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Real-time dynamic information processing method based on car detecting technique

An information processing method and real-time dynamic technology, applied in the field of intelligent transportation, can solve the problems of accuracy, poor real-time performance, and inability to meet users' requirements for real-time road condition information, etc.

Active Publication Date: 2009-02-11
BEIJING RHY TECH DEV
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Problems solved by technology

[0008] To sum up, there are still many specific technical problems that cannot be solved in the existing technology, and the accuracy and real-time performance are poor, which cannot meet the user's requirements for real-time traffic information.

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  • Real-time dynamic information processing method based on car detecting technique
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  • Real-time dynamic information processing method based on car detecting technique

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Embodiment Construction

[0057] The present invention is a method for processing real-time dynamic traffic information based on probe car technology, which is realized through the following steps:

[0058] First, this method aims at the characteristics of the road recognition of the large data set of the probe car, and first establishes a road index structure based on the grid segmentation method.

[0059] On the basis of the electronic map, a road index structure based on grid segmentation method is established.

[0060] (1) see figure 1 , according to the direction of latitude and longitude, the road network is divided into grid blocks from top to bottom and from left to right at a certain interval L(x, y). Suppose it is divided into M×N grids, abbreviated as Grid(M×N), where M and N are the number of rows and columns of the block, the row number of the grid is from 0 to M-1, and the column number is from 0 to N-1. The interval parameter L(x, y) can be determined according to the density of urban...

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Abstract

The invention relates to a real-time dynamic traffic information processing method based on probe vehicle techniques. The method comprises the following steps: (1) reticulating an urban road system, and recording the shape and section numbers of all roads located inside or crossed with each grid; (2) grouping the data sets of a probe vehicle within one period according to the timer sequencing, determining a road aggregate R where the probe vehicle can be located in the mean while according to the geometrical characteristics of the data, calculating the road identification confidence of each road to generate a candidate identified road aggregate Rs, combining a plurality of Rs aggregates to establish a candidate path aggregate: (Rk<*>)(k=1)<K>, searching the candidate path aggregate, identifying several paths from the start-point GPS to the end-point GPS, performing the comprehensive judgment of road identification confidence and length of the paths to obtain the moving track of the probe vehicle; and (3) calculating the average speed per hour on the road according to the length of the moving track between the start-point and the end-point of the probe vehicle, the running time and the road condition history.

Description

technical field [0001] The invention relates to a method for processing real-time dynamic traffic information based on probe car technology in the field of intelligent traffic. Background technique [0002] With the continuous growth of urban traffic demand, higher requirements are put forward for urban traffic infrastructure, traffic planning technology and traffic management methods. The intelligent transportation system based on the intelligent transportation system (Intelligent Transportation System, ITS) platform has become the main research topic of traffic planning and managers. With the development and application of ITS technology, traditional manual investigation methods and induction coils The traffic information collection method has high cost, limited coverage, and long collection period, which can no longer meet the needs of ITS for traffic data. Probe Vehicle (PV) technology based on vehicle GPS technology has become the research and development direction of t...

Claims

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Application Information

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IPC IPC(8): G08G1/01
Inventor 李乐人曾维王海峰孙立
Owner BEIJING RHY TECH DEV
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