CN101533560A - Method for controlling bus priority - Google Patents
Method for controlling bus priority Download PDFInfo
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- CN101533560A CN101533560A CN200810159599A CN200810159599A CN101533560A CN 101533560 A CN101533560 A CN 101533560A CN 200810159599 A CN200810159599 A CN 200810159599A CN 200810159599 A CN200810159599 A CN 200810159599A CN 101533560 A CN101533560 A CN 101533560A
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Abstract
The invention discloses a method for controlling bus priority. The method comprises the steps of judging a current bus phase, prolonging green time if the current bus phase is a green light, turning on the phase green light of the current bus in advance if the phase before the current bus phase is the green light, and recording the priority request of the current bus phase if the phase of the current bus does not accord with the two situations. After a bus is detected, the method starts a traffic control method with bus priority, or prolongs the green time of the phase of the bus, or turns on the green light of the phase of the bus in advance. Therefore, the method achieves the aim of allowing the bus to have priority to pass a crossing, thereby improving the efficiency of bus operation.
Description
Technical field
The present invention relates to the traffic control field, relate in particular to a kind of public traffic in priority control method.
Background technology
So-called " public traffic in priority " is meant the public transit system of incity, city passenger traffic based on high capacity, fast speed, and other vehicles are auxilliary.Accelerate day by day in rhythm of life, today that the level of urbanization improves constantly, public traffic in priority is quick redirected staff, makes things convenient for the people, alleviates urban road pressure, alleviates the effective way of urban traffic congestion.
From traffic signals control aspect, public traffic in priority just is embodied in the priority pass of crossing public transit vehicle.When bus arrived the crossing, the public transport detecting device sent to teleseme with bus signals, and teleseme real time altering signal timing dial makes bus preferentially pass through the crossing.
Yet, but do not have this kind traffic control method in the prior art.Therefore, just increased the delay time at stop of bus, reduced the operational efficiency and the service quality of bus in the crossing.
Summary of the invention
Technical matters to be solved by this invention is to propose a kind of traffic control method of public traffic in priority.
In order to solve the problems of the technologies described above, the present invention proposes a kind of public traffic in priority control method, comprising: judge current public transport phase place, if current public transport phase place is a green light, then green time is prolonged; If the last phase place of current public transport phase place is a green light, then open current public transport phase place green light bright in advance;
If current public transport phase place does not meet above-mentioned two kinds of situations, then write down the override requests of described current public transport phase place.
Wherein, the step of described green time prolongation comprises:
A, judge the public transport required time whether in the scope of setting, if execution in step b then, otherwise execution in step c;
B, the holding signal timing is constant and finish;
C, the time expand of calculating described current public transport phase place according to the compressible green time of excess phase;
D, if described public transport required time greater than described time expand, then the holding signal timing is constant; Otherwise, determine the green time of described compressible phase place and the green time of described current green light phase place.
Wherein, also comprise after the steps d:
E, the described current public transport phase place of mark are for prolonging.
Further, step a comprises:
Whether judge described public transport required time smaller or equal to its critical green time, if execution in step b then; Otherwise execution in step c.
On the other hand, step a comprises:
A1, whether judge described public transport required time,, otherwise continue to carry out if then the holding signal timing is constant and finish smaller or equal to its critical green time;
A2, whether judge described public transport required time smaller or equal to its basic green time, if, execution in step b then, otherwise execution in step c.
Wherein, step c comprises:
C1, judge that whether next phase place of current public transport phase place is to coordinate phase place,, otherwise continue to carry out if then the holding signal timing is constant and finish;
C2, the time expand of calculating described current public transport phase place according to described current public transport phase place to the compressible green time of the excess phase of described coordination phasetophase.
Concrete, the step of calculating the time expand of described current public transport phase place comprises:
The compressible green time of c21, calculating excess phase;
The compressible time sum of the described excess phase of c22, each semi-ring is as the compressible time of the semi-ring of this semi-ring;
C23, respectively organize in the cycle in the semi-ring of same position, the minimum compressible time sum of semi-ring is as the maximum extension green time;
C24, described maximum extension green time are compared with the maximum green time of described current public transport phase place with the basic green time sum of described current public transport phase place, and smaller value wherein is as described time expand.
Preferably, if the green time of described current public transport phase place does not obtain prolonging, then keep the priority requisition of this current public transport phase place.
