3. Founder of Piezoelectric Effect
• Pierre Curie & Jacques Curie – two curie brother discovered the
PIEZOELECTRIC EFFECT in 1880.
4. Piezoelectric Effect
The generation of an
electric charge in certain non-
conducting materials , such as
quartz crystals & ceramics ,
when they are subjected to
mechanical stress such as
pressure or vibration is known
as PIEZOELECTRIC EFFECT.
6. Piezoelectricity is the electric charge that accumulates in certain solid
materials such as crystals, certain ceramics, and biological matter such as
bone, DNA and various proteins in response to applied mechanical stress. The
word piezoelectricity means electricity resulting from pressure. It is derived
from the Greek piezo or piezein , which means to squeeze or press,
and electric or electron , which means amber, an ancient source of electric
charge.
The piezoelectric effect is understood as the linear electromechanical
interaction between the mechanical and the electrical state in crystalline
materials with no inversion symmetry. The piezoelectric effect is a reversible
process in that materials exhibiting the direct piezoelectric effect also exhibit
the reverse piezoelectric effect. For example, lead zirconate titanate crystals
will generate measurable piezoelectricity when their static structure is
deformed by about 0.1% of the original dimension. Conversely, those same
crystals will change about 0.1% of their static dimension when an external
electric field is applied to the material. The inverse piezoelectric effect is used
in production of ultrasonic sound waves.
7. Application of Piezoelectric Effect
• High Voltages & Power Sources
• Sensors
• Foot Step Energy Generators
• Actuators
• Frequency Standard
• Piezoelectric Motors
• Reduction of Vibration & Noise
• Infertility Treatment
• Surgery
• Potential Application
8.
9. Foot Step Energy Generation
• Today World is going through shortage of sources of energy so we have to think
about this worldwide problem. Piezoelectric effect helps us in producing our
mechanical energy or mechanical pressure into electricity.
• Foot step energy is one of application of piezoelectric effect which can be used
in two different ways:
I. Installing piezoelectric sensors in Pathways - Footstep energy Harvesting
II. Installing Piezoelectric sensors in Shoes - Footstep energy Generation
10. Foot-Step Energy Harvesting
Generating electrical power as non-conventional method by simple
walking or running on the foot-step.
Non-conventional energy using foot-
step is converting mechanical energy
into electrical energy.
12. Working
When ever force is applied on piezo electric crystals that force is
converted to Electrical energy is used to drive DC loads. And that
minute voltage Which is stored in the Lead Acid battery. The
battery is connected to the inverter.
This inverter is used to convert the 12 Volt D.C to the 230 Volt A.C.
This 230 Volt A.C voltage is used to activate the loads.
We are using conventional battery charging unit also for giving
supply to the circuitry.
13.
14.
15.
16. •An area of France named Saint Omer has
installed the technology which is called
FOOTSTEP ENERGY HARVESTING.
•The technology is invented by PAVEGEN
TECHNOLOGY.
17.
18. Advantages
Reliable, Economical, Eco-Friendly.
Less consumption of Non- renewable energies.
Extremely wide dynamic range, almost free of noise - suitable for shock
measurement as well as for almost
imperceptible vibration
Excellent linearity over their dynamic range
Compact yet highly sensitive
No moving parts - long service life
Self-generating - no external power required
Great variety of models available for nearly any purpose
19. Main Era of Foot-Step Harvesting
The project “FOOT STEP POWER GENERATION FOR
RURAL ENERGY APPLICATION TO RUN A.C. AND D.C. LOADS” is
successfully tested and implemented which is the best economical,
affordable energy solution to common people. This can be used for many
applications in rural areas where power availability is less or totally
absence. As India is a developing country where energy management is a
big challenge for huge population. By using this project we can drive both
a.c. as well as D.C loads according to the force we applied on the piezo
electric sensor.
