Method for detecting road traffic incident based on double-section annular coil detector

A loop coil and event detection technology, which is applied in the traffic control system of road vehicles, traffic flow detection, traffic control system, etc., can solve problems that are difficult to apply and limit theoretical research

Active Publication Date: 2012-07-18
ZHEJIANG UNIV
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Problems solved by technology

The use of advanced algorithms has greatly improved the efficiency of traffic incident detection. However, most of these algorithms need to use a large amount of ...

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  • Method for detecting road traffic incident based on double-section annular coil detector
  • Method for detecting road traffic incident based on double-section annular coil detector
  • Method for detecting road traffic incident based on double-section annular coil detector

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Embodiment Construction

[0094] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0095] refer to figure 1 , which illustrates the process flow of the double-section road traffic incident detection method.

[0096] Step 1, refer to figure 2 , which illustrates the flow chart of obtaining traffic flow parameters. Which reference image 3 , which illustrates the layout scheme of the loop coil detector of the double-section road traffic incident detection method, which is characterized in that a loop coil detector with a specification of 2 × 2m is used to count the traffic flow operation at the detection section on the road. Set a detection section every 500-800m on the road section that needs to be detected, and each detection section is equipped with a group of loop coil detectors, and each group of loop coil detectors includes two loop coil detectors separated by a certain distance on each lane . where the first loop detector along the direc...

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Abstract

The invention discloses a method for detecting a road traffic incident based on a double-section annular coil detector. The conventional method is focused on traffic parameter analysis and is used for judging a traffic incident by setting corresponding thresholds. The method for detecting the road traffic incident based on the double-section annular coil detector comprises the follows: a step of obtaining traffic flow data in each sampling interval; a step of calculating relative change rate and evaluation standard deviation of traffic flow parameters between two adjacent detection section based on the pre-treated traffic flow parameters; a step of calculating a judging index of a double-section road traffic incident based on the calculated relative change rate and the evaluation standard deviation; and a step of determining whether the traffic incident occurs based on the judging index of the double-section road traffic incident. The method for detecting the road traffic incident based on the double-section annular coil detector, disclosed by the invention, can lighten the influence of fluctuation of traffic flow parameter of single detection section to detection result and improve detection accuracy.

Description

technical field [0001] The invention relates to the field of traffic event detection, in particular to a road traffic event detection method based on a double-section loop coil detector. Background technique [0002] With the rapid development of expressways in our country, expressway traffic incidents occur frequently, especially the frequent traffic congestion and occasional traffic congestion of urban expressways. If they cannot be dealt with in time, it may cause a series of secondary accidents and environmental pollution. and energy waste and other serious problems. It is urgent to develop a road traffic incident detection algorithm that is easy to implement in engineering. [0003] Among the existing road traffic incident detection algorithms, they can generally be divided into single-section methods based on traffic flow information of a single section, and double-section algorithms based on traffic flow information of adjacent sections. Typical single-section algor...

Claims

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Application Information

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IPC IPC(8): G08G1/01G08G1/042
Inventor 王殿海赵伟明金盛孙锋祁宏生马东方徐天东马晓龙周旦韦薇
Owner ZHEJIANG UNIV
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