CN109799729A - Car networking emulation platform construction method based on VISSIM and MATLAB - Google Patents
Car networking emulation platform construction method based on VISSIM and MATLAB Download PDFInfo
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- CN109799729A CN109799729A CN201811634955.7A CN201811634955A CN109799729A CN 109799729 A CN109799729 A CN 109799729A CN 201811634955 A CN201811634955 A CN 201811634955A CN 109799729 A CN109799729 A CN 109799729A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The invention discloses a kind of car networking emulation platform construction method based on VISSIM and MATLAB, this method is including the use of VISSIM analogue simulation vehicle and saves road network to storage catalogue, VISSIM com interface object is registered in VISSIM and VISSIM COM service interface is created in MATLAB, road network is loaded by road network storage catalogue using MATLAB and simulation parameter is set, obtain traffic object information in real time using MATLAB, it calculates traffic model optimum results and feeds back in VISSIM, control is optimized to traffic object according to optimum results using VISSIM.The present invention can rapidly build car networking emulation platform and realize the various algorithms under car networking environment, greatly reduce programming code workload, the effect of various traffic models and algorithm can be tested simultaneously, with very strong practicability, have great significance to the exploitation of the following various intelligent transportation models and control algolithm.
Description
Technical field
The invention belongs to traffic engineering technical fields, and in particular to a kind of car networking emulation based on VISSIM and MATLAB
Platform construction method.
Background technique
With the development of car networking technology (bus or train route collaboration, collaborative truck), to acquire richer comprehensive traffic information wound
Condition is made.Car networking technology pass through between trackside facility and car-mounted device, it is vehicle-mounted communicated wirelessly between car-mounted device,
Can not only real-time collecting vehicle location and velocity information, the output data that can also collect traffic signalization includes prolonging for vehicle
It misses and information, the development for traffic signals dynamic timing method such as queuing provides opportunity.Meanwhile with car networking technology application phase
The research of the various new traffic models closed is also unfolded therewith.But these are studied current common difficulty and are all how to verify new friendship
The validity of logical model.In general, can be verified by following three kinds of methods: first is that field test, is most directly effective
One of verification method, but its is at high cost, poor feasibility；Second is that verifying by mathematical model, have calculating simple and convenient but past
Toward excessive simplification has been done to actual traffic operation conditions, result credibility is low；Third is that building and showing by micro-simulation simulator
Real similar scene, the characteristics of verifying the validity of new traffic model, consider reality and new model due to it, so
It is considered current most efficient method.
Currently, it is few about the relevant document of VISSIM secondary development, and VISSIM and EXCEL VBA are had focused largely on,
Or the mixing of multilingual is called.When more particularly to realizing complicated algorithm, EXCEL VBA, VC++, VB, JAVA etc. are compiled
Cheng Yuyan is not since it includes function library, and many basic functions require oneself and write, larger workload, and efficiency is lower.
Summary of the invention
Goal of the invention of the invention is: in order to solve, directly big to VISSIM secondary development programming difficulty, time-consuming and real
The problems such as existing complex control algorithm is difficult, the invention proposes a kind of car networking emulation platform structure based on VISSIM and MATLAB
Construction method.
The technical scheme is that a kind of car networking emulation platform construction method based on VISSIM and MATLAB, packet
Include following steps:
A, various traffic circulation performance indicators are run and extracted using VISSIM analogue simulation vehicle, and creation emulation road network is same
Shi Baocun road network is to storage catalogue；
B, VISSIM com interface object is registered in VISSIM, and creates VISSIM COM clothes in MATLAB
Business interface；
C, road network is loaded by the road network storage catalogue saved in step A using MATLAB, and simulation parameter is set；
D, it is run and is emulated using MATLAB, traffic pair is obtained by VISSIM COM service interface in real time in simulation process
As and its multidate information, calculate traffic model optimum results, and optimum results fed back in VISSIM；
E, control is optimized to traffic object according to optimum results using VISSIM.
Further, traffic simulation is carried out to urban transportation and public transport operation using VISSIM in the step A to build
Mould.
Further, MATLAB is counted by the VISSIM COM service interface created with VISSIM in the step D
According to interaction.
Further, traffic model optimum results are calculated in the step D specifically:
Data interaction is carried out by the VISSIM COM service interface and VISSIM of creation using MATLAB, obtains hand in real time
Logical object and its multidate information, are calculated using traffic object and its multidate information of the traffic model to acquisition, obtain traffic
The optimum results of object.
Further, the traffic model includes traffic object Optimized model and Controlling model.
