CN201218988Y - Collection system for characteristic parameter of urban fast road intercommunicated intersection traffic flow - Google Patents
Collection system for characteristic parameter of urban fast road intercommunicated intersection traffic flow Download PDFInfo
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- CN201218988Y CN201218988Y CNU2008200741314U CN200820074131U CN201218988Y CN 201218988 Y CN201218988 Y CN 201218988Y CN U2008200741314 U CNU2008200741314 U CN U2008200741314U CN 200820074131 U CN200820074131 U CN 200820074131U CN 201218988 Y CN201218988 Y CN 201218988Y
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Abstract
The utility model discloses a city quick road intercommunication interchange traffic flow characteristic parameter acquisition system, comprising a data acquisition module, a data processing module and a data output module which are respectively connected with the computer, where the data acquisition module comprises a plurality of vehicle magnetic image traffic analyzers, vehicle subtype statistical systems, global positioning systems and video cameras. The data acquisition module also comprises a photographic camera and a manual counter. The vehicle magnetic image traffic analyzer uses a NC-97 type vehicle magnetic image traffic analyzer and the vehicle subtype statistical system uses a MetroCount vehicle subtype statistical system. The connection between the data acquisition module and the computer is the connection between each apparatus port in the data acquisition module and the computer port. The data processing module comprises data processing subsystems in each apparatus and an AutoCAD computer aided design module and a document processing module. The obtained quick road traffic flow features can provide a lot of science base data for the layout, design and management of the quick road.
Description
Technical field
The utility model relates to a kind of data acquisition system (DAS) that is used for the planning and design of city expressway interchange, especially relates to a kind of data acquisition system (DAS) that is used for the design of Simulation of city expressway interchange.
Background technology
City expressway (urban expressway) is built for satisfying high capacity in the city, long distance, rapid transit, dividing strip, the roadnet that adopts totally-enclosed, full-overpass, all or part of control to come in and go out continuously in the middle of being provided with.The through street provides each interregional function of carrying out quick, safe, comfortable traffic trip in the city for vehicle.And hinge type interchange is the important transport node in the system of through street, is the key that maximum function be brought into play in the decision through street can.Therefore whether most important the scientific rationality of the scale of hinge type interchange and form is.
At present, since socioeconomic fast development, the city extension, population and land scale constantly enlarge, and trans-regional in the city, branch is formed a team, passenger-cargo traffic of long distance increases considerably, and has increased the traffic pressure of present situation road network.For the contradiction between the transport need of alleviating sharp increase and the limited road traffic facility.Though build in a large number in the whole nation through street in recent years, to the through street systematic research, particularly the research of the traffic stream characteristics of through street hinge interchange and the traffic capacity still belongs to blank.The city develops rapidly, causes the urban transportation demand rapidly to increase, and causes imbalance between supply and demand to strengthen.Especially during morning, evening peak, traffic congestion often occurs in gateway, interchange district and interwoven region, makes the interchange district become " traffic bottlenecks " location of through street system.For this reason, must carry out research, with planning, design and the traffic administration of scientific guidance city expressway to the through street interchange traffic capacity.
In carrying out the research of the quick interchange traffic capacity, how to collect comprehensively, accurately, reasonably existing interchange traffic flow character parameter is vital, at present, does not also have the interchange traffic stream characteristics parameter acquisition device of complete function.
The utility model content
For overcome in the above-mentioned prior art deficiency, the utility model provides a kind of city expressway interchange traffic flow character parameter acquisition system, this system not only can make things convenient for, collect comprehensively, apace the traffic flow character parameter, but also can represent this characteristic parameter with diagramatic way, its output form variation provides the basic data of science for the research of the city expressway interchange traffic capacity.
