Vehicle Tracking System

Vehicle Tracking System Using Gps Modem:

This GPS based vehicle tracking system based on the arduino using global positioning system (GPS) and global system for mobile communication (GSM).

Project Description:

This is a two-way GPS communication system wherein communication is done in both ways with GPS satellites. This project uses only one GPS device and two-way communication is achieved using a GSM modem. GSM modem with a SIM card used here implements the same communication technique as in a regular cellphone.The system can be mounted in your vehicle in a hidden or suitable compartment. After this installation, you can easily track your vehicle using your mobile phone by dialling the mobile number of the SIM attached to the GSM modem. When you want then You will get the location of the vehicle in the form of an SMS on your mobile phone.

Component Used:

a) GPS Module:

GPS modules typically put out a series of standard strings of information, under something called the National Marine Electronics Association (NMEA) protocol.

b) GSM MODULE (SIM-900):

This is a GSM/GPRS-compatible Quad-band cell phone, which works on a frequency of 850/900/1800/1900MHz and which can be used not only to access the Internet, but also for oral communication (provided that it is connected to a microphone and a small loud speaker) and for SMSs. Externally, it looks like a big package (0.94 inches x 0.94 inches x 0.12 inches) with L-shaped contacts on four sides so that they can be soldered both on the side and at the bottom. Internally, the module is managed by an AMR926EJ-S processor, which controls phone communication, data communication (through an integrated TCP/IP stack), and (through an UART and a TTL serial interface) the communication with the circuit interfaced with the cell phone itself. The processor is also in charge of a SIM card (3 or 1,8 V) which needs to be attached to the outer wall of the module. In addition, the GSM900 device integrates an analog interface, an A/D converter, an RTC, an SPI bus, an I²C, and a PWM module. The radio section is GSM phase 2/2+ compatible and is either class 4 (2 W) at 850/ 900 MHz or class 1 (1 W) at 1800/1900 MHz. The TTL serial interface is in charge not only of communicating all the data relative to the SMS already received and those that come in during TCP/IP sessions in GPRS (the data-rate is determined by GPRS class 10: max. 85,6 kbps), but also of receiving the circuit commands (in our case, coming from the PIC governing the remote control) that can be either AT standard or AT-enhanced SIMCom type. The module is supplied with continuous energy (between 3.4 and 4.5 V) and absorbs a maximum of 0.8 A during transmission. Figure is given below.

c) ARDUINO UNO:

Arduino/Genuino Uno is a microcontroller board based on the ATmega328P (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header and a reset button. Figure is given below.

Applications of Project

1) You can locate your stolen vehicle easily using your mobile (gsm).

2) It can be used for trucks carrying valuable goods, to keep track of the status of delivery and location of the truck at all times.

3) You can easily install it in any vehicle such as cars, boats and motorbikes. An SMS will inform your vehicle position.

Code of Project:

#include<LiquidCrystal.h>

LiquidCrystal lcd(7, 6, 5, 4, 3, 2);

#include <SoftwareSerial.h>

SoftwareSerial gps(10,11); // RX, TX

//String str="";

char str[70];

String gpsString="";

char *test="$GPGGA";

String latitude="No Range      ";

String longitude="No Range     ";

int temp=0,i;

boolean gps_status=0;

void setup()

{

  lcd.begin(16,2);

  Serial.begin(9600);

  gps.begin(9600);

  lcd.print("Vehicle Tracking");

  lcd.setCursor(0,1);

  lcd.print("System using gps");

  delay(2000);

  gsm_init();

  lcd.clear();

  Serial.println("AT+CNMI=2,2,0,0,0");

  lcd.print("GPS Initializing");

  lcd.setCursor(0,1);

  lcd.print("GPS not in Range");

  get_gps();

  delay(2000);

  lcd.clear();

  lcd.print("GPS Range Found");

  lcd.setCursor(0,1);

  lcd.print("GPS is Ready");

  delay(2000);

  lcd.clear();

  lcd.print("System Ready");

  temp=0;

