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Road travel time refined calculation method based on identity detection data

A technology of travel time and calculation method, which is applied in traffic flow detection, traffic control system of road vehicles, instruments, etc., can solve the problem of insufficient accuracy of travel time estimation algorithm, and achieve high implementation efficiency and practical application value, calculation method Simple, calculation accuracy guaranteed effect

Inactive Publication Date: 2019-03-26
SUN YAT SEN UNIV
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Problems solved by technology

[0005] The present invention overcomes the above-mentioned technical defects of insufficient accuracy of the existing travel time estimation algorithm, and provides a new refined calculation method of road segment travel time based on identity detection data, which satisfies the accuracy requirement in the travel time estimation algorithm Require

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  • Road travel time refined calculation method based on identity detection data
  • Road travel time refined calculation method based on identity detection data
  • Road travel time refined calculation method based on identity detection data

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Embodiment Construction

[0061] The accompanying drawings are for illustrative purposes only and cannot be construed as limiting the patent;

[0062] For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

[0063] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0064] Such as figure 1 As shown, a refined calculation method for link travel time based on identity detection data includes the following steps:

[0065] S1. Use the license plate number as the identification code to construct the detection sequence of the identity detection equipment for each vehicle;

[0066] The monitoring sequence of identity detection equipment is formed by forming a linked list structure through data nodes. The data nodes include identity detection equipment number, lane number, and vehicle elapsed time; the data nodes are arranged in the...

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Abstract

The invention discloses a road travel time refined calculation method based on identity detection data. The method comprises the steps that S1 a vehicle identity ID is used as an identification code to construct an identity detection device detection sequence of each vehicle; S2 in a preset time period t, a road travel time set is acquired through the identity detection device detection sequence;S3 according to different steering lanes of a downstream intersection, phi m<k> is classified; S4 invalid travel time samples are removed from T m<n> to acquire a preliminary screening set; S5 discontinuous travel samples are removed from the preliminary screening set to acquire a valid travel time sample set; and S6 through the valid travel time sample set, fine road travel time which distinguishes steering is acquired. According to the invention, real-time, accurate and reliable road condition information can be acquired without adding new detection devices; the calculation logic of each road is independent of each other, which prevents error accumulation and guarantees the calculation accuracy; and the calculation method is simple, and has the advantages of high implementation efficiency and practical application value.

Description

technical field [0001] The present invention relates to the field of traffic data analysis, and more specifically, to a refined calculation method for road section travel time based on identity detection data. Background technique [0002] Travel time (travel time), as an important indicator to measure the efficiency of traffic travel, is also an important factor affecting travel experience, and is widely used in traffic status assessment. Related to this, traffic travel service applications such as real-time road condition release and travel route planning have higher and higher requirements for the accuracy of road section / path travel time. With the development and progress of traffic detection methods, the detection data and methods that can be used to calculate road sections and path travel time are gradually increasing, but the methods that can effectively improve the calculation accuracy are quite limited. [0003] At present, major cities in China, and even some smal...

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Application Information

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IPC IPC(8): G08G1/01G08G1/065
CPCG08G1/0125G08G1/065
Inventor 余志邹兵何兆成陈开颖栗波
Owner SUN YAT SEN UNIV
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