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CN102610112B - Method for setting road information display board based on improved discrete model - Google Patents

Method for setting road information display board based on improved discrete model Download PDF

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CN102610112B
CN102610112B CN201210059779.5A CN201210059779A CN102610112B CN 102610112 B CN102610112 B CN 102610112B CN 201210059779 A CN201210059779 A CN 201210059779A CN 102610112 B CN102610112 B CN 102610112B
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speed
section
display board
information display
highway
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CN102610112A (en
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史忠科
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Xian Feisida Automation Engineering Co Ltd
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Xian Feisida Automation Engineering Co Ltd
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Abstract

The invention provides a method for setting a road information display board based on an improved discrete model in order to solve the problem that effective control for the traffic flow density and the running speed of a highway is difficultly realized by the aid of information of an existing information display board. Road section condition observability discriminant is defined according to a macroscopic traffic flow discrete model at an improved speed, the information display board indicates the running speed of vehicles and changes an equivalent speed in the road section condition observability discriminant by adjusting the control scheme of the vehicles at a ramp exit and a ramp entrance, the density and the speed predicted by the road section condition observability discriminant under the traffic condition of a practical road section meet required density and speed limiting conditions, and the information display board displays the control scheme of the vehicles at the ramp exit and the ramp entrance and the required running speed of the vehicles by the aid of information.

