IJSRD: Conference : NCIL 2015

Application of Piezoelectricity in DMRC

Author(s):

Harsh Bhatt , Maharaja Agrasen College (University of Delhi); Rishabh Chandak, Maharaja Agrasen College (University of Delhi); Shivam Jain, Maharaja Agrasen College (University of Delhi); Rishabh Singhal, Maharaja Agrasen College (University of Delhi); Abhishek Jain, Maharaja Agrasen College (University of Delhi)

Keywords:

Piezoelectric Generator, ZirconateTitanate (PZT)

Abstract:

What have we done to our environment? Everyone should ask this question to themselves. Due to increasing demand of energy, the world is leading towards the depletion of carbon fuel. Today the need of the hour is the correct transformation of energy and reuse of energy. Fossil fuel based power generating technologies have much large amount of carbon emission leading to climate change. Today the need of century is to move towards carbon free energy and find every possible way to do so. One of the possible implementation is what we have done in our research. We at Maharaja Agrasen College, University Of Delhi, have tried to use Piezoelectricity, which is a 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, pressure and vibrations. We came up with an idea to convert pressure and mechanical stress into electricity in Metro stations. The energy people apply in walking on metro station platforms is converted into electric charge which is converted into electric voltage required to charge the battery using the piezoelectric transducer generators.

I. INTRODUCTION

Daily, about 2.70 million people travel in Delhi metro. These 2.70 million riders, you see as humans, we see them as power sources and are huge power assets. We aim to quantify the mechanical energy that is generated by humans daily but gets wasted. We will install piezoelectric transducer generators on the floor of metro stations which produce electric charge whenwe apply pressure on them. This electric charge can be used to generate an electric voltage which can be used to charge batteries. Now, let’s see how piezoelectric transducer generators actually work does.

Piezoelectricity (also called the piezoelectric effect) is the appearance of an electrical potential (a voltage, in other words) across the sides of a crystal when you subject it to mechanical stress (by squeezing it). In practice, the crystal becomes a kind of tiny battery with a positive charge on one face and a negative charge on the opposite face; current flows if we Piezoelectric effect is the generation of electric charge when mechanical strain is applied on piezoelectric materials.

A. Piezoelectric Generator:

Piezoelectric effect is employed in manufacturing sensors. The piezoelectric materials are both natural and artificially made. 

Quartz is a natural piezoelectric material while Lead ZirconateTitanate (PZT) is an artificial piezoelectric material.

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