In order to solve the problems of the technologies described above, the technical scheme that the utility model city expressway interchange traffic flow character parameter acquisition system is achieved is: this system comprises data acquisition module, data processing module and the data outputting module that connects with computing machine respectively, and described data acquisition module comprises a plurality of vehicle magnetic reflection traffic analysis, vehicle somatotype statistical system, the global positioning system video camera of unifying; Described data acquisition module also comprises camera and manual counter; Described vehicle magnetic reflection traffic analysis adopts NC-97 type vehicle magnetic reflection traffic analysis, and described vehicle somatotype statistical system adopts MetroCount vehicle somatotype statistical system; Described data acquisition module and connecting of computing machine are the connecting of each instrument port and computer port in the described data acquisition module.
The utility model city expressway interchange traffic flow character parameter acquisition system, wherein, described data processing module comprises data process subsystem and AutoCAD computer-aided design (CAD) module and the document process module that is arranged in each instrument.
Compared with prior art, the beneficial effect that the utility model had is: owing to adopted the acquisition instrument of advanced technology in the utility model city expressway interchange traffic flow character parameter acquisition system, recording traffic flow, the speed of a motor vehicle, length over ends of body exactly, measured datas such as wet and slippery aridity and road utilization rate are shown on record road table temperature, road; And calculate traffic flow character parameters such as time headway, density.Utilize the document process module to generate the document that comprises coordinate and time after rejecting invalid data, and adopt AutoCAD computer-aided design (CAD) module to mark the CAD figure of vehicle driving trace.Finally, data outputting module is with different file layouts such as data form, chart or graphic form output result, and the through street traffic stream characteristics that is obtained is for planning, design and the management of through street provides a large amount of scientific basic data.
Description of drawings
Fig. 1 is the structured flowchart of the utility model city expressway interchange traffic flow character parameter acquisition system;
Fig. 2 is that acquisition instrument is arranged synoptic diagram in the basic highway section, through street;
Fig. 3 is that interflow district acquisition instrument is arranged synoptic diagram;
Fig. 4 is that the shunting zone acquisition instrument is arranged synoptic diagram;
Fig. 5 is that interwoven region and ring road gateway acquisition instrument are arranged synoptic diagram;
Fig. 6 is that left-hand rotation semi-directional, directed ring road acquisition instrument are arranged synoptic diagram;
Fig. 7 is that the loop ramp acquisition instrument is arranged synoptic diagram;
Fig. 8 is the interwoven region vehicle behavior observation program synoptic diagram of changing trains;
Fig. 9 is interflow district's vehicle behavior observation program synoptic diagram of changing trains.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1, the utility model city expressway interchange traffic flow character parameter acquisition system comprises data acquisition module, data processing module and the data outputting module that connects with computing machine respectively, and described data acquisition module comprises that a plurality of vehicle magnetic reflection traffic analysis, vehicle somatotype statistical system, GPS, video camera, camera and manual counter etc. also comprise other article and consumptive material such as tape measure, grade rod, ail gun, hammer, nail, adhesive tape, reflective vest, hard shoulder or the like.Described data acquisition module and connecting of computing machine are the connecting of each instrument port and computer port in the described data acquisition module.Described data processing module comprises data process subsystem and AutoCAD computer-aided design (CAD) module and the document process module that is arranged in each instrument.
The utility model city expressway interchange traffic flow character parameter acquisition system, wherein, described vehicle magnetic reflection traffic analysis has been selected advanced in the world NC-97 type vehicle magnetic reflection traffic analysis, its function is recording traffic flow, the speed of a motor vehicle, length over ends of body, and wet and slippery aridity and road utilization rate etc. are shown in record road table temperature, road; Can calculate time headway, density etc.Described vehicle somatotype statistical system adopts MetroCount vehicle somatotype statistical system, and its function is can calculate speed, flow, time headway, wheelbase, the number of axle etc. by the moment of writing down axletree process sensor.The GPS GPS can provide high-precision vehicle location information, record travel speed, time and driving trace.Set up video camera aloft, take road and traffic conditions, write down road conditions, the volume of traffic, traffic composition and main line and ring road interleaving process; Can together use with above-mentioned relevant acquisition instrument, reject the fail data that volume of traffic Acquisition Instrument collects; Combining road is executed the graticule of drawing, and carries out the vehicle position calibration of changing trains.Computing machine is used for being provided with the essential information of data collecting instrument and stores data.Camera is used for taking the scene photograph of each side such as road conditions, transportation condition, instrument laying.Manual counter cooperates stopwatch to be used for synchronous recording and divides the peak hour traffic of interflow district and interwoven region.
