CN104157151A - Method and system for cooperation of city traffic guidance and signal control - Google Patents
Method and system for cooperation of city traffic guidance and signal control Download PDFInfo
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- CN104157151A CN104157151A CN201410266162.XA CN201410266162A CN104157151A CN 104157151 A CN104157151 A CN 104157151A CN 201410266162 A CN201410266162 A CN 201410266162A CN 104157151 A CN104157151 A CN 104157151A
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Abstract
The invention discloses a method and a system for cooperation of city traffic guidance and signal control. The method comprises the following steps of collecting real-time traffic flow information and real-time signal control information; establishing a PARAMICS simulation model of traffic guidance and signal control cooperation based on a city traffic network; setting parameters of the simulation model according to the abovementioned signal control information; calibrating a traffic generation and attraction matrix based on the collected real-time traffic flow information; receiving guidance strategy parameters of the PARAMICS simulation model, operating simulation, and outputting operational condition indexes of systems; changing the guidance strategy parameters, running simulation repeatedly, storing operational condition indexes of the systems of each simulation, and selecting the optimal guidance strategy parameter; applying the optimal guidance strategy parameter to traffic guidance and signal control systems; and sending the optimal guidance strategy to a user. The invention overcomes a defect that an algorithm of cooperation of traffic guidance and signal control systems is complicated and cannot be implemented in the prior art.
Description
Technical field
The invention belongs to intelligent transportation cooperative system field, especially a kind of urban traffic guidance and signal controlling Synergistic method and system.
Background technology
In the existing traffic administration hierarchy of control, the Urban Traf-fic Guidance System and whistle control system be two systems completely independently normally.But if we are from the angle analysis of the optimization aim of two systems, can find that the Urban Traf-fic Guidance System attainments are optimum user, whistle control system be take system effectiveness optimum as decision objective.This make urban transportation operation conditions always in always fluctuation state under, under extreme conditions, likely cause traffic circulation decrease in efficiency.
Through the research of nearly 40 years, researchers had certain understanding to the Urban Traf-fic Guidance System and whistle control system collaborative both at home and abroad.But the optimization of algorithm aspect is tended in existing research mostly, various theoretical algorithms are constantly proposed, lack practical application.Section number, the nodes of considering city road network in real life constantly increase simultaneously, and the computation complexity of existing theoretical algorithm also just constantly increases, and with regard to current Computing ability, is difficult to use in actual applications these algorithms to carry out decision-making.
Summary of the invention
Goal of the invention: provide the Synergistic method of a kind of urban traffic guidance and signal controlling, the defect being difficult to carry out to overcome existing system for traffic guiding and whistle control system synergetic complexity, the applying value of increase Practical Project.
Technical scheme: the Synergistic method of a kind of urban traffic guidance and signal controlling, comprises the steps:
Step 1, gathers real-time traffic stream information and real-time signal control information, comprises target road network road information, each section real-time traffic stream information and each intersection signal control parameter;
Step 2, sets up traffic guidance and the collaborative PARAMICS realistic model of signal controlling based on city road network, and the parameter of realistic model is set according to the relevant information of step 1;
Step 3, according to the real-time traffic stream information collecting in step 1, demarcates the traffic generation traffic attraction matrix of set up traffic guidance and the collaborative PARAMICS realistic model of signal controlling;
Step 4, the induction policing parameter of reception PARAMICS realistic model, operation emulation, output system operation conditions index; Change induction policing parameter, repeat above-mentioned emulation and output step, carry out Multi simulation running, preserve the system operation situation index that emulation is separately exported;
Step 5, the system operation situation index that relatively each emulation obtains, selects wherein best induction policing parameter, is applied to traffic guidance and whistle control system, to user, sends optimum induction strategy.
Described target road network road information comprises section number of track-lines and section link information; Described each section Real-Time Traffic Volume comprises each section entrance driveway magnitude of traffic flow, the entrance driveway speed of a motor vehicle and each section vehicle number; Described each intersection signal is controlled parameter and is comprised each phase place green time of signal lamp cycle duration, signal lamp phase place phase sequence and signal lamp.
Described induction policing parameter comprises induction renewal frequency and use induction user number percent, and described system running state index comprises system total travel time.
A cooperative system for urban traffic guidance and signal controlling, comprises as lower module:
On-line data acquisition and memory module, for gathering real-time traffic stream information and real-time signal control information, comprise target road network road information, each section real-time traffic stream information and each intersection signal control parameter;
PARAMICS simulation analysis module, in order to set up the collaborative PARAMICS realistic model of traffic guidance and signal controlling based on city road network, and arranges the parameter of realistic model according to real-time traffic stream information and real-time signal control information;
According to the real-time traffic stream information collecting, the traffic generation traffic attraction matrix of set up traffic guidance and the collaborative PARAMICS realistic model of signal controlling is demarcated;
Receive the induction policing parameter of PARAMICS realistic model, operation emulation, output system operation conditions index; Change induction policing parameter, repeat above-mentioned emulation and output step, carry out Multi simulation running, preserve the system operation situation index that emulation is separately exported;
Policy selection and control module, for the system operation situation index that relatively each emulation obtains, select wherein best induction policing parameter, is applied to traffic guidance and whistle control system, to user, sends optimum induction strategy.
