CN107331170B - Intersection signal timing evaluation method and system based on the green light loss time - Google Patents
Intersection signal timing evaluation method and system based on the green light loss time Download PDFInfo
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- CN107331170B CN107331170B CN201710779813.9A CN201710779813A CN107331170B CN 107331170 B CN107331170 B CN 107331170B CN 201710779813 A CN201710779813 A CN 201710779813A CN 107331170 B CN107331170 B CN 107331170B
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- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
Abstract
The invention discloses intersection signal timing evaluation methods and system based on the green light loss time, comprising: establishes bayonet database；The time headway in each signal period is calculated using the bayonet data of bayonet database；The time headway for rejecting mistake, retains effective time headway；Effective time headway is ranked up according to sequence from small to large, effective time headway is divided into: minimum, general and highest three grades calculates the difference between minimum average effective time headway and the effective time headway of highest average；Intersection signal timing scheme is evaluated using the difference between minimum average effective time headway and the effective time headway of highest average.The present invention is suitable for bayonet data, geomagnetic data, loop data, the traffic data that the detectors such as traffic video provide, and the single-point intersection signal timing dial evaluation being suitable under unsaturated state.
Description
Technical field
The present invention relates to technical field of traffic control, more particularly to the intersection signal timing based on the green light loss time
Evaluation method and system.
Background technique
Currently, increasing with car ownership, the adaptation that current signal time distributing conception is unable to real-time high-efficiency is worked as
The current of preceding traffic flow requires, and often will appear some problems in practical applications, causes intersection traffic efficiency not high.
Therefore it needs to evaluate intersection signal timing, analyzes the unreasonable reason of current demand signal timing scheme and to timing scheme
Optimize adjustment.
There are certain deficiencies in intersection signal timing evaluation processing for it:
Chinese invention patent [106683440 A of CN] and Chinese invention patent [106683441 A of CN] are according to intersection
The difference of signal time distributing conception optimization front and back each phase time headway and delay, determines the optimization direction of signal time distributing conception.Such as
Phase number of the time headway difference greater than zero is greater than 1 in each phase in fruit signal time distributing conception optimization front and back, obtains the signal
The current optimization number of timing scheme and the optimization direction for evaluating each phase in signal time distributing conception；If it is less than 1, before optimization
The difference being delayed in each phase afterwards is greater than 0, obtains the current optimization number of the signal time distributing conception and evaluates signal timing dial side
Otherwise the optimization direction of each phase in case directly exports evaluation result；
Chinese invention patent [106683442 A of CN] selection time headway, queue length and intersection delay is multiple comments
Valence index is standardized multiple evaluation indexes, is based on preset evaluation index Weights-selected Algorithm, calculates multiple evaluations and refers to
Target weighted value obtains the evaluation result of intersection signal timing scheme；
The prior art, mainly from the traffic parameters such as saturation degree, delay, queue length to the signal time distributing conception of intersection into
Row evaluation, but particular problem present in intersection signal timing is obtained in multi-parameter of not comforming.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of intersection signals based on the green light loss time to match
When evaluation method, this method can in the traffic data provided based on existing traffic detector, find intersection signal timing deposit
The problem of, also provide feasible reliable suggestion for city traffic management department, and then provide for traffic administration person and traveler
It is convenient and quick.The method is suitable for bayonet data, geomagnetic data, loop data, the friendship that the detectors such as traffic video provide
Logical data, and the single-point intersection signal timing dial evaluation being suitable under unsaturated state.
A kind of intersection signal timing evaluation method based on the green light loss time, comprising:
Step (1): bayonet database is established；
Step (2): the time headway in each signal period is calculated using the bayonet data of bayonet database；
Step (3): the time headway of mistake is rejected, effective time headway is retained；
Step (4): effective time headway is ranked up according to sequence from small to large, effective time headway is divided into:
Minimum, general and highest three grades, calculates between minimum average effective time headway and the effective time headway of highest average
Difference；
Step (5): using the difference between minimum average effective time headway and the effective time headway of highest average to friendship
Prong signal time distributing conception is evaluated.
The bayonet database of the step (1), comprising: license plate number, bayonet number, cross the vehicle time, by bayonet when vehicle
Road number and direction of traffic；At the time of the mistake vehicle time refers to that bayonet test passes through to vehicle；
The time headway calculation formula of the step (2) are as follows:
hi=ti-ti-1,
In formula:
hiFor the time headway of lane i-th vehicle and (i-1)-th vehicle same in phase；
tiAt the time of detecting that i-th, same lane vehicle passes through for phase inner bayonet；
ti-1At the time of detecting that (i-1)-th, same lane vehicle passes through for phase inner bayonet；
The method that the step (3) rejects the time headway of mistake are as follows: whether judge time headway less than 1 second, if being less than,
It is expressed as the time headway of mistake, then if more than being then correct time headway.
