On-line traffic bottleneck predictive control method based on field programmable gate array (FPGA) and improved Xue-Dai model

Abstract

The invention discloses an on-line traffic bottleneck control method based on a field programmable gate array (FPGA) and an improved Xue-Dai model and aims to solve the technical problem that existing methods can not perform on-line predictive regulating and controlling for traffic bottlenecks in actual expressways or blocked roads. According to the on-line traffic bottleneck predictive control method, the Xue-Dai model is improved, a variable information display board is integrated into the Xue-Dai model, a whole predictive analysis is performed for the expressways or the blocked roads through the improved Xue-Dai model based on the FPGA platform, the road bottleneck is found out according to defined state variables, then control schemes of junction control and the variable information display board are provided, the control schemes can be taken into prediction models according to priority levels, a reasonable control scheme can be found out, the on-line control for the traffic bottleneck can be achieved, and thereby the traffic bottleneck in the expressways or the blocked roads can be effectively controlled.

Description

technical field [0001] The present invention relates to a FPGA control methods, especially one based on FPGA and improve Xue-Dai Online Traffic Bottleneck Predictive Control Method for Macroscopic Traffic Flow Models. Background technique [0002] Traffic congestion has become the focus of common attention of all countries in the world and an important problem that needs to be solved urgently. The traffic bottleneck problem is one of the most important problems restricting traffic flow. Due to the limitation of hardware facilities or the impact of emergencies, some sections of the road become If the bottleneck is not regulated, it will accelerate the accumulation of traffic in the bottleneck section, worsen the traffic condition, cause congestion, and even lead to the paralysis of the entire transportation network. [0003] At present, there are only two ways of expressway traffic regulation: variable information display boards for speed limit and turn control. In order ...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the technical defect that existing methods are difficult to carry out online prediction and control of traffic bottlenecks in actual expressways or closed roads, the present invention provides a method based on FPGA and improvements Xue-Dai Model online traffic bottleneck control method, the method for Xue-Dai The model is improved, and the variable information display board is integrated into the Xue-Dai model, based on FPGA platform through the improved Xue-Dai The model predicts and analyzes the expressway or closed road as a whole, finds road bottlenecks according to the defined state variables, and then gives control schemes for turn control and variable information display boards, and brings these control schemes into the prediction model according to priority, Finding a reasonable control scheme, so as to carry out online control of traffic bottlenecks, can effectively solve the technical problem that existing schemes are difficult to predict and control traffic bottlenecks online in actual expressways or closed roads

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