Wherein, described current public transport phase place green light opens bright step in advance and comprises:
A1, determine compressible time of green light of the last phase place of described current public transport phase place;
A2, compressible time of more described green light and described current public transport phase place required time, if described current public transport phase place required time is greater than the compressible time of described green light, the green light that then definite compressible time of described green light is described current public transport phase place opens the bright time in advance, otherwise determines that the green light that described current public transport phase place required time is described current public transport phase place opens the bright time in advance;
A3, determine the green time of described phase place and described current public transport phase place through overcompression.
In addition, described steps A 1 comprises:
A1, judge whether described last phase place is positioned at before the phase barrier, if then get the described last phase place of each semi-ring or be in the minimum value of compressible time in the phase place of same position as the compressible time of described green light with this last phase place; Otherwise compressible time of last phase place of getting described current public transport phase place is as the compressible time of described green light.
Among the present invention, because after detecting public transit vehicle, just start the traffic control method of public traffic in priority, perhaps prolong the green time of bus place phase place, perhaps allow the green light of bus place phase place open bright in advance, make bus preferentially by the purpose of crossing thereby reached, improved bus operation efficient.
In addition, owing to the judgement that is provided with the coordination phase place, thereby when carrying out public traffic in priority control, avoided having guaranteed to coordinate the performance of the coordination function of phase place to coordinating the interference of phase place.
And, because when when the prolongation of current public transport phase place fails to realize, the priority requisition of this phase place is carried out record so that when following one-period, open in advance bright, thereby make that the control of public traffic in priority is more perfect.When after the prolongation of current public transport phase place, also prolonged mark, so that follow-up to prolonging the control of number of times, make that the control of public traffic in priority is more perfect.
Description of drawings
Fig. 1 is the workflow diagram of an embodiment of a kind of public traffic in priority control method of the present invention;
Fig. 2 is the workflow diagram of an embodiment of the step that green light prolongs among Fig. 1;
Fig. 3 is the workflow diagram that opens an embodiment of bright step among Fig. 1 in advance;
Fig. 4 is an embodiment synoptic diagram of the phase assignments of an intersection.
Embodiment
At first, briefly set forth principle of the present invention.
Among the present invention, through out-of-date, then trigger the application of public traffic in priority as bus.At this moment, if current public transport phase place is a green light, then enter the step that green light prolongs, if the last phase place of current public transport phase place is a green light, then enters and open bright step in advance, so, just make the intersection of passing through that bus can be preferential, reach the purpose of public traffic in priority.
The present invention will be described in detail below in conjunction with accompanying drawing.
With reference to figure 1, illustrate the workflow diagram of an embodiment of a kind of public traffic in priority control method of the present invention.As shown in the figure, may further comprise the steps:
Step S11 judges whether to trigger the public traffic in priority application, if, execution in step S12 then, otherwise continue to detect.
In this step, can be by in road or road is other that pick-up unit is set, and on whole buses, corresponding intrument is set, through out-of-date, described pick-up unit just can detect described bus as bus.And then the application of triggering public traffic in priority.The phase place at described bus place promptly is the public transport phase place.
In one embodiment of the invention, described pick-up unit can be the coil that is embedded in the road.
Step S12 judges whether current public transport phase place is green light, if, execution in step S14 then, otherwise execution in step S13.
That is, judge whether described bus place phase place (also being the public transport phase place) is green light when bus process check point (position of described pick-up unit is set).
Step S13 judges whether the last phase place of current public transport phase place is green light, if, execution in step S15 then, otherwise execution in step S16.
Step S14, green light prolongs.
That is, the green light with current public transport phase place prolongs so that described bus can pass through the intersection smoothly.The more detailed process of this step can be with reference to embodiment illustrated in fig. 2.
Can proceed after this step finishes to detect, and then the control flow of this public traffic in priority is carried out in circulation.
Step S15 opens bright in advance.
That is, the last phase place of current public transport phase place is a green light, and current public transport phase place is a red light, at this moment, then enter and open bright process in advance, make the green light of described last phase place finish in advance, and that the green light of current public transport phase place opens in advance is bright, so that described bus is in advance by described intersection.
Can proceed after this step finishes to detect, and then the control flow of this public traffic in priority is carried out in circulation.
Step S16 writes down the override requests of current public transport phase place.
