1. NAME : KUNUSOTH SANDEEP
ROLL NO : EE14B031
PROJECT : REAL-TIME VEHICLE LOCKING AND TRACKING SYSTEM
USING GSM AND GPS TECHNOLOGY-AN ANTI-THEFT SYSTEM.
ABSTRACT :
The safety of private and public vehicles is a major concern nowadays so having GPS
vehicle tracking system ensure their safety while travelling. This vehicle tracking system
can be found in consumers vehicles as a theft prevention and retrieval device.This
Project presents an automotive localization system using GPS and GSM-SMS services.
The system permits localization of the automobile and transmitting the position to the
owner on his mobile phone as a short message (SMS) at his request. The system can be
interconnected with the car alarm system and alert the owner on his mobile phone. This
tracking system is composed of a GPS receiver, Microcontroller and a GSM Modem.
GPS Receiver gets the location information from satellites in the form of latitude and
longitude.
The Microcontroller processes this information and this processed information is sent to
the user/owner using GSM modem. Microcontroller also gets the speed of the vehicle and
sends it to user/owner. The presented application is a low cost solution for automobile
position and status, very useful in case of car theft situations, for monitoring adolescent
drivers by their parents as well as in car tracking system applications. The proposed
solution can be used in other types of application, where the information needed is
requested rarely and at irregular period of time (when requested). This system is also can
be interfaced with Vehicle airbag system. This enable it to monitor the accident situations
and it can immediately alerts the police/ambulance service with the location of accident.

2. This project uses regulated 5V, 750mA power supply, 7805 three terminal voltage
regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify
the ac output of secondary of 230/12V step down transformer.
BLOCK DIAGRAM:
Micro
Controller
8051
L293D
GSM
GPS MAX
232
Power Supply 16X2 LCD
DC
MOTOR

3. LCD to Micro controller 8051 pin configuration
CIRCUIT DIAGRAM :

5. The following Code is used in this project:
#include<reg52.h>
#define lcd_data P0
#include<string.h>
void lcd_init(void);
void lcdcmd(unsigned char value);
void lcddata(unsigned char value);
void msgdisplay(unsigned char b[]);
void delay(unsigned int value);
void gsm_init(void);
void modem_send(unsigned char *);
void enter(void);
void Readmessage(void);
void sendbyte(unsigned char *);
void sendslot(unsigned char);
unsigned char dat[10];
unsigned char number[15];
unsigned char interruptno[13];
unsigned char LT[13];
unsigned char LG[13];
unsigned char SlotNo;
void gps(void);
sbit rl=P2^7;
sbit MTR0=P2^0;
sbit MTR1=P2^1;
sbit MTR2=P2^2;
sbit MTR3=P2^3;
bit MsgRead;
void comp(void);
void send_sms1(unsigned char *cmd1,unsigned char *cmd2,unsigned char
*ch1,unsigned char *ch2);
///////////////////////////////////////////////////////////////////////
/////////////////////////////
void main()

6. {
SCON = 0x50;
TMOD = 0x20;
TH1 = -3; ///////////////GSM 9600
TR1 = 1;
rl=0;
lcd_init(); lcd_init(); lcd_init();
lcdcmd(0x01);
lcdcmd(0x80);
msgdisplay("VEHICLE TRACKING");
delay(100);
lcdcmd(0xC0);
msgdisplay("USING GSM & GPS");
delay(200);
delay(200);delay(200);delay(200);delay(200);
MTR0=1;MTR1=0;
MTR2=1;MTR3=0;
rl=0;
gsm_init();
EA=1;
ES=1;
MsgRead=0;
while(1)
{
TH1=-3;
rl=0;
if(MsgRead)
{
EA=0;
Readmessage();
MsgRead=0;
EA=1;
ES=1;
}
}
}
//////////////////////////////////////////////////////////////////
void serialintr(void) interrupt 4
{
unsigned char i;
if(SBUF == '+')
{
EA=0;
ES=0;
RI=0;
for(i=0;i<11;i++)
{
while(!RI);
interruptno[i]=SBUF;
RI=0;
}
while(!RI);

7. SlotNo=SBUF;
RI=0;
MsgRead=1;
}
RI=0;
}
////////////////////////////////////////////////////////////////
void gsm_init(void)
{
rl=0;
modem_send("AT");
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("AT");
modem_send("ATE0");
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("ATE0");
modem_send("AT+CSMS=0");
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("AT+CSMS=0");
modem_send("AT+IPR=9600");
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("AT+IPR=9600");
modem_send("AT+CMGF=1");
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("AT+CMGF=1");
modem_send("AT&W");
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("AT&W");
modem_send("AT+CNMI=2,1,0,0,0");
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("AT+CNMI=2,1,0,0,0");
lcdcmd(0x01);lcdcmd(0x80);
modem_send("AT+CMGD=1");modem_send("AT+CMGD=2");modem_send("AT+CMGD=3")
;modem_send("AT+CMGD=4");
delay(200);delay(200);
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("GSM Initialized");
delay(200);delay(200);
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("WATING FOR SMS");
delay(200);delay(200);
}
///////////////////////////////////////////////////////////////////////
///
void modem_send(unsigned char *ch)
{
unsigned char cha;
while(*ch)
{
SBUF = *ch;
while(TI == 0);
TI = 0;
ch++;
}
enter();
TI = 0;
RI = 0;

