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Vehicle parking time calculation method based on number plate data

A technology of parking times and calculation methods, applied in the field of intelligent transportation research, can solve the problems of uneven distribution, low data sample rate of floating cars, affecting the accuracy and precision of parking times, etc., and achieve the effect of easy engineering implementation.

Active Publication Date: 2017-06-13
ZHEJIANG UNIV
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Problems solved by technology

[0004] In the previous methods for calculating the number of parking times, the sample rate of floating car data that is widely used is low, and its distribution in the urban road network is uneven, which affects the accuracy and precision of the number of parking times, and it is impossible to obtain the data of all vehicles. Number of stops

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  • Vehicle parking time calculation method based on number plate data
  • Vehicle parking time calculation method based on number plate data
  • Vehicle parking time calculation method based on number plate data

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Embodiment Construction

[0063] Below in conjunction with accompanying drawing, the present invention is described in detail, as figure 1 Shown, the specific steps of the present invention are as follows.

[0064] Step 1, calculate the signal period scheme of the intersection:

[0065] Let the license plate data pass at the downstream time t i , using a bottom-up hierarchical clustering method, when the inter-class distance is period C, K clusters are obtained, and each cluster corresponds to a period.

[0066] Calculate the start time S of a certain phase in the k-th period through the downstream passing time contained in the k-th cluster k , which is the earliest downstream passing time in the kth cluster, then the end time of the cycle is the start time S of the k+1th cycle k+1 :

[0067] S k = t i,min -a

[0068] In the formula, S k ——the start time of a certain phase in the kth cycle;

[0069] t i,min ——the earliest downstream passing time in the kth cluster;

[0070] a——Adjustment par...

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Abstract

The invention discloses a vehicle parking time calculation method based on number plate data. The signal cycle program of an intersection, the parking times of effective vehicles, the parking times of other vehicles and the average parking times of vehicles are calculated by combining urban road travel time characteristics based on the number plate data. The method provided by the invention provides a solid foundation for urban traffic control and can also provide dynamic decision-making basis for traffic participants. Meanwhile, the travel time data characteristics are fully utilized by the method, the parameter calculation does not rely on artificial selection, and the project is easily realized.

Description

technical field [0001] The invention relates to a method for calculating the parking times of a vehicle through license plate data, serves for urban traffic control and management, and belongs to the field of intelligent traffic research. Background technique [0002] Obtaining the travel time of the vehicle through the license plate data, and then calculating the number of vehicle parking, can provide a solid foundation for urban traffic control, and can also provide dynamic decision-making basis for traffic participants, thereby inducing the healthy development of urban traffic. [0003] At present, the research on the number of vehicle parking on urban roads mainly focuses on the application of parking times, and the acquisition of parking times is mainly through vehicle trajectory data, such as floating car data. The accurate calculation of the number of stops can serve traffic status evaluation, traffic signal control, and can also be used to calculate other traffic par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01
CPCG08G1/0112G08G1/0125
Inventor 王殿海罗小芹龚越金盛马东方
Owner ZHEJIANG UNIV
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