基于arduino的5路循迹小车(3)
使用红外模块的定位停车
以及超声波避障
接第一篇链接 https://blog.csdn.net/weixin_45984029/article/details/103437347
1.硬件选用
1.红外循迹模块(与上篇相同)
2.超声波模块
2.接线
1.红外模块
VCC接开发板3.3V
GND接开发板GND
D0接开发板信号口(具体位置对应代码)
A0不接
2.超声波模块
VCC接开发板5V
GND接开发板5V
Trig和Echo接开发板信号口(具体位置对应代码)
3.代码
int Left_motor_go1 = 24; //左电机前进 AIN1
int Left_motor_back1 = 25; //左电机后退 AIN2
int Right_motor_go1 = 22; //右电机前进 BIN1
int Right_motor_back1 = 23; //右电机后退 BIN2
int Left_motor_pwm1 = 3; //左电机控速 PWMA1
int Right_motor_pwm1= 5; //右电机控速 PWMB1
int Left_motor_pwm2 = 4; //左电机控速 PWMA2
int Right_motor_pwm2= 6; //右电机控速 PWMB2
//循迹红外引脚定义
//TrackSensorLeftPin1 TrackSensorLeftPin2 TrackSensorMid TrackSensorRightPin1 TrackSensorRightPin2
// A1 A2 A3 A4 A5
const int TrackSensorLeftPin1 = A1; //定义第一个循迹红外传感器引脚为A1
const int TrackSensorLeftPin2 = A2; //定义第二个循迹红外传感器引脚为A2
const int TrackSensorMid = A3; //定义第三个循迹红外传感器引脚为A3
const int TrackSensorRightPin1 = A4; //定义第四个循迹红外传感器引脚为A4
const int TrackSensorRightPin2 = A5; //定义第五个循迹红外传感器引脚为A5
// TrackSensorRightPin3 进行计数
// A6
const int TrackSensorRightPin3 = A6; //右主计数
//定义计数变量
int JS2;
//定义各个循迹红外引脚采集的数据的变量
int SLL;
int SL;
int SM;
int SR;
int SRR;
int echoPin = 32; //超声波
int trigPin = 33;
unsigned int S;
int a;
void setup()
{
Serial.begin(9600);//超声波
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
//初始化电机驱动IO口为输出方式
pinMode(Left_motor_go1, OUTPUT);
pinMode(Left_motor_back1, OUTPUT);
pinMode(Right_motor_go1, OUTPUT);
pinMode(Right_motor_back1, OUTPUT);
//定义四路循迹红外传感器为输入接口
pinMode(TrackSensorLeftPin1, INPUT);
pinMode(TrackSensorLeftPin2, INPUT);
pinMode(TrackSensorMid,INPUT);
pinMode(TrackSensorRightPin1, INPUT);
pinMode(TrackSensorRightPin2, INPUT);
//四路循迹红外传感器初始化为高电平
digitalWrite(TrackSensorLeftPin1, HIGH);
digitalWrite(TrackSensorLeftPin2, HIGH);
digitalWrite(TrackSensorMid,HIGH);
digitalWrite(TrackSensorRightPin1, HIGH);
digitalWrite(TrackSensorRightPin2, HIGH);
}
void run(int left_speed, int right_speed)
{
//左电机前进
digitalWrite(Left_motor_go1, LOW); //左电机前进使能
digitalWrite(Left_motor_back1, HIGH); //左电机后退禁止
analogWrite(Left_motor_pwm1, LOW);
analogWrite(Left_motor_pwm2, left_speed);
//右电机前进
digitalWrite(Right_motor_go1, LOW); //右电机前进使能
digitalWrite(Right_motor_back1, HIGH); //右电机后退禁止
analogWrite(Right_motor_pwm1, LOW);
analogWrite(Right_motor_pwm2, right_speed);
}
void left(int left_speed, int right_speed)
{
//左电机后退
digitalWrite(Left_motor_go1, HIGH); //左电机前进禁止
digitalWrite(Left_motor_back1,LOW); //左电机后退禁止
analogWrite(Left_motor_pwm2, left_speed);
analogWrite(Left_motor_pwm1,LOW);
//右电机前进
digitalWrite(Right_motor_go1, LOW); //右电机前进使能
digitalWrite(Right_motor_back1, HIGH); //右电机后退禁止
analogWrite(Right_motor_pwm2, LOW);
analogWrite(Right_motor_pwm1, right_speed);
}
void right(int left_speed, int right_speed)
{
//左电机前进
digitalWrite(Left_motor_go1, LOW); //左电机前进使能
digitalWrite(Left_motor_back1, HIGH); //左电机后退禁止
analogWrite(Left_motor_pwm2, LOW);
analogWrite(Left_motor_pwm1, left_speed);
//右电机后退
digitalWrite(Right_motor_go1, HIGH ); //右电机前进禁止
digitalWrite(Right_motor_back1,LOW); //右电机后退禁止
