CN109003459A - A kind of regional traffic signal control method and system based on layering stream calculation - Google Patents
A kind of regional traffic signal control method and system based on layering stream calculation Download PDFInfo
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- CN109003459A CN109003459A CN201810782946.6A CN201810782946A CN109003459A CN 109003459 A CN109003459 A CN 109003459A CN 201810782946 A CN201810782946 A CN 201810782946A CN 109003459 A CN109003459 A CN 109003459A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/20—Software design
- G06F8/24—Object-oriented
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/547—Remote procedure calls [RPC]; Web services
- G06F9/548—Object oriented; Remote method invocation [RMI]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/26—Government or public services
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
- G08G1/0133—Traffic data processing for classifying traffic situation
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
Abstract
The present invention provides a kind of regional traffic signal control method based on layering stream calculation, comprising: 1, using open source stream calculation frame build the software architecture of regional traffic whistle control system；2, data interface tier is realized in stream calculation frame；3, data cleansing layer is realized in stream calculation frame；4, condition evaluation layer is realized in stream calculation frame；5, control optimization layer is realized in stream calculation frame；6, control instruction layer is realized in stream calculation frame；7, the data channel between each layering is established, according to actual data stream, each layer is sequentially connected to realize the function of regional traffic whistle control system, jar file is packaged into after the completion of local dry run, debugging；8, start server, packed jar file is submitted to give regional traffic whistle control system, after submitting successfully, regional traffic whistle control system starts to work the process designed according to user.The present invention has low latency, distribution, good characteristic highly fault tolerant.
Description
Technical field
The present invention relates to field of intelligent transportation technology more particularly to a kind of regional traffic signal controls based on layering stream calculation
Method and system processed.
Background technique
As one of the important development direction for alleviating urban traffic blocking, the control of regional traffic signal is intended to examine using vehicle
It surveys on the basis of the traffic condition of device sensing region, series of computation, analysis and decision by regional traffic signal control algolithm,
It is last main by networking road teleseme change signal lamp operation, realize the intervention and control to regional traffic.From 1963
Since first set point coordination induction control signal system occurs in Toronto city, constantly there is new regional traffic letter
Number control system is suggested and is applied in actual traffic management and control, such as TRANSYT, SCOOT system of Britain, the big benefit of Australia
Sub- SCATS system etc..
Regional traffic whistle control system not only pertains only to the control algolithm of traffic signals, but also including inherent number
According to all too many levels and external human-computer interactions abundant such as communication, processing, for example including monitoring of tools, long-range control, flow point
Analysis etc., or even need to interact with other intelligent transportation subsystems, it is a complexity, large-scale software systems.However, existing
Regional traffic whistle control system study most autofocus control algorithm itself, have ignored the software performance of control system itself
And the scalability and ease for maintenance of system.
A kind of " traffic signal control system building method and control system based on stream calculation " is disclosed in the prior art,
See publication No. are as follows: 104882007 A of CN, date of publication are as follows: on 09 02nd, 2015 Chinese invention patent, the invention provide one
Traffic signal control system building method and control system of the kind based on stream calculation, which comprises build for receiving, delaying
The data access module of the data traffic signal sent by data acquisition module deposited and forwarded to distributed stream computing system
Software development environment and design data AM access module；Build the distributed flowmeter for receiving and handling the data traffic signal
The software environment of calculation system；Design the topology of distributed stream computing system；According to the Topology g eneration and to the distributed stream
Each node of computing system submits JAR packet.Have in the patent:
(1) patent is to describe how to build traffic signal control system based on Storm stream calculation frame, and this patent
Which kind of do not limit using stream calculation Computational frame (oneself can also realize a stream calculation frame)；
(2) patent describes the composition of system by the way of module, and every kind of module is all stated in corresponding Storm
Spout or Bolt, system are finally constituted the Topology in Storm；This patent carries out System describe, structure using stratified form
It is apparent, it is easier to develop and safeguard, and be just able to achieve without specific technology, more versatility, two patents are to system
Isolation it is different, also determine that implementation method and route are different；
(3) patent only focuses on the building method of traffic signal control system, is not related to specific signal control method (i.e.
Specifically how to control traffic signals)；This patent then pays close attention to building method and control method simultaneously, points out in control optimization layer
Specific three generic operation.
