CN104281738A - Evaluation system and method for trunk line coordination control scheme of trunk line road - Google Patents
Evaluation system and method for trunk line coordination control scheme of trunk line road Download PDFInfo
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- CN104281738A CN104281738A CN201410385475.7A CN201410385475A CN104281738A CN 104281738 A CN104281738 A CN 104281738A CN 201410385475 A CN201410385475 A CN 201410385475A CN 104281738 A CN104281738 A CN 104281738A
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Abstract
The invention discloses an evaluation system and method for a trunk line coordination control scheme of a trunk line road. The method comprises the following steps that according to geometrical condition data of each trunk line road section and each coordination intersection of a trunk line road to be evaluated, the trunk line road is drawn in a simulation system interface according to the set proportion; signal lights of each coordination intersection are displayed in the simulation system interface according to the real-time signal releasing state of each coordination intersection; for each testing path preset in the trunk line road, according to the real-time signal release state of each coordination intersection relevant to the testing path and the real-time operation speed of each trunk line road sections, a testing vehicle is controlled to run in the testing path, and the traveling time of the testing vehicle in the testing path is detected; according to the detected traveling time and the expected traveling time of the testing vehicle in each test path, the control effect of the current trunk line coordination control scheme of the trunk line road is evaluated. When the evaluation system and the evaluation method are applied, the evaluation accuracy can be improved.
Description
Technical field
The present invention relates to traffic signalization field, particularly relate to a kind of evaluating system and method for Arterial Coordination Control scheme of arterial road.
Background technology
In recent years, along with the continuous propelling of China's Development of China's Urbanization, the road network of domestic big and medium-sized cities is expanded rapidly, transport need increases sharply, force urban traffic signal to control to control from basic single-point (single crossing), turn to the line (urban road main line), face (city road network region) cooperation control that contact multiple crossing.Wherein Arterial Coordination Control applies comparatively ripe Coordinated Control in current urban road transportation control, is one of important control method improving urban trunk operational efficiency.
In fact, signal parametric controller is mainly utilized to carry out Arterial Coordination Control to urban highway traffic at present; But, because the actual traffic running environment of urban road is complicated and changeable, the scheme that signal parametric controller is not general on Arterial Coordination Control.For the Arterial Coordination Control scheme of setting, often need in practical application to arrange initial coordination parameter according to on-the-spot transportation condition in advance, the Arterial Coordination Control scheme of setting is applied to after in signal parametric controller, according to the operational effect after Arterial Coordination Control scheme implementation, optimize coordination parameter in signal parametric controller (such as each crossing time-count cycle, phase differential), to reach preferably traffic control effect.In addition, in order to the long-term maintenance of the control effects of Arterial Coordination Control scheme, also need the irregular change according to traffic flow constantly to adjust coordination parameter.
Obviously, the key of the coordination parameter adjusted in signal parametric controller is the control effects obtaining Arterial Coordination Control scheme; But in practical application, existing signal parametric controller does not have the checking evaluation function of control effects usually.Existingly provide a kind of evaluation scheme utilizing traffic control simulation system to carry out control effects, analogue system is connected with signal parametric controller by network interface by it, the real-time magnitude of traffic flow of the arterial road gathered, signal control data are shown by the simulator in traffic control simulation system, simulation calculation goes out the queue length at the coordination crossing of arterial road; And the vehicle queue length at each coordination crossing by calculating, the control effects of assessment Arterial Coordination Control scheme.But, in fact, the actual traffic running environment of arterial road is complicated and changeable, utilizes this one-side state of a control of the vehicle queue length at crossing to assess the control effects of Arterial Coordination Control scheme, its accuracy is not high, and the validity of evaluation result is not high yet.
Therefore, be necessary to provide a kind of appraisal procedure that can improve the assessment accuracy of the control effects of Arterial Coordination Control scheme.
Summary of the invention
For the defect that above-mentioned prior art exists, embodiments provide a kind of evaluating system and method for Arterial Coordination Control scheme of arterial road, in order to improve the assessment accuracy of the control effects of Arterial Coordination Control scheme.
