Photosensitive Timing Infrared LED Control System Based On Arduino

• Tweet
• Pin It

Web site:

http://www.instructables.com/id/Photosensitive-Timing-Infrared-LED-Control-System-/

Project Summary:

ICStation Team introduce you this Photosensitive timing infrared LED control system. This system uses DC5V voltage to work.When the intensity of light is weak and somebody appears in the infrared area, the LED will be on. While the intensity of environmental light is strong enough or nobody appears in the area of infrared induction, the LED will be off. The 4-bit digital tube will display the time.The buzzer will alarm for 20 seconds during the 24 o’clock at midnight.And from 24 o’clock to the 8 o’clock in the morning is the manual control.It is a simple, low-cost LED control system. It is suitable for the illumination in the area such as office, warehouse, guard room.

Full Project:

Functions

1) When start up, the hardware initialized and the LED will flash. The 4-bit digital tube display the initialized time 23:59.

2)When nobody appears in the infrared induction area, the LED will not light.

3)When the intensity of environmental light is weak and somebody is appearing in the infrared induction area, the LED will light till the person leaves the infrared induction area.

4) On 24 o’clock at midnight, the buzzer will alarm and the LED will switch to the manual control till 8 o’clock in the morning.

5)You can set the time by the switches.

Step 1: Components list

 

 

Circuit diagram:

 

Software & Code Snippets:

/*This digital tube is commen cathode*/
//set the interface of anode
int a = 26;
int b = 50;
int c = 48;
int d = 46;
int e = 42;
int f = 40;
int g = 38;
int dp = 36;
int ajs=4;
int ajf=1;
int kg = 6;
int cs = 1;
//set the interface of cathode
int d4 = 34;
int d3 = 32;
int d2 = 30;
int d1 = 28;
//set the viriate
long n = 7;
long k = 5;
long l = 3;
long m = 2;
long t = 0;
byte duan_segs[8] = { a, b, c, d, e, f, g, dp};
byte wei_segs[4] = { d1, d2, d3, d4 };
byte seven_seg_digits[10][7] = { { 1,1,1,1,1,1,0 },  // = 0
                                 { 0,1,1,0,0,0,0 },  // = 1
                                 { 1,1,0,1,1,0,1 },  // = 2
                                 { 1,1,1,1,0,0,1 },  // = 3
                                 { 0,1,1,0,0,1,1 },  // = 4
                                 { 1,0,1,1,0,1,1 },  // = 5
                                 { 1,0,1,1,1,1,1 },  // = 6
                                 { 1,1,1,0,0,0,0 },  // = 7
                                 { 1,1,1,1,1,1,1 },  // = 8
                                 { 1,1,1,1,0,1,1 }   // = 9
                             }; 
//the time of last opperating
unsigned long previousMillis = 0; 
//The minimum time interval
int INTERVAL = 1000;
//flag represents three mode£¬0-stop£¬1-timing£¬2-suspend
int flag = 1;
//Simulation of the mouth A0
int BUTTON = 0;
void setup()
{ 
  pinMode( 51 , OUTPUT);
  digitalWrite(51,LOW);
  digitalWrite(49,LOW);
  digitalWrite(47,HIGH);
  digitalWrite( A5 , LOW );
  Serial.begin(9600);
  pinMode( 47 , OUTPUT);
  for(int i=0;i<4;i++)
    pinMode(wei_segs[i], OUTPUT);
  for(int i=0;i<8;i++)
    pinMode(duan_segs[i], OUTPUT); 
}
 
void loop()
{        
    clearLEDs();
    pickDigit(1);
    lightSegments(m%10);
    dkg();
    jianyis();
      
    clearLEDs();
    pickDigit(2);
    lightSegments(l%10); 
    jiayis();
    
    clearLEDs();
    pickDigit(3);
    lightSegments(k%10);
     LED();    
    
    clearLEDs();
    pickDigit(4);
    lightSegments(n%10);
    zs();
    jishi();
    keyScan();
    jiayif();
    jianyif();    
    fmqx();
    fmqt();    
  // fmqx();
   //fmqt();
   //LED();
    //keyScan();
   // jiayis();
   // jianyis();
  //jiayif();
   //jianyif();
   // zs();
  // dkg();

   
  }

 
void pickDigit(int x)  //Define pickDigit(x),the function is to open dx interface 
{
  for(int i=0;i<4;i++)
  {
    if(i == (x-1))
      digitalWrite(wei_segs[i], LOW); 
    else
      digitalWrite(wei_segs[i], HIGH);    
  }
}
 
//set open point

 
//clear screen
void clearLEDs()  
{
  for (int i = 0; i < 8; i++) 
    digitalWrite(duan_segs[i], LOW);
}
 
