Entrance ring road self-adaptive control system and method

Abstract

The invention provides an entrance ring road self-adaptive control system and a method, which belong to the technical field of intelligent traffic signal system control. The system of the invention comprises traffic detection equipment, traffic control equipment and a communication module, wherein the traffic detection equipment comprises a queuing detector, an upstream detector, a downstream detector and an abouchement detector, and is used for detecting and collection traffic flow data, the traffic control equipment comprises a ring road controller and an entrance ring road signal lamp, and is responsible for controlling the entrance ring road traffic flow rate, and the communication module is used for communication. The system and the method of the invention can response to the traffic flow rate change on a high-speed road, and can automatically select different control methods according to the vehicle flow rate at major trunk roads and at entrance ring road parts. In addition, the hardware of the ring road controller adopted by the invention is simple and is easy to be realized, the development cost is low, and the application range is wide.

Description

technical field [0001] The invention relates to a signal control method of an urban expressway entrance ramp system, belonging to the technical field of intelligent traffic signal system control. Background technique [0002] Urban Expressway (Urban Expressway) refers to a road located in a city that is suitable for the rapid passage of motor vehicles. It has the characteristics of shorter ramp spacing than inter-urban expressways, only motor vehicles are allowed, and the vehicle speed is high. In addition, there are no intersections throughout the urban expressway, and it is connected to the urban surface road by an interchange or an entrance and exit ramp. With the continuous expansion of urban traffic congestion, urban expressway traffic control is becoming more and more important. Urban expressway traffic control mainly includes on-ramp control, main line control and channel control, among which on-ramp control is the most widely used and effective control form. The pr...

AI Technical Summary

Problems solved by technology

Among them, the timing control method is to use fixed timing to control the entrance ramp, and calculate the fixed ramp adjustment rate according to historical traffic data. The timing control is stable, but it cannot adapt to the real-time changing traffic flow, and the operation effect is not very good.

Although induction control can detect traffic flow data in real time, it can easily cause a large amount of traffic on the entrance ramp to enter the main road, causing traffic congestion on the main road. Therefore, induction control is suitable for use when the traffic flow on the main road is small.

In addition to timing control and induction control, there are other on-ramp traffic control methods, but each method has its own applicable conditions, and it is difficult to meet the traffic control requirements of on-ramp

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