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Traffic jam point identification method based on floating car technology

A traffic jam and identification method technology, applied in the application field of information technology, can solve the problem of inability to realize dynamic update of traffic jam point information, and achieve the effect of timely and reliable information update and low cost.

Inactive Publication Date: 2011-04-20
FUJIAN UNIV OF TECH
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide traffic information service system with a traffic jam identification method based on floating car technology, which overcomes the inability to realize dynamic update of traffic jam information in the prior art

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  • Traffic jam point identification method based on floating car technology
  • Traffic jam point identification method based on floating car technology
  • Traffic jam point identification method based on floating car technology

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Embodiment Construction

[0015] The invention provides dynamic and accurate traffic congestion point information for various traffic information service systems. A traffic jam point identification method based on floating car technology, the method includes the following steps:

[0016] Step 10, using the floating car to regularly collect vehicle number, position, speed and time information during driving, and transmit the collected data to the data center;

[0017] Step 20, the data center performs data filtering preprocessing on the speed information in the data to obtain valid floating car data, and then extracts all ultra-low speed driving data sets;

[0018] Step 30, the data center locates the area formed by the ultra-low speed driving of multiple floating vehicles, and extracts the center position and length of each area, as well as the start time and duration attributes, and forms a set R and stores it in the data center;

[0019] Step 40. The data center performs data mining on the floating ...

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Abstract

The invention provides a traffic jam point identification method based on the floating car technology, which comprises the following steps: regularly acquiring numbers, positions, speeds and time information of vehicles in a driving process by using a floating car, and transmitting the acquired data to a data centre; carrying out data filtering pre-processing on the speed information in the data by the data centre to acquire effective floating car data, and extracting all data sets with ultra low-speed driving; and automatically identifying the traffic jam points by the data centre through inspecting frequent ultra low-speed driving areas of multiple vehicles to realize dynamic updating of the traffic jam point information. The invention provides dynamic and correct traffic jam point information for various traffic information service systems, therefore, the cost of information acquisition channels is low, and the information is reliably updated in time, thus having significant meaning on the various traffic information service systems.

Description

【Technical field】 [0001] The invention belongs to the field of information technology application. Specifically, it relates to a method for identifying traffic jam points in a traffic information service system, so that dynamic traffic jam point information services can be provided for public trips and the like. 【Background technique】 [0002] Floating car technology, also known as "probe car", has been widely used. Its basic principle is: based on the vehicle's position, direction and speed information regularly recorded by the floating car equipped with on-board GPS during its driving process, the application of map Matching, path estimation and other related computing models and algorithms are processed, so that the floating car position data and urban roads are associated in time and space. Which roads are often congested? At what time is there frequent congestion? How congested is it? At present, in public travel and other traffic information service systems, these ...

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Application Information

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IPC IPC(8): G08G1/00G08G1/01G08G1/017
Inventor 王桐森邹复民蒋新华王雷廖律超
Owner FUJIAN UNIV OF TECH
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