Embodiments provide a kind of appraisal procedure of Arterial Coordination Control scheme of arterial road, comprising:
According to each coordination crossing of arterial road to be assessed and the geometric condition data in each main line section, according to arterial road described in the scale of setting in Simulation System Interface; And gather the live signal release status at each coordination crossing and the real time execution speed in each main line section, in described Simulation System Interface, the signal lamp at each coordination crossing is shown according to the live signal release status at each coordination crossing;
For the every bar test path pre-set in described arterial road, according to the live signal release status at each coordination crossing involved by this test path and the real time execution speed in each main line section, control test carriage to advance in this test path, and in described Simulation System Interface, show the current location of this test carriage in this test path, detect the hourage of this test carriage in this test path;
According to the expection hourage of test carriage in every bar test path and the hourage of detection, the control effects of the current Arterial Coordination Control scheme of described arterial road is assessed.
Preferably, the expection hourage of test carriage and the hourage of detection in the every bar test path of described basis, the control effects of the current Arterial Coordination Control scheme of described arterial road is assessed, specifically comprises:
For every bar test path, according to the expection hourage of test carriage in this test path, and the hourage detected, calculate the delay index of test carriage in this test path;
According to the delay index of test carriage in each bar test path, calculate the mean delay index of described arterial road;
The delay index threshold of the mean delay index calculated and setting compared, if comparative result is for being less than, then the control effects assessing the current Arterial Coordination Control scheme of described arterial road is good; Otherwise the current Arterial Coordination Control scheme assessing described arterial road needs to optimize further.
Preferably, when described control test carriage is advanced in this test path, also comprise:
Detect the stop frequency of test carriage in this test path.
Preferably, after the described delay index threshold by the mean delay index calculated and setting compares, also comprise:
If described mean delay index is not less than described delay index threshold, then further the stop frequency summation of described test carriage in each test path is compared with setting parking threshold value;
If described stop frequency summation is less than described setting parking threshold value, then the control effects assessing the current Arterial Coordination Control scheme of described arterial road is good; Otherwise the current Arterial Coordination Control scheme assessing described arterial road needs to optimize further.
Preferably, after the current Arterial Coordination Control scheme of the described arterial road of described assessment needs optimization further, also comprise:
For every bar test path, according to the crossing stop frequency of test carriage at each coordination crossing of this test path, crossing stop frequency is therefrom selected to exceed the coordination crossing of setting threshold value as accurate bottleneck crossing;
For each accurate bottleneck crossing, count test carriage when travelling in each bar test path, at the average stop frequency at this accurate bottleneck crossing, and using the average stop frequency that the counts parking frequency as this accurate bottleneck crossing;
According to the parking frequency at each accurate bottleneck crossing, therefrom recommend out coordination crossing to be optimized in current Arterial Coordination Control scheme.
Preferably, the test carriage in each test path for set out simultaneously, or successively sets out.
Preferably, the described live signal release status according to each coordination crossing also comprises show the signal lamp at each coordination crossing in described Simulation System Interface after:
According to the real time execution speed in each main line section, this main line section in described Simulation System Interface shows the simulation dolly in advancing; And according to the real time execution speed in each main line section, control simulation dolly is advanced in each test path.
According to a further aspect in the invention, the embodiment of the present invention additionally provides a kind of evaluating system of Arterial Coordination Control scheme of arterial road, comprising:
Arterial road simulator, for according to each coordination crossing of arterial road to be assessed and the geometric condition data in each main line section, according to arterial road described in the scale of setting in Simulation System Interface; And gather the live signal release status at each coordination crossing and the real time execution speed in each main line section, in described Simulation System Interface, the signal lamp at each coordination crossing is shown according to the live signal release status at each coordination crossing;
Test carriage simulator, for the every bar test path pre-set in the arterial road for described arterial road simulator drafting, according to the live signal release status at each coordination crossing involved by this test path and the real time execution speed in each main line section, control test carriage to advance in this test path, and in described Simulation System Interface, show the current location of described test carriage in described arterial road in this test path, and detect the hourage of described test carriage in this test path;
Trade-off effect evaluator, for the hourage that expection hourage in this test path of the described test carriage that exports according to described test carriage simulator and described test carriage simulator are detected, the control effects of the current Arterial Coordination Control scheme of described arterial road is assessed.
