CN102013171A - Traffic control system for improving road capacity - Google Patents
Traffic control system for improving road capacity Download PDFInfo
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- CN102013171A CN102013171A CN2010106059227A CN201010605922A CN102013171A CN 102013171 A CN102013171 A CN 102013171A CN 2010106059227 A CN2010106059227 A CN 2010106059227A CN 201010605922 A CN201010605922 A CN 201010605922A CN 102013171 A CN102013171 A CN 102013171A
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Abstract
The invention discloses a traffic control system for improving the road capacity. The traffic control system comprises a traffic flow detection unit, a data analyzing and discrimination unit, a local control unit and a variable information plate driving unit; the data analyzing and discrimination unit and an upper computer as well as the local control unit of a command center are connected and can realize data exchange; and the local control unit is respectively connected with the traffic flow detection unit and the variable information plate driving unit, and can realize data exchange respectively with the traffic flow detection unit and the variable information plate driving unit. By changing the method for setting fixed speed limit standard of the traditional express way section, the invention has the advantages that the upper limit speed value is ensured to be changed according to the variation of real-time traffic flow to ensure the stability of traffic flow, thus the average running speed of vehicles can be improved, the parking times can be reduced, the pollutant emission can be lowered, and the energy consumption can be decreased.
Description
Technical field
The present invention relates to intelligent transportation control field, be specifically related to a kind of can be according to the traffic control system of the corresponding speed limit of city expressway actual traffic flow control.
Background technology
The through street is the major trunk roads of urban transportation, and it can effectively separate the middle and long distance traffic ability of certain scale with the short distance traffic, allows urban inner road and passing by of urban periphal defence can have one reasonably to transfer and be connected between the highway simultaneously.Omnidistance no crossing, through street, vehicle partition travel, and can provide higher service level to road user.The through street plays key effect in the entire city road network, it is the sustainer of entire city traffic, yet quick growth along with the traffic trip demand, traffic congestion often takes place in the through street, how to alleviate the utilization rate that traffic congestion improves the through street, the demand that how to satisfy traveler better is the urgent problems that solve of needs.
In order to improve the traffic capacity of expressway or through street, Chinese patent CN101620786 discloses a kind of highway intelligent transportation monitoring and managing system.It utilizes GPS vehicle speed measuring and definite its position to entering highway, utilizes GPRS to pass its positional information back Surveillance center in real time, and by the server calculating in real time and the analysis of Surveillance center, Surveillance center's transmission information is carried out voice broadcast.This system can provide real-time the place ahead traffic information for vehicle, in time informs vehicle forward-and-rearward road and vehicle condition, thereby can increase the traffic capacity of road.But this Traffic monitoring management system utilizes portable terminal that intersection information is provided, but the indication information in the traffic sign is not provided, and vehicle obtains the traffic indication information if desired and need transform vehicle, and corresponding apparatus is installed.For indication informations such as the place ahead speed-limiting messages, the user that relevant device is not installed can't be known, easily causes unconscious violating the regulations and traffic hazard.
Chinese patent CN101206800 discloses a kind of vehicle speed limiting automatic monitoring system, comprises speed-limiting messages emission and display device, wireless communications management module, memory module, central control module and vehicle monitoring module.Speed-limiting messages emission and display device are installed on by the road that needs speed limit, send speed-limiting messages and other related administrative information to the vehicle that enters the speed limit highway section.Vehicle monitoring equipment is installed on the vehicle, judges according to the speed-limiting messages that receives whether vehicle exceeds the speed limit, and implements to make record.It is hand-held by the traffic control departmental manager that speed-limiting messages is provided with equipment, is used for the display message and the speed-limiting messages of speed-limiting messages emission and display device are carried out long-range setting.Native system can be realized the real-time monitoring of limiting vehicle speed, and according to receiving the violation data that the mobile unit installed on each vehicle is sent, so that vehicles peccancy is made punishment.But the speed-limiting messages of this vehicle speed limiting automatic monitoring system must be by the long-range setting of traffic control personnel, can not regulate automatically according to the variation of the size of real-time traffic flow amount.Like this, the control of the magnitude of traffic flow will be subjected to artificial factor, and the speed of the traffic flow on the road can not change along with the real-time change of vehicle density, does not have the effect that improves the through street traffic capacity.
