CN102800198B - Measuring and calculating method for traffic flow of section of expressway - Google Patents
Measuring and calculating method for traffic flow of section of expressway Download PDFInfo
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- CN102800198B CN102800198B CN201210290562.5A CN201210290562A CN102800198B CN 102800198 B CN102800198 B CN 102800198B CN 201210290562 A CN201210290562 A CN 201210290562A CN 102800198 B CN102800198 B CN 102800198B
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Abstract
The invention relates to the technical field of traffic information, particularly to a measuring and calculating method for the traffic flow of the section of an expressway without repeated establishment of monitoring equipment or repeated manual investigation. The measuring and calculating method comprises the following steps: 1) obtaining the distance between a section to be detected and an upstream toll station, and the distance between the upstream toll station and a downstream exit toll station; detecting the travel time of a vehicle between the upstream toll station and the downstream toll station, and obtaining the average travel speed of the vehicle between the upstream toll station and the downstream toll station; obtaining the time required for the vehicle to travel from the upstream toll station to the section to be detected according to the obtained distance between the section to be detected and the upstream toll station and the average travel speed of the vehicle; obtaining the time at which the vehicle passes the upstream entrance toll station, and obtaining the time at which the vehicle arrives at the section to be detected according to the obtained time required for the vehicle to travel from the upstream toll station to the section to be detected; and counting the number of vehicles passing the section to be detected in a unit time period according to the obtained time at which the vehicle arrives at the section to be detected, so as to obtain the traffic flow the section of the expressway.
Description
Technical field
The present invention relates to transport information technical field, be specifically related to a kind of measuring method of traffic flow of section of expressway.
Background technology
Along with deepening continuously of reform and opening-up is accelerated with the paces of construction of a comfortably-off society, China's economy is in steady, fast-developing period.The raising of living standards of the people and increasing rapidly of automobile pollution, the lasting quickening of urbanization, motorization process, the adjustment of economic structure and the transformation of the mode of production, will propose renewal, higher requirement to freeway traffic development.Since nineteen nineties, through the joint efforts of the whole society, China's traffic enters developing period best in history.Particularly since 1998, central authorities have made and having expanded domestic demand, the very important decision of accelerating the building of infrastructure, whole nation traffic department catches historic opportunities, go ahead with the advantage and accelerate development paces, highway traffic infrastructure tentatively achieves great-leap-forward development, communications and transportation is effectively alleviated " bottleneck " of socio-economic development restriction, the socioeconomic fast development of powerful support.To the end of the year 2011, China's highway will be open to traffic total kilometrage more than 8.5 ten thousand kilometers, occupy second place of the world.From the growth pattern of highway mileage open to traffic and road network structure, expressway density, China's highway construction scale these years and speed of development are unprecedented, the technical progress of construction level and construction quality is also close to developed country's level, and this makes the overall road network adaptive faculty of China's highway improve rapidly.But in the management of highway and the informatization of highway, technical progress these years and technical merit lag behind the progress of operating technique level comparatively speaking, obvious with the gap of developed country.The collection of traffic data, arrangement, application lag far behind developed country's level, fail to form unified Db Management Model, realize data resource sharing, cause a large amount of valuable basic datas to be fully utilized, cause there is no need repetition, repeatedly investigate.Also result in the deficiency in traffic administration due to the shortage of data resource simultaneously.Traffic flow quantitative analysis for road network is all the more so, when carrying out highway design and construction project study, all do not have systematic, comprehensive freeway net traffic flow data, many expressway construction project are when carrying out engineering feasibility study, a large amount of human and material resources all will be spent to carry out the traffic flow investigation of local, simultaneously due to by condition to limit its data also not accurate enough, comprehensive.Not accurate enough traffic flow data also very easily causes the error of planning or construction project.
Summary of the invention
Given this, in order to solve the problem, the invention discloses a kind of measuring method of traffic flow of section of expressway without the need to duplicate construction monitoring equipment and repetitive manual investigation.
The object of the present invention is achieved like this: the measuring method of traffic flow of section of expressway, comprises the steps:
1) distance between detection section and upstream charge station and the distance between upstream charge station and lower exit charge station is obtained;
2) detect the running time of vehicle between upstream charge station and downstream charge station, and according to the distance between the upstream charge station obtained in step 1) and downstream charge station, obtain the average overall travel speed of vehicle between upstream charge station and downstream charge station;
3) spacing of the detection section and the upstream charge station that obtain according to step 1) and step 2) average overall travel speed of vehicle that obtains, acquisition vehicle drives to the time required for detection section from upstream charge station;
4) obtain vehicle through the moment of upstream entrance charge station, and drive to from upstream charge station the time required for section of detecting according to the vehicle that step 3) obtains, obtain vehicle and drive to the moment detecting section;
5) vehicle obtained according to step 4) drives to the moment detecting section, and the statistical unit time, by the vehicle number of described detection section, obtains traffic flow of section of expressway.
Further, in described step 1), the range data of acquisition is stored in database, step 2,3) in, from database, read required range data.
Further, described step 2) in, obtain the average overall travel speed V of vehicle between upstream charge station and downstream charge station according to following formula:
v=L/Δt；
In above formula, L is the distance between upstream charge station and downstream charge station, and Δ t is the running time of vehicle between upstream charge station and downstream charge station.
Further, in described step 3), obtain vehicle according to following formula and drive to time t required for detection section from upstream charge station:
t=d/v；
In above formula, d is the spacing detecting section and upstream charge station.
Further, in described step 4), obtain vehicle according to following formula and drive to the moment T detecting section:
T=t+T
0；
In above formula, T
0for vehicle is through the moment of upstream entrance charge station.
