Method of judging level of traffic jam according to taxi running conditions

A technology for information discrimination and traffic congestion, applied in the direction of traffic flow detection, etc., can solve the problems of affecting the accuracy rate, large measurement error of the number of detected satellites, etc., and achieve the effect of credible results.

Inactive Publication Date: 2015-05-13
JILIN UNIV
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Problems solved by technology

However, because the GPS system may have relatively large measurement errors in some specific occasions (such as rainy days, urban building influence or insufficient number of detection satellites), which will affect the accuracy of discrimination, so the algorithm has certain limitations. sex

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  • Method of judging level of traffic jam according to taxi running conditions
  • Method of judging level of traffic jam according to taxi running conditions
  • Method of judging level of traffic jam according to taxi running conditions

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Embodiment Construction

[0038] Include the following steps:

[0039] (1) Calculate the average travel speed of a taxi:

[0040] (A) When the speed information V is collected t, it is necessary to judge whether it is in a new road section, and if it is in a new road section, it is necessary to initialize the N value and V sum , N=0, V sum =0; N is the number of valid speed values, V sum is the sum of the driving speed from the moment of entering the new road segment to the present moment;

[0041] (B) The total speed value V of this section sum accumulative;

[0042] (C) Call the invalid data elimination algorithm to calculate the N value, including:

[0043] Use the information transmitted by the CAN bus: the status of the door and window switch, OBD fault diagnosis information, combined with the image processing method, to eliminate the invalid data points caused by the driving characteristics of the taxi, and calculate the average travel speed of the taxi;

[0044] (1) Obtain the vehicle spe...

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Abstract

The invention relates to a method of judging the level of traffic jam according to taxi running conditions and belongs to a method of judging traffic jam conditions. The method includes: preprocessing traffic-ahead image information acquired by a vehicular camera and vehicle condition data acquired by an automobile sensor, eliminating invalid data points, calculating average speed in the current period according to real-time speed on a CAN bus, and judging the traffic jam condition according to the average speed. The method has the advantages that the defect of dependence on the GPS system is eliminated; the image processing method is utilized, so that judgment is more accurate; the method has promising application prospect.

Description

technical field [0001] The invention belongs to a method for judging traffic congestion, in particular to a method for judging traffic congestion based on the driving state of a taxi, a comprehensive image processing method and information transmitted by a CAN bus on the vehicle. Background technique [0002] With the rapid development of the current social economy and the improvement of urban people's living standards, the population and the number of motor vehicles have also increased significantly, and urban traffic construction and management have also achieved great development. However, as the demand for urban road traffic continues to increase faster than the speed of planning and construction of traffic facilities, traffic congestion has become a serious problem in many cities, threatening the lives and property of urban people at all times. [0003] According to a study by the Texas Transportation Institute in the United States, the average travel delay per traveler...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01
Inventor 董劲男秦俊秦贵和陈虹任鹏飞孙丹郑啸天陆帅冰孙丽娜郭悦
Owner JILIN UNIV
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