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摘 要智能交通灯控制系统对交通控制系统的完善有着重要作用，为了更好地控制交通系统，缓解交通压力，本论文基于Arduino设计智能交通信号灯,根据道口检测的交通车流量，实现红绿灯自动切换的功能。38503
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基于Arduino的交通信号灯是以型号为ATmega328的AVR单片机作为控制器的主控制芯片。系统可实现以下五种功能：
（1）、可以实现数码管倒计时的控制；
（2）、能实现信号灯显示的基本功能；
（3）、检测车流量调整通行时间，这是通过压力传感器对车流量进行计数，达到一定数值后采用中断延时的程序；
（4）、利用红外线传感器与蜂鸣器结合，组成报警电路，对于闯红灯的行人发出安全警报；
（5）、利用光敏电阻的特性设计路口违规车辆检测电路，该设计可以更精确的对十字路口的交通进行检测，使交通更加通畅，并对违规行为进行监控。
按照本论文设计的功能做出相应的系统试验，设计出了对应的程序代码。在对设计的智能交通灯做测试后，能实现各个方向绿灯25s，黄灯5s，红灯30s的基本计数功能，还实现了报警电路以及违规监测的功能。对于车流量检测的功能还并不能按照设计的那样去实现，这是所做实验的一个缺陷。
毕业论文关键字：智能 交通灯 Arduino 传感器
Abstract
Intelligent traffic control system play an important role in the traffic control system. In order to better control the transportation system, alleviate traffic pressure. This paper designs the intelligent traffic light based on Arduino, According to the traffic flow crossing detection, traffic lights to achieve automatic switching function.
Traffic signal system based on the Arduino use ATmega328 micro controller as the main control chip of the controller. The system can achieve five basic and innovative features:
Firstly, digital tube can achieve countdown;
Secondly, the digital lights can display;
Thirdly, it also can realize the flow rate of traffic detection and adjustment of the passage of time, it count the number of the flow rate of traffic up through the pressure sensor for traffic, when it comes to a certain value, the interrupt latency of the program will be executed;
Fourthly, this design also combines with the use of infrared sensor and the buzzer to be an alarm circuit, when the red light of the pedestrian issues a security alert.
Last, the use of photosensitive resistance characteristic design of intersection vehicle violation detection circuit, the design can be more precise of intersection traffic and make the traffic more smoothly, and to monitor violations.
Make the corresponding experience according to the function of design, designed the corresponding program code. In the design of intelligent traffic light test can realize each direction of the green 25s, yellow light 5S, red 30s basic counting function, but also to achieve the alarm circuit and illegal monitoring function. The traffic flow detection function is not in accordance with the design as to realize, this is a limitation for the real thing.
Keywords: Intelligent Traffic light Arduino Sensor
目 录
摘 要 I
Abstract II
1 绪论 1
1.1研究背景 1
1.2研究意义 2
1.3设计内容 3
2 总体设计方案 5
2.1智能交通信号灯的功能 5
2.2系统模块框图 6
2.3控制器选择 6
2.3.1 AVR芯片 7
2.3.2 DSP芯片 7
2.3.3 ARM芯片 8
2.3.4 确定所使用的芯片 8