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A traffic state recognition method at intersections based on floating car data

A technology of floating car data and traffic status, applied in traffic flow detection and other directions, can solve problems such as misjudgment and large amount of calculation, and achieve the effect of no delay and high accuracy

Active Publication Date: 2011-12-14
NANJING LES INFORMATION TECH
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  • Summary
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Problems solved by technology

[0010] However, the existing commonly used scheme needs to calculate all road sections and all floating car data, which requires a large amount of calculation, and the increase of floating car data brings certain risks to the system expansion; The speed is greatly affected by traffic lights, that is, when the light is red, the speed decreases or even reaches 0 km / h, so it may cause misjudgment

Method used

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  • A traffic state recognition method at intersections based on floating car data
  • A traffic state recognition method at intersections based on floating car data
  • A traffic state recognition method at intersections based on floating car data

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should understand that following specific embodiment is only for illustrating the present invention and is not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand the present invention Modifications in various equivalent forms fall within the scope defined by the appended claims of the present application.

[0032] Please combine figure 1 and figure 2 As shown, the present invention provides a kind of intersection traffic state recognition method based on floating car data, and this method comprises the following steps:

[0033] (1), make the grid data of each direction of road crossing, the attribute data of described grid comprises crossing number, direction number and attention sign, and described crossing number represents the unique number of this crossing, and describ...

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Abstract

The present invention discloses a crossing traffic state recognition method based on floating car data. By introducing the duration of the control period of a crossing traffic signal, the factor that the floating car data is affected by a crossing signal lamp is considered when a traffic recognition is carried out; fast match of a detected area is realized by utilizing a GIS grid, and the crossing traffic state is sensed realtimely. Therefore, the crossing traffic state recognition method based on floating car data can realtimely sensor the traffic state, with no delay, and the recognition accuracy is high.

Description

technical field [0001] The invention relates to a traffic state identification method, in particular to an intersection traffic state identification method based on floating car data. Background technique [0002] As a new source of traffic information, floating car data (FCD) can use the vehicle GPS positioning system to collect vehicle positioning information, and at the same time transmit the positioning information to the information processing center through the wireless communication system. The advanced computing model and algorithm analyze and process the data in real time, so as to obtain the real-time situation of the city's traffic conditions. Compared with fixed-point acquisition methods such as traditional road detection technology and video surveillance technology, floating vehicles have the advantages of low cost, easy installation, easy maintenance, wide measurement range, real-time and dynamic performance. Therefore, traffic information collection and proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01
Inventor 周传龙金绍林
Owner NANJING LES INFORMATION TECH
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