Preferably, described trade-off effect evaluator specifically for for every bar test path, according to the expection hourage of test carriage in this test path, and the hourage detected, calculates the delay index of test carriage in this test path; And according to the delay index of test carriage in each bar test path, calculate the mean delay index of described arterial road; And the delay index threshold of the mean delay index calculated and setting is compared, if comparative result is for being less than, then the control effects assessing the current Arterial Coordination Control scheme of described arterial road is good; Otherwise the current Arterial Coordination Control scheme assessing described arterial road needs to optimize further.
Preferably, described test carriage simulator also for control test carriage advance in test path time, detect the stop frequency of test carriage in this test path.
Preferably, if described trade-off effect evaluator is also not less than described delay index threshold for described mean delay index, then further the stop frequency summation of described test carriage in each test path is compared with setting parking threshold value; If described stop frequency summation is less than described setting parking threshold value, then the control effects assessing the current Arterial Coordination Control scheme of described arterial road is good; Otherwise the current Arterial Coordination Control scheme assessing described arterial road needs to optimize further.
Preferably, described trade-off effect evaluator is also for after the current Arterial Coordination Control scheme of the described arterial road of assessment needs optimization further, for every bar test path, according to the crossing stop frequency of test carriage at each coordination crossing of this test path, crossing stop frequency is therefrom selected to exceed the coordination crossing of setting threshold value as accurate bottleneck crossing; For each accurate bottleneck crossing, count test carriage when travelling in each bar test path, at the average stop frequency at this accurate bottleneck crossing, and using the average stop frequency that the counts parking frequency as this accurate bottleneck crossing; According to the parking frequency at each accurate bottleneck crossing, therefrom recommend out coordination crossing to be optimized in current Arterial Coordination Control scheme.
Preferably, described test carriage simulator controls test carriage in each test path for set out simultaneously, or successively sets out.
Preferably, described arterial road simulator also for the real time execution speed according to each main line section gathered, shows the simulation dolly that each main line section is run in described Simulation System Interface; And according to the real time execution speed in each main line section, control simulation dolly is advanced in each test path.
In technical scheme of the present invention, advancing on the arterial road utilizing test carriage to draw in Simulation System Interface, simulates actual in observing with car under the actual traffic running environment of the arterial road after Arterial Coordination Control scheme implementation; And according to the hourage of test carriage on test path and expection hourage, the control effects of the current Arterial Coordination Control scheme of arterial road to be assessed is assessed.Because test carriage compares at the running time of test path the control effects that crossing queue length more can reflect Arterial Coordination Control scheme intuitively and accurately, by technical scheme provided by the invention, the assessment accuracy of the control effects of Arterial Coordination Control scheme can be improved.Further, by technical scheme provided by the invention, accurately can also locate the bottleneck crossing in arterial road, instruct optimizing and revising of Arterial Coordination Control scheme.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the appraisal procedure of the Arterial Coordination Control scheme of the arterial road of the embodiment of the present invention;
Fig. 2 is the process flow diagram of the control effects appraisal procedure of the Arterial Coordination Control scheme of the embodiment of the present invention;
Fig. 3 is the inner structure block diagram of the evaluating system of the Arterial Coordination Control scheme of the arterial road of the embodiment of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, enumerate preferred embodiment referring to accompanying drawing, the present invention is described in more detail.But it should be noted that, the many details listed in instructions are only used to make reader to have a thorough understanding, even if do not have these specific details also can realize these aspects of the present invention to one or more aspect of the present invention.
The term such as " module " used in this application, " system " is intended to comprise the entity relevant to computing machine, such as but not limited to hardware, firmware, combination thereof, software or executory software.Such as, module can be, but be not limited in: the thread of the process that processor runs, processor, object, executable program, execution, program and/or computing machine.For example, application program computing equipment run and this computing equipment can be modules.One or more module can be positioned at an executory process and/or thread.
The present inventor finds, in fact, after the Arterial Coordination Control scheme implementation of arterial road, special investigator can be arranged with the identity of common traveler, drive to travel on arterial road to be assessed, and the running time that record is omnidistance; Because the running time of vehicle on arterial road is specifically determined jointly by state of a control various under Arterial Coordination Control scheme (such as, the travelling speed in main line section, crossing vehicle queue length, crossing down time, coordinate the coordination phase place at crossing, coordinate the green light clearance time etc. of phase place).Therefore, according to the running time of record and the running time of expection, the control effects of Arterial Coordination Control scheme can more adequately be assessed.
