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ELECTRICAL POWER GENERATION USING FOOTSTEP

30/08/2014 1ELECTRICAL POWER GENERATION USING FOOTSTEP

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.

30/08/2014ELECTRICAL POWER GENERATION USING

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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.

30/08/2014

ELECTRICAL POWER GENERATION USING FOOTSTEP 12

http://www.pavegen.com/

A VIRTUAL DEMO OF PAVEGEN


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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


FOOTSTEP 1930/08/2014ELECTRICAL POWER GENERATION USING

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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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http://www.ieee.org/

http://www.wikipedia.com/

http://www.livescience.com/4572-crowd-farm-converts-footsteps-electricity.html

http://www.livescience.com/4572-crowd-farm-converts-footsteps-electricity.html

http://www.barc.gov.in/

Thank you…


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