CN1967622A - Forecast of urban traffic and traffic information inducement system - Google Patents
Forecast of urban traffic and traffic information inducement system Download PDFInfo
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Abstract
The city traffic flow forecast and traffic information guidance system comprises the traffic information gathering subsystem, the communication subsystem, the traffic information integrated processing platform, the traffic information issuing subsystem and closed-circuit television monitoring subsystem. The traffic information gathering subsystem collects the traffic information of the scene, and transmits to the said traffic information integrated processing platform through the said communication subsystem, and the said traffic information integrated processing platform analyzes, integrates, and forecasts the traffic data, and then the real-time traffic information is directly transmitted to the traffic scene faced vehicles through the traffic information issuing subsystem. The invention can improve the passing efficiency of traffic system, and can significantly increase the drivers' understanding of the road traffic conditions, to adjust the arrived value of traffic volume, and make the arrived value of each trunk road to a balanced distribution, and avoid vehicles number exceeding over the actual capacity, thereby improving traffic jams, increase traffic smooth and traffic system operating efficiency.
Description
Technical field
The present invention relates to the magnitude of traffic flow and measure and control technology, relate in particular to a kind of adjustment technology, particularly forecast of urban traffic and traffic information inducement system of urban road traffic flow amount.
Background technology
In the prior art, traffic flow is induced and predicted is the important component part of intelligent transportation system.Along with the emphasis of developed countries transport development from the transfer of traffic system construction to transportation system management, the research and the application progress of intelligent transportation system had more and more faster trend.In essence, intelligent transportation system has been represented a kind of transportation system management technology of highest level, is intended to improve traffic system efficient with lower cost and short time, reduces congested in trafficly, alleviates air pollution and saves the energy.Urban Traffic Flow Guidance Systems China also outside in conceptual phase, also do not have real practical system.At present, the vehicle possess amount in China city just increases with 15% two-forty, and the rate of growth of urban road only is about 3%, and rapid development of economy and quickening of urbanization process make the urban transportation infrastructure of China bear huge pressure.Simultaneously, the phenomenon that inefficient utilization and administrative skill fall behind and deposit has been aggravated the difficulty that the means of transportation shortage causes again, has increased the weight of blocking up of traffic.
Summary of the invention
The purpose of this invention is to provide a kind of forecast of urban traffic and traffic information inducement system, described this forecast of urban traffic and traffic information inducement system will solve the still unpractical technical matters of urban traffic flow inductive technology in the prior art.
This forecast of urban traffic of the present invention and traffic information inducement system, by the traffic information collection subsystem, communication subsystem, transport information overall treatment platform, transport information issue subsystem and closed-circuit television watchdog subsystem constitute, it is characterized in that: described traffic information collection subsystem is connected with transport information overall treatment platform by described communication subsystem, described closed-circuit television watchdog subsystem is connected with transport information overall treatment platform by described communication subsystem, described transport information overall treatment platform is connected with described transport information issue subsystem by communication subsystem, described traffic information collection subsystem is gathered the traffic information data at road scene and is passed to described transport information overall treatment platform, described transport information overall treatment platform carries out Treatment Analysis to described traffic information data, obtain induction information, by described transport information issue subsystem described induction information is issued to the road scene again, described closed-circuit television watchdog subsystem is delivered to transport information overall treatment platform with the video information at road scene and carries out manually auxiliary monitoring, be provided with data analysis and prognoses system in the described transport information overall treatment platform, described data analysis and prognoses system are by the current situation of traffic database, the traffic historical data base, predicting unit and control induce the unit to constitute, the basic data that described data analysis and prognoses system utilize described current situation of traffic database and traffic historical data base to provide is carried out multidimensional data analysis, described predicting unit and control induce the unit to adopt neural network prediction method and nonparametric Regression Model method to carry out forecasting traffic flow, and utilize the effect factor that draws from road site traffic information data to feed back in predicting unit and predict adjustment, described control induces the unit to adopt the Intelligent Fuzzy Control method to carry out circle collection, prediction, induce.
Further, described traffic information distribution system adopts variable information plate issue Real-time Traffic Information.
Further, described traffic information distribution system according to wide area induce, induce the part, traffic behavior issue is induced, movable type induces four levels that vehicle is induced.
Further, the described communication subsystem mode that adopts wire communication mode or communication or wire communication to combine with radio communication is worked.
Further, be provided with annular magnetic test coil or video data detecting sensor in the described traffic information collection subsystem.
