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CHAPTER 3
3.0: METHODOLOGY
3.1 A brief description of the over speed monitoring system
Our system incorporates the use of GPS system and GSM technology to build a system that
monitors over speeding vehicles.
3.1.1Block diagram of the over speed monitoring system
GPS RECEIVER
MICROCONTROLLER
GSM INTERFACE
LCD DISPLAY
DATABASE
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Figure 6:Block diagram of the over speed monitoring system
OPERATION
The system employs a GPS receiver that obtains the speed of the vehicle, a microcontroller that
compares the speed with the set speed limit and an LCD display that shows the speed limit and
the current speed. If the speed of the vehicle exceeds the speedlimit, the LCD displays a
warning message andif the vehicle continues to over speed, through the use of a GSM shield,:-
a)
An SMS is sent to a police database that the vehicle has exceeded the speed limit.
b)
The owner of the vehicle will be alerted also through an SMS that his vehicle is over
speeding and also the amount they have to pay for the offence.
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