PROJECT 4. ROOM OCCUPANCY MONITORING AND SECURITY SYSTEM (ARM MICROCONTROLLER)

                        

4.   ROOM OCCUPANCY MONITORING AND SECURITY SYSTEM

DESIGN

            Room occupancy monitoring systems are used to detect the movement detection in a room by PIR (passive infrared sensors). PIR motion detector used to control an outdoor, automatic light. A PIR-based motion detector is used to sense movement of people, animals, or other objects. They are commonly used in burglar alarms and automatically-activated lighting systems.

                                     

            If any movement is detected then microcontroller power ON necessary devices as controlled power delivery or if there is no movement in the room then it saves power. RTC is enabled for the controller as a result the circuit is designed to detect the night time and after the day time, the system automatically changes to a security system and in such a condition when a movement is detected in the room, security alert is ON and sends a alert message to a predetermined phone number.

ROOM_OCCUPANCY_MONITORING_AND_SECURITY_SYSTEM

CODE

 #include <LPC214x.h>

 #include<stdio.h>

 #include<string.h> 

int s=0,m=0,h=0,x,y,z,b=0;                

///////////////////////////////////////////      INTERRUPT SEC       ///////////////////////////////////////////////////////

 void FIQ_Handler()__fiq

{

            char ch[20];

           char a[]="AT\r",

                   a1[]="AT+CMGF=1\r",

                   a2[]="AT+CMGS=\"9961901607\"\r" ;

s=CTIME0&0X3F;

m=CTIME0&0X3F00;

m=m>>8;

h=CTIME0&0X1F0000;

h=h>>16;

sprintf(ch,"%d:%d:%d   \r",h,m,s);

puts(ch);

U1THR=0X0D;

while((U1LSR&0X40)==0);

///////////////////////////////////////////////////time controlled led////////////////////////////////////////////

b=IOPIN1;

if(b==0X80000000&&h==12&&m==55&&s==59)

{

IOSET0=0XFFFFFFFF;

//for(m=0;m<10;m++)

//for(n=0;n<500;n++);

} 

//////////////////////////////////////////////////////security alarm/////////////////////////////////////////////////

else if(h==12&&m==56&&s==2)

{

puts(a);

U0THR=0X0D;                                    

puts(a1);

U0THR=0X0D; 

puts(a2);

U0THR=0X0D;

}

else

{

IOCLR0=0XFFFFFFFF;

}

}

void main()

{

/////////////////////////////////////////////////////////////INT ENABLE//////////////////////////////////////

VICIntSelect=0X00002000;                                                            //RTC   

VICIntEnable=0X00002000;

//////////////////////////////////////////    UART1 ENABLE    ////////////////////////////////////////////

PINSEL0=0X00050005;

PINSEL1=0;

PINSEL2=0;

IODIR0=0XFFFFFFFF;

IODIR1=0X7FFFFFFF;

U1LCR=0X00000083;

U1DLL=0X00000061;

U1LCR=0X00000003;

/////////////////////////////////////////////////////////UART0 ENABLE//////////////////////////////////////////

U0LCR=0X00000083;

U0DLL=0X00000061;

U0LCR=0X00000003;

/////////////////////////////////////////////////////////         time setting           ////////////////////////////////////

      while((U0LSR&0X01)==0);

      h=(U0RBR-48)*10;

              HOUR=h;

      U0THR=(h/10)+48;

      while((U0LSR&0X40)==0);

      U0LSR=U0LSR&0X40;

      while((U0LSR&0X01)==0);

      x=U0RBR-48;

      h=h+x;

              HOUR=h;

      U0THR=x+48;

      while((U0LSR&0X40)==0);

      U0LSR=U0LSR&0X40;

      while((U0LSR&0X01)==0);

      m=(U0RBR-48)*10;

              MIN=m;

      U0THR=(m/10)+48;

      while((U0LSR&0X40)==0);

      U0LSR=U0LSR&0X40;

      while((U0LSR&0X01)==0);

      y=U0RBR-48;

      m=m+y;

              MIN=m;

      U0THR=y+48;

      while((U0LSR&0X40)==0);

      U0LSR=U0LSR&0X40;

      while((U0LSR&0X01)==0);

      s=(U0RBR-48)*10;

              SEC=s;

      U0THR=(s/10)+48;

      while((U0LSR&0X40)==0);

      U0LSR=U0LSR&0X40;

      while((U0LSR&0X01)==0);

      z=U0RBR-48;

      s=s+z;

              SEC=s;

      U0THR=z+48;

      while((U0LSR&0X40)==0);

      U0LSR=U0LSR&0X40;

      U0LSR=0X01; //CLEAR RECIEVE FLAG     

//////////////////////////////////////////////////////////RTC ENABLE//////////////////////////////////////////////

CCR=0x012;

CIIR=0x01;                 

CTIME0=0X00;

ILR=0x01;

CCR=0X11;

PREINT=0X16D;

PREFRAC=0X1B00;

while(1);

}