Method for processing RFID (Radio Frequency Identification) traffic data
A technology of traffic data and passing vehicle data, applied in traffic control systems, traffic control systems of road vehicles, wireless communication, etc., can solve the problems of obvious quality difference, poor accuracy of license plate information, general data quality, etc., and achieve excellent data quality , High stability effect
Active Publication Date: 2014-08-20
NANJING INTELLIGENT TRANSPORTATION SYST
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Problems solved by technology
[0004] 1. The data type is relatively single;
[0005] 2. The data quality is average, and the quality is significantly different under the influence of weather and other natural environments;
[0006] 3. Unable to recognize or recognize the specific information of the license plate with poor accuracy;
[0007] 4. The application scenarios are narrow, and the resulting economic benefits are low;
Method used
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[0036] 1. The establishment of the road network structure model is used to describe the network topology, that is, the structure of the spatial relationship between geographical elements.
[0037] The present invention combines traffic network flow theory and uses node and base station pair to express traffic network. Combined with the characteristics of RFID base station layout, such as figure 1 , is an intersection, and RFID base stations are respectively arranged on the two-way lanes in the four directions of the intersection, and the present invention regards one base station as a node to draw the road network structure. like figure 2 , where the numbered black dots (such as: 1, 2) represent base station nodes, and the dotted lines represent base station pairs that can be matched. Take the adjacency list model ( image 3 ) as a basis, regard an RFID base station as a node, each node forms a base station table; take two RFID base stations as a base station pair, determi...
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The invention discloses a method for processing RFID traffic data, which includes setting up RFID base stations that can cover each main road in the city, and pasting RFID environmental protection electronic cards for passing vehicles. The steps of the method are: based on the adjacency list model, RFID base stations are nodes, and two RFID base stations are base station pairs. The road network structure model is formed by nodes and base station pairs; each RFID base station collects the information of each passing vehicle to form real-time passing data and cache it into the memory database. Car data is matched, and abnormal processing and timing statistics are performed on the matching results, real-time traffic parameters are generated, and the results are stored in the data warehouse. The invention realizes the processing of the RFID passing data through road network modeling, and then obtains accurate traffic parameters, and provides a solid foundation for subsequent precise traffic management.
Description
technical field [0001] The invention belongs to the technical field of intelligent traffic road network modeling, and in particular relates to a method for modeling based on RFID base station layout and calculating and processing collected RFID traffic data. Background technique [0002] With the rapid development of society and economy, the number of motor vehicles has increased rapidly, the contradiction between urban road supply and traffic demand has become increasingly prominent, and traffic congestion has become increasingly serious, resulting in longer driving time, aggravated environmental pollution, more traffic accidents, and the decline of the overall function of the city. Traditional traffic management means and methods are unsustainable. Only by using information technology can real-time information on road conditions be obtained and released in a timely manner, and dynamic traffic signal control can be carried out based on traffic flow, vehicle speed and other i...
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IPC IPC(8): G08G1/00H04W84/18
Inventor 张梁俊袁高峰郭栋朱琦
Owner NANJING INTELLIGENT TRANSPORTATION SYST