Summary of the invention
One of the technical problem to be solved in the present invention is to provide a kind of regional traffic signal control based on layering stream calculation
Method processed.
One of problem of the invention is achieved in that a kind of regional traffic signal controlling party based on layering stream calculation
Method includes the following steps:
Step 1, the software architecture that regional traffic whistle control system is built using open source stream calculation frame；
Step 2 realizes data interface tier in stream calculation frame, is examined by network from road teleseme, the vehicle at scene
It surveys in device or third party system and obtains traffic data；
Step 3 realizes data cleansing layer in stream calculation frame, to the dirty number in received different types of traffic data
According to being cleaned；
Step 4 realizes condition evaluation layer in stream calculation frame, according to the traffic data after cleaning to different traffic zones
State assessed；
Step 5 realizes control optimization layer in stream calculation frame, to controllable traffic signals equipment various in traffic zone
Prioritization scheme is calculated；
Step 6 realizes control instruction layer in stream calculation frame, by controllable traffic signals equipment various in traffic zone
Prioritization scheme is converted into corresponding device directive, and is handed down to corresponding controllable traffic signals equipment by network and is controlled；
Step 7, the data channel established between each layering are sequentially connected data interface tier, data according to actual data stream
Cleaning layer, condition evaluation layer control optimization layer and control instruction layer to realize the function of regional traffic whistle control system, at this
Simulation operation, is packaged into jar file after the completion of debugging；
Step 8, starting server, submit packed jar file to give regional traffic whistle control system, submit successfully
Afterwards, regional traffic whistle control system starts to work the process designed according to user.
Further, in the step 1 increase income stream calculation frame using Storm, Spark Streaming or with
The independently developed stream calculation platform of Java language.
Further, the step 2 specifically:
Using the data-interface Class A in written in Java data interface tier, using REST API, WebSockets and
MQTT data communication technology is realized and is obtained from the road teleseme, wagon detector or third party system at scene by network
Take the function of traffic data；Traffic data is obtained from different types of data source, the data-interface for needing corresponding realization different
Concurrency is arranged according to multithreading according to the quantity of every class data source in Class A, every class data-interface Class A.
Further, the step 3 specifically:
Using the data cleansing Class B in written in Java data cleansing layer, realize to received different types of traffic
Dirty data in data is cleaned, and the dirty data includes wrong data, redundant data, loses data and time point drift
It moves；For different types of traffic data, data cleansing the Class B, every class data cleansing Class for needing corresponding realization different
B includes a plurality of cleaning steps, and every class data cleansing Class B is arranged simultaneously according to the quantity of every class traffic data according to multithreading
Hair degree.
Further, the step 4 specifically:
Using the condition evaluation Class C in written in Java condition evaluation layer, realize according to the traffic data pair after cleaning
The state of different traffic zones is assessed；The traffic zone be it is artificial divide or according to rule generation, for difference
Traffic zone, need it is corresponding realize different condition evaluation Class C, every class status assessment Class C is according to traffic zone
Quantity according to multithreading be arranged concurrency.
Further, the step 5 specifically:
Optimize Class D using the control in written in Java control optimization layer, realizes to controllable friendships various in traffic zone
The prioritization scheme of messenger equipment is calculated, which is specifically attributed to four generic operations: first is that utilizing biography in intersection
The induction control algolithm of system shortens or extends the clearance time of a direction；Second is that being entered in intersection or ring road mouth according to downstream
Traffic flow detecting device at mouthful judges whether congestion, to let pass or forbid some direction, to avoid downstream congestion；Third is that tide
Nighttide lane, using flow threshold set switching law, when a direction the magnitude of traffic flow be more than given threshold after, tide lane to
Its switch, make the direction can through lane increase；Fourth is that setting switching rule using queue length threshold value to variable guided vehicle road
Then, after the queue length of a certain steering in intersection is more than given threshold, it can be changed guided vehicle road and switch to it, the direction is enable to be used
Increase in lane；Wherein, it when optimizing control to tide lane and variable guided vehicle road using threshold value setting switching law, needs
Be arranged covering all scenario threshold value setting switching law, avoid the occurrence of controllable traffic signals equipment it is random can according to situation,
And switch every time all and preferably must be held in the time of setting, in order to avoid frequent switching；For different types of controllable traffic signals
Equipment, needs the control optimization Class D that corresponding realization is different, and every class control optimizes Class D and believed according to the controllable traffic of every class
Concurrency is arranged according to multithreading in the quantity of number equipment.