Therefore, the present inventor considers, the live signal release status at crossing and the real time execution speed in each main line section can be coordinated according to each in this arterial road of the static geometric condition data of arterial road to be assessed, collection, in Simulation System Interface, emulate arterial road to be assessed; And then advancing on the arterial road utilizing test carriage to draw in Simulation System Interface, simulates actual in observing with car under the actual traffic running environment of the arterial road after Arterial Coordination Control scheme implementation; And detect the hourage of the test carriage in the arterial road drawn in every bar test path, according to the expection hourage of test carriage in every bar test path and the hourage of detection, the control effects of the Arterial Coordination Control scheme of arterial road is assessed.Compare the existing queue length according to calculating crossing in traffic control simulation system and carry out control effects assessment, technical solution of the present invention, according to the hourage of test carriage in the analogue system detected, can reflect the control effects of Arterial Coordination Control scheme more intuitively and accurately.
Technical scheme of the present invention is described in detail below in conjunction with accompanying drawing.
Embodiments provide the appraisal procedure of the Arterial Coordination Control scheme of arterial road, as shown in Figure 1, specifically can comprise the steps:
S101: according to each coordination crossing of arterial road to be assessed and the geometric condition data in each main line section, according to the arterial road that the scale of setting is to be assessed in Simulation System Interface.
In this step, the geometric condition data coordinating crossing specifically can comprise: the crossing width at this coordination crossing, crossing turn to the information in canalization data and each main line section adjacent with this coordination crossing.The geometric condition data in main line section specifically can comprise: the information at the length in this main line section, width and each coordination crossing adjacent with this main line section.How according to each coordination crossing of arterial road and the geometric condition Plotting data arterial road in each main line section, be well known to those skilled in the art, repeat no more herein.
S102: gather the live signal release status at each coordination crossing and the real time execution speed in each main line section, show the signal lamp at each coordination crossing according to the live signal release status at each coordination crossing in Simulation System Interface.
Particularly, for each coordination crossing, according to the live signal release status at this coordination crossing gathered, the signal lamp at this coordination crossing can be shown in Simulation System Interface.Wherein, the live signal release status coordinating crossing specifically can comprise: current clearance phase place and green time, the clearance cycle of each phase place, the green light clearance time of coordinating phase place and coordination phase differential.The real time execution speed in main line section specifically can comprise: the forward vehicle pass-through average velocity in this main line section, oppositely vehicle pass-through average velocity.
More preferably, in order to reflect the actual complex traffic environment of arterial road more accurately, several simulation dollies of random drafting on the arterial road can drawn in Simulation System Interface, the driving path of each simulation dolly in the arterial road drawn is random; According to the real time execution speed in each main line section, this main line section in Simulation System Interface shows the simulation dolly in advancing; And according to the live signal release status at each coordination crossing and the real time execution speed in each main line section, the traveling of control simulation dolly in arterial road.
S103: for the every bar test path pre-set in arterial road, controls test carriage and advances in this test path, and detect the hourage of this test carriage in this test path.
Particularly, for the every bar test path pre-set in arterial road, according to the live signal release status at each coordination crossing involved by this test path and the real time execution speed in each main line section, test carriage can be controlled and advances in this test path; And in Simulation System Interface, show the current location of this test carriage in this test path, detect the hourage of this test carriage in this test path.
Wherein, the test carriage in each test path for set out simultaneously, or successively sets out.In practical application, for each test carriage, the attribute information such as initial point, terminal, involved each coordination crossing, each main line section of this test path all pre-sets, and according to above-mentioned attribute information, can determine that one is expected hourage to the test carriage travelled in this test path.
In the embodiment of the present invention, the test carriage on each test path, it is when arriving arbitrary coordination crossing, is all travelled on the arterial road drawn by the live signal release status according to this coordination crossing.That is, if test carriage meets red light at this coordination crossing, parking waiting, if meet green light, normal pass.Correspondingly, time advancing in the arbitrary main line section of test carriage in the arterial road drawn, by the real time execution speeds according to this main line section, when even the travel direction of test carriage in this main line section is forward, travel according to the forward vehicle pass-through average velocity in this main line section; If when the travel direction of test carriage in this main line section is reverse, travel according to the reverse vehicle pass-through average velocity in this main line section.
