WELCOME

VOICE USAGE MOBILE

CHARGINGGuided by,

Mrs.ANILA MOL

Asst.professorECELMCST

PRESENTED BY,ALEX M CHACKOS7 ECEROLL NO: 11LMCST

INTRODUCTION

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Sound energy Electrical energy

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It is one of the new developed technology.

Researchers from Texas , &university of Houston working on just such a concept back in 2013.

They focused on a certain type of piezoelectric material at around 21 nanometer thick.

South Korean researchers developed the effective method.

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You have probably heard of renewably energy source like solar , wind,…

Have you ever thought about sound energy? Sound that always exists in our everyday life

and environments has been overlooked as a source.

This motivated us to realize power generation by turning sound energy from speech , music into electrical power.

Sound pollution is a great disadvantage that we come across our daily life.

But using this technology we can convert this great disadvantage to our use

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WORKING PRINCIPLE

It works on the principle of piezo electric phenomenon.

The generation of an electric charge in certain non conducting material when they are subjected to mechanical stress is called piezoelectric effects (conversion of ME to EE)

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What is piezo ?

Piezo is used to describe the materials that accumulate a charge as a result of piezoelectric effect.

Piezo material , including crystals and ceramics generate a voltage in response to an applied mechanical force.

In reverse piezoelectric effect, these same material will lengthen or shorten in response to an applied voltage.

The voltage at force generated by piezo material are small and usually required amplification.

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WORKING OF PIEZO

stress

voltmeter

COMPONENTS

Sound absorbing pads

Zn electrodes

Nano- generator

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Environment-friendly

Shock resistant

Moisture proof

Heat insulation, acid-base resistant

9ABSORBING PLATES

These electrodes contains

nano generator between them these electrodes vibrate when sound waves hit on it .

10ZINC

ELECTRODES

11NANO GENERATOR

o Converts mechanical energy into electrical energy.

CONSTRUCTION Tiny strands of zinc oxide sandwiched

between two electrodes.

A sound absorbing pad is placed on the top of zinc oxide.

Nano generator is placed between the sandwiched zinc oxide and electrode.

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WORKING Sound waves are given as input and we get

electrical energy as output. When the sound waves are hit on the

sound absorbing pad, it will vibrate. This result in the tiny zinc oxide wires to

compress and release. This given to the Nano generator. It convert the given ME To EE. The generated electrical energy is used to

charge the battery.

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Sound wave of 100 decibels produced an electric current of about 50 millivolts

Normal conversation is conducted at about 60-70 decibels.

5-12 volts needed to properly charged the typical mobile device.

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16ADVANTAGES

Mobile phones can be charged while calling.

External power supply is not required

We can use any of the following sound sources to charge..• Background noise and music• Industrial noise• Noise created by traffic, trains..

Conventional energy sources can be preserved

DISADVANTAGES

It is expensive.

Construction is difficult.

Only possible for low voltage application.

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SCOPE FOR FUTURE

Sound insulating walls near highways and airports to produce electricity for lightning and other use.

Recharge electric cars by tapping into the energy in traffic noise.

Both reducing noise levels and capturing wasted energy.

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CONCLUSION Sound pollution is a great disadvantage

that we come across our daily life. By using this great disadvantage to our

use. Voice usage to charge mobile phones

creates a new era with cleanly environment along with saving energy.

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REFERENCE www.Seminarpaper.com www.Authorstream.com www.Gizmag.com www.Pptsforece.blogspot.com www.Wikipedia.com

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24QUERIES???