}

void loop()

{

  serialEvent();

  if(temp)

  {

    get_gps();

    tracking();

  }

}

void serialEvent()

{

  while(Serial.available())

  {

    if(Serial.find("Track Vehicle"))

    {

      temp=1;

      break;

    }

    else

    temp=0;

  }

}

void gpsEvent()

{

  gpsString="";

  while(1)

  {

   while (gps.available()>0)            //checking serial data from GPS

   {

    char inChar = (char)gps.read();

     gpsString+= inChar;                    //store data from GPS into gpsString

     i++;

     if (i < 7)                     

     {

      if(gpsString[i-1] != test[i-1])         //checking for $GPGGA sentence

      {

        i=0;

        gpsString="";

      }

     }

    if(inChar=='\r')

    {

     if(i>65)

     {

       gps_status=1;

       break;

     }

     else

     {

       i=0;

     }

    }

  }

   if(gps_status)

    break;

  }

}

void gsm_init()

{

  lcd.clear();

  lcd.print("Finding Module..");

  boolean at_flag=1;

  while(at_flag)

  {

    Serial.println("AT");

    while(Serial.available()>0)

    {

      if(Serial.find("OK"))

      at_flag=0;

    }

   

    delay(1000);

  }

  lcd.clear();

  lcd.print("Module Connected..");

  delay(1000);

  lcd.clear();

  lcd.print("Disabling ECHO");

  boolean echo_flag=1;

  while(echo_flag)

  {

    Serial.println("ATE0");

    while(Serial.available()>0)

    {

      if(Serial.find("OK"))

      echo_flag=0;

    }

    delay(1000);

  }

  lcd.clear();

  lcd.print("Echo OFF");

  delay(1000);

  lcd.clear();

  lcd.print("Finding Network..");

  boolean net_flag=1;

  while(net_flag)

  {

    Serial.println("AT+CPIN?");

    while(Serial.available()>0)

    {

      if(Serial.find("+CPIN: READY"))

      net_flag=0;

    }

    delay(1000);

  }

  lcd.clear();

  lcd.print("Network Found..");

  delay(1000);

  lcd.clear();

}

void get_gps()

{

   gps_status=0;

   int x=0;

   while(gps_status==0)

   {

    gpsEvent();

    int str_lenth=i;

    latitude="";

    longitude="";

    int comma=0;

    while(x<str_lenth)

    {

      if(gpsString[x]==',')

      comma++;

      if(comma==2)       

      latitude+=gpsString[x+1];    

      else if(comma==4)       

      longitude+=gpsString[x+1];

      x++;

    }

    int l1=latitude.length();

    latitude[l1-1]=' ';

    l1=longitude.length();

    longitude[l1-1]=' ';

    lcd.clear();

    lcd.print("Lat:");

    lcd.print(latitude);

    lcd.setCursor(0,1);

    lcd.print("Long:");

    lcd.print(longitude);

    i=0;x=0;

    str_lenth=0;

    delay(2000);

   }

}

void init_sms()

{

  Serial.println("AT+CMGF=1");

  delay(400);

  Serial.println("AT+CMGS=\"+9100000000\"");   // you have enter your mobile no.

  delay(400);

}

void send_data(String message)

{

  Serial.println(message);

  delay(200);

}

void send_sms()

{

  Serial.write(26);

}

void lcd_status()

{

  lcd.clear();

  lcd.print("Message Sent");

  delay(2000);

  lcd.clear();

  lcd.print("System Ready");

  return;

}

void tracking()

{

    init_sms();

    send_data("Vehicle Tracking Alert msg:");

    send_data("Your Vehicle Current Location:");

    Serial.print("Latitude:");

    send_data(latitude);

    Serial.print("Longitude:");

    send_data(longitude);

    send_data("Thank you");

    send_sms();

    delay(2000);

    lcd_status();

}