram；
Fig. 8 is that four phase signal control models of signalized intersections anti-locking control system of the present invention lock the east orientation of generation process
The next phase of western straight traffic delay enters battleground conflict and continues to expand schematic diagram；
Fig. 9 is that four phase signal control models of signalized intersections anti-locking control system of the present invention lock the east orientation of generation process
The next phase of western straight traffic delay enters battleground conflict and continues to expand intersection integrally locked schematic diagram；
Figure 10 is three phase signal potential conflict point schematic diagram a of signalized intersections anti-locking control system of the present invention；
Figure 11 is three phase signal potential conflict point schematic diagram b of signalized intersections anti-locking control system of the present invention；
Figure 12 is three phase signal potential conflict point schematic diagram c of signalized intersections anti-locking control system of the present invention；
Figure 13 is the zoning plan that is obstructed of signalized intersections anti-locking control system of the present invention；
Figure 14 is the normal control mode emulation actual effect figure of signalized intersections anti-locking control system of the present invention；
Figure 15 is the anti-locking control model emulation actual effect figure of signalized intersections anti-locking control system of the present invention；
Figure 16 is the delay of normal control mode wagon flow and the flow diagram of signalized intersections anti-locking control system of the present invention；
Figure 17 is the delay of anti-locking control model wagon flow and the flow diagram of signalized intersections anti-locking control system of the present invention.
Specific implementation mode
Referring to the drawings and embodiment the present invention will be described in detail：
Embodiment one
Attached drawing 1-17 is it is found that be a kind of signalized intersections anti-locking control system, including be arranged in the vehicle inspection in traffic intersection
Sensing device is surveyed, vehicle detection sensing device includes：High-definition camera, ground induction coil and microwave detecting device, vehicle detection sense
Answer device that the information of vehicles that senses of detection is transferred to Signal control Center, control centre is obstructed shape according to signalized intersections
Condition controls the signal lamp group passage of traffic intersection.
The signalized intersections situation of being obstructed includes being obstructed to be obstructed with outside signalized intersections inside signalized intersections.
Signalized intersections are divided into tetra- regions A, B, C, D；Wherein a-quadrant and B area be on the same line；The regions C and D
Region is on the same line；The regions BA vehicle pass-through direction is mutually parallel with the regions CD vehicle pass-through direction；The regions A C vehicle
Current direction is mutually parallel with the regions DB vehicle pass-through direction.
The regions BA vehicle pass-through direction is that vehicle passes through from east orientation west；
The regions CD vehicle pass-through direction is that vehicle passes through from West to East；
The regions A C vehicle pass-through direction is vehicle from north orientation Nantong row；
The regions DB vehicle pass-through direction is that vehicle passes through from south orientation north.
A-quadrant hair has vehicle delay, and west is straight, east is left, west is left, the straight signal lamp group in south is let pass, other directions of passing through are forbidden.
B area has vehicle delay, and west is straight, a north left side, Nan Zuo, directly signal lamp group is let pass in north, other directions of passing through are forbidden.
There is vehicle delay in the regions C, and east is straight, a north left side, Nan Zuo, directly signal lamp group is let pass in south, other directions of passing through are forbidden.
There is vehicle delay in the regions D, and east is straight, east is left, west is left, the straight signal lamp group in north is let pass, other directions of passing through are forbidden.
The regions BD have vehicle delay, the straight signal lamp group in north to let pass, other directions of passing through are forbidden.
The regions DC have vehicle delay, the straight signal lamp group in east to let pass, other directions of passing through are forbidden.
The regions CA have vehicle delay, the straight signal lamp group in south to let pass, other directions of passing through are forbidden.
The regions AB have vehicle delay, the straight signal lamp group in west to let pass, other directions of passing through are forbidden.
Be obstructed outside intersection including：West exit has wagon flow to be detained, east exit has wagon flow delay, South Exit to have wagon flow stagnant
It stays, there is wagon flow delay in north outlet.
West exit has wagon flow delay, and the straight signal lamp group in east, southern left signal lamp group, no through traffic for northern right signal lamp group.
There is vehicle delay in north outlet, and the straight signal lamp group in south, western left signal lamp group, no through traffic for eastern right signal lamp group.
East exit has vehicle delay, and the straight signal lamp group in west, northern left signal lamp group, no through traffic for southern right signal lamp group.
South Exit has vehicle delay, and the straight signal lamp group in north, eastern left signal lamp group, no through traffic for western right signal lamp group.
