Project Thesis (1)

7/25/2019 Project Thesis (1)

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CHAPTER-1

INTRODUCTION

1. Overview and issues involved:

In this project, we have developed an emergency application for the Android

mobile devices. This project provides the user with various facilities, which can be

availed by him/her via any android phone, which has the GPS facility. The

application provides various security and anti-theft features for the android device.

The application, in itself, is also very much secure and provides four level

securities. As power consumption has always been a major issue with the Android

mobiles, so we also kept in mind the power constraints of the device and tried to

make the application as efficient and light weight as possible.

Mobile platform and development environment Emergency Contact App is android

project. This application works as mobile app and help mobile users to contact

different departments in emergency situation. We will be taking this feature to be a

part of further improvements, which is covered, in the later part in the report. The

bottom line is that the main idea behind this project was to create an android

application that could be of great use in times of emergency. Our goal is to help set

an official guideline to assist Emergency Response Teams in their efforts to save

time and lives in the event of an emergency and help people in times of

emergency. There would also be functionalities that would allow quick access to

all relevant information that would be required at the times of an emergency. Thus,

with only one click on your screen, we can send SMS alerts to all your savedcontacts, call rescue workers. Thus, this application could be a LIFE SAVER in

times of a calamity.

1.1 Problem Definition

As discussed, this application would be very helpful in case of calamities where

every second counts, various situations wherein you can use this application:-

1. House is on fire



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2. Robbery

3. Car Crash/Accidents

4. Cases of Harassment

5. Domestic Abuse6. Missing Person (kidnapping)

7. Massacre and many more.

In the above situation everybody lose their self control. He will try to contact the

required rescue service for help, and this information of trouble should be reached

very quickly to all people who can help us. In this case, it is quite possible that you

are much tensed and are in a shock and you cannot communicate effectively to

explain your position, to avoid such a situation, we planned to contact each person

very quickly.

1.2 Proposed Solution

People with speech disorders can use this application since they are just few taps

away to communicate the problem. In this crazy world with amazing technology,

everyone is using tablets. People with android tablets can install our applicationand save their lives themselves without depending on others. The basic motive of

both E-contacts is that of sending out a distress signal, our app tries to reach to

your near ones. We feel that in times of emergency it would be really helpful if a

person could send a signal to his personal contacts in addition to alerting the

concerned authorities. The other major differentiating factor is that our app sends

out any nearby blood bank or ambulance services information to the emergency

contacts, which will be of great help in times of accidents.



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CHAPTER-2

LITERATURE SURVEY

2.1 Methodology:

2.1.1 GPS:

The Global Positioning System (GPS) is a U.S. owned utility. It provides users

with positioning, navigation, and timing (PNT) services. The Global Positioning

System (GPS) is actually a constellation of 27 Earth orbiting satellites (24 in

operation and three extras in case one fails).The orbits are arranged so that at

anytime, anywhere on Earth, there are at least four satellites "visible" in the sky. A

GPS receiver's job is to locate four or more of these satellites, figure out thedistance to each, and use this information to deduce its own location.

Working of GPS:

Global Positioning System satellites transmit signals to equipment on the ground.

GPS Receivers passively receive satellite signals; they do not transmit. GPS

receivers require an unobstructed view of the sky, so they are used only outdoors

and they often do not perform well within forested areas or near tall buildings.

GPS operations depend on a very accurate time reference, which is provided by

atomic clocks at the U.S. Naval Observatory. Each GPS satellite has atomic clocks

on board. A GPS receiver "knows" the location of the satellites, because that

information is included in satellite transmissions. By estimating how far away a

satellite is, the receiver also "knows" it is located somewhere on the surface of an

imaginary sphere centred at the satellite. It then determines the sizes of several

spheres, one for each satellite. The receiver is located where these spheres

intersect.

2.1.2 Latitude & Longitude:

Latitude- Lines parallel to equator called latitude.

Longitude-Lines parallel to prime meridian called longitude.



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Fig.2.1 Latitude and Longitude

Description of GPS

In fig. 2.1 shows the latitude and longitude of GPS system .The GPS system

currently has 31 active satellites in orbits inclined 55 degrees to the equator. The

satellites orbit about 20,000km from the earth's surface and make two orbits per

day. The orbits are designed so that there are always 6 satellites in view, from most

places on the earth.

GPS uses a lot of complex technology, but the concept is simple.

