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Abstact: converting Mechanical Energy intoelectrical energy by using body weight andpower wearable sensors.This paper studies aPiezoelectric electric sensor which helps inconversion of energy.The design of thepiezoelectric material is as such that it canbe fitted inside the sole of the shoes withoutcompromising with the comfort of theuser.It is durable as it is fitted inside theshoe .Furthermore with help of dc circuitpower transmission takes place.
The fast few decades emphasized oninventingnew devices such as mobilephones,Laptops,MP3 players etc.Theseobjects nowdays are not luxuries but theyhave become of our need.This Devicescannot be connected to a constant Ac sourcebecause of their portable nature .The batterycapacity have been increased to reliableextent but still the devices suffer fromlimited storage due to their additional useand multiple operations performed onthem.One way is to carry additional batteriesand other is to convert easily availableenergy into electric energy.
The human body has also been consideredas an excellent platform for applying suchtechnologies, since the body contains a lot ofambient energy .There have been manyattempts to supply power to mobile devicesin real-time using the energy generated bythe human body .They include shoe-mounted generators, knee-mountedgenerators , energy harvesting on abackpack and harvesting energy frombreathing .They accomplished hugeimprovement in economic and effective useof human motion by designing sophisticatedstructures mounted on unique locations onthe human body or wearables. Some of themeven suggested that waste energy in humanmotion can be utilized to generateelectricity. However, since theirimplementation requires delicatemanufacturing depending on the mountingconfiguration, there are still many problemsto be tackled for practical development andfurther commercialization. Also, the level ofoutput power and operating schemes are notyet suitable for an instantaneous self-powering generator.The human-poweredself-generator still provides the best solutionfor individuals who are in need of animmediate and reliable power supply since itis less dependent on weather conditions andoccupies smaller volumes than any other
International Journal of Scientific & Engineering Research Volume 9, Issue 5, May-2018 ISSN 2229-5518
renewable energy source. With muchimproved designs of practical mechanicalpower transmission and electromagneticconfigurations as well as simple operatingschemes and structures, it should be possibleto realize a practical portable human-powered generator.
Use of batteries as a Power source isa common in day-to-day life for powergeneration.But,the use of batteries helps intransmitting only limited energy.Hence it isimportant to find a independent source ofpower generation.This helps in generatingclean and sustainable energy.Severalconcepts of piezoelectric material for powergeneration are studied, such as such aselectromagnetic, electrostatic ,thermoelectric , nano-triboelectric andpiezoelectric.Piezoelectric energy harvestersand nano-triboelectric generators canconvert mechanical energy into electricenergy.These Piezoelectric material can beeasily found as well as their design is morecompact and simple.
2. Literature Survey of Piezoelectricmaterial
The survey considered in this work are
categorized in the following subsections
separately as generating electric power using
human efforts by integrating piezoelectric
sensors in shoes.
2.1.1 Literature Survey onelectricity generation
by pizoelectric material:
The following literature review is based on the
electricity generation by piezoelectric material
on various materials such as Titanium alloys;
Ceramics etc.J Jhon Livingstone [1] presented
an experimental study of piezoelectric
materialbelow the shoes, which convertes
human efforts/kinetic energy into electric
energy. Electric energy is ussed to charged
mobiles and wearable electronics, but
positioning of piezoelectric sensor below the
causes damage of the sensor and produces less
voltage.Jingjing Zhao-Zheng you [2] they
manufacture energy harvester design which is
sandwich structure, where multilayer PVDF
flim is sandwiches between two wavy
structures of movable upper plate ans lower
plate. When upper plate is subjected to a
compressive force produce by foot, the upper
plate moves down and PVDF stretch aixs
simultaneously. This leads to piezoelectric field
inside PVDF layer. And one with without
PVDF layer prototype is created. In which
without PVDF layer prototype produce large
electric energy where other with PVDF layer
produces less energy.
Henry A. sodano-Daniel inman [3] in this the
piezoelectric material is excited by mechanical
vibration.Which generated embbeded in
vibrating environment for their evolution and
electromagnetic transducer was chosen.
Harmonic analysis of the generator was
International Journal of Scientific & Engineering Research Volume 9, Issue 5, May-2018 ISSN 2229-5518
[1]J.john livingstone and Mhemalatha,”Charging an electronic gadjetusing piezoelectricity,”Indian journal ofscience and technolog, vol7 (7), 945-948,2014.
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[16]A. Gupta, A. Sharma,” PiezoelectricEnergy Harvesting via Shoe Sole,”International Journal of New Technologyand Research (IJNTR) ISSN: 2454-4116,Pages 10-13, 2015.
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International Journal of Scientific & Engineering Research Volume 9, Issue 5, May-2018 ISSN 2229-5518