The document outlines a project aimed at developing an advanced navigation tool for blind individuals, enhancing safety and usability compared to traditional white canes. It incorporates GSM and GPS technology for real-time location tracking and obstacle detection, providing auditory feedback to users. Overall, the project presents a low-cost solution that significantly improves navigation independence for visually impaired individuals.

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DEPARTMENT OF
TELECOMMUNICATION,PESIT
Under the Guidance of
Ms. Shruti P B
ASST. PROFESSOR
PROJECT TOPIC
PRESENTED BY:
ABHIJIT GHOSH 1PI13TE400

2.  Problem statement
 Motivation
 Introduction
 Block diagram
 Dspic 30f4013
 Importance of GSM
 Importance of GPS
 APR 9600
 Ultrasonic Sensor
 MAX 232
 Power supply
 Overview
 Software Architecture
 Algorithm
 Simulation circuit Diagram
 Advantages & limitation
 Conclusions
 References
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

3.  Personal guide for blind people.
 Security in travel is primary concern for every one.
 Accident spot can be detected.
 SMS can be received from the spot.
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

4.  For most of us, who are normal and healthy at least
can reach the destination somehow but for some
unfortunates like the blind people finding a
location becomes an extremely tedious process.
They will be in need of continuous help and
companionship till they reach their desired
destination.
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

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DEPARTMENT OF
TELECOMMUNICATION,PESIT
Introduction

6. Presently, blind people use a white stick
as a tool for directing them when they
move or walk.
Here, we develop a tool which can serve
with a blind people stick being more
efficient and helpful than the conventional
one.
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

7. D
S
P
I
C
3
0
F
4
0
1
3
16X2 LCD
Power Supply
MAX
232
GSM
Modem
GPS
Modem
MAX
232
Ultrasonic
Sensor
APR 9600
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DEPARTMENT OF
TELECOMMUNICATION,PESIT
Block Diagram

8.  High-Performance Modified RISC CPU:
 • Modified Harvard architecture
 • C compiler optimized instruction set architecture
 • Flexible addressing modes
 • 84 base instructions
 • 24-bit wide instructions, 16-bit wide data path
 • Up to 48 Kbytes on-chip Flash program space
 • 2 Kbytes of on-chip data RAM
 • 1 Kbyte of non-volatile data EEPROM
 • 16 x 16-bit working register array
 • Up to 30 MIPs operation:
 - DC to 40 MHz external clock input
 - 4 MHz-10 MHz oscillator input with
 PLL active (4x, 8x, 16x)
 • Up to 33 interrupt sources:
 - 8 user selectable priority levels
 - 3 external interrupt sources
 - 4 processor traps
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

9.  GSM (Global System for Mobile
communications).
 GSM is a digital cellular communications system.
 It is used for transmitting mobile voice and data
services.
 International roaming capability.
 Encryption capability for information security and
privacy
 Better security against fraud (through terminal
validation and user authentication)
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

10.  GPS (Global Positioning
System)
 GPS always transmits the data
 GPS Receiver gets the
location information from
satellites.
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

11.  Features
 • Single-chip, high-quality voice recording & playback
 solution
 - No external ICs required
 - Minimum external components
 • Non-volatile Flash memory technology
 - No battery backup required
 • User-Selectable messaging options
 - Random access of multiple fixed-duration messages
 - Sequential access of multiple variable-duration
 messages
 • User-friendly, easy-to-use operation
 - Programming & development systems not required
 - Level-activated recording & edge-activated play
 back switches
 • Low power consumption
 - Operating current: 25 mA typical
 - Standby current: 1mA typical
 - Automatic power-down
 • Chip Enable pin for simple message expansion
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

12.  Detect obstacle around 80cm.
 5v operating voltage.
 Operates between 25khz to
500khz.
 Sense at an angle of 120 degree
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

13.  MAX 232 is an dual driver/receiver
 It is used to convert the
TTL/CMOS logic levels to RS232
logic levels during serial
communication of microcontrollers
with PC.
RS-232 TTL Logic
-25V to-3V +2V to+5V High
+3V to+25V 0V to +0.8V Low
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

14. • We have used two 6 volt batteries (AS GPS,APR &
MICROCONTROLLER WORKS AT 5V).
•To get 12v power supply for GSM use the batteries in series.
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

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TELECOMMUNICATION,PESIT

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DEPARTMENT OF
TELECOMMUNICATION,PESIT

17.  Start the program.
 First initialize all the peripherals.
 Initialize USART and LCD.
 If obstacle is sensed then we get the voice output as 1,2.
 If the obstacle didn’t moved we will get the voice output in 3,4.
 If the toggle switch is high (accident occurred) at that time we
get the voice output at 5 and we receive the G.P.S location via
G.S.M.
 Stop the program.
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

18. Simulation circuit Diagram
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

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DEPARTMENT OF
TELECOMMUNICATION,PESIT

20.  The positioning is done in the form of latitude and longitude
along with the exact location of the place, by making use of
Google maps.
 The advantage of the system lies in the fact that it can prove to be
a very low cost solution to millions of blind person worldwide.
 The combination of various working units makes a real-time
system that monitors position of the user and provides dual
feedback making navigation more safe and secure.
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DEPARTMENT OF
TELECOMMUNICATION,PESIT

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TELECOMMUNICATION,PESIT 21
 GPS Talking For Blind People Ameer H. Morad Al Balqa Applied University, Faculty
Of Engineering Technology, Jordan , JOURNAL OF EMERGING TECHNOLOGIES IN
Web Intelligence, Vol. 2, No. 3, August 2010.
 Location Finding For Blind People Using Voice Navigation Stick Pranjali R Phirke,
Jayshree Pande, Prof. Archana Singh International Journal Of Engineering And
Technical Research (IJETR) ISSN: 2321-0869, Volume-3, Issue-1, January 2015 .
 Voice Operated Outdoor Navigation System For Visually Impaired Persons Somnath
Koley#1 , Ravi Mishra#2 1#M.E (Student), Electronics & Telecommunication, CSVTU
SSCET, Bhilai, India *2professor Electrical & Electronics Engg, CSVTU SSCET, Bhilai,
India . International Journal of Engineering Trends and Technology- Volume3Issue2-
2012
 Voice Based Guidance And Location Indication System For The Blind Using GSM,
GPS And Optical Device Indicator M. Naveen Kumar#1 , K. Usha*2 #M.E Student,
*Associate Professor Department Of ECE, M.V.S.R. Engineering College, Nadergul,
Andhra Pradesh, India. International Journal of Engineering Trends and Technology
(IJETT) - Volume4 Issue7- July 2013

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TELECOMMUNICATION,PESIT 2205/05/2016
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TELECOMMUNICATION,PESIT 22
Website:
 www.howstuffworks.com
 www.discovercircuits.com
 www.answers.com
 www.radiotronix.com
 www.WineYardProjects.com
Magazines:
 Electronics for you
 Electrikindia
 Let us Go Wireless
Text Books:
 Working with GSM Network By Cruis Leanardo
 Electrical Applications with GSM By Morris Hamington

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TELECOMMUNICATION,PESIT