The GPS receiver gets a signal from each GPS satellite. The satellites transmit the

exact time the signals are sent. By subtracting the time the signal was transmitted

from the time it was received, the GPS can tell how far it is from each satellite.

The GPS receiver also knows the exact position in the sky of the satellites, at the

moment they sent their signals. So given the travel time of the GPS signals from

three satellites and their exact position in the sky, the GPS receiver can determine

your position in three dimensions - east, north and altitude.

There is a complication. To calculate the time the GPS signals took to arrive, the

GPS receiver needs to know the time very accurately. The GPS satellites have

atomic clocks that keep very precise time, but it's not feasible to equip a GPS

receiver with an atomic clock. However, if the GPS receiver uses the signal from a

fourth satellite it can solve an equation that lets it determine the exact time, without

needing an atomic clock.

If the GPS receiver is only able to get signals from 3 satellites, you can still get



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your position, but it will be less accurate. As we noted above, the GPS receiver

needs 4 satellites to work out your position in 3-dimensions. If only 3 satellites

are available, the GPS receiver can get an approximate position by making the

assumption that you are at mean sea level. If you really are at mean sea level, the position will be reasonably accurate. However if you are in the mountains, the 2-

D fix could be hundreds of metres off.

A modern GPS receiver will typically track all of the available satellites

simultaneously, but only a selection of them will be used to calculate your

position.

2.1.3 Android OS:

Android is an operating system for mobile devices such as Smartphone’s and

tablet Computers. It is developed by the Open Handset Alliance led by Google

.Android consists of a kernel based on the Linux kernel, with middleware,

libraries and APIs written in C and application software running on an

application framework which includes Java compatible libraries based on

Apache Harmony Android uses the Dalvik virtual machine with just In time

compilation to run compiled Java code. Android has a large community of

developers

Writing applications ("apps") that extend the functionality of the devices.

Developers write primarily in a customized version of Java. There are currently

more than 520,000 apps available for android apps can be downloaded from third

party sites or through online stores such as Android Market, the app store run by

Google.

2.1.4 SQLite:

SQLite is a software library that implements a self contained, server less, zero

configurations, transactional SQL database engine. SQLite is the most widely

deployed SQL database engine in the world. The source code for SQLite is in the

public domain.

2.1.5 Android Architecture

The following diagram shows the major components of the Android operating

system. Each section is described in more detail below



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.

Fig. 2.2 Android Architecture

2.1.6 Application Framework:

By providing an open development platform, Android offers developers the ability

to build extremely rich and innovative applications. Developers are free to take

advantage of the device hardware, access location information, run backgroundservices, set alarms, add notifications to the status bar, and much, much more.

Underlying all applications is a set of services and systems, including

1. A rich and extensible set of Views that can be used to build an application,

including lists, grids, text boxes, buttons, and even an embeddable web

browser.

2.

Content Providers that enable applications to access data from other

applications (such as Contacts), or to share their own data.3. A Resource Manager, providing access to non-code resources such as

localized strings, graphics, and layout files.

4. A Notification Manager that enables all applications to display custom alerts

in the status bar.

5.

An Activity Manager that manages the lifecycle of applications and provides

a common navigation backtracks.

2.1.7 Libraries:



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Android includes a set of C/C++ libraries used by various components of the

Android system.

These capabilities are exposed to developers through the Android application

framework. Some of the core libraries are listed below:

1.

System C library: a BSD-derived implementation of the standard C system

library (libc),tuned for embedded Linux-based devices.

2. Media Libraries-Based on Packet Video’s Open CORE; the libraries support

playback and recording of many popular audio and video formats, as well as static

image files, including MPEG4, H.264, MP3, AAC, AMR, JPG, and PNG.

3.

Surface Manager-Manages access to the display subsystem and seamlessly

composites 2D and 3D graphic layers from multiple applications.

4. Lib Web Core-a modern web browser engine which powers both the Android

browser and an embeddable web view

5. SGL-The underlying 2D graphics engine.

6. 3D libraries-An implementation based on OpenGL ES 1.0 APIs; the libraries

use either hardware 3D acceleration (where available) or the included, highly

optimized 3D software rasterizer.

1.

Free Type-Bitmap and vector font rendering.

2.SQLite-a powerful and lightweight relational database engine available to all

applications.