The beneficial effects of the present invention are: the present invention runs using VISSIM analogue simulation vehicle and extracts various traffic circulations
Performance indicator, and MATLAB is primary control program, obtains the traffic object and relevant in VISSIM by VISSIM com interface
Multidate information, and realize various traffic optimization models and control algolithm, it is finally that optimum results are anti-by VISSIM com interface
It is fed in VISSIM, realizes the control and optimization to object in VISSIM, greatly reduce programming code workload, while can
To test the effect of various traffic models and algorithm, there is very strong practicability, to the following various intelligent transportation models and control
The exploitation of algorithm has great significance.
Detailed description of the invention
Fig. 1 is the flow diagram of car networking emulation platform construction method of the invention；
Fig. 2 is car networking emulation platform schematic diagram in the embodiment of the present invention；
Fig. 3 is car networking emulation platform interface principle schematic diagram in the embodiment of the present invention；
Fig. 4 is the car speed boot flow schematic diagram based on car networking emulation platform in the embodiment of the present invention；
Fig. 5 is that schematic diagram is realized in the car speed guidance in the embodiment of the present invention based on car networking emulation platform；
Fig. 6 is vehicle space-time trajectory figure in the embodiment of the present invention；
Fig. 7 is the optimization schematic diagram of vehicle space-time trajectory in the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
As shown in Figure 1, being the flow diagram of car networking emulation platform construction method of the invention.One kind being based on VISSIM
With the car networking emulation platform construction method of MATLAB, comprising the following steps:
A, various traffic circulation performance indicators are run and extracted using VISSIM analogue simulation vehicle, and creation emulation road network is same
Shi Baocun road network is to storage catalogue；
B, VISSIM com interface object is registered in VISSIM, and creates VISSIM COM clothes in MATLAB
Business interface；
C, road network is loaded by the road network storage catalogue saved in step A using MATLAB, and simulation parameter is set；
D, it is run and is emulated using MATLAB, traffic pair is obtained by VISSIM COM service interface in real time in simulation process
As and its multidate information, calculate traffic model optimum results, and optimum results fed back in VISSIM；
E, control is optimized to traffic object according to optimum results using VISSIM.
In step, VISSIM of the invention is a kind of simulation modeling microcosmic, based on time interval and driving behavior
Tool, the traffic modeling run to urban transportation and public transport.It can analyze under various transportation conditions, as lane is set
It sets, traffic components, traffic signals and bus station etc., the operation conditions of urban transportation and public transport is evaluation traffic engineering
The effective tool of design and urban planning scheme.
As shown in Fig. 2, for car networking emulation platform schematic diagram in the embodiment of the present invention.The present invention is using VISSIM to city
Traffic and public transport operation carry out traffic simulation modeling, to vehicle, emulation, evaluation, figure etc. in VISSIM working space
Information is handled, including general information: road network information, timing scheme, status information: vehicle-state, signal condition are commented
Valence information: vehicle delay, queue length etc..
In stepb, the present invention is using com interface in order to successfully call VISSIM simulation software in MATLAB
It is preceding that registration appropriate first is carried out to VISSIM COM Server, specifically: when installing VISSIM, VISSIM COM is installed
Server, and com interface is registered.VISSIM COM Server is the communication interface of VISSIM Yu other programs, is become
Exchange the intermediary of data and communication.After VISSIM COM Server registration, VISSIM COM service is created in MATLAB and is connect
Mouthful, it can realize in MATLAB and be interacted with VISSIM, only need to define object variable in MATLAB code, then create one
VISSIM object simultaneously assigns the variable.
When carrying out microscopic simulation using VISSIM, tend not to change pre-set ginseng in emulation in simulation process
Number, such as: flow, car speed and signal timing dial parameter；Road network information, information of vehicles, signal can not be obtained in real time simultaneously
Timing scheme and evaluation information etc..Therefore, in this case, VISSIM cannot be interacted in emulation with the external world, Bu Nengman
The exploitation of foot more complicated traffic scene emulation and traffic model.In order to assess various traffic scenes and verifying traffic mould
The effect of type, the present invention utilizes the com interface technology of VISSIM, i.e., by the various objects and external programming language connection in VISSIM
System gets up, and can use access, modification and control of the external programming language MATLAB realization to object in VISSIM, to realize
The interaction of the two.
