Two-level pan-logic intelligent control method and control system for single intersection signal lights

Abstract

The invention relates to a two-level universal logic intelligent control method and control system for the signal lamps of a single intersection. In each control period of the control of the signal lamps of the single intersection includes the following steps that: the traffic conditions of the intersection are sampled, so that the input quantities of a controller, namely, traffic steam length and traffic steam intensity in two directions, can be obtained; the traffic steam length and traffic steam intensity in two the directions are generalized and transformed into corresponding quantities on the working interval of a universal combination model; a universal logic controller with the universal combination model adopted a core is built, decision-making is performed according to the generalized traffic steam length and traffic steam intensity in the two directions, and the green lamp delay delta t' of the traffic signal lamps in the x direction is obtained through first-level control and second-level control; the delta t' is generalized, so that corresponding actual green lamp delay delta t can be obtained; and the green lamp delay delta t acts on the signal lamps, and therefore, signal lamp control in the corresponding period can be completed. According to the method, in a control process, the universal operation combination model which can better simulate the thinking logic of traffic police is adopted.

Description

technical field [0001] The invention relates to the technical field of intelligent control of signal lamps, in particular to a secondary pan-logic intelligent control method and control system for single intersection signal lamps. Background technique [0002] In the traffic network of small and medium-sized cities, most of the single intersections are formed by the intersection of two roads with small traffic volume or the intersection of one main road and one primary road. Generally, two-phase traffic lights are used. The two-phase schematic diagram is as follows figure 2 and image 3 shown. Let the horizontal road be the x-direction road, the vertical road be the y-direction road, and use the video collection equipment commonly available at traffic intersections to collect traffic data. The collected information mainly includes the length of the traffic flow in the x direction x(k), the traffic flow in the x direction Intensity lambda x (k), the length of the traffic f...

AI Technical Summary

Problems solved by technology

The traditional intersection signal light control method adopts model control or artificially sets multiple schemes in advance. Since the parameters of the signal phase and timing scheme are fixed, it cannot follow the change of traffic volume, resulting in the intersection where there are often no vehicles passing in the direction of green lights and red lights. There are many vehicles waiting in the direction of the lights; even if intelligent control methods such as fuzzy control are used, it is impossible to simulate the actual traffic control process of the traffic police at the intersection. The control decision of the signal light controller only depends on the traffic in all directions at the intersection. The situation, like the traffic police, did not comprehensively consider the relationship between the traffic conditions in all directions within a certain period of time, resulting in the inability to adjust the signal lights in a timely and adaptive manner during peak hours, and unable to reasonably allocate traffic flow to reduce the delay rate.

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