Urban traffic jam distinguishing method based on RFID technology

A technology of urban traffic and discrimination method, applied in the field of traffic information, can solve the problem of low accuracy of vehicle detector data quality discrimination, and achieve the effect of fast computing speed, large amount of information, and low computing overhead

Active Publication Date: 2013-12-25
重庆科知源科技有限公司
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Problems solved by technology

[0004] Existing urban traffic congestion discrimination methods mostly use traffic flow, occupancy rate, speed, etc. as their discrimination parameters. These methods have high requirements for the data quality of vehicle detectors and the discrimination accuracy is not high

Method used

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  • Urban traffic jam distinguishing method based on RFID technology
  • Urban traffic jam distinguishing method based on RFID technology
  • Urban traffic jam distinguishing method based on RFID technology

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] see figure 1 , an urban traffic jam discrimination method based on RFID technology, comprising the following steps:

[0029] 1) The physical quantity of the nature of traffic flow is generally described and reflected by traffic parameters, and the change in the value of traffic parameters can reflect the change in the nature of traffic flow. At present, the acquisition of traffic parameters is mainly based on the application of fixed acquisition technology. In this embodiment, by installing an RFID tag on each vehicle and an RFID reader at a crossing, when the vehicle travels through the RFID reader at the crossing, the RFID reader reads the data of the RFID tag to obtain driving information such as time and license plate number;

[0030] 2) Set the statistical time interval as T, match the driving information obtained by the two RFID readers, and obtain the...

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Abstract

The invention relates to the technical field of traffic information and provides an urban traffic jam distinguishing method based on an RFID technology. The urban traffic jam distinguishing method comprises the steps of reading data of RFID tags installed on passing automobiles through RFID readers arranged at urban intersections, and obtaining driving information; setting a statistics time interval as T, performing matching on the driving information obtained through two RFID readers, and obtaining the number of automobiles passing through a road segment between the two RFID readers within the T time period and the driving information; performing data preprocessing to remove abnormal data; calculating the stroke speed and the average stroke speed of every automobile; obtaining a traffic flow state characteristic value; and distinguishing traffic jams according to the traffic flow state characteristic value D. Compared with other jam distinguishing methods, the urban traffic jam distinguishing method is simple in algorithm, small in operation spending, quick in operating speed and low in achieving difficulty, and more accurate judgment results can be obtained.

Description

technical field [0001] The invention relates to the technical field of traffic information, in particular to a method for judging urban traffic jams. Background technique [0002] The problem of traffic congestion is becoming more and more serious, which not only brings environmental pollution, but also causes economic losses. Therefore, it is necessary to study the identification method of traffic congestion, distinguish the state of traffic operation in a timely and accurate manner, take reasonable measures for traffic congestion, and reduce traffic congestion through scientific and reasonable road traffic management methods. [0003] Road traffic parameters are the basis for judging traffic congestion status. At present, vehicle speed, traffic volume and occupancy rate are the three most commonly used traffic parameters for evaluating traffic status. The detection methods include ground sensing detection, microwave detection, floating vehicle detection, technologies such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01
Inventor 孙棣华赵敏刘卫宁郑林江韩坤林
Owner 重庆科知源科技有限公司
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