Description

A kind of method to set up of the highway information display board based on improvement discrete model
Technical field
The present invention relates to Traffic Information display board method to set up, particularly a kind of method to set up of the highway information display board based on improvement discrete model.
Background technology
Traffic is of crucial importance to the development of national economy, always as the content of focusing the consruction on of country.In recent years, China's highway, railway, water transport, urban transportation and civil aviaton's cause all obtain the development of advancing by leaps and bounds, and have begun to take shape the transportation network framework beginning to take shape of five kinds of means of transportation compositions such as railway, highway, water transport, air transport and pipeline.Lay many high-grade and highways, tentatively formed the network of highways in the radiation whole nation being formed by the highway of the different stages such as national highway, high-grade highway, local road.Meanwhile, urban road construction has also had development significantly, and the construction of arterial street, the renewal of traffic control equipment, increase, make moderate progress urban transportation condition.But the quantity of the various vehicles increases greatly in recent years, present facility, road, particularly traffic control system have been difficult to adapt to this speed of development, and traffic congestion has become people's question of common concern.
In order effectively to relieve traffic congestion, improve the service efficiency of highway, the means that usually use information display board to issue and control as transport information; Conventionally, information display board and variable speed-limit sign are issued as the important information of intelligent transportation system, carry out Long-distance Control, transmission by Surveillance center's computing machine by communication network and show various graph text informations, to driver issue in time different sections of highway different road surfaces situation and all kinds of transport information, carry out traffic law, the publicity of traffic knowledge, reach and reduce the impact that highway reappearance is blocked, reduced the non-reappearance accident of highway, improve traffic safety; Described in document " Hai Yilatibala carries; Expressway Information display board arranges Discussion on Technology; the land bridge visual field; in October, 2010; 139-140 ", the mechanism that arranges of information display board system is: (1) sensor information collection and disposal system, (2) information display board information provide, (3) communication system, (4) central control system; The setting of information display board should be from the angle of whole traffic navigation system Construction, takes into full account the associated of leading and control, takes the comprehensive benefit of surface road and overpass into consideration, formulates the leading scheme of globality, rationality, high efficiency; Information display board adopts different forms according to the difference of the place arranging and object; One is mounted on main line, carries out main line induction and outlet induction, and the traffic that shows section, front with character style is as unimpeded, crowded, delay etc., thereby makes driver can turn to surface road, avoids crowded district; Another kind is arranged near ring road entrance, and the queue length of ring road porch and crowded prediction case are reported to driver, also the traffic conditions on contiguous main line can be shown to the driver on ring road entrance, thereby induce for they provide reasonably; These schemes, the induction of super expressway entrance, the induction of road main line, the induction of road way outlet are only demarcated according to information requirement, there is no organic phase combination, particularly the demonstration information of information display board is not set automatically according to macro traffic model prediction output, is difficult to traffic flow density, the road speed of highway to control effectively.
Summary of the invention
Be difficult to the traffic flow density to highway in order to overcome existing information display board information, the problem that road speed control effectively, the invention provides a kind of method to set up of the highway information display board based on improvement discrete model, the method is according to the Macro-traffic Flow discrete model definition section condition controllability discriminant of the speed of improvement, adjustment ring road goes out, entrance vehicle control program, information display board instruction Vehicle Speed changes the equivalent speed in the condition controllability discriminant of section, make in actual road section traffic volume situation situation, section condition controllability discriminant is predicted the density obtaining, speed meet the demands density and speed qualifications, information display board information shows that ring road goes out, the Vehicle Speed of entrance vehicle control program and requirement.
The technical solution adopted for the present invention to solve the technical problems: a kind of method to set up of the highway information display board based on improvement discrete model, is characterized in that comprising the following steps:
1, definition Highway Conditions controllability discriminant is:
Figure 685361DEST_PATH_IMAGE001
Wherein:
Figure 530455DEST_PATH_IMAGE004
，
Figure 922122DEST_PATH_IMAGE005
for the flow of highway entrance,
Figure 793126DEST_PATH_IMAGE006
represent respectively density and the speed of highway outlet,
Figure 150420DEST_PATH_IMAGE007
for the sampling period,
Figure 347046DEST_PATH_IMAGE008
for specifying highway section label,
Figure 22747DEST_PATH_IMAGE009
for the section sum of this appointment highway division,