The present invention and prior art contrast, and its effect is actively with tangible.The present invention can improve the traffic system traffic efficiency, can significantly improve the degree of understanding of human pilot to road traffic condition, thereby regulate the arrival number of the volume of traffic, make the volume of traffic of each bar turnpike road can equiblibrium mass distribution, avoid vehicle number to surpass the actual traffic capacity of road, thereby improve traffic jam issue, improve the unobstructed and traffic system operational efficiency of traffic.Transport solution blocks up, and improves have a good transport and communication network rate and traffic system operational efficiency, helps the economy and society development.By effective traffic guidance, reduce the time that vehicle on the way stops simultaneously, thereby alleviate the city greatly because the environmental pollution that vehicle exhaust produced and the saving energy.In addition, the present invention can also cooperate the police to carry out the interim road closure of occasion or rally or the issue of important information.
Purpose of the present invention, feature and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
Description of drawings
Fig. 1 is the system principle synoptic diagram of a preferred embodiment of a kind of forecast of urban traffic of the present invention and traffic information inducement system.
Fig. 2 be in the preferred embodiment of a kind of forecast of urban traffic of the present invention and traffic information inducement system data analysis and the module diagram of prognoses system.
Embodiment
As shown in Figure 1, a kind of forecast of urban traffic of the present invention and traffic information inducement system are made of traffic information collection subsystem 1, communication subsystem 2, transport information overall treatment platform 3, transport information issue subsystem 4 and closed-circuit television watchdog subsystem 5.Described traffic information collection subsystem 1 is realized obtaining of traffic data.This subsystem comprises existing coil collecting device, newly-increased toroid winding collecting device, video data acquiring equipment, other collecting device and artificial information acquisition.Newly-increased Loop Vehicle Detector adopts communication that information is sent to and induces control center, the information of Loop Vehicle Detector also is sent to information by communication and induces control center, the information of video data acquiring device, SCATS all is sent to information by optical fiber or ADSL mode and induces control center, and these information will be as the basic traffic data of overall treatment platform.Transport information overall treatment platform 3 is realized analysis, fusion and the prediction of traffic data, can obtain the Changing Pattern of the network of communication lines magnitude of traffic flow through handling, thereby makes the prediction of science traffic variation tendency accurately, and these predict the outcome and are used for the transport information issue.Its function mainly contains: the integrated fusion treatment of the reception of traffic data, traffic data, the transmission of transport information.The mode that described communication subsystem 2 adopts wire communication to combine with radio communication.Described transport information issue subsystem 4 is directly towards vehicle.Adopt variable information plate (comprising variable information board, local ductor and mobile advices plate) issue Real-time Traffic Information, according to wide area induce, induce the part, traffic behavior issue is induced, movable type is induced four levels that vehicle is induced, thereby improved the traffic circulation efficient of road network effectively.According to the overall system requirement, variable information plate published method is adopted in the decision of this engineering.Described closed-circuit television watchdog subsystem (CCTV system) the 5th integrates an organic infosystem of video image information collection, transmission, demonstration and management function, is mainly used in the traffic administration commanding and by this system traffic, the magnitude of traffic flow, accident is observed, confirmed.In order to reach purpose fast and accurately, on traffic information collection, processing, base of prediction, before the information issue, often need manually confirm by the CCTV rig camera; After the information issue, need again inducing effect to observe.This just needs the CCTV rig camera that bridge tunnel and important highway section, crossing are reached omnidistance non-blind area supervision, only in this way could provide reliable foundation for operating personnel.Real-time Transmission is carried out in the collection of traffic data.The transport information of gathering need be passed through cable network, wireless network transmissions to information processing centre.The mode that communication subsystem 2 in the system adopts wire communication to combine with radio communication realizes.Variable information plate (comprising variable information board, local ductor and vehicle-mounted advices plate) published method is mainly adopted in the issue of transport information, and its communication mode also mainly adopts the wireless data transmission mode.
CCTV subsystem 5 is as the assistant subsystem of traffic information inducement system, and the supervision image of a large amount of real-time road traffic can be provided.In real time the transmission mode of monitoring image can adopt the mode of wired fiber optic cable communications, also can use the IP Metropolitan Area Network (MAN) of telecommunication department construction and the monitoring remote video dedicated platform mode of setting up on this broadband network basis realizes.