2.1.8 Android Runtime:

Android includes a set of core libraries that provides most of the functionality

available in the core libraries of the Java programming language. Every Android

application runs in its own process, with its own instance of the Dalvik virtual

machine. Dalvik has been written so that a device can run multiple VMs

efficiently. The Dalvik VM executes files in the Dalvik Executable (.dex) format

which is optimized for minimal memory footprint. The VM is register-based, and

runs classes compiled by a Java language compiler that have been transformed

into the .dex format by the included "dx" tool. The Dalvik VM relies on the Linux

kernel for underlying functionality such as threading and low-level memory

management.



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2.1.9 Linux Kernel:

Android relies on Linux version 2.6 for core system services such as security,

memory management, process management, network stack, and driver model. The

kernel also acts as an abstraction layer between the hardware and the rest of the

software stack.

2.2 Technologies and Tools used:

2.2.1 Android SDK:

The Android SDK provides the tools and APIs necessary to begin developing

applications on the Android platform using the Java programming language.

Features:

1.Application framework enabling reuse and eplacement of components.

2.Dalvik virtual machine optimized for mobile devices.

3.Integrated browser based on the open source WebKit engine.

4.Optimized graphics powered by a custom 2D graphics library; 3D graphics

5.Rich development environment including a device emulator, tools for debugging,

memory and performance profiling, and a plug-in for the Eclipse IDE.

2.2.2 Google Place API

The Google Places API Web Service is for use in server applications. If you're

building a client-side application, take a look at the Google Places API for Android

and the Places Library in the Google Maps JavaScript API.

The Google Places API Web Service is a service that returns information about places

— defined within this API as establishments, geographic locations, or prominent

points of interest — using HTTP requests.

API

The following place requests are available:

Place Searches return a list of places based on a user's location or search string.

Place Details requests return more detailed information about a specific Place,

including user reviews.

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/android/

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/javascript/

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/search

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/details

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/details

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/search





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Place Add allow you to supplement the data in Google's Places database with data

from your application.

Place Photos gives you access to the millions of Place related photos stored in

Google's Place database.

Place Autocomplete can be used to automatically fill in the name and/or address of a

place as you type.

Query Autocomplete can be used to provide a query prediction service for text-based

geographic searches, by returning suggested queries as you type.

Place Search

The Google Places API Web Service is for use in server applications. If you're

building a client-side application, take a look at the Google Places API for Android

and the Places Library in the Google Maps JavaScript API.

Note: The id and reference fields are deprecated as of June 24, 2014. They are replaced

by the new place ID, a textual identifier that uniquely identifies a place and can be

used to retrieve information about the place. The Google Places API Web Service

currently returns a place_id in all responses, and accepts a placeid in the Place Details

request or place_id in the Place Delete request. Soon after June 24, 2015, the API will

stop returning the id and reference fields in responses. Some time later, the API will no

longer accept the reference in requests. And provide user friendly functionality to the

user We recommend that you update your code to use the new place ID instead of id

and reference as soon as possible.

Nearby Search Requests

Earlier versions of the Places API referred to Nearby Search as Place Search.A

Nearby Search lets you search for places within a specified area. You can refine your

search request by supplying keywords or specifying the type of place you are

searching for.

A Nearby Search request is an HTTP URL of the following form:

https://maps.googleapis.com/maps/api/place/nearbysearch/output?parameters

where output may be either of the following values:

json (recommended) indicates output in JavaScript Object Notation (JSON)

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/add-place

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/photos

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/autocomplete

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/query



http://localhost/var/www/apps/conversion/tmp/scratch_7/places/place-id



http://localhost/var/www/apps/conversion/tmp/scratch_7/places/place-id



http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/query

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/autocomplete

http://localhost/var/www/apps/conversion/tmp/scratch_7/places/webservice/photos




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xml indicates output as XML

Certain parameters are required to initiate a Nearby Search request. As is standard in

URLs, all parameters are separated using the ampersand (&) character.

Required parameters

key — Your application's API key. This key identifies your application for purposes of

quota management and so that places added from your application are made

immediately available to your app. Visit the Google Developers Console to create an

API Project and obtain your key.

location — The latitude/longitude around which to retrieve place information. This

must be specified as latitude,longitude.

radius — Defines the distance (in meters) within which to return place results. The

maximum allowed radius is 50 000 meters. Note that radius must not be included if

rankby=distance (described under Optional parameters below) is specified.