Further, the step 6 specifically:
Using the control instruction Class E in written in Java control instruction layer, controllable traffic various in traffic zone are believed
The prioritization scheme of number equipment is converted into corresponding device directive, and is handed down to corresponding controllable traffic using corresponding communication modes
Signalling arrangement is controlled；For different types of controllable traffic signals equipment, the control instruction for needing corresponding realization different
Class E, every class control instruction Class E are arranged according to the quantity of the controllable traffic signals equipment of every class according to multithreading concurrent
Degree.
The second technical problem to be solved by the present invention is to provide a kind of regional traffic signal control based on layering stream calculation
System processed.
The two of problem of the invention are achieved in that a kind of regional traffic signal control system based on layering stream calculation
System, comprising:
Data interface tier: it is responsible for through network from the road teleseme, wagon detector or third party system at scene
Obtain traffic data；
Data cleansing layer: it is responsible for cleaning the dirty data in received different types of traffic data；
Condition evaluation layer: it is responsible for being assessed according to state of the traffic data after cleaning to different traffic zones；
Control optimization layer: it is responsible for calculating the prioritization scheme of controllable traffic signals equipment various in traffic zone；
Control instruction layer: it is responsible for for the prioritization scheme of controllable traffic signals equipment various in traffic zone being converted into corresponding
Device directive, and corresponding controllable traffic signals equipment is handed down to by network.
The present invention has the advantages that the present invention is to ensure software system using clearly layered structure on the basis of stream calculation
System has good maintainability, and different data processing algorithm and signal control can be updated for actual demand dynamic and is calculated
Method, system have low latency, distribution, good characteristic highly fault tolerant.
Detailed description of the invention
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is a kind of execution flow chart of the regional traffic signal control method based on layering stream calculation of the present invention.
Fig. 2 is that figure is moved towards in a kind of data control of the regional traffic signal control method based on layering stream calculation of the present invention.
Specific embodiment
To be clearer and more comprehensible the present invention, now with a preferred embodiment, and attached drawing is cooperated to be described in detail below.
The basic principle of regional traffic signal control is passed through using on the basis of the traffic condition of wagon detector sensing region
Series of computation, the analysis and decision of regional traffic signal control algolithm are crossed, the last main networking road teleseme that passes through changes
Signal lamp operation, realizes the intervention and control to regional traffic.
Therefore, as shown in Fig. 2, the present invention by regional traffic whistle control system be divided into data interface tier, data cleansing layer,
Condition evaluation layer, control five parts such as optimization layer and control instruction layer, in which:
1) data interface tier: it is responsible for obtaining the friendship detected from road teleseme, the wagon detector at scene by network
Logical data, or carried out in real time with third party system (such as taxi, bus monitoring system, electronic police, bayonet system)
Interaction obtains traffic data.
2) data cleansing layer: it is responsible for cleaning the dirty data in received different types of traffic data.In practice,
Because, often there is certain dirty data in the reasons such as construction quality, detection device failure, detection environmental abnormality, network failure,
It specifically includes that wrong data, redundant data, lose data and time point drift.
3) condition evaluation layer: it is responsible for being assessed according to state of the traffic data after cleaning to different traffic zones, both
It can be used as the effect that independent module estimation implements certain traffic management measure in practice, also can be used as region traffic control algorithm
Input.
4) control optimization layer: be responsible for various controllable traffic signals equipment in decision traffic zone (such as intersection signal control device:
Signal lamp, monitoring device: video detection, induction coil, microwave detection) prioritization scheme and calculated, can specifically be attributed to
Three generic operations: first is that in intersection or ring road mouth, when letting pass or forbidding some direction, shortening or extend the clearance of a direction
Between；Second is that tide lane is converted；Third is that variable guided vehicle road conversion.
5) control instruction layer: it is responsible for that various controllable traffic signals equipment in the calculated traffic zone of optimization layer will be controlled
Prioritization scheme is converted to corresponding control instruction, is then sent to corresponding traffic signalization equipment by network and is controlled
System.
