The document summarizes activities completed by students as part of an Al-Bairaq program exploring smart sensors. The students: 1) Learned about smart sensors through activities exploring motion detection, different sensors in toys, and making a microphone using a piezoelectric sensor. 2) Studied piezoelectric polymers by building PVDF monomers and polymers and measuring their response to bending and pressure. 3) Designed a coin counter project using a piezoelectric sensor to measure voltage changes from dropping different mass coins and plotted the results on a graph. 4) Proposed a patient pressure point sensor project using a moisture sensor to alert nurses when a patient needs a diaper change for

1. LAB HEROES
AISHA AL-MUHANNADI LUJAIN AL-EMADI
NOOF AL-QAHTANI SHAIKHA AL-MURIAKHI
AL-Bairaq
I am Discovering Materials
PP sensor

2. Outline
• Introduction
• Activity 1: Evading Motion Detection
• Activity 2: Taking a tour of some sensors
• Activity 3: Making a microphone
• Activity 4: Exploring the piezo effect: the inside
story (A,B,C)
• Activity 5: Measuring piezoelectric or Pyro
electric response.(A,B)
• Design Project Using graphs
• Product Idea pp sensor

3. Introduction
 A smart sensor is a device that takes specific inputs from
the physical environment.
Smart sensors are used in different electronic devices to
perform different tasks, one smart sensor can be used in
many different ways.
An example of a smart
sensor is the PVDF.

4. Activity 1: Evading Motion Detection
 Introduced to a motion detector containing a
piezoelectric sensor.
 Found out that the stimulus is the change in
infrared radiation.

5. Activity 2: Taking a tour of some sensors
 Each toy has its own stimuli

6. Activity 3: Making a microphone
 Making a
microphone.
 Exploring
the loudness.
 Checking
how clear the
sounds
produced.
 Learn the
difference
between a
rigid film
and a flexible
film.
Tests Flexible
film
Rigid film
Flick
Free film Clear, loud Not clear
Attached to
substrate
Clear, louder Low and not
clear
Scratch
Free film Clear, loud clear
Attached to
substrate
Clear, louder Not clear and
not lout
Blow
Free film Clear, loud clear
Attached to
substrate
Clear, louder static
Talk
Free film Loud, not
clear
Not loud,
clear
Attached to
substrate
Louder but
with lots of
static.
Loud with
echo

7. Activity 4 (part A and B)
PART A
 We built a PVDF
monomer.
 The formula is : C2F2H2
PART B
 We built a PVDF polymer.

8. Activity 4 (part C)
•If you bend fast the voltage will
be higher.
•The faster the bending the higher
the voltage because pressure
increases.

9. Activity 5 (part A)
size average
Small -0.043
Medium -0.0563
Large -0.149
Size (large) average
Substrate 0.42
Without substrate -0.42
We dropped:
• A fixed mass from different
heights
• Different masses from a fixed
height

10. Activity 5 (part B)

11. Design project:(designing a coin counter)
v1 v2 v3 average
Coin 1
Mass=8g
-0.427 -0.335 -0.315 -0.359
Coin 2
Mass=5g
-0.139 -0.115 -0.164 -0.139
Coin 3
Mass=2g
-0.056 -0.071 -0.056 -0.061
-0.4
-0.35
-0.3
-0.25
-0.2
-0.15
-0.1
-0.05
0
8g 5g 2g
Average
We measured the voltage of
the unknown mass , then we
found the mass ,which is 3,
from the graph.
The height the mass was dropped from : 10cm

13. PP sensor
 Introduction and Rationale:
We chose this product because patient’s health and comfort
is our first priority. Some patients are unable to show the
signs of discomfort so this device will help nurses to detect
that.
 Aim of the work :
Our aim is to
 make patients more comfortable and free of any possible skin
diseases
 make nurses’ jobs easier.
 Be able to monitor your patient from afar.

14. Hypothesis
 Patients will less likely suffer the skin diseases/rashes they
are prone to.
 Nurses will easily navigate their way to the discomforted
patient ; they will then deal with them accordingly.

15. Methods and Materials
 A clip with moisture sensor and a micro processor unit programmed with the
bed number .
 When the sensor detects any wetness it will send a notification message to the
nurse’s monitor .
 The nurse will change the diaper and sanitizes the clip to use it again
The materials are :
Moisture/ wetness
sensordiaperclip

16. Results
 If hospitals and medical corporations executed this idea, their patients will be
in their utmost luxury, and nurses would have more access to their patients'’
needs.

17. Recommendations
 We recommend the ministry of public health to have
a look through this research and apply it in hospitals
and medical corporations in Qatar.

18. Conclusions
During our al bairaq experience we learned about
smart sensors, specifically the PVDF. We did many
activities that helped us understand how sensors
work, based on that we came up with our project
idea.

19. 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 and Shell.