The step (4): effective time headway is ranked up according to sequence from small to large, is divided into 20% minimum headstock
When away from 60% general time headway and 20% highest time headway, and calculate 20% highest average time headway and 20% minimum
Average headway difference.
The step (4) calculates 20% highest average time headway and the calculating of 20% minimum average headway difference is public
Formula are as follows:
In formula,
hTFor in a signal period, 20% highest average time headway and 20% minimum average headway difference；
For in a signal period, 20% highest average time headway；
For in a signal period, 20% minimum average headway.
The step (5):
Using time headway difference 3s as standard, if 20% highest average time headway and 20% minimum average vehicle in phase
It is less than 3s away from difference when head, then illustrates that signal timing dial is reasonable, otherwise illustrating signal timing dial, there are problems；
If all wagon flows have green light to lose the time in a phase, prompt split problematic；
If a phase inner part wagon flow has green light to lose the time, prompt phase problematic；
If all phases have green light to lose the time, prompt the period excessive；
In one period, if green light loss time change amplitude is larger, prompt time segmentation is problematic.
Intersection message in order to solve the deficiencies in the prior art, the present invention also provides another kind based on the green light loss time
Number timing evaluation system, has the effect of providing accurate evaluation result；
A kind of intersection signal timing evaluation system based on the green light loss time, comprising: memory and processor, it is described
Computer program is stored on memory, the processor is for running the computer program while realizing following steps:
Step (1): bayonet database is established；
Step (2): the time headway in each signal period is calculated using the bayonet data of bayonet database；
Step (3): the time headway of mistake is rejected, effective time headway is retained；
Step (4): effective time headway is ranked up according to sequence from small to large, effective time headway is divided into:
Minimum, general and highest three grades, calculates between minimum average effective time headway and the effective time headway of highest average
Difference；
Step (5): using the difference between minimum average effective time headway and the effective time headway of highest average to friendship
Prong signal time distributing conception is evaluated.
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
Following steps are completed when row:
Step (1): bayonet database is established；
Step (2): the time headway in each signal period is calculated using the bayonet data of bayonet database；
Step (3): the time headway of mistake is rejected, effective time headway is retained；
Step (4): effective time headway is ranked up according to sequence from small to large, effective time headway is divided into:
Minimum, general and highest three grades, calculates between minimum average effective time headway and the effective time headway of highest average
Difference；
Step (5): using the difference between minimum average effective time headway and the effective time headway of highest average to friendship
Prong signal time distributing conception is evaluated.
Compared with prior art, the beneficial effects of the present invention are:
Using 20% highest average time headway in a phase and 20% minimum average headway difference as intersection
Signal timing dial evaluation criterion, according to green time damaed cordition different in the signal period, existing for available signal timing dial
Various problems: if all wagon flows have green light to lose the time in a phase, prompt split problematic；If a phase
Inner part wagon flow has green light to lose the time, prompts phase problematic；If all phases have green light to lose the time, week is prompted
Phase is excessive；In one period, if green light loss time change amplitude is larger, prompt time segmentation is problematic.By above
Analysis provides feasible reference proposition in turn for the modification of signal timing dial.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the intersection signal evaluation rubric figure of this patent.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As shown in Figure 1, the intersection signal timing evaluation method based on the green light loss time,
The specific method of step 1):
Bayonet data are classified according to phase, time headway calculation formula is hi=ti-ti-1, in formula:
hiFor the time headway of lane i-th vehicle and (i-1)-th vehicle same in phase；
tiAt the time of detecting that i-th, same lane vehicle passes through for phase inner bayonet；
ti-1At the time of detecting that (i-1)-th, same lane vehicle passes through for phase inner bayonet；
When time headway is 0, i.e. hiWhen=0, illustrate error in data occur, and delete wrong data；Work as vehicle
Away from greater than signal period, i.e. h when headiWhen > T, T is the signal period, illustrates that a phase green light has terminated, into next signal
Period green light.
The time headway in each signal period is counted, effective time headway is arranged according to sequence from small to large
Sequence is divided into 20% minimum time headway, 60% general time headway and 20% highest time headway, and calculates 20% highest average
Time headway and 20% minimum average headway difference.
