Design And Implementation Of The Traffic Signal Control System Based On The Array Control

The array traffic control system is a new intelligent traffic control system.Behind the intersection traffic lights,build one or more sets of inductive devices,orderly pre-arrangement of traffic flow in advance and than multi-lane release,maximize the use of road space to improve the efficiency of traffic at intersections.At the same time,according to the traffic flow of different time periods,the corresponding array phase period table is operated,depending on traffic flow pressure,select the array mode and the non-array mode.Array-type traffic control technology improves vehicle traffic rates at intersections,alleviate the traffic pressure on the upstream and downstream of the intersection.In this paper,aiming at the array traffic control system,detailed design of system hardware and software.Research on queuing control systems,a new type of traffic signal control system with stable operation was realized.The array signal control system is based on the 32-bit ARM CortexTM-M3,it integrates peripheral circuits such as power modules,FPGA driver modules,communication modules,and flash modules.Realizes display control of LED dual primary color array induction screen.The array signal control system communicates with the array center system through RS485,and the array communication lamp is effectively controlled by the isolated relay.In addition,the array signal controller also has the function of collecting ambient light intensity and temperature.In software design develop MCU,FPGA and PC software for the array signal system.The MCU uses the IAR as the development environment,the FPGA uses the Quartus II development environment,and the host computer uses Visual Basic for development.In the array signal control system,the MCU software completes the functions of communication,drive,display update and signal control.The FPGA is used to drive the LED display.The upper computer only needs to be tested on the protocol docking of the array signal control system and the central control system,also use to on-site debugging and initialization of system parameters.The core part of the array signal control system is the control algorithm of the array signal.Combines the traffic signal control method and the actual situation to complete the effective control of the array signal.The array traffic control system in conjunction with intersection traffic light control system control vehicle entering array,release,exit array,change lanes and change phases.Orderly controllable traffic direction.The system adopts the fuzzy control algorithm to reasonably arrange the array signal lights,and finally realizes the continuous row or non-continuous array of traffic in each lane.