CN108074405A - A kind of road traffic signal control method, apparatus and system - Google Patents
A kind of road traffic signal control method, apparatus and system Download PDFInfo
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- CN108074405A CN108074405A CN201611009917.3A CN201611009917A CN108074405A CN 108074405 A CN108074405 A CN 108074405A CN 201611009917 A CN201611009917 A CN 201611009917A CN 108074405 A CN108074405 A CN 108074405A
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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
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Abstract
The embodiment of the present invention discloses a kind of road traffic signal control method, apparatus and system, is related to road traffic signal control field, and the traffic efficiency to improve the unbalanced crossing of the magnitude of traffic flow is invented.The described method includes：Receive the current request that the detection device on each current direction is sent, according to predetermined clearance order, judge whether first current direction behind the current direction let pass has current request, if do not have, then continue to judge successively whether second behind the current direction let pass have current request to n-th direction of passing through, until judging there is the current direction of current request；At the end of the current direction clearance let pass, according to predetermined clearance order, the current direction of not current request is skipped, is release status by next traffic light system having on the current current direction asked.Described device includes the module for performing above-mentioned steps.The present invention is adapted to the road traffic signal control of the unbalanced intersection of the magnitude of traffic flow.
Description
Technical field
The present invention relates to road traffic signal control field more particularly to a kind of road traffic signal control method, devices
And system.
Background technology
It is found by investigation statistics, urban road is connected with each other and forms the urban road plane friendship of road traffic net
Cross road mouth is that wagon flow interruption, accident is caused to increase, be delayed where the problem of serious, is the bottleneck of Urban Transportation.It is general and
Speech, the traffic capacity of intersection will be less than the traffic capacity in section, therefore how utilize traffic signalization guarantee crossroad
Mouthful traffic safety and give full play to the traffic efficiency of intersection and cause the highest attention of people.
Traffic signalization refers to, using traffic lights, command the vehicle and pedestrian run on road.Traffic
Signal control can also be described as：Changed by the light color for rationally controlling belisha beacon, reach reduction traffic congestion and block,
Ensure the purpose of urban road is unobstructed and avoids that traffic accident occurs.
Separated place (mainly on level-crossing) can not be spatially realized, in order to avoid different directions traffic
Conflicting with each other between stream, can be by giving the traffic flow in each current direction to distribute corresponding right-of-way in time.For example,
In order to let pass transmeridional straight traffic and avoid simultaneously the straight trip in north-south, left turn traffic and its clash, can pass through
The transmeridional green straight trip arrow lamps of Qi Liang assign the right-of-way at crossing to East and West direction straight traffic, and the red light for opening bright north-south disappears
The influence passed through except north-south straight trip, left turn traffic to East and West direction straight traffic.
One road traffic signal control program has several current directions in one cycle, then can claim the signal controlling party
Case controls for the signal in several current directions.One current direction can have the friendship not conflicted mutually that is several while obtaining right-of-way
It is through-flow.The dispaly state of signal lamp on one current direction, can be referred to as signal phase, referred to as phase.
Current direction is to weigh change in one cycle according to intersection to divide.Pass through the current direction of difference
Between switching, corresponding right-of-way can be distributed to each current direction traffic flow in time.For an intersection
Multiple current directions, be properly termed as main current direction for the larger current direction of traffic flow, other current directions are referred to as auxiliary
Current direction.
One crossing is controlled and should be determined by the actual traffic stream situation at the crossing using the signal in several current directions, cross
2~4 current directions of crossing generally use.Fig. 1 is the current side of the current direction signals control of a use four in the prior art
To schematic diagram.The first current direction in Fig. 1 corresponds to a transmeridional current direction, which has two
A traffic flow not conflicted mutually, i.e., the traffic flow kept straight on from east to west and the traffic flow kept straight on from west to east.According to Fig. 1, if working as
The current direction of preceding clearance is the first current direction, i.e., the traffic light system green light on the first current direction, then current to pass through
It keeps straight on for thing in direction；After the first current direction, which is let pass, terminates to be switched to the second current direction, i.e., on the second current direction
Traffic light system green light, then direction of passing through become transmeridional left-hand rotation by thing straight trip.
Existing road traffic signal control method is according to predetermined clearance order, carries out successively between current direction
Switching, to distribute corresponding right-of-way to each current direction traffic flow in time.This method has the following problems：For
Vehicle flowrate is big on the very unbalanced crossing of flow, such as main current direction, even if auxiliary current direction please without vehicles or pedestrians
It asks by can also give the auxiliary current minimum green time of direction clearance one, this creates the terminal the wastes of transit time.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of road traffic signal control method, apparatus and system, can improve
The traffic efficiency at the unbalanced crossing of the magnitude of traffic flow.
In a first aspect, the embodiment of the present invention provides a kind of road traffic signal control method, including：
Receive the current request that the detection device on each current direction of road junction is sent；
Judge the current request whether from the current direction let pass；
If the current request is not from the current direction let pass, the current request is recorded in described
Current request from current direction under；
According to predetermined clearance order, it is current to judge whether first current direction behind the current direction let pass has
Request；
If the not current request in first current direction behind the current direction let pass, continues successively to judge just
Whether second behind the current direction of clearance have current request to n-th direction of passing through, until judging there is current request
Current direction；Wherein N=pass through direction sum -1；
At the end of letting pass in the current direction let pass, according to the predetermined clearance order, current ask is skipped
Next traffic light system having on the current current direction asked is release status by the current direction asked.
With reference to first aspect, in the first embodiment of first aspect, the method further includes：
If all current directions behind the current direction let pass are without current request, current what is let pass
At the end of direction is let pass, the traffic light system for continuing to control the current direction let pass is release status.
