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Nov 29, 2013 (3 years and 8 months ago)

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Electronic Technologies
Integrative Project (TE
2007)

Electronic Technologies
Integrative Project (TE
2007)dsf

dfs




2013

Equipo:

Alan Fermín Lozano Pérez
A01220937

Alejandra Ornelas Barajas A01220041

Carla Amaya Martínez
A01220308

Carlos Ignacio García García A01221214

Ricardo Rey Díez
A01130574




2013

Equipo:

Alan Fermín Lozano Pérez
A01220937

Alejandra Ornelas Barajas A01220041

Carla Amaya Martínez
A01220308

Carlos Ignacio García García

A01221214

Ricardo Rey Díez
A01130574




2013


TEAM:

Oscar Jahaziel

A01132686

Miguel
Alvarado

A01222725

Pamela
Ibáñez

A00803489

Rodrigo Navarro

A01221761

Enrique
Espinosa





Electronic Technologies
Integrative Project (TE 2007)

First Partial Deliverable


Electronic Technologies Integrative Project

Page

2



Contents

1.

Purpose and Scope

................................
................................
................................
......................

3

1.1.

Document Organization

................................
................................
................................
......

3

2.

Identifying Needs

................................
................................
................................
........................

5

3.

Requirements and Specifications

................................
................................
................................

5

4.

Proposed Solutions
................................
................................
................................
......................

6

5.

Basic System Description

................................
................................
................................
............

6

6.

Hardware Block Diagram

................................
................................
................................
.............

7

7.

Risky Elements

................................
................................
................................
.............................

9

8.

Initial Investigation on Key Components

................................
................................
..................

10

9.

Market Study

................................
................................
................................
.............................

11

10.

Planning

................................
................................
................................
................................
.....

12

11. Ref
erences

................................
................................
................................
................................
..

13









Electronic Technologies Integrative Project

Page

3


1.

Purpose and Scope


This document consists in the material we delivered for our first partial.
For our project we
choose to create a device
that is capable of alerting the user i
f a personal object (book, bag,
phone, wallet, etc) is missing when he is going out of home or when he is arriving. The difference
between our device and the existing product is that ours can be applied to multiple ite
ms and not
only one with a friendly user interface that will permit the user to configure different options from
the device (amount of items, register new item, etc).

This deliverable consists in a basic description of the system, a block diagram, a study
of
risky elements, including components that may be difficult to get and
theoretical

elements we
need to learn
, a research of key components and
a market study that justi
fies why we chose this
project.


1.1.

Document Organization


Section 1

Purpose & Scope

Incl
udes a brief description of the document and a presentation of
the following sections.

Section 2

Identifying Needs

In this section we present the problem that we want to solve with our
project. This is the justification of the project.

Section 3

Requirements and
Specifications

In this section we present the requirements and specifications of the
project that we need to meet.

Section 4

Proposed
Solutions

In this section we present some of the solutions that already exist in the
market. Technologi
cal and no tech solutions as well.

Section 5


Basic System
Description

In this section we point the most important elements in our
project and a brief description of the device.

Section
6

Block Diagram

In this section we describe each one of the blocks that we need
for our system and how they interact between them.


Electronic Technologies Integrative Project

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4


Section 7

Risky Elements

In this section we present the research on components difficult to
find and theory aspects we need to acquire in
order to finish our
Project.


Section
8

Research on key
components

In this section we discuss all the components that are present in our
project and why we chose those models.


Section 9


Market Study

In this section we justify why we chose this
Project, why we decided
to take the readings of the eye movement and how it solves an
important proble
m, therefore creating value for customers.


Section
10
Planning

In this section we present the planning for the project. A Gantt chart is
presented here.















Electronic Technologies Integrative Project

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5



2.

Identifying Needs

Nowadays most of the people have so many things to do and so many things to think about.
So, it’s kind of common to forget something important inside the house. The sensation of driving
to a meeting and to know that you forgot something is indescribable. H
owever there are many
options to solve this problem.
For example, an alarm reminder i
t helps by you making a list of all
the things don’t want to forget the next day and putting them in a reminder. But one of the many
disadvantages this method has is that
you will have to put one reminder per object and the alarm
will ring every 2 seconds to remind you. So, if you don’t want to forget your wallet, cellphone or
purse we have another solution that will make your life easier. What if you just have to download
an application in your smartphone and put there the things you can’t forget the next morning?

3.

Requirements and Specifications

Requirements:



We require that the user can wirelessly configure the tracking of their different objects.



