A method for identifying and compensating for missing vehicle trajectories

A vehicle trajectory and compensation method technology, applied in the field of Internet of Vehicles, can solve the problems of manual compensation, such as heavy workload, missing driving trajectory, and low efficiency, and achieve the effects of simple and efficient compensation method, accurate and reasonable judgment, and improved accuracy

Active Publication Date: 2021-04-27
中科美络科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when the vehicle is driving, the vehicle-mounted terminal with a satellite positioning module can record the position coordinates of the vehicle at different times, and send the position coordinates at different times to the server, and generate a moving track by matching with the electronic map to represent However, during the driving process of the vehicle, there are often situations where the satellite positioning module of the vehicle-mounted terminal cannot receive the satellite positioning signal. For example, the satellite positioning signal of the vehicle is blocked by tall buildings, trees or tunnels, causing some road sections to fail to receive satellites. The positioning signal causes the missing of the vehicle's driving trajectory, which will lead to the generation of discontinuous motion trajectory, resulting in the loss of the vehicle's driving trajectory, resulting in the inability to present an accurate motion trajectory to the user, which is not conducive to subsequent motion analysis of the vehicle's driving trajectory
The lack of existing vehicle trajectories is usually discovered by the user or operation and maintenance personnel by viewing the vehicle trajectories in the map with the naked eye, and by calling the Baidu interface for path planning, manual adjustments for unreasonable planned paths, manual trajectory compensation, and manual compensation Heavy workload and low efficiency

Method used

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  • A method for identifying and compensating for missing vehicle trajectories
  • A method for identifying and compensating for missing vehicle trajectories
  • A method for identifying and compensating for missing vehicle trajectories

Examples

Experimental program
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Embodiment 1

[0047] Such as figure 1 As shown, this embodiment discloses a vehicle track missing identification method, comprising the following steps:

[0048] S1: Obtain all positioning information of the trajectory of the vehicle to which the target vehicle-mounted terminal belongs within a preset time period; wherein, the positioning information includes coordinate information of the positioning point and corresponding time information of the positioning point.

[0049] S2: Calculate the time interval between each pair of adjacent positioning points according to all the positioning information obtained;

[0050] S3: Calculate the mode according to each calculated time interval;

[0051] Among them, the mode is the most common time interval among adjacent positioning points. Since various types of terminals have different transmission frequencies, and the transmission frequency of the same terminal will fluctuate up and down in different situations, the calculated mode is compared with...

Embodiment 2

[0055] The present invention also discloses a vehicle track loss compensation method. The method first uses the track loss identification method described above to determine the track loss. The track loss compensation method includes:

[0056] Determine the vehicle compensation trajectory between the adjacent positioning points of the target whose trajectory is missing according to the preset path determination method; in the embodiment of the present invention, it specifically includes:

[0057] The electronic map is invoked to plan the path between the adjacent positioning points of the target whose trajectory is missing to obtain the planned path; wherein, the electronic map is pre-stored in the management server, and the electronic map has the function of planning the path. Obtain the historical driving trajectory between the target adjacent positioning points where the vehicle trajectory of the target vehicle-mounted terminal is missing within the preset time period, and p...

Embodiment 3

[0059] In the embodiment of the present invention, the method for determining the vehicle compensation trajectory between the target adjacent anchor points with missing trajectories is different from the method for determining the vehicle compensation trajectory between the target adjacent anchor points with missing trajectories in Embodiment 2, in that The method is: obtain all historical driving trajectories and corresponding historical time intervals between target adjacent positioning points with missing vehicle trajectories to which the target vehicle-mounted terminal belongs within a preset time period; The time interval between the positioning points is calculated as the difference, and the historical driving trajectory corresponding to the historical time interval closest to zero in the calculation result is determined as the vehicle compensation trajectory. Normally, since the time required for the vehicle to travel on the same path is basically the same, this embodime...

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Abstract

The invention discloses a vehicle trajectory missing identification and compensation method. The identification method is as follows: obtaining all positioning information of the vehicle trajectory to which the target vehicle-mounted terminal belongs within a preset period of time; The time interval of the points; according to the calculated time intervals, calculate the mode; judge the time interval between each pair of adjacent positioning points and the mode * preset ratio, and determine the adjacent positioning of the target that is greater than the mode * preset ratio point; judge whether the distance between the adjacent positioning points of the target is greater than the preset distance, and if so, determine that the trajectory between the adjacent positioning points of the target is missing. The invention can accurately identify the missing track between adjacent positioning points, and automatically compensate the missing track of the vehicle, realizes the automation of the missing track and compensation of the vehicle, and improves the identification and compensation efficiency of the missing track of the vehicle.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles, in particular to a vehicle track missing identification and compensation method. Background technique [0002] At present, when the vehicle is driving, the vehicle-mounted terminal with a satellite positioning module can record the position coordinates of the vehicle at different times, and send the position coordinates at different times to the server, and generate a moving track by matching with the electronic map to represent However, during the driving process of the vehicle, there are often situations where the satellite positioning module of the vehicle-mounted terminal cannot receive the satellite positioning signal. For example, the satellite positioning signal of the vehicle is blocked by tall buildings, trees or tunnels, causing some road sections to fail to receive satellites. The positioning signal causes the lack of vehicle trajectory, which will lead to the generation o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W4/029H04W4/44
CPCH04W4/023H04W4/029H04W4/44
Inventor 罗健飞吴仲城
Owner 中科美络科技股份有限公司
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