With reference to first aspect, in second of embodiment of first aspect, knot of letting pass in the current direction let pass
Shu Shi according to the predetermined clearance order, skips the current direction of not current request, has the logical of current request by next
Traffic light system on line direction is after release status, the road traffic signal control method further includes：
The number in the accumulative current direction for skipping not current request；
Whether the number for skipping the not current current direction asked for judging to add up is more than the threshold value set, if
What is added up skips the threshold value of the number more than setting in the current direction of not current request, then from the current direction let pass
Start, control the signal lamp in each current direction behind the current direction let pass successively according to the predetermined clearance order
For release status and continue the first preset time.
With reference to first aspect, in the third embodiment of first aspect, knot of letting pass in the current direction let pass
Shu Shi according to the predetermined clearance order, skips the current direction of not current request, has the logical of current request by next
Traffic light system on line direction is before release status, the road traffic signal control method further includes：Judge
Whether second behind the current direction let pass have and represent the current request passed through of special car to n-th direction of passing through；
Wherein, it is described at the end of the clearance of the current direction let pass, according to the predetermined clearance order, skip not
There is the current direction for request of passing through, be release status by next traffic light system having on the current current direction asked, wrap
It includes：If second behind the current direction let pass has the current request that represents that special car passes through to n-th direction of passing through,
At the end of then letting pass in the current direction let pass, according to the predetermined clearance order, the logical of not current request is skipped
Line direction will have and represent that the traffic light system on the current direction of current request that special car passes through is release status.
The third embodiment with reference to first aspect, in the 4th kind of embodiment of first aspect, the judgement is just
Whether second behind the current direction of clearance have the current request that represents that special car passes through, bag to n-th direction of passing through
It includes：
Judge whether second behind the current direction let pass have comprising the logical of predetermined mark to n-th direction of passing through
Row request；Wherein, the predetermined mark represents special car；
If second behind the current direction let pass pass through that direction has to n-th please comprising the current of predetermined mark
It asks, it is determined that second behind the current direction let pass to n-th direction of passing through, which has, represents that special car passes through current
Request.
With reference to first aspect and first aspect the first to the 4th kind of embodiment, in the 5th kind of implementation of first aspect
In mode, in the road traffic signal control method, if the current request is from the current direction let pass,
Then judge the traffic light system in the current direction let pass adds second time window as whether the run time of release status is in；Its
In, described plus second time window is the predetermined amount of time before terminating of letting pass；
If the traffic light system in the current direction let pass is in described plus second for the run time of release status
Between in window, then the run time that the traffic light system is release status is controlled to extend the second preset time.
Second aspect, the embodiment of the present invention provide a kind of road traffic signal control device, including：
Receiving module, for receiving the current request of the transmission of the detection device on each current direction of road junction；
First judgment module, for judging the current request whether from the current direction let pass；
Logging modle, will be described current if being not from the current direction let pass for the current request
Request be recorded in it is described it is current request from current direction under；
Second judgment module, for according to predetermined clearance order, judging first behind the current direction let pass
Whether current direction has current request；If the not current request in first current direction behind the current direction let pass,
Then continue to judge successively whether second behind the current direction let pass have current request to n-th direction of passing through, until
Judge there is the current direction of current request；Wherein N=pass through direction sum -1；
Handover module at the end of letting pass in the current direction let pass, according to the predetermined clearance order, is jumped
The current direction without current request is crossed, is clearance shape by next traffic light system having on the current current direction asked
State.
With reference to second aspect, in the first embodiment of second aspect, the handover module, if be additionally operable to
All current directions behind the current direction let pass are asked without current, at the end of letting pass in the current direction let pass,
The traffic light system for continuing to control the current direction let pass is release status.
With reference to second aspect, in second of embodiment of second aspect, the road traffic signal control device,
It further includes：
Counting module, for the number in the accumulative current direction for skipping not current request；
3rd judgment module, for the number for skipping the not current current direction asked that judges add up whether be more than
The threshold value of setting；
Wherein, the handover module, if being additionally operable to time in the added up current direction for skipping not current request
Number then since the current direction let pass, according to the clearance order is controlled and put more than the threshold value of setting successively
The signal lamp in each current direction behind capable current direction is release status and continues the first preset time.
With reference to second aspect, in the third embodiment of second aspect, the road traffic signal control device,
It further includes：
4th judgment module：For judge second behind the current direction let pass to n-th pass through direction whether
There is the current request for representing that special car passes through；
Wherein, the handover module, if second be additionally operable to behind the current direction let pass is passed through direction to n-th
There is the current request for representing that special car passes through, then at the end of letting pass in the current direction let pass, according to described predetermined
Clearance order skips the current direction of not current request, will have the current direction for the current request for representing that special car passes through
On traffic light system be release status.
With reference to second aspect, in the 4th kind of embodiment of second aspect, the 4th judgment module, specifically for sentencing
Whether second behind the disconnected current direction let pass have the current request that includes predetermined mark to n-th direction of passing through；Its
In, the predetermined mark represents special car；If second behind the current direction let pass has bag to n-th direction of passing through
Current request containing predetermined mark, it is determined that there is expression in second behind the current direction let pass to n-th direction of passing through
The current request that special car passes through.
With reference to any one of the first of second aspect and second aspect to the 4th kind of embodiment embodiment,
In 5th kind of embodiment of two aspects, the road traffic signal control device further includes：
5th judgment module if being from the current direction let pass for the current request, judges
Whether the traffic light system in the current direction let pass is in for the run time of release status plus second time window；Wherein, it is described to add
Second time window is the predetermined amount of time before terminating of letting pass；
Add a second processing module, if the traffic light system in the current direction for letting pass is the operation of release status
Between in described plus second time window, then control the run time that the traffic light system is release status extend second it is default when
Between.
