Road traffic stream data integration method and device based on signal processing

A road traffic and signal processing technology, applied in the field of road traffic flow data processing, can solve the problems of being unable to distinguish what information is included or discarded in the sequence, and not fully considering different data requirements, so as to improve integration efficiency, save computing time, The effect of improving efficiency and accuracy

Inactive Publication Date: 2005-03-30
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0008] The method of mathematical statistics is designed based on the analysis of the rate of change of the data sequence, and its application process is intuitive and easy to use; however, the integrated data sequence it calculates contains a lot of useless information (such as: errors and noise), which makes it impossible to distinguish What information is included or discarded in the integrated sequence; the calculated result is only the only optimal integration degree based on the characteristics of the data itself, and does not fully consider the different needs of different users for data

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  • Road traffic stream data integration method and device based on signal processing
  • Road traffic stream data integration method and device based on signal processing
  • Road traffic stream data integration method and device based on signal processing

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[0056] A road traffic flow data integration device based on signal processing according to the method of the present invention, its structure or flow is shown in Figure 12(a), the original data is input into the data integration device, and the data integration device receives the information of the user terminal and user demand information and outputs Best integrated data and degree of integration.

[0057] The detailed diagram of the data integration device in Figure 12(b) can be obtained by expanding the data integration device in Figure 12(a). The data integration device in this framework is mainly composed of five parts: the original data reading device, the left limit determination device of the integration degree, the right limit determination device of the integration degree, the optimal integration degree judgment device and the integrated data output device. The original data is read into the original data read-in device, and the original data read-in device sets dat...

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Abstract

In transmission process, mass traffic flow data passing through processes of signal detection, transmission, modulation and demodulation reaches to traffic management center. Thus, noise is included in data of signal. Wavelet technique is applied to integration of traffic flow data in order to eliminate noise, raise accuracy of data, and analyze a specific frequency component. The disclosed method is capable of processing mass data quickly, and calculating efficiency is much higher than traditional integration method of mathematical statistics. Features are: saving calculation time, raising integrated efficiency and accuracy, meeting requirement of traffic in present and in future.

Description

technical field [0001] The present invention relates to a processing method of road traffic flow data, more specifically, to a method and device for integrating road traffic flow data based on signal processing, which can greatly improve the efficiency and accuracy of data integration while removing noise. Background technique [0002] Raw road traffic flow data can not only be used directly for real-time traffic control (including signal timing, accident prediction, etc.), but also to meet potential application requirements such as traffic planning. Effective data integration of original information, extraction of useful information, and data compression can better meet the needs of different users. For example: transforming short-time interval traffic data into long-time interval data can meet the needs of planning users; or according to the importance of multiple traffic variables to users, the weighted average of traffic variables can be selected to obtain the best solut...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/00G06F17/10
Inventor 于雷乔凤祥刘梦涵
Owner BEIJING JIAOTONG UNIV
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