TITLE:
Design of Traffic Light Based on Field Programmable Gate Array
AUTHORS:
Lei Zhao
KEYWORDS:
FPGA, Intelligent Traffic Lights, Clock Division, Polling Model
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.9 No.5,
May
27,
2021
ABSTRACT: The use
of fixed-time traffic lights for road traffic control has the disadvantage of
low traffic efficiency. In order to optimize the vehicle traffic at the
intersection, this paper proposes a design scheme of a real-time control system
for road intelligent traffic lights based on FPGA. The system adopts the
polling control model, the vehicle detector detects the arrival rate of vehicles,
and obtains the corresponding traffic light green time length according to the
traffic rules and polling model theory. Using Altera’s
Cyclone IV series EP4CE15E22C8 chip as the development platform, a specific
design plan is given. The circuit mainly includes program-controlled amplifier
module, AD acquisition module, cross-correlation calculation module, serial
port transmission and Lab-VIEW module. The system can realize the intelligent
adjustment of traffic lights. Different vehicle arrival rates are detected at
different times, so that the corresponding traffic light configuration time
length changes accordingly. This intelligent adjustment controls road traffic
and makes the main and branch roads coordinate and cooperate, thereby improving
the traffic efficiency of the intersection.