نظام انذار بواسطة اردوينو

 بناء نظام إنذار باستخدام اردوينو UNO R3

قصة

في هذا المشروع، سنتعلم كيفية بناء نظام إنذار محلي.

وحدة التحكم Micro Project هذه هي Arduino Uno R3 وسوف نستخدم النقطات في التعليمات البرمجية.

يمكنك إجراء التعديلات الخاصة بك لأن النظام متعدد الاستخدامات.

#define pi 3.14
#define max_lenh 320


/* flags */
bool NORMAL_STATE = false;
bool HIGH_STATE	  = false;
bool LOW_STATE    = false;
bool TEST_MODE	  = false;
bool bip          = false;

/* time counter */
int timer_cnt = 0; 

/* photoresistor values */
int light_val = 100;
const int max_val = 255;
const int min_val = 3;

/* pins setup */
const int photoresistor_pin = A0; 	//photoresistor to arduino pin A0
const int button_pin = 10;			//button_pin
const int buzzer_pin = 11; 			//buzzer to arduino pin 11
const int relay_pin  = 12; 			//relay to arduino pin 12
const int led_pin 	 = 13; 			//led pin



void setup()
{
  pinMode(button_pin, INPUT);  // Set BUTTON - pin 10 as an input
  pinMode(buzzer_pin, OUTPUT); // Set buzzer - pin 11 as an output
  pinMode(relay_pin, OUTPUT);  // Set relay  - pin 12 as an output
  pinMode(led_pin, OUTPUT);    // Set led    - pin 13 as an output
  Serial.begin(9600);
  
  // TIMER 1 for interrupt frequency 2 Hz:
  cli(); // stop interrupts
  TCCR1A = 0; // set entire TCCR1A register to 0
  TCCR1B = 0; // same for TCCR1B
  TCNT1  = 0; // initialize counter value to 0
  // set compare match register for 2 Hz increments
  OCR1A = 31249; // = 16000000 / (256 * 2) - 1 (must be <65536)
  // turn on CTC mode
  TCCR1B |= (1 << WGM12);
  // Set CS12, CS11 and CS10 bits for 256 prescaler
  TCCR1B |= (1 << CS12) | (0 << CS11) | (0 << CS10);
  // enable timer compare interrupt
  TIMSK1 |= (1 << OCIE1A);
  sei(); // allow interrupts

}

void loop()
{ 
  
}


ISR(TIMER1_COMPA_vect){
   
  if(timer_cnt == 0) //cheak value of photoresistor when counter = 0
  {
	light_val = analogRead(photoresistor_pin);
   	if(light_val < min_val)
    {
	  	 NORMAL_STATE = false;
		 HIGH_STATE	  = false;
		 LOW_STATE    = true;
      	 TEST_MODE	  = false;
    }
    else if(light_val > max_val)
    {
      	 NORMAL_STATE = false;
		 HIGH_STATE	  = true;
		 LOW_STATE    = false;
         TEST_MODE	  = false;
    }
    else
    {
      	 NORMAL_STATE = true;
		 HIGH_STATE	  = false;
		 LOW_STATE    = false;
      	 TEST_MODE	  = false;
    }
  }
  
  
  if(digitalRead(button_pin)) //test mode
  {
    
    NORMAL_STATE  = false;
    HIGH_STATE	  = false;
    LOW_STATE     = false;
    TEST_MODE	  = true;
   
  }
  
  
  
  if(LOW_STATE)
  {
    if(bip)
    {
      tone(buzzer_pin, 500); // Send 0.5KHz sound signal...
      bip = false;
    }
    else
    {
      noTone(buzzer_pin);     // Stop sound...
      bip = true;
    }
    
    digitalWrite(relay_pin, LOW); //turns off light bulb
    digitalWrite(led_pin, LOW);	  //turns off led
    
  }
  
  else if(HIGH_STATE)
  {
	noTone(buzzer_pin); 
    bip = false;
    digitalWrite(relay_pin, HIGH); //turns ON light bulb
    digitalWrite(led_pin, LOW);	   //turns off led

    
  }
  
  else if(NORMAL_STATE)
  {
	noTone(buzzer_pin); 
    bip = false;
    digitalWrite(relay_pin, LOW); //turns off light bulb
    digitalWrite(led_pin, HIGH);  //turns on led   
  }
  
  else if(TEST_MODE)
  {
	noTone(buzzer_pin); 
    bip = false;
    digitalWrite(relay_pin, HIGH);    //turns on light bulb
    digitalWrite(led_pin, HIGH);	  //turns on led
  }