Sound to electricity

2. Guided by,
Mrs.ANILA MOL
Asst.professor
ECE
LMCST
PRESENTED BY,
ALEX M CHACKO
S7 ECE
ROLL NO: 11
LMCST

3. INTRODUCTION
.
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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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8. 6
WORKING OF PIEZO
stress
voltmeter

9. COMPONENTS
Sound absorbing pads
Zn electrodes
Nano- generator
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10. 8

11. Environment-friendly
Shock resistant
Moisture proof
Heat insulation, acid-base
resistant
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ABSORBING PLATES

12. These electrodes contains nano
generator between them these electrodes
vibrate when sound waves hit on it .
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ZINC ELECTRODES

13. 11
NANO GENERATOR
o Converts mechanical energy into electrical energy.

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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22. REFERENCE
 www.Seminarpaper.com
 www.Authorstream.com
 www.Gizmag.com
 www.Pptsforece.blogspot.com
 www.Wikipedia.com
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QUERIES???