Figure 963021DEST_PATH_IMAGE010
be
Figure 112505DEST_PATH_IMAGE008
individual section exists
Figure 463721DEST_PATH_IMAGE011
the average density in moment,
Figure 643029DEST_PATH_IMAGE012
be
Figure 798112DEST_PATH_IMAGE008
individual section exists
Figure 362954DEST_PATH_IMAGE013
the average velocity in moment,
Figure 901383DEST_PATH_IMAGE014
for
Figure 53141DEST_PATH_IMAGE011
moment enters from ring road entrance
Figure 335218DEST_PATH_IMAGE008
the flow in individual section, for
Figure 463897DEST_PATH_IMAGE011
moment flows out the from ramp exit
Figure 306213DEST_PATH_IMAGE008
the flow in individual section,
Figure 375669DEST_PATH_IMAGE016
be
Figure 665836DEST_PATH_IMAGE008
individual road section length,
Figure 968904DEST_PATH_IMAGE017
for equivalent speed,
Figure 593789DEST_PATH_IMAGE018
,
Figure 217668DEST_PATH_IMAGE019
,
Figure 113074DEST_PATH_IMAGE020
for free stream velocity,
Figure 164207DEST_PATH_IMAGE021
be
Figure 276388DEST_PATH_IMAGE008
there is the impact of information display board instruction speed parity price speed in individual section,
Figure 126795DEST_PATH_IMAGE022
for the maximum potential density in single track,
Figure 391554DEST_PATH_IMAGE023
Figure 862856DEST_PATH_IMAGE024
Figure 947486DEST_PATH_IMAGE025
for weight coefficient,
Figure 663901DEST_PATH_IMAGE026
,
Figure 783166DEST_PATH_IMAGE027
be reflection special parameter and adjustable correction factor, make the more realistic traffic of whole model;
2, adjust ring road entry and exit vehicle control program, adjustment information display board instruction Vehicle Speed to be to change the equivalent speed in the condition controllability discriminant of section, makes in actual road section traffic volume situation situation, section condition controllability discriminant predicts that the density, the speed that obtain satisfy condition
Figure 363052DEST_PATH_IMAGE028
, input matrix while having solution, information display board information shows the Vehicle Speed of ring road entry and exit vehicle control program and requirement; Wherein:
Figure 642035DEST_PATH_IMAGE030
, for the given positive number that is less than 1; If certain section state is uncontrollable, the density in this section, speed must meet the substantially unimpeded condition of road for a long time:
、
Figure 579397DEST_PATH_IMAGE033
Otherwise install traffic information display board additional to regulate average velocity.
The invention has the beneficial effects as follows: information display board instruction on ring road entry and exit vehicle control program and road is combined, carry out the selection of vehicle flow control program and automatically set according to the macro traffic model of the speed of improvement and controllability discriminant, realizing traffic flow density, the road speed of highway are control effectively.
Below in conjunction with embodiment, the present invention is elaborated.
Embodiment
,definition Highway Conditions controllability discriminant is:
Figure 73832DEST_PATH_IMAGE001
Wherein:
Figure 918423DEST_PATH_IMAGE034
Figure 653160DEST_PATH_IMAGE035
Figure 448947DEST_PATH_IMAGE036
，
Figure 294543DEST_PATH_IMAGE005
for the flow of highway entrance,
Figure 993640DEST_PATH_IMAGE006
represent respectively density and the speed of highway outlet,
Figure 712329DEST_PATH_IMAGE007
for the sampling period,
Figure 933094DEST_PATH_IMAGE037
for specifying highway section label,
Figure 582381DEST_PATH_IMAGE038
for the section sum of this appointment highway division,
Figure 401564DEST_PATH_IMAGE039
be
Figure 478104DEST_PATH_IMAGE037
individual section exists
Figure 982904DEST_PATH_IMAGE040
the average density in moment, be
Figure 47254DEST_PATH_IMAGE037
individual section is at the average velocity in moment,
Figure 543964DEST_PATH_IMAGE014
for
Figure 286792DEST_PATH_IMAGE011
moment enters from ring road entrance
Figure 28614DEST_PATH_IMAGE008
the flow in individual section,
Figure 806077DEST_PATH_IMAGE015
for
Figure 411371DEST_PATH_IMAGE011
moment flows out the from ramp exit
Figure 657806DEST_PATH_IMAGE008
the flow in individual section,
Figure 187008DEST_PATH_IMAGE016
be
Figure 333824DEST_PATH_IMAGE008
individual road section length,
Figure 599765DEST_PATH_IMAGE017
for equivalent speed,
Figure 317186DEST_PATH_IMAGE018
,
Figure 899346DEST_PATH_IMAGE019
,
Figure 651401DEST_PATH_IMAGE020
for free stream velocity,
Figure 99962DEST_PATH_IMAGE021
be
Figure 553946DEST_PATH_IMAGE008
there is the impact of information display board instruction speed parity price speed in individual section,
Figure 690529DEST_PATH_IMAGE022
for the maximum potential density in single track,
Figure 47824DEST_PATH_IMAGE023
Figure 978871DEST_PATH_IMAGE042
Figure 920151DEST_PATH_IMAGE025
for weight coefficient,
Figure 548840DEST_PATH_IMAGE026
,
Figure 9909DEST_PATH_IMAGE027
be reflection special parameter and adjustable correction factor, make the more realistic traffic of whole model;
If
Figure 361124DEST_PATH_IMAGE043
Wherein:
Figure 540433DEST_PATH_IMAGE044
Figure 85126DEST_PATH_IMAGE046
Figure 810506DEST_PATH_IMAGE047
By adjusting ring road entry and exit vehicle control program, highway is all carried out to flow control;
2, adjust ring road entry and exit vehicle control program, adjustment information display board instruction Vehicle Speed to be to change the equivalent speed in the condition controllability discriminant of section, makes in actual road section traffic volume situation situation, section condition controllability discriminant predicts that the density, the speed that obtain satisfy condition
Figure 962263DEST_PATH_IMAGE048
,
Figure 244340DEST_PATH_IMAGE049
input matrix while having solution, information display board information shows the Vehicle Speed of ring road entry and exit vehicle control program and requirement; If certain section state is uncontrollable, the density in this section, speed must meet the substantially unimpeded condition of road for a long time: , otherwise install traffic information display board additional to regulate average velocity.