As depicted in figs. 1 and 2, a kind of regional traffic signal control method based on layering stream calculation of the invention, including
Following steps:
Step 1, the software architecture that regional traffic whistle control system is built using open source stream calculation frame；
Currently, the open source stream calculation frame of market maturation has Storm, Spark Streaming etc., can directly utilize,
Can also be with self-developing, such as: use Java language self-developing stream calculation platform, the present invention in stream calculation frame using
Storm, Spark Streaming or with the independently developed stream calculation platform of Java language.Without loss of generality, the present invention is to use
It is illustrated for Java language self-developing stream calculation platform.
Step 2 realizes data interface tier in stream calculation frame, is examined by network from road teleseme, the vehicle at scene
It surveys in device or third party system and obtains traffic data；
Using the data-interface Class A in written in Java data interface tier, using REST API, WebSockets and
MQTT data communication technology is realized and is obtained from the road teleseme, wagon detector or third party system at scene by network
The function for evidence of fetching, belongs to routine techniques realization rate, wherein REST API:REST is REpresentational State
The abbreviation of Transfer can obtain data from any equipment for supporting HTTP request or system by the technology；
WebSockets: being communication function most powerful in HTML5, it defines a full-duplex communication channel, only by Web
One Socket can be communicated；MQTT:Message Queuing Telemetry Transport, i.e. message queue are distant
Transmission is surveyed, is an instant communication protocol of IBM exploitation, it is possible to the important component as Internet of Things；From different type
Data source obtain traffic data, need corresponding to realize different data-interface Class A, every class data-interface Class A root
Concurrency is set according to multithreading according to the quantity of every class data source.
Step 3 realizes data cleansing layer in stream calculation frame, to the dirty number in received different types of traffic data
According to being cleaned；
Using the data cleansing Class B in written in Java data cleansing layer, realize to received different types of traffic
Dirty data in data is cleaned, and the dirty data includes wrong data, redundant data, loses data and time point drift
It moves, this respect has had more available research achievement at present, such as the wrong data recognition methods based on threshold value, based on number
According to the redundant data processing method of fusion, wrong data amendment and polishing method, rule-based time based on regression model
Point drift processing method etc.；For different types of traffic data, the data cleansing Class B for needing corresponding realization different, often
Class data cleansing Class B contains a plurality of cleaning steps, and every class data cleansing Class B is according to the number of every class traffic data
Concurrency is arranged according to multithreading in amount.
Step 4 realizes condition evaluation layer in stream calculation frame, according to the traffic data after cleaning to different traffic zones
State assessed；
Using the condition evaluation Class C in written in Java condition evaluation layer, realize according to the traffic data pair after cleaning
The state of different traffic zones is assessed, and specific appraisal procedure can refer to national proposed standard GAT52722016 " road traffic
Control mode signal part 2 prevailing state and control performance evaluation index and method "；The traffic zone be it is artificial divide or
According to rule generation, for example, each intersection and its 1 kilometer range of surrounding are as an assessment area.For difference
Traffic zone, need it is corresponding realize different condition evaluation Class C, every class status assessment Class C is according to traffic zone
Quantity according to multithreading be arranged concurrency.
Step 5 realizes control optimization layer in stream calculation frame, to controllable traffic signals equipment various in traffic zone
Prioritization scheme is calculated；
Optimize Class D using the control in written in Java control optimization layer, realizes to controllable friendships various in traffic zone
The prioritization scheme of messenger equipment is calculated, which is specifically attributed to four generic operations: first is that utilizing biography in intersection
The induction control algolithm of system shortens or extends the clearance time of a direction；Second is that being entered in intersection or ring road mouth according to downstream
Traffic flow detecting device at mouthful judges whether congestion, to let pass or forbid some direction, to avoid downstream congestion；Third is that tide
Nighttide lane, using flow threshold set switching law, when a direction the magnitude of traffic flow be more than given threshold after, tide lane to
Its switch, make the direction can through lane increase；Fourth is that setting switching rule using queue length threshold value to variable guided vehicle road
Then, after the queue length of a certain steering in intersection is more than given threshold, it can be changed guided vehicle road and switch to it, the direction is enable to be used
Increase in lane；Wherein, it when optimizing control to tide lane and variable guided vehicle road using threshold value setting switching law, needs
Be arranged covering all scenario threshold value setting switching law, avoid the occurrence of controllable traffic signals equipment it is random can according to situation,
And switch every time all and preferably must be held in the time of setting, in order to avoid frequent switching；For different types of controllable traffic signals
Equipment, needs the control optimization Class D that corresponding realization is different, and every class control optimizes Class D and believed according to the controllable traffic of every class
Concurrency is arranged according to multithreading in the quantity of number equipment.