analogWrite(Right_motor_pwm2, right_speed);
analogWrite(Right_motor_pwm1, LOW );
}
void barke(int left_speed, int right_speed)
{
//左电机停止
digitalWrite(Left_motor_go1, HIGH); //左电机前进使能
digitalWrite(Left_motor_back1, HIGH); //左电机后退禁止
analogWrite(Left_motor_pwm1, left_speed);
analogWrite(Left_motor_pwm2, left_speed);
//右电机停止
digitalWrite(Right_motor_go1, HIGH ); //右电机前进禁止
digitalWrite(Right_motor_back1,HIGH); //右电机后退禁止
analogWrite(Right_motor_pwm1, right_speed);
analogWrite(Right_motor_pwm2, right_speed);
}
void back(int left_speed, int right_speed)
{
//左电机后退
digitalWrite(Left_motor_go1, HIGH); //左电机前进禁止
digitalWrite(Left_motor_back1, LOW); //左电机后退使能
analogWrite(Left_motor_pwm1, left_speed);
analogWrite(Left_motor_pwm2, LOW);
//右电机后退
digitalWrite(Right_motor_go1, HIGH); //右电机前进禁止
digitalWrite(Right_motor_back1, LOW); //右电机后退使能
analogWrite(Right_motor_pwm1, right_speed);
analogWrite(Right_motor_pwm2, LOW);
}
void bank(int left_speed, int right_speed)//惯性停车
{
//左电机空
digitalWrite(Left_motor_go1, LOW); //左电机前进禁止
digitalWrite(Left_motor_back1, LOW); //左电机后退禁止
analogWrite(Left_motor_pwm1, left_speed);
analogWrite(Left_motor_pwm2, left_speed);
//右电机空
digitalWrite(Right_motor_go1, LOW); //右电机前进禁止
digitalWrite(Right_motor_back1,LOW); //右电机后退禁止
analogWrite(Right_motor_pwm1, right_speed);
analogWrite(Right_motor_pwm2, right_speed);
}
void xunji()//循迹
{
a = 0;
//检测到黑线时循迹模块相应的指示灯灭,端口电平为HIGH
//未检测到黑线时循迹模块相应的指示灯亮,端口电平为LOW
SLL = digitalRead(TrackSensorLeftPin1);
SL = digitalRead(TrackSensorLeftPin2);
SM = digitalRead(TrackSensorMid);
SR = digitalRead(TrackSensorRightPin1);
SRR = digitalRead(TrackSensorRightPin2);
//计数
JS2 = digitalRead(TrackSensorRightPin3);
//循迹
if( SM == HIGH )
{
run(45,37);
}
if( SL == HIGH && SM == LOW)
{
left(35,57);
}
if( SLL == HIGH && SM == LOW)
{
left(35,57);
}
if( SR == HIGH && SM == LOW)
{
right(50,32);
}
if( SRR == HIGH && SM == LOW)
{
right(50,32);
}
if(SR == HIGH && SRR == HIGH)
{
right(50,32);
}
if(SL == HIGH && SLL == HIGH)
{
left(30,57);
}
if(SRR == HIGH && SR == HIGH && SM == HIGH && SL == HIGH)
{
right(50,32);
}
if(SM == HIGH && (SL == HIGH && SLL == HIGH) || (SR == HIGH && SL == HIGH) || (SR == HIGH && SRR == HIGH))
{
run(45,37);
}
}
void loop()
{
xunji();//调用循迹
if(JS2 == HIGH)
{
a++;
if(a == 1)
{
barke(120,120);//停车
delay(650);
bank(0,0);
delay(1000);
}
}
range();//超声波检测
}
void range()
{
digitalWrite(trigPin,LOW); //测距
delayMicroseconds(2); //延时2微秒
digitalWrite(trigPin,HIGH);
delayMicroseconds(20);
digitalWrite(trigPin,LOW);
int distance = pulseIn(echoPin,HIGH); //读取高电平时间
distance = distance/58;
S = distance; //把值赋给S
if( S < 16 )//小于16厘米时,调用避障程序
{
BZ();
}
}
void BZ()//避障程序
{
barke(120,120);
delay(600);
bank(0,0);
delay(300);
back(45,37);
delay(300);
barke(120,120);
delay(300);
bank(0,0);
delay(300);
left(55,65);
delay(700);
run(55,55);
delay(1000);
right(55,45);
delay(400);
run(55,55);
delay(1000);
right(55,45);
delay(400);
run(55,55);
delay(1046);
left(55,55);
delay(550);
}
4.测试小车
定位停车用的是红外模块扫到黑线停车,停车方式为电机堵转急停
超声波避障中的代码请根据具体情况填写
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