Promptly, after triggering public traffic in priority application (request), if current public transport phase place is neither green light, its last phase place neither green light, then can't carry out the operation of public traffic in priority, in following one-period, carry out the processing of public traffic in priority etc. so write down the override requests of current public transport phase place this moment.
Equally, this step finishes also can proceed to detect, and then the control flow of this public traffic in priority is carried out in circulation.
Order that it should be noted that step S12 and follow-up step S14 thereof and step S13 and follow-up step S15 thereof can be exchanged; That is, the judgement judgement of execution in step S12 again that yet can first execution in step S13 is not owing to further set forth at this with present embodiment is basic identical.
With reference to figure 2, illustrate the workflow diagram of an embodiment of the step that green light prolongs among Fig. 1.As shown in the figure, having comprised the coordination phase place in the present embodiment is that example is set forth, and may further comprise the steps:
Whether step S1411 judges the public transport required time less than critical green time, if, execution in step S1421 then, otherwise execution in step S1412.
The bright time of green light when wherein, described public transport required time is a bus through described pick-up unit adds very first time section.This very first time section is a Preset Time, its essence is the running time of the stop line of described bus of pre-estimating from described check point to its intersection, place, this value can be provided with according to the different actual conditions in different regions, and can make amendment at any time to adapt to different situations.
Described critical green time also is the critical green time of described current this phase place of public transport phase place, and it also is a preset value.
Whether step S1412 judges the public transport required time less than basic green time, if, execution in step S1422 then, otherwise execution in step S1413.
Identical among described public transport required time and the step S1411, described basic green time also is the known concept of this area, does not further explain at this.
Step S1413 judges that whether next phase place is to coordinate phase place, if, execution in step S1423 then, otherwise execution in step S1414.
Wherein, described next phase place next phase place that is described current public transport phase place.
Step S1414 judges whether described current public transport phase place is all incompressible to the excess phase of coordinating between the phase place, if, execution in step S1425 then, otherwise execution in step S1415.
That is,, then show current public transport phase place and coordinate to comprise at least one excess phase between the phase place when judging that through step S1413 next phase place is not to coordinate phase place; The purpose of this step just is, judges whether described at least one excess phase can compress (also we can say and cannot compress).Described excess phase just this cycle also do not have the experience phase place.
Wherein, judge whether to compress by judgement and show that the marker bit that whether can compress realizes,, then think and to compress, otherwise can compress if marker bit is 0.
Step S1415 determines the compressible green time of compressible excess phase.
In this step, the time of described compressible green time for having existed, only need from the data of having stored, to read to get final product.
Step S1416 determines the compressible green time of semi-ring of each semi-ring in each ring.
That is, after having determined the compressible green time of each excess phase, and then, just determine the compressible green time of semi-ring of each semi-ring with the compressible green time addition of the excess phase in each semi-ring through step S1415.For example:
With reference to figure 4, illustrate an embodiment synoptic diagram of the phase cycling of an intersection.As shown in the figure, comprise two rings as can be seen, promptly encircle one and the ring two; Each changes and comprises 4 phase places, wherein 41 is depicted as phase barrier.The semi-ring group on phase barrier 41 left sides is semi-ring group X, and the semi-ring group on the right is semi-ring group Y, and semi-ring group X and semi-ring group Y all comprise two semi-rings of ring one and ring two.The semi-ring that semi-ring group X and Y are comprised can think to be in the semi-ring of same position.
Suppose that current public transport phase place is a phase place 1, on phase place 1, bus is through having triggered the control flow of public traffic in priority behind the check point; And hypothesis phase place 4 is for coordinating phase place.At this moment, through step S1414, S1415 obtain phase place 2, phase place 3 and phase place 6, phase place 7 is compressible excess phase, and the compressible green time that has obtained phase place 2 is p, the compressible green time q of phase place 3, the compressible green time m of phase place 6, the compressible green time of phase place 7 is n.
Then among the step S1416, the compressible green time of semi-ring of the semi-ring on phase barrier 41 left sides of ring one is p, and the compressible green time of the semi-ring of the semi-ring on the right is q; The compressible green time of semi-ring of the semi-ring on phase barrier 41 left sides of ring two is m, and the compressible green time of the semi-ring of the semi-ring on the right is n.
Step S1417 determines time expand.
