Real-time traffic evaluation method based on multisource information fusion

A multi-source information fusion and real-time traffic technology, applied in the field of information fusion/traffic evaluation, can solve problems such as errors, lack of handling of vehicle and road network emergencies, and reduced evaluation accuracy

Active Publication Date: 2017-10-13
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0005] Existing vehicle behavior evaluation and road network status evaluation often use external sensors to judge the stability and comfort of vehicles and the congestion status of road sections. However, this ind

Method used

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  • Real-time traffic evaluation method based on multisource information fusion
  • Real-time traffic evaluation method based on multisource information fusion
  • Real-time traffic evaluation method based on multisource information fusion

Examples

Experimental program
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Effect test

Embodiment Construction

[0052] (1) Vehicle state diagnosis and analysis method based on multi-type data

[0053] This method effectively utilizes various vehicle internal and external sensor data, and uses history and other vehicle data near the positioning point to correct and compensate the analysis results, with high accuracy. The function of the method is shown as figure 1 shown.

[0054] Step 1: OBD data collection:

[0055] Vehicles produced after 2008 are basically equipped with an on-board diagnostic system interface, which is used by 4S shops to repair and troubleshoot vehicles, but it also allows car owners to use this interface to read vehicle status. This protocol is based on the CAN2.0B standard. Connect the interface with the acquisition device, and read the OBD original information continuously sent out in the form of CAN extended frames.

[0056] Step 2: OBD data filtering:

[0057] For possible communication failures and abnormalities, the collected data is cleaned, and abnormal ...

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Abstract

The invention provides a real-time traffic evaluation method based on multisource information fusion under the scene of vehicle-road cooperation. Firstly multiple operator pairs are introduced to conventional fuzzy integration to form a secondary evaluation model, the weight vector of the traffic evaluation index is determined through the analytical hierarchy process, and variable membership rules suitable for all levels of road parameters are established; meanwhile, the dynamic vehicle data and the static road parameters in a vehicle-road cooperative system are fused so s to calculate the real-time evaluation result and score. According to the method, various traffic evaluation indexes can be accepted to act as the input quantity of the model through the fuzzy relationship, the subjective component of the evaluation method can be reduced by using the weight divided by the scientific method with the help of the variable membership rules suitable for all levels of roads, and the generated evaluation score can be applied to traffic state comparison of different roads of the same time period or different time periods of the same road so that the reliable basis can be provided for traffic signal control, vehicle scheduling management and the navigation information service.

Description

technical field [0001] The invention belongs to the field of information fusion / traffic evaluation. Background technique [0002] The increasingly prominent problem of traffic congestion seriously restricts the development of cities. Since the urban road network is often in an oversaturated state during morning and evening peak hours, the inconvenience of motor vehicle travel has become a major problem that plagues residents' lives. However, research results have shown that the current traffic capacity of the urban road network still has great potential for improvement. In addition to unreasonable road planning and signal light timing, traffic control departments and drivers lack understanding of the real-time situation of the regional road network. One of the main reasons for inefficient utilization. If real-time traffic conditions and emergencies can be accurately detected to induce traffic flow, the operational efficiency of the road network can be improved. However, man...

Claims

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Application Information

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IPC IPC(8): G08G1/01
CPCG08G1/0133
Inventor 王庞伟于洪斌王力蒋依伦孟芳芳
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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