The third aspect, the embodiment of the present invention provide a kind of road traffic signal control system, and described including detection device
The signal control device that detection device is connected, the signal lamp being connected with the signal control device；Wherein, the detection device,
It is arranged on each current direction, whether has pedestrian and/or vehicle on each current direction for detecting, when having detected pedestrian
And/or during vehicle, current request is sent to the signal control device；The signal lamp fills for being controlled according to the signal
The corresponding traffic signals of control signal progress for putting output are shown；Wherein, the signal control device is foregoing any embodiment party
Road traffic signal control device described in formula.
A kind of road traffic signal control method provided in an embodiment of the present invention, apparatus and system are logical what is let pass
Before line direction clearance terminates, according to predetermined clearance order, first current direction behind the current direction let pass is judged
Whether have current request, if the current request in first current direction behind the current direction let pass, continue according to
Whether secondary second judged behind the current direction let pass has current request to n-th direction of passing through, until judging have
The current direction of current request；At the end of letting pass in the current direction let pass, not current request need not be led to again
The minimum green time of line direction clearance one, but according to predetermined clearance sequentially, the current direction of not current request is skipped,
It is release status by next traffic light system having on the current current direction asked, thus, it is possible to improve magnitude of traffic flow unevenness
The traffic efficiency at weighing apparatus crossing.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a current direction signal controlled using four current direction signals in the prior art；
Fig. 2 is the flow diagram of road traffic signal control method embodiment one of the present invention；
Fig. 3 is the flow diagram of road traffic signal control method embodiment two of the present invention；
Fig. 4 is the flow diagram of road traffic signal control method embodiment three of the present invention；
Fig. 5 is the block diagram of road traffic signal control device embodiment one of the present invention；
Fig. 6 is the block diagram of road traffic signal control device embodiment two of the present invention；
Fig. 7 is the block diagram of road traffic signal control device embodiment three of the present invention；
Fig. 8 is the structure diagram of road traffic signal control system embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
It will be appreciated that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
Its embodiment, belongs to the scope of protection of the invention.
Embodiment one
Fig. 2 is the flow diagram of road traffic signal control method embodiment one of the present invention, as shown in Fig. 2, this implementation
The method of example can include：
Step 101 receives the current request that the detection device on each current direction of road junction is sent.
The embodiment of the present invention can be applied to road traffic signal control system.The road traffic signal control system is main
Including detection device, signal control device and signal lamp.Wherein, the detection device may be arranged on each current direction, use
In detecting on each current direction whether have pedestrian and vehicle in real time, when detecting on some current direction there is pedestrian and/or vehicle
, then current request being sent to signal control device, the signal control device receives the current request, and according to described logical
Row request controls the in due course switching in current direction, i.e. reed time controll passes through the dispaly state of the signal lamp on direction, realizes friendship
The traffic signalization of cross road mouth.
The detection device can be camera, the image or video of pedestrian and vehicle be absorbed by camera, according to camera shooting
The image content that head is absorbed determines whether pedestrian or vehicle；It can also be radar detedtor, obtain time of pedestrian and vehicle
Ripple signal；It can also be the electromagnetic coil being embedded under road surface, the presence of pedestrian or vehicle perceived according to electromagnetic induction principle.
Whether step 102 judges the current request from the current direction let pass.
Contain in the present embodiment, in the current request and pass through the information in direction from which, such as containing being come from
Detection device ID (Identification) information, may determine that the current request whether from letting pass accordingly
Current direction.
Step 103, by it is described it is current request be recorded in it is described it is current request from current direction under.
It, please by described pass through if the current request is not from the current direction let pass in the present embodiment
Ask be recorded in it is described it is current request from current direction under.
The method of the current request of record has very much, for example, the electrical form that a N row 2 arranges can be built, N is equal to current side
To quantity, i.e. a current direction corresponds to a line.First is classified as current direction sequence number, and second to be classified as each current direction corresponding
Flag bit state indicates and represents that there is current request in corresponding current direction for 1；Indicate and represent that corresponding current direction does not have for 0
Current request.
Whether first current direction behind the current direction that step 104, judgement are being let pass has current request.
In the present embodiment, according to predetermined clearance order, first behind the current direction let pass current side is judged
To whether having current request.
Wherein, the current direction let pass refers to the current direction that current signal lamp state is signal lamp；It is putting
First current direction behind capable current direction refers to according to predetermined clearance order, behind the current direction let pass
The adjacent current direction in face and the current direction with letting pass；Predetermined clearance order refers on different current directions
Traffic light system be green light order.
Predetermined clearance order may have a phase-sequence meter.The phase-sequence meter is a form in the current direction of storage,
All current directions in a clearance cycle are housed in order.Different crossing phase-sequence meters is also different, for example, standard
Crossroad each let pass the cycle include 4 current directions, as shown in Figure 1, be respectively：Thing is kept straight on, and thing turns left, and north and south is straight
Row, north and south are turned left.This is a kind of simplest phase-sequence meter, and some phase-sequence meters may also include the right-hand rotation of all directions, also more multiple
Miscellaneous phase-sequence meter, is not listed one by one here.
In this step, the current direction let pass can be judged according to the record of step 103 and predetermined clearance order
Whether first current direction afterwards has current request.
Second behind step 105, the current direction let pass of judgement to n-th pass through direction whether have it is current please
It asks.