Summary of the invention
Technical matters to be solved by this invention is the problem that city expressway highway section speed limit scheme can not change accordingly according to the actual traffic demand.
For achieving the above object, the invention provides a kind of traffic control system that improves road passage capability, comprise a plurality of traffic controls station that is arranged on the highway section, described a plurality of traffic controls station is connected to a host computer, and each traffic control station comprises:
Magnitude of traffic flow detecting unit: be spaced apart at least two magnitude of traffic flow detecting units that 500-2000 rice is arranged on the section in traffic direction highway section, be used to gather traffic flow information, and calculate the roadway occupancy data according to the traffic flow information that collects;
Local control module: receive the roadway occupancy data of described magnitude of traffic flow detecting unit transmission, and according to the speed limit of traffic instructions control setting in the variable information plate demonstration of the section in traffic direction highway section;
Also comprise the data parsing judging unit, described data parsing judging unit comprises:
Data reception module: receive the roadway occupancy data of described local control module transmission and the data of host computer transmission;
Data resolution module: the roadway occupancy data parsing that described data reception module is received can the recognition data pattern for the traffic judge module, is the enough recognition data patterns of local control module with the data parsing of described host computer;
The traffic judge module: the traffic of place, described traffic control station site of road is judged in the roadway occupancy data of resolving according to described data resolution module and the instruction of described host computer, forms described traffic instructions signal;
Data transmission module: with described traffic judge module generate the traffic instructions signal transfer to described local control module and host computer.
Described host computer receives the traffic related information at each traffic control station, after the road pavement traffic is totally judged respectively to each traffic control station sending controling instruction information.
Described data reception module comprises:
The first Data Receiving submodule: the roadway occupancy data that receive described local control module transmission;
The second Data Receiving submodule: the data that are used to receive described host computer transmission.
Described data resolution module comprises:
First data resolution module: be used to resolve the roadway occupancy data that the first Data Receiving submodule is received;
Second data resolution module: the data that are used to resolve the host computer transmission that the second Data Receiving submodule receives.
The speed limit that described local control module shows by variable information plate driver element control variable information plate.
Described magnitude of traffic flow detecting unit is three, is followed successively by magnitude of traffic flow detecting unit I, magnitude of traffic flow detecting unit II and magnitude of traffic flow detecting unit III along the section in traffic direction highway section.
The present invention provides a kind of method that improves road passage capability simultaneously, comprises the steps:
A, at least two magnitude of traffic flow detecting units of section setting in traffic direction highway section, be spaced apart 500-2000 rice between the described magnitude of traffic flow detecting unit;
B, magnitude of traffic flow detecting unit detect the traffic flow information of place section, and calculate the roadway occupancy data, with the roadway occupancy data transmission to local control module;
C, described data reception module receive the data of roadway occupancy data that described local control module transmits and host computer transmission and transmit it to the data parsing unit, can the recognition data pattern for the traffic judge module by described data resolution module to the roadway occupancy data parsing of receiving, be the enough recognition data patterns of local control module with the data parsing of described host computer; The traffic of place, described traffic control station site of road is judged in the roadway occupancy data that described traffic judge module is resolved according to described data resolution module and the instruction of described host computer, forms described traffic instructions signal; And the traffic instructions signal transferred to local control module by described data transmission module, local control module is according to the described traffic instructions signal controlling variable information plate driver element of receiving, and then the speed limit that shows of control variable information plate.
Magnitude of traffic flow detecting unit among the described step a is three, is followed successively by magnitude of traffic flow detecting unit I, magnitude of traffic flow detecting unit II and magnitude of traffic flow detecting unit III along the section in traffic direction highway section.
The present invention has following advantage:
1, improve the road utilization rate: if transport need during greater than the traffic capacity, traffic control system of the present invention by the upper limit that underspeeds dwindle in the track with different tracks between the velocity distribution difference of vehicle, can obtain a traffic flow more stably.Can farthest delay the appearance of crowding, increase the volume of traffic under the premise that security is guaranteed as far as possible.When taking place when congested in traffic, the variable speed-limit system by improving traffic speed homogeneity and under the condition of peak, reduce road speed, to reduce the generation of rear-end collision; Reach the road bottleneck road that causes owing to the road geometric condition in the road construction district, the speed limit of successively decreasing can be set steadily reach traffic safety, improve the road construction personal security to guarantee road traffic flow.
