AL-BairaqI am Discovering Materials

Smart Sensors

GOALSGhaya Al-Sulaiti Lamya Al-DerbestiFarah Mamdouh Bashaer Al-Mana

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

Outline

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

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.

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.

Device Input OutputProcessorCard

Thermometer

Pressure

Temperature

Electrical Circuit

Electrical Circuit

Sound

Digital Numbers

Activity 3Making 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.

FlickScratchBlowtalk

Less More Less MoreMore Less More LessMore Less More LessMore Less More Less

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 Electricitynegative charge difference of electron

Activity 4:The Inside Story

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

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:

coin 1 coin 2 coin 3 unknown0

1

2

3

4

5

6

mass (g)voltage

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

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

Toothbrush Bulb (red and green) Pump Cavity sensor

Cavity DetectorMaterials

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 DetectorMethods

To lessen work on the dentist and speeds up teeth recovery.

Detect cavities without struggle.

Cavity DetectorResults

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 DetectorRecommendations

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

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