8. while(1)
{
while(RI == 0);
RI = 0;
cha = SBUF;
if(cha == 'O');
while(RI == 0);
RI = 0;
cha = SBUF;
if(cha == 'K')
break;
SBUF = 'A';
while(TI == 0);
TI = 0;
SBUF = '/';
while(TI == 0);
TI = 0;
}
TI = 0;
RI = 0;
}
///////////////////////////////////////////////////////////////////////
///
void enter(void)
{
SBUF = 0x0a;
while(TI == 0);
TI = 0;
SBUF = 0x0d;
while(TI == 0);
TI = 0;
}
////////////////////////////////////////////////////////////////////////
void sendbyte(unsigned char *str)
{
EA=0;
while(*str!='0')
{
TI=0;
SBUF=(*str++);
while(!TI);
TI=0;
}
}
//////////////////////////////////////////////////////////////////
void sendslot(unsigned char slot)
{
EA=0;
TI=0;
SBUF=slot;
while(!TI);
TI=0;
}
//////////////////////////////////////////////////////////////
void Readmessage(void)
{
unsigned char *no;

9. unsigned char i,cha='X';
*no=SlotNo;
lcdcmd(0x01);lcdcmd(0x80);
delay(200);delay(200);
msgdisplay("Message Received");
delay(200);delay(200);delay(200);delay(200);
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("Slot No:");
msgdisplay(no);
delay(200);delay(200);delay(200);delay(200);delay(200);delay(200);
lcdcmd(0x01);
lcdcmd(0x80);
msgdisplay("Message Reading");
delay(200);delay(200);delay(200);delay(200);delay(200);delay(200);
sendbyte("AT+CMGR=");
sendslot(SlotNo);
enter();
while(SBUF!=':')
{
while(!RI);
RI=0;
}
while(SBUF!=',')
{
while(!RI);
RI=0;
}
while(SBUF!=',')
{
while(!RI);
RI=0;
}
for(i=0;i<4;i++)
{
while(!RI);
RI=0;
}
for(i=0;i<10;i++)
{
while(!RI);
number[i] = SBUF;
RI=0;
}
number[i]='0';
while(SBUF!='+')
{
while(!RI);
RI=0;
}
for(i=0;i<5;i++)
{
while(!RI);
RI=0;
}
for(i=0;i<5;i++)
{
while(!RI);

10. dat[i]=SBUF;
RI=0;
}
dat[i] = '0';
while(1)
{
while(RI == 0);
cha = SBUF;
RI = 0;
if(cha == 'O');
while(RI == 0);
cha = SBUF;
RI = 0;
if(cha=='K')
break;
}
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("Message Showing");
delay(200);delay(200);delay(200);delay(200);delay(200);delay(200);
lcdcmd(0x01);
lcdcmd(0x80);
msgdisplay(number);
delay(200);delay(200);delay(200);delay(200);
lcdcmd(0x01);
lcdcmd(0x80);
msgdisplay(dat);
delay(200);delay(200);delay(200);delay(200);delay(200);delay(200);
comp();
}
///////////////////////////////////////////////////////////////////////
///////////////////////
void send_sms1(unsigned char *cmd1,unsigned char *cmd2,unsigned char
*ch1,unsigned char *ch2)
{
unsigned char cha='X',P;
while(*cmd1)
{
RI=0;
TI=0;
SBUF=*cmd1;
while(TI==0);
TI=0;
RI=0;
cmd1++;
}
for(P=0;P<10;P++)
{
RI=0;
TI=0;
SBUF=number[P];
while(TI==0);
TI=0;
RI=0;
}
sendbyte(cmd2);
enter();
while(cha!='>')

11. {
while(RI==0);
cha=SBUF;
RI=0;
}
RI=0;
TI=0;
enter();
SBUF='V';while(TI==0);TI=0;
SBUF='E';while(TI==0);TI=0;
SBUF='H';while(TI==0);TI=0;
SBUF='I';while(TI==0);TI=0;
SBUF='C';while(TI==0);TI=0;
SBUF='L';while(TI==0);TI=0;
SBUF='E';while(TI==0);TI=0;
SBUF=' ';while(TI==0);TI=0;
SBUF=' ';while(TI==0);TI=0;
SBUF='P';while(TI==0);TI=0;
SBUF='O';while(TI==0);TI=0;
SBUF='S';while(TI==0);TI=0;
SBUF='I';while(TI==0);TI=0;
SBUF='T';while(TI==0);TI=0;
SBUF='I';while(TI==0);TI=0;
SBUF='O';while(TI==0);TI=0;
SBUF='N';while(TI==0);TI=0;
SBUF=' ';while(TI==0);TI=0;
SBUF=' ';while(TI==0);TI=0;
SBUF='A';while(TI==0);TI=0;
SBUF='T';while(TI==0);TI=0;
enter();
///////////////////////////////////////////////////////////////////////
/////
SBUF='#';
while(TI==0);
TI=0;
SBUF='L';
while(TI==0);
TI=0;
SBUF='A';
while(TI==0);
TI=0;
SBUF='T';
while(TI==0);
TI=0;
enter();
///////////////////////
for(P=0;P<11;P++)
{
RI=0;
TI=0;
SBUF=*ch1;
while(TI==0);
TI=0;
RI=0;
ch1++;

