06-08-2013, 04:01 PM
DEVELOPMENT OF A GSM BASED VEHICLE SECURITY SYSTEM
DEVELOPMENT OF A GSM.pdf (Size: 106.2 KB / Downloads: 41)
ABSTRACT
The main aim of this project is to provide security to the vehicles. The system
automatically locks the vehicle as soon as it receives a predefined message from the user.
This project uses the wireless communication, GSM. To receive the messages
from the user mobile, we need a GSM modem. This modem will be interfaced to the
microcontroller through serial interface. The modem provides the communication
interface. It transports device protocols transparently over the network through a serial
interface. The GSM modem is a wireless modem that works with a GSM wireless
network. A wireless modem behaves like a dial-up modem. The main difference between
them is that a dial-up modem sends and receives data through a fixed telephone line
while a wireless modem sends and receives data through radio waves.
If the user is somewhere far from the vehicle and he wants to lock the vehicle
right from the place he is standing, he has to send a predefined message to the modem.
The controlling unit contains the microcontroller and the GSM modem interfaced to it.
The controlling unit will be fixed to the vehicle. The microcontroller continuously checks
whether it has received any message from the modem.
When the user sends the predefined message to the modem, the modem receives
the message and intimates the same to the microcontroller. The microcontroller retrieves
this message from the modem by issuing certain AT and T commands to the modem.
Thus, after receiving the message from the modem, the microcontroller automatically
locks the engine of the vehicle. The locking of the vehicle is shown by the relay in this
project.