Step 6 realizes control instruction layer in stream calculation frame, by controllable traffic signals equipment various in traffic zone
Prioritization scheme is converted into corresponding device directive, and is issued using corresponding communication modes (such as fiber optic Ethernet, 4G/5G are netted)
It is controlled to corresponding controllable traffic signals equipment；
Using the control instruction Class E in written in Java control instruction layer, controllable signals various in traffic zone are set
Standby prioritization scheme is converted into corresponding device directive, and is handed down to corresponding controllable traffic signals equipment by network and is controlled
System；For different types of controllable traffic signals equipment, the control instruction Class E that corresponding realization is different, every class control are needed
Instruct Class E that concurrency is set according to multithreading according to the quantity of every class traffic signals equipment.
Step 7 establishes data channel between each layering；
On the basis of step 2-6, according to actual data stream, all kinds of Class A-Class E are sequentially connected to realize area
The function of domain traffic signal control system is packaged into jar file after the completion of local dry run, debugging.
Step 8, starting server, submit packed jar file to give regional traffic whistle control system；
In this step, start the Java context of server first, be then packaged using the submission of Java order line script
Good jar file, submission process is also the upper line process of regional traffic whistle control system, (is submitted successfully once completing to submit
Afterwards), regional traffic whistle control system starts to work the process designed according to user.
Although specific embodiments of the present invention have been described above, those familiar with the art should be managed
Solution, we are merely exemplary described specific embodiment, rather than for the restriction to the scope of the present invention, it is familiar with this
The technical staff in field should be covered of the invention according to modification and variation equivalent made by spirit of the invention
In scope of the claimed protection.
Claims (8)
1. a kind of regional traffic signal control method based on layering stream calculation, characterized by the following steps:
Step 1, the software architecture that regional traffic whistle control system is built using open source stream calculation frame；
Step 2 realizes data interface tier in stream calculation frame, road teleseme, wagon detector by network from scene
Or traffic data is obtained in third party system；
Step 3, in stream calculation frame realize data cleansing layer, to the dirty data in received different types of traffic data into
Row cleaning；
Step 4 realizes condition evaluation layer in stream calculation frame, according to the traffic data after cleaning to the shape of different traffic zones
State is assessed；
Step 5 realizes control optimization layer, the optimization to controllable traffic signals equipment various in traffic zone in stream calculation frame
Scheme is calculated；
Step 6 realizes control instruction layer in stream calculation frame, by the optimization of controllable traffic signals equipment various in traffic zone
Scheme is converted into corresponding device directive, and is handed down to corresponding controllable traffic signals equipment by network and is controlled；
Step 7, the data channel established between each layering are sequentially connected data interface tier, data cleansing according to actual data stream
Layer, condition evaluation layer control optimization layer and control instruction layer to realize the function of regional traffic whistle control system, in local mould
Quasi- operation, is packaged into jar file after the completion of debugging；
Step 8, starting server, submit packed jar file to give regional traffic whistle control system, after submitting successfully, area
Domain traffic signal control system starts to work the process designed according to user.
2. a kind of regional traffic signal control method based on layering stream calculation as described in claim 1, it is characterised in that: institute
Stream calculation frame of increasing income in step 1 is stated using Storm, Spark Streaming or with the independently developed stream of Java language
Computing platform.
3. a kind of regional traffic signal control method based on layering stream calculation as described in claim 1, it is characterised in that: institute
State step 2 specifically:
Using the data-interface Class A in written in Java data interface tier, REST API, WebSockets and MQTT number are utilized
According to mechanics of communication, realizes and traffic is obtained from the road teleseme, wagon detector or third party system at scene by network
The function of data；Traffic data is obtained from different types of data source, the data-interface Class A for needing corresponding realization different,
Concurrency is arranged according to multithreading according to the quantity of every class data source in every class data-interface Class A.
