Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Copy of 2014 Office Work

No description
by

so crazy

on 28 June 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Copy of 2014 Office Work

Testing
Theoretical
Concept

Project
Overview

Overall
System

Block Diagram
Demonstration

a
new security password

by using
sound’s waves

knock
Receiver
Unlock The
Cabinet
Knock Detecting Device
wireless Connection
Literature Survey
Searching components
Purchasing Components
Proposal
Design
Programming
Prototyping
Testing
Reporting

Try another

circuit

Find a way to connect between the

Transmitter & Receiver

Working on the

Receiver Side


Planning
Goal

Piezo Sensor
Arduino
Motor
NOTE
Office House
Application:
Secret
Security
Password
References
- Hoefer, S.
(2011, Januray 27)
. Projects:
Secret-Knock Gumball Machine
. Retrieved October 2, 2013, from Makezine: http://makezine.com/projects/Secret-Knock-Gumball-Machine/

-
Knock box
(it opens when you knock on it).
(2013, June 29)
. Retrieved October 2, 2013, from Instructables: http://www.instructables.com/id/Knock-box-it-opens-when-you-knock-on-it/?ALLSTEPS

- Projects:
Secret Knock Detecting Door.

(2010)
. Retrieved October 2, 2013, from Hack n Mod: http://hacknmod.com/hack/secret-knock-detecting-door-mechcanical-iris-awesome/

-
Secret Knock Detecting Door Lock
.
(2009, November 2)
. Retrieved October 2, 2013, from Grathio: http://grathio.com/2009/11/secret_knock_detecting_door_lock/



Done by:
- Basma Ali (H00154330)
- Safiya Mohamed (H00154249)
- Saeeda Husain (H00154690)
- Mariam Abdullah (H00154257)
Instructor :

Dr Saeed

Background
Hardware Used:
Xbee
Thank You for Attending
Any Questions?

Flow chart
Main program
Subroutines

5.0 Software

Divided into 2 sides:
Transmitter
Receiver

Important aspects:
Number of knocks
Location of the knocks


3.0 Theoretical concept

Goal
Design a security system
Using knocks
Provides solutions to the security problems

Application
House
Office



1.0 Project Overview

Voltage regulator
Zener diode
Limit the voltage to 5 Volt
Save equipment from burning


4.2 Signal conditioning

1.0 Project overview
2.0 Overall system
3.0 Theoretical concept
4.0 Block diagram
5.0 Software
6.0 Test
7.0 Demonstration


Outline

Amplifier
Using non-inverting amplifier
Amplification factor = 19
Ri =1K
Rf =18K


4.2 Signal conditioning

Vin

4.2 Signal conditioning

Play tones or detect tones
Converts pressure to voltage
Change structure of the crystal layer


4.1 Piezo sensor

Mathematical concept
Evaluating distance
Considering Area under the curves
Taking ratios
Finding mean and standard deviation


3.0 Theoretical concept

Software used
Arduino Software
Matlab



2.0 Overall system

Hardware used
Detecting device (Piezo sensor)
Arduino UNO
Motor
Xbee



2.0 Overall system

Communication device
XBEE shield
Communication device (XBEE)
Output power = 60mW
Coverage distance = 1 mile (1500 m)

Servo Motor


4.3 Xbee

Background
Knocking on a table
Unlock a storage box
Wireless communication


1.0 Project Overview

700µs - 800µs

2300µs - 2400µs

1500µs

Test the stability of the knock’s ratio
Test the Knocks on three locations
Servo motor
Time of specific angle
Can move 180 degree

6.0 Test

Test Piezo sensor
Test the circuit
Change values



6.0 Test

Sunday, June 15, 2014

Saeeda Hussain H00154690
Safiya Mohamed Al Hammadi H00154249
Basma Ali Al Hammadi H00154330
Mariam Abdulla Al Shehhi H00154257

Submitted to: Dr. Said Kafumbe

Engineering Project - EGEN N497

Secret Security Password

C=0.47µF

R=100KΩ

Vin

Low pass filter
Slows down decay of the signal
Smooth DC signal

Arduino UNO
Few numbers of inputs
Communication device can fit on perfectly


4.2 Signal conditioning

Full wave rectifier

Half wave rectifier

AC to DC converter
Half wave rectifier
Get rid of negative voltages


4.2 Signal conditioning

Demonstration

Software used:
Arduino Software
Matlab
Transmitter
Receiver
Divided into 2 sides:
Number of knocks
Location of the knocks
Important aspects:
Evaluating distance
Considering Area under the curves
Taking ratios
Finding mean and standard deviation
Mathematical concept:

- Test Piezo sensor
- Test the circuit
Change values

Full transcript