The system should be able to wirelessly keep track of
the user items.



We require an interface in which the user can manage their tracked items.



We need a Processing Unit that keeps the track of every item.



The user must be warned about forgetting or missin
g an important item when leaving
their house.

Specifications:



The user will manage the tracking of the items through Bluetooth, which is already
installed on their phones or tablets.



The system will keep track of the user items through the use of RFID Tech
nology.

o

The door of the user will be equipped with an RF reader.



This reader will be used with RFID tags to achieve tracking of items

o

The items that the user desire to track by the system will be equipped with an
unobtrusive RFID tag.



This tag will contain

a unique identification code that the system can use
to keep track of the items.



On the phones or tablets of the users, an android application will serve as an interface
with the user and the system.

o

The user will be able to add new item tags and manage t
he existing ones.



A PIC18F4620 will be used to manage the control over the system.



Through Bluetooth, the user will be advertised on their paired devices that they are
leaving a tracked object in home, or that they returned home without certain item.


Electronic Technologies Integrative Project

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6



4.

Proposed Solutions


We found that there are not
many

solutions to solve this problem. We found a device that you
can take with you wherever you want. This device is called “Anti
-
lost Alarm” so you can attach the
transmitter to something that you don’t want

to lose. The device comes with a receiver module
that vibrates when the transmitter is inside the

range or you can configure the receiver according
to the manufacturer. It also used RFID for this device and you can get this product for $20.00 USD.
After d
oing some research about this product we found that it’s a poor quality device and the
disadvantage is that you can only track one object at a time. The advantage is that is low cost and
you can move it around.


Anti
-
lost Alarm device.




5.

Basic System
Description


Our project is going to be a system capable of detecting if the user is missing a

personal object
when he is going
out of
home. The object will be

previously registe
red in the memory of the
system and if an object is missing the user will be a
lerted by the device by different means.

The
user will be able to register any item that he wants by placing a RFID tag to the item

and using a
smartphone
. With a RFID reader the device w
+
ill be able to scan multiple tags in order to detect
the missing ite
ms.

All the code
s

from the objects will be stored into the eeprom memory of the
microcontroller.


Electronic Technologies Integrative Project

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7


Our system will have two inputs; a RFID reader and a mobile phone. The first one will be used to
scan the items that the user have with him. This will work by

placing RFID tags on different items
and each one of these tags will have a code that will differentiate the objects between them. The
mobile phone will be used to create new list of items that
the user wants to carry with him and
will be also used to reg
ister a new RFID tag.

The device will have two different outputs, a Bluetooth transmitter that will communicate with the
mobile phone to send the alerts, so the cell
-
phone will be used also as an output

to the user
. One
of the critical points of the proje
ct is to connect different phones to the Bluetooth module so
different users can receive the alerts in the phone. If we don’t manage to accomplish this task we
will need to work on different solutions for this. One of them is to include a GSM modem device
to
send messages to each one of the users or to implement an audio module that will work as an
alarm. The audio module will be able to “speak” to the user by sending pre
-
recorded phrases,
these phrases will be stored in an SD card and will be played with a

PWM each time the user is
missing something.

The device will be able to detect if the object was outside or inside the house and will advise the
user of this, so the user doesn’t
need to search inside the house. An application for the
smartphone will be u
sed in order to control all the input data coming from the user (creating list,
calendars, register new item, etc).

We hope to create a device capable of reminding people about the objects that they forget so
they will never need to return from the job or
school for that important item. Solving this problem
that may happen to every person


6.

Hardware Block Diagram


As we mentioned before our systems will work with different inputs and outputs, according to
this we will have different modules. The core of th
e system is going to be the master
microcontroller a PIC18F4620

that will be in charge of controlling the RFID module and will store
the codes of the different tags into the eeprom memory. The MCU will be in charge of detecting if
an item that is registere
d is missing. The Bluetooth module is going to be in charge of sending
information to the phone if the RFID tag code is not in the memory and will receive data as well if
the user is using the Android App.



Electronic Technologies Integrative Project

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8



Block diagram of the system, divided in five modules.



In the side of the user, the RFID tags are to be placed in the items that the user desire.
These tags are going to provide the information necessary to differentiate the objects between
them. The
mobile phone in addition with an application is also part of the user interface capable
of introducing or receiving data, depending on the function of the MCU.

The application is going to take part of the development of the project and is going to be criti
cal
for the success of it.