Embodiment two
Such as attached drawing 1-17 it is found that being a kind of signalized intersections anti-locking control method, control centre is obstructed according to signalized intersections
Situation controls the signal lamp group of traffic intersection passage, the signalized intersections situation of being obstructed include inside signalized intersections by
It is obstructed outside resistance and signalized intersections, it is characterised in that：
The signalized intersections are divided into tetra- regions A, B, C, D；Wherein a-quadrant and B area be on the same line；The regions C and D
Region is on the same line；The regions BA vehicle pass-through direction is mutually parallel with the regions CD vehicle pass-through direction；The regions A C vehicle
Current direction is mutually parallel with the regions DB vehicle pass-through direction；
The regions BA vehicle pass-through direction is that vehicle passes through from east orientation west；
The regions CD vehicle pass-through direction is that vehicle passes through from West to East；
The regions A C vehicle pass-through direction is vehicle from north orientation Nantong row；
The regions DB vehicle pass-through direction is that vehicle passes through from south orientation north；
There is vehicle delay in a-quadrant, and west is straight, east is left, west is left, the straight signal lamp group in south is let pass, other directions of passing through are forbidden；
B area has vehicle delay, and west is straight, a north left side, Nan Zuo, directly signal lamp group is let pass in north, other directions of passing through are forbidden；
There is vehicle delay in the regions C, and east is straight, a north left side, Nan Zuo, directly signal lamp group is let pass in south, other directions of passing through are forbidden；
There is vehicle delay in the regions D, and east is straight, east is left, west is left, the straight signal lamp group in north is let pass, other directions of passing through are forbidden.
The advantageous effect of the present invention compared with the prior art：
Signalized intersections anti-locking control method of the present invention, apparent, larger intersection is changed over time in vehicle flowrate, can
Greatly to promote intersection efficiency, efficiently solves the problems, such as police strength deficiency, also can more alleviate urban traffic blocking,
Improve traffic environment.
It understands to be detained if there is vehicle in current phase by analyzing above, exists with this burst of wagon flow in other phases and dive
It is the reason wagon flow for causing intersection locked in the wagon flow that conflict influences.By taking three phase control pattern signals as an example（Such as Fig. 4 institutes
Show）：During the western wagon flow of first phase east orientation is passed through, second phase west is northwards turned left and third phase wagon flow is that its is potential
Conflict point, if grabbing current right of way inside intersection is easy to cause intersection deadlock phenomenon.This works hands over entire signal
Prong flow direction is divided into 8 signal lamp groups（A northern straight, northern left side, Nan Zhi, Nan Zuo, east is straight, east is left, west is straight, left eight flow directions in west）, propose
The control model of its potential conflict wagon flow is cut off, the transit time of part flow direction is sacrificed, it is whole locked to prevent intersection from occurring
The phenomenon that.
Signalized intersections satiate and/or Random event thus cause traffic flow operation to be obstructed usually and be happened inside intersection or go out
At mouth road.This works is according to two kinds of control strategies of block position different designs：
When being obstructed inside signalized intersections, signalized intersections are divided into tetra- quadrants of A, B, C, D, as shown in Figure 5.Different quadrants
Indication of being obstructed needs truncated signal lamp group different, specially：When a-quadrant, hair has a delay, and west is straight, east is left, western left, the straight signal in south
Lamp group can let pass, other answer forbidden；When B area has vehicle delay, west is straight, a north left side, Nan Zuo, directly signal lamp group can be put in north
Row, other answer forbidden；When there is vehicle delay in the regions C, east is straight, a north left side, Nan Zuo, directly signal lamp group can let pass in south, other should prohibit
Row；When there is vehicle delay in the regions D, east is straight, east is left, west is left, north can directly let pass, other answer forbidden；When the regions BD have vehicle stagnant
It stays, the straight signal lamp group in north can let pass, other answer forbidden；When there is vehicle delay in the regions DC, directly signal lamp group can let pass in east,
He answers forbidden；When the regions CA have vehicle delay, the straight signal lamp group in south that can let pass, other answer forbidden；When the regions AB have vehicle stagnant
It stays, the straight signal lamp group in west can let pass, other answer forbidden.
When signalized intersections exit ramp is obstructed, if west exit has wagon flow delay, straight, the southern left signal lamp group in east to forbid leading to
Row；If there is vehicle delay in north outlet, Nan Zhi, no through traffic for western left signal lamp group；If locked, western straight, north occurs for east exit
No through traffic for left signal lamp group；If South Exit occurs to lock, no through traffic for straight, the eastern left signal lamp group in north.
