Presented by-

Panjwani Akshay(37)

Patil Khusboo(38)

Sharma Siddhant(45)

Bajaj Kiran(63)

Introduction

Switch from RFID to GPS system

Hardware

Software

Conclusion

• According to a survey, of the 37 million

across the globe, over 15 million

are from India.

• Normally blind people use white canes,

guide dogs, etc. to navigate

but they are of limited assistance.

• The proposed navigational aid uses voice

to indicate current location as well as the

neighbouring locations with directions.

• It also helps in obstacle detection

with the help of infrared sensor

Proposed RFID

System

RFID

• Tags were priced very high for long distance communication.

• They were useful only for indoor environment

• Better features are presently available in GPS

• An outdoor close environment would serve a better purpose for our project

GPS

• Android ‘Google Maps’ have a standard navigation for the sighted.

• However we cannot run a multitasking environment using Android OS.

*We are trying for the above*

AANDROIDPHONE

Filter Capacitors

Bridge Rectifiers

Voltage regulator 7805

MC-89s51

LCD Display 16*2 (with preset)

IR Sensor Module (with LED’s)

Ultrasonic sensor(Tx-Rx pair)

Relay driver IC ULN-2803

Buzzer

Vibrator Motor

BASCOM for 89s51

Android App

Navigation through the application

If A > 45 And A < 58 Then

Text = Text + Chr(a)

End If

If A = "m" Then

Dist = Mid(text , 1 , 3)

L = P1.0

R = P1.1

Upperline

Lcd "D:" ; Dist ; "(cm) " ; L ; " " ; R

Md = Val(dist)

If Md > 100 Then

P2.0 = 0

Elseif Md < 100 And Md > 75 Then

P2.0 = 1

Waitms 200

P2.0 = 0

Elseif Md < 75 And Md > 50 Then

P2.0 = 1

Waitms 250

Waitms 250

P2.0 = 0

Elseif Md < 50 And Md > 25 Then

P2.0 = 1

Wait 1

P2.0 = 0

If Md > 100 Then

P2.0 = 0

Elseif Md < 100 And Md > 75 Then

P2.0 = 1

Waitms 200

P2.0 = 0

Elseif Md < 75 And Md > 50 Then

P2.0 = 1

Waitms 250

Waitms 250

P2.0 = 0

Elseif Md < 50 And Md > 25 Then

P2.0 = 1

Wait 1

P2.0 = 0

Elseif Md < 25 Then

P2.0 = 1

End If

If L = 1 Then

P2.1 = 1

Waitms 250

P2.1 = 0

End If

If R = 1 Then

P2.1 = 1

Waitms 250

Waitms 250

P2.1 = 0

End If

Text = ""

End If

Loop

The algorithm further

guides the user to the

respective position on

GOOGLE MAP

application.

Shortcoming: Two

applications cannot

run simultaneously on

an Android O.S

*THE HELP OPTION*

THEORETICAL ASSUMPTION

PRACTICAL CONCLUSION

RFID is presently an area

where much development

cannot be expected w.r.t

navigation

Bluetooth interfacing for

transferring data from the

stick to the smart phone

can be used

GPS is better suited to meet

the requirements; it can be

made accessible to the blind

using our application .

It is difficult to read the data

on a smart phone

simultaneously because 2

apps cannot work on one

G.U.I. Hence a buzzer/

motor are temporarily added.