Novel control system and novel control method for sensing and controlling road intersection group signals

Abstract

The invention discloses a novel control system and a novel control method for sensing and controlling road intersection group signals. Through constructing a method containing four steps of 360-DEG intersection panorama video real time monitoring and modeling, intersection assessment index and online simulation analysis, supersaturated intersection key path and control strategy optimization and intersection signal control optimization and panorama video acquisition robot linkage command and establishing an intelligent city traffic control robot based on an intersection group, a city road supersaturated intersection single-point operation optimization problem is solved, an intelligent command city road intersection, supersaturated intersection and supersaturated intersection group traffic control and optimization scheme is formed, moreover, the intelligent city traffic control robot based on the intersection group is employed, linkage between a panorama video acquisition robot and a traffic signals controller is realized, traffic efficiency and the service level of intersection single-point control are improved, so operation efficiency of a city traffic system is greatly improved, and city traffic jams are alleviated.

Description

technical field [0001] The invention relates to the technical field of traffic control, in particular to a novel perception and control road intersection group signal control system and control method. Background technique [0002] Intersection group refers to the collection of several intersections in the urban road network that are geographically adjacent and have strong correlations. They have a significant impact on the traffic operation status of the road network and are the core nodes and keys of urban traffic congestion and traffic safety. The existence of intersection groups in the urban road network is divided into intersections in the city center area, intersections at both ends of tunnels in the city, intersections adjacent to overpasses, intersections between highway entrance and exit ramps and urban roads and streets, and urban expressways. Signals at exits and exits control intersections, etc. The intersection group constitutes the key traffic area of ​​the ur...

AI Technical Summary

Problems solved by technology

[0015] ① The coordinated control range of intersection groups fails to reflect the real-time dynamic changes of their traffic relevance; the existing research in the prior art has realized that the correlation characteristics of intersection groups are not only affected by the distance between intersections, but also related to the distribution characteristics of traffic flow, signal related to the traffic operation characteristics of intersection groups such as control schemes

In actual engineering operation, the scope of intersection group and traffic coordination control is dynamically changing, while the traditional method of determining the range of intersection group is not intelligent enough, only statically divided according to historical data, and does not consider the topology of the road network It is necessary to re-understand the correlation characteristics of intersection groups and the judgment of the range of intersection groups

[0016] ② It is difficult to identify the oversaturated state of the intersection group:

[0019] Carrying out signal coordination control on the intersection group as a whole has gained the recognition and attention of scholars, but the existing traffic control strategies usually focus on global optimization or key intersection regulation, and the coordinated paths selected in the optimization process are generally manually specified, and there is no Able to carry out systematic research and application on the identification and classification of critical paths within the intersection group

[0020] ④The traffic coordination control algorithm is not optimized according to the traffic characteristics of the oversaturated intersection group; the intersection group requires the traffic signal control system to take into account the coordination between adjacent intersections and optimize the signals of all signalized intersections in the high-density road network control scheme; in addition, due to the small distance between adjacent intersections in the intersection group, the traffic flow between adjacent intersections has a great influence on each other

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