Assisting
Blind person using RFID Card and Readers
This Project
comprises of a Hardware mechanical model which is controlled by the electronic
circuits to assist a blind person. I.e., This mechanical model is attached with
the walking stick of the blind person.
The model will move automatically. This model helps the blind person to reach
the destination quickly. The model has a Master Control unit through which it
can identify the path. When the source and destination is selected the unit
will calculate the path using. The unit will then tell the user to move in
which direction. The movement of the user in ensured using a RFID proximity
cards and a reader. The reader will be placed on the unit and on encountering
of cards (Cards placed at each point) will tell the user has to take right or
left or straight through voice output.
An APR 9600 voice storage and retrival IC is used for this purpose.
The
unit will give alarm signal when it finds a Obstacle. This project is divided
into modules for better understanding of the circuit.
The
modules included in this project are
Pic
Embedded Microcontroller PIC 16F877
Battery
for Power Supply
RFID
Card Reader with cards
APR 9600 Voice Recording and Playback IC
Software Driver in Hitech ‘C’ Language.
Pic
Embedded Microcontroller (PIC 16F877):
This is the heart of the device
which is responsible for sensing the obstacles and producing voice Output.
RFID Card Reader with
Cards
A
RFID Card reader is fixed on the unit.
Cards will be placed on the path at regular intervals. When the unit encounters a card, it can sense
the point at which the unit is present through the unique code present in the
card.
APR 9600 Voice Recording and Play Back IC
This IC is a
Single Chip Voice Recording and Playback IC.
A Prerecorded Voice is Stored into the IC. It can be played again by the controller by
sending a control signal to the IC.
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