In the present embodiment, if the not current request in first current direction behind the current direction let pass, after
Whether continuous second judged successively behind the current direction let pass has current request to n-th direction of passing through, until judging
Going out has the current direction of current request；Wherein N=pass through direction sum -1.
In the present embodiment, it can put in order according to direction of passing through in phase-sequence meter, behind the current direction let pass
First current direction starts, and determines each whether current direction has current request successively；If some current direction is not logical
Row request, then judge whether next current direction has current request.Specifically, if behind the current direction let pass
The not current request in first current direction, judges whether there there be current second current direction behind the current direction let pass
Request.If second current direction also without current request, continues to judge next current direction.
Step 106, the current direction for skipping not current request, by next letter having on the current current direction asked
Signal lamp is shown as release status.
In the present embodiment, at the end of letting pass in the current direction let pass, according to predetermined clearance order, skipping does not have
Next traffic light system having on the current current direction asked is release status by the current direction of current request.Wherein,
The current direction let pass refers to the signal timing on the current direction let pass at the end of letting pass at the end of.This implementation
In example, traffic light system represents release status for green light phase, is shown as red light phase and represents no through traffic state.
For example, referring to shown in Fig. 1, in a crossroad using four current direction signal control, it is logical to share first
Four line direction, the second current direction, third passage direction and four-way line direction current directions.Clearance order in a cycle
It is followed successively by the first current direction, the second current direction, third passage direction and four-way line direction.If that currently lets pass is current
Direction is the first current direction, and the detection device being arranged on the second current direction has not detected pedestrian and/or vehicle, because
This does not send current request, and the detection device being arranged on third passage direction and four-way line direction has detected row
People and/or vehicle have issued current request；The current request for sending the detection device on third passage direction is needed to remember at this time
Under third passage direction, the current request that the detection device on four-way line direction is sent is recorded in four-way line direction for record
Under；At the end of letting pass in the first current direction, the current direction of clearance is directly switched to third passage direction, i.e., is led to first
Traffic light system on line direction is amber light or red light phase, is green light phase by the traffic light system on third passage direction.
In the present embodiment, the current direction that can skip not current request carries out switching between current direction, i.e., just
At the end of letting pass in the current direction of clearance, need not let pass to the current direction of current request a minimum green light when
Between, but according to predetermined clearance order, the current direction of not current request is skipped, has the current of current request by next
Traffic light system on direction is release status, and thus, it is possible to improve the traffic efficiency at the unbalanced crossing of the magnitude of traffic flow.
Embodiment two
Fig. 3 is the flow diagram of road traffic signal control method embodiment two of the present invention, as shown in figure 3, this implementation
The method of example can include：
Step 201 receives the current request that the detection device on each current direction of road junction is sent.
In the present embodiment, the process and the above method of the current request that the detection device on each current direction is sent are received
The step 101 of embodiment is similar, and details are not described herein again.
Whether step 202 judges the current request from the current direction let pass.
In the present embodiment, judge it is described it is current request whether process and the above method from the current direction let pass
The step 102 of embodiment is similar, and details are not described herein again.
In the present embodiment, if the current request is from the current direction let pass, step 203 is performed, otherwise
Perform step 205.
Whether the green light actual run time in the current direction that step 203, judgement are being let pass is in plus second time window.
In the present embodiment, if the current request is from the current direction let pass, judge what is let pass
Whether the green light actual run time in current direction is in plus second time window.
Wherein, described plus second time window refers to that current direction is let pass a period before terminating.The period can be
The green light in current direction terminate before n-th second reciprocal to N-M second this periods reciprocal, for example be the green light knot in direction of passing through
Inverse the 9th second before beam is to the 6th second this period reciprocal.
The green light actual run time in the current direction let pass can be the green of the current direction let pass
Lamp time actual motion terminate to green light before which reciprocal second, such as actual motion terminate to green light before inverse the 8th second.
In the present embodiment, if described plus second time window terminate for green light before inverse 9th second to the 6th second this time of inverse
Section, the green light actual run time in the current direction let pass terminate for green light before inverse the 8th second, then can determine just
Green light actual run time in the current direction of clearance is in plus second time window.
If described plus second time window terminate for green light before inverse 9th second to the 6th second this period of inverse, it is described
The green light actual run time in the current direction let pass is the inverse the 10th second or 5th second reciprocal before green light terminates, then can determine
The green light actual run time in the current direction let pass is not on plus second time window.
Step 204 controls the run time that the traffic light system is release status to extend the second preset time.
In the present embodiment, the run time that the traffic light system is release status is controlled to extend the second preset time and is referred to
Increase preset several seconds on the basis of current residual green time, for example often increase once increase by 3 seconds or 5 seconds etc..
The green time after the second is added to be not more than maximum green time.
In the present embodiment, if the green light actual run time in the current direction let pass is in described plus second time window
It is interior, then the run time that the traffic light system is release status is controlled to extend the second preset time, in order to pedestrian and/or vehicle
Pass through crossing before green light terminates.
Step 205, by it is described it is current request be recorded in it is described it is current request from current direction under.
In the present embodiment, by it is described it is current request be recorded in it is described it is current request from current direction under process and
The step 103 of above method embodiment is similar, and details are not described herein again.
Whether first current direction behind the current direction that step 206, judgement are being let pass has current request.
In the present embodiment, judge whether first current direction behind the current direction let pass has the mistake of current request
Journey is similar with the step 104 of above method embodiment, and details are not described herein again.
In the present embodiment, if there is current request in first current direction behind the current direction let pass, perform
Step 207, step 208 is otherwise performed.
Step 207, the current direction of next clearance is switched to first behind the current direction let pass it is current
On direction.
