AN OVERVIEW ON DESIGNS OF INTELLIGENT TRAFFIC LIGHT CONTROLLER
Keywords:
Traffic Light Control System, Field-programmable Gate Array (FPGA) ,Xilinx, VHDL, VLSI, 89V51RD2,IR sensors.Abstract
The traffic in urban areas is mainly regularized by traffic lights, which may contribute to the unnecessary long waiting times for vehicles if not efficiently configured. This efficient configuration can be the part of traffic light controller system, but still the most of the traffic lights are based on a 'fixed cycle' protocol. This paper concerned with an overview on FPGA design implementation of a low cost 24-hour advanced traffic light controller system that was built as a VLSI design using VHDL and its comparison with traffic light controller system using IR sensors and microcontroller. The traffic light is one of the real and complex traffic lights for four roads and motorway with sensors. FPGA Design Based on dual-mode traffic light control system has a simple circuit with high reliability and high computing speed, better scalability, as well as reconfiguration of good characteristics. The microcontroller used in the system is 89V51RD2 which is MCS-51 family based. The system is having IR transmitter and receiver which are mounted on the either sides of roads respectively. This paper also makes attempt to supply the benefits and disadvantages of both the systems.