In this step, calculate according to the compressible green time of the semi-ring that obtains in the previous step.In all semi-rings of phase barrier one side, (promptly be in the semi-ring of same position), the minimum value of getting the compressible green time of semi-ring; Equally, also get the minimum value of the compressible green time of semi-ring in all semi-rings of described phase barrier opposite side; With above-mentioned two minimum value additions as the maximum extension green time, this maximum extension green time again with the basic green time addition of described current public transport phase place, the value of gained again with the maximum green time of described current public transport phase place relatively, get its smaller as time expand.
Still be that example is illustrated with Fig. 4:
Suppose p＜m, n＜q; The basic green time of described current public transport phase place is g0, and maximum green time is gm;
The minimum value that obtains the compressible green time of semi-ring of semi-ring group X is p; The minimum value of the compressible green time of semi-ring of semi-ring group Y is n;
Like this, the resulting value of p+n promptly is described maximum extension green time.
Get smaller value between g0+ (p+n) and the gm as time expand.
Whether step S1418 judges the public transport required time greater than described time expand, if, execution in step S1424 then, otherwise execution in step S1419.
The required time of public transport described in this step also is the public transport required time among the step S1411.And, longer by the required time of intersection smoothly if the public transport required time, then shows public transport greater than described time expand, can't be met in the reality; Otherwise, then show and provide time enough to make it pass through the intersection smoothly can in the reality this bus.
Step S1419, definite green time that respectively encircles compression phase and current public transport phase place.
In this step, the described compression phase that respectively encircles that is to say the phase place of having carried out compression in each ring, the just excess phase of determining among the step S1415 that can compress.
The purpose of this step is, when determining can be so that bus smoothly by behind the intersection, just according to aforesaid calculating, be redistributed in each ring the green time through the phase place of overcompression/prolongation.
For excess phase and the corresponding phase place through overcompression of other ring through overcompression between current public transport phase place and the coordination phase place, its concrete compression time is for accounting for the described time expand of proportional distribution that whole compression times that provided are provided for it by the compression time that it provided.When compressible excess phase was crossed over the situation of phase barrier, moving with the compression time distribution in the ring of described current public transport phase place place of phase barrier adjusted.Significantly, the green time of described current public transport phase place is described time expand.
For example, still be example with Fig. 4:
For ring 1, the compression time of phase place 2 is
The compression time of phase place 3 is
Owing to crossed over phase barrier, phase barrier is moving according to the compression time of phase place 3 also.
For ring 2, the compression time of phase place 6 is
The compression time of phase place 7 is then followed moving of described phase barrier 41 and is moved, and also is that the compression time of phase place 7 also is
Step S1420, the record prolongation is labeled as true.
That is, after successfully carrying out the distribution of signal timing dial, then this current public transport phase place of mark has been passed through prolongation.Its purpose is, can add up in the one-period number through the phase place that prolongs, so that the number of times that prolongs is limited, makes the control flexible and controllable of public traffic in priority.
This step finishes back execution in step S1425.
Step S1421, signal timing dial remain unchanged and delete the public transport application.
That is,, then show according to the described bus of existing timing and just can pass through the intersection smoothly, thereby there is no need to prolong, so the holding signal timing is constant when confirming as through step S1411 when being.Owing to there is not described bus to pass through smoothly, the application of public traffic in priority also just there is no need to have handled, thereby has also just deleted the application of public traffic in priority.
This step finishes back execution in step S1425.
Step S1422, record public transport required time.
That is,, show that then described bus side can pass through in the basic green time of this current public transport phase place and the time between the critical green time when confirming as when being through step 1412.For the application of avoiding the public traffic in priority that other phase place produces takies the green time of too much described current public transport phase place, make the green time of described current public transport phase place be not enough to, so carry out record at this by the intersection.
For example, the public transport required time of described current public transport phase place is 20s, and critical green time is 18s, the basis green time is 25s, but then this current public transport phase place provide for other phase places the voltage supply green time that contract be 25-20=5s, for preventing that too much taking of other phase places from causing current public transport phase place not enough, so need to write down the compression time of the maximum that can provide to show.
This step finishes back execution in step S1425.
Step S1423, signal timing dial remain unchanged and write down the public traffic in priority application.
