Done by group Goals, Almaha Academy for Girls under supervision from AL-Bairaq

1. AL-Bairaq
I am Discovering Materials
Smart Sensors
GOALS
Ghaya Al-Sulaiti Lamya Al-Derbesti
Farah Mamdouh Bashaer Al-Mana

2. Introduction
Activity 1: Evading Motion Detectors
Activity 2: Taking a Tour of Some Sensors
Activity 3: Making a Microphone
Activity 4: Exploring the Piezo Effect :Inside story
Activity 5: Measuring Piezoelectric or Piezoelectric
Response
Design Project: Design a coin counter
Project: Cavity Detector
Outline

3. A sensor is a device used to detect what is around it and the
changes that happen, then they give out a corresponding output
 For example:
A thermometer measures it’s surrounding environment then
processes the information and outputs a digital number.
Introduction

4.  The purpose of this activity:
Finding the perimeter of motion detectors.
 Conclusion:
The range of the sensor is approximately 12 feet long, at a
cone shape. It’s an infrared wave sensor .
Activity 1:
Invading Motion Detectors.

5.  The purpose of this activity:
Expanding our knowledge with sensors and what’s their input and output.
 We wrote the following results on a table:
Activity 2:
Taking a Tour of Some Sensors.

6. Activity 3
Making a Microphone
With substance Without substance
Flexible Rigid Flexible Rigid
• Purpose of this activity:
Learn how to make a microphone (using an amplifier and polymer) and
differentiate between the sounds with or without the substance.
Flick
Scratch
Blow
talk
Less More Less More
More Less More Less
More Less More Less
More Less More Less

7.  Purpose of this activity:
Dive into the depth of the scientific side on how the amplifier and polymer
work.
 Conclusion:
Flow of Electricity:
Positive and Potential Flow Current Electricity
negative charge difference of electron
Activity 4:
The Inside Story

8.  Purpose of this activity:
We learned how to read voltages using logger pro and some equipment
the teacher gave us (Polymer, Wires).
Activity 5: Measuring Piezoelectric or
Piezoelectric Response

9. Design project :
Design a Coin Counter
The purpose of this activity:
To know how to design a coin counter is created and have knowledge about
the voltage and mass of each coin.
Results:
0
1
2
3
4
5
6
coin 1 coin 2 coin 3 unknown
mass (g)
voltage

10.  Introduction and Rationale:
To prevent teeth damage .
This is important to everyone especially children who don’t clean their
teeth regularly and eat a lot of sweets.
This is a new idea that possibly hasn't been thought of as of now.
It’s a promising idea because it helps both the general public and lessens
work on dentists.
 Aim of the work
Locate a chemical that results into an exothermic reaction to allow our
thermal sensor to detect the heat and outputs an alarm.
Cavity Detector

11.  It will not harm people when they use it.
 It will be efficient, battery saving sensor that has a high
percentage of energy efficiency.
Cavity Detector
Hypothesis

12.  Toothbrush
 Bulb (red and green)
 Pump
 Cavity sensor
Cavity Detector
Materials

13. When you feel extra sensitivity on your teeth
you use this specified toothbrush, that when
turned on pumps out (chemical name) that
reacts with the cavity bacteria and generates
an exothermic reaction which will be detected
by the sensor implanted into the toothbrush
which will later on output a beeping alarm if
this alarms sounds it’s a sign of rotting teeth.
Cavity Detector
Methods

14.  To lessen work on the dentist and speeds up teeth recovery.
 Detect cavities without struggle.
Cavity Detector
Results

15.  If its possible find the chemical that reacts to the
cavity
 Add a yellow light as a indicator that cavity is on the
safe side.
Cavity Detector
Recommendations

16. In conclusion this sensor is only used to detect cavities
and not get rid of them. So you will still be expected
to visit an orthodontist on a regular basis for a check
up.
Conclusions

17. Many thanks to AL-Bairaq team from Center for
Advanced Materials (CAM), Qatar University for
supporting us during our journey with a AL-Bairaq.
Also, I would like to thank the sponsors UNESCO, Qatar
National Commission, Ras Gas, Maersk and Shell.
Acknowledgment