2, traffic control system of the present invention is a kind of open control system, and the user can reasonably change the highway section speed limit according to the variation of road traffic flow, and real time reaction is made in the variation of traffic flow.The present invention is the organic assembling of each functional unit, comprise correspondent computer software simultaneously, the input and output that only need physically can provide the various kinds of equipment that is placed in the highway section connect appropriate, each functional unit of system is finished function separately, so just can realize that this control system is according to the speed limit on the vehicle flowrate size real time altering variable information plate of input.
Description of drawings
Fig. 1 is a system construction drawing of the present invention.
Embodiment
Using following examples below further sets forth the present invention.
The traffic control system of raising road passage capability of the present invention comprises a plurality of traffic controls station that is arranged on the highway section, and described a plurality of traffic controls station is connected to a host computer; Wherein each traffic control station comprises:
Magnitude of traffic flow detecting unit: be spaced apart three magnitude of traffic flow detecting units that 500-2000 rice is arranged on the section in traffic direction highway section, be followed successively by magnitude of traffic flow detecting unit I, magnitude of traffic flow detecting unit II and magnitude of traffic flow detecting unit III, be used to gather traffic flow information, and calculate the roadway occupancy data according to the traffic flow information that collects; Described magnitude of traffic flow detecting unit I and described magnitude of traffic flow detecting unit II are spaced apart 500 meters, and described magnitude of traffic flow detecting unit II and described magnitude of traffic flow detecting unit III are spaced apart 500 meters.
Local control module: receive the roadway occupancy data of described magnitude of traffic flow detecting unit transmission, and be arranged on the speed limit that the variable information plate of the section in traffic direction highway section shows according to instruction control, reduce the vehicle flowrate in the highway section that blocks up.
Also comprise the data parsing judging unit, described data parsing judging unit comprises: data reception module: receive the roadway occupancy data of local control module transmission and the data of other local control modules and host computer transmission; Data resolution module: the roadway occupancy data parsing that data reception module is received can the recognition data pattern for the traffic judge module, or the data parsing of other local control module and host computer is the enough recognition data patterns of local control module; Traffic judge module: the roadway occupancy data of resolving according to data resolution module and the traffic of the road variable speed-limit value judgement magnitude of traffic flow detecting unit place site of road of setting; Data transmission module: the data transmission that the traffic that the traffic judge module is judged generates is to target local control module or host computer.
Described data reception module comprises:
The first Data Receiving submodule: the roadway occupancy data that receive local control module transmission;
The second Data Receiving submodule: the data that are used to receive the host computer transmission.
Described data resolution module comprises:
First data resolution module: be used to resolve the roadway occupancy data that the first Data Receiving submodule is received;
Second data resolution module: the data that are used to resolve the host computer transmission that the second Data Receiving submodule receives.
The speed limit that described local control module shows by variable information plate driver element control variable information plate.
The hardware device that each unit of this traffic system adopts is as described below:
The data parsing judging unit adopts the industrial computer mainboard of AMD LX700 433MHz CPU, has 2 100-M network Ethernets, 4 serial ports, 4 USB interface, and MiniIDE interface and PCI expansion interface.These interfaces are integrated most important for whole system, one of 2 100-M network Ethernet of this unit in order to being connected of command centre, one gives over to expansion, can do debugging, set up functions such as wireless network and LAN (Local Area Network).In 4 serial ports, 1 plate carries the RS-485 interface, is used for being connected with local control module.3 RS-232 interface are used to insert expansion module and do not have monitoring and configuration under the network condition.In 4 USB interface, 1 USB interface is used for being connected with CD-ROM drive, and 1 USB interface is used for being connected with USB flash disk, and the system that finishes the data parsing judging unit installs and backup functionality; All the other 2 USB interface give over to expansion; Described MiniIDE interface is connected with hard disk, finishes the function of setting up basic memory device, but carry DOM electronic hard disc; Described PCI expansion interface is connected with outside expansion card, finish user's appointment but the function that intelligent cell hardware can not be finished, but carry CF card.