That is, when next phase place when coordinating phase place need realize the function coordinated owing to coordinate phase place, thus its time be unmodifiable, thereby this moment, the holding signal timing was constant.And the purpose of record public traffic in priority application then is, can realize opening in advance bright in following one-period.
This step finishes back execution in step S1425.
Step S1424, signal timing dial is constant, writes down current public transport phase place prolongation and is labeled as vacation and keeps its priority requisition.
That is,, show that then time that actual institute can provide can not satisfy bus and pass through the intersection smoothly, thereby also just can't prolong when confirming as through step S1418 when being.So the holding signal timing is constant.Record prolongs and to be labeled as vacation, and then expression prolongs, and its purpose also is to be convenient to add up prolonging number of times, makes the control flexible and controllable of public traffic in priority.And the purpose that keeps its priority requisition then is, though the green light of being unrealized prolong, but still might in following one-period, realize opening in advance bright, so carry out mark to open bright processing in advance in following one-period.
This step finishes back execution in step S1425.
Step S1425 finishes.
With reference to figure 3, illustrate the workflow diagram of an embodiment who opens bright step among Fig. 1 in advance.As shown in the figure, may further comprise the steps:
Step S1511, whether the last phase place of judging current public transport phase place is phase place before the barrier, if, execution in step S1516 then, otherwise execution in step S1512.
Wherein, described barrier is the meaning of phase barrier.The purpose that this step is established this judgement is, owing to need open bright in advance to current public transport phase place, just need its last phase place is compressed, if described last phase place is the words of phase place before the barrier, then because barrier needs parallel moving, thereby just need to consider the compressed capability that side all and described last phase place are in the phase place of same position that changes of barrier.The elaboration of details please see below.
Step S1512 determines that it is the compressible time of green light that the described compressible time of last phase place is encircled at the public transport place.
Promptly, when judge through previous step described last phase place be not barrier before during phase place, then be exactly after barrier, thereby can not relate to moving of barrier, also just needn't consider the situation of the respective phase of other ring, and only need with compressible time of described last phase place directly as the compressible time of green light.
Whether step S1513 judges the public transport required time greater than the compressible time of described green light, if, execution in step S1515 then, otherwise execution in step S1514.
Wherein, the implication of described public transport required time is:
When bus through just triggering the flow process of public traffic in priority behind the pick-up unit, also have travel time of this segment distance of a segment distance, described bus to be described public transport required time between the stop line from pick-up unit to intersection, the place ahead.In actual applications, generally adopt estimated value during this period of time, promptly set this value according to actual conditions in advance, and in application, can make amendment as required to satisfy different actual conditions.
Step S1514, last phase place compression time is the public transport required time.
The green light of the just described current public transport phase place of the compression time of described last phase place opens the bright time in advance; Pass through the intersection required time owing to having satisfied public transport by smooth, thereby described last phase place just can be compressed according to described public transport required time through the previous step identification compressible time of green light.
This step finishes back execution in step S1520.
Step S1515, last phase place compression time are the compressible time of green light.
The green light of the just described current public transport phase place of the compression time of described last phase place opens the bright time in advance; Pass through the intersection required time smoothly owing to can't satisfy public transport through the previous step identification compressible time of green light, but in order to make described bus to reduce down time as much as possible, still to as much as possible it be opened bright a period of time in advance (but still will stop a period of time), just with last phase place compression a period of time.And the maximal value of this section period of compression is the compressible time of described green light, thereby the compression time of described last phase place is set to the compressible time of described green light in this step.
This step finishes back execution in step S1520.
Step S1516 determines respectively to encircle the minimum value of preceding compressible time of phase place of barrier as the compressible time of green light.
Because the last phase place of current public transport phase place is positioned at before the barrier, thereby its compression not only will be considered the compressed capability of last phase place described in this ring, also to consider to be positioned in other ring the compressed capability of the phase place of barrier homonymy, to guarantee parallel the moving of barrier.
So the minimum value of getting the compressible time in the phase place (being close to the phase place of other ring of barrier homonymy equally) corresponding in described last phase place and other ring is as the compressible time of described green light.
For example:
Equally with reference to figure 4 (the represented intension of Fig. 4 this moment is different with previous embodiment), in the present embodiment, phase place 3 is current public transport phase place, 41 are similarly barrier (phase barrier), and phase place 2 is the last phase place that is in the described current public transport phase place in the same ring (ring one) with described current public transport phase place.