The specific method of step 2): 20% highest average time headway and 20% minimum average headstock in one phase of statistics
When away from difference, 20% highest average time headway intersects with 20% minimum average headway difference judgement in the basis signal period
There are problem, time headway difference calculation formula is mouth signal timing dialIn formula,
hTFor in a signal period, 20% highest average time headway and 20% minimum average headway difference；
For in a signal period, 20% highest average time headway；
For in a signal period, 20% minimum average headway；
Using time headway difference 3s as standard, if 20% highest average time headway and 20% minimum average vehicle in phase
Away from difference < 3s when head, then illustrate that signal timing dial is reasonable, otherwise illustrating signal timing dial, there are problems；If owned in a phase
Wagon flow has green light to lose the time, prompts split problematic；If a phase inner part wagon flow has green light to lose the time, mention
Show that phase is problematic；If all phases have green light to lose the time, prompt the period excessive；In one period, if green light
It is larger to lose time change amplitude, then prompt time segmentation is problematic.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (7)
1. a kind of intersection signal timing evaluation method based on the green light loss time, characterized in that include:
Step (1): bayonet database is established；
Step (2): the time headway in each signal period is calculated using the bayonet data of bayonet database；
Step (3): the time headway of mistake is rejected, effective time headway is retained；
Step (4): effective time headway is ranked up according to sequence from small to large, effective time headway is divided into: minimum,
General and highest three grades, calculates the difference between minimum average effective time headway and the effective time headway of highest average；
Step (5): using the difference between minimum average effective time headway and the effective time headway of highest average to intersection
Signal time distributing conception is evaluated；
The step (4): effective time headway is ranked up according to sequence from small to large, when being divided into 20% minimum headstock
Away from, 60% general time headway and 20% highest time headway, and calculate 20% highest average time headway with 20% it is minimum put down
Equal time headway difference；
The step (5):
Using time headway difference 3s as standard, if 20% highest average time headway and when 20% minimum average headstock in phase
It is less than 3s away from difference, then illustrates that signal timing dial is reasonable, otherwise illustrating signal timing dial, there are problems；
If all wagon flows have green light to lose the time in a phase, prompt split problematic；
If a phase inner part wagon flow has green light to lose the time, prompt phase problematic；
If all phases have green light to lose the time, prompt the period excessive；
In one period, if green light loss time change amplitude is larger, prompt time segmentation is problematic.
2. a kind of intersection signal timing evaluation method based on the green light loss time as described in claim 1, characterized in that
The bayonet database of the step (1), comprising: license plate number, bayonet number, cross the vehicle time, by bayonet when lane number and
Direction of traffic；At the time of the mistake vehicle time refers to that bayonet test passes through to vehicle.
3. a kind of intersection signal timing evaluation method based on the green light loss time as described in claim 1, characterized in that
The time headway calculation formula of the step (2) are as follows:
hi=ti-ti-1,
In formula:
hiFor the time headway of lane i-th vehicle and (i-1)-th vehicle same in phase；
tiAt the time of detecting that i-th, same lane vehicle passes through for phase inner bayonet；
ti-1At the time of detecting that (i-1)-th, same lane vehicle passes through for phase inner bayonet.
4. a kind of intersection signal timing evaluation method based on the green light loss time as described in claim 1, characterized in that
The method that the step (3) rejects the time headway of mistake are as follows: judge time headway whether less than 1 second, if being less than, then it represents that be
The time headway of mistake, if more than being then correct time headway.
5. a kind of intersection signal timing evaluation method based on the green light loss time as described in claim 1, characterized in that
The step (4) calculates the calculation formula of 20% highest average time headway and 20% minimum average headway difference are as follows:
In formula,
hTFor in a signal period, 20% highest average time headway and 20% minimum average headway difference；
For in a signal period, 20% highest average time headway；
For in a signal period, 20% minimum average headway.
6. a kind of intersection signal timing evaluation system based on the green light loss time, characterized in that include: memory and processing
Device is stored with computer program on the memory, and realization is as follows simultaneously for running the computer program for the processor
Step:
Step (1): bayonet database is established；
Step (2): the time headway in each signal period is calculated using the bayonet data of bayonet database；
Step (3): the time headway of mistake is rejected, effective time headway is retained；
Step (4): effective time headway is ranked up according to sequence from small to large, effective time headway is divided into: minimum,
General and highest three grades, calculates the difference between minimum average effective time headway and the effective time headway of highest average；
Step (5): using the difference between minimum average effective time headway and the effective time headway of highest average to intersection
Signal time distributing conception is evaluated；
The step (4): effective time headway is ranked up according to sequence from small to large, when being divided into 20% minimum headstock
Away from, 60% general time headway and 20% highest time headway, and calculate 20% highest average time headway with 20% it is minimum put down
Equal time headway difference；
The step (5):
Using time headway difference 3s as standard, if 20% highest average time headway and when 20% minimum average headstock in phase
It is less than 3s away from difference, then illustrates that signal timing dial is reasonable, otherwise illustrating signal timing dial, there are problems；
If all wagon flows have green light to lose the time in a phase, prompt split problematic；
If a phase inner part wagon flow has green light to lose the time, prompt phase problematic；
If all phases have green light to lose the time, prompt the period excessive；
In one period, if green light loss time change amplitude is larger, prompt time segmentation is problematic.