Claims (1)

1. a method to set up for the highway information display board based on improvement discrete model, is characterized in that comprising the following steps:
1) definition Highway Conditions controllability discriminant is:
Figure 638416DEST_PATH_IMAGE001
Wherein:
Figure 458604DEST_PATH_IMAGE002
Figure 499504DEST_PATH_IMAGE003
Figure 379735DEST_PATH_IMAGE004
，
Figure 4620DEST_PATH_IMAGE005
for the flow of highway entrance,
Figure 628500DEST_PATH_IMAGE006
represent respectively density and the speed of highway outlet,
Figure 461589DEST_PATH_IMAGE007
for the sampling period,
Figure 761989DEST_PATH_IMAGE008
for specifying highway section label,
Figure 624903DEST_PATH_IMAGE009
for the section sum of this appointment highway division,
Figure 475309DEST_PATH_IMAGE010
be
Figure 927019DEST_PATH_IMAGE008
individual section exists the average density in moment,
Figure 684551DEST_PATH_IMAGE012
be individual section exists
Figure 520231DEST_PATH_IMAGE013
the average velocity in moment,
Figure 913166DEST_PATH_IMAGE014
for moment enters from ring road entrance
Figure 926569DEST_PATH_IMAGE008
the flow in individual section,
Figure 352872DEST_PATH_IMAGE015
for
Figure 916708DEST_PATH_IMAGE011
moment flows out the from ramp exit
Figure 726663DEST_PATH_IMAGE008
the flow in individual section,
Figure 221099DEST_PATH_IMAGE016
be
Figure 314957DEST_PATH_IMAGE008
individual road section length, for equivalent speed, , ,
Figure 78590DEST_PATH_IMAGE020
for free stream velocity,
Figure 984229DEST_PATH_IMAGE021
be
Figure 267311DEST_PATH_IMAGE008
there is the impact of information display board instruction speed parity price speed in individual section,
Figure 916599DEST_PATH_IMAGE022
for the maximum potential density in single track,
Figure 546742DEST_PATH_IMAGE024
Figure 317121DEST_PATH_IMAGE025
for weight coefficient,
Figure 770099DEST_PATH_IMAGE026
,
Figure 104173DEST_PATH_IMAGE027
be reflection special parameter and adjustable correction factor, make the more realistic traffic of whole model;
Specific implementation is: if
Figure 600883DEST_PATH_IMAGE028
Wherein:
Figure 609290DEST_PATH_IMAGE029
Figure 128575DEST_PATH_IMAGE031
Figure 733869DEST_PATH_IMAGE032
By adjusting ring road entry and exit vehicle control program, highway is all carried out to flow control;
2) adjust ring road entry and exit vehicle control program, adjustment information display board instruction Vehicle Speed to be to change the equivalent speed in the condition controllability discriminant of section, makes in actual road section traffic volume situation situation, section condition controllability discriminant predicts that the density, the speed that obtain satisfy condition
Figure 980305DEST_PATH_IMAGE033
,
Figure 509506DEST_PATH_IMAGE034
input matrix while having solution, information display board information shows the Vehicle Speed of ring road entry and exit vehicle control program and requirement; Wherein:
Figure 390743DEST_PATH_IMAGE035
, for the given positive number that is less than 1; If certain section state is uncontrollable, the density in this section, speed must meet the substantially unimpeded condition of road for a long time:
、
Figure 171246DEST_PATH_IMAGE038
Otherwise install traffic information display board additional to regulate average velocity.
CN201210059779.5A 2012-03-08 2012-03-08 Method for setting road information display board based on improved discrete model Expired - Fee Related CN102610112B (en)

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CN102610113A (en) * 2012-03-09 2012-07-25 西安费斯达自动化工程有限公司 Method for setting road section information display board based on improved discrete model
CN102945611B (en) * 2012-11-19 2014-10-01 西安费斯达自动化工程有限公司 Online Traffic Bottleneck Predictive Control Method Based on FPGA and Improved Discrete Macroscopic P Model

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CN102122437A (en) * 2011-04-01 2011-07-13 上海千年工程建设咨询有限公司 Road traffic management decision support device
CN102157072A (en) * 2011-03-29 2011-08-17 北京航空航天大学 Inducing device and inducing method of vehicle confluence at intersection based on vehicle and road collaboration
CN102360522A (en) * 2011-09-27 2012-02-22 浙江交通职业技术学院 Highway optimization control method

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JP4236096B2 (en) * 2003-03-28 2009-03-11 名古屋電機工業株式会社 Detour guidance display method on map type information display board
KR20050068938A (en) * 2003-12-30 2005-07-05 현대자동차주식회사 Method of a traffic conditions decision
JP4861355B2 (en) * 2008-02-13 2012-01-25 株式会社東芝 Road traffic information system

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CN102157072A (en) * 2011-03-29 2011-08-17 北京航空航天大学 Inducing device and inducing method of vehicle confluence at intersection based on vehicle and road collaboration
CN102122437A (en) * 2011-04-01 2011-07-13 上海千年工程建设咨询有限公司 Road traffic management decision support device
CN102360522A (en) * 2011-09-27 2012-02-22 浙江交通职业技术学院 Highway optimization control method

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