System and method for combined control of highway entrance and exit ramps under the environment of Internet of Vehicles

Abstract

The invention discloses a combined control system and method for expressway entry / exit ramps under a car networking environment. The system is composed of an expressway section layer control system, a ramp node layer control system and a vehicle-mounted control system. The expressway section layer control system is used for obtaining traffic state information of an administered expressway section, and egulating the numbers of released vehicles at the entry / exit ramps to guarantee that a jam does not occur at the ramps and nearby areas. The ramp node layer control system is used for determining priorities of the vehicles at a junction of the entry / exit ramps, and controlling a vehicle merging process. The vehicle-mounted control system sends out a request according to real-time communication with a control system and other vehicles and controls the vehicles to travel according to control instructions. According to the combined control system and method, a relationship frame of all layers of the system, an arrangement structure of a ramp control system and the control method and a control process flow for an expressway section layer and the entry / exit ramps are involved. By adoption of the combined control system and method, development and application of a car networking technology in the aspect of active expressway management and control are facilitated, and meanwhile, and the system and method have major significance for improving the existing ramp entry and exit efficiency and ramp merging safety.

Description

technical field [0001] The present invention relates to the technical field of intelligent traffic management and control, and in particular to a combined control system for highway entrance and exit ramps based on the Internet of Vehicles and a vehicle control method for expressway ramp entrances and exits based on the Internet of Vehicles environment. Background technique [0002] The entrance and exit control technology of the expressway is an important part of the active control technology of the expressway, and the entrance and exit ramp of the expressway is also the bottleneck position with high incidence of expressway congestion. During commuting rush hour or accident time, because the traffic volume entering the expressway from the ramp is greater than the capacity of the expressway, the traffic of a certain section of the expressway is often paralyzed. In order to avoid the above situation, the ramp control signal light is usually used at home and abroad to control ...

AI Technical Summary

Problems solved by technology

However, the main control methods at home and abroad only control vehicles through the on-ramp, and the research on the control of the off-ramp is relatively lacking, and the off-ramp is often easily blocked by vehicles due to poor adjacent roads (auxiliary roads), which affects the operation of the main line of the expressway.

Therefore, when congestion occurs, it is difficult to satisfy the control effect of only considering the entrance control

In addition, the current ramp control lacks a specific vehicle merging control strategy, making the ramp weaving area still an accident-prone place

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