Trip chain extraction method based on motor vehicle electronic identification data

An electronic identification and extraction method technology, applied in the field of transportation, can solve problems such as inability to analyze all vehicles, fewer vehicles, and travel data that cannot represent the overall traffic conditions of the entire city

Inactive Publication Date: 2019-10-25
CHONGQING UNIV
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Problems solved by technology

However, there are few vehicles equipped with GPS or Beidou positioning system. Only taxis and two-passenger and one-danger vehicles can be analyzed, and all vehicles cannot be analyzed. As a result, the final travel data cannot represent the overall traffic conditions of the entire city.

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  • Trip chain extraction method based on motor vehicle electronic identification data
  • Trip chain extraction method based on motor vehicle electronic identification data
  • Trip chain extraction method based on motor vehicle electronic identification data

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Embodiment Construction

[0031] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

[0032] One provided by the present invention provides a new travel chain extraction method based on automobile electronic identification data (combined with figure 1 ),include:

[0033] Step S1: Make the daily records of each vehicle into a collection Records. For all records in Records R = (eid, rid, passtime) according to the passing time R · pass Time is sorted in ascending order, and the daily trajectory chain of each vehicle can be obtained Tra={R 1 , R 2 ,...,R n}.

[0034] In this embodiment, the research object is a private car carrying people, so it is necessary to obtain the trajectory chain of the private car through one screening. Among them, the rec...

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Abstract

The invention discloses a trip chain extraction method based on motor vehicle electronic identification data, and the method comprises the following steps of S1: extracting a manned private car trackchain; S2: cleaning redundant data in the track chain; S3: generating a reader successor set Successor Set; S4: performing track completion based on a Markov decision process; and according to the method, redundant data are cleaned, missing data are supplemented, the track chain is finally divided into a plurality of trip chains, and trip characteristics of vehicles can be completely acquired based on analysis of the trip chains, so that the urban traffic state can be better mastered, and better service is provided for construction of smart cities.

Description

technical field [0001] The invention relates to the field of traffic technology, in particular to a method for extracting travel chains based on automobile electronic identification data. Background technique [0002] Since the beginning of the new century, with the rapid development of my country's social economy and the continuous improvement of the level of urbanization, along with the double growth of the number of motor vehicles in urban areas and per capita ownership, a series of transportation difficulties have become more and more prominent. The traffic congestion caused by the inconsistency between the current urban traffic road construction and the sharp increase in the number of motor vehicles has greatly affected the travel experience of residents and brought losses to the national economy. Intelligent transportation is a main direction for people to solve transportation problems, and the extraction of travel chains is particularly important. [0003] At present...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G06F16/29G06F16/215
CPCG08G1/0125G06F16/215G06F16/29
Inventor 郑林江叶于辉孙棣华赵敏
Owner CHONGQING UNIV
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