Abstract:

A single intersection adaptive control system is designed using the SOPC scheme to improve the road intersection capacity.The hardware of the controller is designed using FPGA chip with NiosⅡ,and the signal timing optimization model is established with the genetic algorithm in hardware written in VHDL language and of single point adaptive controller procedure by genetic algorithm in C language.The Wenjiang district intersection data of Chengdu city is simulated as an example of the software and hardware system debugging,and an optimization scheme is obtained for the signal intersection.The simulation results show that for intersection signal by using the optimized scheme,the imported vehicle queue is zero.The design of NiosⅡ single point online based adaptive controller proves feasible and effective.

Key words: NiosⅡ;FPGA;genetic algorithm;single crossroad;adaptive control