Design and Implementation of a Green Traffic Light Controller on FPGA Using VHDL
A traffic light system ensures that the flow of traffic remains smooth and balanced. For this purpose, a combination of various signs and devices is included in the system. A traffic light controller can be designed using either a microcontroller or a field programmable gate array, but since FPGA’s are more flexible and fast than a microcontroller, the traffic light controller presented in this paper has been implemented on FPGA using VHDL. A modern traffic light system needs to be even more power efficient than the previous versions. So to reduce the power dissipation, the clock gating technique is applied in the design. Clock gating enables the clock only for those portions of circuitry that are active, thus reducing the dynamic power.
KeywordsVHDL FPGA Traffic light Clock gating
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