Local control module: this unit adopts Altera Cyclone Series FPGA EP1C12 as processor.The function that has comprises according to the instruction that receives the data parsing judging unit, takes the data that detect processing unit as required, forms the signal lamp steering logic, carries the lamp driver element to finish the lamp control drive signal; Receive the expansion I/O input block and upload status information; Receiving light fault detection unit information.Comprise 7 RS-485 communication interfaces., wherein four link to each other with data parsing judging unit, detection processing unit, signal lamp driver element, information board fault detection unit respectively.
Magnitude of traffic flow detecting unit: this unit adopts Altera Cyclone Series FPGA EP1C6 as processor, 128M Nand Flash.Have 2 RS-485 interfaces on the data processing plate of this unit, be respectively applied for detector plates and be connected with local control module, make it to collect the detection data with being connected of detector plates, with the data transmission that has realized being connected of local control module between local control module and the detection processing unit.
Variable information plate driver element: this unit comprises 1 control panel and drives maximum 8 blocks of variable information plates.Control panel sends the control signal of variable information plate, has Hall element and modulus switching device on the variable information plate, can detect current value, and then control signal is converted to the forceful electric power signal and drives external circuit, and then carries out control command.The firm and hard existing light current output of variable information is to the control of forceful electric power, and the multipotency of variable information plate driver element drives 8 blocks of variable information plates.This unit adopts Altera Cyclone series EP1C6 fpga chip as processor, and design support drives 8 blocks of variable information plates.Here except will finishing the signal lamp driving from light current to the forceful electric power, also to carry out a series of state-detection.Before each variable information plate output, detect voltage output and have or not, judge with this whether actual signal control voltage conforms to control command.Detect the stable electrical flow valuve of every group of variable information plate, judge with this whether information board is lighted.This unit has 2 RS-485 interfaces.
The course of work of traffic control system of the present invention is:
A, the section in the traffic direction highway section are provided with three magnitude of traffic flow detecting units, are respectively magnitude of traffic flow detecting unit I, magnitude of traffic flow detecting unit II and magnitude of traffic flow detecting unit III, are spaced apart 500 meters between the described magnitude of traffic flow detecting unit;
B, magnitude of traffic flow detecting unit detect the traffic flow information of place section, and calculate the roadway occupancy data, and transfer to local control module;
C, described data reception module receive the data of roadway occupancy data that described local control module transmits and host computer transmission and transmit it to the data parsing unit, can the recognition data pattern for the traffic judge module by described data resolution module to the roadway occupancy data parsing of receiving, be the enough recognition data patterns of local control module with the data parsing of described host computer; The traffic of place, described traffic control station site of road is judged in the roadway occupancy data that described traffic judge module is resolved according to described data resolution module and the instruction of described host computer, forms described traffic instructions signal; And the traffic instructions signal transferred to local control module by described data transmission module, local control module is according to the described traffic instructions signal controlling variable information plate driver element of receiving, and then the speed limit that shows of control variable information plate.
Below, one of them traffic control in the traffic control system of the present invention sends under the situation that keeps this traffic control station speed limit for standing in host computer, the roadway occupancy data of eight kinds of situations that the magnitude of traffic flow detecting unit in three highway sections at this traffic control station detects, and the logic determines made according to different situations respectively of traffic judge module.
Vehicle heading is to magnitude of traffic flow detecting unit III from magnitude of traffic flow detecting unit I.Variable speed-limit sign 1 is arranged at described magnitude of traffic flow detecting unit II place, and variable speed-limit sign 2 is arranged at described magnitude of traffic flow detecting unit III place.
1. when magnitude of traffic flow detecting unit I/II/III is unobstructed state
Keep the original speed limit in highway section, through street.
2. when magnitude of traffic flow detecting unit I/II/III is blocked state
Change the speed limit of variable speed-limit sign 1 and 2 simultaneously, variable speed-limit sign 2 is for being lower than 25% (but ratio dynamic adjustments) of the original speed limit in highway section, and variable speed-limit sign 1 is for being lower than 40% (but ratio dynamic adjustments) of the original speed limit in highway section.
3. magnitude of traffic flow detecting unit I/II is a blocked state, when magnitude of traffic flow detecting unit III is unobstructed state
The highway section speed limit of variable speed-limit sign 2 is made as 25% (but the ratio dynamic adjustments) that is lower than the original speed limit in highway section, and variable speed-limit sign 1 is not done setting.
