CN102592466A - Setting method of road section information display board based on discrete model - Google Patents

Setting method of road section information display board based on discrete model Download PDF

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CN102592466A
CN102592466A CN2012100597831A CN201210059783A CN102592466A CN 102592466 A CN102592466 A CN 102592466A CN 2012100597831 A CN2012100597831 A CN 2012100597831A CN 201210059783 A CN201210059783 A CN 201210059783A CN 102592466 A CN102592466 A CN 102592466A
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road
information display
display board
speed
highway section
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CN102592466B (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

In order to overcome the problem that the current information display board information is hard to effectively control the traffic flow density and travelling speed on a highway, the invention provides a setting method of a road section information display board based on a discrete model, the method comprises: defining a road section condition controllability discriminant according to a macro traffic flow discrete model, adjusting a control scheme of vehicles at a ramp entry and a ramp exit, indicating the vehicle travelling speed to change the equivalent speed in the road section condition controllability discriminant through the information display board, so that the density and speed predicted by the road section condition controllability discriminant meet density and speed limiting conditions under an actual road section traffic condition, and the information display board displays the control scheme of vehicles at the ramp entry and the ramp exit and a required vehicle travelling speed.

Description

A kind of method to set up of the road section information display board based on 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 road section information display board based on discrete model.
Background technology
Traffic is of crucial importance to development and 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 that begins to take shape that five kinds of means of transportation such as railway, highway, water transport, air transport and pipeline are formed.Lay many high-grade and highways, tentatively constituted the network of highways in the radiation whole nation of forming by the highway of 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 the urban transportation condition.Yet the quantity of the various vehicles increases greatly in recent years, and 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, usually use the means of information display board as transport information issue and control; Usually; Information display board and variable speed-limit sign are as the important information issue of intelligent transportation system; By Surveillance center's computing machine carry out Long-distance Control, transmission through communication network and show various graph text informations, to the driver in time issue different highway sections different road surfaces situation and all kinds of transport information, carry out traffic law; The propaganda of traffic knowledge, reach and reduce the influence that the highway reappearance is blocked, reduced the non-reappearance accident of highway, improve traffic safety; Of document " Hai Yilatibala carries; highway information display board is provided with technology and inquires into; the land bridge visual field; in October, 2010,139-140 ", the mechanism that is provided with 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 related of leading and control, takes the comprehensive benefit of surface road and overpass into consideration, formulates the leading scheme of globality, rationality, high efficiency; The information display board adopts different forms according to the different of place that is provided with and purpose; A kind of being mounted on the main line carries out that main line is induced and outlet is induced, and shows traffic such as unimpeded, crowded, the delay in highway section, the place ahead etc. with character style, thereby makes the driver can turn to surface road, avoids crowded the district; Another kind is installed near the ring road inlet, reports to the driver to the queue length of ring road porch and crowded prediction case, also can be shown to the traffic conditions on the contiguous main line driver on the ring road inlet, thereby induce for they provide reasonably; These schemes; With super expressway inlet induce, the road main line is induced, the road way outlet is only induced and demarcated according to information requirement; There is not organic phase to combine; Particularly the display message of information display board according to macro traffic model prediction output automatic setting, is not difficult to traffic flow density, the road speed of highway are control effectively.
Summary of the invention
Be difficult to the traffic flow density to highway, the problem that road speed control effectively in order to overcome existing information display board information; The invention provides a kind of method to set up of the road section information display board based on discrete model; This method is according to macroscopical traffic flow discrete model definition highway section condition controllability discriminant; Adjustment ring road entry and exit vehicle controlling schemes; Information display board indication Vehicle Speed change in the condition controllability discriminant of highway section and equivalent speed; Density, the speed that make under actual road section traffic volume situation situation, highway section condition controllability discriminant prediction obtains meet the demands density and speed qualifications, information display board information shows the Vehicle Speed of ring road entry and exit vehicle controlling schemes and requirement.
The technical solution adopted for the present invention to solve the technical problems: a kind of method to set up of the road section information display board based on discrete model is characterized in that may further comprise the steps:
1, definition highway section condition controllability discriminant is:
Figure 2012100597831100002DEST_PATH_IMAGE001
Wherein:
Figure 194381DEST_PATH_IMAGE002
Be the sampling period, Be appointment highway section label,
Figure 2012100597831100002DEST_PATH_IMAGE005
Be this highway section sum of specifying highway to divide,
Figure 887453DEST_PATH_IMAGE006
Be
Figure 77125DEST_PATH_IMAGE004
Individual highway section exists
Figure 2012100597831100002DEST_PATH_IMAGE007
Average density constantly,
Figure 776616DEST_PATH_IMAGE008
Be
Figure 342726DEST_PATH_IMAGE004
Individual highway section exists
Figure 644395DEST_PATH_IMAGE007
Average velocity constantly,
Figure 2012100597831100002DEST_PATH_IMAGE009
For
Figure 465021DEST_PATH_IMAGE007
Constantly get into the from the ring road inlet
Figure 852140DEST_PATH_IMAGE010
The flow in individual highway section,
Figure 2012100597831100002DEST_PATH_IMAGE011
For
Figure 959292DEST_PATH_IMAGE007
Constantly flow out the from the ring road outlet The flow in individual highway section,
Figure 145874DEST_PATH_IMAGE012
Be
Figure 754710DEST_PATH_IMAGE004
Individual road section length, V e Be equivalent speed,
Figure 2012100597831100002DEST_PATH_IMAGE013
,
Figure 665553DEST_PATH_IMAGE014
, Be free stream velocity,
Figure 260921DEST_PATH_IMAGE016
Be
Figure 228877DEST_PATH_IMAGE004
There is information display board indication speed parity price velocity effect in individual highway section,
Figure 2012100597831100002DEST_PATH_IMAGE017
Be the maximum potential density in single track,
Figure 42DEST_PATH_IMAGE018
Be weight coefficient,
Figure 2012100597831100002DEST_PATH_IMAGE019
Be reflection special parameter and adjustable correction factor, make The model more meet actual traffic; Full application form symbol is identical;
2, adjust ramp exit and entry vehicle control program, message signs indicating vehicle speed change road conditions discriminant controllability and equivalence in speed, making road traffic conditions in the actual case, the road conditions are controllable discriminant forecast The resulting density, velocity satisfies the condition
Figure 711646DEST_PATH_IMAGE020
,
Figure 2012100597831100002DEST_PATH_IMAGE021
The input matrix solvable, the information display of the card information display ramp, entry vehicle control program and the requirements of vehicle speed; wherein: ,
Figure 2012100597831100002DEST_PATH_IMAGE023
for a given positive number less than 1;; if the road without exit and entry control and there is no traffic information signs, the road density, speed must be permanently satisfy basic smooth road conditions:
、
Figure 2012100597831100002DEST_PATH_IMAGE025
Otherwise install the traffic information display board additional to regulate average velocity.
The invention has the beneficial effects as follows: information display board indication on ring road entry and exit vehicle controlling schemes and the road is combined; Carry out selection of vehicle flow controlling schemes and automatic setting according to macro traffic model and controllability discriminant, realize traffic flow density, the road speed of highway are control effectively.
Below in conjunction with embodiment the present invention is elaborated.
Embodiment
1, definition highway section condition controllability discriminant is:
Figure 582277DEST_PATH_IMAGE026
Wherein:
Figure 292045DEST_PATH_IMAGE002
Be the sampling period,
Figure 2012100597831100002DEST_PATH_IMAGE027
Be appointment highway section label,
Figure 14669DEST_PATH_IMAGE005
Be this highway section sum of specifying highway to divide,
Figure 324428DEST_PATH_IMAGE006
Be
Figure 395152DEST_PATH_IMAGE027
Individual highway section exists
Figure 853740DEST_PATH_IMAGE007
Average density constantly,
Figure 693520DEST_PATH_IMAGE008
Be
Figure 174180DEST_PATH_IMAGE004
Individual highway section exists
Figure 203972DEST_PATH_IMAGE007
Average velocity constantly,
Figure 61069DEST_PATH_IMAGE009
For
Figure 340042DEST_PATH_IMAGE007
Constantly get into the from the ring road inlet The flow in individual highway section,
Figure 36920DEST_PATH_IMAGE011
For
Figure 107163DEST_PATH_IMAGE007
Constantly flow out the from the ring road outlet
Figure 655956DEST_PATH_IMAGE004
The flow in individual highway section,
Figure 743997DEST_PATH_IMAGE012
Be
Figure 494521DEST_PATH_IMAGE004
Individual road section length, V e Be equivalent speed,
Figure 693421DEST_PATH_IMAGE013
,
Figure 96720DEST_PATH_IMAGE014
, Be free stream velocity,
Figure 909660DEST_PATH_IMAGE016
Be
Figure 646672DEST_PATH_IMAGE004
There is information display board indication speed parity price velocity effect in individual highway section,
Figure 630110DEST_PATH_IMAGE017
Be the maximum potential density in single track,
Figure 59954DEST_PATH_IMAGE018
Be weight coefficient,
Figure 773351DEST_PATH_IMAGE019
Be reflection special parameter and adjustable correction factor, make The model more meet actual traffic;
When if there are entry and exit in this highway section,
Figure 314054DEST_PATH_IMAGE028
Wherein:
，
Figure 193807DEST_PATH_IMAGE030
Can be through the variable information plate and the ring road entry and exit adjustment magnitude of traffic flow;
2, adjustment ring road entry and exit vehicle controlling schemes; Information display board indication Vehicle Speed change in the condition controllability discriminant of highway section and equivalent speed; Make under actual road section traffic volume situation situation, highway section condition controllability discriminant prediction obtains, and density, the speed speed of satisfying condition satisfy condition
Figure 2012100597831100002DEST_PATH_IMAGE031
, when the input matrix of
Figure 528973DEST_PATH_IMAGE032
is separated, information display board information shows the Vehicle Speed of ring road entry and exit vehicle controlling schemes and requirement; If this highway section does not have entry and exit control and does not have the traffic information display board; Then the density in this highway section, speed must satisfy the unimpeded basically condition of road for a long time: ,
Figure 842581DEST_PATH_IMAGE034
, otherwise to install the traffic information display board additional to regulate average velocity.