Beneficial effect: the present invention utilizes PARAMICS to set up urban traffic guidance and signal controlling cooperation model, based on real-time traffic stream information and signal controlling information, obtain the optimum induction strategy under current demand signal controlled condition, overcome the defect that past system for traffic guiding and whistle control system synergetic complexity are difficult to carry out, there is Practical Project applying value.
Accompanying drawing explanation
Fig. 1 is traffic road net schematic diagram.
Fig. 2 is schematic diagram of the present invention.
Embodiment
In conjunction with Fig. 1 and Fig. 2, the preferred embodiments of the present invention are described.
Pass through complicated optimized algorithm and carry out urban traffic guidance and compare with the collaborative of signal controlling with traditional, the present invention proposes utilizes PARAMICS to set up urban traffic guidance and signal controlling cooperation model carries out real-time simulation optimization, can guarantee in operation time limited under real-time conditions, obtain the collaborative strategy of convergence global optimum.
Step 1, online data storage, image data content comprises: target road network section number of track-lines, section link information, each section Real-Time Traffic Volume information, and each section real-time traffic stream information and each intersection signal control parameter.Wherein, each section Real-Time Traffic Volume information comprises each section entrance driveway magnitude of traffic flow, the entrance driveway speed of a motor vehicle and each section vehicle number.Each intersection signal is controlled parameter and is comprised each phase place green time of signal lamp cycle duration, signal lamp phase place phase sequence and signal lamp.Above-mentioned real time data is for foundation and the parameter calibration of realistic model.
Step 2, set up the collaborative PARAMICS model of traffic guidance and signal controlling: according to the target road network section number of track-lines and the section link information that collect, set up realistic model, and comprise that according to each intersection signal control parameter signal lamp cycle duration, signal lamp phase place phase sequence, each phase place green time of signal lamp arrange each signalized intersections place signal lamp.
Step 3, traffic attraction matrix occurs to be demarcated: according to the real-time traffic stream information collecting in step 1, comprise each section entrance driveway magnitude of traffic flow, the entrance driveway speed of a motor vehicle, each section vehicle number, the traffic generation traffic attraction matrix of set up traffic guidance and the collaborative PARAMICS realistic model of signal controlling is demarcated.
Step 4, the many group inductions of test policing parameter, output system operation conditions index: the generation traffic attraction matrix through step 3 is demarcated, the traffic guidance of setting up in step 2 and signal controlling are collaborative, PARAMICS realistic model can have been simulated current traffic circulation situation, PARAMICS software is set, make it can output system operation conditions index after operation realistic model, the induction policing parameter that enumeration test is feasible, operation emulation, output system operation conditions index, carries out Multi simulation running, and preserves the system operation situation index that emulation is separately exported.
Step 5, decision analysis: the system operation situation index that each emulation is obtained compares, selects wherein best induction policing parameter.
As shown in Figure 1, below for thinking that based on said method domestic certain city moment road network carries out the concrete embodiment for example of working in coordination with of traffic guidance and signal controlling:
S1, online data storage: target road network is domestic certain urban area road network, online data storage mainly gathers a certain moment target road network section number of track-lines, section link information, each section Real-Time Traffic Volume and comprises that each section entrance driveway magnitude of traffic flow, the entrance driveway speed of a motor vehicle, each section vehicle number, each intersection signal control parameter and comprise signal lamp cycle duration, signal lamp phase place phase sequence, each phase place green time of signal lamp.
S2, set up the collaborative PARAMICS realistic model of traffic guidance and signal controlling: according to the target road network section number of track-lines, the section link information that collect, set up realistic model, and comprise that according to each intersection signal control parameter signal lamp cycle duration, signal lamp phase place phase sequence, each phase place green time of signal lamp arrange each signalized intersections place signal lamp.
S3, traffic attraction matrix occurs to be demarcated: according to the real-time traffic stream information collecting, comprise each section entrance driveway magnitude of traffic flow, the entrance driveway speed of a motor vehicle, each section vehicle number, the traffic generation traffic attraction matrix of set up traffic guidance and the collaborative PARAMICS realistic model of signal controlling is demarcated.
S4, the many group inductions of test policing parameter, output system operation conditions index: the generation traffic attraction matrix through S3 is demarcated, the collaborative PARAMICS realistic model of the traffic guidance of setting up in S2 and signal controlling can have been simulated current traffic circulation situation, PARAMICS software is set, makes it can output system operation conditions index after realistic model in operation.Induction renewal frequency is set progressively to be changed to and not to upgrade by 30 seconds/time, setup and use induction user number percent progressively changes to 100% by 25%, test feasible induction policing parameter combination, operation emulation, output system operation conditions index, carry out Multi simulation running, and preserve the system operation situation index that emulation is separately exported.
S5, decision analysis: the system operation situation index that each emulation is obtained compares, selects wherein best induction policing parameter.