4. magnitude of traffic flow detecting unit I/III is a blocked state, when magnitude of traffic flow detecting unit II is unobstructed state
The highway section speed limit of variable speed-limit sign 1 that will be far away apart from congestion regions is made as 25% (but the ratio dynamic adjustments) that is lower than the original speed limit in highway section, and variable speed-limit sign 2 is not done setting.
5. magnitude of traffic flow detecting unit I is a blocked state, when magnitude of traffic flow detecting unit II/III is unobstructed state
The highway section speed limit of variable speed-limit sign 1 that will be nearer apart from congestion regions is made as 15% (but the ratio dynamic adjustments) that is lower than the original speed limit in highway section, and variable speed-limit sign 2 is not done setting.
6. when magnitude of traffic flow detecting unit I is unobstructed state, when magnitude of traffic flow detecting unit II/III is blocked state
Change the speed limit of variable speed-limit sign 1 and 2 simultaneously, variable speed-limit sign 1 is for being lower than 30% (but ratio dynamic adjustments) of the original speed limit in highway section, and variable speed-limit sign 2 is for being lower than 15% (but ratio dynamic adjustments) of the original speed limit in highway section.
7. when magnitude of traffic flow detecting unit I/II is unobstructed state, when magnitude of traffic flow detecting unit III is blocked state
Change the speed limit of variable speed-limit sign 1 and 2 simultaneously, variable speed-limit sign 1 is for being lower than 15% (but ratio dynamic adjustments) of the original speed limit in highway section, and variable speed-limit sign 2 is for being lower than 5% (but ratio dynamic adjustments) of the original speed limit in highway section.
8. when magnitude of traffic flow detecting unit I/III is unobstructed state, when magnitude of traffic flow detecting unit II is blocked state
Change the speed limit of variable speed-limit sign 1 and 2 simultaneously, variable speed-limit sign 1 is for being lower than 25% (but ratio dynamic adjustments) of the original speed limit in highway section, and variable speed-limit sign 2 is for being lower than 15% (but ratio dynamic adjustments) of the original speed limit in highway section.
Though the present invention elaborates it by embodiment; but; the any form that does not exceed the claim protection domain that those skilled in the art should be understood that on this basis to be made and the variation of details all belong to invention which is intended to be protected.
Claims (8)
1. a traffic control system that improves road passage capability comprises a plurality of traffic controls station that is arranged on the highway section, and described a plurality of traffic controls station is connected to a host computer, and each traffic control station comprises:
Magnitude of traffic flow detecting unit: be spaced apart at least two magnitude of traffic flow detecting units that 500-2000 rice is arranged on the section in traffic direction highway section, be used to gather traffic flow information, and calculate the roadway occupancy data according to the traffic flow information that collects;
Local control module: receive the roadway occupancy data of described magnitude of traffic flow detecting unit transmission, and according to the speed limit of traffic instructions control setting in the variable information plate demonstration of the section in traffic direction highway section;
It is characterized in that:
Also comprise the data parsing judging unit, described data parsing judging unit comprises:
Data reception module: receive the roadway occupancy data of described local control module transmission and the data of host computer transmission;
Data resolution module: the roadway occupancy data parsing that described data reception module is received can the recognition data pattern for the traffic judge module, is the enough recognition data patterns of local control module with the data parsing of described host computer;
The traffic judge module: the traffic of place, described traffic control station site of road is judged in the roadway occupancy data of resolving according to described data resolution module and the instruction of described host computer, forms described traffic instructions signal;
Data transmission module: with described traffic judge module generate the traffic instructions signal transfer to described local control module.
2. the traffic control system of raising road passage capability according to claim 1 is characterized in that:
Described host computer receives the traffic related information at each traffic control station, after the road pavement traffic is totally judged respectively to each traffic control station sending controling instruction information.
3. the traffic control system of raising road passage capability according to claim 2 is characterized in that:
Described data reception module comprises:
The first Data Receiving submodule: the roadway occupancy data that receive described local control module transmission;
The second Data Receiving submodule: the data that are used to receive described host computer transmission.
4. the traffic control system of raising road passage capability according to claim 3 is characterized in that:
Described data resolution module comprises:
First data resolution module: be used to resolve the roadway occupancy data that the first Data Receiving submodule is received;
Second data resolution module: the data that are used to resolve the host computer transmission that the second Data Receiving submodule receives.