Second behind step 208, the current direction let pass of judgement to n-th pass through direction whether have it is current please
It asks.
In the present embodiment, judge second behind the current direction let pass to n-th pass through direction whether have it is current
The process of request is similar with the step 105 of above method embodiment, and details are not described herein again.
In the present embodiment, through judgement, if second behind the current direction let pass pass through direction to n-th in certain
There is current request in a current direction such as second current direction, then performs step 209.If the institute behind the current direction let pass
There is current direction without current request, at the end of letting pass in the current direction let pass, to continue letting pass described in control
Current direction traffic light system be release status.
Step 209, the current direction for skipping not current request, by next letter having on the current current direction asked
Signal lamp is shown as release status.
In the present embodiment, the current direction of not current request is skipped, is had next on the current current direction asked
Traffic light system for release status process it is similar with the step 106 of above method embodiment, details are not described herein again.
Step 210, the number in the accumulative current direction for skipping not current request.
In the present embodiment, often skip once without the current direction of current request, i.e., lead to skipping not current request
The number of line direction adds up once.
Whether what step 211, judgement added up skips the number in the current direction of not current request more than the threshold set
Value.
In the present embodiment, the threshold value can be set according to actual needs, such as setting 3 times or 5 inferior.
Step 212 controls each current direction behind the current direction let pass according to predetermined clearance order successively
Signal lamp for release status and continue the first preset time.
In the present embodiment, if the number in the added up current direction for skipping not current request is more than the threshold of setting
Value, then since the current direction let pass, after controlling the current direction let pass successively according to predetermined clearance order
Each current direction signal lamp release status and to continue the first preset time, restart accumulative skip afterwards and do not lead to
The number in the current direction of row request.Wherein, first preset time can be preset minimum green time or maximum
Any time between green time or minimum green time and maximum green time.
The present embodiment is primarily directed to situations below or analogue, for example, passing through at some on direction, if some rows
For people not by regulation station to pedestrian's waiting area (effective detection zone of detection device), such detection device cannot perceive pedestrian
Presence, it is impossible to send current request, therefore, the current direction will be skipped when current direction switches, is i.e. the direction of passing through
It will not be cleared, these people would not also be cleared.For this purpose, set a threshold value, such as 5 times, when current direction redirect it is secondary
After number reaches 5 times, then the clearance successively in each current direction is carried out once, is thus avoided that the pedestrian's meeting being not detected
Unlimitedly etc. stay.
Embodiment three
Fig. 4 is the flow diagram of road traffic signal control method embodiment three of the present invention, as shown in figure 4, this implementation
The method of example can include：
Step 301 receives the current request that the detection device on each current direction of road junction is sent.
In the present embodiment, the process and the above method of the current request that the detection device on each current direction is sent are received
The step 101 of embodiment is similar, and details are not described herein again.
Whether step 302 judges the current request from the current direction let pass.
In the present embodiment, judge it is described it is current request whether process and the above method from the current direction let pass
The step 102 of embodiment is similar, and details are not described herein again.
Step 303, by it is described it is current request be recorded in it is described it is current request from current direction under.
In the present embodiment, by it is described it is current request be recorded in it is described it is current request from current direction under process and
The step 103 of above method embodiment is similar, and details are not described herein again.
Whether first current direction behind the current direction that step 304, judgement are being let pass has current request.
In the present embodiment, judge whether first current direction behind the current direction let pass has the mistake of current request
Journey is similar with the step 104 of above method embodiment, and details are not described herein again.
In the present embodiment, if there is current request in first current direction behind the current direction let pass, perform
Step 305, step 307 is otherwise performed.
Whether the current request in first current direction behind the current direction that step 305, judgement are being let pass represents
The current request of special car.
In the present embodiment, it can determine whether first current direction behind the current direction let pass has comprising pre- calibration
The current request known；Wherein, the predetermined mark represents special car.If first behind the current direction let pass is current
There is the current request for including predetermined mark in direction, it is determined that there is expression in first current direction behind the current direction let pass
The current request that special car passes through.
In the present embodiment, if the current request in first current direction behind the current direction let pass is to represent special
The current request of vehicle, then perform step 306, otherwise performs step 307.
Step 306, the current direction of next clearance is switched to first behind the current direction let pass it is current
Direction.
Second behind step 307, the current direction let pass of judgement to n-th pass through direction whether have it is current please
It asks.
In the present embodiment, judge second behind the current direction let pass to n-th pass through direction whether have it is current
The process of request is similar with the step 105 of above method embodiment, and details are not described herein again.
In the present embodiment, if second behind the current direction let pass pass through direction to n-th in have current request,
Then perform step 308；If all current directions behind the current direction let pass are being let pass without current request
Current direction let pass at the end of, the traffic light system for continuing control the current direction let pass is release status.
Whether second behind step 308, the current direction let pass of judgement have and represent special to n-th direction of passing through
The current request of vehicle pass-through.
In the present embodiment, according to the judgement of step 307, if second behind the current direction let pass leads to n-th
Line direction has current request, then determine whether second behind the current direction let pass to n-th pass through direction whether
There is the current request for representing that special car passes through.
In the present embodiment, it can determine whether second behind the current direction let pass have bag to n-th direction of passing through
Current request containing predetermined mark；Wherein, the predetermined mark represents special car；If behind the current direction let pass
Two have the current request that includes predetermined mark to n-th direction of passing through, it is determined that second behind the current direction let pass
It is a to have and represent the current request passed through of special car to n-th direction of passing through.
