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Intelligent vehicle intersection left-turn phase signal optimization method and device

A phase signal and optimization method technology, which is applied in the control of traffic signals, traffic control systems of road vehicles, traffic flow detection, etc., can solve the rare microcosmic research on the coordination of lane changing and signal control of intelligent vehicles, and ignore the influence of control efficiency, etc. problem, to achieve the effect of improving timing efficiency, safety and efficiency guarantee, and scientific optimization plan

Active Publication Date: 2021-04-06
SOUTHEAST UNIV
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  • Application Information

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Problems solved by technology

Generally speaking, the existing researches tend to focus on the macro control of intelligent vehicle lane change or traffic signal, ignoring the influence of intelligent vehicle lane change behavior on traffic signal control efficiency, and there are few microcosmic studies on the coordination of intelligent vehicle lane change and signal control

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  • Intelligent vehicle intersection left-turn phase signal optimization method and device
  • Intelligent vehicle intersection left-turn phase signal optimization method and device
  • Intelligent vehicle intersection left-turn phase signal optimization method and device

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Such as figure 1 As shown, a method for optimizing the phase signal of a left-turn intelligent vehicle intersection disclosed in the embodiment of the present invention includes the following steps:

[0032] Step 1. Obtain the target vehicle's lane-changing micro-information, current lane real-time and historical delay data. The lane-changing micro-information includes the speed and position data of the target vehicle, the leading vehicle and the following vehicle in the target lane. The target vehicle is a smart car;

[0033] Specifically, the microscopic data of lane change can be obtained automatically through the environment perception system of the smart car, through the intelligent network connection or vehicle-road collaborative contr...

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Abstract

The invention discloses an intelligent vehicle intersection left-turn phase signal optimization method. The method comprises the following steps of step 1, acquiring the lane changing microscopic information of a target vehicle; 2, calculating a lane changing urgency coefficient of the target vehicle; 3, calculating a lane changing gap of the target vehicle based on the lane changing urgency coefficient of the target vehicle; 4, acquiring real-time lane data; 5, deciding whether to immediately change the lane and turn left or not according to the vehicle lane changing gap calculated in the step 3; 6, after the target vehicle changes the lane and turns left, the vehicle emptying time before the current straight lane parking line, namely the time when the last vehicle passes through the intersection before the parking line, being calculated; 7, the vehicle emptying time before the opposite straight lane parking line being calculated; 8, calculating the surplus time of the straight-going phase green light; and 9, optimizing a left-turn phase timing scheme according to the straight-going phase green light surplus time calculated in the step 8. According to the method, intersection signal timing efficiency is improved, and a guarantee is provided for road intersection safety and efficiency.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic control, in particular to a method and device for optimizing a left-turn phase signal at an intelligent vehicle intersection. Background technique [0002] With the rapid development of vehicle-road coordination technology, conventional vehicles have gradually been equipped with smart devices, roadside devices will interact with intelligent networked vehicles in real time, and adaptive traffic control will be implemented. Under the strategic background of "Traffic Power", Internet of Things companies cooperate with car companies to continuously update and iterate. Vehicles communicate with roadside terminals in real time through vehicle-mounted terminals and coordinate schemes to effectively improve the safety and traffic efficiency of road intersections. [0003] When smart cars change lanes laterally, safety factors are fully considered, and the requirements for lane-changing clearan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/08G08G1/01
CPCG08G1/0125G08G1/08
Inventor 董长印王昊王雷震刘晓瀚巴贝尔卢云雪李昌泽阮天承刘雍翡陈全彭显玥
Owner SOUTHEAST UNIV
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