S104: according to the expection hourage of test carriage in every bar test path and the hourage of detection, assesses the control effects of the current Arterial Coordination Control scheme of arterial road.
In the embodiment of the present invention, to the concrete grammar that the control effects of the current Arterial Coordination Control scheme of arterial road is assessed, flow process as shown in Figure 2, comprises the steps:
S201: for every bar test path, according to the expection hourage of test carriage in this test path, and the hourage detected, calculate the delay index of test carriage in this test path.
Particularly, for every bar test path, can using the ratio of the hourage of the expection hourage of test carriage in this test path and detection as the delay index of test carriage in this test path.Certainly, in practical application, also can using the difference of the hourage of the expection hourage of test carriage in this test path and detection as the delay index of test carriage in this test path.
S202: according to the delay index of test carriage in each bar test path, calculates the mean delay index of arterial road.
S203: judge whether the mean delay index calculated is less than the delay index threshold of setting, if so, then perform step S204; Otherwise, perform step S205.
Particularly, the delay index threshold of the mean delay index calculated and setting can being compared, if comparative result is for being less than, then performing step S204; Otherwise, perform step S205.
Wherein, to incur loss through delay index threshold specifically those skilled in the art rule of thumb carry out setting, such as, if using the ratio of the hourage of the expection hourage of test carriage in this test path and detection as the delay index of test carriage in this test path, then delay index threshold can be set as 1.1.If using the difference of the hourage of the expection hourage of test carriage in this test path and detection as the delay index of test carriage in this test path, then delay index threshold can be set as 30s.
S204: the control effects of the current Arterial Coordination Control scheme of assessment arterial road is good.
S205: the current Arterial Coordination Control scheme of assessment arterial road needs to optimize further.
More preferably, for the every bar test path pre-set in arterial road, when control test carriage is advanced in this test path, the stop frequency of test carriage in this test path can also be detected.
Like this, after the delay index threshold of the mean delay index calculated and setting compares by step S203, if the mean delay index calculated is not less than delay index threshold, before execution step S205, can also following steps be performed:
S206: judge whether the stop frequency summation of test carriage in each test path is less than setting parking threshold value, if so, then performs step S204; Otherwise, perform step S205.
Particularly, the stop frequency summation of test carriage in each test path is compared with setting parking threshold value; If stop frequency summation is less than setting parking threshold value, then perform step S204; Otherwise, perform step S205.
Wherein, above-mentioned setting parking threshold value specifically is rule of thumb carried out setting by those skilled in the art in advance, such as, can be set as 1 time.That is, if test carriage is green light when arriving all coordination crossings involved by test path, so, the stop frequency summation of the test carriage calculated in this test path will be less than 1, then the control effects can assessing the current Arterial Coordination Control scheme of arterial road is good.
As a kind of more excellent embodiment, performing step S205: after the current Arterial Coordination Control scheme of assessment arterial road needs to optimize further, the coordination crossing (also can be called bottleneck crossing herein) that the need in this arterial road are optimized can also be excavated.Particularly, bottleneck crossing can be excavated as follows:
S207: for every bar test path, according to the crossing stop frequency of test carriage at each coordination crossing of this test path, therefrom selects crossing stop frequency to exceed the coordination crossing of setting threshold value as accurate bottleneck crossing.
S208: for each accurate bottleneck crossing, counts test carriage when travelling in each bar test path, at the average stop frequency at this accurate bottleneck crossing, and using the average stop frequency that the counts parking frequency as this accurate bottleneck crossing.
S209: according to the parking frequency at each accurate bottleneck crossing, therefrom recommend out coordination crossing to be optimized in current Arterial Coordination Control scheme.
In practical application, the accurate bottleneck crossing can therefrom recommending the parking frequency maximum is as coordination crossing to be optimized in current Arterial Coordination Control scheme; Or, the parking frequency also can be recommended to exceed the accurate bottleneck crossing of the parking frequency threshold value of setting as coordination crossing to be optimized in current Arterial Coordination Control scheme.Like this, after the control effects of the current Arterial Coordination Control scheme to arterial road is assessed, accurately can also locate the bottleneck crossing in Arterial Coordination Control, instruct optimizing and revising of Arterial Coordination Control scheme, be conducive to the long-term maintenance of the good control effects of Trunk Road Coordination.
