It is not a fully descriptive presentation but, it can help you to survive in urgency. Schematic is copied. It's just a ppt.

1. REAL TIME VEHICLE TRACKING SYSTEM
Using GPS and GSM

2. 230 to 12 V
Step Down
Transformer
AT89S52
µc
MAX232
GSM Modem GPS Modem
16x2 LCD Display
Relay
Block Diagram:

3. Power Supply

4. Transformer(12-0-12)V :
i) Step down
ii) 0-9V with 500mA
Rectifier:
=> Bridge Rectifier
=> Bidirectional to unidirectional

5. Voltage Regulator: 7805 for 5V constant DC
Filter:
=> Capacitor of 1000µF and 25/50V

6. AT89S52 Microcontroller:
A
T
8
9
S
5
2

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

8. GPS and GSM

9. GPS

10. To Find location by using Latitude and Longitude data
Why we use GPS ?
Features of GPS: 24 Satellites at different orbits
Revolve around Earth twice a day
For a 2D location, 3 GPS Satellites are used
For a 3D location, more than 3 Satellites are used

11. How it Works ?
Triangulation
Augmentation

12. A GPS Signal contains three different bits of information
(1).Pseudo random code
(2).Ephemeris data
(3).Almanac data
THE SIGNAL

13. BASIC CONCEPTS OF GPS
 Receivers require clear line-of-sight; thus, they will not work indoors or where
tall objects obscure the sky

14. GSM

18. 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)

19. Schematic Diagram

20. 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.

21. Thank
You