In relation to the power supply, we are not going to implement a portable
device because the RFID module needs to be on all the time to search if a RFID tag is available. Of
course we need to take care of the power in order to co
nsume the proper amount of energy.


Electronic Technologies Integrative Project

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9



B
lock diagram of the system.



7.

Risky Elements


On our first approach to the problem, we can identify several difficulties to solve.

One of the most critical points to address is the management of multiple users with mu
ltiple
Bluetooth devices.

Our current understanding of the Bluetooth pairing is that it can only pair with a single device. If
the only method of communicating with the users cellphones is through the Bluetooth,
notification on several devices would cause
a problem unless Bluetooth session handling is
designed.

Android application development is also a key factor on our project. This is because the
configuration environment for the user
, this

will be based entirely on the android application. The

Electronic Technologies Integrative Project

Page

10


applicatio
n should be robust and intuitive enough so that the user can effectively manage their
tags with several options for each tag.

Another issue to solve is the ability to effectively read multiple tags in a short time period. This
could be achieved by upgradin
g the high frequency RFID reader that we already
have

or to
upgrade to an ultra
-
high frequency RFID reader.

A tricky factor to consider is the possible combinations that the user will make on the tracking of
their tags, it is very important for the system
to make reliable status tracking of the tags.

We need to identify if the tag was outside or inside the house before is scanned, so we can alert
the user if the object was lost outside the place.


8.

Initial Investigation on Key Component
s


Our system depends
mainly on the following functions:



Detect if an

object is missing
when
the user

is entering or going out of the house.



Detecting multiple objects at the same time.



Send an alert to the user using audio or a cellphone as an output for messages.



App as user
interface for configuration.


To perform those tasks, we need the following components:



High Frequency RFID reader, able
t
o

read multiple
tags at the same time in order t
o
identify the different object
s

that the user

has registered previously.



RFID tags t
hat will provide a different code to identify the objects.



Bluetooth transmitter, able to communicate with any interface with serial communication.
As Bluetooth is a generic standard, it is adaptable to almost every microcontroller.



Microcontroller PIC18F4
620, this device is going to be the master and is going to be in
charge of the RFDI module and the Bluetooth transmitter.



Android App that will be in charge of the input data from the user
and also

as
an output if
an item is missing to give an alert.



I2C
protocol to communicate with the RFID reader.



UART protocol to communicate with the Bluetooth module.



Multiple mobile phones connected to the Bluetooth module. (Not same time)



Store Tag codes into the eeprom memory of the MCU



Electronic Technologies Integrative Project

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11


9.

Market Study

After some
research we didn’t manage to find information about this problem, but we know that
forgetting thing in the house is very common for some people. This happens mostly because they
are thinking in multiple things at the same time and because the lifestyle is
introducing a lot of
stress into the people.

Our device will be useful for all ages.

Kids / Teenagers:



Kids will never forget again the scien
ce project, the history homework or the book for
math.



If they are going to a sleep over, they will be able to be
reminded about their pajama,
sleeping bag or anything they could use.

University student:



A university student has a different schedule every day, so they will be able to make their
own schedule in their smartphone application to help them to never forget
a book again.

Adults:



It will remind you to not forget the bag for the gym.



The lunch for the kids, keys, wallet, purse, etc.



All the things you will need for

the meeting.


The approximate costs of our device will be the following ones:



PIC18F4620

$3.20



RFID Reader High
-
Frequency

$20.00



8

RFID Tags

$2.00



Bluetooth Module

$15.00



RFID Antenna

$3.00


For the previous part we need to think that the Bluetooth module will work with different devices.
Otherwise we will need to add the cost of the other modu
les proposed by the alternate solutions.
Another fact is the

cost of the RFID antenna
the one that we are going to used is a
low price
antenna that works with a high
-
frequency module and for now this is enough for the prototype.
For the real product is goi
ng to be necessary an ultra
-
high frequency RFID module and a bigger
antenna to read all the tags from the user and of course this is going to increase the price of the
device.


Electronic Technologies Integrative Project

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12




10.

Planning



Activities

to do and dates.




Gantt
chart
, Project.


Electronic Technologies Integrative Project

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13




Gantt
chart
.


11.
References

[1]

http://balakong.olx.com.my/electronic
-
anti
-
lost
-
alarm
-
for
-
child
-
pet
-
or
-
any
-
valuable
-
t
hings
-
you
-
dont
-
want
-
to
-
lose
-
iid
-
124181041

[2]

http://www.sonmicro.com/en/index.php?option=com_content&view=article&id=52&Itemid=29