Single intersection traffic signal fuzzy controller

Abstract

The invention belongs to the field of fuzzy control, and particularly relates to a single intersection traffic signal fuzzy controller which comprises a knowledge base (A*oR), a fuzzy inference engine (oR), quantification factors (Kx, Ky and Kt), a fuzzy input module (D / F) and a clearness output module (F / D), two-input signals are traffic flows x1 and y1 in an annular coil vehicle detector acquisition road network, a single-output single is real-time phase green light extension time u, the traffic flows x1 and y1 are converted into fuzzy input variables X and Y through the fuzzy input module (D / F), the fuzzy input variables X and Y are inputted to the fuzzy inference engine (oR) and ratiocinated and analyzed by the aid of the knowledge base (A*oR) to obtain a fuzzy control green light extension time output variable U, and the real-time phase green light extension time u can be acquired through the clearness output module (F / D). Current phase traffic flow information can be fuzzily controlled, a green light signal is delayed when the traffic flow is large, so that the traffic flow is evacuated, and smooth traffic is realized.

Description

technical field [0001] The invention belongs to the field of fuzzy control, in particular to a single intersection traffic signal fuzzy controller. Background technique [0002] At present, there are basically two signal control methods used for single intersections, one is a timing control method, and the other is an induction control method. The timing control method uses a pre-set signal timing scheme for signal control. It does not consider real-time vehicle information and cannot change the signal timing according to the number of vehicles arriving. Its parameters are determined by known data through a series of mathematical calculations. The calculation is deduced, and the signal is executed repeatedly according to the cycle, so it is difficult to reflect the internal laws of the traffic system. The method adopted in the induction control method is to use the coil detector to collect the traffic flow in the road network to calculate the phase time. Compared with the t...

AI Technical Summary

Problems solved by technology

The timing control method uses a pre-set signal timing scheme for signal control. It does not consider real-time vehicle information and cannot change the signal timing according to the number of vehicles arriving. Its parameters are determined by known data through a series of mathematical calculations. The calculation is deduced, and the signal is executed repeatedly according to the cycle, so it is difficult to reflect the internal laws of the traffic system

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