vehicle tracking system using gsm and gps

REAL TIME VEHICLE TRACKING SYSTEMUsing GPS and GSM

230 to 12 VStep Down Transformer

AT89S52µc

MAX232

GSM Modem GPS Modem

16x2 LCD Display

Relay

Block Diagram:

Power Supply

Transformer(12-0-12)V :i) Step

down ii) 0-9V

with 500mARectifier:=> Bridge Rectifier

=> Bidirectional to unidirectional

Voltage Regulator: 7805 for 5V constant DC

Filter: => Capacitor of 1000µF and 25/50V

AT89S52 Microcontroller:

AT89S52

Features:o Compatibility with the MCS 51 familyo 8-bit CPU frequency up to 33MHz;o RAM: 256 Byteso Flash memory: 8K Byteso 3 timers / counters of 16 bits;o Two data pointerso 1 serial port (full duplex UART)o supports up to 10 000 rewriteso contains the oscillator;o Short programming time.

GPS and GSM

GPS

Þ To Find location by using Latitude and Longitude data

Why we use GPS ?

Features of GPS: 24 Satellites at different orbitsRevolve around Earth twice a day

For a 2D location, 3 GPS Satellites are used

For a 3D location, more than 3 Satellites are used

How it Works ?

TriangulationAugmentation

A GPS Signal contains three different bits of information(1).Pseudo random code

(2).Ephemeris data

(3).Almanac data

THE SIGNAL

BASIC CONCEPTS OF GPS Receivers require clear line-of-sight; thus, they will not work indoors or

where tall objects obscure the sky

GSM

IC MAX232: • MAX232 IC is used to convert the TTL/CMOS logic levels to RS232 logic levels during serial communication of microcontrollers with PC

• The controller operates at TTL logic level (0-5V)

• whereas the serial communication in PC works on RS232 standards (-25 V to + 25V)

Schematic Diagram

APPLICATIONS: Stolen vehicle recovery . Field service management. It is used for food delivery and car rental companies.

ADVANTAGES: It provides more security than other system. From the remote place we can access the system.

ThankYou