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Method for acquiring running position and speed of vehicle at traffic intersection under electronic license plate environment and retrograde running detection method

A technology of electronic license plates and traffic intersections, which is applied in the field of traffic engineering, can solve problems such as not being applicable to various weathers, and achieve the effect of strong applicability

Inactive Publication Date: 2019-03-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the problem that the image acquisition equipment corresponding to the control data required by the existing traffic intersection self-adaptive control method cannot be applied to various weathers

Method used

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  • Method for acquiring running position and speed of vehicle at traffic intersection under electronic license plate environment and retrograde running detection method
  • Method for acquiring running position and speed of vehicle at traffic intersection under electronic license plate environment and retrograde running detection method
  • Method for acquiring running position and speed of vehicle at traffic intersection under electronic license plate environment and retrograde running detection method

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specific Embodiment approach 1

[0035] The method for obtaining the running position and speed of vehicles at traffic intersections under the electronic license plate environment is realized based on an electronic license plate information detection system. The electronic license plate information detection system includes a gantry with a height of h, at least two card readers, and a electronic tags on vehicles. The electronic tag is preferably placed in front of the windshield of the vehicle for easy identification by the card reader. The gantry is set at the traffic intersection of the road, and the card readers are respectively set on the gantry. The distance between each card reader is l, and each card reader is facing the road in the direction of the vehicle, forming a depression angle θ with the ground .

[0036] The working process of the above system is as follows: when the vehicle passes through the section where the card reader is installed, the card reader emits ultra-high frequency electromagnet...

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Abstract

The invention discloses a method for acquiring the running position and speed of a vehicle at a traffic intersection under an electronic license plate environment and a retrograde running detection method, and belongs to the field of traffic engineering. In order to solve the problem that image acquisition equipment corresponding to control data required for an existing traffic intersection self-adaption control method cannot be applied to various weathers, the methods are implemented based on at least two card readers arranged on a gantry at the traffic intersection of a road. Firstly, a ground detection coordinate system is established, and position coordinates of the card readers are determined; secondly, the card readers send and receive electromagnetic waves to acquire electronic taginformation, a spatial position relationship between the two card readers and an electronic tag is constructed, and the position coordinates of a point V where the electronic tag is located are obtained based on the position relationship. The methods are suitable for data acquisition of self-adaption control over the traffic intersection.

Description

technical field [0001] The invention belongs to the field of traffic engineering, and in particular relates to a data collection method required for traffic crossing control. Background technique [0002] At present, the passage and release of vehicles at traffic intersections are based on traffic light control with a fixed duration; or, pedestrians manually press the green light button and wait for a certain period of time before the green light turns on. This method is used to control traffic intersections. This method has the problem of poor control adaptability. For example, some traffic intersections with horizontal and vertical intersections have less traffic flow in one direction, but more traffic flow in the intersecting direction. This method also follows the fixed-time traffic lights. Changes or changes in the traffic lights of manual buttons will seriously affect the traffic efficiency, and even seriously affect the traffic, causing congestion. [0003] At presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/017G08G1/052G08G1/056G08G1/08
CPCG08G1/017G08G1/052G08G1/056G08G1/08
Inventor 蒋贤才谢志云
Owner HARBIN INST OF TECH