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Distinguishing Method of Viaduct Emergencies Based on Microwave Vehicle Detector

A technology for vehicle detectors and emergencies, which is applied to road vehicle traffic control systems, traffic flow detection, instruments, etc., can solve problems such as data loss, road damage, and large interference, and achieve loss reduction, easy installation and maintenance, and The effect of high construction costs

Active Publication Date: 2017-06-20
ANHUI SUN CREATE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, commonly used detection equipment includes video detection, coil detection, and geomagnetic detection, but there are various drawbacks in the actual application of these detection methods
For example, video detection is greatly disturbed by light, coil detection will damage the road surface, geomagnetic detection is affected by wireless communication, and data is often lost, etc.
In addition, for the current development direction of urban traffic that is becoming more and more advanced, simply judging whether the road is in a congested state as above can no longer meet the needs of traffic management. The calculation is faster and more efficient, the response time is shorter, and the accuracy is higher. Gradually become the main theme of elevated road condition calculation

Method used

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  • Distinguishing Method of Viaduct Emergencies Based on Microwave Vehicle Detector
  • Distinguishing Method of Viaduct Emergencies Based on Microwave Vehicle Detector
  • Distinguishing Method of Viaduct Emergencies Based on Microwave Vehicle Detector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] 1) Install and debug microwave vehicle detectors on the selected section of the north-south elevated highway in Hefei;

[0105] 2) Obtain the data measured by the microwave vehicle detector for a certain period of time:

[0106] Lane 1: the number of vehicles of model 1 is 98; the number of vehicles of model 2 is 2; the number of vehicles of model 3 is 0; the number of vehicles of model 4 is 0; the time occupancy rate is 31%.

[0107] Lane 2: the number of vehicles of model 1 is 63; the number of vehicles of model 2 is 0; the number of vehicles of model 3 is 0; the number of vehicles of model 4 is 0; the time occupancy rate is 19%.

[0108] Lane 3: the number of vehicles of model 1 is 76; the number of vehicles of model 2 is 0; the number of vehicles of model 3 is 0; the number of vehicles of model 4 is 0; the time occupancy rate is 23%.

[0109] 3) Calculate the equivalent traffic volume of a single lane:

[0110] Lane 1: Equivalent traffic volume Q L1 =∑Q i E. i ...

Embodiment 2

[0134] 1) Install and debug microwave vehicle detectors on the selected section of the north-south elevated highway in Hefei;

[0135] 2) Obtain the data measured by the microwave vehicle detector for a certain period of time:

[0136] Lane 1: the number of vehicles of model 1 is 150; the number of vehicles of model 2 is 4; the number of vehicles of model 3 is 0; the number of vehicles of model 4 is 0; the time occupancy rate is 71%.

[0137] Lane 2: the number of vehicles of model 1 is 122; the number of vehicles of model 2 is 1; the number of vehicles of model 3 is 0; the number of vehicles of model 4 is 0; the time occupancy rate is 58%.

[0138] Lane 3: the number of vehicles of model 1 is 90; the number of vehicles of model 2 is 0; the number of vehicles of model 3 is 0; the number of vehicles of model 4 is 0; the time occupancy rate is 33%.

[0139] 3) Calculate the equivalent traffic volume of a single lane:

[0140] Lane 1: Equivalent traffic volume Q L1 =∑Q i E. i ...

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Abstract

The invention belongs to the technical field of urban viaduct information acquisition and processing, and particularly relates to a viaduct sudden event discrimination method based on a microwave vehicle detector. The method comprises the following steps that the microwave vehicle detector is installed and debugged; the data of the microwave vehicle detector are obtained; equivalent traffic volume QLj of a single lane is calculated; average density KLj of the single lane is calculated; average density KLj of the single lane is calculated; average driving speed V<-> of a viaduct road segment is calculated; road segment average driving speed Vtp of the tth sampling cycle is predicted; road segment average driving speed standard deviation S of the past four sampling cycles is calculated; a specific value Q of difference of the prediction value and an actual value of road segment average driving speed of the tth sampling cycle to standard deviation is obtained; and traffic sudden event discrimination is performed. Data acquisition responsiveness is faster, the measurement and calculation process is more concise and convenient, the accurate effect of the online measurement and calculation result is higher, viaduct sudden events can be timely and effectively processed and traffic congestion can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of information collection and processing of urban viaducts, and in particular relates to a method for judging emergent incidents of viaducts based on microwave vehicle detectors. Background technique [0002] Viaducts occupy an important position in large and medium-sized urban traffic systems, and are the main arteries of urban traffic. If an emergency occurs on the viaduct, it will cause large-scale traffic congestion and affect the travel of urban residents. Therefore, it is very necessary to distinguish viaduct emergencies. [0003] The traffic information collection of urban roads is the basis for judging emergencies of viaducts. At present, commonly used detection equipment includes video detection, coil detection, and geomagnetic detection, but these detection methods have various disadvantages in practical application. For example, video detection is greatly disturbed by light, coil detection will ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01G08G1/017
Inventor 邹娇董婉丽孙晓静林家骐杨灿彭柱徐戚胡涛李鹏
Owner ANHUI SUN CREATE ELECTRONICS
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