Date post: | 19-Feb-2017 |
Category: |
Engineering |
Upload: | qatar-university |
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AL-BairaqI am Discovering Materials
Smart Sensors
InventorsAisha Yousef Aya Abdullatif
AlDana Sultan Noora Al-Emadi
video
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• Design Project: Design a coin counter• Product Idea: Fishing Sensor
Introduction: Sensors
• Smart sensors are nearly every where from your mobile phone to smoke detectors.
• There are normal sensors and smart sensors, smart sensors tendto be faster and function better than normal sensors.
Activity 1: Evading Motion Detection
• Motion detectors basically detects motion • We understood that motion detectors detect
heat and motion (using infra-red)• The range was 12 feet and in a cone shape.
Activity 2: Taking a tour of some sensors
• We tested some sensors and discussed the input and output of those objects.
Device Input Process Output
Talking ben Touch Electric circuit Sound
Lighting shoe Pressure Electric circuit Light
Mobile phone touch screen
Heat from finger Electric circuit Sound
•Conclusion: sensors detect many things such as heat, pressure and touching.
Activity 3: Making Microphone
Flexible Rigid Flexible Rigid
Flick Less More Less More
Scratch More Less More Less
Blow More Less More Less
Talk More Less Less More
Without substance With substance
•We made a microphone using PVDF (polymer), one is rigid and the other is flexible.
Conclusion: flexible PVDF is more sensitive than the rigid one
Activity 4: Exploring the Piezo Effect :Inside story
We understood how the structure of the polymer is.We also understood that when we apply
pressure on the polymer it produces piezoelectric effect.
Design Project: Design a Coin Counter
•We measured the mass using a balance and voltage using data logger
Design Project: Design a Coin Counter•We understood that coin counter depends on mass of coin to have variety in voltage.•We found out that the mass to voltage has a sequence, so we used this sequence to find out the mass of the 4th coin.•The coin falls due to gravity.
COIN: 1 2 3 4
MASS (g): 4.5g 3.5g 2.5g ? = 4gVOLT (v) 1.8v 1.3v 1v 1.5v
Final ProjectFishing Sensor
• Introduction and Rationale: • Qatar is near the sea and has a huge source of fish
and fishing needs so much effort from people.• What was new in this product is using sensors.• Physics is what we are dealing with because sensors
and the energy is what is we need to make the product.
Fishing Sensor• Aim of the work (objectives)• Making fishing easier and have more fish at the
same time.
Fish SensorHypothesis
• Qatar is near the sea and it has a huge source of fish • This project would make fishing
easier• To catch fish so much effort is needed• Make it water proof.
Fish sensorMethods and Materials
Materials:
Motion detector
Method: The fish tank will have a motion detector to detect fish and make an alarm to inform fishers that the tank is full.Fish
Gargour
Fish sensorResults
• Reducing effort on catching fish • Getting more fish• Less fish will die when the tank is full because
the alarm will go on when the tank is full.
Fish sensorRecommendations
• We recommend doing more research and to make the idea better
• Make it cheap and easy to provide.
We were the winners of the week in the workshop
Acknowledgment
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.