If rankby=distance (described under Optional parameters below) is specified, then one or

more of keyword, name, or types is required..

http://localhost/var/www/apps/conversion/tmp/scratch_7/console/help/


https://console.developers.google.com/

https://console.developers.google.com/


http://localhost/var/www/apps/conversion/tmp/scratch_7/console/help/



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CHAPTER-3

ANALYSIS

3.1 Software Requirements:

Platform: Android

Front-end: XML

Back-end: java

Database: SQLite

Software: Android 2.3 Edition SDK, Eclipse Editor, Google place API

3.2 Hardware Requirements:

CPU: Pentium-4 Processor

Memory: Minimum 512 MB

Hard drive: 200 MB of free disk space

Device: any android based mobile phone which contain inbuilt GPS receiver

3.3 Use Case Model:

Fig.3.3 Use case model of Emergency Contact App



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3.4 Use Case Description:

In the above figure 2.2 there are following usecases used which are describe in

detail below

Medical:

Description:

This use case will help user when user needs any medical help.

Flow of event:

This use-case starts when user wants to get information about nearest hospital

and wants to call ambulance and get medical services.

Basic flow:

1. User will open application on mobile.

2. Then he will click on button medical, if GPS is not on mobile device then it

will ask

3. Then app will track hospital which is near to current location through GPS

tracking.

Special Requirements:

In the mobile device there should be network and GPS service.

Precondition: none

Post condition: user will be able to contact to hospital and will get medical

services.

Extension Point: none

Theft:

Description:

This use case will help user when user needs any police help.

Flow of event:

This use-case starts when user wants to get information about nearest police

station and wants to call police and get services.

Basic flow:



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2. Then he will click on button police, if GPS is not on mobile device then it will

ask

3.

Then app will track police station which is near to current location through GPStracking.



Precondition: none

Post condition: user will be able to contact to hospital and will get police services.

Fire:

Description:

This use case will help user when user needs any fire help.

Flow of event:

This use-case starts when user wants to get information about nearest fire station

and wants to call fire brigade and get fire services.

Basic flow:


2. Then he will click on button medical, if GPS is not on mobile device then it

will ask

3. Then app will track fire which is near to current location through GPS

tracking.



Precondition: none

Post condition: user will be able to contact to fire brigade and will get fire services.

Emergency:

Description:

This use case will help user when user needs any emergency help.

Flow of event:



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In this usecase the user will access and sent message to the friends whom numbers

are saved in the contact list.

Basic flow:


2. Then he will click on button friend, if GPS is not on mobile device then it will

ask

3. Then app will track fire which is near to current location through GPS

tracking.



Precondition: none

Post condition: user will be able to contact to friend and will get emergency

services.



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CHAPTER-4

DESIGN

4.1 Technology Selection

We used android technology in our project because of following advantages of

android

4.1.1 Low Investment & High ROI

Android comparatively has a low barrier to entry. Android provides freely its

Software Development Kit (SDK) to the developer community which minimizes

the development and licensing costs. The development costs can be divided into

three stages: Stage#1 – application development, Stage#2 – testing, and Stage#3 – hardware cost for testing and deploying the android mobile application.

4.1.2 Open Source

Get the open source advantage from licensing, royalty-free, and the best

technology framework offered by the Android community. The architecture of the

Android SDK is open-source which means you can actually interact with the

community for the upcoming expansions of android mobile application

development. This is what makes the Android mobile application development

platform very attractive for handset manufacturers & wireless operators, which

results in a faster development of Android based phones, and better opportunities

for developers to earn more. That’s the magic of Android.

4.1.3 Easy to Integrate

The entire platform is ready for customization. You can integrate and tweak the

mobile app according to your business need. Android is the best mobile platform

between the application and processes architecture. Most of the platforms allow

background processes helping you to integrate the apps.

4.1.4 Multiple Sales Channels

Unlike other mobile platforms, Android applications can be deployed in different

ways. You do not have to rely on a single market to distribute your applications.

You can use third-party application marketplace (especially in Google Android



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Market), but you can also form your own distribution and sales channel:

applications for vertical markets, to develop new application stores, and also place

it on your website. You build it, you publish it. With your choice of promotional

strategy, you can reach your end users through multiple channels.

4.1.5 Easy Adoption

Android applications are scripted in Java language with the help of a rich set of

libraries. Anyone can build Android applications with the knowledge of Java.

According to a recent survey, a lot of Java programmers find it easy to adopt and

script code for mobile applications in the Android OS. It is now very beneficial for

Java developers to transition the code script into a mobile application, and can also

implement android application development services in the app.