In the present embodiment, if second behind the current direction let pass has and represents special vehicle to n-th direction of passing through
Current current request, then perform step 309；If second behind the current direction let pass passes through direction to n-th
There is current request, but the current request passed through without representing special car, then perform step 310.
Step 309, the current direction for skipping not current request represent the logical of current request that special car passes through by having
Traffic light system on line direction is release status.
In the present embodiment, if second behind the current direction let pass has and represents special vehicle to n-th direction of passing through
Current current request, then at the end of letting pass in the current direction let pass, according to predetermined clearance order, skipping does not have
The current direction of current request, the traffic light system on current direction that will have the current request for representing that special car passes through is puts
Row state can so ensure the priority pass of the special cars such as bus, police car, ambulance, fire engine.
In the present embodiment, the license plate number of vehicle on the corresponding current direction in each current direction can be detected by detection device
Code, audio warning signal and/or blinker signal, judge whether there is special car in the current direction, if there is special car,
Then send the clearance request containing predetermined mark.The number-plate number therein can be by gathering vision signal and carrying out at image
Reason, Text region obtain, and sound or optical signal identification also belong to the prior art, are not described in detail here.
Step 310, the current direction for skipping not current request, by next letter having on the current current direction asked
Signal lamp is shown as release status.
In the present embodiment, the current direction of not current request is skipped, is had next on the current current direction asked
Traffic light system for release status process it is similar with the step 106 of above method embodiment, details are not described herein again.
Step 311, the number in the accumulative current direction for skipping not current request.
In the present embodiment, often skip once without the current direction of current request, i.e., lead to skipping not current request
The number of line direction adds up once.
Whether what step 312, judgement added up skips the number in the current direction of not current request more than the threshold set
Value.
In the present embodiment, the threshold value can be set according to actual needs, such as setting 3 times or 5 inferior.
Step 313 controls each current direction behind the current direction let pass according to predetermined clearance order successively
Signal lamp for release status and continue the first preset time.
In the present embodiment, each current side behind the current direction let pass is controlled successively according to predetermined clearance order
To signal lamp for release status and continue the first preset time process it is similar with the step 212 of above method embodiment, this
Place repeats no more.
The step 203 of previous embodiment two judges the green light actual motion in current direction let pass to step 204
Whether the time, which is in, adds second time window and carries out that the process of second processing is added to can also be applied to the present embodiment.
Example IV
Fig. 5 is the block diagram of road traffic signal control device embodiment one of the present invention, as shown in figure 5, the present embodiment
Device can include：Receiving module 11, the first judgment module 12, logging modle 13, the second judgment module 14 and handover module 15；
Wherein,
The receiving module 11, for receiving the current of the transmission of the detection device on each current direction of road junction
Request；
First judgment module 12, for judging the current request whether from the current direction let pass；
The logging modle 13, if the current direction let pass is not from for the current request, by institute
State current request be recorded in the current request from current direction under；
Second judgment module 14, for according to predetermined clearance order, after judging the current direction let pass
Whether first current direction has current request；If first current direction behind the current direction let pass be not current
Request, then continue to judge successively whether second behind the current direction let pass have current request to n-th direction of passing through,
Until judge there is the current direction of current request；Wherein N=pass through direction sum -1；
The handover module 15, at the end of letting pass in the current direction let pass, according to predetermined clearance sequentially,
The current direction of not current request is skipped, is clearance shape by next traffic light system having on the current current direction asked
State.
The device of the present embodiment can be used for the technical solution for performing embodiment of the method shown in Fig. 2, realization principle and skill
Art effect is similar, and details are not described herein again.
Embodiment five
Fig. 6 is the block diagram of road traffic signal control device embodiment two of the present invention, as shown in fig. 6, the present embodiment
Device on the basis of example IV described device structure,
The handover module 15, if being additionally operable to all current directions behind the current direction let pass without current
Request, at the end of letting pass in the current direction let pass, the signal lamp for continuing the current direction let pass described in control is shown
It is shown as release status.
Optionally, the described device of the present embodiment may also include：16 and the 3rd judgment module 17 of counting module；Wherein, count
Digital-to-analogue block 16, for the number in the accumulative current direction for skipping not current request；3rd judgment module 17, for judging to tire out
Whether the number in the current direction for skipping not current request of meter is more than the threshold value set；Wherein, the handover module 15, also
If for the threshold value that the number in the added up current direction for skipping not current request is more than setting, from letting pass
Current direction start, control each current direction behind the current direction let pass successively according to predetermined clearance order
Signal lamp is release status and continues the first preset time.Wherein, first preset time can be that preset minimum is green
Any time between lamp time or maximum green time or minimum green time and maximum green time.
Optionally, the described device of the present embodiment may also include：5th judgment module 18 and plus second processing module 19；Its
In, the 5th judgment module 18 if being from the current direction let pass for the current request, judges letting pass
Current direction green light actual run time whether in plus second time window；Wherein, described plus second time window terminates to let pass
A preceding predetermined amount of time；Add second processing module 19, if for the green light actual run time in the current direction let pass
In described plus second time window, then when controlling the traffic light system default for the run time extension second of release status
Between.
The device of the present embodiment can be used for the technical solution for performing embodiment of the method shown in Fig. 3, realization principle and skill
Art effect is similar, and details are not described herein again.
Embodiment six
Fig. 7 is the block diagram of road traffic signal control device embodiment three of the present invention, as shown in fig. 7, the present embodiment
Device is on the basis of example IV described device structure, the handover module 15, it may also be used for if that is letting pass is current
At the end of letting pass in the current direction let pass, continue to control institute without current request in all current directions behind direction
The traffic light system for stating the current direction let pass is release status.
