Method for generating real-time traffic information

Abstract

The invention discloses a method for generating real-time traffic information, and belongs to the field of intelligent traffic. The method includes that Socket connection between a GPS (global positioning system) receiving system and a FCD (floating car data) processing system of a floating car is created; a GPS data buffer is set; received GPS data are inserted into the GPS data buffer by the GPS receiving system in real time; and the GPS data are extracted from the GPS data buffer to be subjected to FCD processing by the FCD processing system so as to generate the real-time traffic information. The method has the advantages that a novel processing architecture is proposed, the GPS data buffer is created according to a manufacturer/consumer model, GPS data receiving buffer and the FCD processing can be operated synchronously, computation resources are effectively utilized, and issuing timeliness of the real-time traffic information is improved; and the latest map matching and path speculation results are buffered in the FCD processing system, and accordingly computation and issuing cycles of the real-time traffic information can be dynamically adjusted.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method for generating real-time traffic information. Background technique [0002] In the field of intelligent transportation, real-time dynamic traffic information services can provide efficient and feasible traffic guidance and travel planning information for public travel, transportation, etc., so as to save time, reduce costs, and low-carbon environmental protection. Floating Car Data (FCD) technology is one of the technical means to obtain real-time road traffic information in the intelligent transportation system. It uses positioning technology, wireless communication technology and information processing technology to realize the collection of traffic parameters such as GPS position information, instantaneous driving speed and direction of vehicles on the road, and combines the urban road network data to map the collected traffic parameters. , path estimation,...

AI Technical Summary

Problems solved by technology

This leads to a large delay in the release of real-time traffic information, reducing the effectiveness of real-time traffic information

[0009] Second, the GPS receiving system and the FCD processing system exchange data through GPS text, because the generation and judgment of GPS text and data reading have a certain delay, resulting in low data exchange efficiency

[0010] third, in figure 2 In this case, from the (i-1)*5th minute to the i*5-1th minute, the FCD processing process is in the state of waiting for the GPS text to be generated, the utilization rate of system computing resources is not high, and the computing efficiency is not high

[0012] First of all, exchanging data through text is inefficient; if you want to obtain a shorter calculation cycle, you will generate a lot of GPS text, and the delay in text generation and judgment will be large;

[0013] Secondly, the adjustment of the calculation period requires the linkage between the GPS receiving system and the FCD processing system, which is not flexible enough;

[0014] Finally, the FCD processing system always waits for GPS data for some time, which is computationally inefficient

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