The beneficial effect of technical scheme provided by the invention is: can improve the management of highway and the IT application level of highway, valuable basic data is fully utilized, avoids overlapping construction, repeatedly investigate, save human and material resources.When carrying out highway design and construction project study, can make system, comprehensively freeway net traffic flow data utilized, avoid spending a large amount of human and material resources to carry out the traffic flow investigation of local.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is schematic flow sheet of the present invention.
Embodiment
Be described in detail to the preferred embodiment of invention below.
See Fig. 1, the measuring method of traffic flow of section of expressway, comprises the steps:
1) obtain and detect the distance between section and upstream charge station and the distance between upstream charge station and lower exit charge station and be stored in database, this range data can actual measurement, also directly can use the existing basic data of highway;
2) running time of vehicle between upstream charge station and downstream charge station is detected, and according to the distance between the upstream charge station obtained in step 1) and downstream charge station, obtain the average overall travel speed V of vehicle between upstream charge station and downstream charge station according to following formula:
v=L/Δt；
In above formula, L is the distance between upstream charge station and downstream charge station, and Δ t is the running time of vehicle between upstream charge station and downstream charge station.
3) spacing of the detection section and the upstream charge station that obtain according to step 1) and step 2) average overall travel speed of vehicle that obtains, drive to time t required for detection section according to following formula acquisition vehicle from upstream charge station:
t=d/v；
In above formula, d is the spacing detecting section and upstream charge station;
4) obtain vehicle through the moment of upstream entrance charge station, and drive to from upstream charge station the time required for section of detecting according to the vehicle that step 3) obtains, obtain vehicle according to following formula and drive to the moment T detecting section:
T=t+T
0；
In above formula, T
0for vehicle is through the moment of upstream entrance charge station;
5) vehicle obtained according to step 4) drives to the moment detecting section, and the statistical unit time, by the vehicle number of described detection section, obtains traffic flow of section of expressway.
The foregoing is only of the present invention and be preferably not limited to the present invention, obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (1)
1. the measuring method of traffic flow of section of expressway, is characterized in that: comprise the steps:
1) distance between detection section and upstream charge station and the distance between upstream charge station and lower exit charge station is obtained;
2) running time of vehicle between upstream charge station and downstream charge station is detected, and according to step 1) in distance between the upstream charge station that obtains and downstream charge station, obtain the average overall travel speed of vehicle between upstream charge station and downstream charge station;
3) according to step 1) spacing of the detection section that obtains and upstream charge station and step 2) average overall travel speed of vehicle that obtains, obtain vehicle and drive to from upstream charge station the time required for section of detecting;
4) vehicle is obtained through the moment of upstream entrance charge station, and according to step 3) vehicle that obtains drives to from upstream charge station the time required for section of detecting, and obtain vehicle and drive to the moment detecting section;
5) according to step 4) vehicle that obtains drives to the moment detecting section, the statistical unit time by the vehicle number of described detection section, acquisition traffic flow of section of expressway;
Wherein, described step 2) in, obtain the average overall travel speed v of vehicle between upstream charge station and downstream charge station according to following formula:
v＝L/Δt；
In above formula, L is the distance between upstream charge station and downstream charge station, and Δ t is the running time of vehicle between upstream charge station and downstream charge station;
Wherein, described step 3) in, obtain vehicle according to following formula and drive to time t required for detection section from upstream charge station:
t＝d/v；
In above formula, d is the spacing detecting section and upstream charge station;
Wherein, described step 4) in, obtain vehicle according to following formula and drive to the moment T detecting section:
T＝t+T
0；
In above formula, T
0for vehicle is through the moment of upstream entrance charge station;
Described step 1) in, the range data of acquisition is stored in database, step 2,3) in, from database, read required range data.
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| CN201210290562.5A CN102800198B (en) | 2012-08-15 | 2012-08-15 | Measuring and calculating method for traffic flow of section of expressway |
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| CN102800198B true CN102800198B (en) | 2015-05-13 |
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Cited By (1)
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| CN110299011A (en) * | 2019-07-26 | 2019-10-01 | 长安大学 | A kind of traffic flow forecasting method of the highway arbitrary cross-section based on charge data |
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| CN103150894B (en) * | 2013-02-01 | 2015-07-15 | 东南大学 | Control method for eliminating traffic jam of expressway principal line toll station through flow |
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| CN108665707B (en) * | 2018-05-24 | 2020-11-27 | 金陵科技学院 | Expressway entrance diversion and flow cooperative control method for preventing local traffic jam |
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| CN113345252B (en) * | 2021-06-08 | 2022-07-22 | 重庆大学 | Short-time prediction method and device for lower-path flow of toll station |
| CN113674538B (en) * | 2021-08-09 | 2023-04-18 | 南京领航交通科技有限公司 | Section flow monitoring system |
| CN114005274B (en) * | 2021-10-21 | 2023-03-03 | 浙江综合交通大数据开发有限公司 | Expressway toll station graded linkage management and control method based on equivalent weight of passenger car |
| CN115148020B (en) * | 2022-06-13 | 2023-06-02 | 中国标准化研究院 | Monitoring system and method based on traffic flow in unit time of expressway |
| CN115393969B (en) * | 2022-07-20 | 2023-09-19 | 招商新智科技有限公司 | Lane control method for ramp toll station for feeding back multi-section traffic state of expressway |
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Effective date of registration: 20201217 Address after: 402460 station No.14, no.6, 10th floor, innovation and development center, No.19 Lingfang Avenue, Changzhou street, Rongchang District, Chongqing Patentee after: Chongqing kezhiyuan Technology Co.,Ltd. Address before: 400030 No. 174 Sha Jie street, Shapingba District, Chongqing Patentee before: Chongqing University |
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