Self-adaptive timing system of traffic signal lamps

Abstract

The invention relates to a self-adaptive timing system of traffic signal lamps. The self-adaptive timing system of the traffic signal lamps comprises a signal machine, a server and a vehicle flow detector; the server can obtain a corresponding timing strategy by calculation and perform required timing strategy adjustment, so that the timing strategy needing to be adjusted is sent to the signal machine; the signal machine performs timing strategy adjustment of the signal lamps according to the received timing strategy; furthermore, the signal machine can send the current timing strategy into the server, so that the server can obtain the flow rate and the saturated flow rate of an intersection under the current timing strategy by calculation according to the current timing strategy transmitted by the signal machine; and the server can re-determine the corresponding timing strategy and perform required timing strategy adjustment according to the flow rate and the saturated flow rate underthe current timing strategy. By means of the self-adaptive timing system of the traffic signal lamps in the invention, self-adaptive timing of traffic signals of the intersection can be realized; simultaneously, the traffic jam of a current intersection is continuously judged according to a novel timing scheme; and thus, self-adaptive timing is realized.

Description

technical field [0001] The invention relates to a timing system, in particular to an adaptive timing system for traffic lights, belonging to the technical field of intelligent transportation. Background technique [0002] In recent years, with the improvement of the level of urbanization, the population and density of the city have continued to increase, coupled with the vigorous development of the vehicle industry, the number of motor vehicles in the city has continued to increase, but the development of urban road infrastructure has lagged behind, resulting in traffic The contradiction between demand and supply has become increasingly prominent. At present, most cities across the country are generally facing serious traffic congestion problems. How to alleviate or solve traffic congestion has become one of the problems that need to be solved in urban development. [0003] Urban arterial roads are the main part of the urban road network, carrying most of the transportation...

AI Technical Summary

Problems solved by technology

[0004] Scientific and reasonable implementation of signal light timing at intersections is effective in alleviating urban traffic, but in the process of its implementation, there will always be some reasons that make its operation effect greatly reduced

Its main problems are: (1), for the key intersection or main intersection signal timing in the one-way system, because of the lack of specific analysis of the traffic characteristics of the one-way system, and the defects of the traditional signal timing parameters, making It is difficult or inaccurate to determine the value of the timing parameter-saturation flow rate, which eventually leads to a large error in signal timing; (2). They appear in pairs, so in order to achieve the desired effect of the one-way system, coordinated control should be implemented for each intersection in the system. The lack of construction funds has made it a luxury to use advanced intelligent control systems to achieve coordinated control of arterial roads or regional intersection groups. Even if the simplest coordinated control algorithm is used, it is difficult for ordinary signal managers to grasp the control principle and calculation process. It is also very complicated and lacks practicality

[0005] At present, for most cities, the timing of traffic lights mostly adopts a fixed timing strategy. When a certain intersection is congested, the traffic police can only manually adjust the timing of signal lights or directly direct traffic to ease traffic. Congestion, and for most cities, the police force of the traffic police is limited and cannot cover every intersection

[0006] For most intersections, a fixed signal light timing strategy is usually given, which can meet most traffic conditions; but for urban arterial intersections, there are usually peak periods, and The fixed signal light timing strategy is often difficult to meet the traffic conditions during peak hours, resulting in traffic jams

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