4. 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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5. 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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6. 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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7. 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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14. 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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16. 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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17. 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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18. 16
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
19. DISADVANTAGES
It is expensive.
Construction is difficult.
Only possible for low voltage application.
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20. 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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21. 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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