The data collection task main contents comprise in the city expressway interchange traffic flow character parameter acquisition system, the manual research of Turning movement on the bridge and under the bridge, the data acquisition of basic highway section, branch/interflow district, interwoven region and ring road, and running qualities of a wagon observation etc.These measured datas are used for the analysis of grade separation traffic characteristics on the one hand, are used for demarcation, checking and the emulation experiment of theoretical analysis, realistic model on the other hand.The basic road traffic delay in through street observed to obtain the through street traffic stream characteristics, for planning, design and the management of through street provides foundation.
Embodiment:
Below with on the through street, inner city, Tianjin to defend upright three collections with through street interchange traffic flow character parameter of typical case's representative of elder brother's grade separation, Tianjin, Tianjin elder brother's grade separation and Tianjin Jin Tang be that example is described instrument layout of the present utility model, data acquisition, processing and output procedure:
(1) laid polylith NC-97 Acquisition Instrument on two-way 8 tracks in basic highway section, through street, write down other track vehicle for preventing NC-97, instrument is staggeredly arranged, Fig. 2 is instrument layout figure.
(2) branch/interflow district traffic characteristics is than basic highway section complexity.Especially the traffic characteristics of outermost track before and after branch/junction of two streams can change.Mainly adopt the sectional observation method during observation.Use NC-97 and MetroCount, can obtain the data such as speed, the volume of traffic, time headway of each track branch vehicle, interflow district instrument layout as shown in Figure 3, the shunting zone instrument layout is as shown in Figure 4.
(3) interwoven region is the most complicated zone of traffic flow operation, also is the key factor that influences the interchange traffic capacity.For the ease of analyzing the traffic characteristics of interwoven region, respectively interwoven region and ring road gateway are carried out data acquisition, concrete instrument layout is as shown in Figure 5.Mainly adopt sectional observation method and artificial counting method during observation.Use NC-97 and MetroCount, can obtain the data such as speed, the volume of traffic, time headway of each track branch vehicle.The artificial observation point is set simultaneously, uses mechanical counter, record is by the vehicle flowrate data and the weaving vehicles situation of observation station.
(4) ring road is the important channel of viaduct and peripheral path contact, and the form of ring road has determined the form of interchange.The horizontal curve of ring road and the array configuration of longitudinal gradient are to also more complicated of the influence of the traffic capacity.Three viaducts of above-mentioned selection have comprised all ring roads than common type, comprise left-hand rotation semi-directional ring road, S type right-hand rotation ring road and loop ramp.Adopt the specific road section observation method.Use NC-97 and MetroCount, can obtain the data such as speed, the volume of traffic, time headway of each track branch vehicle.
For the semi-directional ring road (for example: Tianjin elder brother's grade separation), every day is early during evening peak, the vehicle that commutes urban district and Beijing, airport, Tanggu District in a large number all passes through this semi-directional ring road, and the volume of traffic is bigger, this ring road is carried out careful observation help to analyze its traffic capacity by measured data.NC-97 is distributed in each key point of ring road gathers, at the end, slope and top, slope the speed of two MetroCount calculating vehicles on the end, slope and top, slope is installed respectively simultaneously.
For directed ring road (for example: Tianjin, Tianjin elder brother's grade separation), every day is early during evening peak, the vehicle that commutes urban district and Tanggu District in a large number all passes through this directed ring road, and the volume of traffic is bigger, this ring road is carried out careful observation help to analyze its traffic capacity by measured data.NC-97 is distributed in each key point of ring road gathers, at the end, slope and top, slope the speed of two MetroCount calculating vehicles on the end, slope and top, slope is installed respectively simultaneously.For the instrument layout of semi-directional ring road and directed ring road as shown in Figure 6.
