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A method and device for optimizing the left-turn phase signal at an intelligent vehicle intersection

A technology of phase signal and optimization method, which is applied in traffic signal control, traffic control system of road vehicles, traffic flow detection, etc. It can solve the problems of 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 assisting the driver or intelligent vehicle decision-making

Active Publication Date: 2021-09-28
SOUTHEAST UNIV
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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

Method used

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  • A method and device for optimizing the left-turn phase signal at an intelligent vehicle intersection
  • A method and device for optimizing the left-turn phase signal at an intelligent vehicle intersection
  • A method and device for optimizing the left-turn phase signal at an intelligent vehicle intersection

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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 a method for optimizing a left-turn phase signal at an intersection of intelligent vehicles, which comprises the following steps: Step 1, obtaining the lane-changing micro information of the target vehicle; Step 2, calculating the lane-changing urgency coefficient of the target vehicle; Step 3, based on the target The vehicle lane change urgency coefficient, calculate the target vehicle lane change gap; step 4, obtain the real-time data of the lane; step 5, decide whether to change lane immediately and turn left according to the vehicle lane change gap calculated in step 3; step 6, the target vehicle change lane left After the turn, calculate the clearing time of the vehicle before the stop line of the current through lane, that is, the time when the last vehicle passes the intersection before the stop line, step 7, calculate the clearing time of the vehicle before the stop line of the opposite straight lane; step 8, calculate the green light of the straight phase Surplus time; step 9, optimize the left-turn phase timing scheme according to the surplus time of the green light in the straight-going phase calculated in step 8. The invention improves the signal timing efficiency of the intersection, and provides guarantee for the safety and efficiency of the road intersection.

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 Patents(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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