The document describes a real-time vehicle tracking system utilizing GPS and GSM technologies, powered by an AT89S52 microcontroller. It details the components such as a step-down transformer, GPS and GSM modules, and the functionalities of the system for applications like stolen vehicle recovery and field service management. The system offers higher security and remote accessibility compared to other tracking systems.

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