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Sequence diagram

Fig.4.2 Sequence Diagram of Emergency Contact App



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Description of sequence diagram:

Sequence diagram shows the flow of process which will happen on the runtime of

this mobile app. In this diagram

1.

Firstly opens the emergency contact mobile app.

2. After that initiate the GPS, Through He /She track the current location as well as near

hospital or police station or fire brigade.

3. Also search the emergency contact of a friend.

4. After searching location we can have contact of nearest services required .

5. User can generate call to emergency number.



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CHAPTER – 5

IMPLEMENTATION

5.1. Class Diagram

Fig.5.1 Class Diagram Of Emergency Contact App

5.2 Description :

5.2.1 Class: User/Victim

The User class includes all attribute of a User. This class will called all below

mentioned methods and classes because the user class will be interact and access

all other classes.

5.2.2 Class: Register :

The register class is useful for doing the registration by user . In this class user will

install the application in his device and register himself in our application for

accessing the various features from our application in emergency. The user will be

resister by calling register ().

5.2.3 Class: Police



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The police class includes all attributes of a particular police station. This class will

received a call from user in emergency and this class provide service to the user

by invoking police_service().

5.2.4.Class: Hospital

The hospital class includes all attribute of a particular hospital .This class will


by invoking hospital_service().

5.2.5 Class: Fire

The Fire class includes all attribute of a particular Fire brigade .This class will


by invoking Fire_service().

5.2.6 Class: Friend

The Friend class includes all attribute of a friend .This class will received a call

from user in emergency and this class provide help to the user by invoking help().



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Test 01 : Test case for first page

We have given 5 modules onto our screen

1. Ambulance: When the user click onto ambulance then he will switched on

another activity where a direct outgoing call will be held on 108.

2. Hospital: When the user click on that button he will switched on another activity

or screen called after clicking hospital

3. Friend: When the user click on friend button he will come onto setting inner

activity. here find location button it will show the current location of user and

when we click on setting button your exact location.

4. Police : When the user click on that button he will switched on another activity or

screen called after clicking Police...

5. Fire: When the user click on that button he will switched on another activity or

screen called after clicking Police...



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Test 02: After searching Places

When the hospital button pressed by user it will come onto this screen where

according to the current position of the user all near by hospitals list will be shown

according to the distance. Here all the places will be shown according to priority of

their distance from users current location.



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Test 03: After clicking specific hospital

After choosing one of the place from list user will come onto the singleplace

activity where all information related to mthat pl,ace will be shown .

1. Name: show the name of the hospital selected by the user.

2. Address: show the full address of that place/Hospital selected by user.

3. Phone: show the Contact no of that hospital.we have given two additional button:

CALL: when user press this button a call will be held onto contact number of that

particular hospital selected by user

SHOWONMAP: After clicking this button user will be switched on another activity

called ShowOnMap.



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Test 04: Show on map

ShowOnMap Activity/Screen will show the place onto the Google Map that is

selected by the user.

The map will also shown the distance of that place from the current location of the

user



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CHAPTER – 6

CONCLUSION

6.1 Conclusion

6.1.1 Advantages

1. Availability of rescue services will be quick and easy, thus with only one click

we can send SMS alert to all our saved contacts.

2. People with speech disorders can use this application since they are just few

taps away to communicate the problem.

3.

Our app sends out any nearby blood bank or ambulance services information

to the emergency contacts which will be of great help in times of accident.

4.

Identifying the exact location of the person who needs an emergency help

using the GPS.

5. Giving the best service in least time in emergency situation.

6.1.2 Limitation

1. The device internet connection should be on, otherwise it can not

search the suitable place that nearest from it in our case.

2. GPS should be enabled into the mobile device of user.

6.2 Future Scope

In conclusion, we hope our system will be useful for the society and saving

many lives in emergency cases, and we recommend the implementation of our

application will be in different platform for the mobile phone, also we recommend

that our application will be helpful to resolve many emergency problem in which

a common man get stuck.Our future work is providing our system mainly for sake

of humanity. The country will save many lives after using this system, so we hope

it will be implemented in near future in our country.





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APPENDIX

Test 06: call option



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Test 07: Error condition



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Test 08: Snapshot on clicking Friend



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Test 09: Contact list



Test 10: saving contacts

Documents

Project Thesis (1)