new object locator

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