Based on the appraisal procedure of the Arterial Coordination Control scheme of above-mentioned arterial road, the embodiment of the present invention additionally provides the evaluating system of the Arterial Coordination Control scheme of arterial road, as shown in Figure 3, specifically can comprise: arterial road simulator 301, test carriage simulator 302, trade-off effect evaluator 303.
Wherein, arterial road simulator 301 for according to each coordination crossing of arterial road to be assessed and the geometric condition data in each main line section, according to arterial road described in the scale of setting in Simulation System Interface; And gather the live signal release status at each coordination crossing and the real time execution speed in each main line section, in described Simulation System Interface, the signal lamp at each coordination crossing is shown according to the live signal release status at each coordination crossing.
In the embodiment of the present invention, the evaluating system of the Arterial Coordination Control scheme of this arterial road specifically can embed signal parametric controller, like this, arterial road simulator 301 can call each coordination crossing of arterial road and the geometric condition data in each main line section from the configurations database of signal parametric controller; And the real time execution speed in each main line section that the traffic detector in the live signal release status at each coordination crossing that gathers of the intersection signal control machine that can obtain in signal parametric controller and signal parametric controller gathers.
In practical application, coordinate the geometric condition data at crossing and specifically can comprise: the crossing width at this coordination crossing in arterial road, crossing turn to the information in canalization data and each main line section adjacent with this coordination crossing.The geometric condition data in main line section specifically can comprise: the information at the length in this main line section in arterial road, width and each coordination crossing adjacent with this main line section.The live signal release status coordinating crossing specifically can comprise: current clearance phase place and green time, the clearance cycle of each phase place, the green light clearance time of coordinating phase place and coordination phase differential.The real time execution speed in main line section specifically can comprise: the forward vehicle pass-through average velocity in this main line section, oppositely vehicle pass-through average velocity.
More preferably, in order to simulate the complicated traffic environment of arterial road to be assessed more fully, arterial road simulator 301 according to the real time execution speed in each main line section gathered, can also show the simulation dolly that each main line section is run in Simulation System Interface; And according to the live signal release status at each coordination crossing and the real time execution speed in each main line section, control simulation dolly is advanced in each test path.
The every bar test path of test carriage simulator 302 for pre-setting in the arterial road drawn for arterial road simulator 301, according to the live signal release status at each coordination crossing involved by this test path and the real time execution speed in each main line section, control test carriage to advance in this test path, and in Simulation System Interface, show the current location of test carriage in arterial road in this test path, and detect the hourage of test carriage in this test path.Wherein, the test carriage in each test path for set out simultaneously, or successively sets out.
The hourage that trade-off effect evaluator 303 detected for expection hourage in this test path of the test carriage that exports according to test carriage simulator 302 and test carriage simulator, the control effects of the current Arterial Coordination Control scheme of arterial road is assessed.
Particularly, trade-off effect evaluator 303, can according to the expection hourage of test carriage in this test path for every bar test path, and the hourage detected, and calculates the delay index of test carriage in this test path; And according to the delay index of test carriage in each bar test path, calculate the mean delay index of described arterial road; And the delay index threshold of the mean delay index calculated and setting is compared, if comparative result is for being less than, then the control effects assessing the current Arterial Coordination Control scheme of arterial road to be assessed is good; Otherwise the current Arterial Coordination Control scheme of assessment arterial road needs to optimize further.
Wherein, can using the ratio of the hourage of the expection hourage of test carriage in this test path and detection as the delay index of test carriage in this test path; The delay index threshold of setting specifically can be set as 1.1.Certainly, in practical application, also can using the difference of the hourage of the expection hourage of test carriage in this test path and detection as the delay index of test carriage in this test path; The delay index threshold of setting specifically can be set as 30s.
In practical application, test carriage simulator 302 controls test carriage when advancing in test path, can also detect the stop frequency of test carriage in this test path.Therefore, more preferably, after the delay index threshold of the mean delay index calculated and setting compares by trade-off effect evaluator 303, if mean delay index is not less than described delay index threshold, then can further the stop frequency summation of test carriage in each test path be compared with setting parking threshold value; If stop frequency summation is less than described setting parking threshold value, then the control effects assessing the current Arterial Coordination Control scheme of arterial road to be assessed is good; Otherwise the current Arterial Coordination Control scheme of assessment arterial road needs to optimize further.