5. the traffic control system of raising road passage capability according to claim 4 is characterized in that:
The speed limit that described local control module shows by variable information plate driver element control variable information plate.
6. the traffic control system of raising road passage capability according to claim 5 is characterized in that:
Described magnitude of traffic flow detecting unit is three, is followed successively by magnitude of traffic flow detecting unit I, magnitude of traffic flow detecting unit II and magnitude of traffic flow detecting unit III along the section in traffic direction highway section.
7. a method that improves road passage capability is characterized in that, comprises the steps:
A, at least two magnitude of traffic flow detecting units of section setting in traffic direction highway section, be spaced apart 500-2000 rice between the described magnitude of traffic flow detecting unit;
B, magnitude of traffic flow detecting unit detect the traffic flow information of place section, and calculate the roadway occupancy data, with the roadway occupancy data transmission to local control module;
C, described data reception module receive the data of roadway occupancy data that described local control module transmits and host computer transmission and transmit it to the data parsing unit, can the recognition data pattern for the traffic judge module by described data resolution module to the roadway occupancy data parsing of receiving, be the enough recognition data patterns of local control module with the data parsing of described host computer; The traffic of place, described traffic control station site of road is judged in the roadway occupancy data that described traffic judge module is resolved according to described data resolution module and the instruction of described host computer, forms described traffic instructions signal; And the traffic instructions signal transferred to local control module by described data transmission module, local control module is according to the described traffic instructions signal controlling variable information plate driver element of receiving, and then the speed limit that shows of control variable information plate.
8. the method for raising road passage capability according to claim 7 is characterized in that:
Magnitude of traffic flow detecting unit among the described step a is three, is followed successively by magnitude of traffic flow detecting unit I, magnitude of traffic flow detecting unit II and magnitude of traffic flow detecting unit III along the section in traffic direction highway section.
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| CN102568226B (en) * | 2011-12-16 | 2015-04-08 | 东南大学 | High speed variable speed limit control method based on adverse weather conditions |
| CN102568226A (en) * | 2011-12-16 | 2012-07-11 | 东南大学 | High speed variable speed limit control method based on adverse weather conditions |
| CN103021176A (en) * | 2012-11-29 | 2013-04-03 | 浙江大学 | Discriminating method based on section detector for urban traffic state |
| CN103021176B (en) * | 2012-11-29 | 2014-06-11 | 浙江大学 | Discriminating method based on section detector for urban traffic state |
| CN103606269B (en) * | 2013-11-27 | 2015-09-23 | 东南大学 | A kind of control method improving traffic efficiency of freeway construction area |
| CN103606269A (en) * | 2013-11-27 | 2014-02-26 | 东南大学 | Control method for improving traffic efficiency of freeway construction area |
| CN103606268A (en) * | 2013-11-27 | 2014-02-26 | 东南大学 | Variable speed-limit control method of congested upper streams of snowy expressway |
| CN103606268B (en) * | 2013-11-27 | 2015-09-23 | 东南大学 | A kind of snow sky through street blocks up upstream variable speed-limiting control method |
| CN104794919A (en) * | 2015-04-28 | 2015-07-22 | 辽宁省交通规划设计院 | Real-time optimal configuration method for lane resources of multi-lane expressway |
| CN104794919B (en) * | 2015-04-28 | 2016-03-02 | 辽宁省交通规划设计院 | A kind of autoroute track resource real-time optimization collocation method |
| CN107146434A (en) * | 2017-06-30 | 2017-09-08 | 北京中交华安科技有限公司 | Show the method and system of speed-limiting messages |
| CN109215339A (en) * | 2018-08-24 | 2019-01-15 | 浙江大学 | A kind of road instruction system and method based on real-time road analysis |
| CN109215339B (en) * | 2018-08-24 | 2020-09-22 | 浙江大学 | Road indicating system and method based on real-time road condition analysis |
| CN110246348A (en) * | 2019-04-10 | 2019-09-17 | 中冶南方工程技术有限公司 | A kind of through street intelligent speed-limiting device |
| CN111028505A (en) * | 2019-11-28 | 2020-04-17 | 北京世纪高通科技有限公司 | Traffic jam treatment method and device |
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Application publication date: 20110413 |