Done by Group : Diamond School Name : Umm Hakeem Independent Secondary School for Girls. Smart Sensors Module : Gives knowledge about smart sensors and the PVDF films through activities, experiments and projects which depend on smart sensors. the product Idea is : The smart blind glasses have an infrared sensor , it will be used by blind people which will allow them to walk freely like any other normal person, or let’s say that they are going to walk like they actually can see.

1. AL-Bairaq
I am Discovering Materials
Smart Sensor
Group: Diamond
-Maryam Mohammed -Mariam Jafar
-Hajer Salah

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
• Activity 5: Measuring Piezoelectric or Pyroelectric
Response
• Design Project: Design a Coin Counter
• Product Idea: Smart Blind Glasses

3. Introduction
Smart sensors are smart devices that is being used in many
sections, it converts physical amounts to electric amounts
such as heat, pressure and light...and the output would be
current or resistance.

4. Activity 1: Evading Motion Detection
trying to evade a motion detector sensor
Procedure:
• We tried evading the motion sensor by:
• Predicting it’s range
• Put different batteries
• we used cardboard and plastic even cloth
• we also tried to walk really slow

5. Conclusion: It may seem impossible but everything worked fine and
the sensor didn’t make any sound except for the fabric.
Activity 1: Evading Motion Detection
Results:
• Range reach up to 18 feet
• Range area in conical shape

6. Activity 2: Taking a Tour of Some Sensors
Procedure:
• three devices were placed in front of us
• we were asked to compare between them

7. OutputProcessorInputDevice
NumbersElectric circuitTemperatureThermometer
Sound and
movement
Electric circuitBatteriesClock
ColorsHeat transferHot waterCup
Conclusion: A sensor is a physical system that responds by creating
a useful response
Results:

8. Activity 3: Making a Microphone
Procedure:
• This activity required making a table as well but with two
different kinds of PVDF
• one of the PVDF was rigid and the other was flexible

9. PVDF Rigid Flexible Rigid flexible
Flick More Less More Less
Scratch Less More Less More
Blow Less More Less More
Talk Less More Less More
conclusion: After testing them out, we found out that the
flexible PVDF is more sensitive
Results:

10. Activity 4: exploring the piezo effect
Procedure: Recognize the structure of a polymer
Piezoelectric effect: is the ability of certain materials to generate an
electric charge in response to applied mechanical stress.

11. Activity 5: Measuring Piezoelectric or Pyroelectric Response
Procedure: Drop an iron ball on the PVDF and get the voltage
Results:
conclusion: The bigger the ball the bigger the voltage

12. Design project: Design a Coin Counter
Procedure:
•At this activity we had two tasks to do
• Drop three coins on the PVDF then make a table for the mass and the
voltage
•After that we dropped the coins in the same height for three times on
the PVDF

13. Mass V1 V2 V3 Average voltage
m1 (8.4g) 0.23 V 0.17 V 0.08 V 0.48/3= 0.16 V
m2 (5.4g) 0.31V 0.22 V 0.37 V 4.72/3= 1.57 V
m3 (1.6g) 0.10 V 0.46 V 0.03 V 0.59/3= 0.196 V
Voltage Unknown mass
0.58 V 7.1g
conclusion: turned out, the bigger the mass of the coin is the bigger
the voltage gets

14. •Introduction and rationale:
•There is a group of people that the world
doesn’t seem to care about but we do and
we want them to feel normal as much as we
can , there is blind people in every country
but we want to start in our country Qatar
for a first step
Final Project:
Smart blind glasses
•The idea will make a big difference, not only for blind but the
people that’s around them as well, our idea is not 100% new but I
sure you it’s promising
•The background of our product is physics and we learned some
physics in the activities which is more fun than school’s technique

15. •We want blind people to see, not literally but make life a little bit
easier for them and that’s going to be our goal
•Our main purpose of this product is to put some hope in blind
people and make the society accept them more
Smart blind glasses
Objectives and Aim of the Project:

16. Smart blind glasses
Hypothesis:
Is there a need for smart glasses for the blind?
Will our glasses sense accurately infrared objects in front of it?
Is the alarm fast enough to alert the blind person wearing the
glasses?
Will the alarm be noisy or to other people around?

17. Smart blind glasses
Materials:
The materials are simple and cheap also not really hard to find:
• Sun glasses
• Infrared sensor (An infrared sensor is an electronic instrument
which is used to sense certain characteristics of its surroundings
by either emitting and/or detecting infrared radiation)
• Headphone

18. Smart blind glasses
Methods:
The headphone is attached to the sensor which will allow the
person who is using it to walk without worrying about disturbing
people around him, the sensor will sense certain objects that get’s
in his way and that would turn on an alarm to make the person
know that he have to move away or in a different direction.

19. Smart blind glasses
Results:
The smart blind glasses will be used by blind people which will
allow them to walk freely like any other normal person, or let’s
say that they are going to walk like they actually can see.
The Qatari society will improve more if every citizen or resident
worked for Qatar interest

20. Smart blind glasses
Recommendations:
• We recommend to put more effort into our project and make it
even more developed and easy to use
• We also do advice of more investigation for improvement of our
product
• If we ever faced obstacles in our experiments or testing of our
product like not being able to buy or have the sensor we need
we’re not going to give up on the product and we will find a
solution or an alternative because we know that someone
somewhere needs that product or maybe wish for it to happen

21. Conclusions
We gained a lot of information's about sensors and we realized that we
are surrounded by them, they are basically the five senses of the human
being but as a machine or device to reveal what is going on in the world
while humans are busy doing something more important.

22. Acknowledgment
A big thank you for all the teachers that helped us, our school
umm hakeem for encouraging us 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.