Method for evaluating arterial green wave coordination effect based on mobile terminal

A mobile terminal, trunk line green wave technology, applied in the field of intelligent transportation, can solve the problems of manpower and material resources, the inability to perform real-time online evaluation of road sections, and the inability to achieve real-time evaluation of bicycle tests.

Inactive Publication Date: 2015-06-10
BEIJING UNIV OF TECH
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Problems solved by technology

This method has the following problems in practical application: (1) It consumes a lot of manpower and material resources; (2) The evaluation period is long; (3) It cannot achieve real-time evaluation; (4) There are serious traffic and personal safety hazards
Although this method avoids many deficiencies in manual research, the single-vehicle test cannot achieve real-time evaluation.
[0005] Floating cars mainly obtain a large amount of driving data through rental cars equipped with GPS

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  • Method for evaluating arterial green wave coordination effect based on mobile terminal
  • Method for evaluating arterial green wave coordination effect based on mobile terminal
  • Method for evaluating arterial green wave coordination effect based on mobile terminal

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Embodiment Construction

[0053] The method will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0054] Such as image 3 with Figure 4 As shown in the flow chart of drawing the trajectory space-time diagram, the data processing algorithm is the core content of the entire implementation process. The data processing algorithm mainly realizes the following four aspects of work:

[0055] First, a series of latitude and longitude changes measured by GPS are converted into displacement changes. The earth is a nearly standard ellipsoid, its equatorial radius is 6378.140 km, its polar radius is 6356.755 km, and its average radius is 6371.004 km. If we assume that the earth is a perfect sphere, then its radius is the average radius of the earth, denoted as R. If the 0-degree longitude is used as the reference, the surface distance (theoretical estimate) between any two points on the earth's surface can be calculated according to the latitude and longitud...

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Abstract

The invention discloses a method for evaluating an arterial green wave coordination effect based on a mobile terminal, and the method can output evaluation indexes on line in real time by adopting a green wave coordination effect evaluation algorithm and utilizing the intelligent mobile terminal. The method can obtain single-vehicle traveling data in real time through the intelligent terminal and realize real-time online evaluation of a green wave coordination effect of a single-vehicle test road segment in combination with a data processing algorithm and the green wave coordination control evaluation algorithm, and meanwhile, the evaluation method mainly has two evaluation modes which are drawing of a trajectory space-time diagram and output of the evaluation indexes respectively. Compared with existing common methods such as a manual research method, a single-vehicle test method, a floating vehicle method and the like, the method for evaluating the arterial green wave coordination effect based on the mobile terminal has the advantages of low manpower and material resource consumption, capability of giving out the effect evaluation indexes and optimization suggestions on line in real time, and the like, thereby having very high practicality and a wide application prospect.

Description

technical field [0001] The invention belongs to the field of intelligent transportation, and relates to an intelligent and portable method for evaluating the green wave coordination effect of trunk lines. The intelligent terminal adopts the green wave coordination effect evaluation algorithm to realize online drawing of trajectory space-time diagram and real-time output of evaluation indicators during the driving process of a single vehicle. Background technique [0002] With the rapid development of smart terminal platforms, people increasingly rely on smart mobile terminal platforms such as mobile phones to obtain information in their daily life. The same is true in the field of transportation. Now all countries are making unremitting efforts to build intelligent transportation networks and smart cities. As a relatively mature technology in the field of intelligent transportation, the green wave coordination of trunk lines has been relatively maturely used and promoted in ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 李振龙朱明浩荣建韩建龙董文慧
Owner BEIJING UNIV OF TECH
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