12. }
RI=0;
TI=0;
enter();
////////////////////////////////////////////////////////////
SBUF='#';
while(TI==0);
TI=0;
SBUF='L';
while(TI==0);
TI=0;
SBUF='N';
while(TI==0);
TI=0;
SBUF='G';
while(TI==0);
TI=0;
enter();
////////////////////////
for(P=0;P<12;P++)
{
RI=0;
TI=0;
SBUF=*ch2;
while(TI==0);
TI=0;
RI=0;
ch2++;
}
RI=0;
TI=0;
SBUF=0x1a;
while(TI==0);
TI=0;
RI=0;
}
/////////////////////////////////////////////////////////////
void comp(void)
{
if(!strcmp(dat,"TRACK"))
{
rl=1;
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("connecting to GPS");
gps();
}
else
{
lcdcmd(0x01); lcdcmd(0x80);
msgdisplay("Invalid command");
delay(200);delay(200);delay(200);delay(200);
delay(200);delay(200);
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("WATING FOR SMS");
}
}

13. /////////////////////////////////////////////////////////////////
void gps(void)
{
unsigned char gp='0',t;
rl=1;
TH1=-3; //////////////GPS 9600
while(gp!='$')
{
while(RI==0);
gp=SBUF;
RI=0;
}
gp='0';
while(gp!='G')
{
while(RI==0);
gp=SBUF;
RI=0;
}
gp='0';
while(gp!='P')
{
while(RI==0);
gp=SBUF;
RI=0;
}
gp='0';
while(gp!='R')
{
while(RI==0);
gp=SBUF;
RI=0;
}
gp='0';
while(gp!='M')
{
while(RI==0);
gp=SBUF;
RI=0;
}
gp='0';
while(gp!='C')
{
while(RI==0);
gp=SBUF;
RI=0;
}
while(RI==0);
RI=0;
for(t=0;t<13;t++)
{
while(RI==0);
RI=0;
}
for(t=0;t<11;t++)
{
while(RI==0);

14. LT[t]=SBUF;
RI=0;
}
LT[t]='0';
while(RI==0);
RI=0;
for(t=0;t<12;t++)
{
while(RI==0);
LG[t]=SBUF;
RI=0;
}
LG[t]='0';
for(t=0;t<11;t++)
{
while(RI==0);
RI=0;
}
for(t=0;t<6;t++)
{
while(RI==0);
RI=0;
}
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("LT:");
lcdcmd(0x83);
msgdisplay(LT);
lcdcmd(0xC0);
msgdisplay("LG:");
lcdcmd(0xC3);
msgdisplay(LG);
delay(200);delay(200);delay(200);
delay(200);delay(200);delay(200);
rl=0;TH1=-3;TI=0;RI=0;
send_sms1("AT+CMGS="",""",LT,LG);
delay(200);delay(200);delay(200);
modem_send("AT+CMGD=1");
TI=0;RI=0;
delay(200);delay(200);delay(200);
delay(200);delay(200);delay(200);
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("SMS SENT");
delay(200);delay(200);delay(200);
lcdcmd(0x01);lcdcmd(0x80);
msgdisplay("WATING FOR SMS");
delay(200);delay(200);delay(200);
}
///////////////////////////////////////////////////////////////////////
////
void lcd_init(void)
{
lcdcmd(0x28);
lcdcmd(0x28);
lcdcmd(0x28);
lcdcmd(0x0c);
lcdcmd(0x06);
lcdcmd(0x01);

15. lcdcmd(0X80);
delay(5);
}
///////////////////////////////////////////////////////////////////////
///
void lcdcmd(unsigned char value) // LCD COMMAND
{
lcd_data = ((value & 0xF0) | 0x08);
lcd_data = 0;
lcd_data = ((value << 4) | 0x08);
lcd_data = 0;
delay(5);
}
///////////////////////////////////////////////////////////////////////
//
void lcddata(unsigned char value)
{
lcd_data = ((value & 0xF0) | 0x0A);
lcd_data = 0;
lcd_data = ((value << 4) | 0x0A);
lcd_data = 0;
delay(5);
}
///////////////////////////////////////////////////////////////////////
//
void msgdisplay(unsigned char b[])
{
unsigned char s,count=0;
for(s=0;b[s]!='0';s++)
{
if(s==16)
lcdcmd(0xc0);
if(s==32)
lcdcmd(0x01);
lcddata(b[s]);
}
}
///////////////////////////////////////////////////////////////
void delay(unsigned int value)
{
unsigned int x,y;
for(x=0;x<100;x++)
for(y=0;y<value;y++);
}
///////////////////////////////////////////////////////////////////////