7. a kind of computer readable storage medium, characterized in that be stored thereon with computer program, the computer program is located
Reason device completes following steps when executing:
Step (1): bayonet database is established；
Step (2): the time headway in each signal period is calculated using the bayonet data of bayonet database；
Step (3): the time headway of mistake is rejected, effective time headway is retained；
Step (4): effective time headway is ranked up according to sequence from small to large, effective time headway is divided into: minimum,
General and highest three grades, calculates the difference between minimum average effective time headway and the effective time headway of highest average；
Step (5): using the difference between minimum average effective time headway and the effective time headway of highest average to intersection
Signal time distributing conception is evaluated；
The step (4): effective time headway is ranked up according to sequence from small to large, when being divided into 20% minimum headstock
Away from, 60% general time headway and 20% highest time headway, and calculate 20% highest average time headway with 20% it is minimum put down
Equal time headway difference；
The step (5):
Using time headway difference 3s as standard, if 20% highest average time headway and when 20% minimum average headstock in phase
It is less than 3s away from difference, then illustrates that signal timing dial is reasonable, otherwise illustrating signal timing dial, there are problems；
If all wagon flows have green light to lose the time in a phase, prompt split problematic；
If a phase inner part wagon flow has green light to lose the time, prompt phase problematic；
If all phases have green light to lose the time, prompt the period excessive；
In one period, if green light loss time change amplitude is larger, prompt time segmentation is problematic.
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| CN108269400B (en) * | 2018-01-25 | 2020-08-25 | 山东交通学院 | Main trunk signal control intersection delay estimation method and device |
| CN108615377B (en) * | 2018-05-28 | 2021-02-05 | 安徽畅通行交通信息服务有限公司 | Traffic passage matching evaluation method based on checkpoint data |
| CN109448374B (en) * | 2018-11-16 | 2022-11-08 | 浩鲸云计算科技股份有限公司 | Evaluation method for representing supply and demand unbalance of intersection |
| CN110136444B (en) * | 2019-06-06 | 2020-07-10 | 南京慧尔视智能科技有限公司 | Intersection green light idle time calculation method and device |
| CN111754791B (en) * | 2020-06-11 | 2021-08-20 | 广东振业优控科技股份有限公司 | Intersection signal lamp phase time servo control method |
| CN111798679B (en) * | 2020-07-24 | 2021-10-22 | 公安部交通管理科学研究所 | Signalized intersection lane green light loss time calculation method and system |
| CN113129594A (en) * | 2021-04-23 | 2021-07-16 | 武汉科技大学 | Intersection saturation flow rate calculation method based on bayonet data |
| CN114202933B (en) * | 2021-12-09 | 2023-10-27 | 合肥安慧软件有限公司 | Intersection signal control efficiency evaluation method based on intersection electric alarm data |
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| CN106251654A (en) * | 2016-09-21 | 2016-12-21 | 中兴软创科技股份有限公司 | Crossing based on time headway Dynamic Signal timing designing method |
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| CN104332062B (en) * | 2014-10-28 | 2016-08-24 | 北方工业大学 | Intersection signal based on sensing control model is coordinated to control optimization method |
| CN106683440B (en) * | 2016-12-28 | 2019-11-15 | 安徽科力信息产业有限责任公司 | Single-point intersection signal timing schemes evaluation method under unsaturated state |
| CN106683441B (en) * | 2016-12-28 | 2019-12-31 | 安徽科力信息产业有限责任公司 | Intersection signal timing scheme evaluation method |
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| CN106251654A (en) * | 2016-09-21 | 2016-12-21 | 中兴软创科技股份有限公司 | Crossing based on time headway Dynamic Signal timing designing method |
| CN106910336A (en) * | 2016-11-03 | 2017-06-30 | 中兴软创科技股份有限公司 | Method for obtaining the time headway coefficient of stability |
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