AL-BairaqI am Discovering Materials

Smart Sensors

Creative Ibrahim SalehKhalifa Salham

Outline• Introduction• Activity 1: Evading Motion Detection• Activity 2: Taking a tour of some sensors• Activity 3: Making Microphone• Activity 4: Exploring the Piezo

Effect :Inside story• Activity 5: Measuring Piezoelectric or

Pyroelectric Response• Product Idea: Save the Water

Smart sensorIt is a device that detects or measures a physical property.

Sensors are custom programmed to produce alerts when critical limits are reached and responds to that.

Introduction

Objective : To see if sensor can detect motion of human and

objects

Conclusions: The detector infrared

Activity 1: Evading Motion Detection

Results

Object Motion detectionNormal / High Human Speed Detected

Slow Human Speed UndetectedFixed Object Undetected

Moving Object Undetected

Objective : Getting to know some sensors, for example the

music card

Conclusion : Smart sensors are all around us.

Activity 2: Taking a tour of some sensors

Result

Input Processer Output

Open the card Electric Circuit Sound

The team recording results

Objective : To find the difference in sound intensity when using

flexible or rigid materials

Conclusion : Flexible more sensitive than rigid.

Activity 3: Making Microphone

Results

Flexible Rigid With out With With out With

Flick Less Less More MoreScratch More More Less Less

Blow More More Less LessTalk More More Less less

Objective : Using atoms and bonds to form monomers and

then polymers

Results:As shown in the figure below : F H F H | | | | C ــــ C ــــ C ــــ C | | | | F H F H Conclusion : Monomers can be formed by linking atoms with

bonds, then polymers can be formed by linking the resulted monomers .

Activity 4: Exploring the Piezo Effect :Inside story

Objective :To measure output voltages by connecting labpro

device to PVDF

Conclusion : The larger the ball, the higher the voltage

Activity 5: Measuring Piezoelectric or Pyroelectric Response

Results

Large Medium small

0.7 V 0.4 V 0.2 V

Photo of the used device

The problem is:

How do we make water consumers reduce water consumption ?

Design Project

OUR SOLUTION IS …

Using smart sensors

Save the waterIntroduction

We are going to make an alarm sensor which works to alert the consumer when he uses a lot of water by messaging him using apps in smart phones.

This sensor will be placed in the consumers’ house near the water storage.

Will the project save the water? Can sensors detect the water level? Is the SMS enough to take action regarding

the over used water?

Save the WaterHypothesis

We have three sensors :-◦Sensor A at 50% from the bottom of the

tank ◦Sensor B at 75% from the bottom of the

tank ◦Sensor C at 100% from the bottom of the

tank The connecter device that connect

between sensor and consumer

Save the waterMaterials

Save the Water Working Methodology

The sensor will send three warning messages to the consumers:

First warning message will be green colored if he uses 50% of the free water. Second warning message will be yellow colored if he use 75% of the free water. Third warning massage will be red colored if he use 100% of the free water.

You used 50% of the free water

You used 75% of the free water

You used all the free water and any water you will use it now it will be

charged in you

Save the Water Working Methodology cont’d

Recommendation We will arrange this sensor with Kahramaa

or companies which can convince the consumers to put the sensors.

Tarsheed Campaign

Any questions

Write your overall conclusions and the general benefits that you gained through your

participation in AL-Bairaq project.

Conclusions (Overall of the whole module)

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