Claims (1)

1. method to set up based on the road section information display board of discrete model is characterized in that may further comprise the steps:
1) definition highway section condition controllability discriminant is:
Figure 928083DEST_PATH_IMAGE001
Wherein: Be the sampling period,
Figure 2012100597831100001DEST_PATH_IMAGE003
Be appointment highway section label,
Figure 486990DEST_PATH_IMAGE004
Be this highway section sum of specifying highway to divide,
Figure 695642DEST_PATH_IMAGE005
Be
Figure 108169DEST_PATH_IMAGE003
Individual highway section exists
Figure 136168DEST_PATH_IMAGE006
Average density constantly,
Figure 863557DEST_PATH_IMAGE007
Be
Figure 53230DEST_PATH_IMAGE003
Individual highway section exists
Figure 953053DEST_PATH_IMAGE006
Average velocity constantly,
Figure 256514DEST_PATH_IMAGE008
For
Figure 558182DEST_PATH_IMAGE006
Constantly get into the from the ring road inlet
Figure 918757DEST_PATH_IMAGE009
The flow in individual highway section,
Figure 828245DEST_PATH_IMAGE010
For
Figure 198046DEST_PATH_IMAGE006
Constantly flow out the from the ring road outlet
Figure 88642DEST_PATH_IMAGE003
The flow in individual highway section,
Figure 623047DEST_PATH_IMAGE011
Be
Figure 74748DEST_PATH_IMAGE003
Individual road section length, V e Be equivalent speed,
Figure 47908DEST_PATH_IMAGE012
,
Figure 58589DEST_PATH_IMAGE013
,
Figure 26545DEST_PATH_IMAGE014
Be free stream velocity,
Figure 395779DEST_PATH_IMAGE015
Be
Figure 107383DEST_PATH_IMAGE003
There is information display board indication speed parity price velocity effect in individual highway section,
Figure 972571DEST_PATH_IMAGE016
Be the maximum potential density in single track,
Figure 35729DEST_PATH_IMAGE017
Be weight coefficient, Be reflection special parameter and adjustable correction factor, make The model more meet actual traffic; Full application form symbol is identical;
2)? Adjust ramp exit and entry vehicle control program, message signs indicating vehicle speed change road conditions discriminant controllability and equivalence in speed, making road traffic conditions in the actual case, the road conditions are controllable discriminant predicted density, speed satisfies the condition
Figure 868873DEST_PATH_IMAGE019
, The input matrix solvable, the message display board information display ramp exit and entry vehicle control program and the requirements of the vehicle speed; wherein:
Figure 709712DEST_PATH_IMAGE021
,
Figure 780436DEST_PATH_IMAGE022
for a given positive number less than 1;; if not out of the road, access control and there is no traffic information signs, the road density, speed must be permanently satisfy basic smooth road conditions:
Figure 571193DEST_PATH_IMAGE023
、
Figure 410973DEST_PATH_IMAGE024
Otherwise install the traffic information display board additional to regulate average velocity.
CN201210059783.1A 2012-03-09 2012-03-09 Setting method of road section information display board based on discrete model Expired - Fee Related CN102592466B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101240527A (en) * 2007-03-23 2008-08-13 天津国锐工程实验检测有限公司 Method for setting traffic sign used for optimizing freeway net
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
JP2009193212A (en) * 2008-02-13 2009-08-27 Toshiba Corp Road traffic information system
CN101958050A (en) * 2010-02-10 2011-01-26 北方工业大学 Composite express way entrance ramp traffic control and guidance device and method
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
CN102289943A (en) * 2011-06-29 2011-12-21 浙江工业大学 Traffic control method for ensuring smoothness of fly-over crossing
CN102360522A (en) * 2011-09-27 2012-02-22 浙江交通职业技术学院 Highway optimization control method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101240527A (en) * 2007-03-23 2008-08-13 天津国锐工程实验检测有限公司 Method for setting traffic sign used for optimizing freeway net
JP2009193212A (en) * 2008-02-13 2009-08-27 Toshiba Corp Road traffic information system
CN101958050A (en) * 2010-02-10 2011-01-26 北方工业大学 Composite express way entrance ramp traffic control and guidance device and method
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
CN102289943A (en) * 2011-06-29 2011-12-21 浙江工业大学 Traffic control method for ensuring smoothness of fly-over crossing
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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