It is used widely with the development bus or train route Collaborative Control of information technology, road traffic stream information is adopted in real time
Collection is then sent to signal controller, realizes that arithmetic for real-time traffic flow passage optimization has not been technical barrier.Specific to anti-locking signal
Control is realized, the roadside devices such as high-definition camera, ground induction coil, microwave detection may be used and be detected, then account for region
There is rate information to be sent to Signal control Center, carries out the optimization of signal control.This works relies on VISSIM emulation platforms, using vehicle
The anti-locking control strategy that is proposed of induction Controlling model simulated implementation, it is specific as follows：
1）Signalized intersections lock process under design simulation normal control mode.Road conditions are：Possess per import track left straight
Right three tracks, lane width 3.5m；Transportation condition is：Traffic composition uses default value, vehicle flowrate for 1500/h；Control
Condition is using timing, Four-phase control scheme, and it is the second phase that north and south straight trip, which is first phase long green light time 20s, north and south is turned left
Position long green light time is 20s, thing straight trip is third phase long green light time 20s, thing left-hand rotation is that the 4th phase long green light time is
A length of 3s when 20s, amber light.
2）Locked control strategy realization is put in design simulation.Road conditions, transportation condition and 1）Unanimously.In control condition,
Using inductive control strategy.Works assume that east orientation south left turn lane has vehicle delay, and signal lamp group is divided into southern straight, south
It is left, north is straight, north is left, west is straight, west is left, east is straight, the left 8 management and control directions in east.It is normal to let pass as eastern straight+west is straight, an east left side+west is left, south
Directly+north is straight, Nan Zuo+north is left, and four phase loops are let pass；Once detect that the left vehicle in east is detained, should be adjusted to eastern left+west it is left,
It is northern straight, east is straight, east it is left+after west is left, north is straight, east is straight ... until the left vehicle in east dissipates, return east it is straight+west is straight, east it is left+west is left, south
Directly+north is straight, the left normal clearance order in Nan Zuo+north.Works realize the control model using Visvap program frames.
In identical simulation time（600s）When, the simulation run state of normal control mode and anti-locking control model is as schemed
Shown in 6, the validity of anti-locking control strategy can be intuitively shown.
By attached drawing 14 as can be seen that under normal control mode, deadlock phenomenon is presented in intersection, enables road
Power substantially reduces, and causes the heavy congestion of intersection and whole region road network.Signalized intersections anti-locking control system of the present invention
Anti-locking control model analogous diagram, as shown in Fig. 15, intersection all directions are unimpeded, in same time, greatly carry
It is high by effective vehicle flowrate, signalized intersections anti-locking control system of the present invention has validity.Attached drawing 16 is it is found that normal
Each flowing to the delay time at stop under control model reaches 550s or more, but complete without result in signalized intersections under control model of the present invention
Full failure, delay time at stop are reduced to 50s hereinafter, having certain actual effect.Attached drawing 17 is it is found that current under normal control mode flow
Amount is 0, completely locked, under control model of the present invention every 10 minutes flows up to 60, greatly improve saturation intersection or with
The dissipation speed and degree of order of signalized intersections under machine emergency conditions effectively avoid intersection that deadlock phenomenon occurs.
Further to quantify effect of optimization, queue length, delay, stream to each flow direction in intersection under the conditions of two schemes
Amount etc. is counted, and comparison is as shown in Figure 7.Under anti-locking control strategy, although there are heavy congestions for part flow direction, not
Having causes signalized intersections entirely ineffective, has certain actual effect.
Traditional signal control may cause under the conditions of wagon flow satiety and/or Random event event because vehicle can not empty
Deadlock phenomenon, this works propose, based on the achievable anti-locking control strategy of technologies such as video identification, coil-induced, signal to be handed over
Prong divides different zones and is monitored, controls 8 lamp groups of signal lamp group division, and the control more refined is excellent
Change, with the dissipation speed and degree of order of signalized intersections under the conditions of raising satiety and/or Random event event, effectively intersection is avoided to send out
Raw " locked " phenomenon.
With intelligent transportation system cutting edge technology --- the development of bus or train route cooperative intelligent control technology, composite communications transport system
System efficiency is improved.Also gradually mature, integrative design intersection system are smart for the technologies such as video identification, infrared ray identification
Refinement will be trend of the times, be applied and change over time apparent, larger intersection in vehicle flowrate, can greatly be carried
Intersection efficiency is risen, police strength deficiency is efficiently solved the problems, such as, also can more alleviate urban traffic blocking, improve traffic ring
Border.