Adjustment is optimized for the ease of the follow-up Arterial Coordination Control scheme to arterial road to be assessed, effective prevention, alleviate the traffic congestion caused because Coordinated Control Scheme is improper, the embodiment of the present invention additionally provides a kind of more excellent embodiment, after the current Arterial Coordination Control scheme of assessment arterial road needs optimization further, the bottleneck crossing that the need in this arterial road are optimized can be excavated.
Particularly, trade-off effect evaluator 303, for every bar test path, according to the crossing stop frequency of test carriage at each coordination crossing of this test path, therefrom selects crossing stop frequency to exceed the coordination crossing of setting threshold value as accurate bottleneck crossing; For each accurate bottleneck crossing, count test carriage when travelling in each bar test path, at the average stop frequency at this accurate bottleneck crossing, and using the average stop frequency that the counts parking frequency as this accurate bottleneck crossing; According to the parking frequency at each accurate bottleneck crossing, therefrom recommend out coordination crossing to be optimized in current Arterial Coordination Control scheme.Such as, trade-off effect evaluator 303 the parking frequency can be recommended maximum accurate bottleneck crossing as coordination crossing to be optimized in current Arterial Coordination Control scheme; Or, therefrom recommend the parking frequency to exceed the accurate bottleneck crossing of the parking frequency threshold value of setting as coordination crossing to be optimized in current Arterial Coordination Control scheme.
In the embodiment of the present invention, be the assessment how carrying out the control effects of Arterial Coordination Control scheme about each ingredient in the evaluating system of the Arterial Coordination Control scheme of arterial road, can with reference to the concrete grammar of above-mentioned flow process.
In technical scheme of the present invention, advancing on the arterial road utilizing test carriage to draw in Simulation System Interface, simulates actual in observing with car under the actual traffic running environment of the arterial road after Arterial Coordination Control scheme implementation; And according to the hourage of test carriage on test path and expection hourage, the control effects of the current Arterial Coordination Control scheme of arterial road to be assessed is assessed.Because test carriage compares at the running time of test path the control effects that crossing queue length more can reflect Arterial Coordination Control scheme intuitively and accurately, by technical scheme provided by the invention, the assessment accuracy of the control effects of Arterial Coordination Control scheme can be improved.Further, by technical scheme provided by the invention, accurately can also locate the bottleneck crossing in arterial road, instruct optimizing and revising of Arterial Coordination Control scheme.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, this program can be stored in computer read/write memory medium, as: ROM/RAM, magnetic disc, CD etc.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. an appraisal procedure for the Arterial Coordination Control scheme of arterial road, is characterized in that, comprising:
According to each coordination crossing of arterial road to be assessed and the geometric condition data in each main line section, according to arterial road described in the scale of setting in Simulation System Interface; And gather the live signal release status at each coordination crossing and the real time execution speed in each main line section, in described Simulation System Interface, the signal lamp at each coordination crossing is shown according to the live signal release status at each coordination crossing;
For the every bar test path pre-set in described arterial road, according to the live signal release status at each coordination crossing involved by this test path and the real time execution speed in each main line section, control test carriage to advance in this test path, and in described Simulation System Interface, show the current location of this test carriage in this test path, detect the hourage of this test carriage in this test path;
According to the expection hourage of test carriage in every bar test path and the hourage of detection, the control effects of the current Arterial Coordination Control scheme of described arterial road is assessed.
2. the method for claim 1, is characterized in that, the expection hourage of test carriage and the hourage of detection in the every bar test path of described basis, assesses, specifically comprise the control effects of the current Arterial Coordination Control scheme of described arterial road:
For every bar test path, according to the expection hourage of test carriage in this test path, and the hourage detected, calculate the delay index of test carriage in this test path;
According to the delay index of test carriage in each bar test path, calculate the mean delay index of described arterial road;
The delay index threshold of the mean delay index calculated and setting compared, if comparative result is for being less than, then the control effects assessing the current Arterial Coordination Control scheme of described arterial road is good; Otherwise the current Arterial Coordination Control scheme assessing described arterial road needs to optimize further.