For S type right-hand rotation ring road (for example: Tianjin Jin Tang grade separation),, a NC-97 has been installed, has gathered the speed of a motor vehicle, be used for demarcating the vehicle desired speed of realistic model at linear least favorable and speed of a motor vehicle lowest part.
For loop ramp (for example: Tianjin Jin Tang grade separation) because its four radiuses are all less, have near minimum limit value, therefore very typical.Because the flow of ring road whole day is little, study its traffic capacity with method of emulation, so mainly adopt the speed of NC-97 recording traffic stream, the speed of a motor vehicle that is used to demarcate this ring road.For the instrument layout of S type right-hand rotation ring road and belt ring road as shown in Figure 7.
The collecting method of position of changing trains is: at first from an end of interflow district and interwoven region, spray a white line every 10 meters on the road surface, up to the other end.The frame video camera is taken the vehicle operating process aloft then, by the later stage statistical study, calibrate vehicle generally change trains track pitch from pressure change trains track pitch from.Field conduct such as Fig. 8 and shown in Figure 9.Wherein, 31 meters and 27 meters of interwoven region upstream and downstream triangle end water conservancy diversion line lengths, the interwoven region dashed centre line is 2 meters-4 meters, the main line dashed centre line is 6 meters-9 meters; 45 meters+36 meters=81 meters of interflow district upstream triangle end water conservancy diversion line lengths, interflow district center dotted line is 6 meters-9 meters.
Global position system GPS can the shortest position coordinates every 0.1 second registration of vehicle place, thereby can calculate the speed and the acceleration of vehicle.Therefore, utilizing this power of GPS can carry out on the acceleration-deceleration characteristic observation of typical vehicle and the various ring road changes in vehicle speed characteristic observes.The ring road that adopts GPS to observe comprises: right-hand rotation ring road, semi-directional ring road, loop ramp, S type right-hand rotation ring road.Typical case's vehicle comprises minicar (as: Xiali), minibus (as: Beijing jeep), motor bus (as the gold dragon), load-carrying lorry (as the many sharp cards of east wind).
Go through traffic study in many days, collected through street, above-mentioned three Tianjin typical case interchange several more than 300 hours traffic flow data, form the data processing summary sheet through the processing of data processing module, as shown in the table.
The data processing summary sheet
More than Guan Ce data can be analyzed with instrument its data processing module or related-data handling module, for traffic circle test car licence plate data and gps data, can adopt traffic circle ratio of turning program under two kinds of different priority of " craspedodrome-left-hand rotation-right-hand rotation " and " craspedodrome-right-hand rotation-left-hand rotation ", per 5 minutes license plate data to be mated statistics respectively, obtain the traffic direction of each car that enters the mouth, thereby determine ratio of turning.In addition, the gps data handling procedure can intercept the data of random time section, utilizes the document process module to generate the document that comprises coordinate and time behind the rejecting invalid data, and adopts AutoCAD computer-aided design (CAD) module to mark the CAD figure of vehicle driving trace.Finally, data outputting module is with different file layouts such as data form, chart or graphic form output result, and the through street traffic stream characteristics that is obtained is for planning, design and the management of through street provides a large amount of scientific basic data.
In sum, utilize the utility model parameter acquisition system, collected basic highway section, through street, the traffic flow character parameter of interchange branch/interflow district, interwoven region and various ring roads by to the district's observation of city expressway typical case interchange; For the later stage is set up the Traffic Capacity Analysis model that corresponding database and traffic capacity theoretical analysis model, the speed of determining service level and density, foundation are fit to this city expressway interchange traffic stream characteristics, finally instruct the design of city expressway interchange type selecting to lay a good foundation with this model.