The present invention provides second development interface VISSIM using VISSIM micro-simulation simulator for other programming tools
COM Server obtains the various attribute informations of object, while using the method for corresponding objects, can modify some attribute informations
Deng.VISSIM COM Server interfacing provides the approach of various objects inside access VISSIM for external programming tool,
Road net data, vehicle data, signal timing dial parameter, simulation parameter and evaluation is such as generated, obtained and modified according to external program to tie
Fruit etc..This secondary exploitation technology is also an important trend of current traffic simulation software, utilizes secondary development
Technology can make researcher more actively and effective to the intervention of emulation, so that the research and analysis based on emulation are closer to now
It is real.In VISSIM simulation software, mentality of designing is the thinking of object-oriented, and wherein all elements can be with being corresponding to it
Object describe, wherein object has the attribute and method of oneself.Pass through the available object of VISSIM COM Server
Various attribute informations, while using the method for corresponding objects, some attribute informations etc. can be modified.In signal time distributing conception,
Current signal time distributing conception, the light color etc. of each signal lamp, it is also possible to modify current demand signal timing can be obtained in real time
Scheme and light color.And under car networking environment, the various attribute informations of vehicle can be obtained in real time, such as: ID, position, speed and
Acceleration-deceleration etc., while speed and the acceleration-deceleration etc. that vehicle can also be modified.
In step C, the present invention passes through the road network saved in VISSIM COM service interface obtaining step A using MATLAB
Storage catalogue, MATLAB loads road network by road network storage catalogue, and relevant simulation parameter is arranged.
In step D, MATLAB of the invention can obtain the various information in VISSIM by VISSIM com interface,
Such as: road network information, signal time distributing conception, information of vehicles, the real-time status of signal lamp, vehicle delay, queue length and parking time
The information such as number, and by these information real-time storages in the working space of MATLAB.Meanwhile according to these letters obtained in real time
Breath, such as: vehicle location, speed and signal lamp state construct speed pilot model.Vehicle is reduced by method for controlling driving speed handing over
The stop delay of prong.The self-adapting signal timing designing of intersection can also be realized by obtaining flow information in real time.Such as Fig. 3
It is shown, it is car networking emulation platform interface principle schematic diagram in the embodiment of the present invention.
The present invention carries out data interaction by the VISSIM COM service interface and VISSIM of creation using MATLAB, in real time
Traffic object and its multidate information are obtained, is calculated, is obtained using traffic object and its multidate information of the traffic model to acquisition
To the optimum results of traffic object.
In step E, the present invention is using VISSIM according to the optimum results being calculated in step D using MATLAB to friendship
Logical object optimizes control.
It is flat to build the car networking emulation based on VISSIM and MATLAB for present invention combination VISSIM and MATLAB interfacing
Platform.The ability of complicated various traffic model algorithms, building are realized using VISSIM microscopic traffic flow simulation ability and MATLAB
Various advanced intelligent control algorithm platforms.The optimum results of traffic model are calculated using MATLAB powerful computing capability, then
Through VISSIM com interface feedback into VISSIM, the control to signal lamp or vehicle in VISSIM road network is realized, while
Various evaluation indexes can be obtained in real time by VISSIM com interface, are fed back into traffic model, and the phase in traffic model is corrected
Close parameter.
Present invention combination VISSIM and MATLAB interfacing, utilizes VISSIM microscopic traffic flow simulation ability and MATLAB
It realizes the ability of complicated various traffic model algorithms, constructs various advanced intelligent control algorithm emulation platforms.
The present invention calculates the optimum results of traffic model using MATLAB powerful computing capability, then passes through VISSIM COM
Interface is fed back into VISSIM, realizes the control to signal lamp or vehicle in VISSIM road network, while can also pass through VISSIM
Com interface obtains various evaluation indexes in real time, feeds back into traffic model, corrects the relevant parameter in traffic model.
Various advanced traffic models and control algolithm may be implemented in the car networking emulation platform built in the present invention, this is flat
Platform construction method uses only two kinds of popular softwares, versatile and be easily achieved, to the following various intelligent transportation models and control
The exploitation of algorithm processed has great significance.Compared with directlying adopt the programming languages such as VBA, VB, VC, JAVA, side of the invention
Method can build car networking emulation platform more quickly and realize the various algorithms under car networking environment, reduce programming code work
Amount.By playing the advantage of both softwares, the effect of various traffic models and algorithm can be tested, is had very strong practical
Property.Future can realize various increasingly complex traffic control algorithms on the platform, and the city such as based on car networking environment intersects
Mouth adaptive traffic control algorithm and intelligent vehicle navigation etc..
The present invention based on the guidance of the car speed of car networking emulation platform for being realized below, to car networking of the invention
Emulation platform construction method is described further.As shown in figure 4, for the vehicle based on car networking emulation platform in the embodiment of the present invention
Speed boot flow schematic diagram.