The compressible time of supposing phase place 2 is M, and the compressible time of phase place 6 is N (and M〉N), and then getting N is the compressible time of described green light.
Whether step S1517 judges the public transport required time greater than the compressible time of described green light, if, execution in step S1519 then, otherwise execution in step S1518.
Wherein, described public transport required time defined time among the step S1513 just.
Step S1518, last phase place compression time is the public transport required time.
That is, confirm that through step S1517 the compressible time of green light can satisfy public transport smoothly by after the required time, just with the compression time of described last phase place as the public transport required time.Opening in advance the bright time of the just described current public transport phase place of the compression time of described last phase place.
This step finishes back execution in step S1520.
Step S1519, last phase place compression time are the compressible time of described green light.
That is, confirm that through step S1517 the compressible time of described green light can't satisfy public transport smoothly by the intersection after the required time, then expression can not be compressed according to the public transport required time.And, in order to make bus as much as possible, reduce down time fast by the intersection, then need the compression of carrying out maximum possible, the maximum just described compressible time of green light of compressed value to described last phase place.Thereby last phase place compression time is set to the compressible time of green light in this step.
The compression time of described last phase place that is to say opening in advance the bright time of described current public transport phase place.
Step S1520 determines the green time of each ring through the phase place and the current public transport phase place of overcompression.
Wherein, for process step S1519 flow process so far, in this step, with the compressible time of determined green light in corresponding phase (being close to the phase place of other ring of the barrier homonymy equally) compression step 1516 of described last phase place and other ring, promptly after the basis of former green time, deduct the compressible time of described green light; And concerning described current public transport phase place, then before the basis of its current green time, add the compressible time of the above green light.Like this, barrier has just realized translation left.
For process step S1518 flow process so far, in this step, with public transport required time described in corresponding phase (being close to the phase place of other ring of barrier homonymy equally) the compression step S1517 of described last phase place and other ring, promptly after the basis of former green time, deduct described public transport required time; And concerning described current public transport phase place, then before the basis of its current green time, add the above public transport required time.Like this, barrier has also realized translation left.
For through step S1514 flow process so far, in this step,, promptly after the basis of former green time, deduct described public transport required time with public transport required time described in the described last phase place compression step S1513; And concerning described current public transport phase place, then before the basis of its current green time, add the above public transport required time.Like this, barrier does not move yet.
For through step S1515 flow process so far, in this step,, promptly after the basis of former green time, deduct the compressible time of described green light with the compressible time of green light described in the described last phase place compression step S1512; And concerning described current public transport phase place, then before the basis of its current green time, add the compressible time of the above green light.Like this, barrier does not move yet.
For instance, be example still with the example among the step S1516.
For process step S1519 flow process so far, phase place 2 and phase place 6 compression time N add time N before phase place 3 and the phase place 7.
For crossing step S1518 flow process so far, phase place 2 and phase place 6 compression public transport required times add the public transport required time before phase place 3 and the phase place 7.
For remaining situation, since comparatively simple, do not illustrate one by one at this.
Step S1521 finishes.
Need to prove, this embodiment has only been set forth and has been comprised the situation of coordinating phase place, for not comprising the situation of coordinating phase place because more simple, thereby further do not set forth at this, those of ordinary skills can not spend creative work reasoning on the basis of the foregoing description and obtain.
Above disclosed is a kind of preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (10)
1, a kind of public traffic in priority control method comprises: judge current public transport phase place, if current public transport phase place is a green light, then green time is prolonged; If the last phase place of current public transport phase place is a green light, then open current public transport phase place green light bright in advance;
If current public transport phase place does not meet above-mentioned two kinds of situations, then write down the override requests of described current public transport phase place.
2, method according to claim 1 is characterized in that, the step that described green time prolongs comprises:
A, judge the public transport required time whether in the scope of setting, if execution in step b then, otherwise execution in step c;
B, the holding signal timing is constant and finish;
C, the time expand of calculating described current public transport phase place according to the compressible green time of excess phase;
D, if described public transport required time greater than described time expand, then the holding signal timing is constant; Otherwise, determine the green time of described compressible phase place and the green time of described current green light phase place.
3, method according to claim 2 is characterized in that, also comprises after the steps d:
E, the described current public transport phase place of mark are for prolonging.