Although in conjunction with the accompanying drawings the utility model has been carried out foregoing description; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; under the situation that does not break away from the utility model aim, can also make a lot of distortion, these all belong to the row of protection of the present utility model.
Claims (2)
1. city expressway interchange traffic flow character parameter acquisition system, comprise the data acquisition module, data processing module and the data outputting module that connect with computing machine respectively, it is characterized in that described data acquisition module comprises a plurality of vehicle magnetic reflection traffic analysis, vehicle somatotype statistical system, the global positioning system video camera of unifying; Described data acquisition module also comprises camera and manual counter; Described vehicle magnetic reflection traffic analysis adopts NC-97 type vehicle magnetic reflection traffic analysis, and described vehicle somatotype statistical system adopts MetroCount vehicle somatotype statistical system; Described data acquisition module and connecting of computing machine are the connecting of each instrument port and computer port in the described data acquisition module.
2. city expressway interchange traffic flow character parameter acquisition according to claim 1 system, it is characterized in that: described data processing module comprises data process subsystem and AutoCAD computer-aided design (CAD) module and the document process module that is arranged in each instrument.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008200741314U CN201218988Y (en) | 2008-03-20 | 2008-03-20 | Collection system for characteristic parameter of urban fast road intercommunicated intersection traffic flow |
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| CNU2008200741314U CN201218988Y (en) | 2008-03-20 | 2008-03-20 | Collection system for characteristic parameter of urban fast road intercommunicated intersection traffic flow |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163369A (en) * | 2010-02-24 | 2011-08-24 | 交通运输部公路科学研究所 | Road running speed acquisition system |
| CN102201021A (en) * | 2011-04-27 | 2011-09-28 | 天津市市政工程设计研究院 | Expressway aided design system |
| CN103456163A (en) * | 2012-06-04 | 2013-12-18 | 北京市市政工程设计研究总院 | City expressway interchange traffic capacity and running status discrimination method and system |
| CN104318775A (en) * | 2014-11-10 | 2015-01-28 | 天津市市政工程设计研究院 | Control stage express way off-ramp-ground road intersection integrated design method |
| CN114758493A (en) * | 2022-03-21 | 2022-07-15 | 山东省交通规划设计院集团有限公司 | Expressway traffic flow monitoring method and system based on data fusion |
-
2008
- 2008-03-20 CN CNU2008200741314U patent/CN201218988Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163369A (en) * | 2010-02-24 | 2011-08-24 | 交通运输部公路科学研究所 | Road running speed acquisition system |
| CN102201021A (en) * | 2011-04-27 | 2011-09-28 | 天津市市政工程设计研究院 | Expressway aided design system |
| CN103456163A (en) * | 2012-06-04 | 2013-12-18 | 北京市市政工程设计研究总院 | City expressway interchange traffic capacity and running status discrimination method and system |
| CN104318775A (en) * | 2014-11-10 | 2015-01-28 | 天津市市政工程设计研究院 | Control stage express way off-ramp-ground road intersection integrated design method |
| CN104318775B (en) * | 2014-11-10 | 2016-11-30 | 天津市市政工程设计研究院 | Ring road-surface road cross and span distance method under control stage through street |
| CN114758493A (en) * | 2022-03-21 | 2022-07-15 | 山东省交通规划设计院集团有限公司 | Expressway traffic flow monitoring method and system based on data fusion |
| CN114758493B (en) * | 2022-03-21 | 2024-03-12 | 山东省交通规划设计院集团有限公司 | Expressway traffic flow monitoring method and system based on data fusion |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin Saiying Engineering Construction Consulting Management Co., Ltd. Assignor: Tianjin City Design Inst. of Municipal Engineering Contract record no.: 2010120000178 Denomination of utility model: Collection system for characteristic parameter of urban fast road intercommunicated intersection traffic flow Granted publication date: 20090408 License type: Exclusive License Record date: 20101220 |
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| CX01 | Expiry of patent term |
Granted publication date: 20090408 |
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| CX01 | Expiry of patent term |