Transcript
WELCOME
VOICE USAGE MOBILE
CHARGINGGuided by,
Mrs.ANILA MOL
Asst.professorECELMCST
PRESENTED BY,
ALEX M CHACKO
S7 ECE
ROLL NO: 11
LMCST
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
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ABSORBING PLATES
These electrodes contains
nano generator between them these electrodes vibrate when sound waves hit on it .
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ZINC ELECTRODES
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NANO 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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ADVANTAGES
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???
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