PPT.pptx
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ELECTRICAL POWER GENERATION USING FOOTSTEP
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PRESENTED BY, ASHA A S-7,EEE REG:-11021339
GUIDED BY, RAKHI GOPINATH ASSISTANT PROFESSOR EEE DEPARTMENT
OBJECTIVES
To demonstrate a technology that harness energy from human footstep.
To analyze different methods that can be used to convert footstep energy to electricity.
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CONTENT
Introduction Methods of footstep electricity
generation Block diagram Applications Conclusion Bibliography
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INTRODUCTION
The world is running on electricity The need of power is increasing day by day. Non-conventional energy is very essential
at this time to our nation. Walking is the most common activity in day
to day life. This energy can be tapped and converted in
the usable form such as in electrical form.
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METHODS OF GENERATION
Footstep Electric Converter Device (FSEC)
Using PAVEGEN Footwear embedded
harvesters Using piezoelectric method Using gear arrangement
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FOOTSTEP ELECTRIC CONVERTER DEVICE (FSEC)
This device, if embedded in the footpath, can convert foot impact energy into electrical form.
The downward movement of the plate results in rotation of the shaft of an electrical alternator, fitted in the device, to produce electrical energy
The generated energy can be stored in a lead acid battery.
The electricity generated from these
devices can be used for street lights.
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Fig. 1FSEC
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Fig. 2: Operation of Foot Step Electric Converter(b) Before applying weight (No light)
(a) After applying weight (Bulb lights up)
Energy storage
The power generated by the foot step generator can be stored in an energy storing device.
The output of the generator was fed to a 12 V lead acid battery, through an ac-dc converter bridge.
Initially, the battery was completely discharged. Then, the FSEC was operated by applying foot load and energy was stored in the battery.
Commonly used is lead acid battery.
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Fig. 4: Storing Device for Foot Step Electric Energy
(a) Bulb on (after charging battery)
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(b) Bulb off (before charging battery)
Fig. 6.: Multi Unit FSEC Platform
The platform in Fig.6 is provided castor
wheels, and can be placed at any public place
where there is continuous movement of
people.
This unit is designed for persons weighing
50 Kg and above.
The unit is fitted with two 12 V, 26 Amp
lead acid batteries for storing the output
energy from this unit.
Also, an inverter is provided to convert 12 V
DC from battery to 230 V AC supply for
general use.
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Experiment
When a person walks over to the platform, the reading on
the energy meter was observed to be incremented by 3-5
J per step, depending on the weight of the person.
As millions of people are on the move in cities, significant
amount of electricity can be generated by installing these
devices at places where the public walk through.
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Observations inferred from the above experiment
FOOTSTEP ELECTRICITY GENERATION USING
PAVEGEN Paving slabs that convert energy from people's footsteps into electricity
The recycled rubber "Pavement" paving slabs harvest kinetic energy from the
impact of people stepping on them and instantly deliver tiny bursts of
electricity to nearby appliances. The slabs can also store energy for up to three
days in an on battery, according to its creator.
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FOOTWEAR EMBEDDED HARVESTERS.
This works as follows: droplets of liquid are placed between electrodes coated in dielectric film.
Both droplets and electrodes are connected to an external electrical circuit.
A tube of a millimeter wide and four millimeters long would contain the electrodes and droplets. In total the device would take up 40cm2 which can be incorporated in the sole of the shoe.
Each foot would generate up to 10W, which is enough to charge a phone or a laptop.
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Power generating shoe
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USING PIEZOELECTRIC
METHODPiezoelectric Effect
Block diagram of footstep electricity generation using piezoelectric method
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Advantages Reliable, Economical, Eco-friendly Compact Highly sensitive No moving parts – long service life
Disadvantages Output is very small Number of crystals should be high
to get sufficient output. The crystals have to be replaced
after 5 years
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USING GEAR ARRANGEMENT
Rack and pinion arrangement
Chain sprocket
Flywheel
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Schematic representation of footstep electricity generation using gear arrangement
APPLICATIONS
Key applications include :-
powering street lighting,
Displays
Speakers and alarms.
Charging batteries
Signage and advertisements.
In railway station
In bus station.
In Airports
Electric escalators
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CONCLUSION
This paper presents an adaptive approach to harvesting electrical energy
from footsteps.
Different methodologies for generation of electricity by walking is
reviewed and analyzed.
Very much relevant and important for highly populated countries like
India and China.
. video.mp4
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BIBLIOGRAPHY
www.ieee.org
www.wikipedia.com
http://www.livescience.com/4572-crowd-farm-conver
ts-footsteps-electricity.html
www.barc.gov.in
web.mit.edu/newsoffice/2007/crowdfarm
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