Optionally, the described device of the present embodiment may also include：16 and the 3rd judgment module 17 of counting module；Wherein, institute
Counting module 16 is stated, for the number in the accumulative current direction for skipping not current request；3rd judgment module 17, is used for
Whether judge to add up skips the number in the current direction of not current request more than the threshold value set；Wherein, the switching
Module 15, if being additionally operable to the threshold value that the number in the added up current direction for skipping not current request is more than setting,
Since the current direction let pass, controlled successively according to predetermined clearance order each behind the current direction let pass
The signal lamp in current direction is release status and continues the first preset time.Wherein, first preset time can be to set in advance
During any between fixed minimum green time or maximum green time or minimum green time and maximum green time
Between.
Optionally, the described device of the present embodiment may also include：4th judgment module 20；Wherein, the described 4th judges mould
Whether block 20 has for judging second behind the current direction let pass to n-th direction of passing through and represents that special car leads to
Whether capable current request, being particularly used in second after judging the current direction let pass has to n-th direction of passing through
Current request comprising predetermined mark；Wherein, the predetermined mark represents special car；If behind the current direction let pass
Second has the current request that includes predetermined mark to n-th direction of passing through, it is determined that the behind the current direction let pass
Two have and represent the current request passed through of special car to n-th direction of passing through.
Wherein, the handover module 15, if second be additionally operable to behind the current direction let pass to the n-th side of passing through
To the current request for thering is expression special car to pass through, then at the end of letting pass in the current direction let pass, put according to predetermined
Row order skips the current direction of not current request, on the current direction that will have the current request for representing that special car passes through
Traffic light system be release status.
The device of the present embodiment can be used for the technical solution for performing embodiment of the method shown in Fig. 4, realization principle and skill
Art effect is similar, and details are not described herein again.
The 5th judgment module 18 in above-described embodiment five and add second processing module 19, can also be applied in the present embodiment,
For whether carrying out adding second processing to the current clearance time.
Embodiment seven
Fig. 8 is the structure diagram of road traffic signal control system embodiment of the present invention, as shown in figure 8,
The present embodiment road traffic signal control system, including detection device 31, the signal being connected with the detection device
Control device 32, the signal lamp 33 being connected with the signal control device；Wherein, the detection device 31 is arranged on each logical
On line direction, whether there are pedestrian and/or vehicle on each current direction for detecting, when having detected pedestrian and/or vehicle,
Current request is sent to the signal control device；The signal lamp 33, for the control exported according to the signal control device
Signal processed carries out corresponding traffic signals and shows；Wherein, the signal control device 32 is described in any one of foregoing embodiment
Road traffic signal control device.
Wherein, the detection device 31 may be arranged on each current direction, for detecting each current direction in real time
Whether there are pedestrian and vehicle, when detecting on some current direction there is pedestrian and/or vehicle, then sent to signal control device logical
Row request, the signal control device receives the current request, and controls the suitable of current direction according to the current request
When switch, i.e. the dispaly state of reed time controll signal lamp realizes traffic signalization.
The detection device 31 can be camera, and the image or video of pedestrian and vehicle are absorbed by camera, according to taking the photograph
The image content absorbed as head determines whether pedestrian or vehicle；It can also be radar detedtor, obtain pedestrian and vehicle
Echo-signal；It can also be the electromagnetic coil being embedded under road surface, the presence of pedestrian or vehicle perceived according to electromagnetic induction principle.
The present embodiment road traffic signal control system, need not be again at the end of letting pass in the current direction let pass
To the minimum green time of current direction clearance one of not current request, but according to predetermined clearance order, skipping does not have
Next traffic light system having on the current current direction asked is release status, thus by the current direction of current request
The traffic efficiency at the unbalanced crossing of the magnitude of traffic flow can be improved.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all should by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (13)
1. a kind of road traffic signal control method, which is characterized in that including：
Receive the current request that the detection device on each current direction of road junction is sent；
Judge the current request whether from the current direction let pass；
If the current request is not from the current direction let pass, the current request is recorded in described current
Request from current direction under；
According to predetermined clearance order, judge whether first current direction behind the current direction let pass has current ask
It asks；
If the not current request in first current direction behind the current direction let pass, continues to judge putting successively
Whether second behind capable current direction have current request to n-th direction of passing through, until judging there be the logical of current request
Line direction；Wherein N=pass through direction sum -1；
At the end of letting pass in the current direction let pass, according to the predetermined clearance order, not current request is skipped
Next traffic light system having on the current current direction asked is release status by current direction.
2. road traffic signal control method according to claim 1, which is characterized in that further include：
If all current directions behind the current direction let pass are without current request, in the current direction let pass
At the end of clearance, the traffic light system for continuing to control the current direction let pass is release status.
3. road traffic signal control method according to claim 1, which is characterized in that in the current direction let pass
At the end of clearance, according to the predetermined clearance order, the current direction of not current request is skipped, has current ask by next
The traffic light system on current direction asked is after release status, the road traffic signal control method further includes：
The number in the accumulative current direction for skipping not current request；
Whether it is more than the threshold value set that judge to add up skips the number in the not current current direction asked, if tired out
The number in the current direction for skipping not current request of meter is more than the threshold value of setting, then is opened from the current direction let pass
Begin, the signal lamp for controlling each current direction behind the current direction let pass successively according to the predetermined clearance order is
Release status and continue the first preset time.