The present invention studies what city signal intersection deadlock phenomenon under improper prevailing state generated from real case
Reason proposes that signalized intersections put locked control strategy, builds the signalized intersections control model based on bus or train route coordination technique,
And application simulation technical modelling deadlock phenomenon confirms that the present invention proposes the feasibility of control strategy.
The above described is only a preferred embodiment of the present invention, not making in any form to the structure of the present invention
Limitation.It is every according to the technical essence of the invention to any simple modification, equivalent change and modification made by above example,
Belong within the scope of technical scheme of the present invention.
Claims (10)
1. a kind of signalized intersections anti-locking control system, including the vehicle detection sensing device in traffic intersection, vehicle are set
Detecting sensing device includes：High-definition camera, ground induction coil and microwave detecting device, vehicle detection sensing device incude detection
To information of vehicles be transferred to Signal control Center, it is characterised in that：Situation is obstructed to handing over according to signalized intersections by control centre
The signal lamp group passage of access mouth is controlled.
2. signalized intersections anti-locking control system according to claim 1, it is characterised in that：Signalized intersections are obstructed situation
It is obstructed with outside signalized intersections including being obstructed inside signalized intersections.
3. signalized intersections anti-locking control system according to claim 2, it is characterised in that：
The signalized intersections are divided into tetra- regions A, B, C, D；Wherein a-quadrant and B area be on the same line；The regions C and D
Region is on the same line；The regions BA vehicle pass-through direction is mutually parallel with the regions CD vehicle pass-through direction；The regions A C vehicle
Current direction is mutually parallel with the regions DB vehicle pass-through direction.
4. signalized intersections anti-locking control system according to claim 3, it is characterised in that：
The regions BA vehicle pass-through direction is that vehicle passes through from east orientation west；
The regions CD vehicle pass-through direction is that vehicle passes through from West to East；
The regions A C vehicle pass-through direction is vehicle from north orientation Nantong row；
The regions DB vehicle pass-through direction is that vehicle passes through from south orientation north.
5. signalized intersections anti-locking control system according to claim 4, it is characterised in that：
There is vehicle delay in a-quadrant, and west is straight, east is left, west is left, the straight signal lamp group in south is let pass, other directions of passing through are forbidden.
6. signalized intersections anti-locking control system according to claim 5, it is characterised in that：
B area has vehicle delay, and west is straight, a north left side, Nan Zuo, directly signal lamp group is let pass in north, other directions of passing through are forbidden.
7. signalized intersections anti-locking control system according to claim 6, it is characterised in that：
There is vehicle delay in the regions C, and east is straight, a north left side, Nan Zuo, directly signal lamp group is let pass in south, other directions of passing through are forbidden.
8. signalized intersections anti-locking control system according to claim 7, it is characterised in that：
There is vehicle delay in the regions D, and east is straight, east is left, west is left, the straight signal lamp group in north is let pass, other directions of passing through are forbidden.
9. signalized intersections anti-locking control system according to claim 4, it is characterised in that：
The regions BD have vehicle delay, the straight signal lamp group in north to let pass, other directions of passing through are forbidden.
10. situation is obstructed to traffic intersection according to signalized intersections by a kind of signalized intersections anti-locking control method, control centre
Signal lamp group passage controlled, the signalized intersections situation of being obstructed includes being obstructed inside signalized intersections and signalized intersections
It is obstructed outside, it is characterised in that：
The signalized intersections are divided into tetra- regions A, B, C, D；Wherein a-quadrant and B area be on the same line；The regions C and D
Region is on the same line；The regions BA vehicle pass-through direction is mutually parallel with the regions CD vehicle pass-through direction；The regions A C vehicle
Current direction is mutually parallel with the regions DB vehicle pass-through direction；
The regions BA vehicle pass-through direction is that vehicle passes through from east orientation west；
The regions CD vehicle pass-through direction is that vehicle passes through from West to East；
The regions A C vehicle pass-through direction is vehicle from north orientation Nantong row；
The regions DB vehicle pass-through direction is that vehicle passes through from south orientation north；
There is vehicle delay in a-quadrant, and west is straight, east is left, west is left, the straight signal lamp group in south is let pass, other directions of passing through are forbidden；
B area has vehicle delay, and west is straight, a north left side, Nan Zuo, directly signal lamp group is let pass in north, other directions of passing through are forbidden；
There is vehicle delay in the regions C, and east is straight, a north left side, Nan Zuo, directly signal lamp group is let pass in south, other directions of passing through are forbidden；
There is vehicle delay in the regions D, and east is straight, east is left, west is left, the straight signal lamp group in north is let pass, other directions of passing through are forbidden.
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