As shown in Figure 2, be provided with data analysis and prognoses system in the described transport information overall treatment platform 3, this is place, core of the present invention.Described data analysis and prognoses system have realized the utilization to magnitude of traffic flow presence information, data mining to historical information database, prediction algorithm, fuzzy control is induced, functions such as the induction information distribution effect factor, wherein the forecasting traffic flow algorithm that neural network prediction method (model prediction) combines with nonparametric Regression Model method (excavating prediction based on historical data) is adopted in the traffic flow forecasting reasoning, and based on fuzzy control induce the strategy sudden traffic congestion factor is taken into account, adopt intelligent fuzzy to induce control strategy, and certain decision support is provided.
The starting point of the forecasting traffic flow algorithm that employing neural network prediction method combines with the nonparametric Regression Model method is: just can train neural network from implementing beginning, the instant accurately transport information of issue and only during this time based on this induction information, and do not carry out or seldom predict, through training after a while, neural network should have reasonable performance, then can mainly rely on neural network and predict, and externally issue induction information based on prediction.In addition, begin just can set up traffic information database from system implementation according to requirement based on data mining, carry out traffic information predicting according to historical data and lay the first stone for later, when the maturation on opportunity, then can be about to the use that combines of two class Forecasting Methodologies, can supplement each other, realize higher prediction accuracy.
A distinguishing feature of the present invention is to have considered that traffic forecast and inducible system are nonlinear feedback systems, therefore designed this factor of the effect factor as the later effect feedback of induction information issue, and be introduced in the traffic forecast algorithm description actual traffic phenomenon that the introducing of this factor will be more objective and accurate.This factor can obtain result comparatively accurately by traffic study.
Intelligent Fuzzy Control is another characteristic of the present invention, and there are a large amount of random disturbance factors in the actual traffic system, and the situation in future be inferred or be described to all algorithm and models all can not in entirely accurate ground, and fully accurate control can not exist.Adopt intelligentized fuzzy control, by continuous collection---prediction---induce circulation, constantly adjust and induce strategy and induction information dynamics, can dynamically optimize traffic network, even can tackle paroxysmal traffic events.
Claims (5)
1, forecast of urban traffic and traffic information inducement system, by the traffic information collection subsystem, communication subsystem, transport information overall treatment platform, transport information issue subsystem and closed-circuit television watchdog subsystem constitute, it is characterized in that: described traffic information collection subsystem is connected with transport information overall treatment platform by described communication subsystem, described closed-circuit television watchdog subsystem is connected with transport information overall treatment platform by described communication subsystem, described transport information overall treatment platform is connected with described transport information issue subsystem by communication subsystem, described traffic information collection subsystem is gathered the traffic information data at road scene and is passed to described transport information overall treatment platform, described transport information overall treatment platform carries out Treatment Analysis to described traffic information data, obtain induction information, by described transport information issue subsystem described induction information is issued to the road scene again, described closed-circuit television watchdog subsystem is delivered to transport information overall treatment platform with the video information at road scene and carries out manually auxiliary monitoring, be provided with data analysis and prognoses system in the described transport information overall treatment platform, described data analysis and prognoses system are by the current situation of traffic database, the traffic historical data base, predicting unit and control induce the unit to constitute, the basic data that described data analysis and prognoses system utilize described current situation of traffic database and traffic historical data base to provide is carried out multidimensional data analysis, described predicting unit and control induce the unit to adopt neural network prediction method and nonparametric Regression Model method to carry out forecasting traffic flow, and utilize the effect factor that draws from road site traffic information data to feed back in predicting unit and predict adjustment, described control induces the unit to adopt the Intelligent Fuzzy Control method to carry out circle collection, prediction, induce.
2, forecast of urban traffic as claimed in claim 1 and traffic information inducement system is characterized in that: described traffic information distribution system adopts variable information plate issue Real-time Traffic Information.
3, forecast of urban traffic as claimed in claim 1 and traffic information inducement system is characterized in that: described traffic information distribution system according to wide area induce, induce the part, traffic behavior issue is induced, movable type induces four levels that vehicle is induced.
4, forecast of urban traffic as claimed in claim 1 and traffic information inducement system is characterized in that: the mode that described communication subsystem adopts wire communication mode or communication or wire communication to combine with radio communication is worked.
5, forecast of urban traffic as claimed in claim 1 and traffic information inducement system is characterized in that: be provided with annular magnetic test coil or video data detecting sensor in the described traffic information collection subsystem.
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