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ABSTRACT
The main objective of this project is to develop an embedded
system, which is a vehicleidentification system based on RFID. The
automatic vehicle identification facility delivers the
flexibility, scalability, and responsiveness that today's
generation needs. It provides accurate, up-
to-minute information, high- speed communication, and powerful
analysis features required to
make better decisions faster. The major potential comes from the
much acclaimed no line of
sight and simultaneous reading properties of RFID.
It is now widely recognized that real time vehicle information
will revolutionize the
control and logistical organization with significant vehicle
fleets. Radio Frequency
Identification (RFID) devices consist of tags and readers that
assist in the identification of
vehicles. Tags are the devices that give identity to the vehicle
and work like a wireless name
plate. It transmits the identity to readers which are placed at
strategic locations. Readers
pick up these signals and transmit them to the centralized data
servers from where the
information can be viewed or utilized anywhere.
BLOCK DIAGRAM:
The block diagram of the project RFID based Vehicle
Identification System
consists Microcontroller (P89V51RD2), MAX232, RFID Reader, RPS,
Crystal Oscillator, LCD
(Liquid Crystal Display), LED, Buzzer.
The block diagram depicts that the Microcontroller acquires the
input from the RFID
Reader and implement the logic as defined in the code which is
already dumped in
Microcontroller, the RFID Reader cannot communicate with
microcontroller directly but which
is done through an IC namely MAX232 which acts as an translator
RFID Reader voltage levels
(232 volts) and microcontroller voltage levels (0-5 volts).
The microcontroller needs power supply and clock cycles for
functioning. The power is
given to the Microcontroller using RPS (Regulated Power Supply)
Which consists of stepdown
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transformer, bridge rectifier, filter, voltage regulator.
Because of RPS is that how we get a
regulated 5V form the main supply which is 232V and 50Hz. The
clock cycles plays a very vital
role in the functioning of the microcontroller as the particular
arithmetic or logic circuits are
enabled using these clock cycles only. The clock cycles are
generated using Crystal Oscillator.
The Liquid Crystal Display (LCD) is a 16*2 display that means it
has 16columns and
2rows there are commands to control and manipulate the
controller. It requires a 8pin port as
data. The LED and Buzzer just require single pins from
microcontroller and can controlled by
allocating high or low.
Fig 2.1:Block Diagram
