【发布时间】:2018-06-11 08:02:58
【问题描述】:
我的代码逻辑有问题,我没有找到任何解决方案。
我怀疑我正在使用两个红外传感器接口与 Arduino,所以当汽车通过第一个传感器和第二个传感器时,我正在发送汽车通过的数据。没关系,但每当 car1 通过第一个传感器和另一辆车时,比如 car2 在第二个传感器,那么 flag 也变为 1,这是真的,但我不希望这样。
如何编写代码让汽车通过两个传感器?如果汽车 1 在传感器 1 中,而汽车 2 在传感器 2 中,则标志不应为 1。
请在下面找到代码:
#include<avr/wdt.h>
#define DISTANCE 100
const int trigPin1 = 7;
const int echoPin1 = 6;
const int trigPin2 = 5;
const int echoPin2 = 4;
int MOVE_FLAG = 0;
void setup() {
// initialize serial communication:
Serial.begin(9600);
MOVE_FLAG = 0;
wdt_enable(WDTO_8S);
}
void loop()
{
// establish variables for duration of the ping,
// and the distance result in inches and centimeters:
long duration1, duration2, inches1, inches2, cm1, cm2;
// The sensor is triggered by a HIGH pulse of 10 or more microseconds.
// Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
pinMode(trigPin1, OUTPUT);
digitalWrite(trigPin1, LOW);
delayMicroseconds(2);
digitalWrite(trigPin1, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin1, LOW);
// Read the signal from the sensor: a HIGH pulse whose
// duration is the time (in microseconds) from the sending
// of the ping to the reception of its echo off of an object.
pinMode(echoPin1, INPUT);
duration1 = pulseIn(echoPin1, HIGH);
inches1 = microsecondsToInches(duration1);
cm1 = microsecondsToCentimeters(duration1);
delay(10);
pinMode(trigPin2, OUTPUT);
digitalWrite(trigPin2, LOW);
delayMicroseconds(2);
digitalWrite(trigPin2, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin2, LOW);
pinMode(echoPin2, INPUT);
duration2 = pulseIn(echoPin2, HIGH);
// convert the time into a distance
inches2 = microsecondsToInches(duration2);
cm2 = microsecondsToCentimeters(duration2);
if(cm1 <= DISTANCE && cm2 <= DISTANCE && MOVE_FLAG == 0)
{
Serial.println("3");
MOVE_FLAG = 1;
}
if (cm1 > DISTANCE && cm2 > DISTANCE && MOVE_FLAG == 1)
{
MOVE_FLAG = 0;
delay(500);
}
delay(50);
wdt_reset();
}
long microsecondsToInches(long microseconds)
{
return microseconds / 74 / 2;
}
long microsecondsToCentimeters(long microseconds)
{
return microseconds / 29 / 2;
}
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标签: arduino