As shown in table 1, under current traffic condition and signal controlling condition, controlling mutually collaborative optimum induction strategy with current demand signal is to upgrade an induction information in every 10 seconds, and only to user's issue of 75%.
Table 1
In upper table, can find out: after adopting method of the present invention to upgrade, efficiency increases, within every 10 seconds, upgrade and to user's issuing control strategy of 75%, most effective.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple equivalents to technical scheme of the present invention, these equivalents all belong to protection scope of the present invention.
It should be noted that in addition each the concrete technical characterictic described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
Claims (4)
1. a Synergistic method for urban traffic guidance and signal controlling, is characterized in that, comprises the steps:
Step 1, gathers real-time traffic stream information and real-time signal control information, comprises target road network road information, each section real-time traffic stream information and each intersection signal control parameter;
Step 2, sets up traffic guidance and the collaborative PARAMICS realistic model of signal controlling based on city road network, and the parameter of realistic model is set according to the relevant information of step 1;
Step 3, according to the real-time traffic stream information collecting in step 1, demarcates the traffic generation traffic attraction matrix of set up traffic guidance and the collaborative PARAMICS realistic model of signal controlling;
Step 4, the induction policing parameter of reception PARAMICS realistic model, operation emulation, output system operation conditions index; Change induction policing parameter, repeat above-mentioned emulation and output step, carry out Multi simulation running, preserve the system operation situation index that emulation is separately exported;
Step 5, the system operation situation index that relatively each emulation obtains, selects wherein best induction policing parameter, is applied to traffic guidance and whistle control system, to user, sends optimum induction strategy.
2. the Synergistic method of urban traffic guidance according to claim 1 and signal controlling, is characterized in that:
Described target road network road information comprises section number of track-lines and section link information; Described each section Real-Time Traffic Volume comprises each section entrance driveway magnitude of traffic flow, the entrance driveway speed of a motor vehicle and each section vehicle number; Described each intersection signal is controlled parameter and is comprised each phase place green time of signal lamp cycle duration, signal lamp phase place phase sequence and signal lamp.
3. the Synergistic method of urban traffic guidance according to claim 1 and signal controlling, is characterized in that:
Described induction policing parameter comprises induction renewal frequency and use induction user number percent, and described system running state index comprises system total travel time.
4. a cooperative system for urban traffic guidance and signal controlling, is characterized in that, comprises as lower module:
On-line data acquisition and memory module, for gathering real-time traffic stream information and real-time signal control information, comprise target road network road information, each section real-time traffic stream information and each intersection signal control parameter;
PARAMICS simulation analysis module, in order to set up the collaborative PARAMICS realistic model of traffic guidance and signal controlling based on city road network, and arranges the parameter of realistic model according to real-time traffic stream information and real-time signal control information;
According to the real-time traffic stream information collecting, the traffic generation traffic attraction matrix of set up traffic guidance and the collaborative PARAMICS realistic model of signal controlling is demarcated;
Receive the induction policing parameter of PARAMICS realistic model, operation emulation, output system operation conditions index; Change induction policing parameter, repeat above-mentioned emulation and output step, carry out Multi simulation running, preserve the system operation situation index that emulation is separately exported;
Policy selection and control module, for the system operation situation index that relatively each emulation obtains, select wherein best induction policing parameter, is applied to traffic guidance and whistle control system, to user, sends optimum induction strategy.
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| CN109544929A (en) * | 2018-12-14 | 2019-03-29 | 华南理工大学 | A kind of control of vehicle low-carbon and abductive approach, system, equipment and storage medium based on big data |
| CN109711026A (en) * | 2018-12-20 | 2019-05-03 | 中山大学 | A kind of accurate traffic simulation scenario building method of Paramics based on bayonet data |
| CN113506445A (en) * | 2021-09-13 | 2021-10-15 | 四川国蓝中天环境科技集团有限公司 | Real-time traffic guidance system and method considering long-term behavior change compliance of travelers |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109147355A (en) * | 2018-09-17 | 2019-01-04 | 杭州中奥科技有限公司 | Multiple Intersections signal timing plan generation method and device |
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| CN109544929B (en) * | 2018-12-14 | 2020-12-15 | 华南理工大学 | Vehicle low-carbon control and induction method, system, equipment and storage medium based on big data |
| CN109711026A (en) * | 2018-12-20 | 2019-05-03 | 中山大学 | A kind of accurate traffic simulation scenario building method of Paramics based on bayonet data |
| CN109711026B (en) * | 2018-12-20 | 2023-06-13 | 中山大学 | Paramics accurate traffic simulation scene construction method based on bayonet data |
| CN113506445A (en) * | 2021-09-13 | 2021-10-15 | 四川国蓝中天环境科技集团有限公司 | Real-time traffic guidance system and method considering long-term behavior change compliance of travelers |
| CN113506445B (en) * | 2021-09-13 | 2021-11-30 | 四川国蓝中天环境科技集团有限公司 | Real-time traffic guidance system and method considering long-term behavior change compliance of travelers |
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