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Method for fusing traffic flow data in real time and device

A technology of real-time traffic and fusion methods, applied in the field of intelligent transportation, can solve the problem of reduced accuracy of road conditions and achieve the effect of improving accuracy

Active Publication Date: 2012-06-27
CENNAVI TECH
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Problems solved by technology

[0004] However, the inventors have found that the existing technology processes various traffic flow data separately, and then selects the road condition information obtained from one of the traffic flow data as the current road condition of the road. If the selected traffic flow data occurs abnormal, it will lead to a decrease in the accuracy of road conditions derived from this type of traffic flow data

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  • Method for fusing traffic flow data in real time and device
  • Method for fusing traffic flow data in real time and device
  • Method for fusing traffic flow data in real time and device

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Embodiment 1

[0029] Such as figure 1 The illustrated embodiment provides a real-time traffic flow data fusion method, which specifically includes the following steps:

[0030] 101. According to each of the at least two types of real-time traffic flow data, sequentially calculate and obtain the road condition S and running speed V corresponding to each type of real-time traffic flow data.

[0031] In practical application, when acquiring the real-time traffic flow data, at least two kinds of real-time traffic flow data used for fusion may be aggregated within a certain period of time. Because the selection of the time period is related to the release frequency of real-time traffic flow data. If the time period is selected to be short, the amount of real-time traffic flow data obtained will be limited, and the probability of data extreme values ​​will increase. If the time period is selected to be too long, it will affect the release of traffic flow information, such as not being able to T...

Embodiment 2

[0091] Such as Figure 4 As shown, the embodiment of the present invention provides a real-time traffic flow data fusion device, including: a first processing unit 11 , a second processing unit 12 , a determination unit 13 , a state fusion unit 14 and a speed fusion unit 15 .

[0092] Wherein, the first processing unit 11 is used to sequentially calculate the corresponding road condition S and operating conditions of the road under each of the real-time traffic flow data according to each of the at least two kinds of real-time traffic flow data. speed V;

[0093] The second processing unit 12 is used to sequentially determine the degree of trust corresponding to each type of real-time traffic flow data;

[0094] The determination unit 13 is used to determine the degree of confidence of the road under various road conditions;

[0095] The state fusion unit 14 is used to adopt the road condition state S with the highest degree of trust as the road condition when the difference...

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Abstract

The invention discloses a method for fusing traffic flow data in real time and a device, which relates to the technical field of intelligent transportation systems, and improves the accuracy of road condition information of roads. The method comprises the following steps: determining the confidence level of the roads in various of road conditions states; when the difference of the confidence level of the road condition states with the highest confidence and the confidence level of the road condition states with the secondary high confidence level is not smaller than a preset threshold, adopting a road condition state S with the highest confidence level as the current road condition state of the road, and working out the current running speed of the road according to a running speed V corresponding to the road under the road condition state S with the highest confidence level; and otherwise, recomputating the current running speed of the road according to the running speed V corresponding to the road under each type of real-time traffic flow data, and determining the current road condition state of the road according to the current running speed. The embodiment of the invention is mainly applied to the process of fusing real-time traffic flow data.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a real-time traffic flow data fusion method and device. Background technique [0002] The intelligent transportation system can provide users with real-time traffic information on the road by using technologies such as computers, communications, artificial intelligence, and sensors. Users can know the current traffic conditions of each road section at any time through GPS / GIS, broadcasting, information release boards and other means during driving. The traffic management department can know the traffic conditions of each road section at any time through vehicle sensors, video cameras and other equipment on the road. And at any time to adjust the traffic signals of each traffic intersection and release information to the outside world. [0003] At present, the existing technology mainly obtains the road traffic conditions by separately processing various traffi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01G08G1/042G08G1/052
CPCG08G1/0145G08G1/02
Inventor 夏伟魏俊华胡健
Owner CENNAVI TECH
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