4. road traffic signal control method according to claim 1, which is characterized in that in the current direction let pass
At the end of clearance, according to the predetermined clearance order, the current direction of not current request is skipped, has current ask by next
Before the traffic light system on current direction asked is release status, the road traffic signal control method further includes：Sentence
Whether second behind the disconnected current direction let pass have represent that special car passes through current please to n-th direction of passing through
It asks；
Wherein, it is described at the end of the clearance of the current direction let pass, according to the predetermined clearance order, skip and do not lead to
Next traffic light system having on the current current direction asked is release status by the current direction of row request, including：If
Second behind the current direction let pass has the current request that represents that special car passes through to n-th direction of passing through, then exists
At the end of the current direction let pass is let pass, according to the predetermined clearance order, the current side for skipping not current request
To will have and represent that the traffic light system on the current direction of current request that special car passes through is release status.
5. road traffic signal control method according to claim 4, which is characterized in that the judgement is being let pass logical
Whether second after line direction have the current request that represents that special car passes through to n-th direction of passing through, including：
Judge second behind the current direction let pass pass through whether direction have to n-th please comprising the current of predetermined mark
It asks；Wherein, the predetermined mark represents special car；
If second behind the current direction let pass has the current request that includes predetermined mark to n-th direction of passing through,
Determining second behind the current direction let pass has the current request that represents that special car passes through to n-th direction of passing through.
6. road traffic signal control method according to any one of claims 1 to 5, which is characterized in that if described logical
Row request is then to judge the traffic light system in the current direction let pass as release status from the current direction let pass
Run time whether in plus second time window；Wherein, described plus second time window is the predetermined amount of time before terminating of letting pass；
If the traffic light system in the current direction let pass is in described plus second time window for the run time of release status
It is interior, then the run time that the traffic light system is release status is controlled to extend the second preset time.
7. a kind of road traffic signal control device, which is characterized in that including：
Receiving module, for receiving the current request of the transmission of the detection device on each current direction of road junction；
First judgment module, for judging the current request whether from the current direction let pass；
Logging modle, if the current direction let pass is not from for the current request, by the current request
Be recorded in it is described it is current request from current direction under；
Second judgment module, for according to predetermined clearance order, judging that first behind the current direction let pass is passed through
Whether direction has current request；If the not current request in first current direction behind the current direction let pass, after
Whether continuous second judged successively behind the current direction let pass has current request to n-th direction of passing through, until judging
Going out has the current direction of current request；Wherein N=pass through direction sum -1；
Handover module at the end of letting pass in the current direction let pass, according to the predetermined clearance order, is skipped not
There is the current direction of current request, be release status by next traffic light system having on the current current direction asked.
The direction-control apparatus 8. road traffic signal according to claim 7 passes through, which is characterized in that the switching mould
Block is logical what is let pass if being additionally operable to all current directions behind the current direction let pass without current request
At the end of line direction is let pass, the traffic light system for continuing to control the current direction let pass is release status.
9. road traffic signal control device according to claim 7, which is characterized in that further include：
Counting module, for the number in the accumulative current direction for skipping not current request；
3rd judgment module, whether the number in the current direction for skipping not current request for judging to add up is more than setting
Threshold value；
Wherein, the handover module, if the number being additionally operable in the added up current direction for skipping not current request surpasses
The threshold value of setting is crossed, then since the current direction let pass, controls what is let pass successively according to predetermined clearance order
The signal lamp in each current direction behind current direction is release status and continues the first preset time.
10. road traffic signal control device according to claim 7, which is characterized in that further include：4th judges mould
Block：Whether have for judging second behind the current direction let pass to n-th direction of passing through and represent that special car passes through
Current request；
Wherein, the handover module, if second be additionally operable to behind the current direction let pass has table to n-th direction of passing through
Show the current request that special car passes through, then at the end of letting pass in the current direction let pass, according to the predetermined clearance
Sequentially, the current direction of not current request is skipped, on the current direction that there will be the current request for representing that special car passes through
Traffic light system is release status.
11. road traffic signal control device according to claim 7, which is characterized in that the 4th judgment module, tool
Whether body has for judging second behind the current direction let pass to n-th direction of passing through comprising the current of predetermined mark
Request；Wherein, the predetermined mark represents special car；If second behind the current direction let pass passes through to n-th
There is the current request for including predetermined mark in direction, it is determined that second behind the current direction let pass to the n-th side of passing through
To the current request for thering is expression special car to pass through.
12. according to claim 7 to 11 any one of them road traffic signal control device, which is characterized in that further include：
5th judgment module if being from the current direction let pass for the current request, judges letting pass
Current direction traffic light system for release status run time whether in plus second time window；Wherein, during the described plus second
Between window for let pass terminate before a predetermined amount of time；
Add a second processing module, if the traffic light system in the current direction for letting pass is at the run time of release status
Extend the second preset time in described plus second time window, then controlling the run time that the traffic light system is release status.
13. a kind of road traffic signal control system, which is characterized in that including detection device, be connected with the detection device
Signal control device, the signal lamp being connected with the signal control device；Wherein,
The detection device is arranged on each current direction, whether has pedestrian and/or vehicle on each current direction for detecting
, when having detected pedestrian and/or vehicle, current request is sent to the signal control device；
The signal lamp, the control signal for being exported according to the signal control device carry out corresponding traffic signals and show；
Wherein, the signal control device is preceding claims 7-12 any one of them road traffic signal control devices.
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| CN109461315A (en) * | 2018-12-27 | 2019-03-12 | 湖南数格信息科技有限公司 | A kind of sensing type Intelligent road-cross traffic system |
| CN110853346A (en) * | 2019-10-11 | 2020-02-28 | 长沙理工大学 | Traffic flow control method and system for intersection |
| CN110853346B (en) * | 2019-10-11 | 2022-01-28 | 长沙理工大学 | Traffic flow control method and system for intersection |
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Application publication date: 20180525 |