1) The document discusses activities done by a team exploring different types of smart sensors and how they work. This includes evading motion detectors, exploring sensors in different toys, and making a microphone. 2) The team also explores the piezoelectric effect through building polyvinylidene fluoride (PVDF) films and testing their response to bending, heat, and impacts of different masses and heights. 3) The final project was developing a "Flood Vacuum" machine to solve flooding issues in Qatar using sensors like rain gauges and pressure sensors. The machine is meant to automatically collect floodwater in sloped areas and drain it.

1. AL-Bairaq
I am Discovering Materials
Smart Sensors
INTELLEGENCE TEAM
Mariam Yousef Sondus Jawad
Sara AlObaidli Maryam AlKuwari

2. ACTIVITIES
#1: Evading Motion Detection
#2: Surrounded by sensors
#3: Making a Microphone
#4: Exploring the piezo effect: The inside story
#5: Measuring the piezoelectric response
Design Project
Final Project: Flood Vacuum

3. Smart Sensors
• devices that responds to changes in the environment
• There are a lot of different kinds of smart sensors;
therefore smart sensors can be used in many different ways.
Type of
sensor
mechanical chemical thermal
magnetic-
electrical
Electro-
magnetic
Source of
physical
stimuli
•Force
•Pressure
•Mass
•sound
•pH
concentrati
on
•Gas
emission
•Temperatu
re
•Heat flow
•Resistance
•Voltage
•Magnetic
field
strength
•Wave
length
•Intensity
•Infrared
radiation

4. Activity #1
Evading Motion Detection
1. They work by sensing thermal
energy(infrared waves).
2. They don’t sense slow
moving objects or when there
is an insulator between the
object and the motion
detector.
3. The motion detectors range is
a cone shaped area.

5. Activity #2
Taking a tour of some
sensors
Toy Stimuli Response
Singing card Motion and pressure Produces sound
Talking Ben Pressure Produces sound
Chirping birds Sound and motion Produces sound and movement
Sunflower toy Sound Movement
Frog toy Motion Produces sound
*find the stimuli and response*

6. Activity #3
Making a microphone
Making and understanding
how microphones work
TESTS FLEXIBLE FILM RIGID FILM
flick
Free film quiet loud
Attached to substrate
scratch
Free film
clear sound rough sound
(static)
Attached to substrate
blow
Free film faint sound very loud
Attached to substrate
talk
Free film clear but faint

7. Activity #4
Exploring the piezo effect:
The inside story
PART B: Build a polymer of
PVDF film
PART C: Determine how a PVDF film
reacts to bending
ART A: Build a monomer of PVDF film
The formula is * C2F2H2 *

8. Activity #5
Measuring the piezoelectric response
Part A
when hit by a big mass there is more
voltage, when hit from a higher height
more voltage
Part B
PVDF film produces voltage when
exposed to heat
Size V1 V2 V3
V
Average
Small
-0.217 -0.154 -0.154 -0.175
Middle
-0.325 -0.330 -0.271 -0.309
Big -0.403 -0.481 -0.442 -0.442
All dropped from height 10cm

9. Design Project DESIGNING A COIN
COUNTER
Mass of coin (g) V1 V2 V3 V
Average
2 -0.056 -0.071 -0.056 -0.061
5 -0.139 -0.115 -0.164 -0.139
8 -0.427 -0.335 -0.315 -0.359

10. Introduction
Flood Vacuum
❖ machine that solves the flood
problem during winter in Qatar
❖ it is used in sloped roads that
lack sewers

11. Flood Vacuum
Hypothesis
❖ will it solve car accident problems?
❖ will it reduce traffic on roads?
❖ will it work effectively?
❖ will it help in collecting waterfall in
a short period of time?

12. Flood Vacuum
how it works
❖ starts working when the
precipitation sensor
detects rain
❖ when the machine
absorbs a certain limit of
water, a pressure
sensor sends a warning
to empty the machine
and transfer the water to
the nearest drain

13. Flood Vacuum
Methods and Materials
Rain Gauge
senses water hitting its
outside surface using
beams of infrared light
Pressure Sensor
sends message when
it
reaches a certain limit

14. Flood Vacuum
Recommendations:
❖ Our product can be used by the Ministry of Municipality
and Urban Planning
❖ it is manly used for floods but it can also be used for
sewage over flow problems

15. Conclusions
We had the best experience while participating in
AlBairaq!
We learned a lot about sensors and how they can
make our life much easier and that they can solve
major problems in the world

16. Acknowledgment
Many thanks to my teachers, school and 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.