new object locator
TRANSCRIPT
Object LocatorS.RUSHIKESHREDDY 2011EE10488
CH.VINAY REDDY 2011EE10449
PNVR KOUTILYA 2011EE10468
MVSK ANIRUDH 2011EE10458
P PRADEEP VARMA 2011EE10471
M LAXMAN 2011EE10457
Introduction And Objective
Finding a misplaced object is a tough task for
everyone and it is still tougher for blind or visually
impaired people who have little knowledge
about their surroundings.
Enabling Blind/visually impaired people to get
easy access to their frequently misplaced/lost
objects.
Previous work
Stick n find---Recently developed
mobile based application
Fetch ---- A research paper published in late 90s
It was the first in this Area
Motivation
Our project is inspired by the previous two works.
And we also received valuable inputs from a blind person whom we
interviewed at the beginning of the project.
Minutes of the Interview:
1) Mobile app better than separate device.
2) very frequently gets annoyed, if he cant find objects( 5 to 6 times a
day)
3) And he would feel comfortable if the device have an audio input
and talk back facility.
Difference? What is the need to implement something similar!!
Previous works did not target blind people i.e their application was
suited for general public but not blind/visually impaired.
We made use of swipe functions , to make it more user friendly for
them.
Accelerometer
BLOCK DIAGRAM
Mobile application
TAG 1
TAG 2
TAG 3
Bluetooth
communication
Bluetooth module
MicrocontrollerBuzzer
Accelerometer
Battery
TAG
Tag functioning
Any query from mobile app is received by Bluetooth module and
then sent to micro-controller.
Microcontroller processes the query and activates the buzzer
accordingly.
Until the tag is searched for, it stays in the standby mode.
RFDUINO
Found a microcontroller that has an inbuilt
Bluetooth module and which is very small.
The RFduino has a Nordic 32 bit ARM Cortex-M0
processor. It still runs the same, simple Arduino
code the UNO runs also run on the RFduino.
It has a wireless module incorporating Nordic’s
nRF51822 SoC.
Breadboard Circuit Diagram
Tag design
Phase-1: Bread board implementation
Breadboard Components:
Atmega168
16MHz Crystal
Bluetooth Module
Basic circuitry elements
Buzzer
Accelerometer
TAG design
Phase-2: PCB Design
Size: 2.5 cm *2.5 cm
Two layer design
Eagle software
Battery:• 90 mAH---rechargeable battery.
• battery backup : 18 days ( calculated assuming
buzzer gets activated 5 minutes a day).
Size of TAG:• 2.5cm* 2.5cm
App interface
App Interface
App Interface
STATUS OF THE PROJECT
WORK COMPLETED:
Breadboard implementation, PCB design and its implementation.
WORK NOT COMPLETED:
Debugging of hardware and software entities.
Scope of improvement in the project from the feedback of the users.
Future Scope
Reduction of size and cost of the Bluetooth module(using Nordic RF
module).
Implementation on other platforms.
Magnetic and Flexible tags.
Other innovative add-ons
INDIVIDUAL RESPONSIBILITIES
Names Research
papers/questionnaire
/basic design/add-
ons/ TAG design
Mobile
Application
design or
implementat
ion/
debugging
PCB
design /
compone-
nts to be
used
Hardware
circuit
design /
debugging
Bread board
implementat
ion
Ch Vinay Reddy
MVSK Anirudh
M Laxman
PNVR Koutilya
P Pradeep Varma
S Rushikesh Reddy
Thank you