BLIND
PERSON NAVIGATION SYSTEM USING GPS & VOICE ANNOUNCEMENT
TECHNICAL
SPECIFICATIONS:
Title of the project : Blind
Person Navigation system using GPS & Voice announcement
Domain : Embedded Systems Design
Software : Embedded C, Keil, Proload
Microcontroller : AT89S52
Power Supply : +5V, 750mA Regulated Power Supply
Display : 16x2 LCD Display
Crystal : 11.0592MHz
Communication Device : GPS
Module
Applications : Automotives, Security,
Transportation, Logistics etc
ABSTRACT:
Helping Hands for the Blind was founded to address the concerns, and as a vital resource
for the blind. Helping Hands for the Blind is an organization
of blind people who want to help other blind people. It is a problem
solving organization. It is a guide that blind people can turn to in times of need. Helping a blind person through all the
paperwork can literally be a life saver. Another important form of assistance
is to provide a Mobility Instructor. When a blind person is new to an area, it
is important that they be shown how to get around by a trained and
knowledgeable instructor. There is a large and growing demand for this service.
The project aims in designing a system which is capable of alerting the user if
his destination is reached.
GPS
is the acronym for Global Positioning System. It is employed to find the
position, velocity and time of user is located on the earth. This information
is provided by the GPS receiver with the help of the data it receiver from
satellites.
Microcontroller is the heart of the device. It
stores the data of the current location which it receives from the GPS
receiver, if control button is pressed. Whenever user arrives to the saved
location it alerts through voice system present in the system. This device
helps the blind people in their journey. It helps him to get the alerts
regarding the arrival of his destination before few minutes.
This
device is designed to provide with a greater advantage producing voice based
announcement for the user i.e. the user gets the voice which pronounces his
destination location as and when it is about to reach the destination. Here
instead of the alerting sound the user can directly hear the location recorded
by the user itself.
This
project uses regulated 5V, 500mA power supply. Unregulated 12V DC is used for
relay. 7805 three terminal voltage regulator is used for voltage regulation.
Bridge type full wave rectifier is used to rectify the ac out put of secondary
of 230/12V step down transformer.
BLOCK DIAGRAM:
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