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Page 1: Smart Sensors, PP Sensor

LAB HEROESAISHA AL-MUHANNADI LUJAIN AL-

EMADINOOF AL-QAHTANI SHAIKHA AL-MURIAKHI

AL-BairaqI am Discovering Materials

PP sensor

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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

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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.

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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.

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Activity 2: Taking a tour of some sensors

Each toy has its own stimuli

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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

FlickFree 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

BlowFree 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

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Activity 4 (part A and B)PART AWe built a PVDF

monomer.The formula is :

C2F2H2

PART B

We built a PVDF polymer.

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Activity 4 (part C)

•If you bend fast the voltage will be higher.

•The faster the bending the higher the voltage because pressure increases.

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Activity 5 (part A)

size average

Small -0.043Medium -0.0563Large -0.149

Size (large) averageSubstrate 0.42

Without substrate

-0.42

We dropped:• A fixed mass from different

heights• Different masses from a

fixed height

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Activity 5 (part B)

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Design project:(designing a coin counter)

v1 v2 v3 average

Coin 1 Mass=8g

-0.427 -0.335 -0.315 -0.359

Coin 2Mass=5g

-0.139 -0.115 -0.164 -0.139

Coin 3Mass=2g

-0.056 -0.071 -0.056 -0.061

8g 5g 2g

-0.4-0.35-0.3

-0.25-0.2

-0.15-0.1

-0.050

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

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PP sensorIntroduction 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 diseasesmake nurses’ jobs easier.Be able to monitor your patient from afar.

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HypothesisPatients 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.

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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

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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.

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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.

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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.

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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.


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