如何使用Arduino設(shè)計(jì)延時(shí)繼電器?

ID:204072 · 發(fā)表于 2024-8-30 18:42

如題，求大俠！

ID:444392 · 發(fā)表于 2024-8-31 10:26

簡(jiǎn)單程序直接用等待語(yǔ)句，復(fù)雜場(chǎng)合用中斷？

ID:155507 · 發(fā)表于 2024-8-31 12:50

給你個(gè)參考。

int led_pin = 18;
int relay_pin = 12;
int sensor_pin = 4;

bool detected = false;
bool stop_relay = false;
unsigned long motion_stopped_time = 0; //will track the elapsed time after the motion stop

void setup() {
  pinMode(led_pin, OUTPUT);
  pinMode(relay_pin, OUTPUT);
  pinMode(sensor_pin, INPUT_PULLUP);
  Serial.begin(9600);
}

void loop(){

  if(digitalRead(sensor_pin) == HIGH){ //the sensor has detected motion

      //enclose the code here so it only executes once when motion is detected
      if(detected == false){
         Serial.println("Motion detected!");
         detected = true;

         digitalWrite(led_pin, HIGH); //turn led on
         digitalWrite(relay_pin, HIGH); //switch the relay on

      }

  }else{ //the sensor has stopped detecting motion

   if(detected == true){ //execute this only once when motion stops
         Serial.println("Motion stopped!");
         detected = false;

         digitalWrite(led_pin, LOW); //turn the led off

         motion_stopped_time = millis(); //remember the current time
         stop_relay = true;

   }else{
      if(stop_relay == true){ // ensures that this block will only execute once after the delay timer logic below

         //the current millis() time is 60sec more than the remembered time when the motion stopped
         if(millis() - motion_stopped_time >= 60000){
            digitalWrite(relay_pin, LOW); //switch the relay off
            stop_relay = false;
         }

      }
   }
  }
}

ID:291549 · 發(fā)表于 2024-8-31 14:18

1、輸入定時(shí)延時(shí)函數(shù)數(shù)值。2、為了模擬，輸出為13，板子上面有LED觀察，可改為其它引腳為繼電器輸出。
3、2、3設(shè)定為定時(shí)開(kāi)始和停止按鍵。
由于要求未說(shuō)明白，本例使用MsTimer2定時(shí)器和硬件中斷，以提高穩(wěn)定性。

#include <MsTimer2.h>
// 設(shè)定各類(lèi)函數(shù)，定時(shí)、開(kāi)始、停止、執(zhí)行
volatile int atime;
volatile boolean start;
volatile boolean stop;
volatile boolean led;
void msTimer2_func() {
start = start;
digitalWrite(13,start);
}
void attachInterrupt_fun_RISING_2() {
// MsTime2定時(shí)器
MsTimer2::set(atime, msTimer2_func);
MsTimer2::start();
}
void attachInterrupt_fun_RISING_3() {
MsTimer2::stop();
digitalWrite(13,stop);
}
void setup(){
atime = 5000;//定時(shí)時(shí)間設(shè)定
start = true;
stop = false;
led = true;
pinMode(2, INPUT_PULLUP);
pinMode(13, OUTPUT);//執(zhí)行輸出
pinMode(3, INPUT_PULLUP);
interrupts();// 硬件中斷，2、3接開(kāi)始和停止按鈕
attachInterrupt(digitalPinToInterrupt(2),attachInterrupt_fun_RISING_2,RISING);
attachInterrupt(digitalPinToInterrupt(3),attachInterrupt_fun_RISING_3,RISING);
}
void loop(){
}

復(fù)制代碼

看能否適用這個(gè)要求。
[color=rgba(0, 0, 0, 0.85)]

ID:204072 · 發(fā)表于 2024-9-2 22:04

感謝前輩指點(diǎn)！的確沒(méi)有描述清楚，奉上原理圖及時(shí)序圖。煩請(qǐng)指點(diǎn)，謝謝！
如圖，按鈕AN按下后，D2、D3點(diǎn)亮，D4保持熄滅；按鈕松開(kāi)，開(kāi)始延時(shí)，D2熄滅，D3延時(shí)后熄滅，D4點(diǎn)亮；延時(shí)結(jié)束后全部熄滅。
無(wú)標(biāo)題.jpg

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如何使用Arduino設(shè)計(jì)延時(shí)繼電器?