4, method according to claim 2 is characterized in that, step a comprises:
Whether judge described public transport required time smaller or equal to its critical green time, if execution in step b then; Otherwise execution in step c.
5, method according to claim 2 is characterized in that, step a comprises:
A1, whether judge described public transport required time,, otherwise continue to carry out if then the holding signal timing is constant and finish smaller or equal to its critical green time;
A2, whether judge described public transport required time smaller or equal to its basic green time, if, execution in step b then, otherwise execution in step c.
6, method according to claim 2 is characterized in that, step c comprises:
C1, judge that whether next phase place of current public transport phase place is to coordinate phase place,, otherwise continue to carry out if then the holding signal timing is constant and finish;
C2, the time expand of calculating described current public transport phase place according to described current public transport phase place to the compressible green time of the excess phase of described coordination phasetophase.
7, according to each described method in the claim 2 to 6, it is characterized in that the step of calculating the time expand of described current public transport phase place comprises:
The compressible green time of c21, calculating excess phase;
The compressible green time sum of the described excess phase of c22, each semi-ring is as the compressible green time of the semi-ring of this semi-ring;
C23, respectively organize in the semi-ring of same position, the minimum compressible green time sum of semi-ring is as the maximum extension green time;
C24, described maximum extension green time are compared with the maximum green time of described current public transport phase place with the basic green time sum of described current public transport phase place, and smaller value wherein is as described time expand.
8, according to each described method in the claim 2 to 6, it is characterized in that,, then write down the priority requisition of this current public transport phase place if the green time of described current public transport phase place does not obtain prolonging.
9, method according to claim 1 is characterized in that, described current public transport phase place green light opens bright step in advance and comprises:
A1, determine compressible time of green light of the last phase place of described current public transport phase place;
A2, compressible time of more described green light and described current public transport phase place required time, if described current public transport phase place required time is greater than the compressible time of described green light, the green light that then definite compressible time of described green light is described current public transport phase place opens the bright time in advance, otherwise determines that the green light that described current public transport phase place required time is described current public transport phase place opens the bright time in advance;
A3, determine the green time of described phase place and described current public transport phase place through overcompression.
10, method according to claim 9 is characterized in that, described steps A 1 comprises:
A1, judge whether described last phase place is positioned at before the phase barrier, if then get the described last phase place of each semi-ring or be in the minimum value of compressible time in the phase place of same position as the compressible time of described green light with this last phase place; Otherwise compressible time of last phase place of getting described current public transport phase place is as the compressible time of described green light.
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| CN200810159599A CN101533560A (en) | 2008-11-28 | 2008-11-28 | Method for controlling bus priority |
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| CN102254444A (en) * | 2011-08-30 | 2011-11-23 | 青岛海信网络科技股份有限公司 | Phase insertion type bus signal priority control method |
| CN101739830B (en) * | 2009-12-31 | 2011-12-21 | 浙江工业大学 | Lane change time division multiplex method for guaranteeing priorities of buses |
| CN102646338A (en) * | 2012-04-27 | 2012-08-22 | 同济大学 | Priority control method for bus signal based on green light demand |
| CN103531032A (en) * | 2013-10-28 | 2014-01-22 | 东南大学 | Method for carrying out real-time control on two-phase signal under condition of multi-bus priority application for intersection |
| CN104464313A (en) * | 2014-12-17 | 2015-03-25 | 南京莱斯信息技术股份有限公司 | Traffic signal countdown adjusting method in process of implementing public transport priority |
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| CN104933874A (en) * | 2015-06-16 | 2015-09-23 | 青岛海信网络科技股份有限公司 | Traffic light self-adaptive control method and device |
| CN104933874B (en) * | 2015-06-16 | 2017-08-25 | 青岛海信网络科技股份有限公司 | A kind of traffic lights self-adaptation control method and device |
| CN105303851A (en) * | 2015-10-09 | 2016-02-03 | 上海市城市建设设计研究总院 | Signal priority control system for bus cluster specialized lane and method thereof |
| CN106683452A (en) * | 2017-01-16 | 2017-05-17 | 青岛海信网络科技股份有限公司 | Public transport priority control method and device |
| CN107293134A (en) * | 2017-06-19 | 2017-10-24 | 东南大学 | Bus signals priority acccess control strategy based on virtual electronic fence |
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