3. method as claimed in claim 2, is characterized in that, when described control test carriage is advanced in this test path, also comprise:
Detect the stop frequency of test carriage in this test path; And
After the described delay index threshold by the mean delay index calculated and setting compares, also comprise:
If described mean delay index is not less than described delay index threshold, then further the stop frequency summation of described test carriage in each test path is compared with setting parking threshold value;
If described stop frequency summation is less than described setting parking threshold value, then the control effects assessing the current Arterial Coordination Control scheme of described arterial road is good; Otherwise the current Arterial Coordination Control scheme assessing described arterial road needs to optimize further.
4. method as claimed in claim 3, is characterized in that, after the current Arterial Coordination Control scheme of the described arterial road of described assessment needs optimization further, also comprises:
For every bar test path, according to the crossing stop frequency of test carriage at each coordination crossing of this test path, crossing stop frequency is therefrom selected to exceed the coordination crossing of setting threshold value as accurate bottleneck crossing;
For each accurate bottleneck crossing, count test carriage when travelling in each bar test path, at the average stop frequency at this accurate bottleneck crossing, and using the average stop frequency that the counts parking frequency as this accurate bottleneck crossing;
According to the parking frequency at each accurate bottleneck crossing, therefrom recommend out coordination crossing to be optimized in current Arterial Coordination Control scheme.
5. the method as described in as arbitrary in claim 1-4, is characterized in that, the test carriage in each test path for set out simultaneously, or successively sets out.
6. an evaluating system for the Arterial Coordination Control scheme of arterial road, is characterized in that, comprising:
Arterial road simulator, for according to each coordination crossing of arterial road to be assessed and the geometric condition data in each main line section, according to arterial road described in the scale of setting in Simulation System Interface; And gather the live signal release status at each coordination crossing and the real time execution speed in each main line section, in described Simulation System Interface, the signal lamp at each coordination crossing is shown according to the live signal release status at each coordination crossing;
Test carriage simulator, for the every bar test path pre-set in the arterial road for described arterial road simulator drafting, according to the live signal release status at each coordination crossing involved by this test path and the real time execution speed in each main line section, control test carriage to advance in this test path, and in described Simulation System Interface, show the current location of described test carriage in described arterial road in this test path, and detect the hourage of described test carriage in this test path;
Trade-off effect evaluator, for the hourage that expection hourage in this test path of the described test carriage that exports according to described test carriage simulator and described test carriage simulator are detected, the control effects of the current Arterial Coordination Control scheme of described arterial road is assessed.
7. system as claimed in claim 6, is characterized in that,
Described trade-off effect evaluator specifically for for every bar test path, according to the expection hourage of test carriage in this test path, and the hourage detected, calculates the delay index of test carriage in this test path; And according to the delay index of test carriage in each bar test path, calculate the mean delay index of described arterial road; And the delay index threshold of the mean delay index calculated and setting is compared, if comparative result is for being less than, then the control effects assessing the current Arterial Coordination Control scheme of described arterial road is good; Otherwise the current Arterial Coordination Control scheme assessing described arterial road needs to optimize further.
8. system as claimed in claim 7, is characterized in that,
Described test carriage simulator also for control test carriage advance in test path time, detect the stop frequency of test carriage in this test path; And
If described trade-off effect evaluator is also not less than described delay index threshold for described mean delay index, then further the stop frequency summation of described test carriage in each test path is compared with setting parking threshold value; If described stop frequency summation is less than described setting parking threshold value, then the control effects assessing the current Arterial Coordination Control scheme of described arterial road is good; Otherwise the current Arterial Coordination Control scheme assessing described arterial road needs to optimize further.
9. system as claimed in claim 8, is characterized in that,
Described trade-off effect evaluator is also for after the current Arterial Coordination Control scheme of the described arterial road of assessment needs optimization further, for every bar test path, according to the crossing stop frequency of test carriage at each coordination crossing of this test path, crossing stop frequency is therefrom selected to exceed the coordination crossing of setting threshold value as accurate bottleneck crossing; For each accurate bottleneck crossing, count test carriage when travelling in each bar test path, at the average stop frequency at this accurate bottleneck crossing, and using the average stop frequency that the counts parking frequency as this accurate bottleneck crossing; According to the parking frequency at each accurate bottleneck crossing, therefrom recommend out coordination crossing to be optimized in current Arterial Coordination Control scheme.
10. the system as described in as arbitrary in claim 6-9, is characterized in that,
Described test carriage simulator controls test carriage in each test path for set out simultaneously, or successively sets out.
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