In step, the present invention runs and extracts various traffic circulation performance indicators using VISSIM analogue simulation vehicle,
Creation emulation road network saves road network storage catalogue simultaneously；
In stepb, the present invention is registered firstly the need of to the com interface object in VISSIM, then in MATLAB
Middle creation VISSIM COM service interface, by taking 64 VISSIM 8.0 as an example, creation service interface code is " Vissim=
actxserver('Vissim.Vissim-64.800')"；
In step C, after the present invention creates VISSIM COM service interface, MATLAB is according to the road network saved in step A
Storage catalogue is loaded directly into VISSIM road network；
In step D, it is run and is emulated using MATLAB, obtained in real time in simulation process by VISSIM COM service interface
Take the traffic relevant information of needs, such as information of vehicles, signal lamp state information；Information combination car speed by obtaining again
Optimized model optimizes car speed, and the car speed after optimization is fed back by VISSIM com interface into VISSIM；
In step E, the present invention realized according to the car speed after optimization to the guidance of car speed using VISSIM and
Control.
According to information such as the state of current signal light, the position of each vehicle, signal time distributing conception and intersection saturation volume rates,
Speed Optimized model is constructed in MATLAB, optimizes ideal time of the vehicle by intersection, and combine minimum, the maximum of vehicle
Velocity and acceleration etc. calculates the optimal velocity value of each car.Finally by VISSIM com interface, by the vehicle of each car
Speed is set as respective optimal velocity value, to achieve the purpose that its is not parking by intersection.
Car networking emulation platform based on VISSIM and MATLAB is realized as shown in figure 5, the left side is VISSIM software interface,
Realize the dynamic simulation of traffic flow；The right is MATLAB software, is primary control program, realizes data storage, and algorithm is realized
Etc. functions.Wherein, each simulation step length can calculate the optimal speed of vehicle by algorithm, and Real-time Feedback is to VISSIM
In, to realize the control and optimization to car speed.
It is as shown in Figure 6,7 to optimize forward and backward vehicle space-time trajectory difference.As shown in Figure 7, by the excellent of car speed
Change, it is not parking by intersection to realize vehicle substantially, i.e., falls too low vehicle parking number, vehicle is almost without parking.
Before optimization, since vehicle reaches intersection at random, when intersection red light, need to wait for parking.But by obtaining vehicle in real time
The state of location information and signal lamp, can be by controlling car speed, and when vehicle being made to reach intersection, intersection signal is in
Green light and no vehicle queue, so that realizing that vehicle is not parking passes through intersection.The present invention is based on VISSIM's and MATLAB
A simple speed bootstrap technique is realized on car networking emulation platform, effect is clearly.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such specific embodiments and embodiments.This field
Those of ordinary skill disclosed the technical disclosures can make according to the present invention and various not depart from the other each of essence of the invention
The specific variations and combinations of kind, these variations and combinations are still within the scope of the present invention.
Claims (5)
1. a kind of car networking emulation platform construction method based on VISSIM and MATLAB, which comprises the following steps:
A, various traffic circulation performance indicators are run and extracted using VISSIM analogue simulation vehicle, and creation emulation road network is protected simultaneously
Road network is deposited to storage catalogue；
B, VISSIM com interface object is registered in VISSIM, and creates VISSIM COM service in MATLAB and connects
Mouthful；
C, road network is loaded by the road network storage catalogue saved in step A using MATLAB, and simulation parameter is set；
D, using MATLAB run emulate, in simulation process by VISSIM COM service interface obtain in real time traffic object and
Its multidate information calculates traffic model optimum results, and optimum results is fed back in VISSIM；
E, control is optimized to traffic object according to optimum results using VISSIM.
2. the car networking emulation platform construction method based on VISSIM and MATLAB as described in claim 1, which is characterized in that
Traffic simulation modeling is carried out to urban transportation and public transport operation using VISSIM in the step A.
3. the car networking emulation platform construction method based on VISSIM and MATLAB as claimed in claim 2, which is characterized in that
MATLAB carries out data interaction by the VISSIM COM service interface and VISSIM of creation in the step D.
4. the car networking emulation platform construction method based on VISSIM and MATLAB as claimed in claim 3, which is characterized in that
Traffic model optimum results are calculated in the step D specifically:
Data interaction is carried out by the VISSIM COM service interface and VISSIM of creation using MATLAB, obtains traffic pair in real time
As and its multidate information, calculated using traffic object and its multidate information of the traffic model to acquisition, obtain traffic object
Optimum results.
5. the car networking emulation platform construction method based on VISSIM and MATLAB as claimed in claim 4, which is characterized in that
The traffic model includes traffic object Optimized model and Controlling model.
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| CN113378413B (en) * | 2021-08-12 | 2022-01-07 | 深圳市城市交通规划设计研究中心股份有限公司 | Simulation road network platform building system, method, equipment and storage medium based on Vissim |
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Application publication date: 20190524 |