4. a kind of regional traffic signal control method based on layering stream calculation as described in claim 1, it is characterised in that: institute
State step 3 specifically:
Using the data cleansing Class B in written in Java data cleansing layer, realize to received different types of traffic data
In dirty data cleaned, the dirty data includes wrong data, redundant data, loses data and time point drift；Needle
To different types of traffic data, the data cleansing Class B for needing corresponding realization different, every class data cleansing Class B packet
Containing a plurality of cleaning steps, every class data cleansing Class B is arranged according to the quantity of every class traffic data according to multithreading concurrent
Degree.
5. a kind of regional traffic signal control method based on layering stream calculation as described in claim 1, it is characterised in that: institute
State step 4 specifically:
Using the condition evaluation Class C in written in Java condition evaluation layer, realize according to the traffic data after cleaning to difference
The state of traffic zone is assessed；The traffic zone be it is artificial divide or according to rule generation, for different friendships
Logical region needs to correspond to and realizes different condition evaluation Class C, every class status assessment Class C according to the number of traffic zone
Concurrency is arranged according to multithreading in amount.
6. a kind of regional traffic signal control method based on layering stream calculation as described in claim 1, it is characterised in that: institute
State step 5 specifically:
Optimize Class D using the control in written in Java control optimization layer, realizes and controllable traffic various in traffic zone are believed
The prioritization scheme of number equipment is calculated, which is specifically attributed to four generic operations: first is that in intersection using traditional
Incude the clearance time that control algolithm shortens or extends a direction；Second is that in intersection or ring road mouth, at downstream entrance
Traffic flow detecting device judge whether congestion, to let pass or forbid some direction, to avoid downstream congestion；Third is that tide vehicle
Road sets switching law using flow threshold, and after the magnitude of traffic flow of a direction is more than given threshold, tide lane is cut to it
Change, make the direction can through lane increase；Fourth is that switching law is set using queue length threshold value to variable guided vehicle road, when
The queue length of a certain steering in intersection makes the direction that can use lane more than after given threshold, can be changed guided vehicle road to its switching
Increase；Wherein, it when optimizing control to tide lane and variable guided vehicle road using threshold value setting switching law, needs to be arranged
Cover all scenario threshold value set switching law, avoid the occurrence of controllable traffic signals equipment it is random can according to situation, and
Switching all preferably must be held in the time of setting every time, in order to avoid frequent switching；For different types of controllable traffic signals equipment,
The control optimization Class D that corresponding realization is different is needed, every class control optimization Class D is according to the controllable traffic signals equipment of every class
Quantity according to multithreading be arranged concurrency.
7. a kind of regional traffic signal control method based on layering stream calculation as described in claim 1, it is characterised in that: institute
State step 6 specifically:
Using the control instruction Class E in written in Java control instruction layer, controllable traffic signals various in traffic zone are set
Standby prioritization scheme is converted into corresponding device directive, and is handed down to corresponding controllable traffic signals using corresponding communication modes
Equipment is controlled；For different types of controllable traffic signals equipment, the control instruction Class for needing corresponding realization different
Concurrency is arranged according to multithreading according to the quantity of the controllable traffic signals equipment of every class in E, every class control instruction Class E.
8. a kind of regional traffic whistle control system based on layering stream calculation, it is characterised in that: include:
Data interface tier: it is responsible for obtaining from the road teleseme, wagon detector or third party system at scene by network
Traffic data；
Data cleansing layer: it is responsible for cleaning the dirty data in received different types of traffic data；
Condition evaluation layer: it is responsible for being assessed according to state of the traffic data after cleaning to different traffic zones；
Control optimization layer: it is responsible for calculating the prioritization scheme of controllable traffic signals equipment various in traffic zone；
Control instruction layer: it is responsible for the prioritization scheme of controllable traffic signals equipment various in traffic zone being converted into corresponding equipment
Instruction, and corresponding controllable traffic signals equipment is handed down to by network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810782946.6A CN109003459B (en) | 2018-07-17 | 2018-07-17 | Regional traffic signal control method and system based on hierarchical flow calculation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810782946.6A CN109003459B (en) | 2018-07-17 | 2018-07-17 | Regional traffic signal control method and system based on hierarchical flow calculation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109003459A true CN109003459A (en) | 2018-12-14 |
| CN109003459B CN109003459B (en) | 2020-08-11 |
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