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System, algorithm, equipment and storage medium for stay point identification and travel chain construction

A technology of stay points and travel chains, applied in the field of intelligent transportation, can solve problems such as time-consuming, information loss, and influence on judgment accuracy, and achieve the effects of accurate segmentation, improved execution speed, simplified complexity and parameter setting process

Active Publication Date: 2022-02-01
SHENZHEN URBAN TRANSPORT PLANNING CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In view of this, this application provides a stay point identification and travel chain construction system, algorithm, equipment and storage medium to solve the problems in the prior art that are time-consuming and information loss affects the accuracy of judgment

Method used

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  • System, algorithm, equipment and storage medium for stay point identification and travel chain construction
  • System, algorithm, equipment and storage medium for stay point identification and travel chain construction
  • System, algorithm, equipment and storage medium for stay point identification and travel chain construction

Examples

Experimental program
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Effect test

Embodiment 1

[0082] Embodiment 1 of the present application provides a stay point identification and travel chain construction system (see figure 1 ), including: a user input module, which is used for the user to set the length of stay of the segmented trajectory and the speed limit of vehicle activities at the stay point in combination with actual needs;

[0083] The data preprocessing module is used to group, aggregate and sort according to the vehicle ID, remove duplicate and abnormal data, and obtain the vehicle data set; calculate the time difference sequence between each piece of data in the data set; combine the length of stay of the segmented track, and cut the data Points, to obtain mutually disjoint sub-segments;

[0084] The adaptive parameter calculation module is used to extract the median value in all segments as the identified vehicle standard machine recording interval, and calculate the inactive state count threshold;

[0085] The stop point labeling module is used to ma...

Embodiment 2

[0087] Embodiment 2 of the present application provides a stay point identification and travel chain construction algorithm (see Figure 2-Figure 5 ), the method is specifically:

[0088] S1, user setting, the specific steps are:

[0089] In view of the actual scene analysis process, there may be differences in the identification standards for travel. For example, in some cases, the stopover of some vehicles is only used as a part of the trip. However, in some scenarios, in order to measure the travel time more accurately, it is necessary to Divide the trip containing the stop action into multiple sub-segments. Therefore, this application allows users to adjust the length of stay for segmenting tracks in combination with actual needs to set, Indicates the maximum time that the current vehicle is allowed to return to when the return signal disappears or is in a low-speed / zero-speed state during a trip. When this time is exceeded, the algorithm judges the last trip state to...

Embodiment 3

[0139] Embodiment 3 of the present application provides an electronic device, see Figure 6 , an electronic device in the form of a general-purpose computing device. Components of an electronic device may include, but are not limited to: one or more processors or processing units, memory for storing computer programs that can run on the processors, connections to different system components (including memory, one or more processors or processing unit) bus.

[0140] Wherein, when the one or more processors or processing units are used to run the computer program, execute the steps of the method described in the second embodiment. The types of processors used include central processing units, general purpose processors, digital signal processors, application specific integrated circuits, field programmable gate arrays or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.

[0141] Wherein, the bus refers to one or more of...

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Abstract

The application discloses a system, algorithm, equipment and storage medium for identification of staying points and construction of travel chains, belonging to the technical field of intelligent transportation. The problems of long time consumption and information loss affecting judgment accuracy existing in the prior art are solved. The user of this application sets the length of stay and the speed limit of vehicle activity at the stop point; aggregates and sorts the data set according to the vehicle ID; calculates the time difference sequence in the data set; combines the length of stay to segment the data to obtain disjoint sub-segments ;Extract the median value in all segments as the recognized vehicle standard machine recording interval, and calculate the inactive state count threshold; conduct OD analysis for each trajectory sub-segment, mark the point of state switching, and obtain the vehicle's multi-day travel start and end point data. This application is used for vehicle operating companies, traffic regulation management departments, and planning departments to quickly analyze and judge the travel rules of large-scale vehicles.

Description

technical field [0001] The application relates to a system, algorithm, equipment and storage medium for vehicle track data identification of stay points and construction of travel chains, in particular to systems, algorithms, equipment and storage media for identification of stay points and construction of travel chains, and belongs to the technical field of intelligent transportation. Background technique [0002] In recent years, with the further popularization of GPS, Beidou and other navigation systems and for various types of operating vehicles, the driving trajectory data of various types of operating vehicles can be obtained and stored by the regulatory authorities. On the one hand, it has created an effective way for real-time supervision based on big data. , on the other hand, it also provides conditions for the construction of vehicle travel chains combined with historical records, and then multi-dimensional analysis and judgment of vehicle travel characteristics. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/903G06F16/906
CPCG06F16/90348G06F16/906
Inventor 丁雪晴刘恒雷焕宇邓远冬凌镜珩阚倩
Owner SHENZHEN URBAN TRANSPORT PLANNING CENT
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