 
//  light corresponding Numbers of Digital tube
void lightSegments(int x) 
{
  for (int i = 0; i < 7; i++) 
  {
    digitalWrite(duan_segs[i], seven_seg_digits[x][i]);
  }
}
 //keyscan
void keyScan()
{
  if(analogRead(BUTTON)>600)
   {
     delay(20);
     if(analogRead(BUTTON)>600)
     {
       flag++;
       if(flag>=3)
         flag=1;
       while(analogRead(BUTTON)>600);
     }
   }
}
//¹âÃôºì
void LED()
{
Serial.print( analogRead(A2) );
Serial.println("");
Serial.print( analogRead(A3) );
Serial.println("");
if (( ( ( analogRead(A2) ) < ( 400) ) && ( ( 120 ) < ( analogRead(A3) ) ) ))
{
digitalWrite( A5 , HIGH );
}
else
{
digitalWrite( A5 , LOW );
}
}
//   The hour add 1
void jiayis()
{  Serial.print( analogRead(A2) );
  Serial.println("");
  Serial.print( analogRead(A3) );
  Serial.println("");
  if(((analogRead(ajs)>600))&&(flag==1))
  {
         delay(20);
     if(((analogRead(ajs)>600))&&(flag==1))  
     {  t=0;
        l++;
        if(l==10)
        {
        m++;
        l=0;           
          }
         if((m==2)&&(l==4))
          {  n=0;
             k=0;
             l=0;
             m=0;             
        }        
       while(((analogRead(ajs)>600))&&(flag==1));
     }
  }   
}

//   the hour minus 1
void jianyis()
{
  if(((analogRead(ajs)>600))&&(flag==2))
  {
         delay(20);
     if(((analogRead(ajs)>600))&&(flag==2))  
     {  t=0;
        l--;
        if((l==-1)&&((m==1)||(m==2)))
        {
        m--;
        l=9;           
          }
         if((m==0)&&(l==-1))
          {  
             l=3;
             m=2;
             
        }        
       while(((analogRead(ajs)>600))&&(flag==2));
     }
  }   
}

//the minute add 1
void jiayif()
{  
  if(((analogRead(ajf)>600))&&(flag==1))
  {
         delay(20);
     if(((analogRead(ajf)>600))&&(flag==1));  
     {  t=0;
        n++;
          if(n==10)
          {
          k++;
          n=0;
          if(k==6)
          {
          n=0;
          k=0;
          l++;
        if(l==10)
        {
        m++;
        l=0;           
          }
         if((m==2)&&(l==4))
          {  n=0;
             k=0;
             l=0;
             m=0;             
        }
          }
          }        
       while(((analogRead(ajf)>600))&&(flag==1));
     }
  }   
}

//the minute minus 1
void jianyif()
{
  if(((analogRead(ajf)>600))&&(flag==2))
  {
         delay(20);
     if(((analogRead(ajf)>600))&&(flag==2));  
     {  t=0;
        n--;
          if(n==-1)
          {
          k--;
          n=9;
          if((k==-1))
          {
          n=9;
          k=5;
          l--;
        if(l==-1)
        {
        m--;
        l=9;           
          }
         if((m==-1)&&(l==9))
          {  
             l=3;
             m=2;             
        }
          }
          }        
       while(((analogRead(ajf)>600))&&(flag==2));
     }
  }   
}
//the buzzer alram
void fmqx()
{
if((n==0)&&(k==0)&&(l==0)&&(m==0)&&(t==0))
    {
      digitalWrite(47,LOW);
      digitalWrite(51,HIGH);
    }
}
//the buzzer stop
void fmqt()
{
if((n==0)&&(k==0)&&(l==0)&&(m==0)&&(t==20))
    {
      digitalWrite(47,HIGH);
    }
}

void zs()
{ Serial.print( analogRead(A2) );
  Serial.println("");
if((l==8)&&(m==0))
    {
    digitalWrite(51,LOW);  
    }
}
//manual contor the light
void dkg()
{  
   Serial.print( analogRead(A3) );
   Serial.println("");
  if((analogRead(kg)>200)&&(( ( 120 ) < ( analogRead(A3) ) )))
   {
     delay(20);
     if((analogRead(kg)>200)&&( ( 120 ) < ( analogRead(A3) ) ))
     { cs++; 
      digitalWrite(49,HIGH);
      if(cs==3)
      {
       digitalWrite(49,LOW);
        cs=1; 
      }
       while((analogRead(kg)>200)&&( ( 120 ) < ( analogRead(A3) ) ));
     }
   }
}
void jishi()
{
 if((flag == 1)||(flag==2))//timing mode 
    {
      unsigned long currentMillis=millis();//The current operating time
      if(currentMillis - previousMillis >= INTERVAL)
      {   t++;
         if(t==60)
         {
          n++;
          t=0;
          } 
        previousMillis=currentMillis;
         if(n==10)
        {
          k++;
          n=0;
          if(k==6)
          {
          l++;
          k=0;
           if((m==2)&&(l==4))
          {  n=0;
             k=0;
             l=0;
             m=0;                                                                   
          } 
          
          if(l==10)
          {
          m++;
          l=0;
         
          }
          }
        }
         
      }
    }
}